Cultural Adaptation of Transnational Ethnic Groups----A Case Study of Africans in Kuangquan Street, Guangzhou

在经济全球化的影响下，自20世纪90年代末以来，数以万计的非洲商人来到广州这个当代中国经济最活跃的大商埠之一寻找机遇。伴随着越来越多非洲商人的到来，广州城中开始出现了非洲人的聚居区，广州城市的社会空间因而显现出新的区隔。如此意想不到的社会变更对广州本地民众形成了巨大文化震撼。与此同时，外来的非洲人也因文化的差异对本地人产生了诸多歧见。在广州人与外来的非洲人之间在不同文化的碰撞中形成了既有冲突、又有趋同的族群关系，对当代中国的国际化进程有着深远的影响。 本研究以非洲移民群相对集中的广州市矿泉街迦南外贸服装城为田野点，通过参与性观察、深度访谈等方法对活跃于该地的中非两个族群进行考察。本研究试图描...Under the influence of the economic globalization, since 1990s, tens of thousands of African merchants have come to Guangzhou for commercial opportunity. As more and more Africans arrive, African ethnic enclaves come up in this city, and therefore, Guangzhou’s social space becomes segregate. Due to the change of social structure, the locals are getting culture shock somehow, while the Africans are...学位：法学硕士院系专业：公共事务学院社会学系_社会学学号：1402008115095

Simulation research on anaerobic digestion biogas generation from low-grade biomass

低劣生物质厌氧消化可以减少温室气体的排放并且生产生物甲烷作为能源。介绍了关于厌氧消化过程、底物的相关理论,还对目前主要用于厌氧产甲烷过程研究的数学模型以及碳氮磷转化的模拟研究进行了综述。其中,一级动力学模型是最为简单的数学模型,其可以通过简单的计算得到整个过程中甲烷产量随着时间的变化曲线,但是只限于较准确模拟甲烷产率的AdM1模型相对发展最为全面、应用最为广泛,且能够针对具体要研究的对象进行模型的修改。同时总结了较为常见的底物厌氧产甲烷研究模型、研究对象及结果、已有碳/氮/磷转化模拟研究及相关研究,并对开展针对厌氧产甲烷过程中碳氮磷转化的模拟研究进行了展望。Anaerobic digestion of low-grade biomass has attracted increasing interest in reducing greenhouse gas emission and facilitating sustainable development of energy supply.The theory of anaerobic digestion biogas generation and feedstocks are presented in this paper.It provides a review on mathematical model of and simulation research on the conversion of C, N, P in the process of anaerobic digestion.First order kinetic model is the simplest mathematical model which can simulate the dynamics of methane production.The advanced mathematical ADM1 is most popular, and simulates the conversion of C, N, P in anaerobic digestion.The model, simulation subjects and results of anaerobic digestion biogas generation of common substrates are given.Methane yield is the main subject of simulation investigation which is studied in almost all simulation researches on anaerobic digestion biogas generation, and some research reports the variation of volatile solid, volatile fatty acid, COD, CH4, CO2 and inorganic carbonate in the process of anaerobic digestion through mathematical modeling, with which the conversion of C can be determined.Simulation researches on the conversion of N include variations of ammonia nitrogen, inorganic nitrogen and total nitrogen.Simulation research on the conversion of P from sludge digestion is also presented.The challenges and future research trends of the conversion of C, N, P in the process of anaerobic digestion are forecasted.国家重点基础研究发展计划项目(2013CB733505)~

The Origin and Development of Feminist Social Work——The Criticism Towards Tradition and Its Remodeling of Professionalism

女性主义起源于19世纪的法国,女性主义者透过实践诉求两性平权的社会,试图让女性从“父权制“中解脱出来。1970至1980年代开始,社会工作者将女性主义观点应用到实务工作中,从而产生了女性主义社会工作。女性主义社会工作通过对传统社会工作的批判,对其专业性进行了重塑,让实务者不仅使女性在能力建设、心理调适和社会支持等方面得到了提高,也使女性在宏观的社会关系变革中得到了发展。Feminism originated in France in the nineteenth century.Feminists pursued gender equality though practice,and tried to liberate women from patriarchy.From 1970-80s,feminist perspectives were applied to practical work by social workers,thereby feminist social work generating.Through the criticism towards tradition,feminist social work remodels its professionalism.And those practitioners not only improve women's qualities such as capacity-building,psychological adjustment and social support,but also let women grow in the macro background of social relations changing

