The liquid state     

K. R. Rao 《Resonance》1997,2(6):54-59

The liquid state of matter is of great practical importance. The arrangement of atoms in a liquid is more disordered than in a crystal, and can be studied by the scattering of X-rays. This disordered arrangement is described statistically by the pair correlation function g(r), which gives the relative probability of an atom having a neighbour at a distance r.  相似文献   

公共消费与私人消费矛盾性分析——以私人小汽车发展为例     

邓智平  饶怡 《广东白云学院学刊》2005,(2):64-66

文章认为，公共消费与私人消费之间存在着一种矛盾和冲突。从消费者个体理性出发的私人消费会导致社会整体的无理性，这种整体的无理性本质上是一种市场的失灵。作为整体理性代表的国家应该在消费者个人理性失效的情况下迅速介入，其介入的方式就是通过发展公共消费来替代那些导致社会整体无理性的私人消费，从而实现社会的整体理性。  相似文献   

三维设计系统中零部件虚拟装配及运动仿真   总被引：2，自引：0，他引：2  

饶刚  刘莺  罗会信 《武汉工程职业技术学院学报》2003,15(1):18-22

借助虚拟装配技术及运动仿真技术，在产品的设计阶段就可以清楚地了解设计结果的装配性能及其运动状况。本文主要讨论了建立在零部件分层装配技术基础之上的虚拟装配技术，以及建立在参数化技术之上的运动仿真，同时以起重机为例介绍了在三维系统中的分层装配和运动仿真的实现过程。  相似文献   

高职院校哲学教学的几点思考     

魏宏霞 《辽宁高职学报》2005,7(4):108-109,114

高职哲学教学重在培养学生的问题意识，使学生学会思维，重在对学生内心精神的启蒙与滋养，引领学生走进真善美合一的境界，重在培养学生反思和批判的思维能力，变盲目被动接受的思维为自觉主动分析的思维，构建反思和批判的思维方式。  相似文献   

A review of key parameters for effective electrophoretic deposition in the fabrication of solid oxide fuel cells     

Isyraf Aznam  Joelle Chia Wen Mah  Andanastuti Muchtar  Mahendra Rao Somalu  Mariyam Jameelah Ghazali 《浙江大学学报(A卷英文版)》2018,19(11):811-823

This paper reviews recent progress in electrophoretic deposition (EPD), particularly in solid oxide fuel cells (SOFCs). EPD is a simple, cost-effective, and geometrical flexible colloidal process. With its excellent control of thickness and other morphological characteristics, it is favored for the fabrication of SOFCs because each component layer of an SOFC has different requirements. However, the effectiveness of EPD is closely related to the suspension stability and EPD processing parameters. Maintaining a stable suspension and optimizing the EPD processing parameters are essential to achieve a dense and uniform deposition layer. Key parameters in maintaining the suspension stability are generally categorized into colloidal related parameters, including particle size and solid loading, and suspension media related parameters, including dielectric constant and conductivity. The effects of these parameters are often reflected by the zeta potential of the suspension, which can be manipulated by using charging agents to maintain a stable state. The deposition time and applied voltage are key parameters in optimizing the EPD process through their effects on the deposition rate. The effects of these parameters on particle surface charges and on the EPD mechanism are discussed.  相似文献   

《高等代数》课程内容的数学方法论分析     

饶鑫光 《河池学院学报》1999,(4)

本文分析了《高等代数》课程内容中数学方法论的运用和表现,指出了《高等代数》课程的教材编写和教学过程体现数学方法论原则的必要性和重要性。  相似文献   

国际教育领域学习投入度研究的焦点与转向     

万昆  饶宸瑞  徐如梦 《现代教育技术》2021,(4):36-43

文章以Web of Science数据库2010~2020年收录的学习投入度方面的1355条文献数据为样本,通过知识图谱进行可视化分析,探究国际教育领域学习投入度研究的焦点与未来转向,结果发现:国际教育领域学习投入度研究主要围绕学习投入度内涵分析和本质探索、学习投入度作用机制的实证研究、提升学习投入度的方式和路径探究、学习投入度的测量和评估四个焦点问题;随着学习科学、脑科学、智能技术等的兴起,学习投入度研究将转向寻求学习投入度研究的跨学科与本土化平衡、人工智能技术赋能学习投入度的研究、重视学习投入度多源数据分析及其影响因素研究等三个方面。研究有助于从整体上了解教育领域学习投入度的国际进展和前沿趋势,以期为我国教育领域的学习投入度创新发展提供参考。  相似文献   

扎根理论视角下的宋城景区游客感知研究     

饶晓娟  曹健 《黄冈职业技术学院学报》2021,(2):82-85

本研究以携程网上宋城景区的游客在线评论为研究样本,结合扎根理论与NVivo研究方法,提取六个核心编码旅游吸引物、景区管理、景区服务、景区环境、服务设施、游客体验来分析智慧景区建设中游客感知情况,从智慧管理、智慧服务、智慧体验、智慧营销、智慧交通和设施等五个方面优化调控,赋予景区文化旅游新内涵,促进智慧景区提升文旅融合水平。文化需求是旅游的内在动因,旅游过程中游客更加重视文化体验和享受,旅游景区的文化古韵、人文风情、传统特色等,都可以发挥文化的驱动力。  相似文献   

Lipoprotein (A): Better assessor of coronary heart disease risk in south Indian population     

D. Rajasekhar  K. S. S. Saibaba  P. V. L. N. Srinivasa Rao  S. A. A. Latheef  G. Subramanyam 《Indian journal of clinical biochemistry : IJCB》2004,19(2):53-59

In an attempt to search for risk factors which can explain the increasing prevalence of coronary heart disease (CHD) in Indian population, we conducted a case-control study to assess the association of Lipoprotein (a)(Lp(a)) with CHD. One hundred and fifty one consecutive patients with clinical and angiographic evidence of CHD and forty-nine healthy controls were drawn for the study. Triglycerides, very low density cholesterol (VLDL-C), total cholesterol (total-C)/high density cholesterol (HDL-C) ratio, low density cholesterol (LDL-C)/HDL cholesterol ratio and Lp(a) were found to be higher in patients than controls. In female sex and in those with family history of CHD, higher total and LDL cholesterol levels were observed to be associated with higher Lp(a) levels. Lp(a) levels were also found to be higher in triple vessel disease than other vessel disease patients. Significant difference in Lp(a) levels were observed between normal coronaries vs. single and triple vessel disease(P<0.05) and also between single vs. double and triple vessel disease (P<0.01).Lp(a) levels correlated positively with vessel severity(P<0.005). Lp(a) levels >25 mg/dl were associated with coronary heart disease (Odds ratio 1.98 P<0.05 95% CI 0.007–1.18). Our findings suggest a cut-off level of 25mg/dl for determination of risk of CHD. Studies from different areas involving larger sample size are needed to confirm the findings of the present study.  相似文献   

Edidence for oxidant injury in patients with postdiarrhoeal acute renal failure     

P. V. L. N. Srinivasa Rao  K. V. Dakshinamurty  K. S. S. Saibaba  M. Vijayabhaskar  P. V. L. N. Murty  S. Surjit  J. G. Ambekar  L. Jayaseelan 《Indian journal of clinical biochemistry : IJCB》1996,11(1):66-69

Oxygen free radicals have been implicated in the pathogenesis of ischaemic acute renal failure (ARF). The evidence for this is mainly drawn from studies on experimental models. There are no such studies in postdiarrhoeal ARF, which is common in India and forms an ideal human model of ischaemia-reperfusion injury to the kidney, to confirm the observations made, in experimental models. 12 patients with postdiarrhoeal ARF and 15 healthy volunteers were included in the study. In patients with ARF, plasma lipid peroxides (LPO), superoxide dismutase (SOD), plasma iron and plasma ferritin were significantly increased when compared to controls. Plasma glutathione peroxidase levels were significantly lower in the patients with postdiarrhoeal ARF. All these changes persisted at the end of one week. The results of the study strongly suggest the role of reactive oxygen species in the production of postdiarrhoeal acute renal failure as a result of ischaemia-reperfusion injury that occurs in patients with diarrhoeal illness on fluid replacement therapy. This study helps in providing the markers to monitor antioxidant therapy as a preventive as well as therapeutic measure in cases of postdiarrhoeal acute renal failure.  相似文献