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室外机构箱凝露现象的分析及解决方案

电力系统装备 2017年第11期 136-137页

作者：刘建宏赵剑张川刘诚张志勋胥达李瑞翔李昱仲泽坤云南电网有限责任公司昆明供电局昆明650031

通过对室外机构箱凝露现象的分析和措施进行改进,减少了从室外电缆管线槽进入机构箱内的潮气,极大的改善了机构箱内元件的运行条件,有效缓解了当前严重危及设备安全的潮气问题,延长设备寿命,降低设备故障的发生概率.

关键词：室外电缆管线槽改进

Epidemiology and trend analysis on malignant mesothelioma in China

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Chinese Journal of Cancer Research 2017年第4期29卷 361-368页

作者： Jun Zhao Tingting Zuo Rongshou Zheng Siwei zhang Hongmei Zeng Changfa Xia zhixun Yang Wanqing Chen National Cancer Center/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100021 China

Objective： Population-based cancer registration data were used to analyze the epidemiology and trend of malignant mesothelioma in China, and the result would provide basic data for its prevention and control. Methods： Malignant mesothelioma data in 2013 were retrieved from the database of National Cancer Registry. Malignant mesothelioma incidence and mortality were estimated using age-specific rate by urban/rural and gender according to the national population in 2013. Malignant mesothelioma data from 22 cancer registries were used for trend analysis during 2000-2013. Results： It is estimated that there were 2,041 new malignant mesothelioma cases and 1,659 malignant mesothelioma deaths occurred in 2013. The crude incidence rate in China were 1.50/106 （males 1.67/106, females 1.32/106）, age-standardized incidence rates by Chinese standard population （ASIRC） and by world standard population （ASIRW） were 1.03/106 and 1.02/106, respectively. The crude mortality rate in China was 1.22/106 （males 1.67/106, females 1.32/106）, age-standardized mortality rates by Chinese standard population （ASMRC） and by world standard population （ASMRW） were 0.83/106 and 0.81/106, respectively. There was an increasing trend of incidence rate for malignant mesothelioma in registration areas of China during 2000-2013 with annual percentage change （APC） of 2.5% [95% confidence interval （95% CI）： 0.6%--4.5%]. After age standardization, no significant differences were observed. No matter for crude mortality rates or age-standardized mortality rates, no significant differences were observed during 2000-2013. Conclusions： Malignant mesothelioma is the major occupational and environmental neoplasm associated with asbestos exposure. The increasing incidence trend suggests that more attention should be paid on this disease.

关键词： Malignant mesothelioma incidence mortality trend cancer registry

Cancer incidence and mortality in China in 2013：an analysis based on urbanization level

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Chinese Journal of Cancer Research 2017年第1期29卷 1-10页

作者： Wanqing Chen Rongshou Zheng Siwei zhang Hongmei Zeng Tingting Zuo Changfa Xia zhixun Yang Jie He National Central Cancer Registry National Cancer Center/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100021 China

Objective： To explore the cancer patterns in areas with different urbanization rates（URR） in China with data from 255 population-based cancer registries in 2013, collected by the National Central Cancer Registry（NCCR）.Methods： There were 347 cancer registries submitted cancer incidence and deaths occurred in 2013 to *** those data were checked and evaluated based on the NCCR criteria of data quality, and qualified data from 255 registries were used for this analysis. According to the proportion of non-agricultural population, we divided cities/counties into 3 levels： high level, with URR equal to 70% and higher; median level, with URR between 30%and 70%; and low level, with URR equal to 30% and less. Cancer incidences and mortalities were calculated,stratified by gender and age groups in different areas. The national population of Fifth Census in 2000 and Segi＇s population were applied for age-standardized ***： Qualified 255 cancer registries covered 226,494,490 populations. The percentage of cases morphologically verified（MV%） and death certificate-only cases（DCO%） were 68.04% and 1.74%, respectively,and the mortality to incidence rate ratio（M/I） was 0.62. A total of 644,487 new cancer cases and 399,275 cancer deaths from the 255 cancer registries were submitted to NCCR in 2013. The incidence rate was 284.55/100,000（314.06/100,000 in males, 254.19/100,000 in females）, and the age-standardized incidence rates by Chinese standard population（ASIRC） and by world standard population（ASIRW） were 190.10/100,000 and 186.24/100,000 with the cumulative incidence rate（0–74 age years old） of 21.60%. The cancer mortality was 176.28/100,000（219.03/100,000 in males, 132.30/100,000 in females）, and the age-standardized mortality rates by Chinese standard population（ASMRC） and by world standard population（ASMRW） were 110.91/100,000 and 109.92/100,000, and the cumulative mortality rate（0–74 age years old） was 12.43%. Low urbanization areas were high in crude cancer in

