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Oxide flux
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Ebook "Terrestrial biosphere-atmosphere fluxes" provide the tools to understand and quantitatively analyse fluxes of energy, organic compounds such as terpenes, and trace gases including carbon dioxide, water vapour and methane. It first introduces the fundamental principles affecting the supply and demand for trace gas exchange at the leaf and soil scales: thermodynamics, diffusion, turbulence and physiology.
519p
duongthandue0501
28-02-2024
6
1
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This study aims to evaluate the effect of biochar application on soil nitrous oxide emissions. A pot experiment with broccoli (Brassica juncea) was set up to evaluate the effect of melaleuca biochar on N2O flux under net house conditions.
7p
vimalfoy
08-02-2023
4
1
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Nitric oxide can be measured at multiple flow rates to determine proximal (maximum airway nitric oxide flux; JawNO) and distal inflammation (alveolar nitric oxide concentration; CANO). The main aim was to study the association among symptoms, lung function, proximal (maximum airway nitric oxide flux) and distal (alveolar nitric oxide concentration) airway inflammation in asthmatic children treated and not treated with inhaled glucocorticoids.
7p
vimontana2711
05-04-2021
16
1
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A study was conducted at Crop Research Center of G.B. pant University of Agriculture and Technology, Pantnagar in Tarai region of Uttarakhand, India to quantify nitrous oxide emission from rice fields due to the addition of different organic amendments and inorganic fertilizers. The average nitrous fluxes for rice were 0.57, 1.87, 2.37, 3.52 and 1.27 mg m-2 h -1 from control with crop, farmyard manure (FYM), green manure (GM), straw amendments and sulphur fertilizers, respectively.
8p
kethamoi6
29-06-2020
10
0
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Drought is the most important environmental stress that limits crop yield in a global warming world. Despite the compelling evidence of an important role of oxidized and reduced sulfur-containing compounds during the response of plants to drought stress (e.g. sulfate for stomata closure or glutathione for scavenging of reactive oxygen species), the assimilatory sulfate reduction pathway is almost not investigated at the molecular or at the whole plant level during drought.
15p
vihashirama2711
21-05-2020
20
1
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Effect of filling ratio on heat trasfer performance in multi-heat pipe with graphene oxide nanofluid
This experimental study is performed to investigate heat transfer performance of a multi-heat pipe cooling device in the condition of different filling ratio (40%, 60%, 80% and 100%) under constant heat flux conditions. Here, pure water and graphene oxide (GO) nanofluid are employed as working fluid. Temperature fields and thermal resistance are measured for different filling ratio, heat fluxes and volume concentrations.
6p
angicungduoc1
01-12-2019
30
1
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Physical and mechanical properties of seven ancient clay brick samples of Kathmandu valley consisting of quartz, feldspars, spinel, margarite, muscovite type of mica mineral and hematite were studied using ASTM standards. All the brick samples used in this study have the water absorption, apparent porosity and bulk density in the range of 10-28 percent, 17-33 percent and 1.2-1.8 g/cm3 , respectively, while the compressive strength of all the brick samples is found to be in the range of 5-23 MPa.
18p
nguathienthan1
24-11-2019
25
1
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Metabolomics (or metabonomics) is metabolite profil- ing, measuring the real outcome of the potential changes suggested by genomics and proteomics. Metabolomics investigates regulation and metabolic fluxes in individual cells or cell types. Metabonomics combines the power of high-resolution nuclear magnetic resonance with statistical data analysis of in vivo metabolite patterns. This technique enables rapid screening for xenobiotic toxicity, disease state, drug efficiency, nutritional status and even gene function in the “whole” organism. (Nicholson et al., 2002).
50p
conduongdinhmenh
07-05-2013
57
3
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Traditional analyses of the control and regulation of steady-state concentrations and fluxes assume the activities of the enzymes to be constant. In living cells, a hierar-chical control structure connects metabolic pathways to signal-transduction and gene-expression. Consequently, enzyme activities are not generally constant. This would seem to compromise analyses of control and regulation at the metabolic level.
