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  • 1.
    Aaboud, M.
    et al.
    Faculté des Sciences, Université Mohamed Premier and LPTPM, Oujda, Morocco.
    Aad, G.
    CPPM, Aix-Marseille Université and CNRS/IN2P3, Marseille, France.
    Abbott, B.
    Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, United States of America.
    Abdallah, J.
    University of Iowa, Iowa City, United States of America.
    Augsten, K.
    Czech Technical University in Prague, Praha, Czech Republic.
    Caforio, D.
    Czech Technical University in Prague, Praha, Czech Republic.
    Gallus, P.
    Czech Technical University in Prague, Praha, Czech Republic.
    Guenther, J.
    Czech Technical University in Prague, Praha, Czech Republic.
    Hubaček, Z.
    Czech Technical University in Prague, Praha, Czech Republic.
    Myska, M.
    Czech Technical University in Prague, Praha, Czech Republic.
    Pospisil, S.
    Czech Technical University in Prague, Praha, Czech Republic.
    Seifert, F.
    Czech Technical University in Prague, Praha, Czech Republic.
    Simak, V.
    Czech Technical University in Prague, Praha, Czech Republic.
    Slavicek, Tomas
    Czech Technical University in Prague, Praha, Czech Republic.
    Smolek, K.
    Czech Technical University in Prague, Praha, Czech Republic.
    Solar, M.
    Czech Technical University in Prague, Praha, Czech Republic.
    Sopczak, A.
    Czech Technical University in Prague, Praha, Czech Republic.
    Sopko, V.
    Czech Technical University in Prague, Praha, Czech Republic.
    Suk, M.
    Czech Technical University in Prague, Praha, Czech Republic.
    Tureček, D.
    Czech Technical University in Prague, Praha, Czech Republic.
    Search for the Standard Model Higgs boson produced by vector-boson fusion and decaying to bottom quarks in root s=8TeV pp collisions with the ATLAS detector2016Ingår i: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, nr 112Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A search with the ATLAS detector is presented for the Standard Model Higgs boson produced by vector-boson fusion and decaying to a pair of bottom quarks, using 20.2 fb−1 of LHC proton-proton collision data at s=8" role="presentation" style="box-sizing: border-box; display: inline-table; line-height: normal; letter-spacing: normal; word-spacing: normal; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;">s√=8s=8 TeV. The signal is searched for as a resonance in the invariant mass distribution of a pair of jets containing b-hadrons in vector-boson-fusion candidate events. The yield is measured to be −0.8 ± 2.3 times the Standard Model cross-section for a Higgs boson mass of 125 GeV. The upper limit on the cross-section times the branching ratio is found to be 4.4 times the Standard Model cross-section at the 95% confidence level, consistent with the expected limit value of 5.4 (5.7) in the background-only (Standard Model production) hypothesis.

  • 2. Aabrekk, S.
    et al.
    Tommerup, H.
    Svendsen, S.
    Mahapatra, Krushna
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för teknik och hållbar utveckling.
    Gustavsson, Leif
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för teknik och hållbar utveckling.
    Paiho, S.
    Ala-Juusela, M.
    Deliverable 2.2 Possible market strategies for one stop shops of renovation of single family house.: Report prepared for Nordic Innovation Centre2012Rapport (Övrigt vetenskapligt)
    Abstract [en]

    The document describes examples of missions, visions and strategies based on the potentialpiloting models defined in report 3.2. It is based on status of interest amongst thestakeholders, and the information, figures and challenges which were discussed in the reportD 2.1 Stakeholder interests. The different service models will request different missionsdepending on the stakeholder in charge of the model. Also visions and strategies could bedifferent depending on the composition of services (core business) offered within each pilot aswell as the additional services offered by sub suppliers and the network connected to the pilot.In the report D2.1 Stakeholders interests, the following 5 different piloting models aresuggested:Type 1 Joint venture of industry, retailers and contractorsType 2 Joint venture of construction/renovation, industry and architect/engineering companiesType 3 Complementary businesses expand their business into renovationType 4 Joint venture of type house producer, bank and home owner associationType 5 Energy/building consultant, real estate agent and financing institutions, e.g. bankIn this report we have described mission, vision and market strategies for 4 existing orproposed models; The Project Manager by Bolig Enøk, from Norway (type 1), ENRA concept(type 2) and K-Rauta & Rautia (type 3) from Finland, and ProjectLavenergi (type 2) fromDenmark. Cleantech by Dong Energy (type 3) from Denmark is also addressed, but notdescribed in detail. As there is no concrete examples representing two of the models fromD2.1 (types 4 and 5), we have made a theoretical exercise in developing mission, vision andmarket strategies for type 5 model, while type 4 is not handled.It may be concluded that there are commercial actors in different parts of the value chainwhich see an opportunity in developing different approaches of “one stop shops” for energyefficient holistic renovations. The concepts are still in a development phase and differ inrespect to how they are organised (as supply side). We may say that the pilots in the differentcountries also find inspiration from each other through this research project. Due to thecomplexity of a holistic renovation project, it is a prerequisite with good partnerships even inthe development phase. In all identified models there is however one main actor taking thelead and ownership to the business model.Independent of the business model the responsible company needs to make some strategicchoices. The starting point is the SWOT analysis which sums up all major challenges for therespective business model. How the strategies should be developed is described in this report.Although the main target group for this report is companies seeing an interest in developingbusiness models for renovation, we found some important issues identified in the SWOTanalysis which the authorities may influence including lack of interest in the market (need ofmore public attention through holistic campaigns), fragmented solutions (stop subsidisingsingle measures without a holistic plan), serious vs unserious companies (need of certificationsystems to build credibility), cost focus leads to limited renovation (need of subventionschemes for holistic retrofitting including tax deduction measures) and finally lack incompetence within companies (need of support to training and collaboration acrosscompanies).

  • 3.
    Abbasi, M.
    et al.
    KTH Royal Inst Technol, Stockholm.
    Bäckström, Joakim
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Cornell, A.
    KTH Royal Inst Technol, Stockholm.
    Fabrication of Spin-Coated Ti/TiHx/Ni-Sb-SnO2 Electrode: Stability and Electrocatalytic Activity2018Ingår i: Journal of the Electrochemical Society, ISSN 0013-4651, E-ISSN 1945-7111, Vol. 165, nr 9, s. H568-H574Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A novel three-layer anode having the composition Ti/TiHx/Ni-Sb-SnO2 (Ti/TiHx/NATO) was successfully prepared by a spin-coating and pyrolysis process aiming at a long service lifetime and good electrocatalytic properties for ozone formation. The TiHx as an interlayer was produced by electrochemical cathodic reduction of a coated layer of the TiOx on the titanium substrate. Spin coating and thermal decomposition were used to deposit the Sn-Sb-Ni precursor on the surface of the prepared Ti/TiHx electrode. Cyclic and linear scanning voltammetry, Raman spectroscopy, scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to reveal the electrode performance and morphology. Results show that the onset potential for the oxygen evolution reaction (OER) of Ti/TiHx /NATO is higher than for Ti/NATO. They also indicate that the service lifetime of the Ti/TiHx/NATO is twice as long as the Ti/NATO at a current density of 50 mA.cm(-2) at room temperature. Electrochemical ozone generation and degradation of the methylene blue were investigated to confirm selectivity and activity of the electrodes. After 5 min electrolysis, a current efficiency for ozone generation of 56% was obtained the electrode with TiHx while 38% was obtained on Ti/NATO under same conditions. The results also confirm that the Ti/TiH x /NATO has a higher kinetic rate constant and decolorization efficiency for removal of the methylene blue compare to the Ti/NATO. The rate constant for the pseudo-first ordered reaction of methylene blue degradation showed high values of 350 x 10(-3) min(-1) for Ti/NATO and 440 x 10(-3) min(-1) for Ti/TiHx/NATO. 

