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Journal of Ocean University of China 2020年第4期19卷 818-826页

作者： WANG Dunfan jin chong jin Aimin LOU Zhanghua Marine Geology&Resources Ocean CollegeZhejiang UniversityZhoushan 316021China Deep Sea Science Division Institute of Deep Sea Science and EngineeringChinese Academy of SciencesSanya 572000China Zhejiang Institute of Geology and Mineral Rescource Hangzhou 310007China

To characterize the Fe(III)-reducing bacteria,enrichment cultures were initiated by inoculating deep-sea sediment from the South China Sea(SCS)into the media with hydrous ferric oxide(HFO)as the sole electron *** indicated by Meta 16S rDNA Amplicon Sequencing,the microorganisms related to Fe(III)-reduction in the enrichment cultures were mainly Shewanella and Enterobacter.A new facultative Fe(III)-reducing bacterium was obtained and identified as Enterobacter ***-1 based on its 16S rRNA gene sequence and physiological *** ***-1 was not only a mesophilic bacterium capable of reducing HFO with a wide range of salinity(4,34,40,50 and 60 g L−1)efficiently,but also a piezotolerant bacterium that can proceed Fe(III)-reduction sustainedly at hydrostatic pressures between 0.1 and 50 MPa using glucose and pyruvate as carbon ***,the geochemical characteristics of deep-sea sediment indicated that the microbial metabolism and iron reduction both remain active in the well-developed Fe(III)-reducing zone where the strain Nan-1 was *** our knowledge,Enterobacter ***-1 could serve as a new applicative Fe(III)-reducing bacterium for future investigation on the iron biogeochemical cycle and diagenetic process of organic matter in the deep-sea environment.

关键词： deep-sea sediment Fe(Ⅲ)-reducing bacteria Meta 16S rDNA Amplicon Sequencing high hydrostatic pressures Enterobacter sp.Nan-1

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植物适应土壤逆境的分子机制研究进展

植物营养与肥料学报 2024年第7期30卷 1329-1338页

作者：施卫明郑绍建金崇伟王萌丁忠杰李光杰中国科学院南京土壤研究所/土壤与农业可持续发展全国重点实验室江苏南京210008 浙江大学生命科学学院/植物抗逆高效全国重点实验室浙江杭州310058 山东省农业科学院农业资源与环境研究所/养分资源高效利用全国重点实验室山东济南250100

土壤逆境泛指对植物生长和生存不利的各种土壤环境因素,如盐碱、酸性、淹水涝害等。植物在长期的进化过程中,对不同土壤逆境会产生一定的适应能力,了解植物对土壤逆境的生理反应和耐性分子机理,对发掘植物生长潜力,提高农业生产效率十... 详细信息

土壤逆境泛指对植物生长和生存不利的各种土壤环境因素,如盐碱、酸性、淹水涝害等。植物在长期的进化过程中,对不同土壤逆境会产生一定的适应能力,了解植物对土壤逆境的生理反应和耐性分子机理,对发掘植物生长潜力,提高农业生产效率十分重要。我国植物营养生物学科研人员经过30多年的努力,在植物适应土壤逆境的分子机制研究领域,取得了一批国际领先的研究成果,本文就近年来取得的部分土壤逆境的适应机制的进展(铝毒害、铁毒害和盐碱胁迫)进行简要评述。如以STOP1为核心的植物抗铝调控机制;ALR1作为一个铝离子受体调控植物的抗铝性;根际铁在调控铵态氮耐性和氮素利用效率的分子机制;提升小麦耐盐性且不会影响穗发育的TaSPL6-D基因等。

关键词：土壤逆境铝毒铁毒盐碱适应机制

PVC管道胶水中1,2-二氯乙烷检测及其健康风险评估

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广州化工 2024年第7期52卷 125-127页

作者：郑姝倩金崇崇蒋辉郑涛江恩赐浙江方圆检测集团股份有限公司浙江杭州310018

为了解PVC管道胶水中1,2-二氯乙烷在装修时对施工人员存在的潜在致癌风险,基于美国环境保护总局(EPA)的健康风险评价办法,建立了经呼吸途径下的暴露量计算模型和致癌风险评估模型。从市场上采集了30批胶水样本,采用气相色谱法(GC)对PVC... 详细信息

为了解PVC管道胶水中1,2-二氯乙烷在装修时对施工人员存在的潜在致癌风险,基于美国环境保护总局(EPA)的健康风险评价办法,建立了经呼吸途径下的暴露量计算模型和致癌风险评估模型。从市场上采集了30批胶水样本,采用气相色谱法(GC)对PVC管道胶水中的1,2-二氯乙烷含量进行检测,22批样本有检出。结果表明,市面上大部分PVC管道胶水中1,2-二氯乙烷存在极高的致癌风险,比可接受值(10^(-4))高3400倍。

