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Substitution of chemical fertilizer by Chinese milk vetch improves the sustainability of yield and accumulation of soil organic carbon in a double-rice cropping system

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Journal of Integrative Agriculture 2019年第10期18卷 2381-2392页

作者： ZHOU Xing LU Yan-hong LIAO Yu-lin zhu qi-dong CHENG Hui-dan NIE Xin CAO Wei-dong NIE Jun College of Resources and Environment Hunan Agricultural UniversityChangsha 410128P.R.China Soil and Fertilizer Institute of Hunan Province Hunan Academy of Agricultural SciencesChangsha 410125P.R.China Scientific Observing and Experimental Station of Arable Land Conservation (Hunan) Ministry of AgricultureChangsha 410125P.R.China College of Bioscience and Biotechnology Hunan Agricultural UniversityChangsha 410128P.R.China Longping Branch Graduate School of Hunan University Changsha 410125P.R.China Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural SciencesBeijing 100081P.R.China

The double-rice cropping system is a very important intensive cropping system for food security in China. There have been few studies of the sustainability of yield and accumulation of soil organic carbon (SOC) in the double-rice cropping system following a partial substitution of chemical fertilizer by Chinese milk vetch (Mv). We conducted a 10-year (2008–2017) field experiment in Nan County, South-Central China, to examine the double-rice productivity and SOC accumulation in a paddy soil in response to different fertilization levels and Mv application (22.5 Mg ha^–1). Fertilizer and Mv were applied both individually and in combination (sole chemical fertilizers, Mv plus 100, 80, 60, 40, and 0% of the recommended dose of chemical fertilizers, labeled as F100, MF100, MF80, MF60, MF40, and MF0, respectively). It was found that the grain yields of double-rice crop in treatments receiving Mv were reduced when the dose of chemical fertilizer was reduced, while the change in SOC stock displayed a double peak curve. The MF100 produced the highest double-rice yield and SOC stock, with the value higher by 13.5 and 26.8% than that in the F100. However, the grain yields increased in the MF80 (by 8.4% compared to the F100), while the SOC stock only increased by 8.4%. Analogous to the change of grain yield, the sustainable yield index (SYI) of double rice were improved significantly in the MF100 and MF80 compared to the F100, while there was a slight increase in the MF60 and MF40. After a certain amount of Mv input (22.5 Mg ha^–1), the carbon sequestration rate was affected by the nutrient input due to the stimulation of microbial biomass. Compared with the MF0, the MF100 and MF40 resulted in a dramatically higher carbon sequestration rate (with the value higher by 71.6 and 70.1%), whereas the MF80 induced a lower carbon sequestration rate with the value lower by 70.1% compared to the MF0. Based on the above results we suggested that Mv could partially replace chemical fertiliz

关键词： Chinese milk vetch fertilizer application levels,rice yield soil organic carbon double-rice cropping system

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CHEMICAL CONVERSION OF INOSINE INTO 6-(2-METHYL PHENOXY)-PURLNENUCLEOSIDE DERIVATIVES

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Chinese Chemical Letters 1993年第10期4卷 851-852页

作者： Li Ya zhu qi dong ZHANG Zi Yun LIN Institute of Materia Medica,Chinese Academy of Medical Sciences Beijing 100050

A 6-pyridinium salt(2)was obtalned from 2',3',5'-tri-O-acetyhnosine by use of phosphoryl chloride as the condensmg *** conversion of salt(2)into 6-(2- methylphenoxy)-purinenucleoside(3)denvatives under mild condition ... 详细信息

关键词： OH CHEMICAL CONVERSION OF INOSINE INTO 6 METHYL PHENOXY PURLNENUCLEOSIDE DERIVATIVES

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制度思想政治教育探究

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安徽师范大学学报（社会科学版） 2012年第3期40卷 276-281页

作者：朱其东河海大学马克思主义学院南京210098

思想政治教育研究需要从制度理论的视野出发,厘清制度的思想政治教育功能。制度思想政治教育源于制度的内在功能和人与社会发展的根本要求。由于现代社会转型所引发的制度变革,在一定程度上消解了思想政治教育的制度基础。所以,只有立... 详细信息

思想政治教育研究需要从制度理论的视野出发,厘清制度的思想政治教育功能。制度思想政治教育源于制度的内在功能和人与社会发展的根本要求。由于现代社会转型所引发的制度变革,在一定程度上消解了思想政治教育的制度基础。所以,只有立足于思想政治教育的现代性遭遇,有意识地把社会制度建设纳入到思想政治教育体系中去,创新制度思想政治教育的方式,才能提高思想政治教育的有效性。

