Results 31 to 40 of about 672,871 (380)

Ammonia toxicity to the brain [PDF]

open access: yesJournal of Inherited Metabolic Disease, 2012
AbstractHyperammonemia can be caused by various acquired or inherited disorders such as urea cycle defects. The brain is much more susceptible to the deleterious effects of ammonium in childhood than in adulthood. Hyperammonemia provokes irreversible damage to the developing central nervous system: cortical atrophy, ventricular enlargement and ...
Braissant Olivier   +2 more
openaire   +6 more sources

Influence of Structural Parameters of Tesla Valve Flow Field on Performance of Fuel Cells

open access: yesEnergies
The optimization of flow channel structures significantly impacts the performance enhancement of proton exchange membrane fuel cells (PEMFCs). In this paper, the influences of the loop radius, inclination angle, and presence of the island in the Tesla ...
Hui Guo   +6 more
doaj   +1 more source

Effects of microbial inoculants and amino acid production by-product on fermentation and chemical composition of sugarcane silages

open access: yesRevista Brasileira de Zootecnia, 2012
The objective of this study was to evaluate the chemical composition, fermentation patterns and aerobic stability of sugarcane silages with addition of amino acid production (monosodium glutamate) by-product (APB) and microbial inoculants.
Paulo Henrique Mazza Rodrigues   +5 more
doaj   +1 more source

Spatial Variations of Jovian Tropospheric Ammonia via Ground-Based Imaging [PDF]

open access: yesarXiv, 2023
Current understanding of the ammonia distribution in Jupiter's atmosphere is provided by observations from major ground-based facilities and spacecraft, and analyzed with sophisticated retrieval models that recover high fidelity information, but are limited in spatial and temporal coverage.
arxiv  

Nitrogenase: A nucleotide-dependent molecular switch [PDF]

open access: yes, 1994
In the simplest terms, the biological nitrogen cycle is the reduction of atmospheric dinitrogen (N2) to ammonia with the subsequent reoxidation ammonia to dinitrogen (1).
Howard, James B., Rees, Douglas C.
core   +1 more source

Efeito dos níveis de fibra em detergente neutro oriunda da forragem sobre a eficiência microbiana e os parâmetros digestivos em cabras leiteiras Effect of levels of neutral detergent fiber derived from forage on microbial efficiency and digestive parameters in dairy goats

open access: yesRevista Brasileira de Zootecnia, 2010
Objetivou-se com este trabalho avaliar o efeito de dietas com diferentes concentrações de fibra em detergente neutro oriunda da forragem (FDNf) sobre os parâmetros ruminais (pH e amônia) em cabras leiteiras.
Renata Helena Branco   +5 more
doaj   +1 more source

Carbon dioxide electrochemical reduction by copper nanoparticles/ionic liquid-based catalytic inks

open access: yesFrontiers in Environmental Chemistry
The development of copper nanoparticle (CuNP)-based catalysts for the electrochemical reduction of carbon dioxide (ECO2-R) offers a promising approach to enhance its transformation into other industrially significant compounds.
Valeria Gazzano   +13 more
doaj   +1 more source

Cross-sectional survey on environmental pollution surrounding poultry production cluster area

open access: yesJournal of the Indonesian Tropical Animal Agriculture, 2019
This study was carried out to determine the environmental pollution surrounding poultry production cluster (PPC). A cross-sectional survey on environmental pollution surrounding PPC was conducted in the districts of Subang and Ciamis, West Java Province,
E. Martindah, N. Ilham
doaj   +1 more source

Detection of Widespread Hot Ammonia in the Galactic Center [PDF]

open access: yes, 2013
We present the detection of metastable inversion lines of ammonia from energy levels high above the ground state. We detect these lines in both emission and absorption toward fifteen of seventeen positions in the central 300 parsecs of the Galaxy. In total, we observe seven metastable transitions of ammonia: (8,8), (9,9), (10,10), (11,11), (12,12), (13,
arxiv   +1 more source

Review of Concentrated Solar Power Technology Applications in Photocatalytic Water Purification and Energy Conversion: Overview, Challenges and Future Directions

open access: yesEnergies
Photocatalysis, a promising semiconductor-based technology activated by free and eternal solar energy, has great potential for addressing environmental remediation and energy conversion challenges.
Cheng Zhang, Na Li, Guangqi An
doaj   +1 more source

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