历史唯物主义研究要为中国特色社会主义服务

作为工人阶级的世界观和方法论,是马克思主义哲学的根本特质.这决定了马克思主义哲学必然是有阶级性、实践性和鲜明的党性立场的,也决定了共产党必然要以马克思主义哲学作为世界观基础.这是一种命运共同体的关系:没有马克思主义,就没有科学社会主义和现代化工人运动,而没有科学社会主义运动,也就没有马克思主义哲学的生存和发展.历史唯物主义研究要为中国特色社会主义服务,这是由历史唯物主义的根本特质所决定的.     

继续发扬光大爱国主义传统

爱国主义是对祖国的深厚情感、理性认知和为祖国无私奉献的坚定立场和行为.在当代,爱国就是热爱社会主义祖国.今年正值新中国成立六十周年,高校应及时把握这一契机,加强爱国主义教育,使爱国主义精神在青年学生中继续发扬光大.     

一个新的物理化学实验的发展历程

介绍一个新的物理化学实验--"二氧化碳pVT关系测定和临界状态观测"不断完善的发展历程和该实验的开设效果.     

虚拟技术在固体冲压发动机地面试验系统中的应用

在深入分析固体火箭冲压发动机试验系统的组成和参数特点的基础上,提出了发动机温度、压力、流量及其推力测量的总体方案和进气模拟总体控制方案.利用LabVIEW测量与自动化软件开发平台,开发了适用固体火箭冲压发动机试验推力、压力、流量和温度测量的数据采集软件.基于PID控制器开发了温度、压力调节控制软件,能根据试验要求自动地调节空气和燃油的流量,能实现进气温度、压力模拟和试验过程控制.开发了通用的温度、压力、流量、推力等物理量标定程序,并建立了相应的试验数据库.     

聚氨酯泡沫塑料应力-应变关系的试验与参数识别

介绍了获得聚氨酯泡沫塑料压缩状态下应力-应变关系的恒速加、卸载试验与参数识别的基本方法与过程.针对2种不同密度的聚氮酯泡沫塑料,以不同的速率做了恒速加、卸载试验,以遗传积分模型为例介绍了利用恒速加、卸载试验识别模型参数的方法,提出了进行试验数据预处理的线性插值法.     

Relationships between endothelial nitric oxide synthase gene polymorphisms and osteoporosis in postmenopausal women

Objective: To investigate the relationships between endothelial nitric oxide synthases (eNOS) G894T and 27 bp-variable number tandem repeat (VNTR) gene polymorphisms and osteoporosis in the postmenopausal women of Chinese Han nationality. Methods: In the present study, 281 postmenopausal women from Xi'an urban area in West China were recruited, and divided into osteoporosis, osteopenia, and normal groups according to the diagnostic criteria of osteoporosis proposed by World Health Organization (WHO). The bone mineral density (BMD) values of lumbar vertebrae and left hips were determined by QDR-2000 dual energy X-ray absorptiometry. Blood samples were tested for plasma biochemical indicators including testosterone, estradiol, calcitonin, osteocalcin, and procollagen type I amino-terminal propeptide by enzyme-linked immunosorbent assay (ELISA), tartrate-resistant acid phosphatase by spectrophotometric method, and the content of nitric oxide by Griess method. Genome DNA was extracted from whole blood, and G894T polymorphism of eNOS gene was analyzed by using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method and 27 bp-VNTR polymorphism of eNOS gene was genotyped by PCR method. Then the relationships between genotypes and biochemical indicators, genotypes and osteoporosis, and haplotypes and osteoporosis were analyzed. Results: The average BMD values of the femoral neck, ward's triangle and lumbar vertebrae 1～4 (L1～L4) in the subjects with T/T genotype in eNOS G894T locus were significantly higher than those in the subjects with G/T and G/G genotypes (P<0.05). The average BMD of the femoral neck in the subjects with a/a genotype of eNOS 27 bp-VNTR locus was evidently higher than that in the subjects with b/b genotype (P<0.05). The plasma testosterone and osteocalcin concentrations in the subjects of eNOS G894T G/T genotype were evidently higher than those in the subjects of other genotypes (P<0.05); the plasma estradiol concentration in the subjects of eNOS 27 bp-VNTR a/a genotype was obviously higher than that in the subjects of b/b genotype (P<0.01). eNOS G/G homozygous frequencies in osteoporosis women, osteopenia women, and normal women were 85.37%, 76.38%, and 83.87%, respectively (P＞0.05). 0% osteoporosis woman, 0.79% osteopenia women, and 3.23% normal women were eNOS a/a homozygous (P<0.05). The frequencies of eNOS 27 bp-VNTR a allele were 5.33% in the osteoporosis group, 10.24% in the osteopenia group, and 16.13% in the normal group (P<0.05, odds ratio (OR)=0.29, 95% confidence interval (CI)=0.11～0.77), suggesting that a/a genotype and a allele might have protective effects on osteoporosis. The haplotype analysis showed that G-b was 87.7% (214/244) in the osteoporosis group (P<0.05, OR=2AS, 95% CI=1.18～5.18). G-a was 5.3% (13/244) in the osteoporosis group (P<0.05, OR=0.29, 95% CI=0.11～0.77). G-b was a risk factor for osteoporosis, and G-a a protective factor. Conclusion: eNOS G894T G/T genotype influenced the plasma testosterone and osteocalcin concentrations, and T/T genotype influenced BMD. eNOS 27 bp-VNTR a/a genotype increased plasma estradiol concentration to have a protective effect on osteoporosis.     

