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Surgical Treatment of Arrhythmogenic Right Ventricular Cardiomyopathy with Absent Pulmonary Valve

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Chinese Medical Journal 2017年第11期130卷 1383-1384页

作者： Hong-Chang Guo Chang-Wei Ren jiang dai Yong-Qiang Lai Department of Cardiac Surgery Beijing Anzhen Hospital Capital Medical University Beijing 100029 China

To the Editor： We described a successful treatment of a case diagnosed with arrhythmogenic right ventricular cardiomyopathy （ARVC） with absent pulmonary valve （APV）.

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Surgical Treatment of Double Outlet Right Ventricle with Absent Pulmonary Valve and Bronchiarctia

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Chinese Medical Journal 2017年第7期130卷 881-882页

作者： Hong-Chang Guo Chang-Wei Ren jiang dai Yong-Qiang Lai Department of Cardiac Surgery Beijing Anzhen Hospital Capital Medical University Beijing 100029 China

To the Editor：We report a successful treatment of a case diagnosed with double outlet right ventricle （DORV） with absent pulmonary valve （APV） and bronchiarctia.

关键词： Surgical Treatment Double Outlet Right Ventricle Absent Pulmonary Valve

Amplification of plasmid DNA bound on soil colloidal particles and clay minerals by the polymerase chain reaction

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Journal of Environmental Sciences 2007年第11期19卷 1326-1329页

作者： CAI Peng HUANG Qiao-yun LU Yan-du CHEN Wen-li jiang dai-hua LIANG Wei State Key Laboratory of Agricultural Microbiology Huazhong Agricultural University Wuhan 430070 China Key Laboratory of Subtropical Agricultural Resources a~ld Environment Huazhong Agricultural University Wuhan 430070 China

Polymerase chain reaction （PCR） was used to amplify a 600-base pair （bp） sequence of plasmid pGEX-2T DNA bound on soil colloidal particles from Brown soil （Alfisol） and Red soil （Ultisol）, and three different minerals （goethite, kaolinite, montmorillonite）. DNA bound on soil colloids, kaolinite, and montmorillonite was not amplified when the complexes were used directly but amplification occurred when the soil colloid or kaolinite-DNA complex was diluted, 10- and 20-fold. The montmorillonite-DNA complex required at least 100-fold dilution before amplification could be detected. DNA bound on goethite was amplified irrespective of whether the complex was used directly, or diluted 10- and 20-fold. The amplification of mineral-bound plasmid DNA by PCR is, therefore, markedly influenced by the type and concentration of minerals used. This information is of fundamental importance to soil molecular microbial ecology with particular reference to monitoring the fate of genetically engineered microorganisms and their recombinant DNA in soil environments.

关键词： adsorption amplification mineral PCR plasmid DNA soil colloid

不同营养水平调水对贡湖湾湖区水质及浮游藻类影响的模拟研究

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中国农村水利水电 2024年第8期 8-17页

作者：杨倩倩吴时强吴修锋戴江玉吕学研薛万云南京水利科学研究院江苏南京210029 江苏省环境监测中心江苏南京210036

为探究“引江济太”工程调水给受水湖区水体带来的生态效应,采用水生微宇宙模型进行为期11 d的室内模拟实验,以太湖贡湖湾湖区为受水水体,引入3组设定好的不同营养盐水平(贫营养水平O、中营养水平M、富营养水平E)的望虞河河水,研究在不... 详细信息

为探究“引江济太”工程调水给受水湖区水体带来的生态效应,采用水生微宇宙模型进行为期11 d的室内模拟实验,以太湖贡湖湾湖区为受水水体,引入3组设定好的不同营养盐水平(贫营养水平O、中营养水平M、富营养水平E)的望虞河河水,研究在不同营养盐水平调水影响下,受水水体水生态环境的动态响应过程。结果表明:整个实验过程中,中营养和贫营养调水组的水体TN、NO_(3)^(-)-N、NH4_(+)-N、TP、SRP、TOC含量下降明显,富营养调水组影响效果较中营养和贫营养调水组差;调水提高了受水水体生态系统的多样性和均匀度水平,硅藻等非蓝藻细胞密度增加,蓝藻细胞生长受到竞争胁迫,中营养和贫营养调水的影响作用效果好于富营养水平。RDA分析结果表明,受水水体的pH、DO、SiO_(3)^(2-)-Si、TDS、NO_(3)^(-)-N、SRP是本实验水体影响藻类群落结构的主要环境驱动因子。

