春秋时节对SD大鼠免疫功能的影响

目的:探讨春秋季节对SD大鼠免疫功能影响的内在机制,为呼吸系统的病理生理机制提供实验依据。方法:采用松果腺摘除大鼠模型,测定春秋二分大鼠脾脏指数和胸腺指数、肺泡巨噬细胞吞噬功能。结果:①生理组和伪手术组脾脏指数和胸腺指数,秋分明显低于春分,差异有显著性(P<0.05,P<0.01);手术组春分和秋分时差异不显著。②生理组肺泡巨噬细胞吞噬功能秋分明显低于春分,差异有非常显著性(P<0.01);伪手术组与手术组春分和秋分比较,差异均无显著性。结论:①SD大鼠脾脏、胸腺、肺泡巨噬细胞吞噬功能存在秋低春高的季节节律。②SD大鼠松果腺褪黑素是免疫功能季节性节律变化的中介物质基础。     

论被刑事羁押者的会见交流权

被刑事羁押者的会见交流权具有人身自由权与诉讼权的双重性,必须由刑事法律加以确认和保障。会见交流权包括与律师之间的会见交流和与家属、其他人员之间的会见交流。作为刑事司法国际准则的调整重点,被羁押的少年犯罪嫌疑人、被告人的会见交流权也应得到国内法的关注。对会见交流权的合理的限制是必要的,但必须遵守一定的条件并以例外为原则。我国刑事司法中犯罪嫌疑人、被告人会见权的确认与保障只能在刑事诉讼理念和刑事司法制度的整体重构中得到个别化的实现。     

信息化时代产业结构的演进规律研究

信息化时代,由于各个国家面临不同的外在约束条件,其产业结构升级呈现出不同的演进规律：一是产业结构升级的一般性或渐进式升级,二是产业结构升级的特殊性或跨越式升级。创新成为信息化时代产业结构演进升级的内在实现机制。     

An interlaboratory study to evaluate the utility of gas chromatography-mass spectrometry and gas chromatography-infrared spectroscopy spectral libraries in the forensic analysis of fentanyl-related substances

Synthetic opioids such as fentanyl account for over 71,000 of the approximately 107,000 overdose deaths reported in the United States in 2021. Fentanyl remains the fourth most identified drug by state and local forensic laboratories, and the second most identified drug by federal laboratories. The unambiguous identification of fentanyl-related substances (FRS) is challenging due to the absence or low abundance of a molecular ion in a typical gas chromatography-mass spectrometry (GC-MS) analysis and due to a low number of fragment ions that are similar among the many potential isomers of FRS. This study describes the utility of a previously reported gas chromatography-infrared (GC-IR) library for the identification of FRS within a blind, interlaboratory study (ILS) involving seven forensic laboratories. Twenty FRS reference materials, including those with isomer pairs in the library, were selected based on either their presence in the NIST library and/or some similarity of the mass spectra information produced. The ILS participants were requested to use the Florida International University (FIU) GC-MS and GC-IR libraries supplied by FIU to search for matches to their unknown spectra generated from in-house GC-MS and GC-IR analysis. The laboratories reported improvement in the positive identification of unknown FRS from ~75% using GC-MS alone to 100% correct identification using GC-IR analysis. One laboratory participant used solid phase IR analysis, which produced spectra incompatible with the vapor phase GC-IR library to generate a good comparison spectrum. However, this improved when searched against a solid phase IR library.     

Effects of obesity on talar micro- and macro-morphology

The addition of information regarding obesity status to the forensic anthropological biological profile could significantly contribute to the identification of human skeletal remains since over 40% of the U.S. adult population is currently obese. This study examines the differences in talar shape and trabecular bone structure between obese and non-obese individuals. A sample of 20 obese and 20 non-obese divided evenly by sex was selected from the Texas State University Donated Skeletal Collection. Tali were imaged using x-ray computed tomography (voxel size: 28–38.7 μm). Image stacks were processed to produce binary images as well as trabecular thickness and spacing maps. Landmark-based geometric morphometric analyses were conducted to quantify shape variation. Shape coordinates were used to locate 100 geometrically homologous volumes of interest within each talus. Bone volume fraction, trabecular thickness, and trabecular spacing were extracted at each volume of interest. Within each sex, a one-way ANCOVA was used to determine if significant differences exist between obese and non-obese individuals in trabecular bone after controlling for age. The size of the talus as well as subtle aspects of shape were found to distinguish the sexes. The results further indicate that bone volume fraction significantly differs between obese and non-obese males. In females, bone volume fraction is correlated with age but does not differ between obese and non-obese. The study demonstrates that bone microstructure is a promising approach to estimating body mass or body mass index category but age effects diminish the potential for the talus to be used alone.     

经管类高职院校产学研结合的途径探析

产学研结合是高等职业教育发展的必然。进行产学研结合对培养应用型人才、提高教师素质和完善专业建设都有着重要意义。经管类高职院校可以从办学模式、教学活动、服务咨询、参与企业生产经营等方面开展产学研结合工作。     

我国资本市场信息供求机制探讨

信息是资本市场的"轴心"和"生命,"资本市场是信息最重要、信息最集中、信息最不对称、信息时效性最强、信息价值体现最充分的市场。信息在资本市场的重要性要求我们研究信息供给、需求和流通问题,建立一个完善的信息运行系统,以减缓资本市场信息不对称程度,实现资本市场的公平交易和有序运行。     

20世纪80年代以来的回族女性研究述评

回族女性研究是回族研究的重要组成部分,但与其他研究相比,无论从理论上、方法上,还是从研究范围、研究内容上都显得较为薄弱。近几年来,回族女性研究取得了很大的发展,本文以历史为线索,回顾回族女性研究的曲折道路,在追溯中总结其成功的经验,反思其存在的不足,在反思中探索回族女性研究的新方法、新视野。     

金大中"阳光政策"的两难处境与当前的朝鲜半岛形势

由于"9.11"事件的发生,美国的军事外交战略发生了的重大变化,而布什在今年1月29日发表的"国情咨文"中又公开点名朝鲜,伊拉克,伊朗为"邪恶轴心",从此朝鲜半岛的形势开始震荡起来.韩国政府和美国布什政府在朝鲜半岛问题上产生了裂痕.本文分析了金大中"阳光政策"遇到的困难和朝鲜半岛形势的症结所在以及可预见的前景.