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超精表面缺陷检测系统的实验研究

光学精密工程 2005年第z1期13卷 65-68页

作者：李玉和李庆祥王东生葛杨翔廖小华清华大学精密仪器与机械学系北京100084

电子产品高度集成化与高性能化发展,对超精表面及亚表面无损伤性要求越来越高。为实现纳米尺度分辨率、大视场表面损伤检测,利用原子力微悬臂探针设计了一种新型超精表面缺陷探测系统,采用柔性机构进行微悬臂探针俯仰与倾斜度微调,利用... 详细信息

电子产品高度集成化与高性能化发展,对超精表面及亚表面无损伤性要求越来越高。为实现纳米尺度分辨率、大视场表面损伤检测,利用原子力微悬臂探针设计了一种新型超精表面缺陷探测系统,采用柔性机构进行微悬臂探针俯仰与倾斜度微调,利用压电双晶片实现接触、非接触以及轻敲3种不同探测模式。系统特性实验表明:该探测系统位移分辨率可达2 nm,共振频率90 Hz,满足超精表面缺陷检测系统性能要求。

关键词：微探头柔性铰链压电双晶片激光干涉

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基于体验老龄工作坊的共情设计研究

包装工程 2018年第2期39卷 17-21页

作者：董玉妹袁姝董华侯冠华同济大学上海200092 东华大学上海200051

目的在老龄化日益加剧的背景下,研究在设计活动中面向老年群体的共情。方法通过在设计课堂组织体验老龄设计工作坊,在工作坊中设置3种不同的共情设计技术刺激,探索设计专业学生的共情能力(即特质共情)与3种不同的共情设计技术对共情反应... 详细信息

目的在老龄化日益加剧的背景下,研究在设计活动中面向老年群体的共情。方法通过在设计课堂组织体验老龄设计工作坊,在工作坊中设置3种不同的共情设计技术刺激,探索设计专业学生的共情能力(即特质共情)与3种不同的共情设计技术对共情反应(即状态共情)、学生对共情工作坊效用的主观反馈以及设计表现的影响。结果在设计情境下,人格特质会影响设计者对共情刺激的反应;在3种不同的共情设计技术中,模拟相较于观察和观察后自我反观对共情效用的主观反馈有更积极的影响;共情特质的差异会影响设计者设计结果的实用性;设计者的共情反应会影响设计者对共情效用的主观反馈。结论为设计研究和设计教学中引入共情设计技术的必要性提供了切实的证据,也为共情设计技术的选择提供了参考,同时根据项目的需求差异,建议设计管理者根据设计师差异化的共情特质匹配设计项目。

关键词：共情设计特质共情状态共情设计教育体验老龄

Correlation between hemagglutination Inhibition Titer and Protection against Infectious Bronchitis Virus Challenge in SPF Layers

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Animal Husbandry and Feed Science 2010年第5期2卷 34-36,40页

作者： JING Xiao-dong ZHANG Zhen-hua LI Lin ZHANG Jian-wei JIANG Bei-yu Institute of Animal Husbandry and Veterinary Medicine Beijing Academy of Agriculture and Forestry Sciences Beijing 100097 China

[ Objective] To study the correlation between HI titer and protection against IBV challenge in SPF layers. [ Method ] SPF layers were randomly divided into four groups, namely group A1, A2, B1 and B2. The group A1 was immunized with H120 live vaccine. The group A2 was first immunized with H120 live vaccine and later boosted with ND-IB-EDS trivalent inactivated vaccine. The group B1 was used as unimmunized chal- lenge control. The group B2 was kept as unimmunized unchallenged control. The blood samples were taken prior and post-vaccination at intervals and HI tests were conducted. At the laying peak, the group A1, A2 and B1 were challenged with IBV M4t virulent strain. The clinical features and egg production of layers were monitored and recorded. [Result] After 30 d post vaccination with H120 live vaccine, the HI titer reached 4.45 log2; after 30 days boosting with ND-IB-EDS trivalent inactivated vaccine, the HI titer reached to 7.35 log2. Before challenge, HI antibody titer in group A1, A2, B1 and B2 were respectively 4.24 log2, 7.40 Iog2, 2.10 log2 and 2.10 log2. After challenge, chickens in unimmunized challenge control group B1 showed respiratory symptoms, egg production dropped by 30.9%, and they produced more soft-shelled, no-shelled or abnormal eggs. In the group A1, some chickens had light respiratory symptoms and egg production dropped by 11.7%. In the group A2, the egg production of all chickens was as normal as the group B2. [ Conclusion] When the HI titer was over 6 log2, challenge by virulent virus had no impact on egg produc- tion; when the HI titer was 5 log2, 4 log2 and less 3 log2, egg production dropped by 6.0%, 11.3% and 29.6%, respectively. Thus, the HI anti- body level in chickens has close correlation with protection against IBV challenge.