镉低积累水稻品种选育研究进展

水稻(Oryza sativa L.)是我国主要粮食作物之一,稻米镉超标问题严重威胁人体健康。降低稻米镉污染风险,实现水稻安全生产迫在眉睫。镉低积累水稻品种选育是降低稻米镉污染风险经济有效的方法之一。从常规表型筛选到分子标记辅助筛选,从常规育种到分子标记辅助育种、基因工程育种、基因编辑和分子设计育种等分子育种技术,低镉水稻品种选育技术将会走向精准化、高效化与智能化,为水稻的安全生产提供了巨大推动力。综述了镉低积累水稻品种筛选与低镉水稻材料创制的研究进展,并对未来低镉水稻新一代分子育种技术的发展方向进行展望,旨在为保障我国粮食安全与居民健康提供科学支撑

SD大鼠II型糖尿病模型的建立与评价

通过高糖高脂饮食诱导,联合小剂量链脲佐菌素部分破坏胰岛b细胞,建立II型糖尿病SD大鼠模型. 结果表明,模型组大鼠饲喂高糖高脂饲料4周后,腹腔注射30 mg/kg链脲佐菌素,1周后86.7%的大鼠空腹血糖高于13.8 mmol/L,在8周观察期内稳定,糖耐量受损. 皮下注射50 μg/kg艾塞那肽降血糖作用明显,3 h时较初始水平下降38.2%,表明糖尿病大鼠对II型糖尿病治疗药物艾塞那肽的反应良好. 第13周处死大鼠,胰脏病理切片检查,模型组大鼠部分胰岛β细胞被破坏. 建立的模型可用于药效学的相关评价研究

SD大鼠II型糖尿病模型的建立与评价

通过高糖高脂饮食诱导,联合小剂量链脲佐菌素部分破坏胰岛b细胞,建立II型糖尿病SD大鼠模型. 结果表明,模型组大鼠饲喂高糖高脂饲料4周后,腹腔注射30 mg/kg链脲佐菌素,1周后86.7%的大鼠空腹血糖高于13.8 mmol/L,在8周观察期内稳定,糖耐量受损. 皮下注射50 μg/kg艾塞那肽降血糖作用明显,3 h时较初始水平下降38.2%,表明糖尿病大鼠对II型糖尿病治疗药物艾塞那肽的反应良好. 第13周处死大鼠,胰脏病理切片检查,模型组大鼠部分胰岛β细胞被破坏. 建立的模型可用于药效学的相关评价研究

塔克拉玛干沙漠腹地近地面臭氧浓度变化特征及影响因素分析[C]

利用塔克拉玛干沙漠腹地塔中地区2010年6月10日-2012年3月20日地表臭氧浓度连续自动观测数据,结合相应气象要素资料,对地表臭氧质量浓度的日、周、月、季节变化与不同天气条件下日变化特征进行了分析,同时探讨了影响臭氧浓度变化的主要凶素.结果表明：①臭氧浓度日变化具有明显的单峰型日变化规律,夜间变化平缓,白天变化剧烈.09：00前后达到最低值,18：00前后达到最高值,出现时间稍迟于其他城市地区.②臭氧浓度变化具有“周末效应”现象.最高值出现在星期日,最低值出现在星期三；星期一至星期三浓度逐渐降低,星期四又逐渐上升.③最高月平均浓度出现在2010年6月,其浓度为89.6 μg.m-3,最低月平均浓度出现在2012年1月,其浓度为32.O μg.m-3,2010年6-12月,浓度逐月降低.④春、夏季臭氧浓度较高,秋季和冬季明显低于春季和夏季,与大中型城市变化特征基本一致.⑤臭氧浓度日变化最剧烈的是晴天,其次为小雨天气,阴天日变化平缓.沙尘暴出现前,臭氧小时平均浓度变化较小,沙尘暴开始时浓度下降,且下降速度较快.⑥辐射变化也具有单峰型日变化规律,臭氧浓度变化明显晚于辐射变化,太阳辐射的强弱直接影响光化学反应速度,从而导致臭氧浓度的变化.⑦沙尘天气臭氧日平均浓度高于有间隙小雨天气和晴天.相对湿度、风速、风向、日照日数同时影响近地面臭氧浓度的变化,臭氧污染的发生是多种因素共同作用的结果

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies