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CHEMICAL　INCORPORATING　PESTICIDES　***　OF　NEW　SUCCINIMIDO　ORGANOPHOSPHATES　AS　POTENTIAL　PESTICIDES

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Chinese Chemical Letters 1996年第7期7卷 609-610页

作者： er Le zang He Hui ZHENG Ping LI(Department of Applied Chemistry,China Agricultural University.Beijing 100094) BEIJING AGR UNIV DEPT APPL CHEMBEIJING 100094PEOPLES R CHINA

A series of succinimido-organophosphate analogueswas synthesized with maleic anhydride as starting material viamaleimide and its analogues as intermediates and characterized by IR,1HNMR and elementary analysis.

关键词： AS ORGANOPHOSPHATES INCORPORATING CHEMICAL

采用钛基非晶态钎料真空钎焊Ti65高温钛合金

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金属功能材料 2024年第1期31卷 126-131页

作者：梅俊祁焱徐立红赵磊臧岩钢铁研究总院有限公司北京100081

为了实现高温钛合金Ti65的高质量钎焊连接,采用真空快淬技术制备了以锆元素为变量的3种成分的钛基非晶态钎料,并根据3种钎料的最佳焊接工艺对Ti65进行了钎焊。采用扫描电子显微镜分析了3种钎料钎焊接头的微观组织与元素分布特征,并对比... 详细信息

为了实现高温钛合金Ti65的高质量钎焊连接,采用真空快淬技术制备了以锆元素为变量的3种成分的钛基非晶态钎料,并根据3种钎料的最佳焊接工艺对Ti65进行了钎焊。采用扫描电子显微镜分析了3种钎料钎焊接头的微观组织与元素分布特征,并对比分析了接头室温和650℃拉伸性能。试验结果表明:3种钎料表面质量良好,无孔洞,均能实现Ti65连接,接头主要为片层状魏氏组织,但是Ti-13Zr-Cu-Ni钎料,存在连续的化合物相。力学性能结果表明,3中钎料的室温和650℃高温拉伸性能均能达到母材拉伸强度的90%以上,Ti-13Zr-Cu-Ni钎料的室温拉伸强度略低,断裂主要发生在接头界面处,表现为脆性断裂,Ti-Cu-Ni钎料室温和650℃高温拉伸试样断裂均发生在母材,呈现出与基体等强的力学性能。

关键词：钛基非晶态钎料 Ti65 高温钛合金真空钎焊

Degradation of metabolites of benzo[a]pyrene by coupling Penicillium chrysogenum with KMnO_4

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Journal of Environmental Sciences 2007年第2期19卷 238-243页

作者： zang Shu-yan LI Pei-jun YU Xiao-cai SHI Kun ZHANG Hui CHEN Jing Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China Shenyang Institute of Chemical Technology Shenyang 110142 China Graduate School of Chinese Academy of Sciences Beijing 100039 China Environment Science and Engineering School Dalian Jiaotong University Dalian 116028 China Northeast University Shenyang 110006 China

Several main metabolites of benzo[a]pyrene （BaP） formed by Penicillium chrysogenum, Benzo[a]pyrene-1,6-quinone （BP 1,6- quinone）, trans-7,8-dihydroxy-7,8-dihydrobenzo[a]pyrene （BP 7,8-diol）, 3-hydroxybenzo[a]pyrene （3-OHBP）, were identified by high-performance liquid chromatography （HPLC）. The three metabolites were liable to be accumulated and were hardly further metabolized because of their toxicity to microorganisms. However, their further degradation was essential for the complete degradation of BaP. To enhance their degradation, two methods, degradation by coupling Penicillium chrysogenum with KMnO4 and degradation only by Penicillium chrysogenum, were compared; Meanwhile, the parameters of degradation in the superior method were optimized. The results showed that （1） the method of coupling Penicillium chrysogenum with KMnO4 was better and was the first method to be used in the degradation of BaP and its metabolites; （2） the metabolite, BP 1,6-quinone was the most liable to be accumulated in pure cultures; （3） the effect of degradation was the best when the concentration of KMnO4 in the cultures was 0.01% （w/v）, concentration of the three compounds was 5 mg/L and pH was 6.2. Based on the experimental results, a novel concept with regard to the bioremediation of BaP-contaminated environment was discussed, considering the influence on environmental toxicity of the accumulated metabolites.