关键词： “引江济太”工程贡湖湾水生微宇宙模型浮游藻类群落环境因子

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Isothermal Microcalorimetry:A Review of Applications in Soil and Environmental Sciences

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Pedosphere 2007年第2期17卷 137-145页

作者： RONG Xing-Min HUANG Qiao-Yun jiang dai-Hua CAI Peng LIANG Wei Key Laboratory of Subtropical Agricultural Resources and Environment Ministry of Agriculture Huazhong Agricultural University Wuhan 430070 （China）

Isothermal microcalorimetry provides thermodynamic and kinetic information on various reactions and processes and is thereby a powerful tool to elucidate their mechanisms. Certain improvement in isothermal microcalorimetry with regard to the studies on soil and environmental sciences is briefly described. This review mainly focuses on the use of microcalorimetry in the determination of soil microbial activity, monitoring the toxicity and biodegradation of soil organic pollutants, the risk evaluation of metals and metalloids, the heat effect of ion exchange and adsorption in soil, and environmental researches. Promising prospects for the applications of the technique in the field are also discussed.

关键词： environment isothermal microbial activity microcalorimetry soil

Microstructural Evolution of Gas Atomized Fe-25Cr-3.2C Alloy Powders

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Journal of Iron and Steel Research International 2011年第2期18卷 75-78页

作者： YANG Min SONG Chang-jiang dai Yong-xiang ZHU Liang LI Ke-feng ZHAI Qi-jie Shanghai Key Laboratory of Modern Metallurgy and Materials Processing Shanghai University Shanghai 200072 China

The microstructural evolution of the gas atomized Fe-25Cr-3.2C powders was investigated by using optical microscope, scanning electron microscope, and X-ray diffraction. The experimental results showed that the atomized Fe-25Cr-3.2C powders were mainly composed of austenite and （Fe,Cr）7 C3 carbide. Eutectic microstructure was developed in the larger particles, whereas dendritic microstrueture was obtained in the particles with diameter less than 38 μm. The reason for microstructure change should be the difference of nucleation undercooling for particles.

关键词： gas atomization Fe-Cr-C alloy microstructure undercooling rapid solidification

Remnants and fragments of the subducted paleo-Pacific plate:Constraints from geochemistry and geophysics

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Science China Earth Sciences 2024年第10期67卷 3041-3061页

作者： Xisheng XU Zhouchuan HUANG Dingsheng jiang Gang ZENG Li-Qun dai State Key Laboratory for Mineral Deposits Research School of Earth Sciences and EngineeringNanjing UniversityNanjing 210023China School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China

The subduction and rollback of the paleo-Pacific plate during Mesozoic time was the key engine for the evolution of the continental margin in eastern China. It led to lateral accretion of continental crust in Northeast China, lithospheric destruction beneath the North China Craton, and the generation of huge volumes of felsic magmatic rocks in South China. This had a profound influence on deep material cycles and the evolution of epigenetic environmental systems along the continental margin of East Asia. To fully understand the transformation of the dynamic mechanism during the subduction and rollback of the paleoPacific plate, we have attempted to trace the remnants and fragments of the subducted paleo-Pacific plate at great depths. Such remnants in both temporal and spatial dimensions can be tracked by using geochemical and geophysical approaches. Studies of the trace elements, Mg-Zn isotopes and Os-Nd-Hf-Pb-O isotopes in continental basalts from eastern China reveal a significant number of the remnants of subduction of the paleo-Pacific plate, and the initial subduction can be traced back to the Early Jurassic. Large-scale geophysical imaging unveils a multitude of high-velocity anomalies in the lower mantle of East ***, many high-velocity bodies, aptly referred to as “slab graveyards”, are nestled at the base of the lower mantle. Numerous isolated high-velocity anomalies are also present in the upper part of the lower mantle, creating conduits for the descent of the subducted slabs into the lower mantle. However, a resolution of the remnants for the subducted slabs within the lower mantle are quite low. Consequently, their impact on the lower mantle's dynamics is yet to be thoroughly investigated. Finally, the presently observed big mantle wedge(BMW) in East Asia has developed through subduction of the Pacific plate in the ***, following the rollback of the paleo-Pacific plate(began at ~145 Ma), a Cretaceous BMW system would also form above

