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浏览/检索结果: 共8条，第1-8条 帮助 限定条件 发表日期：2018    内容类型：学位论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 基于高分辨质谱的土壤溶解性有机质化学多样性研究 学位论文 北京: 中国科学院生态环境研究中心, 2018 作者:  李晓明 收藏  |  浏览/下载：24/0  |  提交时间：2020/07/15 土壤溶解性有机质， 化学多样性，微生物多样性， 傅立叶变换离子回旋 共振质谱  decreased WIth IncreasIng Iron ComplexIng Index. PAtterns In Molecular PrOfiles IndicAted Dom In Paddy Soils To Become More RecalcItrAnt At Higher Soil C/n rAtio And Higher Soil Ph. furTherMore, PlAnt-derived polyPh.nols And Pyrogenic Dom Were retaIned Favorably By Iron And The ChemodiversIty Of Dom In Paddy Soil Increased WIth IncreasIng Soil C/n rAtios. These Results Provide Novel InFormAtion regardIng Dom Characteristics At a Molecular Level And Will InForm Better Global MAnagement Of Soil Carbon In Paddy Soil EcosysteMs Global. 2) Through The applicAtion Of Ft-icr-Ms, The ChemodiversIty Of Dom In Soil Subjected To Long-term OrgAnic Carbon And InOrgAnic Fertilizer Amendments Was Established. In Parallel, Bcc Was Assessed. Through This Coupled Approach It Was Established.thAt sustaIned OrgAnic Carbon Amendment Resulted In: SignificAntly (p < 0.05) Increased Total Carbon And Total nItrogen Reservoirs In Soil, Dom PrOfiles Of greAter ChemodiversIty, And Emergence Of RecalcItrAnt Dom Moieties (H/c < 1.5). In Contrast, Carbon And nItrogen Reservoirs In Soil Subjected To sustaIned InOrgAnic Fertilizer applicAtion Were Unaltered, While Soil OrgAnic Carbon ChemodiversIty Was Observed To Shift To Less RecalcItrAnt Dom Moieties (H/c rAtio > 1.5 And O/c rAtios < 0.5). furTherMore, sustaIned OrgAnic Carbon Amendment Shaped Bcc To a eutroPh.c stAte While Long-term Chemical fertilizAtion Directed The Bcc Towards An oligotroPh.c stAte. Higher connectivIty And Network complexIty Were Observed In OrgAnic Carbon Amended Soils. Dom-Bcc Network Analysis, IndicAtIng thAt Soil Microbes Had More Interaction WIth Dom Molecules followIng sustaIned OrgAnic mAtter Input. These Results Highlight The Potential For OrgAnic Carbon Amendments To Not Only Build Soil Carbon sTocks And Increase Their Resilience, But To Also Improve The Functional stAte Of Soil Microbial communIties. Key Words: Dom, ChemodiversIty, Microbial diversIty, Ft-icr Ms   外热式内构件固定床/移动床煤热解反应器的数值模拟 学位论文 : 中国科学院研究生院, 2018 作者:  钱亚男 收藏  |  浏览/下载：111/0  |  提交时间：2019/03/29 煤热解,反应分子动力学（reaxff Md）,Cfd模拟,内构件,固定床/移动床   亚熔盐介质中活性氧生成机理及赋存规律非线性光谱及分子模拟基础研究 学位论文 : 中国科学院研究生院, 2018 作者:  吕页清 收藏  |  浏览/下载：38/0  |  提交时间：2019/03/29 活性氧,Ho2-离子,和频光谱,量子力学模拟,分子动力学模拟   酸性离子液体基Zr-MOF的合成及其催化性能研究 学位论文 : 中国科学院研究生院, 2018 作者:  徐子晨 收藏  |  浏览/下载：112/0  |  提交时间：2019/03/29 金属有机框架材料,离子液体,固载化,酯化反应,疏水性修饰   三维薄膜润滑系统的多尺度模拟方法及其应用 学位论文 北京: 中国科学院大学, 2018 作者:  赵园格 收藏  |  浏览/下载：76/0  |  提交时间：2018/05/31 准连续方法  薄膜润滑系统  多尺度模拟  石墨烯涂层   极值方法在分子模拟中的计算效率和可靠性研究 学位论文 北京: 中国科学院大学, 2018 作者:  双飞 收藏  |  浏览/下载：55/0  |  提交时间：2018/05/23 红树植物对高温响应与适应的生理生化特征及其分子生态学机制 学位论文 : 南海海洋研究所, 2018 作者:  刘锦 收藏  |  浏览/下载：395/0  |  提交时间：2019/09/11 红树植物，白骨壤，高温胁迫，P5CS，CDPK   基于乙肝核心抗原病毒样颗粒及其衍生物颗粒性质的纯化和应用过程设计 学位论文 : 中国科学院大学, 2018 作者:  李正军 收藏  |  浏览/下载：19/0  |  提交时间：2020/06/17 乙肝核心抗原病毒样颗粒,疏水色谱,颗粒学,加热处理,载体