  • 4.
    Abedi, Shiva Masoumeh
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för ekoteknik och hållbart byggande.
    Considering a sustainable approach tonitrogen removal of waste waterin south-west Iran2010Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Pollution of the drinking water environment has long been thought to be a primary cause of diseases. According to environmental research, there is a global water quality crisis. From an environmental stand point, eutrophication or accumulation of nitrates in wastewater are expected to cause high ammonium, low pH and increased nitrate concentrations [Koren et al. 2000] which are a critical form of nitrogen that needs our attention. This study considers the case of eutrophication in south-west Iran. This region is located in the Khuzestan province and consists of two basins (Karun and Dez) which can be seen as susceptible to the effect of eutrophication. This paper analyses the environmental pollution impact, economic, and social approaches of two waste water treatment plants. The case study focuses on a waste water treatment plant operated by activated sludge in Iran and the reference study is technology combined Sharon-Anammox treatment in Netherlands. The environmental impact assessment of these Waste Water Treatment Plants (WWTPs) has been analyzed by a Triple Bottom Line method. The hypothesis is to prove a general and specific outlook of the lowest environmental emissions, the lowest costs and creation of better welfare. The other method applied in this study is the barriers of transferring technology. The results show that the combined Sharon-Anammox method is able to significantly reduce the environmental impact based on the methods applied in this study.In this study, the generally considered barriers are problems of methods of transferring combined Sharon-Anammox technology to Iran and the possible obstacles that may be encountered in the transfer of technology to Iran. The result of this study is estimated with respect to an evaluation of political, environmental, economic, social, and technological capacity. The result is that most potential problems are political and economic in nature, which may be because these two issues are so closely related to each other. In this case, lack of management is a problem in the institution of policy, and could affect the economic situation. In fact each of the barriers could be overlapped and affect each other. Regarding all barriers and problems that are in the process of transferring technology, Iran as a developing country would be able to receive technologies.

  • 5.
    Abrahamsson, Erik
    et al.
    Lund University, Sweden.
    Schagatay, Erika
    Mittuniversitetet, Fakulteten för humanvetenskap, Avdelningen för hälsovetenskap.
    A living based on breath-hold diving in the Bajau Laut2014Ingår i: Human Evolution, ISSN 0393-9375, Vol. 29, nr 1-3, s. 171-183Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Sea nomads or 'sea people,' namely the 'Bajau Laut' in the Philippines, Malaysia and Indonesia are skilled divers, and many Bajau Laut make a living from freediving. Men do most of the spearfishing, but women also dive, predominantly for gathering sea food. They start to dive at an early age and spend most days of their lives on and in the sea. Our objective was to study their diving and way of life, to reveal if modern humans have the physiological potential for making a living from breath-hold diving for fishing and gathering. Bajau Laut were visited for a total of nine months, during three periods from 2010-2013, in a combined physiological and social-Anthropological study. The diving physiology studies focused on a total of 10 male divers, whose working day diving while spearfishing was logged with time-depth loggers. One group of 5 divers were engaged in shallow (5-7 m) spearfishing with an underwater working time of 60%, when diving for 2-9 h. The other group of 5 divers went to a mean depth of 10 m and had an underwater working time of 50%, when diving for 3-9 h per day. During that time, between one and eight kilograms of coral fish, blow fish, moray eels and octopuses were caught, per diver. Seafood collected by the women included clams, crustaceans, sea weed and sea cucumbers. Life among the Bajau Laut was much like it was 25 years ago, although in some areas the fish stock is diminishing, making it necessary for the Bajau Laut to spend more time in the water to obtain the same quantity of fish. It was concluded that modern humans do possess the physiological qualities necessary for making a living from hunting-gathering via breath-hold diving.

  • 6. Abrashev, M. V.
    et al.
    Bäckström, Joakim
    Borjesson, L.
    Pissas, M.
    Kolev, N.
    Iliev, M. N.
    Raman spectroscopy of the charge- and orbital-ordered state in La0.5Ca0.5MnO32001Ingår i: Physical Review B, Vol. 64, nr 14Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Polarized Raman spectra from microcrystals of La0.5Ca0.5MnO3 were studied as a function of temperature, excitation photon energy, and scattering configuration. At temperatures below the transition from ferromagnetic metallic phase to antiferromagnetic insulating charge- and orbital-ordered (COO) phase, several lines appear in Raman spectra excited with photon energies (h) over bar omega (L)<2.5 eV. We argue that their appearance signals ordering and freezing of the Jahn-Teller distortions at this transition temperature into a superstructure with a doubled elementary cell. We suggest a simplified structural model based on an analysis of the normal phonon modes in the COO phase, neglecting the octahedral tilts and containing ordered Mn4+O6 (undistorted) and Mn3+O6 (Jahn-Teller distorted) octahedra. The symmetries of the experimentally observed Raman lines are determined by comparing their relative intensities to those predicted by the polarization selection rules for a finely twinned quasicubic crystal. The most intensive Raman lines are assigned to definite normal modes in close comparison with corresponding modes in COO layered manganites and undoped RMnO3 (R=La, Y).

  • 7. Abrashev, M. V.
    et al.
    Bäckström, Joakim
    Borjesson, L.
    Popov, V. N.
    Chakalov, R. A.
    Kolev, N.
    Meng, R. L.
    Iliev, M. N.
    Raman spectroscopy of CaMnO(3): Mode assignment and relationship between Raman line intensities and structural distortions2002Ingår i: Physical Review B Condensed Matter, ISSN 0163-1829, E-ISSN 1095-3795, Vol. 65, nr 18, s. 1-9Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Polarized Raman spectra of oriented finely twinned CaMnO(3) thin films and nonpolarized Raman spectra of CaMnO(3) ceramics were studied at room temperature using several excitation laser wavelengths. The selection rules for the polarized Raman spectra, obtained from samples consisting of finely twinned orthorhombic domains, were calculated and the symmetry of all observed Raman lines was determined. The relationship between the intensity of the Raman lines and the distortions in the ABO(3) perovskites with GdFeO(3)-type structure is discussed. These distortions can be described as superposition of four simple basic distortions: two MnO(6) octahedral tilts, Jahn-Teller deformation of Mn(3+) O(6) octahedra, and shift of the A ions from their sites in the ideal perovskite. Twenty of the 24 Raman-allowed modes in the real GdFeO(3)-type structure have counterparts in only one of the four simpler structures, obtained by a single basic distortion. The assignment of the Raman lines of CaMnO(3) to definite atomic vibrations, most of them activated by a single basic distortion, was made in close comparison with the results of lattice dynamical calculations and the Raman spectra of isostructural LaMnO(3) and CaGeO(3).

  • 8. Acx, A. G.
    et al.
    Berg, M
    Karlsson, M
    Lindström, M
    Pettersson, Stefan
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för informationsteknologi och medier.
    Slanina, P
    Zander, J
    Radio Resource Management2000Ingår i: Third generation mobile communication systems, Boston, Mass: Artech House, 2000, s. 386-Kapitel i bok, del av antologi (Övrigt vetenskapligt)
  • 9.
    Adams, M L
    et al.
    University of Canterbury, New Zealand.
    Hawke, D J
    University of Canterbury, New Zealand.
    Nilsson, Nils
    University of Canterbury, New Zealand.
    Powell, K J
    University of Canterbury, New Zealand.
    The relationship between soil solution pH and Al3+ concentrations in a range of South Island (New Zealand) soils2000Ingår i: Australian Journal of Soil Research, ISSN 0004-9573, E-ISSN 1446-568X, Vol. 38, nr 1, s. 141-153Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Concentrations of Al3+ were calculated in soil solutions from concentrations of the monomeric ‘reactive Al’ species ([Al3+] + [Al(OH)2+] + [Al(OH)2+] + [AlF2+]) obtained using a recently reported flow injection analysis (FIA) chelating resin technique. Soil solution samples came from 7 sites encompassing a range of New Zealand soils (Brown, Gley, Pallic, Podzol, and Recent Soils) and vegetation types (pasture, shrub lands, and indigenous and exotic forest). Previously published data from a further 7 sites, obtained using a rapid (7 s) FIA technique, were transformed to give compatible results. The resultant data (n = 85) covered the pH range 2.7–7.6, and showed a single curvilinear relationship for log [Al3+] v. soil solution pH, regardless of vegetation or soil type. At pH >5.6, the data had a slope of –2.98 and fell between the amorphous Al(OH)3 and gibbsite solubility lines. At pH <5.0, the data had a slope of –0.46; further, the soil solutions were under-saturated with respect to both minerals. These results are interpreted as indicating control of Al solubility by Al(OH)3(s) (at pH >5.6) and soil organic matter (at pH <5.0), respectively. This interpretation is supported by data from a pH-dependent Al–fulvic acid binding curve, for which calculated values of [Al3+] follow the same curvilinear relationship determined from the soil solution samples.