10p
research12
23-04-2013
44
1
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The currently applied reaction structure in stoichiometric flux balance mod-els for the nonoxidative branch of the pentose phosphate pathway is not in accordance with the established ping-pong kinetic mechanism of the enzymes transketolase (EC 2.2.1.1) and transaldolase (EC 2.2.1.2). Based upon the ping-pong mechanism, the traditional reactions of the nonoxida-tive branch of the pentose phosphate pathway are replaced by metabolite specific, reversible, glycolaldehyde moiety (C2 ) and dihydroxyacetone moi-ety (C3) fragments producing and consuming half-reactions. ...
13p
fptmusic
12-04-2013
36
1
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Competing geophysical/geochemical hypotheses for how Earth’s surface became oxygenated – organic carbon burial, hydrogen escape to space, and changes in the redox state of volcanic gases – are examined and a more biologically-based hypothesis is offered in response. It is argued that compared to the modern oxygenated world, organic carbon burial is of minor importance to the accumulation of oxygen in a mainly anoxic world where aerobic respiration is not globally significant. Thus, for the Paleoproterozoic Great Oxidation Event (GOE) ~ 2.
27p
giamdocamnhac
06-04-2013
61
6
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This work concerns the cause of glycolytic oscillations in yeast. We analyse experimental data as well as models in two distinct cases: the relaxation-like oscillations seen in yeast extracts, and the sinusoidal Hopf oscillations seen in intact yeast cells. In the case of yeast extracts, we use flux-change plots and model analyses to establish that the oscillations are driven by on⁄off switching of phosphofructokinase.
13p
awards
06-04-2013
29
3
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Mitochondrialb-oxidation is a complex pathway involving, in the case of saturated straight chain fatty acids of even carbonnumber, at least 16proteinswhichare organized into two functional subdomains; one associated with the inner face of the inner mitochondrial membrane and the other in the matrix. Overall, the pathway is subject to intramito-chondrial control at multiple sites. However, at least in the liver, carnitine palmitoyl transferase I exerts approximately 80% of control over pathway flux under normal conditions....
8p
dell39
03-04-2013
35
2
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In several archaea of the Euryarchaeota, the glycolytic flux proceeds through a modified version of the Embden–Meyerhof pathway, where the phosphofructokinase and glucokinase enzymes use ADP as the phosphoryl donor. These enzymes are homologous to each other. In the hyperthermo-philic methanogenic archaeon
12p
galaxyss3
07-03-2013
42
2
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Glutathione (GSH) plays a key role in defense against oxidative stress. The availability of GSH is ensured in tissues by systems devoted to its mainte-nance in the reduced state and by the flux of GSH and cysteine between sites of biosynthesis and sites of utilization. Little is known about the effect of oxidative stress on the distribution of low-molecular-mass thiols and their exchange rate between tissues.
13p
vinaphone15
25-02-2013
45
3
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The in vitro Entamoeba histolytica pyruvate:ferredoxin oxidoreductase (EhPFOR) kinetic properties and the effect of oxidative stress on glycolytic pathway enzymes and fluxes in live trophozoites were evaluated.EhPFOR showed a strong preference for pyruvate as substrate over other oxoacids.
14p
viettel02
19-02-2013
34
1
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NADPH-dependent dual-flavin enzymes provide electrons in many redox reactions, although the mechanism responsible for regulating their electron flux remains unclear. We recently proposed a four-state kinetic model that links the electron flux through a dual-flavin enzyme to its rates of interfla
15p
cosis54
09-12-2012
50
1
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Phototrophic green bacteria, phototrophic purple bacteria, and heliobacteria are three groups of bacteria that use anoxygenic photosynthesis. Anoxygenic phototrophs have photosynthetic pigments called bacteriochlorophylls. Bacteriochlorophyll a and b have maxima wavelength absorption at 775 nm and 790 nm, respectively in ether. Unlike oxygenic phototrophs, anoxygenic photosynthesis only functions using a single photosystem. This restricts them to cyclic electron flow only, and they are therefore unable to produce O2 from the oxidization of H2O.
358p
conquynho32
15-09-2012
82
19
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Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Dynamic rerouting of the carbohydrate flux is key to counteracting oxidative stress...
18p
toshiba3
07-09-2011
43
2
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