雌激素受体(ER)与基因蛋白(P53、erbB-2)在胃癌中表达的研究

目的:探讨ER、erbB-2和P53在胃癌表达及相关性。方法:取胃癌手术标本119例,SP免疫组织化学染色。结果:ER、erbB-2和P53在胃癌表达率分别为63.87％,75.51％和73.11％;三者同时阳性者31.93％;ER与P53同时阳性者37.82％;ER与erbB-2同时阳性者33.61％;ER在高分化组阳性率高于低分化组(P<0.05);而erbB-2和P53在低分化组阳性率高于高分化组。70岁以上组P53、ER和erbB-2表达率均较高。结论:ER、P53和erbB-2在胃癌中表达率与癌瘤分化程度相关。P53和erbB-2有相关性,而且它们是胃癌预后不良的指标。     

2-（1，2-亚乙／1，3-亚丙二硫）亚甲基-3-羰基-N-芳（烷）基丁酰胺制备的新方法

以易制备的2-（1,2-亚乙／1,3-亚丙二硫）亚甲基-3-羰基丁酸1为原料,经与氯化亚砜的氯化反应后,与胺反应成功地以较好产率（40．5％-72．0％）合成重要的有机合成中间体2-（1,2-亚乙／1,3一亚丙二硫）亚甲基-3-羰基-N-芳（烷）基丁酰胺3．     

基于粒子群优化算法的散乱数据光顺拟合

在散乱数据光顺拟合问题的计算中,引入了群体智能粒子群优化算法,增加了计算的自动程度以及客观性,优化中提出了优于传统罚函数法的模糊罚函数法,将模糊集合理论和粒子群优化算法有机地结合起来,并通过对节点序列内在关联性的分析,提出了适合邻域搜索类算法实施的邻域结构,以获得目标函数的全局解,最后给出了数值仿真实例。     

Polychlorinated dibenzo-p-dioxins and dibenzofurans in flue gas emissions from municipal solid waste incinerators in China

Polychlorinated dibenzo-p-dioxins and furans （PCDD/Fs） emissions in flue gas from two types of municipal solid waste incinerators （MSWIs） most commonly used in China were investigated in this study. The selected incinerators include two grate-type MSWIs： MSWI-A （350 t/d） and MSWI-B 050 t/d）, and two fluidized bed MSWIs： MSWI-C （400 t/d） and MSWI-D （400 t/d）, which are all equipped with semi-dry lime scrubber and bag filter except MSWI-D equipped with cyclone and wet scrubber （WS） as air pollutant control device （APCD）. Results indicated that the emission concentration and the international toxic equivalents （I-TEQs） of the PCDD/Fs from the stacks were in the range of 1.210-10.273 ng/Nm^3 and 0.019-0.201 ng I-TEQ/Nm^3, respectively. They were greatly lower than the emission regulation standard of PCDD/Fs in China （1.0 ng I-TEQ/Nm^3）. However, only the PCDD/Fs emission level from MSWI-C was below 0.1 ng I-TEQ/Nm^3. Although the homologue profiles were distinct, the contributions of the 2,3,7,8-subsituted congeners to the total I-TEQ were similar among all the investigated MSWIs. Two major 2,3,7,8-substituted congeners, 2,3,4,7,8-PeCDF and 1,2,3,7,8-PeCDD, account for 47% and 9% （average values） of the total I-TEQ values, respectively. The correlation between PCDD/Fs levels and composition of flue gas was also discussed.     

6-甲基-2-（α-羟甲基）-1H-苯并咪唑荧光增敏探针法测定蛋白质

以6-甲基-2-（α-羟甲基）-IH-苯并咪唑（MHMBM）作为荧光探针,利用蛋白质对MHMBM荧光增敏作用,建立了测定人血清总蛋白的新方法。结果表明,在中性水溶液中,MHMBM的荧光强度与牛蛋白（BSA）的浓度呈良好的线性关系,相关系数（r）为0．9995,检出限2．3μg／mL,线性范围4．6—60．0μg／mL。本方法用于测定两种样品溶液中的总蛋白,RSD（n=6）分别为1．7％和1．3％,回收率95．5％和98．6％。     

地方高校实验教学示范中心建设的研究与实践

高等学校实验教学示范中心将引领我国高校实验室建设和实验教学改革的发展趋势,国家级实验教学示范中心建设被列为教育部本科教学质量工程之一,作为地方高校如何创建省级和国家级实验教学示范中心,文中提出了多出精品,创出特色的建设思路。     

Attrition resistant catalyst for dimethyl ether synthesis in fluidized-bed reactor

Fluidized-bed reactor is a candidate for dimethyl ether （DME） synthesis from syngas because of its excellent heat removal capability. In order to improve the attrition resistance of catalyst, an amount of silica sol as binder was added to the catalyst composed of methanol synthesis component CuO/ZnO/Al2O3 and methanol dehydration component HZSM-5, which was prepared by coprecipitation and shaped by spray drying to get spherical particles. The effect of silica sol on the catalytic activity was investigated in a fixed-bed flow microreactor. Based on the experiment results, silica sol in the range of 0-20wt% had small effect on the catalytic activity. Generally, the CO conversion and DME yield decreased with the increase in concentration of silica sol, while the attrition resistance of catalysts increased with increasing silica sol, indicating that it was feasible to improve the attrition resistance without greatly sacrificing the activity of catalyst. In addition, the characterizations of catalysts were carried out using Brunauer-Emmett-Teller （BET）, X-ray powder diffraction （XRD） and temperature programmed reduction （TPR）.     

衬底状态及热处理对Sm-Fe GMFs磁致伸缩性能的影响

采用IBS法在锡青铜衬底上溅射沉积Sm-Fe非晶态超磁致伸缩薄膜,研究衬底的表面状态和薄膜热处理对Sm-Fe薄膜磁致伸缩性能的影响.实验结果表明,锡青铜衬底状态对Sm-Fe超磁致伸缩薄膜磁伸性能有很大影响.样品经过200℃真空热处理后,100 mT内dλ/dH值从制备态Sm-Fe薄膜的0.71×10-3 T-1提高到2.48×10-3 T-1,薄膜低场磁敏性得到显著提高.     

中国农业经济增长的制度分析

本运用新制度经济学的分析方法，提出了中国农业经济增长的一个理论模型，指出农地制度安排是影响农业经济增长的重要因素。在此基础上，分析了家庭联产承包经营责任制对农业经济增长的重大贡献，同时指出，作为一项制度创新，实现集体经济和规模经营是中国农地产权制度改革的趋势和方向，并对中国农业经济增长具有重大意义。     

论《白鹿原》三段论手法的美学意义

三段论是学创作中的一种审美叙事手法。《白鹿原》成功地将传统故事叙事三段原理创化为审美三段论。人物塑造三段论在发展中塑了鲜活的人物形象,展示出复杂的人物性格,挖掘出人物命运的悲剧意义;情节演进三段论通过丰富复杂的意象情节变化强化了作品的可读性,探寻到人物的心路走向,展示出广阔的社会生活和历史真实;主题意蕴三段论在社会事物的互动发展中揭示了民族化心理的演变轨迹,反思和建构了民族化。