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Photoluminescence and defect evolution of nano-ZnO thin films at low temperature annealing

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Science China(Technological Sciences) 2013年第1期56卷 25-31页

作者： YANG AiLing YANG Yun ZHANG ZhenZhen BAO XiChang YANG renqiang LI ShunPin SUN Liang Department of Physics Ocean University of China Qingdao Institute of Bioenergy & Bioprocess Technology Chinese Academy of Sciences

Nano-ZnO thin films composed of nanoparticles with sizes of 10-16 nm on silicon substrates at low temperature were prepared by sol-gel *** placing the nano-ZnO thin films at room temperature or annealing at 100°C in air for 10 h intermittently,within a total 70 h annealing time,the evolution of PL spectra of the nano-ZnO thin films were studied in *** the annealing time increases,the PL peaks shift from violet to blue and green *** PL peaks at violet and blue bands decrease with the annealing time,but the PL peaks at green band are *** PL spectra are related to the defects in the nano-ZnO thin *** PL peaks positioned at 430 nm are mainly related to defects of zinc interstatials(Zni),oxygen vacancies and(Vo);the ones at 420 nm to oxygen interstitials(Oi),Zinc vacancies(Vzn),Zni ;and the ones at 468 nm to Vzn,Zni,and charged oxygen interstatials(Vo+).The green luminescence is related to Oi,Vo and *** evolutions of PL spectra and the defects are also related to the concentrations of Zn in the thin films,the thicknesses of the films and the annealing *** the films with 0.5 M and 1.0 M Zn concentrations,after 20 h and 30 h annealing in air at 100°C,respectively,either placing them in air at room temperature or continuing anneal in air at 100°C,the PL spectra are *** the low temperature annealing,Zni decreases with the annealing time,and Oi *** Oi favors to keep the nano-ZnO thin films *** result is important to nano-ZnO thin films as electron transport layers in inverted or tandem organic solar cells.

关键词：纳米ZnO薄膜低温退火缺陷演化光致发光有机太阳能电池退火时间 PL光谱氧空位

2009-2019年江苏省肿瘤登记地区胆囊癌发病趋势及年龄变化分析

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中国肿瘤外科杂志 2024年第3期16卷 215-220页

作者：沈欢孙中明缪丹丹梅冬蒙潘恩春韩仁强周金意缪伟刚俞浩罗鹏飞陶然淮安市疾病预防控制中心慢性病地方病防制科江苏淮安223001 江苏省疾病预防控制中心慢性非传染病防制所江苏南京210009

目的分析2009—2019年江苏省肿瘤登记地区胆囊癌发病趋势及年龄变化情况,为胆囊癌防控提供理论依据。方法选取2009—2019年16个具有连续完整数据的登记处发病资料,计算发病率、中国标准人口发病率(中标率)、平均发病年龄、中标平均发病... 详细信息

目的分析2009—2019年江苏省肿瘤登记地区胆囊癌发病趋势及年龄变化情况,为胆囊癌防控提供理论依据。方法选取2009—2019年16个具有连续完整数据的登记处发病资料,计算发病率、中国标准人口发病率(中标率)、平均发病年龄、中标平均发病年龄、中标年龄别发病构成比等指标。利用Joinpoint软件分析发病趋势,并计算平均年度变化百分比(AAPC)。构建出生队列模型,并分析变化趋势。结果江苏省肿瘤登记地区胆囊癌发病率呈上升趋势,由2009年3.65/10万上升至2019年5.43/10万,AAPC为4.16%(P<0.001)。调整年龄结构后,AAPC为1.26%(P<0.05)。江苏省胆囊癌各年龄组发病率均随年龄增加而上升,80+年龄组达到最高。出生队列结果显示,60岁以下人群胆囊癌发病率较低,60岁及以上人群胆囊癌发病率随出生年份增加而增加。2009—2019年江苏省胆囊癌平均发病年龄年均增加0.16岁,调整人口结构后,仅女性和农村地区仍呈快速升高趋势。2019年全省肿瘤登记地区胆囊癌60岁及以上人群标化年龄发病构成比均高于2009年。2009—2019年全省60岁及以上发病构成比呈上升趋势,年均增加0.83%,调整年龄结构后,年均增加0.48%。结论2009—2019年江苏省胆囊癌发病率呈上升趋势,平均发病年龄出现后移趋势。

关键词：胆囊癌发病率年龄趋势分析江苏

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现代法语兼类词研究

外语研究 2023年第1期40卷 1-7,16,112页

作者：王仁强四川外国语大学词典学研究所重庆400031

现代法语属于印欧语系中形态发达的罗曼语,学界对其兼类词现状至今缺乏清晰认识。本文基于双层词类范畴化理论,自建“《小罗贝尔法语词典》词类标注数据库”,对现代法语概括词的兼类情况进行调查。调查发现:(1)现代法语兼类词数量较大,... 详细信息

