Arterial stiffness in women previously with preeclampsia from a semi-rural region of South Africa

Women with pre-eclampsia have an increased risk of cardiovascular disease later in life. The aim of the study was to establish the presence and pattern of arterial stiffness in women previously with pre-eclampsia from a semi-rural region of South Africa. This was a prospective longitudinal study which involved 36 previously pre-eclamptic women and 86 non-pregnant controls (NPC) who had a past history of non-complicated pregnancy. Maternal wave reflection (augmentation index) and carotid-femoral pulse wave velocity were assessed noninvasively, using applanation tonometry with the SphygmoCor device. Endothelial function was assessed by EndoPAT 2000 device; pneumatic probes were fitted to the index fingers; induced flow-mediated reactive hyperemia; the ratio of the readings before and after occlusion was then used to calculate the score, the reactive hyperemia index (RHI) as a measure of endothelial function.

Pulse wave velocity remained significantly higher in previously pre-eclamptic women than non-pregnant controls up to three months after delivery (p < 0.05), then it reduced to nonsignificant values. All blood pressure indices (central and brachial pressures), were higher in previously pre-eclamptic women as compared to nonpregnant controls up to one year postpartum.

Regional (aortic) arterial stiffness, though it persists for some time after delivery, is transitory in previously pre-eclamptic women from the rural Africa setting. However, their increase blood pressure is an indication of compromised arterial compliance in women previously with pre-eclampsia.     

水稻亚种间杂种优势利用研究

本试验探讨了华南双季稻区利用亚种同杂种优势的特点和问题,结果表明:当前,两系亚种问杂种一代主要存在的问题是结实率低和谷草比低;籼粳交杂种易受环境条件的影响;每穗实粒数和单株有效穗数是决定单株产量的重要因子;每穗实粒数增加的关键在于结实率的提高,本文还就提高结实率和谷草比等问题提出了意见。     

输尿管梗阻合并急性肾盂肾炎的治疗(附12例临床报导)

目的:探讨输尿管梗阻合并急性肾盂肾炎的治疗方案。方法:对12例由于不同原因引起输尿管梗阻合并急性肾盂肾炎的患者,根据不同情况给予置管引流,置管碎石,肾盂穿刺引流,加有效的抗生素治疗。结果:12例输尿管梗阻合并急性肾盂肾炎患者感染得到有效的控制,为后续治疗提供保障。结论:及时置管引流或尿流改道解除梗阻加有效的抗生素治疗是治疗输尿管梗阻合并急性肾盂肾炎的有效方案。     

医用磷酸钙骨水泥的制备及性能的实验研究

探索了磷酸四钙（Ca4（PO4）2O，TTCP）的制备，并合成了磷酸钙骨水泥（CPC），对CPC固化时间、引起浸泡液pH值的变化、抗压强度、产物物相组成及微观结构进行了研究。结果表明：在真空条件下、1500℃下煅烧6h可制得TTCP，并含有少量CaO。CPC初凝时间为4min、终凝时间为15min，浸泡1d和7d后的抗压强度分别为20MPa和35MPa，浸泡液的pH值在6．4～8．9之间变化，这些性能均符合临床用CPC的性能要求。CPC水化产物为片状或针状羟基磷灰石（Ca5（PO4）3OH，HA），相互交错呈连续分布的网状结构，这种结构有利于材料强度的提高。实验研制的CPC材料可用于骨缺损的修复治疗。     

自制IPS-Empress2铸瓷快速包埋材料的膨胀特性研究

IPS—Empress2铸瓷是国内外广泛应用的全瓷修复系统。为取代昂贵的进口专用包埋材料，国内已自制出与之相配套的快速包埋材料。本文研究的是其最关键的膨胀特性。采用千分尺位移计和热机械分析仪，分别测量了进口专用快速包埋材料和自制快速包埋材料的凝固膨胀及热膨胀性能，进行了统计分析和比较。结果显示，进口专用快速包埋材料的凝固膨胀率、热膨胀率和总膨胀率分别为0．858％、1．11％和1．17％；自制包埋材料的上述指标分别为0．798％、1．09％和1．16％，三项指标均无统计学差异，表明自制快速包埋材料的膨胀性能指标接近IPS—Empress2专用快速包埋材料，能满足IPS—Empress2铸瓷精密铸造的要求。     

关于英语特色班双语教学课程设置的调查

根据学校实际情况,在2005年制订药学专业(英语特色班)人才培养方案时,药科学院院为该专业的学生设置了多门双语教学课程,这是一个大胆的尝试。虽然目前,我国绝大多数高校都已开设了双语教学课程,但是由于师资、学生、课程性质、教材、管理等各种因素水平不同,导致双语教学在实施过程中面临较多的问题。为了缓解矛盾,构建适合学校校情的双语教学课程体系,探寻学生欢迎的双语教学模式,笔者对学生进行了问卷调查及访谈,了解学生对开展双语教学的态度及对设置、师资、教材等要素的要求。     

深圳市南山区学生课桌椅配置整改效果分析

[目的]了解深圳市南山区中小学校课桌椅使用卫生状况,及时调整不合理配置。[方法]根据GB/T3976-2002《学校课桌椅功能尺寸》标准监测35所学校,进行问卷调查和工作检查,分析所得数据。[结果]经过专项整改,课桌椅配置符合率、学校对此项工作重视程度、家长和老师相关知识及态度有明显改善。[结论]使用不合适的课桌椅可能影响学生健康,改变目前学生课桌椅合格率较低的现状,关键是要提高重视程度。     

People and Places: some factors in the alcohol-violence link

The possible association between heavy drinking and intoxication with aggression and violence has been debated for centuries. A select and concise review of some of the evidence on this topic will be presented. This seeks to draw some general conclusions from an extensive, flawed and often contradictory literature. The main focus of this review is on social and contextual factors. Experimental evidence suggests that alcohol consumption probably does increase the propensity for aggression in men, but less so for women. The effects of drinking depend upon the alcohol consumed, the drinker and the setting in which consumption occurs. Most drinking occasions do not result in aggression or violence, and drinking is neither necessary nor sufficient to cause violence. Heavy and inappropriate drinking is associated with both violent and nonviolent crimes; heavy and problem drinkers are at risk of being violent or of being the victims of violence. Experience of violence (including sexual abuse) in childhood or later in life are associated with the development of heavy or problem drinking. The risk of exposure to violence is influenced by a host of demographic, lifestyle and contextual factors. Responses to alcohol-related violence at the societal level involve a number of harm minimization strategies. At an individual level it has been shown that treatment for problem drinking can lead to reduced risk levels (for both perpetrators and victims of violence).     

A Comparative Study of Physical Properties of Gypsums Manufactured in India

Gypsum products are one of the most widely used materials in dentistry. The wide use of plaster of paris motivated a number of manufacturers to introduce different brands of the profession but their physical and mechanical properties were still questionable. The aim of this study was to access, compare and evaluate the physical properties of different brands of laboratory gypsum available in Indian dental market. Seven brands namely Calspar, Rajhans, Elephant, Horse, Lion, Johnson and Shree Niwas Chemicals were selected for the comparison of their particle size, consistency and setting time. The obtained data were tabulated and compared with Indian, Australian and US standard specification. Statistical analysis for comparative study was done. It was found that none of the brands were up to mark. The present study shall be able to provide some beneficial information regarding their quality control and guide the manufacturers for improving the standardization of their products so that most suitable type of material may be available to the profession.