机械设计制造及其自动化专业建设的实践与探索

本文针对大众化高等教育的办学思想和人才培养要求,对机械设计制造及其自动化专业建设的深层次问题进行了研究与探索,提出了具体的建设思路,取得了阶段性的成果.     

我国农业保险发展滞后的根源分析——以云南省的实地调研为例

农业保险是农户分散农业风险的一个重要工具,对保障农业生产、发展农业经济、稳定农民收入有着重要意义。但目前由于种种原因,我国农业保险发展滞后,地处西南地区的云南省的农业保险发展尤其具有典型性特征。本文通过对云南省相关地市的实地调查,分析了云南省农业保险发展困境以及可持续发展的局限性。基于此,同时结合我国农业保险发展现状及其主要特点,对我国农业保险发展滞后的深层根源进行了分析和论证。     

Multi-product total cost functions for higher education: The case of Chinese research universities

This paper empirically investigates the economies of scale and economies of scope for the Chinese research universities by employing the flexible fixed cost quadratic (FFCQ) function. The empirical results show that both economies of scale and economies of scope exist in the Chinese higher education system and support the commonly belief that universities as multi-product organizations.     

传统农业地区农业发展模式探讨——以贵州省从江县为例

现代农业在带来粮食高产的同时也造成难以治理的农业污染和生态环境破坏,因而现代农业发展开始转向保护生态环境、可持续的农业形式,出现了如有机农业、绿色农业等农业发展模式.传统农业地区一般处于经济落后的地方,往往还保持着传统农业生产方式,有着较好的农业生态环境.这些地区的农业发展不能再重复传统农业到现代农业再到有机农业的过程,但由于经济条件的限制也无法直接开发有机农业.贵州省从江县是一个典型的传统农业地区,生物资源、劳动力资源及生态环境有一定的潜在优势,但受耕地资源、经济资源及技术条件制约,从总体看,农业经济发展水平低.在这种情况下,从江县农业发展应根据其资源禀赋,因地制宜,引入有机农业思想,生产高品质农产品;发展特色农产品,加强产业化建设;引入生态农业思想,高效利用资源;发挥民族地区优势,发展农业生态旅游,丰富农业形式.同时,随着拥有"稻-鱼-鸭"共生系统的从江县侗族地区成为"全球重要农业文化遗产"保护试点之一--浙江省青田县的协作点,其农业发展将迎来新的发展机遇.