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To investigate the influence of sulfonated polysulfone (sPSU) in membrane–electrode assemblies (MEAs), sPSU-based gas diffusion electrodes (GDEs) and sPSU membranes were studied both as complete MEAs and as separate components in assembled MEAs at 60–120°C. The complete sPSU MEAs showed mass-transport limitations, irrespective of ion exchange capacity, compared to Nafion MEAs. Cyclic voltammetry a
A general framework for the formulation and analysis of an overall decision support index is discussed. It is indicated that such an index allow evaluation of the combined effects of both design and operation (i) during the planning phase of new WWTPs, as well as (ii) for the evaluation of new operational strategies versus traditional expansions of plants already in operation. Attention is drawn t
Gas turbine systems are predominantly designed to be fuelled with gaseous fuels within a limited Wobbe index range (typically HHV=45-55 MJ/Nm3 or 1200-1480 Btu/scf). When low calorific fuel gases are fired, the engine will be forced to operate outside its design envelope. The added mass flow will typically raise the cycle pressure ratio and in two-shaft designs also raise the gas generator shaft s
The 3 GeV electron storage ring of the MAX IV laboratory is the first storage-ring-based synchrotron radiation facility with the inner surface of almost all the vacuum chambers along its circumference coated with non-evaporable getter (NEG) thin film. The coating provides a low dynamic outgassing rate and pumping of active gases. As the NEG coating was applied on an unprecedented scale, there were
Forskare Kontaktinformation E-post: lina_maria [dot] ellegard [at] nek [dot] lu [dot] se Telefon: +46 46 222 86 80 Mobil: +46 73 697 63 95Organisation Nationalekonomiska institutionen Besöksadress: Lund Rumsnummer: 4090 Hämtställe: 10 WebbplatsLina Maria Ellegårds profil i Lunds universitets forskningsportal Publikationer Visar av publikationer. Sorterade efter år och sen titel. Filtrera efter typ
https://www.ehl.lu.se/lina-maria-ellegard - 2026-09-12
Background and aim The paper is based on a study of hunting tourism enterprising in Sweden. The paper demonstrates how game meat is ascribed different, sometimes conflicting values in the moral economy of commercial hunting and identifies an emerging process of servitization of the game meat. Recreational hunting in Sweden can be described as embedded in two different but overlapping cultural and
In recent years we have seen a development within the archival tradition identified by some as a paradigm shift. The signifiers behind this shift are mirrored in the records continuum model - a model that then also reflects a wider socio-political understanding of the development of archival thinking. Hence this thesis intend to describe and analyse the current shift in archival description in Swe
This paper presents a comprehensive analysis of the operation management of a multi-node community microgrid (MG), emphasizing power flow constraints and the integration of photovoltaic (PV) and battery systems. This study formulates MG operation management as a multi-objective optimal power flow problem, aiming to minimize costs (maximize profits) and emissions simultaneously. The multi-objective
The Convention on Biological Diversity (CBD) was designed in accordance with the framework protocol approach, which comprises treaty bodies such as Conferences of the Parties (COP) and compliance mechanisms and sets out broad standards to be made more precise through the making of protocols. The CBD’s third objective, access and equitable sharing of the benefits arising from the utilization of genThe Convention on Biological Diversity (CBD) was designed in accordance with the framework protocol approach, which comprises treaty bodies such as Conferences of the Parties (COP) and compliance mechanisms and sets out broad standards to be made more precise through the making of protocols. The CBD’s third objective, access and equitable sharing of the benefits arising from the utilization of gen
A new control strategy has been introduced for operating anaerobic digestion processes efficiently at high load. The control system includes a cascade controller embedded into a rule-based supervisory system based on extremum-seeking control. Three process parameters, considered to be the most realistic variables for monitoring of the bioprocess, were selected (pH, biogas production rate, and the
In the Gambia, Osusu has helped women to be resilient to various types of precarity for a long time. Though the country has recently recognized the importance of financial inclusion by adopting a National Financial Inclusion Strategy (NFIS), the informal practice of Osusu continues to exist and evolve. Through 20 semi-structured interviews with women who are members of Kafoos that operate Osusu, t
There is growing global interest in using renewable alcohols to reduce the greenhouse gases and the reliance on conventional fossil fuels. Recent studies show that methanol combined with partially premixed combustion provide clear performance and emission benefits compared to conventional diesel diffusion combustion. Nonetheless, high unburned hydrocarbon (HC) and carbon monoxide (CO) emissions ca
Kisel är ett vanligt förekommande grundämne som gärna bildar en oxid, nämligen kiseldioxid. Kiseldioxid träffar man i hög utsträckning på i det dagliga livet. Det är nämligen huvudbeståndsdelen i sand, glasvaror, kvarts, många keramiska material men också i den färgskiftande ädelstenen opal. Det finns också flera grupper av porösa kiseldioxidmaterial, till exempel så kallade zeoliter som har myckeThe formation process of porous silica materials is an intricate process, involving a number of components that interact to form a highly organized material. Both zeolites and mesoporous silica materials typically require the presence of organic structure director agents (SDAs) around which the silica network polymerizes. For zeolites the SDAs are molecular and for mesoporous silica the SDAs assem
Meddelanden från HT-biblioteken | mars 2026 Meddelanden från HT-biblioteken | mars 2026 Publicerad den 15 mars 2026 Foto: Anja Hoppe. I detta nyhetsbrev vill vi påminna om att skicka in boktips! Månadens e-resurs är svenska.se och vi informerar som vanligt även om öppna workshoppar för forskare och studenter, samt böckerna vi har köpt in under februari. Innehållsförteckning Delbanco Påminnelse bok
https://www.htbibl.lu.se/article/meddelanden-fraan-ht-biblioteken-mars-2026/ - 2026-09-12
This thesis presents methods to derive and model the performance characteristics of interior permanent magnet machines – a machine type which is commonly used for propulsion of electrical vehicles. The thesis divides the performance characteristics into three subcategories: The electromagnetic properties, the loss profile and the thermal behaviour of the machines. One separate characterisation metThis thesis presents methods to derive and model the performance characteristics of interior permanent magnet machines – a machine type which is commonly used for propulsion of electrical vehicles. The thesis divides the performance characteristics into three subcategories: The electromagnetic properties, the loss profile and the thermal behaviour of the machines. One separate characterisation met