  • 10.
    Adborn, Mats
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för informationsteknologi och medier.
    Visualisering av datastrukturer: Utveckling av ett tolkningsverktyg2013Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Tolking och tillgodogörande av datastrukturer, organiserad information ochprogramkodsfiler förekommer frekvent i arbete med mjukvaruutveckling. Dennainformation är lagrad i textbaserad form och dess förståelse kräver stornoggrannhet och tidsinvestering från utvecklarens sida. I syfte att försöka förenklaprocessen beskriver detta examensarbete utvecklingen av en prototyp till ettverktygsprogram, vilket automatiserar tolkning av XML-data och källkodsfiler förprogrammeringsspråken C och C++. Programmet skapar och presenterar sedanen visuell graf av den undersökta strukturen. Algoritmen klarar av att presenteragodtyckligt stora XML-filer samt ett begränsat antal samtidigt inlästakällkodsfiler. Effekterna på tolkningens tidsåtgång och dess tillförlitlighet harutvärderats i en undersökning bland studenter inom mjukvaruutveckling.Resultatet visade på en viss mätbar ökning i antalet korrekta slutsatser somanvändaren drog efter att ha studerat datasammanhanget grafiskt jämfört meddess ursprungliga textform. Tidsåtgången mättes inte mer noggrant än subjektivthos användarna, av vilka en övervägande andel ansåg att tiden förkortades medden grafiska representationen till deras hjälp. Examensarbetet visar attanvändandet av detta eller motsvarande verktyg kan öka tillgodogörandet avdatastrukturer genom att både höja graden av tillförlitligheten hos dennainformation och samtidigt minska tidsåtgången. Däremot är den kvantifierbaravinsten av dessa resultat inte statistiskt säkerställd till en högre grad.

  • 11.
    Adolfsson, David
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för ekoteknik och hållbart byggande.
    Diverting human urine from outhouses into agriculture in Nicaragua: for sanitation, fertilizer and recycling purposes2017Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Human urine is a   valuable resource which has good potential to be used as a fertilizer all   over the world. In the developing countries sanitation and food security are   both issues that need urgent attention.    A urine separation toilet can be constructed with minimal investment   in the Nicaraguan context, and the usage of the urine as a fertilizer can   help establish higher yields and is a good alternative to chemical   fertilizers. This field experiment is trying this in practice in the context   of rural Nicaragua, to determine the effect of urine on two plants on. For   this study, the common bean (Phaseolus vulgaris) and the Chaya (Cnidoscolus   aconitifolius) was selected and the results confirm that urine has potential   as a fertilizer in the Nicaragua context. The common bean yield was twice as   large after urine fertilization and the Chaya reacted positively to urine   fertilization. For urine separation purposes, two different separators were   constructed on the site to showcase the benefits with separating the urine   from the faeces, creating lower latrine volume and better sanitation in the   outhouse. The risks associated with human urine are low if the urine is   separated securely to avoid crosscontamination from faeces. If a   safety-barrier system is adopted, the overall risks with using urine as a   fertilizer are negligible. The spreading potential of urine separation and   fertilization in rural Nicaragua is high, but more experiments and   demonstrations are needed to reach adopters of the technology.  

  • 12.
    Afewerki, Samson
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Development of catalytic enantioselective C-C bond-forming and cascade transformations by merging homogeneous or heterogeneous transition metal catalysis with asymmetric aminocatalysis2014Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    Chiral molecules play a central role in our daily life and in nature, for instance the different enantiomers or diastereomers of a chiral molecule may show completely different biological activity. For this reason, it is a vital goal for synthetic chemists to design selective and efficient methodologies that allow the synthesis of the desired enantiomer. In this context, it is highly important that the concept of green chemistry is considered while designing new approaches that eventually will provide more environmental and sustainable chemical synthesis.The aim of this thesis is to develop the concept of combining transition metal catalysis and aminocatalysis in one process (dual catalysis). This strategy would give access to powerful tools to promote reactions that were not successful with either transition metal catalyst or the organocatalyst alone. The protocols presented in this thesis based on organocatalytic transformations via enamine or iminium intermediates or both, in combination with transition metal catalysis, describes new enantioselective organocatalytic procedures that afford valuable compounds with high chemo- and enantioselectivity from inexpensive commercial available starting materials. In paper I, we present a successful example of dual catalysis: the combination of transition metal activation of an electrophile and aminocatalyst activation of a nucleophile via enamine intermediate. In paper II, the opposite scenario is presented, here the transition metal activates the nucleophile and the aminocatalyst activates the electrophile via an iminium intermediate. In paper III,we present a domino Michael/carbocyclisation reaction that is catalysed by a chiral amine (via iminium/enamine activation) in combination with a transition metal catalysts activation of an electrophile. In paper IV, the concept of dual catalysis was further extended and applied for the highly enantioselective synthesis of valuable structural scaffolds, namely poly-substituted spirocyclic oxindoles. Finally, in paper V the concept of dual catalysis was expanded, by investigating more challenging and environmentally benign processes, such as the successful combination of a heterogeneous palladium and amine catalysts for the highly enantioselective synthesis of functionalised cyclopentenes, containing an all carbonquaternary stereocenter, dihydrofurans and dihydropyrrolidines.

  • 13.
    Afewerki, Samson
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för tillämpad naturvetenskap och design.
    Direct regiospecific and highly enantioselective intermolecular a-allylic alkylation of aldehydes by combination of transition metal and chiral amine catalysts2012Konferensbidrag (Refereegranskat)
    Abstract [en]

    The direct intermolecular regiospecific and highly enantioselective a-allylic alkylation of linear aldehydes by combination of achiral bench stable Pd(0) complexes and simple chiral amines as co-catalysts is disclosed. The co-catalytic asymmetric chemoselective and regiospecific a-allylic alkylation reaction is linked in tandem with in situ reduction to give the corresponding 2-alkyl alcohols with high enantiomeric ratios (up to 98:2 er). It is also an expeditious entry to valuable 2-alkyl substituted hemiacetals and 2-alkyl-butane-1,4-diols.

  • 14.
    Afewerki, Samson
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Alimohammadzadeh, Rana
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Osong, Sinke H.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för kemiteknik.
    Tai, Cheuk-Wai
    The Arrhenius Laboratory, Stockholm University.
    Engstrand, Per
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för kemiteknik.
    Cordova, Armando
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Sustainable Design for the Direct Fabrication and Highly Versatile Functionalization of Nanocelluloses2017Ingår i: Global Challenges, ISSN 2056-6646, Vol. 1, nr 7, artikel-id 1700045Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This study describes a novel sustainable concept for the scalable direct fabrication and functionalization of nanocellulose from wood pulp with reduced energy consumption. A central concept is the use of metal-free small organic molecules as mediators and catalysts for the production and subsequent versatile surface engineering of the cellulosic nanomaterials via organocatalysis and click chemistry. Here, “organoclick” chemistry enables the selective functionalization of nanocelluloses with different organic molecules as well as the binding of palladium ions or nanoparticles. The nanocellulosic material is also shown to function as a sustainable support for heterogeneous catalysis in modern organic synthesis (e.g., Suzuki cross-coupling transformations in water). The reported strategy not only addresses obstacles and challenges for the future utilization of nanocellulose (e.g., low moisture resistance, the need for green chemistry, and energy-intensive production) but also enables new applications for nanocellulosic materials in different areas.

  • 15.
    Afewerki, Samson
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för naturvetenskap, teknik och matematik.
    Breistein, Palle
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för naturvetenskap, teknik och matematik.
    Pirttilä, Kristian
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för naturvetenskap, teknik och matematik.
    Deiana, Luca
    Univ Stockholm, Arrhenius Lab, Dept Organ Chem, S-10691 Stockholm, Sweden.
    Dziedzic, Pawel
    Univ Stockholm, Arrhenius Lab, Dept Organ Chem, S-10691 Stockholm, Sweden.
    Ibrahem, Ismail
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för naturvetenskap, teknik och matematik.
    Córdova, Armando
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för naturvetenskap, teknik och matematik.
    Catalytic Enantioselective beta-Alkylation of alpha,beta-Unsaturated Aldehydes by Combination of Transition-Metal- and Aminocatalysis: Total Synthesis of Bisabolane Sesquiterpenes2011Ingår i: Chemistry - A European Journal, ISSN 0947-6539, E-ISSN 1521-3765, Vol. 17, nr 32, s. 8784-8788Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Branching out! The first co-catalytic enantioselective (up to 98:2 e.r.) β-alkylation of α,β-unsaturated aldehydes by combination of simple chiral amine and copper catalysts provides β-branched aldehydes in a one-pot protocol (see scheme). The methodology was applied to the short total syntheses of bisabolane sesquiterpenes (S)-(+)-curcumene, (E)-(S)-(+)-3- dehydrocurcumene and (S)-(+)-tumerone. © 2011 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  • 16.
    Afewerki, Samson
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap. Stockholm Univ, Arrhenius Lab, Berzelii Ctr EXSELENT, Stockholm.
    Cordova, Armando
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap. Stockholm Univ, Arrhenius Lab, Berzelii Ctr EXSELENT, Stockholm.
    Combinations of Aminocatalysts and Metal Catalysts: A Powerful Cooperative Approach in Selective Organic Synthesis2016Ingår i: Chemical Reviews, ISSN 0009-2665, E-ISSN 1520-6890, Vol. 116, nr 22, s. 13512-13570Artikel, forskningsöversikt (Refereegranskat)
    Abstract [en]

    The cooperation and interplay between organic and metal catalyst Arninocatalysis systems is of utmost importance in nature and chemical synthesis. Here innovative and selective cooperative catalyst systems can be designed by combining two catalysts that complement rather than inhibit one another. This refined strategy can permit chemical transformations unmanageable by either of the catalysts alone. This review summarizes innovations and developments in selective organic synthesis that have used cooperative dual catalysis by combining simple aminocatalysts with metal catalysts. Considerable efforts have been devoted to this fruitful field. This emerging area employs the different activation modes of amine and metal catalysts as a platform to address challenging reactions. Here, aminocatalysis (e.g., enamine activation catalysis, iminium activation catalysis, single occupied molecular orbital (SOMO) activation catalysis, and photoredox activation catalysis) is employed to activate unreactive carbonyl substrates. The transition metal catalyst complements by activating a variety of substrates through a range of interactions (e.g., electrophilic pi-allyl complex formation, Lewis acid activation, allenylidene complex formation, photoredox activation, C-H activation, etc.), and thereby novel concepts within catalysis are created. The inclusion of heterogeneous catalysis strategies allows for "green" chemistry development, catalyst recyclability, and the more eco-friendly synthesis of valuable compounds.

  • 17.
    Afewerki, Samson
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Guangning, Ma
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Ibrahem, Ismail
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för kemiteknik.
    Cordova, Armando
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Highly enantioselective organo/metal cooperative catalysis for construction of spirocyclopentaneoxindoles2014Ingår i: Abstract of Papers of the American Chemical Society, ISSN 0065-7727, Vol. 248, artikel-id 173-ORGNArtikel i tidskrift (Övrigt vetenskapligt)
  • 18.
    Afewerki, Samson
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för tillämpad naturvetenskap och design.
    Ibrahem, Ismail
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för tillämpad naturvetenskap och design.
    Rydfjord, Jonas
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för tillämpad naturvetenskap och design.
    Breistein, Palle
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för tillämpad naturvetenskap och design.
    Córdova, Armando
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för tillämpad naturvetenskap och design.
    Direct Regiospecific and Highly Enantioselective Intermolecular α-Allylic Alkylation of Aldehydes By Combination of Transition Metal and amine Catalysts2012Ingår i: Chemistry - A European Journal, ISSN 0947-6539, E-ISSN 1521-3765, Vol. 18, nr 10, s. 2972-2977Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The first direct intermolecular regiospecific and highly enantioselective α-allylic alkylation of linear aldehydes by a combination of achiral bench-stable Pd 0 complexes and simple chiral amines as co-catalysts is disclosed. The co-catalytic asymmetric chemoselective and regiospecificα-allylic alkylation reaction is linked in tandem with in situ reduction to give the corresponding 2-alkyl alcohols with high enantiomeric ratios (up to 98:2 e.r.; e.r.=enantiomeric ratio). It is also an expeditious entry to valuable 2-alkyl substituted hemiacetals, 2-alkyl-butane-1,4-diols, and amines. The concise co-catalytic asymmetric total syntheses of biologically active natural products (e.g., Arundic acid) are disclosed. Go organic! Directintermolecular regiospecific and highly enantioselective α-allylic alkylation of linear aldehydes by a combination of achiral bench-stable Pd 0complexes and simple chiral amines as co-catalysts is disclosed (see scheme). Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  • 19.
    Afewerki, Samson
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap. Stockholm Univ, Berzelii Ctr EXSELENT, SE-10691 Stockholm, Sweden.
    Ma, Guangning
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Ibrahem, Ismail
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för kemiteknik.
    Liu, Leifeng
    Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden .
    Sun, Junliang
    Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden .
    Cordova, Armando
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap. Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden .
    Highly Enantioselective Control of Dynamic Cascade Transformations by Dual Catalysis: Asymmetric Synthesis of Polysubstituted Spirocyclic Oxindoles2015Ingår i: ACS Catalysis, ISSN 2155-5435, E-ISSN 2155-5435, Vol. 5, nr 2, s. 1266-1272Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The highly enantioselective (up to >99.5:0.5 er) synthesis of polysubstituted spirocyclic oxindoles with four new contiguous stereocenters, including the spiro all-carbon quaternary center, is disclosed. It is accomplished by the highly stereoselective control of a dynamic conjugate/intramolecular allylic alkylation relay sequence based on the synergistic cooperation of metal and chiral amine catalysts in which the careful selection of organic Nand, metal complex, and chiral amine is essential. The intermolecular C-C bond-forming step occurred only when both the metal and chiral amine catalysts were present.

  • 20.
    Afewerki, Samson
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för naturvetenskap. Stockholm University, Stockholm.
    Wang, J. -X
    Jilin University, Changchun, China.
    Liao, W. -W
    Jilin University, Changchun, China.
    Cordova, Armando
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för naturvetenskap. Stockholm University, Stockholm.
    The Chemical Synthesis and Applications of Tropane Alkaloids2019Ingår i: Alkaloids: Chemistry and Biology, ISSN 1099-4831, Vol. 81, s. 151-233Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Tropanes are an important class of alkaloid natural products that are found in plants all over the world. These compounds can exhibit significant biological activity and are among the oldest known medicines. In the early 19th century, tropanes were isolated, characterized, and synthesized by notable chemical researchers. Their significant biological activities have inspired tremendous research efforts toward their synthesis and the elucidation of their pharmacological activity both in academia and in industry. In this chapter, which addresses the developments in this field since 1994, the focus is on the synthesis of these compounds, and several examples of sophisticated synthetic protocols involving both asymmetric and catalytic approaches are described. In addition, the structures of more than 100 new alkaloids are included as well as the applications and pharmacological properties of some tropane alkaloids. 

