atmospheric oxygen
Quantitative modeling of the rise in atmospheric oxygen
... simplified atmospheric chemistry (parameterized from complex photochemical models described in Chapter 4) and evolving redox fluxes in the Earth ...associated oxygen production, reducing gases from ...
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Lifespan and oxidative stress show a non linear response to atmospheric oxygen in Drosophila
... in atmospheric oxygen ...in atmospheric oxygen level by varying the degree of spiracular opening, convective ventilation, and/or the level of fluid in the tracheoles (Harrison et ...convective ...
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The Effect of Atmospheric Oxygen on the Puffing and Bursting Phenomena during Vegetable Oils Droplets Vaporization Process for Their Use as Biofuel in Diesel Engine
... of oxygen, oxidative and nonoxidative reactions will occur ...lar oxygen that are chemically bounded in triglyceride or oxygen-containing radi- cals (like OH, O) in vegetable ...of oxygen ...
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The Use of Medical Apparatus of THz Therapy “Ka Ve Tche O2 Orbit” on 129 0 GHz on Molecular Spectrum of Radiation and Absorbation of Atmospheric Oxygen in Healthy Volunteers and in Patients with Involutional Macular Degeneration
... of atmospheric oxygen on common state and hemodynamic parameters of orbital arteries during the irradiation of biological points of application (points of acupuncture) in healthy volunteers and in patients ...
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Atmospheric oxygen, giant Paleozoic insects and the evolution of aerial locomotor performance
... and oxygen availability (see ...increased oxygen concentration and air density in the early ...elevated atmospheric oxygen partial ...of atmospheric composition is minimally required as ...
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An evolutionary solution of terrestrial isopods to cope with low atmospheric oxygen levels
... Atmospheric oxygen concentration is a driving force for many major events in the evolution of life (reviewed in Berner et ...changing oxygen levels on ...environmental oxygen availability ...
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Continuous measurements of greenhouse gases and atmospheric oxygen at the Namib Desert Atmospheric Observatory
... In this paper, we discuss the configuration and perfor- mance of a new station constructed in 2012 at a near-coastal background site at Gobabeb (GAW station ID “NMB”), Namibia, here referred to as the Namib Desert Atmo- ...
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Simulating the climate response to atmospheric oxygen variability in the Phanerozoic: a focus on the Holocene, Cretaceous and Permian
... to oxygen vari- ability in a pre-industrial Holocene (PIH) ...that atmospheric oxygen may have deviated significantly from the present level of 21 % (see ...the oxygen content of the ...
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Preparation of primary standard mixtures for atmospheric oxygen measurements with less than 1 µmol mol−1 uncertainty for oxygen molar fractions
... with a new mass comparator (XP26003L, Mettler Toledo, Switzerland), which had a maximum capacity of 26.1 kg, a sensitivity of 1 mg, and a linearity of 20 mg. In this study, a cylinder whose mass was measured is hereafter ...
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Continuous measurements of atmospheric oxygen and carbon dioxide on a North Sea gas platform
... Forster, P., Ramaswamy, V., Artaxo, P., Berntsen, T., Betts, R., Fa- hey, D. W., Haywood, J., Lean, J., Lowe, D. C., Myhre, G., Nganga, J., Prinn, R., Raga, G., Schulz, M., and Van Dorland, R.: Changes in ...
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Hemodynamic Changes Caused by Exposure of Animals with Acute Immobilization Stress to Continuous Terahertz Radiation with Frequencies equal to Absorption and Emission Frequencies of Nitrogen Oxide and Atmospheric Oxygen
... Abstract: The aim was to study the effects of exposure of albino rats to continuous terahertz radiation with frequencies equal to absorption and emission frequencies of nitrogen oxide (150.176‐150.664 GHz) and ...
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Studies of the global carbon cycle using atmospheric oxygen and associated tracers
... Measurements of 021N2 ratio from the Cape Grim Air Archive and three independent flask sampling programs, Baseline Atmospheric Program Australia 1996, edited by J.Gras, N.Tindale and N.D[r] ...
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Bactericidal Effect of Anaerobic Broth Exposed to Atmospheric Oxygen Tested on Peptostreptococcus anaerobius
... Anaerobic TSB was After 4 h of aeration there was a significant prepared in an anaerobic box, autoclaved for 10 min, oxygen consumption by actinomyces broth as and then aerated for 30 mi[r] ...
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Modeling of Co2 Gas Detector Using Comsol Multiphysics
... the air. In this paper, we suggested a sensor which protects the Gold electric terminals of the sensor by dropping the foam drop over the sensor electrodes, which reduce the atmospheric oxygen effect on the ...
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Effects of body size on the oxygen sensitivity of dragonfly flight
... each oxygen level (Harrison and Lighton, 1998); in the present study, we used species means for 11 species as our data ...that atmospheric oxygen can be dropped fourfold with relatively minor changes ...
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Co-evolution of eukaryotes and ocean oxygenation in the Neoproterozoic era
... and oxygen (and also considers nitrogen, sulphur and iron), focusing on the balance of oxygen supply and demand in ocean waters (Box 1), the processes of weathering on the continents (Box 2), and the ...
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Characteristics of Early Cretaceous wildfires in peat-forming environment, NE China
... minimum oxygen content that can support combustion in nature is 15% (Belcher and McElwain ...of atmospheric carbon dioxide and aerosols, but also plays an important controlling role in the distribution and ...
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The adrenergic responses of carp (Cyprinus carpio) red cells: effects of PO2 and pH
... The water content kgH2Okg ' dry mass of the cell pellet of adrenalinetreated • and control O carp red cells as a function of extracellular pH at atmospheric oxygen tension A, N = 6-8 a[r] ...
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Primary Productivity and Forage Quality of Gingko Biloba in Response to Elevated Carbon Dioxide and Oxygen - An Experimental Approach to Mid-mesozoic Paleoecology
... to oxygen concentration through photorespiration ...elevated oxygen could counter potential reductions in Ginkgo leaf nutritive content in response to elevated carbon dioxide through ...elevated ...
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Controls on the evolution of Ediacaran metazoan ecosystems: A redox perspective
... Gradual equatorial migration of the South China Block (Li et al., 2013; Zhang et al., 2015) is associated with little change in dominant redox condition, with anoxia documented into the early Cambrian (Figure 3). In ...
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