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基于控制方程的齿轮剖面轮廓优化设计

煤炭技术 2014年第6期33卷 266-268页

作者：刘萍曹凌陕西国防工业职业技术学院西安710300 宝鸡文理学院陕西宝鸡721016

针对传统齿轮由于沿径向受力不均匀和局部应力集中等问题,基于控制方程和斯托道拉数学模型,利用偏微分方程思想,在给定齿轮的质量和转动惯量的约束条件下,对轴对称及厚度均匀的齿轮进行建模,通过优化算法得到了获得均匀径向应力分布的... 详细信息

针对传统齿轮由于沿径向受力不均匀和局部应力集中等问题,基于控制方程和斯托道拉数学模型,利用偏微分方程思想,在给定齿轮的质量和转动惯量的约束条件下,对轴对称及厚度均匀的齿轮进行建模,通过优化算法得到了获得均匀径向应力分布的剖面最佳厚度分布,以实现齿轮轮廓的优化设计。经轮廓优化设计后齿轮的最大径向应力相比于轮初始轮廓设计中齿轮的最大径向应力减少了25%左右。

关键词：控制方程径向应力厚度分布优化设计

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苎麻纤维表面处理对其复合材料性能的影响

化工新型材料 2018年第1期46卷 140-143,149页

作者：刘璇成玲天津工业大学纺织学院天津300387

在不同处理时间和功率的条件下,对苎麻纤维表面进行冷等离子体处理。通过分析纤维表面能以及纤维拉伸强度的变化,选取了3组处理纤维与未处理纤维作为复合材料的增强纤维,并且运用模压工艺制备苎麻纤维增强复合材料。经过扫描电镜分析、... 详细信息

在不同处理时间和功率的条件下,对苎麻纤维表面进行冷等离子体处理。通过分析纤维表面能以及纤维拉伸强度的变化,选取了3组处理纤维与未处理纤维作为复合材料的增强纤维,并且运用模压工艺制备苎麻纤维增强复合材料。经过扫描电镜分析、弯曲强度和剪切强度测试以及单纤维断裂实验,探究了冷等离子体处理对苎麻纤维表面性能及其复合材料性能的影响。结果表明:冷等离子体处理去除了苎麻纤维表面的胶质和杂质,提升了纤维与环氧树脂的粘附功。随着处理时间与功率的增加,复合材料板的力学性能随之提升。与未处理纤维复合材料相比,当处理条件为3min、200W时,复合材料的弯曲强度与剪切强度分别提升了37.0%和30.5%。

关键词：冷等离子体处理苎麻纤维复合材料表面能粘附功力学性能单纤维断裂

Gene Transcription Profile in Mice Vaccinated with Ultraviolet-attenuated Cercariae of Schistosoma japonicum Reveals Molecules Contributing to Elevated IFN-γ Levels

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Acta Biochimica et Biophysica Sinica 2005年第4期37卷 254-264页

作者： Xiang ZHU Zhao-Song ZHANG Min-Jun JI Hai-Wei WU Yong WANG Xiao-Ping CAI Lei ZHANG Shu-Ying HU Lin-Lin FU Feng liu Chuan SU Guan-ling WU Department of Pathogenic Biology,Nanjing Medical University.Nanjing 210029.China Department of Pathogenic Biology Nanjing Medical UniversityNanjing 210029 China

Vaccination with ultraviolet-attenuated cercariae of Schistosoma japonicum induced protectiveimmunity against challenge infection in experimental animal *** preliminary study on the transcrip-tion levels of IFN-γ and IL-4 in splenic CD4~+ T cells revealed that attenuated cercariae elicited predomi-nantly a Th1 response in mice at the early stage,whereas normal cercariae stimulated primarily Th2-dependent *** analysis on the gene profile of the skin-draining lymph nodes demonstratedthat the levels of IFN-γ were significantly higher in vaccinated mice than those in infected mice at day 4,7and 14 post-vaccination or ***,for IL-12 and IL-4,the potent inducers of Th1 andTh2 responses,respectively,as well as IL-10,there were no differences over the course of the experimentbetween the infected and vaccinated *** explore the underlying factors that may potentially contributeto elevated IFN-γ in vaccinated mice,the mRNA profiles of the skin-draining lymph nodes at day 4 post-exposure were compared using oligonucleotide *** the 847 probe sets with increased signalvalues,we focused on chemokines,cytokines and relevant receptors,which were validated by semi-quantitativeRT-PCR,A comprehensive understanding of the immune mechanisms of attenuated cercariae-inducedprotection may contribute to developing efficient vaccination strategies against ***,especiallyduring the early stare of infection.