关键词：制度思想政治教育制度思想政治教育

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减氧空气驱井下管柱腐蚀规律与机理研究

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应用化工 2018年第S2期47卷 154-157,160页

作者：朱起东赵博朋海洋石油工程股份有限公司天津300450

本文利用高温高压反应釜模拟油田工况环境,通过失重法评价N80、P110两种材质试样在不同因素下试样的腐蚀规律;利用金相显微镜、SEM以及X射线衍射仪对形貌与产物成分进行表征,得出腐蚀机理。结果表明,随氧含量升高两种材质耐蚀性能的差... 详细信息

本文利用高温高压反应釜模拟油田工况环境,通过失重法评价N80、P110两种材质试样在不同因素下试样的腐蚀规律;利用金相显微镜、SEM以及X射线衍射仪对形貌与产物成分进行表征,得出腐蚀机理。结果表明,随氧含量升高两种材质耐蚀性能的差异逐渐减小,且腐蚀速率显著增加;通过腐蚀形貌的表征得出两种材质都有明显的局部腐蚀,XRD对腐蚀产物检测的结果表明腐蚀产物主要为碳酸亚铁和铁的氧化物,其中碳酸亚铁膜对试样具有保护效果,但受温度的影响较大。综合不同因素的实验结果,当氧含量低于1%时,N80钢比P110钢具有更好的耐蚀性。

关键词：氧气二氧化碳局部腐蚀保护膜

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New insight into the origin and evolution of the flora and fauna of Hainan Island, China

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Science China Earth Sciences 2025年第1期68卷 52-61页

作者： Hua zhu Center for Integrative Conservation Xishuangbanna Tropical Botanical Garden Chinese Academy of Sciences Yunnan International Joint Laboratory of Southeast Asia Biodiversity Conservation Yunnan Key Laboratory for the Conservation of Tropical Rainforests and Asian Elephants

The origin of the biota of Hainan Island, China, remains a fundamental scientific problem. Comparative studies on the biota, geological tectonics, and paleomagnetism proposed that during the Eocene, Hainan Island connected Vietnam and Guangxi, and then moved to the southeast to reach its present location. This review mainly discusses its biota origin from molecular phylogeny and palaeobotanical research. The formation and evolution of the biological groups of Hainan Island were identified via research on their genomes, phylogeny, and molecular biogeography. This research showed that the genera and species that appeared and diverged early in their evolution(i.e., before the Miocene) can be explained by the land connection between Hainan Island, Vietnam, and Guangxi during the Eocene-Oligocene. According to Southeast Asian tectonic theory, in the Middle Miocene(at about 15 million years ago), Hainan Island had moved to its present position. The population and genetic divergence of species with late divergence times(after 15 Ma) can be reasonably explained by the close proximity(or land connection) between Hainan Island and the Leizhou Peninsula, enabling genetic communication between Hainan Island and the Chinese mainland, but have exceptional cases. Conclusions have been obtained through palaeobotanical studies, showing that in the Eocene-Oligocene period, southwest China and Hainan Island had subtropical vegetation and flora. However, the fossil group in southeast China(in Maoming, near present-day Hainan Island) in the Late Eocene indicated a tropical rainforest vegetation and flora. This suggests that in the Paleogene, Hainan Island may have been located near or on the southwest border of Guangxi and northern Vietnam, rather than in its present location. The floristic division of the flora of Hainan Island basically presents a northeast-southwest inclined distribution pattern. This pattern can be explained by the counterclockwise rotation of Hainan Island during i

关键词： Molecular phylogeny Biogeography Paleobotany Origin of flora and fauna Hainan Island of China

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AQDS Enhances Degradation of BDE-47 by Promoting Shewanella oneidensis MR-1-mediated Fenton Reaction with Fe(III)-containing Minerals

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Journal of Earth Science 2025年

作者： Yongguang Jiang Siqi zhu Zhou Jiang Yiran dong Liang Shi School of Environmental Studies， China University of Geosciences State Key Laboratory of Biogeology and Environmental Geology， China University of Geosciences Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science， China University of Geosciences State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution， Ministry of Ecology and Environment， China University of Geosciences(Wuhan)

