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多层堆码包装系统冲击动力学特性研究(Ⅰ)：冲击谱

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振动与冲击 2008年第8期27卷 106-107,120页

作者：王军王志伟江南大学包装工程系江苏无锡214122

研究多层堆码包装系统在半正弦脉冲激励下的冲击特性。建立多层堆码包装系统动力学模型,得到系统统一动力学方程并求解。依据结果提出评价系统冲击特性的组合冲击谱新概念,并讨论了脉冲幅值、材料阻尼及堆码层数对组合冲击谱的影响。结... 详细信息

研究多层堆码包装系统在半正弦脉冲激励下的冲击特性。建立多层堆码包装系统动力学模型,得到系统统一动力学方程并求解。依据结果提出评价系统冲击特性的组合冲击谱新概念,并讨论了脉冲幅值、材料阻尼及堆码层数对组合冲击谱的影响。结果表明,脉冲幅值对组合冲击谱没有影响,阻尼和堆码层数影响显著。

关键词：堆码半正弦组合冲击谱

TNF-α and IL-1RA Polymorphisms and Silicosis Susceptibility in Chinese Workers Exposed to Silica Particles:A Case-Control Study

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Biomedical and Environmental Sciences 2012年第5期25卷 517-525页

作者： wang Yong Wei LAN Ya Jia YANG Yue Lin wang De jun KUANG Jie West China School of Public Health Sichuan University Chendu 610041 Sichuan China West China Fourth Hospital Sichuan University &Oceupational Diseases Hospital Chendu 610041 Sichuan China Shandong Provincial Center for Disease Control and Prevention Jinan 250014 Shandong China

Abstract Objective To assess the association of TNF-α and IL-1RA SNPs with the risk of silicosis in Chinese workers exposed to silica particles. Methods Case-control study design was used to enroll 68 silicotic patients induced by silica particles and 68 healthy workers matched for length of silica particle exposure as controls. Both cases and controls were from the same company in southwest China, and each of them was requested to complete a questionnaire. Blood samples were drawn for genomic DNA extraction from each participant. The genotyping of TNF-α （-238 and -308） and IL-1RA （＋2018） was performed using polymerase chain reaction-based restriction fragment length polymorphism （PCR-RFLP） and SYBR green-based quantitative polymerase chain reaction {qPCR）, respectively. Unconditional logistic regression model was used to estimate odds ratios （ORs） and their 95% confidential intervals （Cl） for SNPs. Results No significant differences were found between cases and controls in particles exposure length, body mass index （BMI）, and status of smoking and alcohol consumption except for age （P=O.O01） and blood type （P=0.042）. The frequencies of TNF-c（（-238） and IL-1RA （＋2018） genotypes in cases were significantly different from those in controls, （P=O.O01 and P=0.O02, respectively）, while a borderline significant difference was found in the frequencies of TNF-α（-308） between cases and controls （P=0.063）. The variants of three SNPs increased the risk of silicosis in the Chinese workers exposed to silica particles. The adjusted ORs of TNFα（-308）, TNF-α（-238） and IL-1RA （＋2018） were 2.8 （95% Ch 2.1-7.5）, 20.9 （95% Ch 2.8-236.4） and 4.0 （95% CI： 2.6-10.2）, respectively. Conclusion It is suggested that cytokine polymorphisms of TNF-ct （-238, -308） and IL-1RA （＋2018） are associated with the risk of silicosis in the Chinese workers exposed to silica particles. Further independent studies on the interaction between SNPs and exposure to silica particles with a larger sample size are

关键词： TNF-α, IL-1RA Polymorphism Silicosis Case-control study

Risk factors for adverse reactions of fundus fluorescein angiography

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Eye Science 2016年第2期31卷 86-91页

作者： Yi Yang Jingzhuang Mai jun wang Department of Qphthalmology Epidemiology Division Department of Cardiac SurgeryGuangdong Cardiovascular InstituteGuangdong General HospitalGuangzhou 510080China

Background:To explore the difference between the outcomes of correlations between a series of variables and adverse reactions(ARs)to fluorescein from univariate and multivariate analysis and to evaluate the nausea effects in different age ***:A retrospective study of patients undergoing consecutive fluorescein angiography between March2010 and February 2012 was *** patients were excluded on the ground of age,presence of atopy,allergy history,previous procedures without severe allergic ARs,asymptomatic hypertension and kidney failure with serum creatinine levels lower than 250μmol/L or with renal ***:A total of 829 patients were enrolled and 22.2%of them had *** majority of reactions were nausea(12.1%)which occurred less when age became old(P<0.0001).When the correlations between a series of variables and ARs were assessed separately,age(P<0.0001),prior reactions(P<0.0001)and motion sickness(P=0.0062)were highly and cardio/cerebrovascular disease(P=0.0015),diabetes(P=0.0001)and renal disease(P=0.0219)were lowly related to ***,when the correlations were assessed simultaneously,only age[odd ratio(OR)0.974;95%confidence interval(CI),0.962–0.986],prior reactions(OR 5.596;95%CI,2.083–15.029)and motion sickness(OR 4.849;95%CI,1.583–14.856)were statistically correlated with ***:Fluorescein angiography is a safe procedure for patients who are relatively healthy but with a history of any systemic *** age,prior reactions and motion sickness which are highly related to emetic events should be considered in the evaluation of ARs to fluorescein.