关键词： PVC管道胶水 1,2-二氯乙烷 EPA 气相色谱

Upper Paleozoic Marine Shale Characteristics and Exploration Prospects in the Northwestern Guizhong Depression,South China

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Journal of Ocean University of China 2018年第4期17卷 773-790页

作者： ZHU Zhenhong YAO Genshun LOU Zhanghua jin Aimin ZHU Rong jin chong CHEN Chao Ocean College Zhejiang UniversityZhoushan 310058China Hangzhou Institute of Petroleum Geology Hangzhou 310023China Zhejiang Institute of Geology and Mineral Rescource Hangzhou 310007China

Multiple sets of organic-rich shales developed in the Upper Paleozoic of the northwestern Guizhong Depression in South China. However, the exploration of these shales is presently at a relatively immature stage. The Upper Paleozoic shales in the northwestern Guizhong Depression, including the Middle Devonian Luofu shale, the Nabiao shale, and the Lower Carboniferous Yanguan shale, were investigated in this study. Mineral composition analysis, organic matter analysis(including total organic carbon(TOC) content, maceral of kerogen and the vitrinite reflection(Ro)), pore characteristic analysis(including porosity and permeability, pore type identification by SEM, and pore size distribution by nitrogen sorption), methane isothermal sorption test were conducted, and the distribution and thickness of the shales were determined, Then the characteristics of the two target shales were illustrated and compared. The results show that the Upper Paleozoic shales have favorable organic matter conditions(mainly moderate to high TOC content, type Ⅰ and Ⅱ_1 kerogen and high to over maturity), good fracability potential(brittleness index(BI) > 40%), multiple pore types, stable distribution and effective thickness, and good methane sorption capacity. Therefore, the Upper Paleozoic shales in the northern Guizhong Depression have good shale gas potential and exploration prospects. Moreover, the average TOC content, average BI, thickness of the organic-rich shale(TOC > 2.0 wt%) and the shale gas resources of the Middle Devonian shales are better than those of the Lower Carboniferous shale. The Middle Devonian shales have better shale gas potential and exploration prospects than the Lower Carboniferous shales.

关键词： shale gas shale characteristics exploration prospects Guizhong Depression South China

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外海潮流能总成平台施工关键技术研究及应用

中国港湾建设 2024年第6期44卷 67-71,90页

作者：高小荣徐少东金崇强中交第三航务工程局有限公司宁波分公司浙江宁波315200

潮流能作为可再生清洁能源的一种,有储量大、变化有规律、对环境影响小等优势,且潮流能发电装置更容易实现独立发电和并网,是海洋能发电方式的首选。我国在潮流能转换与发电系统的设计与关键施工技术方面取得了长足进步,尤其大力开发清... 详细信息

潮流能作为可再生清洁能源的一种,有储量大、变化有规律、对环境影响小等优势,且潮流能发电装置更容易实现独立发电和并网,是海洋能发电方式的首选。我国在潮流能转换与发电系统的设计与关键施工技术方面取得了长足进步,尤其大力开发清洁新能源的提出,给海上潮流能的关键施工技术带来了巨大的机遇与挑战。而大型潮流能发电机组总成平台的顺利施工与否是实现潮流能发电的关键与前提。针对大型海洋潮流能发电机组总成平台外海运输系泊条件复杂、平台自浮困难等问题,采用多点系缆配合、增设临时浮箱等方法,实现大型海洋潮流能发电机组总成平台顺利安装,为今后类似工程施工提供借鉴。

关键词：潮流能总成平台临时浮箱辅助系泊

Preparation of AgCl Nano-Crystal Embedded Tellurite Nonlinear Optical Glasses under Electric Field Accompanied Heat Treatment

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Journal of Materials Science & Technology 2008年第6期24卷 863-866页

作者： Jian LIN Wenhai HUANG Bofang LI chong jin Changcheng LIU Shuhua LEI Zhenrong SUN College of Materials Science and Engineering Tongji University Shanghai 200092 China Key Lab of Optical Magnetic Resonance Spectroscope East China Nomal University Shanghai 200062 China

The quantum effect of nano-crystals is an important factor to improve nonlinear optical performance of nanocrystal embedded glasses, while controlling the size distribution and content of nano-crystals in the glass accurately is a key to obtain good quality. The auxiliary direct current electric field, accompanied with heat treatment, was applied on AgCI containing niobic tellurite glass sheet. The nucleation and crystallization of the glass were well controlled under auxiliary electric field. It was found that the average size of AgCI nano-crystal particles in the glass is smaller than that under single heat treatment, and the content of nano- crystals is higher. Therefore the third-order nonlinear optical performance of the glass was increased a lot. The local-area distributed AgCl nano-crystal particles can also be embedded into a glass sheet by using locally applied electric field.

