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Polychlorinated biphenyls and omega-3 fatty acid exposure from fish consumption,and thyroid cancer among New York anglers

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Journal of environmental Sciences 2016年第3期28卷 270-277页

作者： Alyson Haslam Sara Wagner Robb Matthew R.Bonner William Lindblad Joey Allegra Ye Shen John e.Vena Department of epidemiology and Biostatistics College of Public HealthUniversity of Georgia Department of epidemiology and environmental Health School of Public Health and Health ProfessionsUniversity of Buffalo Department of Public Health Sciences School of MedicineMedical University of South Carolina

Fish from the Great Lakes contain polychlorinated biphenyls（PCBs）which have been shown to disrupt endocrine function and mimic thyroid hormones,but they also contain beneficial omega-3 fatty acids that may offer protection against endocrine *** purpose of this study was to examine the effects of Lake Ontario fish consumption and the estimated consumption of PCBs and omega-3 fatty acids on the risk of thyroid cancer in a group of sport *** from the New York State Angler Cohort Study were followed for cancer incidence from 1991–***-seven cases of incident thyroid cancer and 108 controls were included in the *** estimated fish consumption,estimated omega-3 fatty acid consumption,and estimated PCB consumption from Lake Ontario fish were examined for an association with the incidence of thyroid cancer,while matching on sex,and controlling for age and smoking *** from logistic regression indicate no significant associations between fish consumption,short-term estimated omega-3 fatty acids,or estimated PCB consumption from Great Lakes fish and the development of thyroid cancer,but it was suggested that long-term omega-3 fatty acid from Great Lakes fish may be protective of the development of thyroid *** conclusion,fish consumption,with the possible concomitant PCBs,from the Great Lakes does not appear to increase the risk of thyroid cancer in New York *** research is needed in order to separate the individual health effects of PCBs from omega-3 fatty acids contained within the fish.

关键词： Polychlorinated biphenyls Omega-3 fatty acids Thyroid cancer Lake Ontario Fish consumption

Trichlorozirconium η~2-Hydrazonides： Synthesis, Characterization and Their Catalytic Behavior toward ethylene Polymerization

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Chinese Journal of Polymer Science 2016年第3期34卷 390-398页

作者： Xin-e Duan Qi-feng Xing Zhen-ming Dong Jian-bin Chao Sheng-di Bai 刘滇生孙文华 Institute of Applied Chemistry Shanxi Untverstty Taiyuan 030006 China School of Chemistry and Chemical engineering Shanxi University Taiyuan 030006 China Key Laboratory of engineering Plastics and Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China

The trichlorozirconium η~2-hydrazonides（R=H, A; R=CH_3, B） were synthesized through the finely controlled stoichiometrical reactions of anhydrous zirconium tetrachloride with the lithium salt of either 1-（furan-2-ylmethylene）-2-phenylhydrazonide or 1-（furan-2-ylethylidene）-2-phenyl hydrazonide in the solvent tetrahydrofuran（THF）, respectively. These complexes were highly sensitive to air and moisture due to solely using less bulky ligand of hydrazonides. The molecular structures of the title complexes, determined by means of single crystal X-ray diffraction, were found to be the distorted pentagonal bipyramid geometry around zirconium atom, with three chlorides and the hydrazonato ligand acting as the η~2-coordination mode as well as two incorporated THF molecules. Upon activation with either methylaluminoxane（MAO） or modified methylaluminoxane（MMAO）, both complexes A and B exhibited catalytic activities toward ethylene polymerization, producing polyethylenes with ultra-high molecular weights.

