体育运动中常见运动损伤的成因及处理

就体育运动过程中常见的运动性损伤形成的原因,以及运动损伤后的病理变化和适当的处理方法作一综述,以期避免运动损伤的发生对于学生和教师正常教学和训练造成不良影响。     

Effects of temperature on Agrocybe chaxingu quality stored in modified atmosphere packages with silicon gum film windows

The effects of three storage temperatures (1, 3, and 5 °C) were determined on the quality of the edible mushroom Agrocybe chaxingu stored in modified atmosphere packages (MAP) with and without (control) silicon gum film windows. Results showed that the storage temperature had clear effects on headspace gas concentrations of O₂, CO₂ and ethylene, sensory characteristics, respiration rate, ascorbic acid content, soluble solid content and electrolyte leakage. The higher storage temperature (5 °C) resulted in more rapid changes in the different quality parameters for the stored mushroom except in the case of storage at 1 °C where chilling injury occurred. The MAP with silicon gum film windows at 3 °C provided the best atmosphere for mushroom A. chaxingu as shown by a fact that the MAP packs with windows at 3 °C had better quality than the control.     

钻井过程中的油气层保护技术探讨——以临盘油田X502断块油气层保护为例

该文概要介绍储集层伤害机理，分析了钻井过程中钻井液对储集层的伤害。以X502断块为例，系统地分析了储集层特征、敏感性伤害原理，重点阐述了在钻井过程中的油层损害现状及原因。通过对储集层的孔隙特征综合分析寻找出了该区储集层的主要伤害因素为“储集层粘土膨胀导致储集层孔喉堵塞”，并以此为依据对钻井过程中实施油气层保护提出了一些建议。     

Evaluation of electronic stability control effectiveness in Australasia

Electronic stability control (ESC) is an in-vehicle technology aimed at improving primary safety by assisting the driver in avoiding loss of control of the vehicle. The aim of this study was to use available crash data from Australia and New Zealand to evaluate the effectiveness of ESC in reducing crash risk and to establish whether benefits estimated from overseas studies have translated to the Australian and New Zealand environments. The sample analysed included 7699 crashed vehicles fitted with ESC which comprised of 90 different models. Poisson regression was used to test whether the differences in the observed and expected crash counts for ESC fitted vehicles were significant, with exposure being induced from counts of rear end impacts. It was found that ESC reduced the risk of single vehicle crashes in which the driver was injured by 68% for 4WDs compared with 27% for passenger cars. The effect of ESC on multiple vehicle crashes in Australia and New Zealand was not clear. The long-term benefits of fitting ESC to all vehicles in Australia were also investigated based on the estimated single vehicle crash reductions.     

高速冷连轧时工艺润滑的优化技术

引入了打滑与热滑伤综合判断指标，并将乳化液的润滑性能与冷却性能有机地结合，把乳化液的流量、浓度、温度等参数作为一个整体，建立了以综合防治打滑与热滑伤为目标的工艺润滑制度优化模型。实践表明，应用此模型可使高速冷连轧时既不发生打滑又不发生热滑伤现象，经济效益明显。     

脊柱手术并发脊髓不完全损伤10例临床分析

目的:对脊柱手术并发脊髓不完全损伤患者资料进行回顾,分析其临床治疗和预后。方法:以本院脊柱手术后并发不完全损伤10例患者为研究对象,患者手术后均有脊髓不完全损伤的临床表现,给予甲基强的松龙冲击治疗,并加以肢体功能锻炼,术前和术后3个月进行JOA评分和ASIA等级比较。结果:10例患者术前与术后3个月的JOA评分无统计学差异(P>0.05),术后患者ASIA评分低于术前,治疗恢复3个月后脊髓功能的ASIA分级有所改善,恢复至术前或接近术前。结论:脊柱手术并发脊髓不完全损伤程度较轻,经及时的术后治疗和功能锻炼脊髓功能可得到较好恢复。     

Concentration of squalene from shark liver oil by short‐path distillation

Investigations on the concentration of squalene from shark liver oil using short‐path distillation are presented and compared to alternative techniques. Aspects of chemical composition analysis are discussed as well as physical and sensory properties. A product is obtained with squalene purities above 97% at feed flows of up to 7 kg/h and temperatures between 185 and 230 °C. In order to assure product quality, a simple refractive method is applied. Based on the presented study, scale‐up to industrial production is performed taking into account the complete process for obtaining an acceptable product with a neutral odor.