关键词： BaP metabolites accumulated coupling potassium permanganate

库区洲滩生境改造方案优选——以王甫洲水库为例

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长江科学院院报 2024年第1期41卷 18-25页

作者：单敏尔周银军郭超刘鑫孙贵洲李志晶长江科学院河流研究所武汉430010 长江航道规划设计研究院武汉430040 长江航道勘察设计院(武汉)有限公司武汉430040

低水头梯级水库中流速较缓且水深较小而导致水草灾害发生是近些年水库管理中出现的新问题。为在发生伊乐藻灾害的王甫洲库区通过实施局部地形改造而塑造不利于伊乐藻生长的水文环境,并能对每一改造方案实施前后水动力强度的变化进行定... 详细信息

低水头梯级水库中流速较缓且水深较小而导致水草灾害发生是近些年水库管理中出现的新问题。为在发生伊乐藻灾害的王甫洲库区通过实施局部地形改造而塑造不利于伊乐藻生长的水文环境,并能对每一改造方案实施前后水动力强度的变化进行定量评价,同时综合考虑各改造方案在每一区域的水动力提升效果、对环境的影响和改造效益,选取各区域最优改造方案,提出了水动力提升率概念用以描述改造前后水动力强度的变化,并建立了基于熵权-TOPSIS的地形改造方案优选模型对各区域的每一方案进行评价优选,取得的主要结论如下:①在周期流量下,在区域A改造方案1水动力提升率仅为5.16%,远不及方案2和方案3的59.15%和63.62%;在区域B和区域C,方案1水动力强度出现减弱,方案2和方案3对区域B的水动力提升率分别为16.02%和20.19%,对区域C的水动力提升率分别为45.47%和51.99%,均较为接近。②熵权法得到3个区域各指标的权重均为改造效益>平均改造深度>水动力提升率。若综合考虑水动力提升率、对环境的影响和改造效益,TOPSIS模型计算的综合评价指数均为方案3>方案2>方案1,方案3均是每一区域综合评价下的最优改造方案。

关键词：库区洲滩生境改造水动力提升率熵权 TOPSIS模型伊乐藻王甫洲水库

Axial acoustic radiation force on an elastic spherical shell near an impedance boundary for zero-order quasi-Bessel-Gauss beam

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Chinese Physics B 2021年第4期30卷 305-318页

作者： Yu-Chen zang Wei-jun Lin Chang Su Peng-Fei Wu Institute of Acoustics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

Shell structures have increasingly widespread applications in biomedical ultrasound fields such as contrast agents and drug delivery,which requires the precise prediction of the acoustic radiation force under various circumstances to improve the system *** acoustic radiation force exerted by a zero-order quasi-Bessel-Gauss beam on an elastic spherical shell near an impedance boundary is theoretically and numerically studied in this *** means of the finite series method and the image theory,a zero-order quasi-Bessel-Gauss beam is expanded in terms of spherical harmonic functions,and the exact solution of the acoustic radiation force is derived based on the acoustic scattering *** acoustic radiation force function,which represents the radiation force per unit energy density and per unit cross-sectional surface,is especially *** simulated results for a polymethyl methacrylate shell and an aluminum shell are provided to illustrate the behavior of acoustic radiation force in this *** simulated results show the oscillatory property and the negative radiation force caused by the impedance *** appropriate relative thickness of the shell can generate sharp peaks for a polymethyl methacrylate *** radiation force can be obtained at small half-cone angles and the beam waist only affects the results at high *** that the quasi-Bessel-Gauss beam possesses both the energy focusing property and the non-diffracting advantage,this study is expected to be useful in the development of acoustic tweezers,contrast agent micro-shells,and drug delivery applications.

关键词： acoustic radiation force zero-order quasi-Bessel-Gauss beam impedance boundary elastic spherical shell

妊娠期糖尿病患者妊娠早期TyG指数与分娩小于胎龄儿的相关性

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复旦学报（医学版） 2024年第3期51卷 352-358,377页

作者：努尔比亚·西里甫李章燕臧淑妃古力斯坦·艾斯卡尔张瑞李悦徐鑫铭刘军复旦大学附属上海市第五人民医院内分泌科上海200240 喀什地区第二人民医院内分泌代谢科喀什844000 新疆医科大学研究生院乌鲁木齐830017

目的探讨妊娠期糖尿病(gestational diabetes mellitus,GDM)患者妊娠早期甘油三酯葡萄糖指数(the triglyceride-gluscose index,TyG指数)与分娩小于胎龄儿(small for gestational age infant,SGA)之间的关系。方法选取2018年1月至2023年6月复旦大学附属上海市第五人民医院和新疆喀什地区第二人民医院产科孕早期建档并符合纳入标准的孕妇1532例为研究对象,根据孕妇24~28周行口服葡萄糖耐量试验(oral glucose tolerance test,OGTT)结果,将其分为GDM组(754例)及非GDM组(778例)。GDM组患者根据新生儿体重,将其分为SGA组、大于胎龄儿(large for gestational age infant,LGA)组和适于胎龄儿(appropriate for gestational age infant,AGA)组。分析GDM患者分娩SGA的独立影响因素,采用Logistic回归模型分析TyG指数与发生SGA的相关性。绘制ROC曲线以分析妊娠早期TyG指数对GDM患者分娩SGA的预测价值。结果GDM患者SGA组TyG指数显著低于LGA组、AGA组及非GDM组(P<0.05);多因素Logistic回归分析结果显示,TyG指数与GDM患者分娩SGA的发生独立相关(P<0.05);ROC曲线结果显示,妊娠早期TyG指数对GDM患者分娩SGA具有较好的预测价值(AUC=0.821,95%CI:0.763~0.879,P<0.001)。结论GDM患者妊娠早期TyG指数与分娩SGA之间存在独立相关,对于GDM患者分娩SGA具有较好的预测价值。

