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Expression of BMP Receptors in Porcine Granulosa Cells (GCs) and Their Regulation by Luteinizing Hormone (LH)

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Agricultural Sciences in China 2011年第2期10卷 289-295页

作者： WANG Wei ZHANG Hai-yan HE Yu ZHAO yong-yan WANG li li Xin-xiu CHEN Xia XU Yin-xue College of Animal Science ＆ Technology Nanjing Agricultural UniversityNanjing 210095P.R.China

Bone morphogenetic proteins（BMPs） play critical roles in follicle growth and *** initiate signaling by assembling BMP receptors and activating Smads,which in turn alter expression of target *** mechanism underlying the regulation of the expression of BMP receptors and Smads during follicle development in pigs is still *** quantitative real-time PCR,the mRNA expression of BMP receptors and Smads in granulosa cells（GC） was *** were obtained from small porcine follicles（SF;3 mm diameter） and dominant follicles（DF;6 mm diameter）;ActR1A and BMPR2 mRNA levels in DF were significantly higher（P0.05） than that in SF,whereas BMPR1B,Smad4 and Smad7 expression tended to decrease（P0.05）.The levels of BMPR1A,ActR2,Smad1,Smad5,and Smad8 mRNA did not differ between DFs and *** investigate the effect of LH on BMP receptors in GC,cells obtained from porcine DFs were cultured in medium supplemented with different doses of luteinizing hormone（LH）.High doses of LH（4 IU mL-1） significantly decreased the concentration of estradiol（E2） and progesterone（P4） in medium and the expression of Cyp19a1（P450 aromatase,P450arom） and Cyp11a1（cholesterol side-chain cleavage enzyme P450,P450scc）,while significantly increased viable cell numbers and up-regulated expression of cyclin dependent kinase-4（CDK4） and cyclin ***,LH had no effect on the expression of BMP receptor ***,the present study indicates that the expression of members of the BMP signaling pathway in porcine GC is regulated during follicle development and the expression of BMP receptors are not regulated by LH in porcine GCs.

关键词： porcine GCs mRNA expression BMP receptors Smads LH E2 P4

Laboratory-scale study of the suppression of PCDD/F emission during coal and MSW co-incineration

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Journal of Environmental Sciences 2007年第6期19卷 762-767页

作者： LU Sheng-yong yan Jian-hua li Xiao-dong NI Ming-jiang CEN Ke-fa State Key Laboratory of Clean Energy Utilization Institute for Thermal Power Engineering Zhejiang University Hangzhou 310027 China

The experimental test of co-incinerating Chinese raw municipal solid waste （MSW） and coal in a laboratory-scale tubular reactor was first reported in present study, and the emission of normal gas components and the effects of the S/Cl molar ratio or coal mixing percentages on polychlorinated dibenzo-p-dioxins and dibenzofurans （PCDDs/Fs） emission were investigated and discussed. The results indicated that OCDD was the only PCDD homologues since others like TCDD-HpCDD was hardly detected, while as the categories of PCDF homologues were comparatively much more general. The amount of PCDD was much larger than that of PCDF in all operating conditions. Since ZPCDF/∑PCDD〈〈1, the dominant role of the precursor formation was proven in our experimental conductions. With increasing the coal addition to MSW （from 0 to 16%）, PCDD and PCDF were reduced considerably. Coal and MSW may suppress the PCDD/F emissions efficiently （over 95%） during the MSW incineration process. The PCDD/F suppression results of the present study could be helpful guidance to the industrial application of Chinese MSW and auxiliary coal co-incineration processes. The PCDD/F stack emission data of two industrial incinerators using co-incineration technology in China seem to have a great positive reduction of PCDDs/Fs.

关键词： co-incineration PCDDs/Fs suppression S/Cl molar ratio

Ignition-proof performance and mechanism of AZ91D-3Nd-xDy magnesium alloys at high temperatures

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China Foundry 2018年第2期15卷 97-102页

作者： yong-yan li Wei-min Zhao Jian Ding Hai-tao Xue School of Materials Science & Engineering Hebei University of Technology

This study focused on the synergistic effect of alloying elements neodymium(Nd) and dysprosium(Dy) on the ignition-proof performance of AZ91D alloy. The ignition-proof mechanism of AZ91D-3 Nd-x Dy(x = 0.5, 1.0, 1.5, 2.0 and 2.5 wt.%) alloy was discussed in depth through ignition-proof testing and microstructure observation. The results showed that the AZ91D-3 Nd-2 Dy alloy exhibited the highest ignition-point of 893 K, increased by 69 K as compared to the AZ91D alloy. The ignition-proof mechanism of Nd and Dy additions lay in three aspects:(1) the formation of denser oxide film consisting of Dy_2O_3 and MgO improves the oxidation resistance of the alloy,(2) the great reduction of the low melting-point phase β-Mg_(17)Al_(12), which leads to the decrease in the oxygen diffusion channels, and(3) the newly formed high melting-point phases(Al_2Nd and Al_2Dy), which block the oxygen diffusion channels and prevent the chemical reaction of Mg and oxygen.