Electron shuttles are widespread in the environments and play important role in microbe-mineral interaction. This study investigated the effects of a model electron shuttle (i.e.， anthraquinone-2， 6-disulfonate， AQDS) on Shewanella oneidensis MR-1-mediated Fenton reaction and subsequent degradation of 2， 2′， 4， 4′-tetrabrominated diphenyl ether (BDE-47). Three Fe(III)-containing minerals， namely， ferrihydrite， goethite and nontronite， were used as electron acceptors and Fe(II) sources. With each mineral， additions of 0.01 – 1 mM AQDS in the reactions significantly enhanced Fe(III) reduction by S. oneidensis MR-1 and increased the amounts of Fe(II) produced in anoxic phase. As a result， the amounts of cumulative ·OH formed in oxic phase were increased by 10% – 287%. Regression analysis revealed that ·OH cumulation has significant linear correlation with sorbed Fe(II) but not aqueous and structural Fe(II). This finding may be ascribed to the higher reactivity of sorbed Fe(II) in oxygenation than the latter two types of Fe(II). With more ·OH， the degradation efficiency of BDE-47 was elevated by 31% – 173%. Collectively， AQDS enhances ·OH formation and BDE-47 degradation by promoting production of Fe(II)， particularly sorbed Fe(II) in S. oneidensis MR-1-mediated Fenton reaction with Fe(III)-containing minerals.

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APF和SVC联合运行的稳定控制

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电力系统自动化 2005年第18期29卷 29-32,94页

作者：邓礼宽姜新建朱东起陈峻岭清华大学电机系北京市100084

研究了有源电力滤波器(APF)和静止无功补偿器(SVC)联合运行中的互相影响问题,指出在两者同时运行的情况下SVC控制器的设计要考虑到APF的影响,否则系统可能会不稳定。通过分析APF对SVC的影响途径,指出APF采用通常的Ip-Iq检测方法时,与SV... 详细信息

研究了有源电力滤波器(APF)和静止无功补偿器(SVC)联合运行中的互相影响问题,指出在两者同时运行的情况下SVC控制器的设计要考虑到APF的影响,否则系统可能会不稳定。通过分析APF对SVC的影响途径,指出APF采用通常的Ip-Iq检测方法时,与SVC的耦合程度大;而采用“补偿特定次数谐波”方法时,与SVC的耦合程度小,此时APF是否投入对系统的稳定性基本没有影响,因此提高了系统可靠性。

关键词：有源电力滤波器静止无功补偿器稳定控制

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哲学视角下爱国主义的概念实质和现实表达

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贺州学院学报 2013年第2期29卷 20-23页

作者：朱其东广西科技大学党委办公室广西柳州545006

历史唯物主义是爱国主义的哲学本原。通过阐明以往爱国主义(特别对爱国主义本质的定义)研究的片面性和不彻底性,从哲学的角度或高度去抽象和概括爱国主义的本质属性是关心维护和发展祖国利益,并论证了只有关心维护和发展祖国利益,才是... 详细信息

历史唯物主义是爱国主义的哲学本原。通过阐明以往爱国主义(特别对爱国主义本质的定义)研究的片面性和不彻底性,从哲学的角度或高度去抽象和概括爱国主义的本质属性是关心维护和发展祖国利益,并论证了只有关心维护和发展祖国利益,才是爱国主义这一社会活动或社会现象的唯一特性。

关键词：爱国主义哲学本质

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办学理念、办学定位与地方工科院校办学特色建设

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高教论坛 2007年第6期 52-54页

作者：朱其东广西工学院广西柳州545006

本文试图在分析地方工科院校办学定位的特色的基础上,提出地方工科院校办学特色建设的关键是办学理念与办学定位特色。

关键词：办学理念办学定位地方工科院校办学特色

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Modification of Maxwell model for conductivity prediction of carbon nanotubes-filled polymer composites with tunneling effect

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 25-36页

作者： Jue zhu Longyuan LI Ningtao zhu Zhejiang Provincial Engineering Research Center for the Safety of Pressure Vessel and Pipeline Key Laboratory of Impact and Safety Engineering (Ningbo University) Ministry of Education School of Engineering Computing and Mathematics University of Plymouth Xi'an Zhanshi Testing & Engineering Co.Ltd.

Carbon nanotubes(CNTs) have garnered great attention in recent years due to their outstanding electrical, thermal, and mechanical properties. The incorporation of small amounts of CNTs in polymers can substantially improve the sensitivity of the polymer's electrical conductivity. This paper presents a modified Maxwell model to evaluate the electrical conductivity of CNTs-filled polymer composites by introducing a transition zone to account for the tunneling effect. In this modified Maxwell model, the CNTs-filled polymer composite is modeled as a three-phase composite, consisting of a matrix(polymer), inclusions(CNTs), and a transition zone(tunneling zone). The effective electrical conductivity(EEC) of the composite is calculated based on the volume fractions and electrical conductivities of the matrix, inclusions, and transition zone. The model's validity is confirmed through the use of available test data, which demonstrates its capability to accurately capture the nonlinear conductivity behavior observed in CNTs-polymer composites. This study offers valuable insights into the design of high-performance conductive polymer nanocomposites, and enhances the understanding of electrical conduction mechanisms in CNT-dispersed polymer composites.

关键词： Nanoclay

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