关键词：不良反应血管造影荧光素危险因素过敏性疾病眼底心脑血管疾病肾脏疾病

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一种改进的虚拟变换自适应波束形成方法

电子与信息学报 2009年第1期31卷 101-103页

作者：王明哲王俊西安电子科技大学雷达信号处理重点实验室西安710071

常规虚拟变换技术用于波束形成时,受变换区域影响较大,在区域选择不当时甚至会引起整个方向图的严重畸变。本文提出了一种改进方法,该方法基于子空间投影思想,给常规变换矩阵引入干扰方向信息。利用该方法形成波束时,能稳定地形成对准... 详细信息

常规虚拟变换技术用于波束形成时,受变换区域影响较大,在区域选择不当时甚至会引起整个方向图的严重畸变。本文提出了一种改进方法,该方法基于子空间投影思想,给常规变换矩阵引入干扰方向信息。利用该方法形成波束时,能稳定地形成对准干扰方向的零点,对变换区域的选择也不很敏感。并且在小快拍数时仍然具有良好的波束保形能力。理论分析和计算机仿真验证了该方法的有效性。

关键词：波束形成虚拟变换变换区域

一种基于k-Fibonacci矩阵和JPEG的数据隐藏方法

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系统工程与电子技术 2006年第8期28卷 1252-1257,1278页

作者：王建军王颖复旦大学电子工程系上海200433 中国科学院研究生院北京100039

提出了一种基于k-Fibonacci矩阵和JPEG的数据隐藏方法。该方法先计算8×8的k-Fibonacci矩阵,然后,对8×8的k-Fibonacci矩阵进行修改,并以修改后的k-Fibonacci矩阵为量化表对掩体图像的DCT系数进行量化,将要隐藏的数据嵌入到量化后DCT系... 详细信息

提出了一种基于k-Fibonacci矩阵和JPEG的数据隐藏方法。该方法先计算8×8的k-Fibonacci矩阵,然后,对8×8的k-Fibonacci矩阵进行修改,并以修改后的k-Fibonacci矩阵为量化表对掩体图像的DCT系数进行量化,将要隐藏的数据嵌入到量化后DCT系数的DC和AC系数中,得到含有秘密数据的JPEG图像文件。隐藏数据的提取不需要原掩体图像。我们将所提方法与JPEG隐藏工具Jpeg-Jsteg、基于量化表修改(QTM)的方法进行了比较。结果表明,所提方法隐藏的数据量比Jpeg-Jsteg和QTM的方法大,嵌入数据后的图像质量好,而且与它们具有相同的安全性。

关键词： JPEG Jpeg-Jsteg 离散余弦变换数据隐藏 k-Fibonacci矩阵

Adoptive transfer of FTY720-treated immature bone marrowderived dendritic cells(BMDCs) significantly reduced the spontaneous resorption rate in the CBA/J ×DBA/2 mouse model

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Journal of Reproduction and Contraception 2016年第2期27卷 67-75页

作者： Miao XIONG Jie-ping ZHU Li LI Yang LIU Yu-qin JI jun wang Department of Obstetrics and Gynecology the Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine

Objective To investigate the effect of FTY720-treated immature bone marrow-derived dendritic cells（BMDCs） on the embryo resorption rate in the CBA/J× DBA/2 abortion mouse *** The dendritic cells（DCs） were derived from bone marrow of DBA/2 mice, and then co-cultured with FTY720. The abortion mouse models were established by mating female CBA/J mice with DBA/2 mice. Via the CBA/J×DBA/2 abortion mouse model, six groups were established, group A： normal pregnancy model; group B： abortion mouse model with no treatment; group C： abortion mouse model injected with DC culture medium（DCCM）; group D： abortion mouse model injected with DC; group E： abortion mouse model injected with FTY720; group F： abortion model mouse injected with FTY720-DC. The differences were compared in the embryo resorption rates of the CBA/J ×DBA/2 abortion mouse model treated with FTY720-DC or different controls observed on gestation day 12 to 14, and then the microenvironment in murine pregnancy was *** The embryo resorption rate was statistically significantly decreased in group D and group E when they compared with group B and group C（P〈0.05, respectively）.Furthermore, the embryo resorption rate in group F showed a statistically significant decrease when compared with the other groups except group A（P〈0.01）. These resultssuggest that FTY720-DCs possess a notable advantage over DCs or FTY720 in reducing the embryo resorption rate of the abortion mouse model. The percentage of Th17（IL-17＋CD4＋T cells） in peripheral blood mononuclear cell（PBMC） in the abortion mouse model was 4.35%±0.34% before treated with FTY720-DC, and was1.34%±0.28% after treated with FTY720-DC（P〈0.01）. The percentage of Tregs（CD4~＋CD25~＋Foxp3~＋T cells） in PBMC was significantly increased in group F（8.35%±1.80%） as compared with group B（2.68%±0.65%）（P〈0.01）.Conclusion Adoptive transfer of FTY720-DC can statistically significantly reduce the embryo resorption rate in the CBA/J×DBA/2 abortion mouse model.

