人体颅脑贯通枪创后心肌和肺的超微结构观察

本文报告6例人体颅脑贯通枪创后2小时所取心肌和肺的超微结构变化。6例心肌及肺的超微结构基本相似。心肌最明显的变化是:Z 带排列不规则,灶性肌原迁维溶解,线粒体肿胀、基质电子密度降低和嵴消失,间质水肿。肺组织的明显变化是肺泡隔和肺间质增宽伴电子密度降低,肺泡隔毛细血管内中性粒细胞聚集,肺间质或肺泡腔内中性粒细胞浸润。本文对主要病理变化的意义和发生原理进行了讨论,认为肺间质水肿与神经源性肺水肿有关,由于伤后经过时间长短不同或有无颅内高压形成,而出现间质性水肿或肺泡内水肿。心肌的变化与缺氧有关。     

Automobile theft: Estimating the size of the criminal population

Animal abundance estimation procedures including a new method of Zelterman are applied in the criminological context of auto theft in the Australian Capital Territory. Using goodness-of-fit statistics and comparing the estimates with known clearance rates, it is estimated that during 1987 about 39% of offenders were charged with at least one count of auto theft. The results also indicate the extent of overrepresentation of juveniles in court statistics compared with their relative participation rate in auto theft.     

骨骼个体识别系统的研究

骨骼个体识别系统的研究花锋，田雪梅，孙建军，沈旭昆ＳｔｕｄｙｏｆｔｈｅＣｏｍｐｕｔｅｒＳｙｓｔｅｍＢａｓｅｄｏｆｔｈｅＩｎｄｉｖｉｄｕａｌＩｄｅｎｔｉｆｉｃａｔｉｏｎｏｆＳｋｅｌｅｔｏｎ￥Ｈｕａｆｅｎｇ；Ｔｉａｎｘｖｅｍｅｉ；Ｓｕｎｊｉａｎｊｕｎ；（...     

Cross-national comparison of homicide: Age/sex-adjusted rates using the 1980 U.S. homicide experience as a standard

Cross-sectional studies of crime have typically relied on crude crime rates when making comparisons between countries. Crude rates control for population size but implicitly assume that all members of the population are equally at risk. Empirical studies have shown that, cross-nationally, risk varies by age and sex. Standardization of crime rates removes the confounding effects of variable age and sex population distributions. Since age/sex-specific crime rates are generally unavailable for many countries, the method of indirect standardization is the most desirable technique. Age/sex-adjusted homicide rates for 76 countries are presented, and two comparative measures are suggested. It is shown that while the United States has a higher homicide rate than all but 15 countries; in most cases, the magnitude of the difference, not controlling for age/sex differences, is overestimated. Crude rates underestimate differences between the United States and countries with higher rates of homicide.     

信息化战争中我军舆论战战法的构建

信息化战争按时间可划分为扼制战争阶段、战前准备阶段、战争实施阶段、战争结束阶段。科学构建信息化战争中我军舆论战战法,需要将信息化战争各阶段舆论战的“重心”细化为各种具体任务,针对每个任务提出相关战法。     

捅创论(附尸检例报告)

无尖无刃的细长钝器,沿其长轴戳入人体形成的创伤应命名为捅创。国内外现有的法医学书籍很少甚至没有描述过此创,个别作者将其归入锐器刺创。本文作者通过案例研究发现:不仅该创的致伤物为无刃无尖的棍棒类钝器(如木棍、木桩、手杖、擀面棍、铁锹把、竹竿、筷子、钢筋)而且成伤机制、形态学变化也与锐器刺创不同,应属于钝器伤。     

两种骨龄标准推断女性14岁年龄的准确度

目的研究李果珍百分计数法和中国人手腕骨发育标准CHN法在推断女性14岁年龄时的准确度。方法在湖南娄底三所中学随机选择51名14岁女生,同一条件下拍摄左手腕X线片;按照上述两种方法由专业人员阅片;对比两种方法所得结果及其与真实年龄间的差异。结果计数法和CHN法测得的骨龄与研究对象的实际年龄间无显著性差异(P>0.05),两种方法比较也未见明显差异(P>0.05)。结论计数法和CNH法可用于湖南地区女性14岁年龄的推断。     

Histological age prediction from the femur in a contemporary Dutch sample. The decrease of nonremodeled bone in the anterior cortex

This paper presents an uncomplicated and minimally invasive method for age-at-death determination in a contemporary Dutch (West European) population, by modifying the approach of assessment based on the age-related remodeling of bone tissue. In contrast to the usual "osteon count," a "non-remodeled tissue count" is undertaken. To optimize the method, proper zeroing of the polarization filter set of the microscope is essential. Instructions for setting the filters are given. A sample of femoral shaft segments totaling 162 individuals with ages ranging from 15 to 96 years is analyzed. Subperiosteal quantitative assessments are recorded at the most anterior point of the femoral shaft and also at points 25 degrees to the left and to the right of that point. Interobserver agreement in the assessments shows an acceptable degree of correlation. Bone remodeling with age does not progress in a linear, but in a curvilinear manner. Dependence of predicted age on nonremodeled surface counts in the analyzed areas of the anterior cortex of the femur appears to be significant. A set of regression equations is given. Sex can be ignored in age prediction. The small but statistically significant dependence of predicted age on cadaver length corresponds with the present strong secular increase in stature in the Netherlands. A concise catalogue with micrograph examples for every 10-year period in life is available upon request.     

A quantitative method for estimation of volume changes in arachnoid foveae with age

Age-related changes of arachnoid foveae have been described, but objective, quantitative analyses are lacking. A new quantitative method is presented for estimation of change in total volume of arachnoid foveae with age. The pilot sample consisted of nine skulls from the Palmer Anatomy Laboratory. Arachnoid foveae were filled with sand, which was extracted using a vacuum pump. Mass was determined with an analytical balance and converted to volume. A reliability analysis was performed using intraclass correlation coefficients. The method was found to be highly reliable (intraobserver ICC = 0.9935, interobserver ICC = 0.9878). The relationship between total volume and age was then examined in a sample of 63 males of accurately known age from the Hamann-Todd collection. Linear regression analysis revealed no statistically significant relationship between total volume and age, or foveae frequency and age (alpha = 0.05). Development of arachnoid foveae may be influenced by health factors, which could limit its usefulness in aging.     

Dietary health does affect histological age assessment: an evaluation of the Stout and Paine (1992) age estimation equation using secondary osteons from the rib

An age at death estimation equation that uses rib histological variables presented by Stout and Paine was used to evaluate a skeletal population of individuals with a known age at death and cause of death from either malnutrition or the niacin deficiency disease pellagra. The sample was comprised of 26 autopsied black South Africans. Histological analysis of mounted thin sections involved the microscopic measurement of cortical area and a count of the number of intact and fragmentary secondary osteons for the entire cross-section of the rib. Rib osteon population density values were then calculated for each case. It was found that this equation under-aged individuals on average by 29.2 years. Overall, secondary osteon size and Haversian canals tended to be larger than expected, while cortical bone area was less when compared with a control population. The implications of these findings are critical given that many of the skeletal remains examined by forensic anthropologists come from marginalized backgrounds, including malnutrition. This research suggests that measurements based on healthy cases may not be useful in an analysis of individuals with poor diet and health. It is argued that new standards for histological age assessment methods need to be created that account for variation in the health status of individuals examined by forensic anthropologists.