逆行交锁髓内钉治疗股骨髁上骨折

目的:探讨逆行交锁髓内钉在治疗股骨髁上骨折中的应用.方法:从2003.1～2003.5月,应用逆行交锁髓内钉治疗23例股骨髁上骨折.结果:随访5～18个月,骨折均愈合.结论:逆行交锁髓内钉是治疗股骨髁上骨折的良好方法之一,其提供的力学固定有利于骨折愈合和膝关节功能的康复.     

Numerical Simulation of the Flat Ribbon Wound Explosion Containment Vessels Subjected to Internal Blast Loading

In order to constitute engineering design methods of the flat ribbon wound explosion containment vessels, the dynamic response of such vessels subjected to internal explosion loading is simulated using LS-DYNA3D. Three winding angles, 10°, 15°and 20°, are considered. It is shown that among ribbon vessels investigated, the center displacement of outermost ribbons of the vessel with 10°winding angle is the smallest under the same blast loading. The response of vessels loaded in inner core is local. From the center of the cylindrical shell to the bottom cover, the maximum strain gradually decreases. The ribbons are subjected to tension in the length direction and compression in the width direction. Blasting shock energy concentrates on where is close to center section of blasting. For comparison, numerical simulation of a monobloc thick-walled explosion containment vessel is also investigated. It can be found that the biggest deformation of the flat ribbon wound explosion containment vessels is bigger than that of the monobloc thick-walled explosion containment vessel in the center section of blasting under the same TNT. Numerical results are approximately in agreement with experimental ones. It is proved that the ribbon vessels have the valuable properties of " leak before burst at worst" compared with the monobloc vessels through numerical simulation.     

A first order system model of fracture healing

A first order system model is proposed for simulating the influence of stress stimulation on fracture strength during fracture healing. To validate the model, the diaphyses of bilateral tibiae in 70 New Zealand rabbits were osteotomized and fixed with rigid plates and stress-relaxation plates, respectively. Stress shielding rate and ultimate bending strength of the healing bone were measured at 2 to 48 weeks postoperatively. Ratios of stress stimulation and fracture strength of the healing bone to those of intact bone were taken as the system input and output. The assumed first order system model can approximate the experimental data on fracture strength from the input of stress stimulation over time, both for the rigid plate group and the stress-relaxation plate group, with different system parameters of time constant and gain. The fitting curve indicates that the effect of mechanical stimulus occurs mainly in late stages of healing. First order system can model the stress adaptation process of fracture healing. This approach presents a simple bio-mathematical model of the relationship between stress stimulation and fracture strength, and has the potential to optimize planning of functional exercises and conduct parametric studies. Project (No. 39470698) supported by the National Natural Science Foundation of China     

Investigation on the temperature distribution and strength of flat steel ribbon wound cryogenic high-pressure vessel

INTRODUCTION Cryogenic high-pressure vessels are used to store liquid hydrogen and liquid oxygen, and are necessary equipments in the fields of chemical engineering, astronautic engineering and nuclear power plant, and so on. Safe operation of the vessel is always a concern of environmental protection. The inner pressure of the vessel can reach 40 MPa at temperature of 20 K; Therefore, the vessel requires high-performance wall material excellent in mechanical strength, plastic property,…     

Reflections on healing: framing strategies utilized by acquaintance rape survivors

This study examines the stories acquaintance rape victims tell through semi-structured interviews. Acquaintance rape, viewed here as a particularly paradoxical crime, creates a need for women to resolve the inconsistency of their experience. By conducting interviews with victims and analyzing their verbal communication, this project explores how victims frame their rape experience. Framing strategies used by victims of sexual harassment served as a guide for the initial identification of framing strategies for victims of acquaintance rape. Women in this study utilized strategies of paradox management to assess blame, define, and reframe their experiences. Recognition of these management strategies can assist social support networks and law enforcement professionals in identifying the communicative strategies of female victims of varying types of violence.     

试论出版界在“阅读疗法”理论研究与实践中的缺位——兼论我国“疗愈类”图书的出版现状

通过对“阅读疗法”研究现况、论文统计以及疗愈类图书的出版现状的分析,可以发现我国出版界在“阅读疗法”理论研究与实践中的缺位.希望能引发出版界对于“阅读疗法”的重视,化被动为主动,关注“阅读疗法”的理论与应用,加强从出版视角对阅读疗法的研究,积极投身疗愈类读物的出版实践.     

美国康复花园个案探究

康复花园是近年来国内外风景园林设计行业发展的新方向,主要关注病人、老年人、残障人员等弱势群体,为他们创造宜人的、有利于康复的园林环境。美国康复花园的理论研究及设计实践较为系统与成熟,在国际上已处于领先水平。结合坦恩.艾克景观设计工作室(Ten Eyck LandscapeArchitects)在美国亚利桑那州的两个康复花园设计实例,介绍美国风景园林行业在康复花园设计理论研究及实践领域的进展,以期为我国康复花园的设计和发展提供借鉴。     

中部1/3髌韧带切除后其修复过程中的钙化现象

在对实验性切除中部1/3髌韧带后,剩余部分髌韧带修复过程进行有关研究时,发现在术后的3至9个月,已修复的伤口区中央出现一些类似骨样的细胞和结构。通过进行茜素红染色和对骨形成蛋白-4(BMP-4)基因表达进行原位杂交研究。我们认为:这是一种钙化现象,属不良修复的可能性大,而非是自然修复的一个过程。钙化现象可能是导致韧带损伤修复后功能不能恢复正常的原因之一。同时我们还发现 BMP-4 基因在那些类似骨细胞样的过渡型的间充质细胞中存在着表达,提示:BMP-4 基因在髌韧带修复过程中会起着一定的作用,可能也在钙化现象的发生当中担当一定的角色。     

消肿膏外敷加针炙治疗软组织损伤疗效分析

根据损伤性质及部位随症加减配制消肿膏,再配合选穴针炙治疗一般笥及合并有肌腱、韧带损伤的难治性软组织损伤,结果证明消肿膏具有良好的活血祛瘀、消肿止育作用,与针炙并用可散瘀通经,调整小关节功能紊乱,收到标本兼治的效应。     

肱骨内上髁骨折的治疗

对５４ 例肱骨内上髁骨折患者经手法整复位。用超肘关节弹性小夹板及丁字托板固定稳妥,有利于早期进行功能锻炼,配合中药辨证施治,进行综合治疗,加速机体内成骨活动,有利于骨折愈合和促进功能恢复,防止并发症的发生。