上皮生长因子预防心脏术后心包粘连的实验及临床研究

目的探讨上皮生长因子(EGF)对心脏术后心包粘连的预防作用.方法术中对犬心包内喷洒上皮生长因子3个月后,观察心包粘连情况;选先天性心脏病、房缺及室缺病人40例,术中心包内喷洒上皮生长因子,术后6个月、12个月经CT检查,判定心包粘连、增厚结果.结果在动物实验和临床研究中,实验组粘连程度显著低于对照组(P<0.01).结论 EGF心包内应用有明显预防心脏术后心包粘连的作用.     

地下室混凝土墙板裂缝的产生与防治

文章阐述了地下室工程裂缝的产生原因及特征，从设计、施工等方面提出了预防及其控制措施，并通过工程实例予以说明．     

米索前列醇预防产后出血临床观察

目的探讨产妇舌下含服米索前列醇预防产后出血的效果.方法实验组100例产妇于胎头着冠时舌下含服米索前列醇600μg,对照组90例产妇于胎肩娩出后立即静脉注射缩宫素20IU.用容积法和称重法测量两组产妇的产后出血量.结果实验组产妇产后失血量平均为(116.43±94.32)ml,对照组产妇产后失血量平均为(296.52±79.41)ml,两组产妇产后失血量差异显著(P《0.01).结论舌下含服米索前列醇可有效减少产妇的产后失血量.     

矿区开采沉陷地质灾害防治研究

煤炭开采所引发的地质灾害中,以开采沉陷对人类环境的影响最为严重。文章就矿区开采沉陷所引发的地质灾害与防治对策进行了研究,并开发了相应的建筑群保护煤柱设计软件。     

老屋基矿防治煤与瓦斯突出问题的分析和探讨

介绍了老屋基矿采、掘工作面防突措施情况，总结了老屋基矿防治煤与瓦斯突出措施取得的效果。     

微量元素硒在肿瘤防治中的作用及应用前景

硒作为人类必需的必需元素，人们对其重要性的认识日益提高，已经将将缺硒与增加癌症风险联系在一起。本文就硒在肿瘤防治中的可能作用及其应用进展，从流行病学调查、实验室和人群试验三个方面作一综述。尽管对其作用仍然存在不同观点的争论，但多数报道提示硒在抗癌领域有良好的应用前景。     

水泥混泥土路面裂缝分析及预防

本文简述了水泥砼路面的优缺点，详述了路面裂缝产生的原因，及其对路面使用功能产生的影响，并提出预防裂缝产生的办法     

学生田径训练中膝关节损伤的原因及预防

本文通过对参加田径专业训练的中学生的调查访问,探讨在中学生田径专业运动训练中膝关节损失的主要原因及其预防。     

Effects of Lower-limb Muscle Fatigue,Cardiopulmonary Fatigue,and Brain FatigueTasks on One-legged Landing Motion

Objective: Anterior cruciate ligament (ACL) injury is one of the most frequent sportsinjuries, and previous studies have shown that fatigue is a risk factor for sports injuries.This study aimed to inform prevention of ACL injury by investigating how exercise and desk tasks affect trunk and lower limb alignment and ground reaction force (GRF) during one-legged landing movements. Methods: The study subjects were 12 men who performed a one-legged landing movement from a 30-cm platform before and after fatigue tasks, including lower-limb muscle fatigue, cardiopulmonary fatigue, and brain fatigue tasks. For the measurement of joint angles and moments and GRF, a three-dimensional motion analysis device and a floor reaction-force meter were used. Statistics were performed using Wilcoxon''s signed rank sum test as a multiple comparison test with Bonferroni adjustment to compare the difference in effects. Results: The maximum trunk flexion angle during landing on one leg was significantly lower in the brain fatigue group than in the control group. The time to peak vertical GRF (pGRF) was significantly shorter in the leg-muscle fatigue group than in the control group. Conclusion: Brain fatigue may have altered the postural strategy before and after landing, resulting in a decrease in trunk flexion angle. Time to pVGRF was shortened in the leg muscle fatigue group, suggesting that there may be an increased risk of ACL injury. Time to pVGRF during lower extremity muscle fatigue and trunk flexion angle during brain fatigue may be more pronounced during actual sports activities.     

神经系统铅中毒

阐述了铅对人类尤其是胎儿、婴幼儿神经系统毒害的病因、发病机制、临床表现及治疗，并提出解决铅中毒的关键是易感人群的预防。