关键词： Paleo-Pacific plate Big mantle wedge Late Mesozoic Remnants and fragments Geochemistry Geophysics

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Effects of negative index medium defect layers on the transmission properties of one-dimensional photonic crystal

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Optoelectronics Letters 2007年第2期3卷 144-147页

作者： XIANG Yuan-jiang dai Xiao-yu WEN Shuang-chun School of Computer and Communication Hunan University Changsha 410082 China

The photonic band gap structure of 1D photonic crystal with a negative index medium defect layer is studied by using the transfer matrix method. Investigations show that the introdufion of negative index medium defect layer and the increase of the negative index value will result in an extension of the band gap. Moreover, by increasing the negative index, the width of defect layer and the numbers of period photonic crystal, the width of defect modes will be narrowed, which is advantaged to obtain optical filters with narrow band. Finally, the effects of absorption on the properties of band gap and on defect modes have been discussed.

关键词：一维光子晶体传输性质负系数介质缺陷层带隙结构

湘西石漠化区湿地松-马褂木人工混交林林分结构及土壤理化性质研究

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广西植物 2024年第3期44卷 477-487页

作者：王迤翾朱宁华周光益袁星明江岱董妍妍颜润芝中南林业科技大学林学院长沙410004 中国林业科学研究院热带林业研究所广州510520 湖北省林业调查规划院武汉430070

为探究湘西石漠化区湿地松-马褂木人工混交林林分结构及土壤理化性质,该研究以湘西石漠化地区湿地松-马褂木人工针阔混交林为对象,利用植物群落学分析和野外取样检测的方法,分析林分结构和土壤理化性质,运用Winklemass 1.0计算林分空间... 详细信息

为探究湘西石漠化区湿地松-马褂木人工混交林林分结构及土壤理化性质,该研究以湘西石漠化地区湿地松-马褂木人工针阔混交林为对象,利用植物群落学分析和野外取样检测的方法,分析林分结构和土壤理化性质,运用Winklemass 1.0计算林分空间结构参数,并用三维离散随机变量分析了优势种的空间分布格局。结果表明:(1)林分内胸径(DBH)≥2 cm的林木株数为897 plants·hm^(-2),隶属于15科16属。主林层为湿地松,平均DBH为32.3 cm,重要值为44.2%;次林层为阔叶树,中幼龄林木居多,其中樟树、马褂木为优势树种,重要值分别为17.1%和13.2%。此外,还存在较多处于劣势生态位的天然更新种。(2)林木的水平分布格局偏向于随机分布(W=0.503);林分整体趋向于中庸偏劣势过渡的态势(U=0.505);种间隔离程度较高(M=0.689),林木混交状况良好。空间结构参数的三维离散随机变量表明,湿地松87.3%为优势和亚优势,马褂木41.7%为亚优势、26.9%为中庸态势,樟树23.5%为中庸态势、56.8%为劣势和绝对劣势。(3)林分土壤pH值趋于中性;与撂荒地相比,林分土壤的容重、持水量、孔隙度、有机碳、全钾、全氮、全磷等因子均明显改善,但整体而言,林分土壤仍然较为贫瘠,局部土壤紧实,保水能力差。综上表明,湿地松、马褂木作为先锋树种生长43年后,林分有向异龄林、强度混交林演替的趋势;林分内中幼龄阔叶树株数占比较大,近熟林出现断层,老龄针叶树占据优势生态区位,需抽针补阔、间针育阔,择伐劣势木,促使林分向阳生性阔叶树为主、中生性和耐阴性阔叶树为次的林分结构演替。该研究结果为湘西石漠化区的植被恢复、人工林结构优化和土壤改良提供了理论依据。

关键词：石漠化湿地松-马褂木人工混交林林分组成林分空间结构土壤理化性质