The Optimal Combination of Cartilage Source and Apparatus for Long‐Term In Vitro Chondrocyte Viability Analysis

Abstract: Most studies of long‐term chondrocytes survival were for tissue banks. They showed a gradual reduction in the viable chondrocytes percentage as a function of time and ambient temperature, but the samples were harvested under optimal conditions. The aim of our study was to determine the most reliable combination of cartilage source and assay for the in vitro postmortem chondrocyte viability analysis in the conditions that imitate a dead body. Osteochondral cylinders were procured from femoral condyles and talar trochleas of three male donors and stored in the cell culture media at 4 ± 2°C and 23 ± 2°C. The samples were analyzed by a cell viability analyzer and a confocal laser scanning microscope (CLSM) initially 24–36 h after death and then in 4‐week intervals. The results reconfirmed the significant influence of time (p = 0.0002), but not of the temperature (p = 0.237). The largest reproducibility was presented for the knee joint and the CLSM.     

侦查终结的几个问题探讨

完善侦查终结的立法措施有:规定侦查阶段疑案从无制度;完善侦查总体期限规 定;规定侦查中止。     

尸体胸骨骨髓细胞核DNA含量变化及其与死后经过时间的关系

目的探讨推断腐败尸体死亡时间的新方法。方法应用计算机图像分析技术,对以改良的Feu lgen法染色,死后经过不同时间(<1~14d)的胸骨骨髓细胞核DNA含量进行观测,并对所得数据进行相关分析。结果胸骨骨髓细胞核DNA含量随死亡时间延长逐渐下降,死后2周DNA量达最低值;死后DNA降解速率与死亡时间呈直线相关。结论测定胸骨骨髓细胞核DNA含量有助于腐败尸体的死亡时间推断。     

睡眠呼吸暂停综合征患者血压结构、夜间睡眠结构的相关性

目的 运用基于时辰的心肺耦合（cardiopulmonary coupling,CPC）睡眠监测技术探讨睡眠呼吸暂停综合征（sleep apnea syndrome,SAS）患者血压结构及夜间睡眠结构的相关性。方法 纳入因睡眠问题就诊的92例患者,采用基于时辰的CPC监测仪和24 h动态血压（ambulatory blood pressure monitoring,ABPM）监测仪,进行同步监测,采集相关数据。根据CPC计算的呼吸紊乱指数（respiratory disturbance index,RDI）,将患者分为非SAS组23例,SAS组69例,分析两组间血压、夜间睡眠结构的差异;并比较不同程度SAS患者血压、夜间睡眠结构的差异;以及SAS患者RDI与夜间子、丑、寅时睡眠结构的相关性。结果 ①SAS组高血压患病率、异常血压节律发生率明显增高;且初入熟睡时间较长,熟睡时间减少,浅睡时间增多。②轻、中、重度SAS患者夜间睡眠结构差异有统计学意义（P<0.05）。③不同程度SAS患者与夜间子、丑、寅时睡眠结构存在部分差异,进一步线性回归分析发现,SAS患者RDI与子时、寅时浅睡眠时间呈正相关。结论 SAS患者高血压患病率、异常血压节律发生率高,存在夜间睡眠结构紊乱;不同程度SAS患者间血压结构差异不明显,睡眠结构的主要差异在于不稳定睡眠增多,而稳定睡眠减少,且SAS严重程度与子、寅时浅睡时间呈正相关。     

哲学的“未来”观念（下）

西方将哲学称作“形而上学(metaphysics)”,“meta”和“physics”缺一不可。“形而上学”不能“形式化”,“时间”与“自由”进入“形而上学”,也不能“形式化”。“时间”不可分割,但“时间”与“自由”皆有“度”。“自由”有“你我他”,“时间”有“过去现在未来”。同时这也是“存在”的状态———“人自由者”的一种特殊“存在状态(Dasein)”。“人”作为“Da sein”是“有死者会死者”,以“死”来划分“时间”的“维度”。“生死”这一过程,就是“自我”的“现时在世”。然而,“死”仍提示着“他者”。在“Dasein”的“过去现在未来”的“度”中,“未来”居于核心的地位。“人”作为“自由者”,是“创造者”。“自由”的“创造”,使“非存在”成为“存在”。“自由”之“创造”,使“未来”成为“希望”。“希望”又使传统哲学范畴的地位发生变化,“可能性现实性”如同“自由必然”一样在理解上有所推进。     

The biochemistry of vitreous humour. A comparative study of the potassium, sodium and urate concentrations in the eyes at identical time intervals after death

Analysis of the vitreous humour from an individual's eyes collected at the same time since death showed variation between the eyes in the concentration of potassium, sodium and/or urate. This previously unreported finding would limit the use of measuring these electrolytes in determining the time of death.     

白三烯含量的测定推断损伤时间实际应用的探讨

本文利用高压液相色谱法，检测大鼠切创创缘10％福尔马林固定皮肤检材的白三烯B4（LTB4）含量，结果发现：大鼠生前切创检材中LTB4含量增加，在1小时内其含量与损伤时间呈线性关系；死后伤未检见LTB4。随着福尔马林固定时间的延长，含量明显下降，但1周内仍可测出。     

高职院校兼职专业教师队伍建设的实践思考

目前,高职院校兼职教师队伍建设并不理想。造成这一问题的原因,主观因素是对兼职专业教师队伍认识不到位,客观因素是在具体建设过程中遇到现实困难。加强兼职教师队伍建设,应从深化对兼职专业教师的认识入手,正视实践中的困难,积极探讨解决问题的办法。     

试论新时期人民警察精神

在深入贯彻落实科学发展观,构建社会主义和谐社会,全面建设小康社会中,人民警察如何担负起维护社会主义、巩固共产党的执政地位、维护国家长治久安、保障人民安居乐业的重大责任,要求人民警察必须要有一种警察精神。什么是警察精神,本文提出了精神的内涵、警察精神的作用,培育警察精神的重要性和基本思路,警察如何弘扬和传承民族精神,引导警察对公安机关进一步产生认同感、归属感和自豪感,使整个队伍形成强大的凝聚力和向心力,使警察具有昂扬向上的精神状态投入到各项公安保卫工作中去。     

Taphonomic Effects of Vulture Scavenging*

Abstract: From July through September 2007, three pig carcasses (Sus scrofa), weighing between 27 and 63 kg were placed outside in a grassy area in central Texas. A surrounding fence prevented entrance by terrestrial scavengers, while allowing avian scavengers unrestricted access. A fourth pig carcass served as a control for the rate of decomposition and was placed in a cage that prevented terrestrial and avian animal access. Modification of the carcasses was recorded through the use of two motion‐sensing digital cameras and daily on‐site observations. American black vultures (Coragyps atratus) and turkey vultures (Cathartes aura) waited c. 24 h before beginning to scavenge and completely skeletonized the carcasses in 3 to 27 h of feeding, leaving scratches on the bones. The accelerated rate of decomposition and the signature markings on the bones should be considered when interpreting taphonomic events and determining an accurate postmortem interval at vulture‐modified scenes.