关键词： Infectious bronchitis hemagglutination inhibition titer Protection rate against challenge

Associations between CD24 gene polymorphisms and inflammatory bowel disease:A meta-analysis

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World Journal of Gastroenterology 2015年第19期21卷 6052-6059页

作者： Xiao-Li huang dong-hua Xu Guo-Pin Wang Shu Zhang Cheng-Gong Yu Department of Gastroenterology Gulou School of Clinical Medicine Nanjing Medical University Department of Gastroenterology Nanjing Jiangbei People’s Hospital Affiliated to Southeast University Department of Rheumatology the First Affiliated Hospital of Nanjing Medical University Nanjing University Medical School Department of Gastroenterology Nanjing Drum Tower Hospital the Affiliated Hospital of Nanjing University Medical School

AIM: To evaluate the relationships between CD24 gene polymorphisms and the risk of inflammatory bowel disease(IBD), including ulcerative colitis(UC)and Crohn's disease(CD).METHODS: The PubMed, Web of Science and Cochrane Library databases were searched(up to May30, 2014). The search terms "CD24", "inflammatory bowel disease", "Crohn's disease", "Ulcerative colitis","IBD", "CD" or "UC"; and "polymorphism", "mutation"or "variant" were used. Association studies were limited to the English language, but no limitations in terms of race, ethnicity or geographic area were *** SE12 software was used to calculate the pooled odds ratios(ORs) with 95% confidence intervals(CIs).P he information was independently extracted from each eligible study by two investigators. Two common polymorphisms, C170T(rs8734) and TG1527del(rs3838646), in the CD24 gene were ***: A total of three case-control studies including 2342 IBD patients and 1965 healthy controls were involved in this meta-analysis. The patients and controls were from Caucasian cohorts. The three articles included in this meta-analysis all conformed to Hardy-Weinberg equilibrium. This meta-analysis revealed that there were no significant associations between the two CD24 polymorphisms and the risk for IBD(all P > 0.05). However, in a disease subgroup analysis, we found that the CD24 C170 T polymorphism was associated with an increased risk of UC in a dominant model(OR = 1.79, 95%CI: 1.15-2.77, P =0.009) and an additive model(OR = 1.87, 95%CI:1.19-2.93, P = 0.007), but this relationship was not present for CD. The CD24 TG1570 del polymorphism was significantly associated with CD in the additive model(OR = 1.24, 95%CI: 1.01-1.52, P = 0.037).CONCLUSION: Our findings provide evidence that the CD24 C170 T polymorphism might contribute to the susceptibility to UC, and the CD24 TG1527 del polymorphism might be associated with the risk of CD.

关键词： CD24 Polymorphism Inflammatory boweldisease rs8734 rs3838646 Meta-analysis

基于可见/近红外能量光谱的苹果褐腐病和水心鉴别

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光谱学与光谱分析 2008年第9期28卷 2098-2102页

作者：王加华孙旭东潘璐孙谦韩东海中国农业大学食品科学与营养工程学院北京100083 中国农业大学工学院北京100083

快速无损鉴别苹果内部品质的优劣是当前苹果行业亟待解决的一项重要课题。针对这一现状,提出了直接采用可见-近红外能量光谱对苹果褐腐病、水心鉴别的新方法,考察了不同判别分析方法对苹果类别判定的准确性。在能量光谱经MSC或者一阶导... 详细信息

快速无损鉴别苹果内部品质的优劣是当前苹果行业亟待解决的一项重要课题。针对这一现状,提出了直接采用可见-近红外能量光谱对苹果褐腐病、水心鉴别的新方法,考察了不同判别分析方法对苹果类别判定的准确性。在能量光谱经MSC或者一阶导数处理后,分别采用了峰面积判别法(PADA)、主成分分析判别法(PCADA)、偏最小二乘判别法(PLSDA)建立判别模型。结果显示,三种方法对褐腐病苹果判别正确率都为100%;对水心苹果分别是79.2%,95.0%和96.7%;对正常苹果分别是88.6%,98.2%和98.8%。其中,PCADA和PLSDA明显优于PADA,而PLSDA总判别率最高,达到98.1%,其建模标准差RMSEC为0.449,预测标准差RMSEP为0.392,说明可见-近红外能量光谱结合化学计量学算法可以快速、无损鉴别苹果褐腐病和水心。

关键词：可见-近红外能量光谱鉴别褐腐病苹果水心苹果

Establishment of in vitro culture of Populus euphratica Olivier

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Forestry Studies in China 2006年第4期8卷 10-14页

作者： Zhao Peng dong Zhan-yuan Sun Hong-bin Zhao Ju-ying Wang hua-fang College of Biological Sciences and Biotechnology Beijing Forestry University Beijing 100083 P. R. China Ecology ＆ Environment College Inner Mongolia Agricultural University Huhhot 010019 P. R. China Alashan Australian Affairs Office Bayanhaote 750306 P. R. China Institute of Forestry of Alashan Inner-Mongolia Alashan 750306 E R. China