  • 21.
    Afram, Gabriel
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för informationssystem och -teknologi.
    Genomsökning av filsystem för att hitta personuppgifter: Med Linear chain conditional random field och Regular expression2018Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Den nya lagen General data protection regulation (GDPR) började gälla för alla företag inom Europeiska unionen efter den 25 maj. Detta innebär att det blir strängare lagkrav för företag som på något sätt lagrar personuppgifter. Målet med detta projekt är därför att underlätta för företag att uppfylla de nya lagkraven. Detta genom att skapa ett verktyg som söker igenom filsystem och visuellt visar användaren i ett grafiskt användargränssnitt vilka filer som innehåller personuppgifter. Verktyget använder Named Entity Recognition med algoritmen Linear Chain Conditional Random Field som är en typ av ”supervised” learning metod inom maskininlärning. Denna algoritm används för att hitta namn och adresser i filer. De olika modellerna tränas med olika parametrar och träningen sker med hjälp av biblioteket Stanford NER i Java. Modellerna testas genom en testfil som innehåller 45 000 ord där modellerna själva får förutspå alla klasser till orden i filen. Modellerna jämförs sedan med varandra med hjälp av mätvärdena precision, recall och F-score för att hitta den bästa modellen. Verktyget använder även Regular expression för att hitta e- mails, IP-nummer och personnummer. Resultatet på den slutgiltiga maskininlärnings modellen visar att den inte hittar alla namn och adresser men att det är något som kan förbättras genom att öka träningsdata. Detta är dock något som kräver en kraftfullare dator än den som användes i detta projekt. En undersökning på hur det svenska språket är uppbyggt skulle även också behöva göras för att använda de lämpligaste parametrarna vid träningen av modellen.

  • 22.
    Agrawal, P.
    et al.
    Uppsala Universitet.
    Ahlén, Anders
    Uppsala Universitet.
    Olofsson, Tomas
    Uppsala Universitet.
    Gidlund, Mikael
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för informations- och kommunikationssystem.
    Long Term Channel Characterization for Energy Efficient Transmission in Industrial Environments2014Ingår i: IEEE Transactions on Communications, ISSN 0090-6778, E-ISSN 1558-0857, Vol. 62, nr 8, s. 3004-3014Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    One of the challenges for a successful use of wireless sensor networks in process industries is to design networks with energy efficient transmission, to increase the lifetime of the deployed network while maintaining the required latency and bit-error rate. The design of such transmission schemes depend on the radio channel characteristics of the region. This paper presents an investigation of the statistical properties of the radio channel in a typical process industry, particularly when the network is meant to be deployed for a long time duration, e.g., days, weeks, and even months. Using 17–20-h-long extensive measurement campaigns in a rolling mill and a paper mill, we highlight the non-stationarity in the environment and quantify the ability of various distributions, given in the literature, to describe the variations on the links. Finally, we analyze the design of an optimal received signal-to-noise ratio (SNR) for the deployed nodes and show that improper selection of the distribution for modeling of the variations in the channel can lead to an overuse of energy by a factor of four or even higher.

  • 23.
    Agrawal, Piyush
    et al.
    Uppsala University.
    Ahlén, Anders
    Uppsala University.
    Olofsson, Tomas
    Uppsala University.
    Gidlund, Mikael
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för informations- och kommunikationssystem.
    Characterization of Long Term Channel Variations in Industrial Wireless Sensor Networks2014Ingår i: IEEE International Conference on Communications (ICC'14), IEEE conference proceedings, 2014Konferensbidrag (Refereegranskat)
  • 24.
    Ahlin, Karin
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för informationsteknologi och medier.
    Aspekter på nyttometoder för teknikinformation ur ett livscykelperspektiv2012Rapport (Övrig (populärvetenskap, debatt, mm))
  • 25.
    Ahlin, Karin
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för data- och systemvetenskap.
    Measuring the Immeasurable?  The Intangible Benefits of Digital Information2019Ingår i: Proceedings of the 52nd Hawaii International Conference on System Sciences  2019, Hawaii International Conference on System Sciences , 2019, s. 6176-6185Konferensbidrag (Refereegranskat)
    Abstract [en]

    The benefits of digital information are mostly viewed as intangible, meaning that they can be hard to measure. This lack of measurements makes the benefits difficult to compare and communicate, creating problems for e.g. decision-making and the strategic development of specific digital information. Therefore, I conducted a literature review to find out how the combination of intangible benefits and measurements are dealt with in the information systems field. I found that we measure the intangible benefits of information systems or information technology. Here, the measurement method is divided into input, rule, and output. The input consists of predetermined individual benefits, areas of predetermined benefits, or interpreted benefits from respondents. The rule follows an accepted theory or contextual adjusted rules, and the output (benefit) can be seen as either financial or non-financial. The avenue for further research focuses on the digital information as the primary resource, not information systems or information technology.

  • 26.
    Ahlin, Karin
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för data- och systemvetenskap.
    Open Data and its Benefits2018Konferensbidrag (Övrigt vetenskapligt)
  • 27.
    Ahlin, Karin
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för data- och systemvetenskap.
    Rätt teknikinformation är hårdvaluta som går att mäta2018Övrigt (Övrig (populärvetenskap, debatt, mm))
  • 28.
    Ahlin, Karin
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för data- och systemvetenskap.
    Värdeadderande aktiviteter i produktionsprocessen av TI och tillhörande effektivitetsmätningar2013Rapport (Refereegranskat)
  • 29.
    Ahlin, Karin
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för data- och systemvetenskap.
    Ahmad, Awais
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för data- och systemvetenskap.
    Mozelius, Peter
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för data- och systemvetenskap.
    Determining Testbed Requirements for Technology Enhanced Speech Rehabilitation after Stroke -the Informed Co-workers' View Point2019Ingår i: GLOBAL HEALTH 2019: The Eighth International Conference on Global Health Challenges / [ed] Hassan Khachfe, International Academy, Research and Industry Association (IARIA), 2019, s. 20-27Konferensbidrag (Refereegranskat)
    Abstract [en]

    This paper analyses and discusses the identified requirements for technology enhanced systems for speech rehabilitation after a stroke. To stroke patients, a speech injury can be devastating, impacting their abilities to speak, listen, read, and write. Therefore, speech therapy is recommended as early as possible. To address the challenge with a growing percentage of older adults, therapy should include a variety of Technology Enhanced Systems (TES) to support the idea of independent living. These systems must be adapted to the patients' needs and speech therapy requirements. Based on a design science approach, requirements were determined from an analysis of ten semi-structured interviews with knowledgeable informants. Findings indicate several important requirements, such as: TES should be motivating, joyful, individualised and built on patients' needs and on speech therapists' professional knowledge. Furthermore, TES services must be user-friendly and provide training in each patient's mother tongue. Added to these requirements are ease of including close relatives as supporting persons, as well as accessibility through portable devices.

  • 30.
    Ahlin, Karin
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för data- och systemvetenskap.
    Persson Slumpi, Thomas
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för data- och systemvetenskap.
    A Communication-model for Intangible Benefits of Digital Information2015Ingår i: 2015 Americas Conference on Information Systems, AMCIS 2015, 2015Konferensbidrag (Refereegranskat)
    Abstract [en]

    The communication of the intangible benefits to different stakeholders is important at the development for organizational resource and could be described as a boundary-spanning activity. In this study we build on Ahlin’s model (2014) and illustrates categorization of intangible benefits of digital information by using Carlile’s (2002; 2004) efficient boundary objects, the syntactic, semantic and pragmatic. Qualitative empirical pictures from three cases are illustrated by questions, derived from the efficient boundary objects. The illustrations show that this is an accessible path forward and that the illustrations can be changed to further research with the goal for practical test the communication model.The communication of the intangible benefits to different stakeholders is important at the development for organizational resource and could be described as a boundary-spanning activity. In this study we build on Ahlin’s model (2014) and illustrates categorization of intangible benefits of digital information by using Carlile’s (2002; 2004) efficient boundary objects, the syntactic, semantic and pragmatic. Qualitative empirical pictures from three cases are illustrated by questions, derived from the efficient boundary objects. The illustrations show that this is an accessible path forward and that the illustrations can be changed to further research with the goal for practical test the communication model. 