关键词： Schistosoma japonicum attenuated cercariae oligonucleotide microarray IFN-γ chemokines

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政府采购供应商的权利救济

中国市场 2008年第36期 134-135页

作者：赵凯刘玲东北大学文法学院沈阳工业大学文法学院

政府采购的双重属性决定供应商权利救济体系的多重性、复杂性。供应商权利救济体系的不完善,导致供应商权利救济障碍。解决途径是完善行政救济的实体和程序,依据《民法》和《行政法》原理构造具有联系性、协调性和明确性的供应商权利救... 详细信息

政府采购的双重属性决定供应商权利救济体系的多重性、复杂性。供应商权利救济体系的不完善,导致供应商权利救济障碍。解决途径是完善行政救济的实体和程序,依据《民法》和《行政法》原理构造具有联系性、协调性和明确性的供应商权利救济体系。

关键词：政府采购供应商权利救济

Relationship between P-glycoprotein and CD44 expression in esophageal carcinoma

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The Chinese-German Journal of Clinical Oncology 2006年第5期5卷 339-342页

作者： Shenhua Xu Yutian ling Chihong Zhu Dan Su Xinming Zhou Xianglin liu Zhejiang Cancer Research Institute Hangzhou 310022 China Department of Thoracic Surgery Zhejiang Cancer Hospital Hangzhou 310022 China

Objective： To investigate the relationship between P-glycoprotein （P-gp） and adhesion molecule CD44 expression as well as their clinical significance in esophageal carcinoma. Methods： To examine the expressed level of P-gp and CD44 by flow cytometry （FCM） in the operated samples of 70 cases with esophageal carcinoma and their normal mucosa of esophageal incision, and to evaluate their relationship with clinicopathological factors. Results： Among the 70 cases with esophageal carcinoma, the expression of P-gp in the 27 cases （38.6%） was negative （positive cells 〈25%）; 11 cases （15.7%） were 25%-40% expression of P-gp positive cells; 14 cases （20%） were 41%-60% expression of P-gp positive cells; 18 cases （25.7%） were the high expression （positive cells 〉60%） of P-gp. Of the cases with the tumor sizes being more than 4 cm, the expression of CD44 showed a significant difference （P〈0.05） in 25 cases with P-gp positive, compared with 19 cases with P-gp negative. Of the cases with high-mild differentiated esophageal carcinoma, the expression of CD44 showed a significant difference （P〈0.05） in 22 cases with P-gp positive, compared with 17 cases with P-gp negative. Of the cases with clinical Ⅲ-Ⅳ stage, the expression of CD44 showed a significant difference （P〈0.05） in 26 cases with P-gp positive, compared with 10 cases with P-gp negative. Of the cases with lymph node metastasis, the CD44 expression showed a significant difference （P=0.050） in 27 cases with P-gp positive, compared with 11 cases with P-gp negative. Of the cases of the patients＇ age being more than 56 years, the expression of CD44 showed a significant difference （P〈0.01） in 27 cases with P-gp positive, compared with 12 cases with P-gp negative. When the P-gp and CD44 expression were positive, the clinical Ⅱ stage and Ⅲ-Ⅳ stage in esophageal carcinoma was showed a significant difference （P〈0.05）. Conclusion： When the CD44 and P-gp both have the positive high expression, it will be significantly associated with the

关键词： esophageal carcinoma P-glycoprotein CD44 FCM

HLA association with mesangial Proliferative Glomerulonephritis in Eastern China

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HLA association with mesangial Proliferative Glomerulonephri...