关键词： AZ91D Nd Dy ignition-proof high temperature

Early exercise European option and early termination American option pricing models

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Chinese Business Review 2010年第11期9卷 21-25页

作者： yan yong-xin HU yan-li School of Management Tianjin Normal University Tianjin 300387 China

The maximum relative error between continuous-time American option pricing model and binomial tree model is very small. In order to improve the European and American options in trade course, the thesis tried to build early exercise European option and early termination American option pricing models. Firstly, the authors reviewed the characteristics of American option and European option, then there was compares between them. Base on continuous-time American option pricing model, this research analyzed the value of these options.

关键词： option pricing early exercise European option pricing early termination American option pricing

The clinical relevance of MBL2 gene polymorphism and sepsis

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Asian Pacific Journal of Tropical Medicine 2018年第3期11卷 251-254页

作者： Shao-Wen Cheng li-Na Xian Zhi-Xing lin Xue Ao Jun-Yi Yao Ying-Qing li yong-yan li Xiu-Ru li Wei-Cheng Wang Chuan-Zhu Lyu Ying li Nanjing Medical University NanjingJiangsuChina Trauma Center The First Affiliated Hospital of Hainan Medical UniversityHaikou HainanChina Intensive Care Unit The First Affiliated Hospital of Hainan Medical UniversityHaikou HainanChina Intensive Care Unit Haikou Hospital Affiliated to Xiangya School of MedicineCentral South UniversityHaikou HainanChina hainan medical university Haikou 571199HainanChina

Objective:To detect the clinical relevance of mannose-binding lectin 2(MBL2) gene polymorphism and sepsis in Chinese lived in Hainan ***: Blood samples from 57 patients with sepsis and 69 patients without sepsis were collected in the ICU of several large hospitals in Hainan province. Genomic DNA was extracted from whole blood and then PCR purification product was sequenced and typed by 3730 sequencing analyzer. The concentration of MBIL2 in serum was detected by ***: We found that genotype and allele distributions in two groups were in accordance with the Hardy-Weinberg Equilibrium. The frequency of GA genotype was significantly higher than that in non-sepsis group(P=0.013). A allele frequency in sepsis group was also much higher than that in non-sepsis group(P=0.028).Logister regression analysis showed that the patients who carried A allele were more prone to get sepsis than G allele carrier(P=0.014, OR=2,550, 95%CI=1.207-5.386). The MBL2 level in serum of sepsis patients with genotype GG and GA was significantly lower than that in non-sepsis group(P<0.05). In sepsis group, the MBL2 serum level of patients with genotype GA was obviously lower than that in patients with genotype GG(P<0.05).Conclusions: The variation of rs 1800450 G→A increased the incidence of sepsis and decreased the level of MBL2 in serum.

关键词： Mannose-binding lectin 2 Polymorphism Sepsis

Design and simulation about a self-Tuning fuzzy-PID controller

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重庆邮电大学学报（自然科学版） 2009年第2期21卷 192-195,227页

作者： ZHANG Yi FU Wen-yong li yan-hua DENG Hao-wen liU Hong-chang Research Center of Intelligent System and Robotics Chongqing University of Posts and Telecommunications Chongqing 400065 P. R. China

Fuzzy logic has attracted the attention of structural control engineers during the last few years,because fuzzy logic can handle nonlinearities,uncertainties,and heuristic knowledge effectively and *** this paper,a self-Tuning fuzzy-PID control method which used the technology of the fuzzy control and PID control unified is *** techniques can visualize the results and processes for structure *** techniques will also provide convenience for engineers and users,and have high practical *** MATLAB simulation result shows that the system precision and the efficiency are very high and the static error is small,and robustness was also validated.