关键词： Titanium complexes Phenylhydrazonide ethylene polymerization Ultra-high molecular weight polyethylene

Angular dependence of nanoparticle generation in the matrix assembly cluster source

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Nano Research 2019年第12期12卷 3069-3074页

作者： Maria Chiara Spadaro Junlei Zhao William D.Terry Jian Liu Feng Yin Flyura Djurabekova Richard e.Palmer College of engineering Swansea UniversityBay CampusFabian WaySwansea SAI 8ENUK Department of Physics and Helsinki Institute of Physics University of HelsinkiP.O.Box43f FIN-00014HelsinkiFinland Nanoscale Physics Research Laboratory School of Physics and AstronomyUniversity of BirminghamBirmingham B152TTUK National Center for electron Microscopy in Beijing Key Laboratory cf Advanced Materials(MOE)The State Key Laboratory of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China School of Physics and Information Technology Shaanxi Normal UniversityXian 710062China Catalan Institute of Nanoscience and Nanotechnology(ICN2) CSIC and BISTCampus UABBellaterra08193 BarcelonaCataloniaSpain

The matrix assembly cluster source(MACS)represents a bridge between conventional instruments for cluster beam deposition(CBD)and thelevel of industrial *** method is based on Ar^+ion sputtering of a pre-condensed Ar-M matrix(where M,is typically a metal such asAg).each Ar^+ion produces a collision cascade and thus the formation of metal clusters is in the matrix,which are then sputtered *** wepresent an experimental and computational investigation of the cluster emission process,specifically its dependence on the Ar^+ion angle of in cidence and the cluster emission *** find the in cide nee angle strongly in flue nces the emerging cluster flux,which is assigned to thespatial location of the deposited primary ion energy relative to the cluster into the *** also found an approximately constant anglebetween the incident ion beam and the peak in the emitted cluster distribution,with value between 99°and 109°.

关键词： cluster beam deposition scale-up nano particles silver ligand-free green synthesis

Greenhouse gas emissions from different pig manure management techniques： a critical analysis

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Frontiers of environmental Science & engineering 2017年第3期11卷 3-18页

作者： Conor Dennehy Peadar G. Lawlor Yan Jiang Gillian e. Gardiner Sihuang Xie Long D Nghiem Xinmin Zhan Civil engineering College of Engineering and lnformatics National University of Ireland Galway Ireland Teagasc Pig Development Department Animal and Grassland Research and Innovation Centre Fermoy Ireland Department of Science Waterford Institute of Technology Waterford Ireland Strategic Water Infrastructure Laboratory University of Wollongong Wollongong NSW 2522 Australia

Manure management is the primary source of greenhouse gas （GHG） emissions from pig farming, which in turn accounts for 18% of the total global GHG emissions from the livestock industry. In this review, GHG emissions （N20 and CH4 emissions in particular） from individual pig manure （PGM） management practices （european practises in particular） are systematically analyzed and discussed. These manure management practices include manure storage, land application, solid/liquid separation, anaerobic digestion, composting and aerobic wastewater treatment. The potential reduction in net GHG emissions by changing and optimising these techniques is assessed. This review also identifies key research gaps in the literature including the effect of straw covering of liquid PGM storages, the effect of solid/liquid separation, and the effect of dry anaerobic digestion on net GHG emissions from PGM management. In addition to identifying these research gaps, several recommendations including the need to standardize units used to report GHG emissions, to account ~br indirect N20 emissions, and to include a broader research scope by conducting detailed life cycle assessment are also discussed. Overall, anaerobic digestion and compositing to liquid and solid fractions are best PGM management practices with respect to their high GHG mitigation potential.

关键词： CH4N2O Storage Anaerobic digestion Composting Separation

Relationships between the Global General Circulation and the Indian Summer Monsoon

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Advances in Atmospheric Sciences 1991年第2期8卷 137-148页

作者： M. Sankar-Rao V. N. Lvkossov e. M. Volodin A. e. Nikitin A. I. Degtiarev Kusuma G. Rao Department of Aerospace engineering and Centre for Atmospheric Sciences Indian Institute of Science Bangalore 560012 INDIADepartment of Numerical Mathematics USSR Academy of Sciences Moscow USSRDepartment of Numerical Mathematics USSR Academy of Sciences Moscow USSRHydrometeorological Centre Moscow USSRHydrometeorological Centre Moscow USSRCentre for Atmospheric Sciences Indian Institute of Science Bangalore 560012 INDIA