The purpose of our study was to establish a regeneration system for micropropagation of Populus euphratica Olivier. On the basis of an analysis of plant leaf mineral nutrients, a special medium was proposed, called MP2. In optimizing media for in vitro plant cultures including MS, B5 and MP2 media we employed hormones, auxin IAA, cytokine benzyladenine （BAP） and gibberellic acid （GA） in our factorial experiments on media. Adventitious shoots were derived from cuttings of adult plants taken from Xingii- ang, west China, on selected media with MP2^＋ 0.5 mg·L^-1BA＋0.1 mg·L^-1 NAA. The shoots were elongated on a medium with 0.25 mg·L^-1 BAP, 0.1 mg·L^-1NAA and 2 mg·L^-1 GA and were then rooted on a medium with 0.2-0.5 mg·L^-1 IBA. All the media were incorporated with 30 g·L^-1 sucrose and an adjusted pH at 6.3.

关键词： Populus euphratica Olivier plant hormones in vitro culture micropropagation

新形势下普通高校高水平运动员就业现状及对策研究——以江苏省为例

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山东体育学院学报 2009年第9期25卷 83-87页

作者：朱迅华何志林须晓东江苏科技大学体育学院江苏镇江212003 上海体育学院体育教育训练学院上海200438

高校试办高水平运动队是我国多形式、多渠道、多层次培养优秀竞技体育人才的一项重要战略措施。"出口"不畅必然导致"进口"不顺,高校高水平运动员就业是高校高水平运动队可持续发展的重要因素之一。运用文献资料、专家访谈、问卷调查、... 详细信息

高校试办高水平运动队是我国多形式、多渠道、多层次培养优秀竞技体育人才的一项重要战略措施。"出口"不畅必然导致"进口"不顺,高校高水平运动员就业是高校高水平运动队可持续发展的重要因素之一。运用文献资料、专家访谈、问卷调查、数理统计等科研方法,对江苏省17所高校的2008届高水平运动员毕业生就业现状进行调查,从社会、高校、高校高水平运动员三个层面,分析了影响运动员就业的因素,并提出了提高和完善就业的对策,为职能部门和运动员如何提高就业率提供参考,以促进高校竞技体育的可持续发展。

关键词：江苏省普通高校高水平运动员就业

低pH条件下大豆蛋白7S和11S组分的表面特性

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食品工业科技 2015年第15期36卷 92-95,99页

作者：徐红华董世荣何雪飞东北农业大学食品学院黑龙江哈尔滨150030

本文采用7S形成纤维聚合结构的制备条件,研究低p H条件下长时间热处理对大豆蛋白7S和11S(包括酸性亚基和碱性亚基)乳化性和起泡性的影响。结果发现,低p H条件下长时间热处理的聚合手段,可以显著(p<0.05)改善不同大豆蛋白组分的起泡性,... 详细信息

本文采用7S形成纤维聚合结构的制备条件,研究低p H条件下长时间热处理对大豆蛋白7S和11S(包括酸性亚基和碱性亚基)乳化性和起泡性的影响。结果发现,低p H条件下长时间热处理的聚合手段,可以显著(p<0.05)改善不同大豆蛋白组分的起泡性,但对乳化性没有明显的改善作用,甚至对乳化稳定性有降低作用,这种改善程度与是否形成纤维聚合结构无关。与p H7.0条件下的热处理手段相比,低p H条件下长时间热处理的聚合手段能够使大豆蛋白7S和11S表面疏水性显著增加,这种特殊的结构变化更有力于提高起泡性能。因此,在低p H条件下长时间热处理后,7S和11S具有较高的表面疏水性和较好的起泡性能。

关键词：大豆蛋白起泡性乳化性表面疏水性聚合

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架空线路故障在线检测与分段定位系统

控制工程 2012年第3期19卷 539-542页

作者：董爱华李良孙士栋周世华河南理工大学电气工程与自动化学院河南焦作454000 开封供电公司河南开封475000

针对目前架空线路故障检测准确性低和借助GSM通信网络传输线路故障信息成本高的现状,介绍了以工控机为核心的架空线路故障在线检测与分段定位系统。将软件与硬件结合、电流变化率与零电流检测方法并用,提高了线路短路故障检测的准确性;... 详细信息

针对目前架空线路故障检测准确性低和借助GSM通信网络传输线路故障信息成本高的现状,介绍了以工控机为核心的架空线路故障在线检测与分段定位系统。将软件与硬件结合、电流变化率与零电流检测方法并用,提高了线路短路故障检测的准确性;将相电压信号与5次谐波电流信号相融合,提高了接地故障检测线路的准确性;采用Zigbee无线传输芯片制成独立的信号传输系统,既降低了系统的运行成本,又保证了信号的可靠传输。以组态王6.51软件为开发平台,设计出了具有多种功能的监控程序和显示画面。该系统已在现场投入运行,运行情况良好,并顺利通过了技术结题验收。

关键词：架空线路短路故障接地故障在线检测