现代法语属于印欧语系中形态发达的罗曼语,学界对其兼类词现状至今缺乏清晰认识。本文基于双层词类范畴化理论,自建“《小罗贝尔法语词典》词类标注数据库”,对现代法语概括词的兼类情况进行调查。调查发现:(1)现代法语兼类词数量较大,共有3,990个,占词条总数的7.61%;(2)现代法语兼类词类型较多,共有36种,其中31种为首次发现;(3)现代法语概括词最多兼五类,但兼两类的数量最多;(4)兼类现象是人类语言的共性,现代法语中名形兼类词最为突出。研究表明,词是人类语言的量子,具有波粒二象性,概括词的兼类属于社群语言系统层面词类的叠加,之所以不少学者认为现代法语少有兼类词,根本原因在于受到牛顿思维的束缚,局限于从个体词角度观察现代法语的词类问题。

关键词：现代法语兼类词牛顿思维量子思维

A seven-gene-deleted African swine fever virus is safe and effective as a live attenuated vaccine in pigs

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Science China(Life Sciences) 2020年第5期63卷 623-634页

作者： Weiye chen Dongming Zhao Xijun He renqiang Liu Zilong Wang Xianfeng Zhang Fang Li Dan Shan Hefeng chen Jiwen Zhang Lulu Wang Zhiyuan Wen Xijun Wang Yuntao Guan Jinxiong Liu Zhigao Bu State Key Laboratory of Veterinary Biotechnology Harbin Veterinary Research InstituteChinese Academy of Agricultural SciencesHarbin 150001China National High Containment Laboratory for Animal Diseases Control and Prevention Harbin 150069China

African swine fever(ASF)is a devastating infectious disease in swine that is severely threatening the global pig *** efficacious vaccine is urgently ***,we used the Chinese ASFV HLJ/18 as a backbone and generated a series of genedeleted *** virulence,immunogenicity,safety,and protective efficacy evaluation in specific-pathogen-free pigs,commercial pigs,and pregnant sows indicated that one virus,namely HLJ/18-7GD,which has seven genes deleted,is fully attenuated in pigs,cannot convert to the virulent strain,and provides complete protection of pigs against lethal ASFV *** study shows that HLJ/-18-7GD is a safe and effective vaccine against ASFV,and as such is expected to play an important role in controlling the spread of ASFV.

关键词： African swine fever vaccine safety protective efficacy pig

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广东省生猪产业发展历史演变、问题与对策

广东农业科学 2022年第5期49卷 142-149页

作者：袁仁强陈瑶生刘小红中山大学生命科学学院广东广州510275

我国是最大的生猪养殖和猪肉消费国,猪肉产量直接影响城乡居民的“菜篮子”。广东在经济快速发展的同时,生猪养殖规模也稳居全国前列。但广东的生猪生产不足以满足本省猪肉需求,每年还需要从广西、湖南、海南、福建及江西等临近省份调... 详细信息

我国是最大的生猪养殖和猪肉消费国,猪肉产量直接影响城乡居民的“菜篮子”。广东在经济快速发展的同时,生猪养殖规模也稳居全国前列。但广东的生猪生产不足以满足本省猪肉需求,每年还需要从广西、湖南、海南、福建及江西等临近省份调进生猪。了解广东生猪生产变化,将有利于调整广东生猪生产模式、提高生猪产量。对《广东农村统计年鉴》的生猪生产数据进行深入分析,结果表明广东的生猪产能从改革开放前期的快速增长阶段到“十一五”之后趋于平稳;生猪产能正从经济快速发展的珠三角地区逐渐向粤西、粤北地区转移;生猪养殖效率不断提高,养殖规模正从最初的“小、散、乱”向规模化、集约化转型。当前广东生猪产业面临用地难、环保压力加大、疫病持续、养殖成本高等问题。针对这些问题提出加强重大疫病防控、打造安全生产环境,加强养殖设备改造、提高生产效率和生产安全,合理规划生猪养殖、推进生态化养殖,优化政策、提高养殖户养殖意愿等对策建议,以促进广东省生猪产业向高效化、产业化、生态化发展。

关键词：广东生猪产业生态化规模化发展对策

Advances in the Researches of the Middle and Upper Atmosphere in China

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空间科学学报 2018年第5期38卷 763-780页

作者： chen Zeyu chen Hongbin XU Jiyao L Daren ZHANG Shaodong XUE Xianghui TIAN Wenshou LIU renqiang chen Wen HU Yongyun WANG Rui HU Dingzhu HU Xiong YANG Guotao GONG Yun LU Gaopeng Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 National Space Science Center Chinese Academy of Sciences Beijing 100190 School of Electronic

In this paper we summarize the research results by Chinese scientists in 2016–2018. The focuses are placed on the researches of the middle and upper atmosphere, specifically the researches associated with groundbased observation capability development, dynamical processes, and properties of circulation and chemistryclimate coupling of the middle atmospheric layers.