  • 31.
    Ahlin, Karin
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för data- och systemvetenskap.
    Persson Slumpi, Thomas
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för data- och systemvetenskap.
    Öberg, Lena-Maria
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för data- och systemvetenskap.
    Nyttan med CM2013Ingår i: Configuration Management i teknikinformationens tjänst: en antologi / [ed] Margaretha Eriksson och Lena-Maria Öberg, Sundsvall: Mittuniversitetet , 2013Kapitel i bok, del av antologi (Övrig (populärvetenskap, debatt, mm))
  • 32.
    Ahlin, Karin
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för informationsteknologi och medier.
    Saariko, Ted
    Göteborgs Universitet.
    A semiotic perspective on semantics interoperability2012Konferensbidrag (Refereegranskat)
    Abstract [en]

    While information technology enables us to access more material than ever before, we need to come to grips with the disagreeable fact that data is not information. Sharing data without safeguarding comprehension may lead to confusion at best and disaster at worst. The issue at hand is one of ensuring semantic interoperability between actors from disparate contexts. Research into this problem is plentiful, but typically focused around specific subject matters, limiting its appeal to a limited range of scholars and practitioners. Based upon a literary study, we identify two extreme approaches to managing semantic interoperability. These are denoted top-down and bottom-up. We illustrate real world instances of these approaches using the TFI-model based on a case study encompassing two organizations. Our theoretical model is found to be a viable lens through which to generalize and interpret issues pertaining to semantic interoperability between human actors. We therefore see a need for further research into human-based on semantic interoperability.

  • 33.
    Ahlin, Karin
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för data- och systemvetenskap.
    Åslund, Anna
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för kvalitetsteknik, maskinteknik och matematik.
    Utveckling och test av arbetsmetod för identifiering av nytta och värde i produktionsprocessen i framtagande av teknikinformation.2014Rapport (Övrigt vetenskapligt)
  • 34.
    Ahmad, Awais
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för data- och systemvetenskap.
    Mozelius, Peter
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för data- och systemvetenskap.
    Ahlin, Karin
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för data- och systemvetenskap.
    Testbed requirements for technology enhanced stroke rehabilitation to support independent living2019Konferensbidrag (Refereegranskat)
    Abstract [en]

    An identified global phenomenon is that, as the percentage of older adults increases, new challenges arise for medical care and rehabilitation. Several research studies have presented e-health as a promising concept to support the idea of independent living among patients with chronic diseases. The Mid Sweden region has a relatively old population and is a region where people live with long distances to the nearest hospital or health care centres. This study had a focus on defining testbed requirements for a technology enhanced stroke rehabilitation adapted to the specific region. The focal research question to answer in this study was: What are the requirements and their associated benefits and barriers of using technology-enhanced systems instead of traditional techniques for stroke rehabilitation in the Mid Sweden region? With Design Science as the overall research strategy, data was collected by semi-structured interviews with key stakeholders in the field of stroke rehabilitation. A deductive thematic analysis was conducted where important themes were grouped into the four main requirement categories of: Technical, Human-computer-interaction, Clinic and Sustainability. Beside the more specific requirements, an interesting finding was the division of stroke rehabilitation into the categories motoric, cognitive and speech rehabilitation; also, how technology enhanced solutions might be used in these categories. Each category has a potential for a successful use of technology enhanced services, but as the standard procedure in traditional stroke rehabilitation each patient needs a personalised treatment.   

  • 35.
    Ahmed, Lisa
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för matematik och ämnesdidaktik. Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för matematik och ämnesdidaktik.
    Betydelsen av elevers sociala relationer för att må bra i skolan2019Självständigt arbete på avancerad nivå (yrkesexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Avsikten med min studie är att veta hur sociala relationer stimulerar elever att må bra i skolan. Hur lärare och elevhälsoteam ser på sociala relationens betydelse för elevers välmående i skolan. Lärare och elevhälsoteam samarbetar i skolan för elevers välmående, men vilka hinder ser de för att utveckla elevers sociala relationer. För detta syfte har jag intervjuat ett antal lärare och kuratorer om deras arbetssätt, hur de planerar för en undervisning som bygger på sociala relationer, hur sociala relationer och elevhälsa förhåller sig till varandra enligt dem. Samtidigt har jag undersökt vilka hinder som de ser till att utveckla elevers sociala relationer samt hur de ser på vårdnadshavarens roll här.

    Det resultatet som jag ser i min studie är att i huvudsak anser samtliga pedagoger och kuratorer att sociala relationer har en avgörande roll i elevers välmående i skolan. Samtliga informanter tycker att elever som har bra sociala färdigheter mår bra både fysiskt och psykiskt och i sin tur lyckas bra i skolarbetet. De anser också att ett starkt samarbete mellan pedagoger, elevhälsoteam och hem är väldigt viktigt för att utveckla elevers sociala färdigheter. De tycker att om samarbetet mellan parter fungerar bra då elever känner sig trygga i skolan. Resultatet blir att elever som kan skapa en bärande relation både med vuxna och andra kompisar, blir även motiverade i skolarbetet och lyckas i skolan.

  • 36.
    Ahmed, Lisa
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för ämnesdidaktik och matematik.
    Lärarstyrd lek i matematikundervisningen: Dess möjligheter och begränsningar för elevens lärande.2018Självständigt arbete på avancerad nivå (yrkesexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Avsikten med min studie är att veta hur lärarstyrd lek påverkar matematikundervisningen samt se vilka möjligheter och begränsningar som metoden lärarstyrd lek har. För detta syfte har jag intervjuat ett antal lärare om detta arbetssätt, hur de planerar för en undervisning som bygger på lärarstyrd lek, vad de menar med lärarstyrd lek, vilka möjligheter och begränsningar de ser samt om de märker att de stimulerar eleven i matematikundervisningen med den lärarstyrda leken.Det resultatet som jag ser i min studie är att i huvudsak anser samtliga pedagoger att det finns en positiv påverkan på lärandet när lärarstyrd lek genomförs i undervisningen. De pekar på några begränsande faktorer som tidsbrist, höga arbetsbelastning, problem med elevers sociala sampel. Trots att arbetssättet möter vissa utmaningar så bedömer samtliga pedagoger att lärarstyrd lek i matematikundervisningen ökar elevens motivation i lärandet och gör ämnet roligt och intressant.

  • 37.
    Ahonen, Mikko
    University of Tampere.
    Designing an Information System for Open Innovation – Bridging the Gap between Individual and Organisational Creativity2011Doktorsavhandling, monografi (Övrigt vetenskapligt)
    Abstract [en]

    History shows that those companies that continue to invest in their innovative capabilities during tough economic times are often those that prosper when growth returns. Recently, information systems (IS) have been harnessed to support innovation. Even with IS support, innovation campaigns and suggestion management systems often end up in failure. Employees and customers are reluctant to share their best ideas. Individuals interests, motivation, creativity and life-long learning are seldom adequately supported by companies. In the information systems research area there is very little research on creativity and creativity has traditionally been studied mainly within the decision support systems (DSS) research area. This DSS area has focused on rather mechanistic idea-generation processes lacking a focus on individuals and their creativity. Even in the emerging open innovation paradigm, individual and group levels have come in for little research. From these starting points, we became interested in ways to improve existing information systems and innovation practices. The research question here is: How to design an artefact to support learning and creativity within the open innovation paradigm. Since we are interested in building new artefacts, we will utilise design research methods, particularly the Design Science Research Methodology (DSRM) process model. Our three artefacts are the results of our work. The first artefact, the Mobile Personal Development Plan, is focused on extending development talks between an employer and employees within human resource management to support innovation. Curiosity and emerging interests are seen here as idea seeds and future competences. The second artefact, the iPortfolio, extends this with a life-long learning and problem-solving focus. The third artefact, the Brokering Platform for Open Innovation, finally focuses on collaboration with customers and crowds. The software development was time consuming in our work and only the first artefact is demonstrated as a functional software prototype. Our pilot in an SME company illustrates practical requirements and usability issues related to the software. Additionally, a Delphi study with international open innovation experts served to identify future related requirements. Given the lack of creativity research in the IS field, we claim that our work makes an appropriate contribution. To the design research literature our input is new usage cases of the previously mentioned DSRM process model. Our results apply to organisations, where the employees work in dispersed teams and need an information system to communicate their emerging ideas and interests for more systematic problem-solving. The managers in our study reported that there are plenty of ideas available, but the challenge is to ensure the commitment of external resources to the actual innovation building. The integration of learning into the innovation and problem-solving activity should be motivational. We therefore discuss human resource management in relation to creativity and innovation. Surprisingly, in our pilots we noticed difficulties in time management in mobile settings and the current health risk debate gradually changed our artefact design, so this work also provides a critical view on mobility and on the access anytime, anywhere phenomenon. Finally, we suggest improvements to existing innovation practices in organisations.