关键词： embryo resorption rate FTY720 tolerance adoptive transfer spontaneous abortion dendritic cell(DC)

高Al组份AlGaN/GaN异质外延材料生长及肖特基势垒二极管制备

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人工晶体学报 2015年第12期44卷 3597-3600页

作者：王进军王侠陕西科技大学理学院西安710021 西安科技大学电气与控制工程学院西安710054

采用MOCVD制备了带有AlN插入层的高Al组份AlGaN/GaN异质结构外延材料,在此外延材料的基础上利用磁控溅射Ti/Al/Ti/Au欧姆接触电极,利用EB蒸镀Ni/Au肖特基接触电极制备了AlGaN/GaN SBD,对外延材料和器件的性能进行了相关测试,测试结果表... 详细信息

采用MOCVD制备了带有AlN插入层的高Al组份AlGaN/GaN异质结构外延材料,在此外延材料的基础上利用磁控溅射Ti/Al/Ti/Au欧姆接触电极,利用EB蒸镀Ni/Au肖特基接触电极制备了AlGaN/GaN SBD,对外延材料和器件的性能进行了相关测试,测试结果表明:器件开启电压约为1.1 V,-10 V时反向漏电流小于0.5μA,反向击穿电压68.3 V,器件具有非常明显的整流特性,同时有AlN插入层的器件的正向、反向特性均优于不带AlN的器件,Al N插入层可以有效地提高器件的性能。

关键词： AlN插入层 AlGaN/GaN SBD 欧姆接触肖特基接触

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光栅法在船体横扭角测量中的应用

光学精密工程 2005年第3期13卷 371-375页

作者：王建军王颖国防科学技术大学中国人民解放军63921部队

介绍了测量船船体变形测量系统几种测量方法的基本工作原理,比较了这几种测量方法的优缺点,在此基础上提出了一种新的测量方法光栅法。该方法涉及的测量系统不仅体积小、质量轻,便于安装调试,而且精度也比较高,克服了前几种方法的不足... 详细信息

介绍了测量船船体变形测量系统几种测量方法的基本工作原理,比较了这几种测量方法的优缺点,在此基础上提出了一种新的测量方法光栅法。该方法涉及的测量系统不仅体积小、质量轻,便于安装调试,而且精度也比较高,克服了前几种方法的不足。光栅法采用了图像高精度亚像素定位方法,可提高测量精度。对该方法的测量精度进行了理论分析与仿真试验,从理论误差和试验结果中,可得出结论:光栅法的测角精度可优于5″,能达到测量船船体变形测量系统的要求。

关键词：图像处理亚像素处理变形测量系统光栅法横扭角

Epidemics of overweight and obesity among growing childhood in China between 1997 and 2009： Impact of Family Income, Dietary Intake, and Physical Activity Dynamics

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Chinese Medical Journal 2015年第14期128卷 1879-1886页

作者： Chang Su Bing Zhang You-Fa wang Xiao-Fang Jia Hong Xue Hui-jun wang Department of Public Health Nutrition and Nutrition Policy National Instiute for Nutrition and Health Chinese Center for Disease Control and Prevention Beijing 100050 China System-oriented Global Childhood Obesity Intervention Program Department of Epidemiology and Environmental Health School of Public Health and Health Professions University at Buffalo State University of New York New York USA

Background： Obesity has become a major health problem among children and adolescents worldwide. This study aimed to examine the trends of overweight and obesity among childhood in China and assess their associations with family income, dietary intake, and physical activity （PA） between 1997 and 2009. Methods： Two waves of cross-sectional data of Chinese children and adolescents aged 7-17 years from the China Health and Nutrition Survey were used. Weight and height were measured following standardized procedures. Dietary intake was assessed by 3 consecutive 24-h recalls. Childhood overweight and obesity were defined using the International Obesity Task Force-recommended body mass index cut-offs. Multivariate linear regression analysis was used to examine the associations of family income with diet intakes and PA. Multivariate logistic regression analysis was conducted to assess the associations of overweight and obesity with family income, dietary intake, and PA. Results： The prevalence of childhood overweight and obesity increased from 12.6% in 1997 to 22.1% in 2009, particularly in the medium- and high-family income groups, which increased by 102.7% and 90.3%, respectively. Higher fat intake （% energy）, and moderate and vigorous PA were significantly associated with overweight and obesity in final model （odds ratio [OR] = 1.01, 95% confidence interval [CI]： 1.00-1.02, P = 0.004; and OR = 0.99, 95% CI： 0.98-1.00, P = 0.036, respectively）. Conclusions： The prevalence of overweight and obesity among Chinese children and adolescents has increased between 1997 and 2009. Reducing fat intake and increasing PA may help obesity prevention.

关键词： Adolescent Child Dietary Intake Income Obesity Overweight Physical Activity