关键词： Cancer incidence mortality epidemiology urbanization China

Prediction of Petroleum Prospect in the South Yellow Sea Basin Using Satellite Remote Sensing

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Marine Science Bulletin 2007年第2期9卷 82-89页

作者：龚建明陈建文梁杰张志珣刘闯卢振权黄福林中国海洋大学山东青岛266003 青岛海洋地质研究所山东青岛266071 中科院地理科学与资源研究所北京100101 中国地质科学院矿产资源研究所北京100037

Using satellite remote sensing to measure the sea surface temperature of the East China Sea Shelf Basin can serve the purpose of predicting the petroleum prospect in the South Yellow Sea Basin. The satellite thermal infrared temperature anomaly area always repeats in the same position as the proved oil prospect area in the East China Sea Shelf Basin, and coincides well with both the CH4 content curve at the water-atmosphere interface and the seafloor geochemical anomaly. The sea surface temperature anomaly areas of the South Yellow Sea Basin in the satellite remote sensing image go banded along 123030, in the S-N direction, and naturally follow the aeromagnetically interpreted eastern nose-type uplift that shows a S-N strike. The north and south ends of the eastern nose are considered as good oil prospect areas because temperature anomaly often occurs there.

关键词： temperature anomaly satellite remote sensing oil prospect the South Yellow Sea

Trends in geographical disparities for cervical cancer mortality in China from 1973 to 2013:a subnational spatio-temporal study

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Chinese Journal of Cancer Research 2017年第6期29卷 487-495页

作者： Changfa Xia Chao Ding Rongshou Zheng Siwei zhang Hongmei Zeng Jinfeng Wang Yilan Liao Ningxu zhang zhixun Yang Wanqing Chen National Cancer Center/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences

Objective： This study was designed to explore the time trends in geographical variations of cervical cancer mortality in China's Mainland over the period 1973 to 2013, to provide subnational spatio-temporal patterns for targeted promotion of human papillomavirus vaccine in China. Methods： Data were extracted from three national retrospective death surveys and cancer registry. The rate ratio （RR） was estimated for the aggregated data for seven geographical regions using generalized linear models to evaluate time trends in geographical disparities of cervical cancer mortality. Results： There was a significant decrease in cervical cancer mortality in China from 1973-1975 to 2004-2005, but leveled off thereafter to 2011-2013. Compared to the period 1973-1975 the RR for the three last time periods were 0.33 [95% confidence interval （95% CI）： 0.30-0.37] for 1990-1992, 0.21 （95% CI： 0.19-0.24） for 2004-2005 and 0.24 （95% CI： 0.22-0.26） for 2011-2013. Females living in the Northwest China and Central China have a high risk of mortality from cervical cancer compared to the nationwide, with the RR being 2.09 （95% CI： 1.83-2.38） and 1.26 （95% CI： t.11-1.44） respectively, while the RRs for South China, Northeast China and Southwest China were below 1.00, indicating the lower death risk. Despite the mortality rate had increased slightly from 2004 to 2013, there was an encouraging sign that the geographical disparities in cervical cancer mortality had gradually narrowed over time across China. Conclusions： Although cervical cancer mortality in China has reduced to very low levels, the high risk of cervical cancer in Northwest China and Central China is still noteworthy. Public health policies including the promotion of vaccine should be targeted to further reduction of geographical disparities in cervical cancer mortality.