  • 38.
    Ahonen, Mikko
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för informationssystem och -teknologi.
    Designing to archive open data – Case: ISERV e-services project.2017Konferensbidrag (Refereegranskat)
  • 39. Ahonen-Jonnarth, U.
    et al.
    Van Hees, P.A.W.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för naturvetenskap.
    Lundström, Ulla
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för naturvetenskap.
    Finlay, R.D.
    Organic acids produced by mycorrhizal Pinus sylvestris exposed to elevated aluminium and heavy metals concentrations2000Ingår i: New Phytologist, ISSN 0028-646X, E-ISSN 1469-8137, Vol. 146, nr 3, s. 557-567Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A cultivation method was developed to enable exposure of ectomycorrhizal plants with intact extramatrical mycelium to solutions containing different concentrations of aluminium or heavy metals. Pinus sylvestris seedlings colonized by Suillus variegatus (two isolates), Rhizopogon roseolus or Paxillus involutus (two isolates) were used. Seedlings were transferred to Petri dishes containing glass beads and exposed to elevated concentrations of Al, Cd, Cu, or Ni in two ways: immediately following transfer; and after allowing mycorrhizal seedlings to develop an extraradical mycelium that colonized the interface between the upper surface of the beads and the metal-containing solution. Production of organic acids in mycorrhizal and non-mycorrhizal systems was measured by withdrawing samples from the solution and analyzing by HPLC. In most experiments, levels of oxalic acid were significantly higher in mycorrhizal treatments than in non-mycorrhizal controls. The measured levels of organic acids were variable, but the results obtained suggest that production of oxalic acid is stimulated by exposure to elevated Al in mycorrhizal seedlings colonized by S. variegatus and R. roseolus. Elevated Al concentrations also increased oxalic acid production by non-mycorrhizal seedlings significantly in two of four Al experiments performed, but the measured concentrations were significantly lower than in corresponding mycorrhizal treatments in both cases. Malonic acid was found in the culture solution of non-mycorrhizal had P. involutus-colonized seedlings, but only trace amounts were found in S. variegatus or R. roseolus-infected seedlings. Citric, shikimic, lactic, acetic, propionic, fumaric, formic, iso-butyric and butyric acid were found in variable concentrations. Production of oxalic acid by seedlings ColoniZed by S. variegatus BL or P. involutus was not stimulated by exposure to 0.44 μM Cd or 17 μM Ni. Exposure to 0.157 mM CU in two separate experiments using P. involutus 87.017 and two strains of S. variegatus (BL and 159) appeared to stimulate production of oxalic acid irrespective of mycorrhizal status or species.

  • 40.
    Akambih Tajam, Joseph
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för teknik och hållbar utveckling.
    Jonsson, Anders
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för teknik och hållbar utveckling.
    Fröling, Morgan
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för teknik och hållbar utveckling.
    SMALL SCALE IN-SITU BIOREMEDIATIONOF DIESEL CONTAMINATED SOIL –SCREENING LIFE CYCLE ASSESSMENT OF ENVIRONMENTAL PERFORMANCE2010Ingår i: ECO-TECH´10, 22-24 November 2010, Kalmar, Sweden: International Conference on Natural Sciences and Technologies for Waste and Wastewater Treatment, Remediation, Emissions Related to Climate, Environmentaland Economic Effects / [ed] FABIO KACZALA, SANDRINE ARZUR, IDA TJÄDER WILLIAM HOGLAND, 2010, s. 827-835Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    Spillage of diesel oil and other petroleum products is a commonly creating need for siteremediation of contaminated soils. In Sweden the most common remediation action isexcavation of the contaminated soil and off site biological treatment by composting.However, a number of small sites spread out in rural areas end up low on priority lists, andwill not be attended to within foreseeable future if ever. For such areas a low cost, easy toapply remediation techniques would be of interest. Enhanced bioremediation of dieselcontaminants in soil by whey addition has been demonstrated in lab scale. Whey is a byproductfrom cheese production. A first pilot remediation trial on an actual site in Gäddede,County of Jämtland, was started the summer of 2010. Using this site as a case study ascreening life cycle assessment model has been set up. The goal of the study was toinvestigate the environmental performance of the whey method, to benchmark the wheymethod toward the excavation and composting practice and to identify environmental hotspots in the whey treatment life cycle. The study aims at establishing if further work shouldbe put into developing the method, or if the environmental performance is such that the wheymethod should be abandoned. It should be noted that even with a slightly worseenvironmental performance compared to other remediation alternatives whey treatment couldstill be of interest, since the small scale sites in rural areas we talk about here otherwise mostoften would not be attended to.Results from the screening life cycle assessment indicate a rather good environmentalperformance of the whey method, partly depending on impact category considered. For thewhey method, impacts from farming activities in the milk production chain allocated to thewhey give significant contributions. Transportation gives important impacts from both thewhey method and the excavation and off site composting, thus logistics should always beconsidered and optimized. The whey on-site treatment could be an interesting alternative forbioremediation especially at sites that would not otherwise be treated, due to small size orremote location.

  • 41.
    Akbar, Adnan
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för informations- och kommunikationssystem.
    Influencing Factors on Quality of Experience (QoE) in Mobile Computing2014Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Applications that can change their behaviour based on the user’s contextual appearance are called context-aware applications. Applications developed for smart phones, which carry a multitude of different sensors, and actuators have gained a huge penetration within the market. Frequent usage of mobile applications such as home automation, friend finder, car accident notification and tracking etc; have seen an increased growth from the user’s perspective. However, for such applications, it is necessary to have knowledge of the performance and cost parameters, which directly affect the QoE of the application users.  This thesis investigates possible context aware behaviours in real time situations and measures the Quality of Experience (QoE) as well as identifying the Packet Delay Variation (PDV). The background and some state-of-the-art technologies are studied, and based on these studies, three scenarios are designed and implemented and based on their QoE, results and conclusions are presented, with the  results obtained  shown by means of   graphical representations of the QoE and PDV values. 

  • 42. Al Khatib, I.
    et al.
    Maguire, G.Q.
    Ayani, R.
    Forsgren, Daniel
    Wireless LAN Access Point Modeling as a Queuing System2002Ingår i: Proceedings of The Communications and Computer Networks 2002 Conference (CCN 2002), MIT, Cambridge, USA, November 4-6, 2002, 2002, s. 463-468Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    This paper presents a research study of wireless LAN access points for IEEE 802.11b, where we seek to model the access point as a queuing system. The model can be used to compare performance metrics of different wireless LAN access points and to investigate the QoS of specific applications in the presence of a wireless LAN access point. In this paper, we focus on two parameters: the delay introduced by a wireless LAN access point and the average service time required to serve a packet passing through an access point. A major result is an analytic solution for the average service time of a packet in relationship to payload.

  • 43. Al Khatib, I.
    et al.
    Maguire, G.Q.
    Ayani, R.
    Forsgren, Daniel
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för informationsteknologi och medier.
    Wireless LAN Access Points as Queuing Systems: Performance Analysis and Service Time2003Ingår i: Mobile Computing and Communications Review, ISSN 1559-1662, Vol. 7, nr 1, s. 28-30Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Since the approval of the IEEE 802.11b by the IEEE in 1999, the demand for WLAN equipment and networks has been growing quickly. We present a queuing model of wireless LAN (WLAN) access points (APs) for IEEE 802.11b. We use experimentation to obtain the characteristic parameters of our analytic model. The model can be used to compare the performance of different WLAN APs as well as the QoS of different applications in the presence of an AP. We focus on the delay introduced by an AP. The major observations are that the delay to serve a packet going from the WLAN medium to the wired medium (on the uplink) is less than the delay to serve a packet, with identical payload, but travelling from the wired medium to the WLAN medium (on the downlink). A key result is an analytic solution showing that the average service time of a packet is a strictly increasing function of payload.