The relationships between the global general circulation and the Indian monsoon during active and break phases are investigated with the help of FGGe IIIb *** was found that the ultralong wave component positive and negative height anomalies over Tibet are associated with active and break monsoon phases respectively. This ultralong wave component has significant effect even upto 22°N over the Indian region which is the monsoon trough region. During a monsoon break, the general circulation was found to be more turbulent in the sense that more waves become *** was observed that during a break, blocking prevails over the Siberian region and cold air advection takes place toward Indian region from Siberian region depressing the temperatures over the Indian region by about 1℃. During the break, the Indian region gets connected with higher latitudes by the south winds blowing from polar Soviet regions to the Indian region. From active to break phase the zonal component weakens by about 25% from Indian ocean area right upto Alaskan region, along the east coast of Asia.

关键词： over In Mean

Role of Ordering energy in Formation of Grain Structure and Special Boundaries Spectrum in Ordered Alloys with L12 Superstructure

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Journal of Materials Science & Technology 2000年第6期16卷 585-590页

作者： O.B.Perevalova (Institute of Strength Physics and Material Science, Russian Academy of Sciences, Siberian Branch pr. Academicheskii, 2/1, 634048, Tomsk, Russia) e. V.Konovalova, N.A.Koneva and e. VKozlov (State University of Architecture and Building, Sol Inst. of Strength Phys. Tomsk 634048 Russian Federation

It was revealed that an average energy of special boundaries is proportional to APB energy in the alloys with the L12 superstructure. This fact proves the appearance of the GAPBs in the planes of location of special boundaries in coincidence sites of ordered alloys. It was determined that the more energy of special boundaries in ordered alloys, the more energy of complex stacking fault. There is a correlation between the distribution of special boundaries as a function its relative energy and ordering energy: the more ordering energy, the more degree of washed away of distribution. The correlation between average relative energy of special boundaries and ordering energy was detected: the more ordering energy, the more average energy of special boundaries. The reverse dependence between ordering energy and average number of special boundaries in grains limited by boundaries of general type was discovered.

关键词： Role of Ordering energy in Formation of Grain Structure and Special Boundaries Spectrum in Ordered Alloys with L12 Superstructure

基于蛋白核小球藻响应预测土壤铅、锌和镉浓度

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地球与环境 2024年第3期52卷 321-329页

作者：曾维锐刘洁雪黄娥陈燕玲莫凌云梁延鹏曾鸿鹄邓振贵覃礼堂桂林理工大学环境科学与工程学院广西桂林541004 桂林理工大学广西环境污染控制理论与技术重点实验室广西桂林541004 桂林理工大学岩溶地区水污染控制与用水安全保障协同创新中心广西桂林541004 自然资源部南方石山地区矿山地质环境修复工程技术创新中心南宁530022 恒晟水环境治理股份有限公司广西桂林541199

基于绿藻响应预测土壤重金属浓度具有时间短、成本低的优点。本研究以Pb、Zn、Cd及其混合物污染土壤为研究对象,以蛋白核小球藻作为受试生物,通过土壤浸提液暴露的响应预测单一重金属及其混合物的浓度。研究结果表明,不同浓度Pb、Zn、C... 详细信息

