UPLC-MS/MS法检测血痕中常见烟草、毒品和药物成分

目的建立UPLC-MS/MS测定血痕中尼古丁、可替宁、甲基苯丙胺、氯胺酮、吗啡、O6-单乙酰吗啡、地西泮、三唑仑、艾司唑仑、佐匹克隆和利血平的方法。方法以甲醇为提取液,采用基质提取溶液配制标准溶液制作定量曲线。采用超高效液相色谱柱对待测样品进行分离;以电喷雾离子源正离子（ESI＋）模式和多反应监测（MRM）模式进行质谱分析。优化实验条件,并进行方法学评价。结果选择UPLC HSS T3色谱柱,乙腈-5mmol/L甲酸铵＋0.1%（v/v）甲酸作为流动相,甲醇作为提取溶剂。11种检测物检出限（S/N=3）和定量限（S/N=10）分别为0.04~2.82ng和0.13~7.64ng,1~500ng/mL范围内的线性关系良好。除利血平、吗啡外的检测物回收率为（53.8±5.3）%~（107.2±12.6）%。结论采用本文UPLC-MS/MS方法对血痕中11种常见烟草、毒品和药物成分进行检测,能够满足实际检案的要求,可在相关检验中选用。     

An Exploration of Sample Representativeness in Anthropometric Facial Comparison*

Abstract: Faces are assumed to be unique, but their use in court has remained problematic as no method of comparison with known error rates has been accepted by the scientific community. Rather than relying on the assumed uniqueness of facial features, previous research has been directed at estimations of face shape frequency. Here, the influence of age, sex, and ancestry on variation was investigated. Statistical shape analysis was used to examine the necessity for sub‐divisions in forensic comparisons, using a large sample of facial images on which 30 anthropometric landmark points had been placed in 3D. Results showed a clear pattern of separation of the sexes in all age groups, and in different age groups in men. It was concluded that sub‐division of databases by sex will be necessary in forensic comparisons. Sub‐division by age may be necessary in men (although not necessarily in women), and may be necessary by ancestry.     

The Automation of Regression Modeling in Osteometric Sorting: An Ordination Approach

This study compares the original osteometric sorting association method with an ordination approach across all combinations of the humerus, ulna, radius, femur, tibia, and fibula. This includes both the original prediction interval and t‐statistic approaches. Standard measurements are utilized in the models with full measurements combined and without length measurements. The sample is the osteometric sorting reference from the Defense POW/MIA Accounting Agency. A full set of performance statistics is provided. Results indicate the ordination approach outperforms the original in the majority of bone combinations. Models with length measurements have more exclusion power than those without. It is recommended for the ordination approach to supersede the original when applied to large commingled assemblages.     

Development of a GC-MS method for the simultaneous analysis of latent fingerprint components

Latent fingerprint residue is a complex mixture of organic and inorganic compounds. A full understanding of the composition of this mixture and how it changes after deposition is lacking. Three solvent systems were compared for the simultaneous extraction and derivatization with ethyl chloroformate of selected amino and fatty acids from a nonporous substrate (Mylar for subsequent analysis by gas chromatography-mass spectrometry. A solvent system comprised of sodium hydroxide, ethanol, and pyridine was found to be the most effective. This method was applied to the analysis of latent fingerprint residue deposited on Mylar and preliminary data are presented. Twelve amino acids (e.g., serine, glycine, and aspartic acid) and 10 fatty acids (e.g., tetradecanoic, hexadecanoic, and octadecanoic acids) were identified. The potential application of this method to further the understanding of latent fingerprint chemistry has been demonstrated.     

科学发展观:廉政文化建设的核心部件与重要推手

科学发展观,作为党的十六大以来马克思主义中国化的最新理论成果,既是理论创新的产物,也是指导当前工作的重要方法,还是当代中国廉政文化的重要构成与核心部件。以科学发展观为指导,就是要"以人为本",科学剖析廉政文化建设的重点对象与特别群体的特征;统筹兼顾,协调发展廉政文化建设的各个方面;牢记宗旨,在廉政文化建设中树立正确的政绩观;精心谋划,科学设计好廉政建设的各项制度。     

试论权利的逻辑构成的合理性

在我国法学界,关于权利的逻辑构成的研究是随着权利研究和权利实践的发展而发生和发展的.首先,概括了自己关于权利的逻辑构成的观点,即权利由主体、利益、行为和正当性四要件构成,继而指出这一观点合理性的基础并进行了论证.     

芍药属植物酚性化学成分研究进展

芍药属约有35个已知种。迄今为止，研究人员已从白芍、赤芍、牡丹、日本芍药、凤丹、紫斑牡丹、多花芍药、欧洲芍药、草芍药等种的花、种子、根皮中分离得到得到萜类、苯乙酮类、黄酮类及联苄类等多种类型化合物。本文对芍药属酚性化学成分进行综述，为该属植物的研究与开发提供依据。     

短暂的联合：越南民族主义力量联合战线研究

20世纪初，越南卷入了东南亚民族独立运动的浪潮。在各种政治势力中，平川派、高台教与和好教作为3股民族主义武装力量在反对法国殖民主义的斗争中扮演了重要角色。这3股势力产生于法国殖民统治时期，是民族矛盾日益尖锐的产物。历经反法斗争、武装割据的发展阶段，这3股势力走上了共同反对吴庭艳政权的道路，组建了民族主义力量联合战线。然而，这一战线仅仅存在了两个月就走向破裂和消亡，究其原因，是缘于3股势力在各自产生、发展过程中所形成的不同特点，也是法国与美国在越南实力消长的必然结果。     

Identification and Comparison of Electrical Tapes Using Instrumental and Statistical Techniques: II. Organic Composition of the Tape Backing and Adhesive*

Abstract: The microtexture and elemental composition of the backing of electrical tapes have been shown to be highly discriminating. In this study, the organic composition of electrical tape was evaluated as a complementary means of distinguishing tape brands. The backing and adhesive of 72 rolls of electrical tape were analyzed via Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR FTIR) and discriminant analysis was used to classify all samples by brand. Generally, the accuracy for FTIR data (88–99%) was higher than that for elemental data (86–94%). FTIR spectra from the adhesive layer were the most discriminating. In separate studies, two fragments of blast-damaged tape were correctly assigned to their brand of origin and discriminant analysis was used to quantitatively associate or exclude tape samples from two bombing cases.