关键词：妊娠期糖尿病(GDM) 妊娠早期甘油三酯葡萄糖(TyG指数) 小于胎龄儿(SGA)

Thermodynamics of Solvent Extraction of Rare and Scattered Metal-Indium with Diethylhexylmonothiophosphoric Acid

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Chemical Research in Chinese Universities 2006年第1期22卷 111-113页

作者： LIU Xing-zhi zang Shu-liang FANG Da-wei LI jun WANG Lu-ning Institute of Chemical Science and Engineering Liaoning University Shenyang 110036 P. R. China

The thermodynamics of extracting In（ Ⅲ） with diethylhexylmonothiophosphoric acid as an extractant in a H2SO4 system is reported. The equilibrium molalities of In^3＋ ions were measured at a high acidity and ionic strengths varying from 0. 1 to 2.0 mol/kg in an aqueous phase containing Na2SO4 as the supporting electrolyte. The values of the standard extraction constant K^0 at various temperatures were obtained by the methods of extrapolation and polynomial approximation. The equation lgK^0 = - 51.95 - 5.93 × 10^3/T ＋ 6. 15 × 10^-2 T was also obtained and the thermodynamic quantities for the extraction process were calculated.

关键词： Extraction Indium Diethylhexylmonothiophosphoric acid Thermodynamics

Development of Highly Efficient Transformation System of Yeast-Like Conidia of Tremella fuciformis

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Agricultural Sciences in China 2009年第3期8卷 268-275页

作者： GUO Li-qiong LIU er-xian WANG Jie LIN jun-fang Department of Bioengineering College of Food Science South China Agricultural University Guangzhou 510640 P.R. China Institute of Biomass Research South China Agricultural University Guangzhou 510640 P.R.China

Tremellafuciformis is one of higher basidiomycetes. Its basidiospore can reproduce yeast-like conidia, which is also called the blastospore by budding. The yeast-like conidia of T. fuciformis is monokaryotic and easy to culture by submerged fermentation similar to yeast. Thus, it is a good recipient cell for exogenous gene expression. In this study, the expression plasmid pAN7-1 （containing promoter gpd-An derived from Aspergillus nidulans and selectable marker gene hph conferring resistance to hygromycin B） and plasmid pLg-hph （containing promoter gpd-Le derived from Lentinula edodes and selectable marker gene hph） were transformed into the yeast-like conidia of T. fuciformis by PEG-mediated protoplast transformation, respectively. The primary putative transformants were selected by the sandwich screening method with the selective medium containing 50 μg mL^-1 hygromycin. The putative transformants were obtained from the primary putative transformants transferred on PDSA plates containing 100 μg mL^-1 hygromycin for second round selection. Experimental results showed that the optimal concentration of PEG 4000 for mediating protoplast transformation was 25%. PCR and Southern blotting confirmed that the selectable marker gene hph was integrated effectively into the genome of the yeast-like conidia of T. fuciformis with plasmid pLg-hph transformation. Its transformation efficiency was 110 transformants per μg DNA, and the hph gene was integrated into the genome of some yeast-like conidia with plasmid pAN7-1 transformation. However, its transformation efficiency was only 9 transformants per μg DNA. The presence of hph gene in the genome of transformants after 5 generations of sub- culturing on PDSB medium was confirmed by PCR, suggesting that the foreign gene hph was stable during subculture.

关键词： Tremellafuciformis PEG-mediated protoplast transformation yeast-like conidia hph gene promoter

Hollow-in-hollow carbon spheres with hollow foam-like cores for lithium-sulfur batteries

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Nano Research 2015年第8期8卷 2663-2675页

作者： jun zang Taihua An Yajie Dong Xiaoliang Fang Mingsen Zheng Quanfeng Dong Nanfeng Zheng Pen-Tung Sah Institute of Micro-Nano Science and Technology Xiamen University Xiamen 361005 China State Key Laboratory for Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy Materials and Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China

Lithium-sulfur batteries have attracted increasing attention because of their high theoretical capadty. Using sulfur/carbon composites as the cathode materials has been demonstrated as an effective strategy to optimize sulfur utilization and enhance cycle stability as well. In this work hollow-in-hollow carbon spheres with hollow foam-like cores （HCSF@C） are prepared to improve both capability and cycling stability of lithium-sulfur batteries. With high surface area and large pore volumes, the loading of sulfur in HCSF@C reaches up to 70 wt.%. In the resulting S/HCSF@C composites, the outer carbon shell serves as an effective protection layer to trap the soluble polysulfide intermediates derived from the inner component. Consequently, the S/HCSF@C cathode retains a high capacity of 780 mAh/g after 300 cycles at a high charge/discharge rate of 1 A/g.

关键词： hollow spheres porous carbon sulfur/carbon cathode lithium-sulfur batteries