  • 44. Alarco, J A
    et al.
    Brorsson, G
    Olin, Håkan
    Department of Physics, Chalmers University of Technology/University of Göteborg.
    Olsson, E
    Early stages of growth of YBa2Cu3O7− high Tc superconducting films on (001) Y-ZrO2 substrates1994Ingår i: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 75, s. 3202-3204Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Theearly stages of growth of high quality YBa2Cu3O7− (YBCO) filmsgrown on (001) Y-ZrO2 (YSZ) substrates by pulsed laser depositionhave been studied using a combination of atomic force microscopyand transmission electron microscopy. A one unit cell thick YBCOlayer and relatively large CuO particles formed in the initialstages. Additional YBCO grew on top of the first layerin the form of one or a few unit cellhigh c-axis oriented islands about 30 nm in diameter. Therounded islands subsequently coalesced into faceted domains. Elongated Y2BaCuO5 particlesnucleated after the first layer of YBCO. A highly texturedBaZrO3 layer formed between the YSZ and the YBCO witha cube-on-cube dominant orientation relationship with respect to the YBCOfilm. Journal of Applied Physics is copyrighted by The American Institute of Physics.

  • 45.
    Albani, Giorgia
    et al.
    Dipartimento di Fisica, Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, Milano, Italy; INFN Sezione di Milano-Bicocca, Piazza della Scienza 3, Milano, Italy.
    Perelli Cippo, Enrico
    Istituto di Fisica Del Plasma (IFP-CNR), Via Cozzi 53, Milano, Italy.
    Croci, Gabriele
    Dipartimento di Fisica, Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, Milano, Italy; INFN Sezione di Milano-Bicocca, Piazza della Scienza 3, Milano, Italy.
    Muraro, Andrea
    Istituto di Fisica Del Plasma (IFP-CNR), Via Cozzi 53, Milano, Italy.
    Schooneveld, Erik
    STFC-ISIS Facility, RAL, Didcot, United Kingdom.
    Scherillo, Antonella
    STFC-ISIS Facility, RAL, Didcot, United Kingdom.
    Hall-Wilton, Richard J.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för elektronikkonstruktion. European Spallation Source ERIC, Lund.
    Kanaki, Kalliopi
    European Spallation Source ERIC, Lund.
    Höglund, Carina
    European Spallation Source ERIC, Lund; Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping.
    Hultman, Lars
    Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping.
    Birch, Jens
    Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping.
    Claps, Gerardo
    INFN, Laboratori Nazionali di Frascati, Via Fermi 40, Frascati, Italy.
    Murtas, Fabrizio
    INFN, Laboratori Nazionali di Frascati, Via Fermi 40, Frascati, Italy.
    Rebai, Marica
    Dipartimento di Fisica, Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, Milano, Italy; INFN Sezione di Milano-Bicocca, Piazza della Scienza 3, Milano, Italy.
    Tardocchi, Marco
    Istituto di Fisica Del Plasma (IFP-CNR), Via Cozzi 53, Milano, Italy.
    Gorini, Giuseppe
    Dipartimento di Fisica, Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, Milano, Italy; INFN Sezione di Milano-Bicocca, Piazza della Scienza 3, Milano, Italy; Istituto di Fisica Del Plasma (IFP-CNR), Via Cozzi 53, Milano, Italy.
    Evolution in boron-based GEM detectors for diffraction measurements: From planar to 3D converters2016Ingår i: Measurement science and technology, ISSN 0957-0233, E-ISSN 1361-6501, Vol. 27, nr 11, artikel-id 115902Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The so-called '3He-crisis' has motivated the neutron detector community to undertake an intense R&amp;D programme in order to develop technologies alternative to standard 3He tubes and suitable for neutron detection systems in future spallation sources such as the European spallation source (ESS). Boron-based GEM (gas electron multiplier) detectors are a promising '3He-free' technology for thermal neutron detection in neutron scattering experiments. In this paper the evolution of boron-based GEM detectors from planar to 3D converters with an application in diffraction measurements is presented. The use of 3D converters coupled with GEMs allows for an optimization of the detector performances. Three different detectors were used for diffraction measurements on the INES instrument at the ISIS spallation source. The performances of the GEM-detectors are compared with those of conventional 3He tubes installed on the INES instrument. The conceptual detector with the 3D converter used in this paper reached a count rate per unit area of about 25% relative to the currently installed 3He tube. Its timing resolution is similar and the signal-to-background ratio (S/B) is 2 times lower.

  • 46.
    Albihn, Amalia
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för informationssystem och -teknologi.
    Husveterinären: Responsiv design med WordPress2017Självständigt arbete på grundnivå (högskoleexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Målet med detta projekt har varit att ta fram en responsiv webbplats åt Husveterinären

    AB. Kraven på webbplatsen var bland annat att den skulle skapas i

    WordPress, möjliggöra för kunder att ta del av uppdateringar från veterinärens

    Facebook samt innehålla ett bokningssystem. Projektet genomfördes enligt metoden

    mobile first vilket innebär att man utgår ifrån en liten skärm när man designar

    för att sedan skala upp storleken. Media queries och en flexibel layout

    baserad på relativa enheter har använts för den responsiva designen. För att utvärdera

    webbplatsens användbarhet har användartester genomförts. Resultatet

    är en webbplats som kan användas i enheter med stora såväl som med små skärmar.

    Användartesterna visade på att det var lätt att navigera mellan webbsidorna

    samt att använda både bokningssystemet och kontaktformuläret oavsett skärmstorlek.

    Med WordPress är det dessutom möjligt för veterinären att själv underhålla

    sin webbplats utan att behöva ha kunskaper om att skriva kod.

  • 47.
    Alecrim, Viviane
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Andres, Britta
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Zhang, Renyun
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Hummelgård, Magnus
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Blomquist, Nicklas
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Forsberg, Sven
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Engström, Ann-Christine
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Shimizu, Kenichi
    Umeå University.
    Andersson, Mattias
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Olin, Håkan
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Exfoliation of MoS2 for paper based applications2014Konferensbidrag (Övrigt vetenskapligt)
  • 48.
    Alecrim, Viviane
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Andres, Britta
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Zhang, Renyun
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Hummelgård, Magnus
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Shimizu, Kenichi
    Umeå University.
    Forsberg, Sven
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Andersson, Mattias
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Olin, Håkan
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Exfoliated MoS2 for paper based supercapacitors and photodetectors2014Ingår i: Collection of Extent Abstracts, 2014, s. 437-438Konferensbidrag (Övrigt vetenskapligt)
  • 49.
    Alecrim, Viviane
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Zhang, Renyun
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Hummelgård, Magnus
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Andersson, Henrik
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Andersson, Mattias
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Olin, Hakan
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Photoconductivity of bulk and liquid processed MoS22014Konferensbidrag (Övrigt vetenskapligt)
  • 50.
    Alecrim, Viviane
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Zhang, Renyun
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Hummelgård, Magnus
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Andres, Britta
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Dahlström, Christina
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för kemiteknik.
    Norgren, Magnus
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för kemiteknik.
    Andersson, Mattias
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Olin, Håkan
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för naturvetenskap.
    Exfoliated Layered Materials for Digital Fabrication2015Ingår i: NIP & Digital Fabrication Conference, 2015, Vol. 1, s. 192-194Konferensbidrag (Refereegranskat)
    Abstract [en]

    We introduced an exfoliation method of MoS2 in a 3% solution of sodium dodecyl surfactant at high concentration (i.e. 2 g/L). The bulk MoS2 was thinned by mechanical exfoliation between sand papers and the resulting powder was used to prepare dispersions by liquid exfoliation through probe sonication. The resulting dispersion consisted of very thin MoS2 nanosheets in surfactant solution with average lateral size around 126 nm. This may be interesting for applications in inkjet printed electronics.

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