Geochemistry,soils and cardiovascular diseases

Summary The hypothesis is presented that deficiencies or excesses in the content or availability of trace elements in rocks and soils, or in water flowing through them, may be a possible cause of certain chronic diseases, including cardiovascular ones. The geographic distribution of cardiovascular diseases is often associated with geochemical differences. This trend is particulalry evident in the United States and in Europe, with higher rates for cardiovascular mortality in areas underlain by soils that are poor in most essential trace elements. Confirmation of this trends is found in connection with the degree of mineralization of local water supplies. Areas that are served by soft waters usually show higher rates of cardiovascular mortality and other forms of cardiovascular pathology, compared with the areas that are served by hard waters. Such a negative association between water hardness and cardiovascular pathology is evident in many countries, both industrialized and developing ones.     

Effects of carotid sinus nerve stimulation on respiratory sinus arrhythmia and respiratory blood pressure waves of the dog

Summary The effect on the amplitudes of RSA and RBPW of the time of the stimulus in the cardiac cycle, and also of continuous stimulation were studied. When the stimulus train was applied near peak systole the amplitudes of RSA and RBPW decreased. Stimulation in late systole increased both RSA and RBPW. Continuous stimulation did not exert any effects on RSA and RBPW.     

四君子汤对荷瘤小鼠红细胞免疫功能的影响

采用郭峰等人的方法,进行了四君子汤对荷瘤小鼠红细胞免疫功能影响的体内实验研究.结果表明:四君子汤能明显提高荷瘤小鼠的RBC-C3bRR和RFER,降低RBC-ICRR和RFIR.这一结果表明四君子汤对荷瘤小鼠红细胞免疫有显著的促进作用.     

公路边坡病害的土工试验数据拟合及编程

针对目前公路工程土工试验数据处理方法的不足，利用数据拟合原理和计算机可视化编程技术，对公路边坡病害研究中的土工试验数据进行分析，给出了多项式线性最小二乘拟合和三次B样条函数拟舍两种方法及计算机实现算法。以含水量分布规律为例，对两种方法进行验证。结果表明，两种方法的拟合曲线均较好地逼近原始试验数据折线，三次B样条函数的偏差更小一些，平均绝对值误差比多项式线性最小二乘平均绝对值误差小0．0539％。     

南京体育学院教职工2006年血液检测结果分析

目的:分析我院教职工血液检测结果,以便更好地做到疾病的早发现、早治疗;方法:对930名教职工进行抽血并检测其血脂、血糖、血尿酸;结果:930名教职工中血脂增高者占39.5%,血糖增高者占9.78%,血尿酸增高者占12.80%,40岁以上教职工的异常检出率明显高于40岁以下者;结论:饮食搭配不科学,生活无规律,缺乏体育锻炼和嗜烟酒等是导致教职工高血脂、高血糖、高血尿酸等“三高”现象的主要原因。     

骨髓增生异常综合征的中西医治疗

骨髓增生异常综合征(MDS)以难治性全血细胞减少和易转化为急性白血病为特征。患者的预后、合并症和年龄是决定治疗策略时必须考虑的因素。治疗策略经常以支持治疗为主,包括造血细胞生成因子、输注红细胞和血小板以及抗感染治疗。另外诱导分化、免疫抑制治疗、刺激造血、靶向治疗、化疗、异基因骨髓移植等根据具体病情选择应用。我们明确提出“气阴两虚,血瘀内阻”的中医复合证候为MDS临床主证,以“益气养阴活血”为治疗大法,制成“益髓颗粒剂”,进行了大量实验及临床研究,获得了确切疗效。     

燕雀和大山雀血细胞的比较研究

应用Wright染色法,显微观察燕雀(Fringilla montifringilla)和大山雀(Parus major)的血细胞的组成及形态学特征.结果表明,红细胞、血栓细胞及各类白细胞均能较好地被分辨.对其形态特征的测量发现,燕雀和大山雀的血细胞形态存在一定的差别,但区别不明显.这可能是与两种鸟类的体型类似、分类地位密切有关.     

具有发育阶段结构的野生与不育蚊子交互作用的数学模型

Using the sterile insect technique,in which sterile mosquitoes are released to reduce or eradicate the wild mosquito population,is an effective weapon to prevent transmission of mosquito-borne diseases. To study the impact of the sterile insect technique on the disease transmissions,we formulate stage-structured discrete-time mathematical models,based on difference equations,for the interactive dynamics of the wild and sterile mosquitoes. We incorporate different strategies for releasing sterile mosquitoes,investigate the model dynamics,and compare the impact of the different release strategies.Numerical examples are also provided to demonstrate dynamical features of the models.     

热环境下50米跑对学生心率血压的影响

目的：通过监测热环境下沈阳师范大学体育科学学院运动训练专业学生50米跑前后心率、血压变化,阐明热环境下50米跑对心率血压的影响。方法：在热环境下,先测定受试者安静心率、血压,进行50米跑,并分别测定跑后第一分钟、第二分钟、第三分钟的心率、血压。根据心率指数公式：N=S·∑P/t·P2计算出男女生的心率指数,将第一分钟、第二分钟、第三分钟的心率、血压分别与安静心率、血压进行比较,观察其变化规律。结果：（1）热环境下50米跑后3min男女生心率均显著高于跑前安静心率（P＜0.01）,且女生跑后心率恢复较慢;（2）热环境下男女生50米跑的心率指数分别为22.86±3.08和18.66±2.54;（3）热环境下男生50米跑后三分钟收缩压均显著高于跑前安静收缩压,女生跑后前2min收缩压显著高于跑前安静收缩压;（4）热环境下男生50米跑后前两分钟舒张压显著高于跑前安静舒张压;女生跑后3min舒张压均显著高于跑前安静舒张压。     

维生素D功能的再认识

维生素D(vitamin D)发现于20世纪20年代,它在临床上的成功应用彻底解决了少儿的佝偻病(rickets)和成年人的软骨症(osteomalacia)。对其结构解析发现,它属于脂溶性甾醇化合物。研究显示,维生素D不仅能调节机体内钙磷代谢的平衡,影响骨骼生长,而且还能调节机体的免疫功能及细胞增殖分化。由于维生素D具有多种生理功能,因此它的缺乏与多种人类疾病的产生和发展有关。在维生素D经典功能的基础上集中讨论了维生素D的新功能,尤其是在甲状旁腺激素合成、糖尿病以及癌症方面的作用。