Major Biochemical Forms and Distribution Among Marine Sedimentary Particles and Vascular Plant Tissues
Major Biochemical Forms and Distribution Among Marine Sedimentary Particles and Vascular Plant Tissues
批准号:
9101908
负责人:
John Hedges
金额:
$66.76万
依托单位:
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1991
资助国家:
美国
项目状态:
已结题
起止时间:
1991-04-01 至 1994-09-30
中文摘要
对主要生物化学物质的地球化学性质的研究将继续:a)。从沉积物混合物中分离不同类别的颗粒,然后确定主要的生化成分、它们的微环境以及对化学和生物制剂的潜在反应性。b)。研究酯结合酚酸在非木本维管植物组织的分类横截面中的分布和成键,并将这一信息与这些生物化学复杂材料典型的不同组成和成岩模式联系起来。c)。调查越来越多的证据表明维管植物组织中的一种主要多糖成分是常规分子水平分析所不能解释的。
英文摘要
Research on the geochemistries of the major biochemicals will continue by: a). Isolating different particle classes from sediment mixtures and then determining the major biochemical components, their microenvironments, and potential reactivities toward chemical and biological agents. b). Studying the distribution and bonding of ester-bound phenolic acids in a taxonomic cross section of nonwoody vascular plant tissues and relating this information to the diverse compositions and diagenetic patterns typical of these biochemically complex materials. c). Investigating the growing evidence for a major polysaccharide component of vascular plant tissues that is not accounted for by conventional molecular- level analyses.
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Mechanisms of Organic Matter Preservation in Marine Sediments: A Focus on Oxygen Sensitive Organic Matter
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批准号:9711690
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项目类别:Continuing Grant
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资助金额:$55.5万
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财政年份:1997
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负责人:John Hedges
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依托单位:
Organic Geochemical Studies in the Southern Ocean
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批准号:9531763
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项目类别:Continuing Grant
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资助金额:$29.3万
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财政年份:1996
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负责人:John Hedges
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依托单位:
Characterization of Dissolved Organic Matter in Seawater by Ultrafiltration and Chemical Analysis
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批准号:9402361
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项目类别:Continuing Grant
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资助金额:$24.71万
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财政年份:1994
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负责人:John Hedges
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依托单位:
Collaborative Research: Organic Geochemical Studies In The Arabian Sea
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批准号:9310684
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项目类别:Continuing Grant
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资助金额:$39.01万
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财政年份:1994
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负责人:John Hedges
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依托单位:
Distribution, Forms, and Reactions of Major Biochemicals in Marine Environments
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批准号:9401903
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项目类别:Continuing Grant
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资助金额:$82.91万
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财政年份:1994
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负责人:John Hedges
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依托单位:
Organic Geochemical Flux Studies in the Equatorial Pacific Using Swimmer Excluding Rotator Traps
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批准号:9022319
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项目类别:Continuing Grant
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资助金额:$34.58万
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财政年份:1991
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负责人:John Hedges
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依托单位:
Characterization of Dissolved Organic Matter in Seawater by Ultrafiltration and Major Biochemical Analysis
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批准号:9102150
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项目类别:Continuing Grant
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资助金额:$21.19万
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财政年份:1991
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负责人:John Hedges
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依托单位:
Proposal for a Workshop: The Measurement of Dissolved Organic Carbon in Natural Waters
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批准号:9103090
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项目类别:Standard Grant
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资助金额:$10.0万
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财政年份:1991
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负责人:John Hedges
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依托单位:
Application of Additional CuO Reaction Products as Geochemical Indicators
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批准号:9007873
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项目类别:Continuing Grant
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资助金额:$14.38万
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财政年份:1990
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负责人:John Hedges
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依托单位:
Field Testing of a New IRS Sediment Trap Designed to ExcludeSwimmers
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批准号:9015914
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项目类别:Standard Grant
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资助金额:$8.7万
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财政年份:1990
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负责人:John Hedges
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依托单位:
Comparative Geochemistries of the Major Biochemicals in Marine Environments
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批准号:8716481
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项目类别:Continuing Grant
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资助金额:$54.98万
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财政年份:1988
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负责人:John Hedges
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依托单位:
The Effectiveness of Poisons and Preservatives on Preventing the Decomposition of Organic Matter Collected in Sediments Traps
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批准号:8711016
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项目类别:Continuing Grant
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资助金额:$27.67万
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财政年份:1987
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负责人:John Hedges
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依托单位:
A Search for New Biomarkers Among the Nonlignin CuO ReactionProducts of Natural Materials
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批准号:8613868
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项目类别:Continuing Grant
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资助金额:$14.9万
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财政年份:1986
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负责人:John Hedges
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依托单位:
Geochemistry of Lignins, Carbohydrates and Humic Substances in Marine Environments
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批准号:8421023
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项目类别:Continuing Grant
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资助金额:$48.17万
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财政年份:1985
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负责人:John Hedges
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依托单位:
Electron Spin Resonance (Esr) Studies of Chemical SpeciationIn Ionic Solutions Like Sea Water From 20-300'c and 1-100 Atm
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批准号:8406587
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项目类别:Continuing Grant
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资助金额:$20.1万
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财政年份:1984
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负责人:John Hedges
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依托单位:
Geochemistry of Humic Substances in Recent Marine Sediments
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批准号:8219294
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项目类别:Continuing Grant
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资助金额:$22.99万
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财政年份:1983
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负责人:John Hedges
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依托单位:
Geochemistry of Humic Substances in Recent Marine Sediments
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批准号:8023970
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项目类别:Continuing Grant
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资助金额:$18.38万
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财政年份:1981
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负责人:John Hedges
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依托单位:
A Test of the Melanoidin Hypothesis By Degradative Structural Analysis
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批准号:7818260
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项目类别:Continuing Grant
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资助金额:$9.86万
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财政年份:1978
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负责人:John Hedges
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依托单位:
海外基金