搜索结果: 1-15 共查到“地质学 Oxygen”相关记录26条 . 查询时间(0.136 秒)
Recycling of tectonic plates a key driver of Earth’s oxygen budget（图）
构造板块 地球氧气收支 氧气循环
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2023/5/23
A new study co-led by a Cornell researcher has identified serpentinite – a green rock that looks a bit like snakeskin and holds fluids in its mineral structures – as a key driver of the oxygen recycli...
Carbon hides in sediment,keeping oxygen in atmosphere（图）
Carbon hides sediment keeping oxygen atmosphere
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2019/10/28
A new study by researchers at the Woods Hole Oceanographic Institution and Harvard University may help settle a long-standing question: how do small amounts of organic carbon become locked away in roc...
中国地质大学科学技术发展院张磊（博士生）， 赵来时等GPMR国家重点实验室 Geochimica et Cosmochimica Acta, 2017. Raman spectral, elemental, crystallinity, and oxygen-isotope variations in conodont apatite during diagenesis
牙形；石磷；灰石；古海洋；古气候
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2021/10/21
近日，中国地质大学地质过程与矿产资源国家重点实验室赵来时教授团队在国际著名期刊《Geochimica et Cosmochimica Acta》发表题为Raman spectral, elemental, crystallinity, and oxygen-isotope variations in conodont apatite during diagenesis（牙形石磷灰石的拉曼光谱、元素...
Controlling factors in stalagmite oxygen isotopic composition and the paleoprecipitation record for the last 1,100 years in Northeast Japan
ortheast Japan stalagmite d18O growth rate precipitation famine records
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2017/4/10
Stable oxygen isotopic analysis was performed on the UT-A stalagmite with annual microbanding from the Uchimagido
Cave in Iwate Prefecture on the Pacific side of Northeast Japan. High-resolution anal...
Oxygen isotopes as a valuable tool for measuring annual growth in tropical trees that lack distinct annual rings
tropical tree with non-distinct annual rings cellulose oxygen isotopes fractionation model Styrax tonkinensis Ficus semicordata var. semicordata
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2017/4/11
Some trees from tropical areas lack visually detectable and consistent annual growth rings. As such, we have measured
the radial variation of cellulose oxygen isotopes in trees that grow in seasonall...
Hydrogen and oxygen isotopic characteristics of precipitation in coastal areas of Japan determined by observations for 23 years at Akita and for 1–2 years at other several localities
Japanese meteoric water precipitation hydrogen isotopic ratio oxygen isotopic ratio d-valu
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2017/4/11
The hydrogen and oxygen isotopic characteristics of precipitation in coastal areas of Japan were explained on the basis
of a long period (23 years) observation of hydrogen and oxygen isotopic ratios ...
Characteristics of hydrogen and oxygen stable isotope ratios in precipitation collected in a snowfall region, Aomori Prefecture, Japan
hydrogen isotope ratio oxygen isotope ratio d-excess seasonal variation Aomori Prefecture
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2017/4/10
Characteristics of δ2
H and δ18O in precipitation samples collected at 16- to 17-d intervals at three stations at the
northern end of Honshu Island, Japan, were investigated. Rokkasho and Ajigasawa ...
Sulfur, oxygen, and hydrogen isotope compositions of precipitation in Seoul, South Korea
sulfur isotope oxygen hydrogen pollution precipitation sulfate Korea East Asia
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2017/4/11
To evaluate the source of sulfur and the extent of seasonal and local characteristics in Seoul’s precipitation chemistry,
we measured sulfur, oxygen, and hydrogen isotopic ratios of precipitation. Th...
Carbon- and oxygen-isotope compositions of a modern deep-water brachiopod Campagea japonica collected off Aguni-jima, Central Ryukyu Islands, southwestern Japan
rachiopoda carbon-isotope composition oxygen-isotope composition Campagea japonica paleoenvironmen
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2017/4/11
We present carbon- and oxygen-isotope compositions in a shell (δ13CS and δ18OS, respectively) of a modern brachiopod
Campagea japonica collected at a water depth of 606 m off Aguni-jima, Central Ryuk...
Therapeutic Efficacy of Hyperbaric Oxygen on the Severe Acute Mountain Sickness Complicated with MODS
Hyperbaric Oxygen MODS Severe Acute Mountain Sickness Therapy
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2011/12/16
Objective: To observe the treatment effects of hyperbaric oxygen on severe acute mountain sickness (ASHS) integrated with multiple organ dysfunction syndromes (MODS). Methods: 2006-2010 admitted to tw...
On the theoretical calculations of oxygen isotope fractionation factors for carbonate-water systems
oxygen isotope fractionation factor carbonate-water system theoretical calculation
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2017/4/12
Theoretical and experimental aspects of oxygen isotope fractionation in carbonate minerals are critically examined
based on a direct comparison of fractionation factors for carbonate-water systems. T...
Universal scaling of dissolved oxygen distribution at the sediment-water interface: A power law
Universal scaling dissolved oxygen distribution the sediment-water interface A power law
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2014/5/13
Dissolved oxygen (DO) distribution at the sediment-water interface of a flow over a smooth bed is investigated for Reynolds numbers >360 and <4,090. These conditions are commonly encountered in stream...
Why the phosphorus retention of lakes does not necessarily depend on the oxygen supply to their sediment surface
phosphorus retention of lakes oxygen supply sediment surface
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2014/5/20
In order to improve the trophic state of Lake Sempach, a eutrophied lake in central Switzerland, its external phosphorus (P) load has been decreased and its hypolimnion has been artificially oxygenate...
Oxygen-Isotope Fractionation between Aluminum-Hydroxide Phases and Water at <60C: Results of Decade-Long Synthesis Experiments
Aluminum Hydroxides Fractionation Factor Gibbsite Oxygen Isotope Synthesis
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2011/12/6
Abstract: Oxygen-isotope data were obtained for synthetic aluminum-hydroxide phases precipitated over 65–125 mo and have been compared to results from similar experiments conducted for 3–56 mo. The Al...
Reactive Al-O-Al sites in a natural zeolite: Triple-quantum oxygen-17 nuclear magnetic resonance
Reactive Al-O-Al sites natural zeolite Triple-quantum oxygen-17 nuclear magnetic resonance
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2012/4/1
In framework aluminosilicate materials (e.g., feldspars, zeolites and many others), it is generallyassumed that AlOtetrahedra do not share corners, i.e., that Al-O-Al oxygen sites are avoided whenstoi...