关键词： Cervical cancer mortality spado-temporal epidemiology China

济阳坳陷桩海地区古潜山油藏控制规律及有利区预测

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断块油气田 2012年第2期19卷 167-171页

作者：侯方辉李三忠张训华张志珣温珍河李日辉郭兴伟中国海洋大学山东青岛266003 国土资源部青岛海洋地质研究所海洋油气与环境地质重点实验室山东青岛266071

为研究济阳坳陷桩海地区的古潜山油藏控制规律,通过大量二维地震剖面解释,绘制了研究区中、古生界沉积残留厚度图,编制了基底构造纲要与油藏分布图。研究表明,12条大断裂控制了本区大地构造格局,并控制了中、古生界的沉积残留厚度,古生... 详细信息

为研究济阳坳陷桩海地区的古潜山油藏控制规律,通过大量二维地震剖面解释,绘制了研究区中、古生界沉积残留厚度图,编制了基底构造纲要与油藏分布图。研究表明,12条大断裂控制了本区大地构造格局,并控制了中、古生界的沉积残留厚度,古生界残留厚度为0～2 200 m,中生界残留厚度为0～3 900 m。桩海地区有效烃源岩主要为沙河街组和馆陶组,储层为寒武—奥陶系地层,沙河街组泥岩为良好盖层,断裂和不整合面作为运移通道。根据12条断裂所分割的区域,将研究区划分为8个区块,并对其作了成藏预测。

关键词：古潜山油气藏桩海地区济阳坳陷

Detailed modeling of aluminum particle combustion——From single particles to cloud combustion in Bunsen flames

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Chinese Journal of Aeronautics 2022年第5期35卷 319-332页

作者： Jiarui zhang Oliver T.STEIN Tien D.LUU Ali SHAMOONI zhixun XIA Zhenbing LUO Likun MA Yunchao FENG Andreas KRONENBURG College of Aerospace Science and Engineering National University of Defense TechnologyChangsha 410073China Institut für Technische Verbrennung Universitat StuttgartStuttgart 70174Germany

A numerical model for aluminum cloud combustion which includes the effects of interphase heat transfer,phase change,heterogeneous surface reactions,homogeneous combustion,oxide cap growth and radiation within the Euler–Lagrange framework is *** model is validated in single particle configurations with varying particle *** combustion process of a single aluminum particle is analyzed in detail and the particle consumption rates as well as the heat release rates due to the various physical/chemical sub-models are *** combustion time of single aluminum particles predicted by the model are in very good agreement with empirical correlations for particles with diameters larger than 10μ*** prediction error for smaller particles is noticeably reduced when using a heat transfer model that is capable of capturing the transition regime between continuum mechanics and molecular *** predictive capabilities of the proposed model framework are further evaluated by simulating the aluminum/air Bunsen flames of Mc Gill University for the first *** show that the predicted temperature distribution of the flame is consistent with the experimental data and the double-front structure of the Bunsen flame is reproduced *** burning rates of aluminum in both single particle and particle cloud configurations are calculated and compared with empirical *** show that the burning rates obtained from the present model are more reasonable,while the correlations,when embedded in the Euler–Lagrange context,tend to underestimate the burning rate in the combustion stage,particularly for the considered fuel-rich flames.

