DiffŽrents procŽdŽs permettant la production embarquŽe d'hydrogne pour vŽhicules Žlectriques ˆ piles ˆ combustible sont passŽs en revue. Les combustibles primaires suivants sont considŽrŽs : ammoniac, mŽthanol, Žthanol et hydrocarbures. Le craquage catalytique de l'ammoniac permet l'obtention d'un mŽlange ˆ 75 % d'hydrogne, exempt de CO2 et convenant donc sans purification ultŽrieure pour l'a...

effect of different planting ratios of oat (avena sativa l.) and vetch (vicia sativa l.) was assessed on quality and quantity of forage and silage in an intercropping system as completely randomized block design (rcbd) with four replications. the treatments were different planting ratios of oat and vetch including 0:100, 20:80, 40:60, 50:50, 60:40, 80:20 and 100:0 (oat-vetch) formed as replacem...

The main challenge in Wastewater Treatment Plants (WWTP) by activated sludge process is the reduction of the energy consumption that varies according to the pollutant load of influent. However, this energy is fundamentally used for aerators in a biological process. The modeling of energy consumption according to the decision parameters deemed necessary for good control of the active sludge ...

rumen is a persistent and specific ecosystem consists of bacteria, protozoa and fungus where feed fermentation takes place in it. produced hydrogen in rumen can be used in the synthesis of the volatile fatty acids and the microbial protein and its excess would be eliminated through the production of methane by methanogenesis. nutritionists have tried to find ways to decrease loss and energy and...

Rumen is a persistent and specific ecosystem consists of bacteria, protozoa and fungus where feed fermentation takes place in it. Produced Hydrogen in rumen can be used in the synthesis of the volatile fatty acids and the microbial protein and its excess would be eliminated through the production of Methane by methanogenesis. Nutritionists have tried to find ways to decrease loss and energy and...

This current study reports preparation of Nickel-Gadolinium doped Ceria (Ni-GDC) composite via controlled unidirectional freeze casting of aqueous-based GDC slurry completed with nickel infiltrated into the porous GDC samples. Gadolinium doped ceria powder prepared by gel-combustion synthesis method. The oxide powder was confirmed to be the fluorite-structured of Ce0.8Gd0.2O1.9 solid solution b...

background & aim:dorema   ammoniacum d. don. (ammoniac plant) belongs to   apiaceae family and dorema genus. it is one of the most important   endemic medicinal plants in its family which grows in the arid and semi-arid   areas in the regions of iran and some of the asian countries such as   turkmenistan, afghanistan, pakistan and india. this study was carried out   with aim of the extraction a...

background: helicobacter pylori is a common cause of chronic infection in human beings. the infection has universal prevalence and contracts all age groups. probably, these bacteria are the cause of the most common chronic bacterial infection in man and have infected approximately half of the world population. the urease of these bacteria degrades the urea in stomach’s mucosa to ammoniac which ...

blind, controlled study of glycerol phenylbutyrate in hepatic encephalopathy. Comment Hepatic encephalopathy (HE) is a serious neuro-psychiatric complication of both acute and chronic liver disease. Historically, the role of ammonia accumulation has dominated explanations of the patho-genesis of HE. However, evidence has emerged for a role of other concurrent factors such as inflammation , hypo...