Position paper on fatal abusive head injuries in infants and young children

This article represents the work of the National Association of Medical Examiners Ad Hoc Committee on shaken baby syndrome. Abusive head injuries include injuries caused by shaking as well as impact to the head, either by directly striking the head or by causing the head to strike another object or surface. Because of anatomic and developmental differences in the brain and skull of the young child, the mechanisms and types of injuries that affect the head differ from those that affect the older child or adult. The mechanism of injury produced by inflicted head injuries in these children is most often rotational movement of the brain within the cranial cavity. Rotational movement of the brain damages the nervous system by creating shearing forces, which cause diffuse axonal injury with disruption of axons and tearing of bridging veins, which causes subdural and subarachnoid hemorrhages, and is very commonly associated with retinal schisis and hemorrhages. Recognition of this mechanism of injury may be helpful in severe acute rotational brain injuries because it facilitates understanding of such clinical features as the decrease in the level of consciousness and respiratory distress seen in these injured children. The pathologic findings of subdural hemorrhage, subarachnoid hemorrhage, and retinal hemorrhages are offered as "markers" to assist in the recognition of the presence of shearing brain injury in young children.     

云南佛教文化的多民族性

云南佛教文化具有多民族性的特点.佛教最初传入云南的地区多是少数民族聚居区,有很多少数民族都接受了佛教的影响,同时又在其中注入本民族的文化要素,使之呈现出多种文化交融的特点.云南佛教文化的多民族性特点不仅反映为文化的多样性,而且还表现为文化的一体性,这折射出云南民族文化的本质特征,也揭示出云南民族文化的发展趋势.     

论参政党的政党意识

参政党要按照江泽民同志提出的进一步坚持好、完善好、落实好中国共产党领导的多党合作和政治协商制度的任务及要求,增强政党意识,要讲政治,要增强体现本党派的"特色意识",增强监督意识,发挥党派组织整体的作用,要善于学习,勇于实践,不断加强制度建设.     

用Chelex100法及有机溶剂提取法联合提取DNA扩增STR基因座的比较研究

为了比较不同方法提取DNA扩增STR基因座的成功率 ,本文用Chelex10 0法及Chelex10 0法联合有机溶剂提取法分别提取性犯罪案件 6份血斑及 6份混合斑中精子DNA ,并用PE公司ProfilerPlus系统复合扩增 ,ABI 310型基因分型仪检测。结果表明 ,常规采用Chelex10 0法提取血斑及精斑等生物检材DNA作STR基因座检验失败或所检测的位点较少时 ,应对Chelex10 0法提取的DNA上清液再用有机溶剂提取法提取 ,可极大提高DNA检验成功率。采用本文建立的Chelex10 0法联合有机溶剂提取法 ,提高了PCR扩增阳性率 ,对实际检案很有帮助 ;在PCR扩增前应常规进行DNA定量检验 ,否则对于重要检材应进行梯度扩增。     

32例妊娠期死亡法医病理学研究

目的　探讨妊娠死亡的特点。　方法　对 1990～ 2 0 0 0年间华西医科大学法医学院所做 3 2例妊娠死亡尸检病例进行分析。　结果　妊娠产妇死亡年龄以 2 5～ 3 0岁为多见 ,职业以农民常见 ,且绝大多数无产前检查记录 ,死亡多发生于分娩过程中 ,区、乡一级卫生院多发。前四位的死因依次为 :胎盘残留、输卵管妊娠破裂、产后感染和子宫血管结扎出血 ,绝大多数妊娠产妇死亡前产下活婴。　结论　有必要加强基层与农村医疗保健工作和制订有关的预防措施 ,以降低妊娠产妇的死亡率。     

四种常见尸食性蝇类活动与产卵习性

目的　明确常见尸食性昆虫成虫的活动习性和产卵习性 ,为法医实践中死后间隔时间的判断提供借鉴 ;　方法　在自然温度、室内恒温及包括夜晚、雨天等 2 6种不同环境条件对丝光绿蝇、大头金蝇、巨尾阿利蝇、棕尾别麻蝇成虫活动与产卵 (产仔 )习性进行了观察 ;　结果　昆虫成虫的活动与产卵习性在不同环境条件下往往不同 ,不同种类之间也存在差异 ,在利用昆虫发生规律为法医实践提供死亡时间等信息时 ,应具体问题具体分析。     

国产圆珠笔油墨字迹书写时间的鉴别

对国产圆珠笔油墨字迹书写时间的鉴别进行了实验研究,达到了检测速度快,实用性强,费用低的效果.     

D17Z1探针点杂交DNA定量研究

本研究化学合成了高等灵长类特异性α卫星寡核苷酸片段(D17Z1),经辣根过氧化物酶标记、分子杂交、化学发光法检测,建立了高等灵长类特异性DNA精确定量的方法.制备了DNA浓度梯度标准对照.对人类DNA,猴、猪、牛、羊、鸡、兔、鱼、小鼠等常见动物DNA及JMl09大肠杆菌、入DNA、φ174DNA等微生物DNA进行了定量分析.结果表明,应用该方法对人类DNA定量不受非高等灵长类动物DNA与微生物DNA的影响,可实现组分定量;灵敏度测试,可对0.12ng的人类DNA进行定量,适用于法医DNA检验定量分析.     

第八届全国经济法理论研讨会综述

2 0 0 0年 11月 14- 17日 ,第八届全国经济法理论研讨会在重庆隆重召开。在本次会议中 ,代表们就经济法不同领域中的问题提出了许多很有见地的新观点 ,展示了经济法研究领域的繁荣局面 ;同时对经济法基本理论中涉及的诸多基本问题达成了相当普遍的共识 ,表明我国法学界对经济法的研究正逐渐走向成熟。     

Current status of accreditation for drug testing in hair

At the annual meeting of the Society of Hair Testing in Vadstena, Sweden in 2006, a committee was appointed to address the issue of guidelines for hair testing and to assess the current status of accreditation amongst laboratories offering drug testing in hair. A short questionnaire was circulated amongst the membership and interested parties. Fifty-two responses were received from hair testing laboratories providing details on the amount and type of hair tests they offered and the status of accreditation within their facilities. Although the vast majority of laboratories follow current guidelines (83%), only nine laboratories were accredited to ISO/IEC 17025 for hair testing. A significant number of laboratories reporting that they were in the process of developing quality systems with a view to accrediting their methods within 2-3 years. This study provides an insight into the status of accreditation in hair testing laboratories and supports the need for guidelines to encourage best practice.