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Din sökning på "Michael Barnard, Hydrogen generation, energy storage" gav 5370 sökträffar

Filter function of graphene oxide : Trapping perfluorinated molecules

We need clean drinking water, but current water purification methods are not always sufficient. This study examines the binding and binding mechanisms when graphene oxide is used as a filter material for removing perfluorinated substances and trihalomethanes. We use density functional theory calculations to examine the binding of the harmful molecules on graphene oxide. Our results indicate that t

Effects of whole grain products on appetite and voluntary energy intake: a randomised cross-over study in healthy subjects focusing on colonic fermentation aspects

BACKGROUND: Obesity has been increasing in both developed and developing countries. One of the prevention strategies is controlling energy intake. The objective of this research was to examine the effects of four designed whole grain products, i.e. WG 100, WG 50/50, WG 50/50 + RS and KWWB, on colonic fermentation and appetite variables in healthy subjects. METHODS: The determination of dietary fib

LES of hydrogen enriched methane/air combustion in the SGT-800 burner at real engine conditions

DLE (Dry Low Emission) techniques are widely used today to reduce the harmful NOx emissions associated with high combustion temperatures. In many DLE systems the fuel and air are premixed which effectively keep the flame temperature as low as possible, ideally equal to the turbine inlet temperature. By using premixing stability issues such as flash back and combustion driven dynamics may occur. Op

Thermodynamic and kinetic characterization of host-guest association between bolaform surfactants and alpha- and beta-cyclodextrins

The thermodynamics and kinetics of formation of host-guest complexes between a series of bolaform surfactants of type C(n)Me(6)(2+)2Br(-) (n = 8, 10, and 12) and alpha-cyclodextrin and beta-cyclodextrin were studied with the aid of isothermal titration calorimetry (ITC) at 298.15 and 308.20 K. The association constant, the enthalpy, and the entropy of formation were determined. The obtained thermo

Application of kinetic models in dark fermentative hydrogen production–A critical review

Kinetic modeling could be viewed as an important step in developing a bioprocess, since models can be used in process control, reducing costs and optimizing processes. In the present study, the application of kinetic models in dark fermentative hydrogen production has been investigated. A wide variety of kinetic models are addressed and compared regarding their accuracy to fit the data. This liter

Concept

MINICOR Reduced net emissions of carbon dioxide (CO2) are necessary to achieve the IPCC goals of limiting global warming and ensuring a sustainable future for our society. The natural balance of CO2 via photosynthesis is insufficient to compensate for the anthropogenic emissions, and active measures are thus necessary. MINICOR aims to develop a versatile process for managing and valorizing CO2 and

https://www.combustionphysics.lu.se/minicor/concept - 2026-06-15

Quality of harvested rainwater in Gansu and disinfection alternatives

An economical and optimal construction of rainwater storage cistern in the Loess Plateau of Gansu is introduced. The collection alternatives of rainwater showed a dramatic difference on cistern water quality. Roof-yard catchment systems can harvest drinking water that generally meets the international guidelines. Among the tested disinfectants - chlorine dioxide, potassium permanganate, chloramine

Onset of cellular instability in adiabatic H-2/O-2/N-2 premixed flames anchored to a flat-flame heat-flux burner

The onset of cellular instability in adiabatic H-2/O-2/N-2 premixed flames anchored to a heat-flux burner is investigated numerically. Both hydrodynamic instability and diffusional-thermal instability are shown to play an important role in the onset of cellular flames. The burner can effectively suppress cellular instability when the flames are close to the burner, otherwise the burner can suppres

Surfaces and interfaces of low dimensional III-V semiconductor devices

The demand for fast and energy efficient (opto-)electronic applications needs high mobility semiconductor materials, such as InAs with a very high electron mobility and GaSb with a very high hole mobility. Beyond the material itself, also an innovative device geometry is needed, for example, the gate-all-around geometry that provides higher efficiency and electrostatic control for computational un

Kaonic atoms measurement at DA Φ NE : SIDDHARTA and SIDDHARTA-2

Light kaonic atoms studies provide the unique opportunity to perform experiments equivalent to scattering at threshold, being their atomic binding energies in the keV range. High precision atomic X-rays spectroscopy ensures that the energy shift and broadening of the lowest-lying states of the kaonic atoms, induced by the strong interaction between the kaon and nucleus, can be detected. Kaonic hyd

Installation och styrning av ackumulatortank

When working with district heating production, you often encounter problems with unbalanced energy consumption from the consumers during the 24 hours of a day. High energy consumption when it is morning and evening whiles it is low energy consumption on midday and during the night. This leads to higher wear and tear and an uneven production rate at the boilers. To solve this problem you can instal

Modeling of an anode supported Solid Oxide Fuel Cell focusing on Thermal Stresses

A mechanical failure of a single component is sufficient to cause a solid oxide fuel cell (SOFC) breakdown. As an unfavorable issue for interfering the stable operation of SOFCs, thermal stress stemming from temperature gradient and mechanical mismatch can result in crack damage. Therefore, it is strongly significant to clarify the relationship of mechanical properties of the cell materials with dA mechanical failure of a single component is sufficient to cause a solid oxide fuel cell (SOFC) breakdown. As an unfavorable issue for interfering the stable operation of SOFCs, thermal stress stemming from temperature gradient and mechanical mismatch can result in crack damage. Therefore, it is strongly significant to clarify the relationship of mechanical properties of the cell materials with d

Sensing Mechanism for Biothiols Chemosensor DCO: Roles of Excited-State Hydrogen-Bonding and Intramolecular Charge Transfer

The biothiols sensing mechanism of (E)-7-(diethylamino)-3-(2-nitrovinyl)-2H-chromen-2-one (DCO) has been investigated using the density functional theory (DFT) and time-dependent DFT methods. The theoretical results indicate that the excited-state intermolecular hydrogen bonding (H-B) plays an important role for the biothiols sensing mechanism of the fluorescence sensor DCO. Multiple H-B interacti

Physiology of Caldicellulosiruptor saccharolyticus: a hydrogen cell factory

Popular Abstract in Swedish Biovätgas är en mycket energirik och förnyelsebar energikälla för bilar och elproduktion som genererar mycket lite av växthusgasen koldioxid. Vätgasen kan framställas av billiga råvaror såsom hushållsavfall, industriellt avfall och av lignocellulosa. Lignocellulossa är en komplex polymer som finns bland annat i olika träslag och gräs. Detta leder till att råvaropriset mA high substrate conversion efficiency is a prerequisite for an economically feasible biohydrogen production. Caldicellulosiruptor saccharolyticus is a strictly anaerobic extreme thermophilic bacterium that is able to convert the theoretical maximum of 4 mol/mol glucose to H2. It can grow and produce H2 on a broad spectrum of sugars ranging from monomers (hexoses and pentoses) to more complex suga