关键词： Tellurite glass Electric field Nonlinear optical performance

Effect of orbital errors on the geosynchronous circular synthetic aperture radar imaging and interferometric processing

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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第5期12卷 404-416页

作者： Lei-lei KOU Xiao-qing WANG Mao-sheng XIANG jin-song chong Min-hui ZHU National Key Laboratory of Microwave Imaging Technology Institute of Electronics Beijing 100190 China Graduate University of Chinese Academy of Sciences Beijing 100190 China

The geosynchronous circular synthetic aperture radar (GEOCSAR) is an innovative SAR system,which can produce high resolution three-dimensional (3D) images and has the potential to provide 3D deformation *** an orbit altitude of approximately 36 000 km,the orbit motion and orbit disturbance effects of GEOCSAR behave differently from those of the conventional spaceborne *** this paper,we analyze the effects of orbit errors on GEOCSAR imaging and interferometric ***,we present the GEOCSAR imaging geometry and the orbit errors model based on perturbation ***,we give the GEOCSAR signal formulation based on imaging geometry,and analyze the effect of the orbit error on the output focused *** interferometric processing on the 3D reconstructed images,the relationship between satellite orbit errors and the interferometric phase is *** demonstrate the effects of orbit errors on the GEOCSAR images,interferograms,and the *** conclusions are that the required relative accuracy of orbit estimation should be at centimeter level for GEOCSAR imaging at L-band,and that millimeter-scale accuracy is needed for GEOCSAR interferometric processing.

关键词： Geosynchronous circular synthetic aperture radar (GEOCSAR) Orbit error Imaging Interferometric processing

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分光光度法测定土壤中挥发酚的方法验证

广州化工 2024年第6期52卷 101-103页

作者：华勤磊方锡钦金崇君马彦波浙江清盛检测技术有限公司浙江宁波315000

土壤中挥发酚是我国土壤环境监测的常规指标之一,测定土壤中的挥发酚大多采用4-氨基安替比林分光光度法,通过测定校准曲线线性系数、检出限、测定下限、精密度和准确度等特征参数,对《土壤和沉积物挥发酚的测定4-氨基安替比林分光光度法... 详细信息

土壤中挥发酚是我国土壤环境监测的常规指标之一,测定土壤中的挥发酚大多采用4-氨基安替比林分光光度法,通过测定校准曲线线性系数、检出限、测定下限、精密度和准确度等特征参数,对《土壤和沉积物挥发酚的测定4-氨基安替比林分光光度法》(HJ 998-2018)进行了方法验证,以评价该检测方法是否适用于土壤中挥发酚的检测工作,以确保该方法能够满足土壤中挥发酚的测定。

关键词：土壤分光光度法有机质

A Novel Two-Dimensional Photonic Crystal

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Chinese Physics Letters 1999年第1期16卷 20-22页

作者： jin chong-jun LI Zhao-lin ZHANG Dao-zhong CHENG Bing-ying Laboratory of Optical Physics Institute of Physics&Center for Condensed Matter PhysicsChinese Academy of SciencesBeijing 100080

A novel two-dimensional photonic crystal that possesses absolute photonic band gaps for both transverse-magnetic and transverse-electric polarized waves is *** wave method is used for calculating their photonic band *** show that,for this structure,two absolute photonic band gaps appear in dielectric cylinders periodically imbedded in an air background.

关键词： absolute transverse cylinders

Numerical simulation on the influence of plant root morphology on shear strength in the sandy soil,Northwest China

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Journal of Arid Land 2024年第10期16卷 1444-1462页

作者： ZHANG Lingkai SUN jin SHI chong College of Water Resources and Civil Engineering Xinjiang Agricultural UniversityUrumqi 830052China Xinjiang Key Laboratory of Water Conservancy Engineering Safety and Water Disaster Prevention and Control Urumqi830052China Geotechnical Research Institute Hohai UniversityNanjing 210098China

Serious riverbank erosion,caused by scouring and soil siltation on the bank slope in the lower reaches of the Tarim River,Northwest China urgently requires a *** roots play an important role in enhancing soil shear strength on the slopes to maintain slope soils,but the extent of enhancement of soil shear strength by different root distribution patterns is *** study used a combination of indoor experiments and numerical simulation to investigate the effects of varying plant root morphologies on the shear strength of the sandy soil in the Tarim *** results showed that:(1)by counting the root morphology of dominant vegetation on the bank slope,we summarized the root morphology of dominant vegetation along the coast as vertical,horizontal,and claw type;(2)the shear strength of root-soil composites(RSCs)was significantly higher than that of remolded soil,and the presence of root system made the strain-softening of soil body significantly weakened so that RSCs had better mechanical properties;and(3)compared with the lateral roots,the average particle contact degree of vertical root system was higher,and the transition zone of shear strength was more ***,vegetation with vertical root system had the best effect on soil protection and slope *** results of this study have important guiding significance for prevention and control of soil erosion in the Tarim River basin,the restoration of riparian ecosystems,and the planning of water conservancy projects.

关键词： root-soil composites discrete element method direct shear test simulation Tarim River