关键词： Aluminum particle combustion Bunsen flame Burning time Burning rate Particle cloud

Comparison of cancer incidence and mortality in three GDP per capita levels in China, 2013

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Chinese Journal of Cancer Research 2017年第5期29卷 385-394页

作者： zhixun Yang Rongshou Zheng Siwei zhang Hongmei Zeng Changfa Xia He Li Li Wang Yanhong Wang Wanqing Chen National Office for Cancer Prevention and Control National Cancer Center/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Department of Epidemiology and Bio-statistics Institute of Basic Medical Sciences Chinese Academy of Medical Sciences & School of Basic Medicine Peking Union Medical College

Objective：In this research,the patterns of cancer incidence and mortality in areas with different gross domestic product per capita（GDPPC）levels in China were explored,using data from population-based cancer registries in 2013,collected by the National Central Cancer Registry（NCCR）.Methods：Data from 255 cancer registries were qualified and included in this *** on the GDPPC data of 2014,cities/counties were divided into 3 levels：high-,middle-and low-GDPPC areas,with 40,000 and 80,000 RMB per year as cut *** calculated cancer incidences and mortalities in these three levels,stratified by gender and age *** national population of the Fifth Census in 2000 and Segi’s population were applied for age-standardized ***：The crude incidence and mortality rates as well as age-standardized incidence rate（ASIR）showed positive associations with GDPPC *** age-standardized mortality rate（ASMR）nevertheless showed a negative association with GDPPC *** ASMR in high-,middle-and low-GDPPC areas was 103.12/100,000,112.49/100,000 and 117.43/100,000,*** cancer was by far the most common cancer in all three GDPPC *** was also the leading cause of cancer death,regardless of gender and GDPPC *** associations with GDPPC level were found for the ASIRs of lung,stomach,esophageal and liver cancer,whereas colorectal and breast cancer showed positive *** for breast cancer,the ASMRs of the other five cancers were always higher in middle-and low-GDPPC areas than in high-GDPPC ***：The economic development is one of the main factors of the heavy cancer burden on Chinese *** would be reasonable to implement cancer control strategies referring to the local GDPPC level.

关键词： Cancer incidence mortality epidemiology GDP per capita China

Novel structures and mechanical properties of Zr_(2)N:Ab initio description under high pressures

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Chinese Physics B 2021年第1期30卷 434-442页

作者： Minru Wen Xing Xie zhixun Xie Huafeng Dong Xin zhang Fugen Wu Chong-Yu Wang School of Physics and Optoelectronic Engineering Guangdong University of TechnologyGuangzhou 510006China School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006China Department of Physics Tsinghua UniversityBeijing 100084China

With the formation of structural vacancies,zirconium nitrides(key materials for cutting coatings,super wearresistance,and thermal barrier coatings) display a variety of compositions and phases featuring both cation and nitrogen *** study presents a systematic exploration of the stable crystal structures of zirconium heminitride combining the evolutionary algorithm method and ab initio density functional theory calculations at pressures of 0 GPa,30 GPa,60 GPa,90 GPa,120 GPa,150 GPa,and 200 *** addition to the previously proposed phases P42/mnm-,Pnnn-,and Cmcm-Zr2 N,five new high-pressure Zr_(2)N phases of PA/nmm,IA/mcm,P2_(1)/m,P3 m1,and C2/m are *** enthalpy study of these candidate configurations reveals various structural phase transformations of Zr2 N under *** calculating the elastic constants and phonon dispersion,the mechanical and dynamical stabilities of all predicted structures are examined at ambient and high *** understand the structure-property relationships,the mechanical properties of all Zr_(2)N compounds are investigated,including the elastic moduli,Vickers hardness,and directional dependence of Young’s *** Cmncm-Zr2 N phase is found to belong to the brittle materials and has the highest Vickers hardness(12.9 GPa) among all candidate phases,while the I4/mcm-Zr2 N phase is the most ductile and has the lowest Vickers hardness(2.1 GPa).Furthermore,the electronic mechanism underlying the diverse mechanical behaviors of Zr2 N structures is discussed by analyzing the partial density of states.

关键词： phase transition phonon dispersion Zr_(2)N first-principles calculations