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Previous studies on the extreme thermophile Caldicellulosiruptor saccharolyticus revealed that the organism produces high yields of hydrogen on glucose and xylose, the major components of lignocellulosic hydrolysates. Preliminary experiments on mixed sugar substrates, however, indicated that xylose was preferred over glucose. The sugar preference of some other extreme thermophiles, including Caldi

Three amperometric enzyme electrodes have been constructed by adsorbing anionic royal palm tree peroxidase (RPTP), anionic sweet potato peroxidase (SPP), or cationic horseradish peroxidase (HRP-C) on spectroscopic graphite electrodes. The resulting H2O2-sensitive biosensors were characterized both in a flow injection system and in batch mode to evaluate their main bioelectrochemical parameters, su

The pinch-off dynamics during hydrogen bubble formation was experimentally investigated in a cross-junction microchannel. A binarization interface recognizing and key frame tracking method was established. By analyzing the breakup dynamics through spatial and time domains, the effects of interfacial tension and viscosity on hydrogen bubble pinch-off were revealed. A transitional stage between a li

Vår forskning fokuserar på fyra centrala sinnen – syn, lukt, smak och magnetoreception – med särskild inriktning på ryggradslösa djur. Dessutom har vi en grupp som studerar andra fysiologiska aspekter av djurens funktion. Djur använder sina sinnesorgan för att upptäcka och reagera på viktiga signaler från sin omgivning. Synintryck, dofter eller ljud från en potentiell partner, varningssignaler om

https://www.biologi.lu.se/forskning/sinnesbiologi - 2026-06-09

A new hydrogen absorbing material has been discovered, ScNiAl, which can store 1.5 wt.% hydrogen reversibly. In this compound, hydrogen absorption is a two-step process; solid solution of hydrogen at temperatures below 180A degrees C and decomposition into ScH2 and NiAl at higher temperatures. Detailed analysis of the hydrogen absorption/desorption has been performed using in situ synchrotron radi

Det finns en stor potential för ett ökat utnyttjande av biomassa för energiändamål i Sverige. En ökad användning av biomassa skulle kunna bidra till att minska utsläppen av koldioxid från förbränning av fossila bränslen, minska beroendet av importerade fossila energibärare samt påverka den regionala och lokala miljösituationen såväl positivt som negativt. Föreliggande studie behandlar framför alltThere is a large potential for increasing the use of biomass for energy purposes in Sweden. Increasing the use of biomass can reduce emissions of carbon dioxide (CO2) from fossil-fuel combustion and dependence on imported fossil fuels. Furthermore, increased biomass use will affect emissions of other air pollutants than carbon dioxide as well as environmental impacts from land use. The study deals

Metal oxide nanoparticles are widely used in catalysis, photovoltaics, and gas sensing, where surface structure and oxidation state strongly influence performance. This work investigates how carrier gas composition, combined with in-flight heating, can be used to control the surface properties of metal oxide nanoparticles generated via the gas-phase method, spark ablation. Sn, Zn, and Al nanoparti

Popular Abstract in English There is a natural tendency to take advantage of the most convenient energy source available. In this usage, convenient may mean most abundant, easiest to harvest or simplest to handle. Convenient will also correspond to cheapest in many instances. However, some consider it a responsibility to think of the long term costs of the energy we use. No form of energy is free The matured laser-diagnostic techniques of planar laser-induced fluorescence (PLIF) and particle image velocimetry (PIV) were applied to a prototype gas turbine burner operating on various fuels. The work was performed to provide verification of computational fluid dynamic (CFD) models of the combustion of atypical fuels in a gas turbine combustor. The burner was operated using methane and three s

Both numerical simulations and experimental measurements of small scale spontaneous ignition with different biomass fuels have been performed. In the experiments, temperature history was monitored at five different locations inside the fuel bed. The measured temperature history was used for validation of comprehensive threedimensional computer simulations which were carried out using a parallel fi

Lignin is one of the most naturally occurring biopolymers on Earth and exists in a relatively large portion of the residual stream of the pulp and paper industry. Technical lignin is water-soluble, nontoxic, and rich in quinone-type groups; therefore, it could be a potential redox species for next-generation aqueous redox flow batteries (RFBs). Despite having attractive features, lignin does not s

Division of Fire Safety Engineering The research at the Division of Fire Safety Engineering has during the years encompassed the description of the evolution of a fire, human behaviour in the event of fire, extinguishing techniques and extinguishing agents, industrial fire protection systems, design related to fire technology, and community emergency services. Today the research is focused on the

https://www.buildtech.lth.se/fire-safety-engineering/research - 2026-06-09

Abstract Abstract Key words: biopolymers, polylactic acid, PLA, Mater-bi, renewable packaging, sustainable packaging. This study investigates the possibility of making Tetra Pak non-aseptic packaging more sustainable by replacing the currently used fossil-based low-density polyethylene (LDPE) laminate, with a renewable starch-based polymer laminate. Two starch-based materials are studied: polylact

https://www.lumes.lu.se/sites/lumes.lu.se/files/dean_carrie_abstract.pdf - 2026-06-10

Carbon dioxide could replace nitrogen gas as stripping gas for the production of H2 by the extreme thermophile, Caldicellulosiruptor saccharolyticus, provided that the pH is kept below 7.0. Above this pH, ≥77 mM sodium bicarbonate will be introduced as an extra salt burden to the culture. High concentrations of sugars and salts contribute each to the inhibition of growth and H2 production, which i

Caldicellulosiruptor saccharolyticus is an extreme thermophilic bacterium recognized for its saccharolytic ability and superior ability to produce high yields of hydrogen. However,most studies have been made using yeast extract (YE) as a rich but expensive nutrient source. For the first time, we show that C. saccharolyticus is able to grow on defined minimal media, including essential vitamins, pr