Results 41 to 50 of about 202,861 (363)
Venus' Mass Spectra Show Signs of Disequilibria in the Middle Clouds [PDF]
, 2020 We present a re-examination of mass spectral data obtained from the Pioneer Venus Large Probe Neutral Mass Spectrometer. Our interpretations of differing trace chemical species are suggestive of redox disequilibria in Venus' middle clouds. Assignments to the data (at 51.3 km) include phosphine, hydrogen sulfide, nitrous acid, nitric acid, carbon ...
arxiv +1 more source
Possible contribution of olefins and heteroatoms to the Unidentified Infrared Bands [PDF]
Astron.Astrophys.402:L13-L16,2003, 2003 The current assignments of the 11.3 feature are shown to be incompatible with observations. An unbiased survey of correlation charts suggests that the olefinic group R2=CH2 is a good alternative candidate. For the 12.7 feature, the best fits are provided by nitrites, R-O-N=O, and amines, R-N=H2.
arxiv +1 more source
Nitrite in organ protection [PDF]
British Journal of Pharmacology, 2013 In the last decade, the nitrate‐nitrite‐nitric oxide pathway has emerged to therapeutical importance. Modulation of endogenous nitrate and nitrite levels with the subsequent S‐nitros(yl)ation of the downstream signalling cascade open the way for novel cytoprotective strategies.
Rassaf T, Ferdinandy, Péter, Schulz R
openaire +4 more sources
Ciência Rural, 2006 Este trabalho visou a determinar o efeito tóxico do nitrito sobre larvas do peixe-rei marinho Odontesthes argentinensis através de testes agudos com 96h de duração.
Luís André Sampaio +2 more
doaj +1 more source
Conversion of nitrite of nitrate by nitrite-resistant yeasts.
Agricultural and Biological Chemistry, 1988 Candida species YK 11 and YK 92 and Geotrichum candidum YK 57, which were isolated as nitrite-resistants, converted nitrite in the culture medium to nitrate stoichiometrically during growth. The nitrite-oxidizing reaction was confirmed under aerobic conditions in the intact cell system with 15mM nitrite, 150mM glucose, and 100mM Tris-HCl buffer (pH 7.0)
Kenji Sakai +6 more
openaire +3 more sources
Nitrate and Nitrite in Health and Disease
Aging and Disease, 2018 The source of dietary nitrate (NO3) is mainly green, leafy vegetables, partially absorbed into blood through intestinal mucosa. The recycled nitrate is reabsorbed and concentrated by the salivary glands and then secreted into saliva.
Linsha Ma +3 more
semanticscholar +1 more source
ACS Applied Materials and Interfaces, 2018 Excessive uptake of nitrite has been proven to be detrimental to the ecological system and human health. Hence, there is a rising requirement for constructing effective electrochemical sensors to precisely monitor the level of nitrite. In this work, NiFe-
Yue Ma +8 more
semanticscholar +1 more source
Nitrate Reduction to Nitrite, a Possible Source of Nitrite for Growth of Nitrite-Oxidizing Bacteria [PDF]
Applied and Environmental Microbiology, 1977 Growth yields and other parameters characterizing the kinetics of growth of nitrite-oxidizing bacteria are presented. These parameters were measured during laboratory enrichments of soil samples with added nitrite. They were then used to reanalyze data for nitrite oxidizer growth in a previously reported field study (M. G. Volz, L.
openaire +3 more sources
Major role of nitrite-oxidizing bacteria in dark ocean carbon fixation
Science, 2017 Dissolved inorganic carbon fixers revealed Most of the ocean is dark. Yet it is in this darkness, away from photosynthesizing sunlight, that most planetary carbon cycling occurs. Pachiadaki et al.
M. Pachiadaki +13 more
semanticscholar +1 more source