民事执行中查封之效力

民事执行查封效力的发生包括发生的时间、发生的要件和发生的期限,查封效力所及的范围包括查封物之从物和查封物之孳息.查封效力的具体内容包括对债权人的效力、对被执行人的效力、对第三人的效力.     

关于改进血手印显现方法的研究

文章根据血液的组成和特点,利用蛋白染色的原理,系统研究了在多种非渗透性和部分渗透性客体上应用四氯四碘、氨基黑10B、分散大红几种显现液显现血手印技术的显现效果,综合比较了各种配方的优越性。实验表明,这三种方法操作简单方便、用时少,显现出的手印纹线清晰、流畅,效果稳定,弥补了传统显现方法的不足。     

书写衬势物不平笔迹特点的实验研究

介绍了通过实验研究得出的在书写衬垫物不平条件下笔迹的形成原因和笔迹特征.     

光照人工老化原子印油色痕的分析

通过高效液相色谱法对光照人工老化后的原子印章色痕中的主要组分——颜料与油脂进行分析。寻找研究这些组分随时间变化的规律。为原子印章色痕形成时间的深入研究提供条件。     

Comparison of natural and artificial aging of ballpoint inks

Abstract:  Solvent evaporation caused by aging from ballpoint inks was measured by gas chromatography/mass spectroscopy (GC/MS). The sample preparation was carried out with two different thermal desorption systems. The results are compared. Thirteen inks were classified with regard to their solvents, polymers, and additives. The variation of the aforementioned compounds caused by aging was monitored for naturally and artificially aged samples. In this paper, the results are compared and discussed with respect to forensic casework.     

Molecular study of time dependent changes in DNA stability in soil buried skeletal residues

Stamp marks are used as a unique identification for a range of items, but these can be erased for criminal activities. Erased marks can sometimes be recovered by etching or magnetic means. The present study looked at the application of Fry's reagent to recover erased marks from steel. The investigation also demonstrated that Fry's reagent can deteriorate on storing and will require a longer etching time. The effect of different applied forces of stamping was investigated, and the depth of the underlying deformation was determined by etching after varying degrees of metal removal. The amount of metal needing to be removed depends on the force applied to the die. Metal removal also affects the time needed for recovery. The underlying structural change remains as a hidden identification mark, and could potentially be used by manufacturers as an unseen identifier. A model for the underlying deformation is proposed.     

油墨捺印赤足迹的稳定性研究

目的探讨使用油墨法捺印赤足迹样本的稳定性;方法用图像处理方法得到油墨赤足印的轮廓,计算机软件测量特征尺寸,用统计学方法分析数据;结果特征尺寸偏差≤4mm;结论油墨捺印方法能够稳定、客观地反映足迹特征。     

双溶剂提取法判定印泥印文形成时间的初探

目的通过双溶剂提取法判定印泥印文的形成时间,为判定文件的真伪提供重要依据。方法选用6种不同品牌的印泥和4种纸张分别制作印泥印文的历时性样本,通过实验确定适用于双溶剂提取法判定印泥印文形成时间的弱提取剂和强提取剂;确定薄层扫描时狭缝的大小和扫描波长;绘制盖印时间与提取率的关系曲线。结果弱提取剂为50％的甲酸溶液,强提取剂为N,N-二甲基甲酰胺,狭缝大小为12．00mm×0．60mm,扫描波长为485nm,得到了盖印印文形成后半年内印泥提取率随印文形成时间变化的关系曲线。结论双溶剂提取法是判定印泥印文形成时间的一种有效方法。     

"两可行为"取其轻--本案应定伪造印章罪

刑法理论对正确处理刑事案件的重要性不证自明.刑法规范是具体的,刑事案件是复杂的,刑法理论是抽象的.本文运用刑法理论分析了一起刑事案件,认为被告人行为应当定伪造印章罪,而非伪造金融票证罪或者其他罪.     

对签字笔墨水的分析回顾及展望

文章叙述了目前国内外签字笔墨水的发展及主要成分,并介绍了分析签字笔墨水的方法。通过化学法和TLC法可以确定签字笔墨水是水性还是中性;利用GC／MS法可以确定签字笔墨水中溶荆成分及其变化;利用拉曼光谱法可以鉴别墨水中染料或颜料成分;利用红外反射法可将29种墨水分为三类;利用扫描电镜法可以通过颜料形态的差别鉴别颜料基墨水。