On “South-to-North Water Diversion”——Solving the Problem of Water Shortage in North China Should Look for the Outlet from Adjusting the Industrial Distribution

2012年浙江省医学微生物与免疫学及医学病毒学学术年会暨革兰阴性菌感染论坛

作者： Jing-Jie Zhao Jun-Li liu ling liu Hong-Ying Jia Hong-Wei Wang Clinical Molecular Biology Laboratory The Second Hospital of Shandong University Department of urology The Second Hospital of Shandong University

Objectives To investigate the association of Human Leukocyte Antigen(HLA) gene with mesangialproliferativeglomerul onephritis(MsPGN)inEastern China Subjects and Methods This study included 1073 patients w sedby clinicians according to clinical manifestations and pathological results and randomly select the same number of healthy cont rols from7418 healthy volunteers recruited inHemato poietic Stem Cell Bank of Shandong,Eastern *** clinical and pathological data of the patients were collected and *** of HLA-A,HLA-B,HLA-DRB1all eles were detected and genefrequencies(GF) and odds ratio(OR)were analyzed. Results The frequencies of alleles HLA-A*23,A*25,B*15,B*40,B*53 and DRBl*18 were signific antly higher in MsPG Npatients compared with normal controls,the frequencies of haplotypesA*23-B*44-DRBl*18,A*25-B*15- DRB1*07,A*03-B*70-DRB1*11,A*68-B*13-DRB1*04,A*11-B*10-DRB1*12 were signific antly increased in MsPGN patients compared with normal *** the otherh and,our results showed that the patients with Kidney failure granule get wor seprognos is than those with out Kidney failure. Conclusions Polymorphism of HLAgenesis associated with the here ditary suscep tibility to *** might be corres ponding susceptive and protective genes associated with MsPGN.

关键词： Glomerulonephritis MsPGN HLA Genefrequenc

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Ecological Economy 2005年第1期1卷 7-9页

作者： Linling liuShiqing SichuanAcademyofSocialScience Chengdu610072P.R.China

Because of the conspicuous contradiction of the water shortage in the north, the South-to-North Water Diversion Project has begun from research to preparation andoperation stage recently. I think to solve the problem ... 详细信息

关键词： “南水北调”工程水资源管理中国水资源短缺水利工业资源配置

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基于耗散结构的地铁火灾演变机理研究

消防科学与技术 2017年第5期36卷 603-606页

作者：刘玲玲于师建山东科技大学矿山灾害预防控制教育部重点实验室山东青岛266590

通过分析地铁火灾特性,强调预防地铁火灾的重要性。从地铁火灾成因入手,从源头上避免火灾发生。分析地铁火灾系统的耗散结构特性,揭示各影响因素变化所引起的系统熵值变化。建立地铁火灾系统熵流模型,进行熵流计算。提出预防火灾的措施... 详细信息

通过分析地铁火灾特性,强调预防地铁火灾的重要性。从地铁火灾成因入手,从源头上避免火灾发生。分析地铁火灾系统的耗散结构特性,揭示各影响因素变化所引起的系统熵值变化。建立地铁火灾系统熵流模型,进行熵流计算。提出预防火灾的措施,增加负熵,克服正熵,控制火灾演变方向,使其向着减少火灾发生以及降低损失的方向有序发展。

关键词：地铁火灾耗散结构熵预防火灾

当代海外华人的双重文化认同特征探析——以美国华人为例

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华侨华人历史研究 2021年第1期 45-53页

作者：刘燕玲暨南大学外国语学院广东广州510632

论文以田野调查资料为个案分析,结合相关的理论解读,探析了当代海外华人双重文化认同的基本特征。研究显示,海外华人的双重文化认同是兼具工具性和选择性,且具有复杂多元的个体差异性的“购物车”式混杂型认同。美国华人的双重文化认同... 详细信息

论文以田野调查资料为个案分析,结合相关的理论解读,探析了当代海外华人双重文化认同的基本特征。研究显示,海外华人的双重文化认同是兼具工具性和选择性,且具有复杂多元的个体差异性的“购物车”式混杂型认同。美国华人的双重文化认同主要呈现混杂型特征,而“情境性”的交替型特征并不明显;其“购物车”式文化认同的工具性和选择性体现在语言的使用和偏好、宗教活动和价值观取舍等多个方面;其个体差异性不仅体现在不同群体和代际之间,在同一群体内部也同样复杂多元,这是家庭环境、成长经历和个人性格等微观因素建构的结果。

关键词：美国海外华人双重文化文化认同华裔新生代