基于绿藻响应预测土壤重金属浓度具有时间短、成本低的优点。本研究以Pb、Zn、Cd及其混合物污染土壤为研究对象,以蛋白核小球藻作为受试生物,通过土壤浸提液暴露的响应预测单一重金属及其混合物的浓度。研究结果表明,不同浓度Pb、Zn、Cd及其混合物污染土壤浸提液对蛋白核小球藻均具有平滑且单调的浓度-效应曲线(concentration-response curves,CRCs);在暴露时间为96~168 h,重金属及其二元、三元混合物浓度大小与蛋白核小球藻的生长抑制率成正比。将未测试绿藻响应的重金属及其混合物污染土壤浸提液进行绿藻暴露实验,每个重金属及其混合物设置2~3个浓度点,测试其对蛋白核小球藻的毒性响应,将毒性响应值分别代入单一重金属及其混合物的CRCs,预测重金属及其混合物的浓度。结果表明96 h暴露数据可准确预测土壤Pb、Zn、Cd单一及混合污染土壤。因此,基于蛋白核小球藻响应预测土壤铅、锌和镉浓度具有可行性,且96 h的绿藻暴露数据更适用于预测。

关键词：蛋白核小球藻重金属土壤污染评价

发展融合交叉的数理教育,厚植创新的理科思维

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大学物理 2024年第8期43卷 35-41页

作者：杨菊娥王之恒龙文辉宋伦继兰州大学数学与统计学院甘肃兰州730000 兰州大学核科学与技术学院甘肃兰州730000

随着科教兴国战略的实施,培养高水平科研和应用人才的迫切需求对基础数理教育的改革和发展提出了更高要求.本文围绕厚植创新的理科思维,以物理类专业理论力学中刚体运动的分析和描述为例,结合线性代数中矢量和线性空间等抽象概念所蕴含... 详细信息

随着科教兴国战略的实施,培养高水平科研和应用人才的迫切需求对基础数理教育的改革和发展提出了更高要求.本文围绕厚植创新的理科思维,以物理类专业理论力学中刚体运动的分析和描述为例,结合线性代数中矢量和线性空间等抽象概念所蕴含的空间思维,展示并分析了如何在基础理论课程中开展交叉融合的数理教育.结合理论力学和线性代数的教学实践,详实分析了当前基础数理教育中存在的问题,探索了交叉融合的数理教育改革,包括教学内容和考核方式、线上和线下的课程建设等.在此基础上,建议深入实施交叉融合的教学理念,提倡引导学生深入理解基本的数理概念和原理,转变其被动式接受的思维习惯,切实激发其专业兴趣和原始创新能力的自我培养意识.

关键词：刚体线性变换交叉融合的数理教育理科思维

促胰岛素抵抗膳食指数与胃癌前病变患病风险的病例对照研究

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中华疾病控制杂志 2024年第8期28卷 944-949页

作者：舒幸李彬姜皓琪汤进芝石嫦娥赵奇红杨万水唐敏胡安拉安徽医科大学公共卫生学院营养与食品卫生学系安徽医科大学第一附属医院消化内科安徽省公共卫生临床中心消化内科兼临床营养科

目的探讨促胰岛素抵抗膳食指数(empirical dietary index for insulin resistance, eDIR)与胃癌前病变(gastric precancerous lesions, GPL)患病风险的关系，为GPL人群的膳食防控提供流行病学依据。方法 2021年9月―2022年7月在安徽医... 详细信息

目的探讨促胰岛素抵抗膳食指数(empirical dietary index for insulin resistance, eDIR)与胃癌前病变(gastric precancerous lesions, GPL)患病风险的关系，为GPL人群的膳食防控提供流行病学依据。方法 2021年9月―2022年7月在安徽医科大学第一附属医院招募102例GPL患者作为病例组，204例非萎缩性胃炎患者(non-atrophic gastritis, NAG)或正常胃黏膜者作为对照组，进行非匹配病例对照研究。结果病例组eDIR评分高于对照组，且差异有统计学意义(Z=-2.141,P=0.032);与对照组相比，病例组的精谷物摄入量更高(Z=-2.475,P=0.013);在对混杂因素进行调整后，较高的eDIR[Quartile 2:OR(95%CI):4.36(1.61～11.84),P=0.003]与GPL风险的增加呈正相关。结论较高的eDIR评分和高精谷物摄入会增加GPL患病风险。

关键词：促胰岛素抵抗膳食指数胰岛素抵抗胃癌前病变病例对照研究精谷物