关键词： PID控制器模糊逻辑仿真结果自调整模糊PID控制设计 Matlab 启发式知识

不同结构表面活性剂在有机非水相中的发泡性能研究

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日用化学工业 2019年第7期49卷 435-440页

作者：燕永利西安石油大学化学化工学院

研究不同有机非水相溶剂在不同结构类型表面活性剂作用下的起泡性能。利用泡沫衰减法测定不同有机非水相溶液体系的发泡体积和泡沫稳定性,并分析其表面张力、黏度、溶剂极性对有机非水相溶液体系起泡性能的影响。结果表明,无论阴离子、... 详细信息

研究不同有机非水相溶剂在不同结构类型表面活性剂作用下的起泡性能。利用泡沫衰减法测定不同有机非水相溶液体系的发泡体积和泡沫稳定性,并分析其表面张力、黏度、溶剂极性对有机非水相溶液体系起泡性能的影响。结果表明,无论阴离子、非离子,还是两性表面活性剂在正构烷烃和芳香烃溶剂中均不起泡,只有部分在液体石蜡和甘油中产生泡沫。液体石蜡和甘油中所形成的泡沫含气率分别为66.6%~83.3%和72.2%~83.7%,半衰期分别为0.21~1.44min和1.79~16.69min,其中发泡剂AEO-3和OBS分别在液体石蜡和甘油溶剂中发泡性能较佳。研究发现有机非水相溶剂极性越大,其溶液起泡性能愈佳;而有机非水相表面活性剂溶液黏度仅与泡沫稳定性有关,非水相溶液体系表面张力的降低与其发泡性能之间未能展现出密切的关联。

关键词：表面活性剂有机非水相溶剂溶剂极性起泡性能稳定性

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层状液晶凝胶对微泡沫的稳定作用

高等学校化学学报 2011年第11期32卷 2598-2604页

作者：燕永利邓强孟梅西安石油大学化学化工学院西安710065

以非离子表面活性剂单硬脂酸甘油酯(GMS)制备出稳定的微泡沫.采用偏光显微镜、冷冻断裂蚀刻透射电子显微镜(FF-TEM)、差示扫描量热仪(DSC)和流变仪对其表面活性剂溶液相态、泡沫体系的微观结构、相变行为和流变性进行研究以探索微泡沫... 详细信息

以非离子表面活性剂单硬脂酸甘油酯(GMS)制备出稳定的微泡沫.采用偏光显微镜、冷冻断裂蚀刻透射电子显微镜(FF-TEM)、差示扫描量热仪(DSC)和流变仪对其表面活性剂溶液相态、泡沫体系的微观结构、相变行为和流变性进行研究以探索微泡沫的稳定机理.实验结果表明,表面活性剂分子吸附在气泡界面,发生晶化形成有序、紧密排列的层状液晶凝胶相液膜,该液膜具有较强的刚性,能抵抗由Laplace附加压力驱使的气泡溶解和聚并行为.微泡沫可稳定10个月,无明显的相分离和气泡破裂现象.其稳定作用机理是通过影响泡沫排液过程,增强Gibbs-Marangoni效应,从而提高了气泡液膜强度,减缓了气相扩散速率.

关键词：微泡沫稳定性层状液晶 α-凝胶聚凝胶

胶质液体泡沫(CLA)的形成及其稳定性研究

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化学学报 2006年第1期64卷 54-60页

作者：燕永利张宁生屈撑囤刘立高永利西安交通大学能源与动力工程学院西安710049 西安石油大学石油工程学院西安710065 西安石油大学化学化工学院西安710065 长庆石油勘探局工程技术研究院西安710021

以研究胶质液体泡沫(CLA)内部结构及其特性为最终目的,对组成为十二烷基醇聚氧乙烯(3)醚(AEO-3)/正癸烷/十二烷基硫酸钠(SDS)/水的CLA体系形成过程和稳定动力学行为进行了电导率测定和光学显微观察.通过上述两过程的电导率变化探明了CL... 详细信息

以研究胶质液体泡沫(CLA)内部结构及其特性为最终目的,对组成为十二烷基醇聚氧乙烯(3)醚(AEO-3)/正癸烷/十二烷基硫酸钠(SDS)/水的CLA体系形成过程和稳定动力学行为进行了电导率测定和光学显微观察.通过上述两过程的电导率变化探明了CLA的形成和稳定性动力学行为,并被光学显微照片所证实.实验结果表明CLA的形成是一个低能量乳化过程,经历了水相泡沫化→油相替代气泡乳化→CLA形成.在整个乳化过程中,没有发生相的转变现象,CLA呈O/W型乳状液.其稳定性并不遵守一级动力学模型.在常温下,其电导率曲线呈直线关系;当温度超过318.15σ1-σ2K时,其电导率曲线近似于Langmuir等温线形.并可用Sigmoidal模型σt=1+e(t?t0)/S+σ2较好的拟合,式中,σt表示t时的电导率值(μS/cm);t表示时间(min);σ1,σ2分别代表存储过程中电导率最小值和最大值(μS/cm);t0对应于σt等于1(σ1+σ2)的时间t值(min);S描述了电导率曲线陡峭程度(min).并提出了CLA的破乳过程包括液膜排液和液膜破裂两2个阶段,同时伴随有絮凝过程发生的稳定性机理.

关键词：胶质液体泡沫(CLA) 形成稳定性电导率光学显微镜