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Diesel engines are one of the most important power generating units these days. Increasing greenhouse gas emissions level and the need for energy security has prompted increasing research into alternative fuels for diesel engines. Biodiesel is the most popular amongst the alternatives for diesel fuel as it is biodegradable, renewable and can be produced domestically from vegetable oils. In recent

Professor Kontaktinformation E-post: anders [dot] irback [at] mgeo [dot] lu [dot] seOrganisation Miljö- och geovetenskapliga institutionen (MGeo) Hämtställe: 16 WebbplatsAnders Irbäcks profil i Lunds universitets forskningsportalAndra roller Biträdande föreståndare Centrum för miljö- och klimatvetenskap (CEC) Chef Centrum för miljö- och klimatvetenskap (CEC) Biträdande prefekt Centrum för miljö- o

https://www.cec.lu.se/sv/anders-irback - 2026-06-06

The simulated fuel cell has a porous electrode layer, gas flow duct and solid current collector. In terms of friction factor and Nusselt number, the characteristics of gas flow in the duct and heat transfer at heated catalyst surface were investigated by a computational calculation method. The effects of fuel cell current density, permeability of porous diffusion layers on the generation of heat,

I takt med att hållbarhet blir viktigare söker många företag inom jordbrukssektorn lösningar för att fasa ut fossila drivmedel. Utmaningen blir ännu mer komplex när ersättningen ska vara kompatibel med en existerande fordonsflotta, utan investering i nya fordon. Denna studie jämförde fyra kommersiellt tillgängliga och förnybara drivmedel med referensbränslet diesel. De undersökta drivmedlen är HVAs sustainability becomes more important in today's society, many companies in the agricultural sector are looking for new alternatives to fossil fuels. The challenge becomes even more complex when the replacement must be compatible with an existing vehicle fleet, without requiring new investments in vehicles. This report compares four commercially available and renewable fuels, using convent

EuCARD2 is an Integrating Activity Project for coordinated Research and Development on Particle Accelerators, co-funded by the European Commission under the FP7 Capacities Programme. Within the network EnEfficient we address topics around energy efficiency of research accelerators. The ambitious scientific research goals of modern accelerator facilities lead to high requirements in beam power and

Microsoft Word - NANOSCIENCE COLLOQUIUM2015_Lauhon.docx NANOSCIENCE COLLOQUIUM Thursday May 28th 2015 at 15:15, K-space, Fysicum Novel attributes of non-planar heterojunctions in low-dimensional materials Prof. Lincoln J. Lauhon Department of Materials Science and Engineering, Northwestern University, Evanston, IL Precise 1-D and 2-D nanomaterials and growth methods enable the creation of low dime

https://www.nano.lu.se/sites/nano.lu.se/files/nanoscience_colloquium2015_lauhon.pdf - 2026-06-07

Division of Building Services The Division of Building Services research area are technical installations related to energy use, resource efficiency, indoor environment, building occupants and energy systems. Sometimes technical installations in applications other than buildings can also be included. The overall purpose is to create a sustainable society. The Division’s research has focus on analy

https://www.buildtech.lth.se/building-services/research - 2026-06-05

In this paper we present new optimization formulations for maximizing the network lifetime in wireless mesh networks performing data aggregation and dissemination for machine-to- machine communication in the Internet of Things. We focus on heterogeneous networks in which multiple applications co-exist and nodes may take on different roles for different applications. Moreover, we address network reIn this paper we present new optimization formulations for maximizing the network lifetime in wireless mesh networks performing data aggregation and dissemination for machine-to-machine communication in the Internet of Things. We focus on heterogeneous networks in which multiple applications co-exist and nodes may take on different roles for different applications. Moreover, we address network rec

Mineralkvävegödsel är en av förutsättningarna för de höga skördenivåer som uppnåtts i det industrialiserade, moderna jordbruket. I Sverige finns idag ingen inhemsk produktion av mineralkvävegödsel, utan hela efterfrågan tillgodoses med import från utlandet. Produktionen är idag baserad på fossila resurser, vilka används både som råvara för produktionen och som energi för att driva processerna. Vi Mineral nitrogen fertilizer is one of the main reasons for the high yields in modern, industrial agriculture. There is currently no production of mineral nitrogen fertilizer in Sweden – the entire demand is met by imports from abroad. Global production is at present based on fossil resources, which are used both as raw materials for the production and as energy to fuel the process. We are thus dep

Lipoyl synthase (LipA) catalyses the final step of the biosynthesis of the lipoyl cofactor by insertion of two sulfur atoms at the C6 and C8 atoms of the protein-bound octanoyl substrate. In this reaction, two [4Fe4S] clusters and two molecules of S-adenosyl-l-methionine are used. One of the two FeS clusters is responsible for the generation of a powerful oxidant, the 5′-deoxyadenosyl radical (5′-

I dagens samhälle finns det en stor drivkraft att verka för mer hållbara alternativ till de fossila material som varit allmänt förekommande i flera områden av bland annat energiproduktion. Den begränsade mängden kombinerat med de klimatförändrande effekterna av växthusgasutsläpp skapar inte bara en efterfrågan utan gör det ytterst nödvändigt att hitta nya vägar för samhällsutveckling. En sektor soAs concerns grow ever larger about the negative effects of CO2 emissions, the use of hydrogen gas as an alternative to fossil fuels is becoming a more attractive objective. This however, requires practical ways of storing and transporting a highly flammable gas and is generally not compatible with much of the existing infrastructure. One proposed solution to this problem is implementation of liqui