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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

Photon-Induced Production of Mirror Quarks from LHT Model at LHC

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Communications in Theoretical Physics 2009年第12期52卷 1041-1048页

作者： YUE chong-Xing LIU jin-Yan DING Li LIU Wei MA Wei Department of Physics Liaoning Normal University Dalian 116029 China

The photon-induced processes at the LHC provide clean experimental conditions due to absence of theproton remnants,which might produce complementary and interesting results for tests of the standard model and forsearching of new *** the context of the littlest Higgs model with T-parity,we consider the photon-inducedproduction of the mirror quarks at the *** cross sections for various production channels are calculated and asimply phenomenological analysis is performed by assuming leptonic decays.

关键词： the mirror fermions the LHT model the LHC

Iron Deficiency-induced Increase of Root Branching Contributes to the Enhanced Root Ferric Chelate Reductase Activity

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Journal of Integrative Plant Biology 2008年第12期50卷 1557-1562页

作者： chong-Wei jin Wei-Wei Chen Zhi-Bin Meng Shao-Jian Zheng Ministry of Education Key Laboratory of Environment Remediation and Ecosystem Health College of Environmental and Resource Science Zhejiang University Hangzhou 310029 China State Key Laboratory of Plant Biochemistry and Physiology College of Life Sciences Zhejiang University Hangzhou 310058 China

In various plant species, Fe deficiency increases lateral root branching. However, whether this morphological alteration contributes to the Fe deficiency-induced physiological responses still remains to be demonstrated. In the present research, we demonstrated that the lateral root development of red clover （Trifolium pretense L.） was significantly enhanced by Fe deficient treatment, and the total lateral root number correlated well with the Fe deficiency-induced ferric chelate reductase （FCR） activity. By analyzing the results from Dasgan et al. （2002）, we also found that although the two tomato genotypes line227/1 （P1） and Roza （P2） and their reciprocal F1 hybrid lines （＂P1 × P2＂ and ＂P2 ×PI＂） were cultured under two different lower Fe conditions （10^-6 and 10^-7 M FeEDDHA）, their FCR activities are significantly correlated with the lateral root number. More interestingly, the -Fe chlorosis tolerant ability of these four tomato lines displays similar trends with the lateral root density. Taking these results together, it was proposed that the Fe deficiency-induced increases of the lateral root should play an important role in resistance to Fe deficiency, which may act as harnesses of a useful trait for the selection and breeding of more Fe-efficient crops among the genotypes that have evolved a Fe deficiency-induced Fe uptake system.

关键词： Fe deficiency ferric chelate reductase lateral root red clover tomato.

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 increased intra-abdominal pressure and decompressive laparotomy on aerated lung volume distribution

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第5期11卷 378-385页

作者： Jian-cang ZHOU Qiu-ping XU Kong-han PAN Chen MAO chong-wu jin Department of Critical Care Medicine Sir Run Run Shaw Hospital School of Medicine Zhejiang University Hangzhou 310016 China Department of Radiology Sir Run Run Shaw Hospital School of Medicine Zhejiang University Hangzhou 310016 China

Increased intra-abdominal pressure(IAP) is common in intensive care patients,affecting aerated lung volume *** current study deals with the effect of increased IAP and decompressive laparotomy on aerated lung volume *** serial whole-lung computed tomography scans of 16 patients with increased IAP were retrospectively analyzed between July 2006 and July 2008 and compared to *** IAP increased from(12.1±2.3) mmHg on admission to(25.2±3.6) mmHg(P<0.01) before decompressive laparotomy and decreased to(14.7±2.8) mmHg after decompressive *** time from admission to decompressive laparotomy and length of intensive-care unit(ICU) stay were 26 h and 16.2 d,*** percentage of normally aerated lung volume on admission was significantly lower than that of controls(P<0.01).Prior to decompressive laparotomy,the total lung volume and percentage of normally aerated lung were significantly less in patients compared to controls(P<0.01),and the absolute volume of non-aerated lung and percentage of non-aerated lung were significantly higher in patients(P<0.01).Peak inspiratory pressure,partial pressure of carbon dioxide in arterial blood,and central venous pressure were higher in patients,while the ratio of partial pressure of arterial O2 to the fraction of inspired O2(PaO2/FIO2) was decreased relative to controls prior to *** approximately 1.8 cm greater cranial displacement of the diaphragm in patients versus controls was observed before *** sagittal diameter of the lung at the T6 level was significantly increased compared to controls on admission(P<0.01).After laparotomy,the volume and percentage of non-aerated lung decreased significantly while the percentage of normally aerated lung volume increased significantly(P<0.01).In conclusion,increased IAP decreases total lung volume while increasing non-aerated lung *** laparotomy is associated with resolution of these effects on lung volumes.

关键词： Intra-abdominal pressure Intra-abdominal hypertension Lung volume Decompressive laparotomy Computed tomography

Pretreatment with H_2O_2 Alleviates Aluminum-induced Oxidative Stress in Wheat Seedlings

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Journal of Integrative Plant Biology 2011年第1期53卷 44-53页

作者： Fang Jie Xu chong Wei jin Wen jing Liu Yong Song Zhang Xian Yong Lin Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health College of Environmental & Resource Sciences Zhejiang University Hangzhou 310029 China Zhejiang Key Laboratory of Subtropical Soil Science and Plant Nutrition College of Environmental & Resources Science Zhejiang University Hangzhou 310029 China

Hydrogen peroxide （H2O2） is a key reactive oxygen species （ROS） in signal transduction pathways leading to activation of plant defenses against biotic and abiotic stresses. In this study, we investigated the effects of H2O2 pretreatment on aluminum （AI） induced antioxidant responses in root tips of two wheat （Triticum aestivum L.） genotypes, Yangmai-5 （AI-sensitive） and Jian-864 （AI-tolerant）. AI increased accumulation of H2O2 and O2^- leading to more predominant lipid peroxidation, programmed cell death and root elongation inhibition in Yangmai-5 than in Jian-864. However, H2O2 pretreatment alleviated AI- induced deleterious effects in both genotypes. Under AI stress, H2O2 pretreatment increased the activities of superoxide dismutase, catalase, peroxidase, ascorbate peroxidase and monodehydroascorbate reductase, glutathione reductase and glutathione peroxidase as well as the levels of ascorbate and glutathione more significantly in Yangmai-5 than in Jian-864. Furthermore, H2O2 pretreatment also in- creased the total antioxidant capacity evaluated as the 2, 2-diphenyl-l-picrylhydrazyl-radical scavenging activity and the ferric reducing/antioxidant power more significantly in Yangmai-5 than in Jian-864. Therefore, we conclude that H2O2 pretreatment improves wheat AI acclimation during subsequent AI exposure by enhancing the antioxidant defense capacity, which prevents ROS accumulation, and that the enhancement is greater in the AI-sensitive genotype than in the AI-tolerant genotype.

关键词： Peroxides Oxidation Beers Aluminium Tolerance Genotypes Stress Antioxidants Glutathione reductase Roots