关键词：中国科学家空气能力开发

ON CULTURE TEACHING IN ELT

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中国英语教学：英文版 2004年第1期27卷 51-54,48,127页

作者： renqiang HebeiTeachersUniversity

The research of culture teaching in ELT refers mainly tothree aspects: the necessity to teach, what to teach and how toteach. This article reviews briefly the process of development ofcultural studies and introduces the relation between culture andELT, indicating the importance of culture teaching in ELT inChina. It also states the contents of cultural communicationinformation, analyses some pragmatic errors that may appear,and further expounds that the final objective is to achieve thelanguage acquisition of English-learners through cultureteaching. In the early stage of language teaching, under theinfluence of formalism and structuralism, cultural studies wererestricted to the edge of English language teaching, and theresearch of linguistics and literature developed respectively intwo relatively parallel lines. Later, anthropology and sociologybegan to influence linguistic theory and language *** the 1990s, cultural studies have been discussed morefrequently, and there is regained interest and understanding inEnglish language teaching and research. Our English languagecurriculum has especially accepted culture teaching as one of theobjectives in language teaching.

关键词：英语教学文化教学文化差异语言理解

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低平流层涡动热通量近似的最佳参考纬度

高原气象 2023年第6期42卷 1529-1535页

作者：杨丰华刘仁强南京信息工程大学气象灾害教育部重点实验室/气象灾害预报预警与评估协同创新中心江苏南京210044

通常基于准地转的变换的欧拉平均框架下提出的涡动热通量近似理论计算极区平流层温度变化的动力和非绝热加热贡献,但是这可能会带来一定的误差。本文根据Liu and Fu(2019)提出的欧拉平均框架下新形式的面积加权平均的热力学能量方程,通... 详细信息

通常基于准地转的变换的欧拉平均框架下提出的涡动热通量近似理论计算极区平流层温度变化的动力和非绝热加热贡献,但是这可能会带来一定的误差。本文根据Liu and Fu(2019)提出的欧拉平均框架下新形式的面积加权平均的热力学能量方程,通过滑动累加得到逐月的温度变化方程。再利用1980-2019年欧洲中期天气预报中心第五代再分析资料(European Centre for Medium-range Weather Forecasts fifth reanalysis data,ERA5),计算北半球极区低平流层100 hPa在全时段(1980-2019年)和两个分时段(1980-1999年、2000-2019年)各月温度增量、动力加热、非绝热加热和对流加热项(W项)的气候平均值,进而讨论涡动热通量近似理论成立的最佳参考纬度。结果表明,新导出的W项使得极区累积的动力和非绝热加热项之和与温度增量项之间的误差在冬春季减少了一半。在100 hPa上,W项随月份和纬度变化,尤其在冬春季节对温度变化贡献明显,由此得到涡动热通量近似成立的最佳参考纬度应该在W项的零等值线附近。进一步验证表明参考纬度可以取在50°N。

关键词：平流层温度变化动力加热非绝热加热涡动热通量参考纬度

Agricultural expansion in Yunnan Province and its environmental consequences

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Chinese Science Bulletin 2006年第B11期51卷 136-142页

作者： LI renqiang DONG Ming PENG Hua ZHANG Lili CUI Qingguo HE Weiming Laboratory of Quantitative Vegetation Ecology Institute of BotanyChinese Academy of Sciences Beijing 100093 China Graduate University of Chinese Academy of Sciences Beijing 100039 China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650024 China

Yunnan Province with numerous international rivers has huge impacts on downstream countries such as Burma, Laos and Vietnam. Agricultural expansion in Yunnan has conferred and continues to confer detrimental impacts on environments. In the past 43 years (1960-2003), the increase in crop yield was associated with a 99.1-fold increase in fertilizers, 2.0-fold in pesticides, and 0.4-fold in cultivated lands, respectively. Based on linear regression of the past trend, the next doubling of crop yield in the future would be accompanied by the increase in fertilizer application (from about 1.3x10(9) kg to 3.6x10(9) kg), and the increase in application of pesticides (from about 2.7x10(7) kg to 9.6x10(7) kg). Similarly, the total amount of cultivated lands would increase from about 5.9x10(6) ha to 9.3x10(6) ha. In the past decades, these changes have caused a series of environmental problems such as agricultural non-point source pollution (ANSP), deforestation, land degradation, and biodiversity loss. If the escalating status continues as our prediction, those problems would get worse and be tough to be dealt with. As for the situation in this region, some practices to minimize the impacts should be implemented in controlling population growth, protecting wetlands, developing tourism, and utilizing fertilizers and pesticides more rationally.

关键词：农业扩展农作物收率环境分析肥料使用杀虫剂使用