Establishing of chemical composition of printing ink

The subject of the examinations was primarily court tax marks of 50 and 200 PLN, which were suspected not to be genuine. Both inks on the questioned marks as well as comparative genuine marks and inks sent by the manufacturer were analyzed. No information about their chemical composition was available from manufacturer. In the examinations, infrared (IR), visible, X-ray fluorescence, and Raman spectrometry were used. The examinations showed that inks and glue on the marks of both values were the same as samples of those sent by the manufacturer. Discrepancies in some results were observed probably due to contamination, that is, an accidental presence of the foreign substance on the surface (e.g., sweat, saliva while sticking the marks to the surface or physical handling of the documents). It was concluded that there are original (genuine) court tax marks.     

Viability of Human Articular Chondrocytes Harvested Postmortem: Changes with Time and Temperature of In Vitro Culture Conditions

Different studies of long‐term chondrocytes viability have shown a gradual reduction as a function of time and ambient temperature. The aim of our in vitro study was to establish chondrocyte postmortem viability curves for 4°C, 11°C, 23°C, 35°C during 63 days after the donors' death. Osteochondral cylinders were procured from the knees of 16 male donors (20–47 years), stored in preservation media that was not changed, and analyzed in 3‐day intervals using a confocal laser scanning microscope. A significant influence of time on viability was found from Day 9 (p = 0.0029) and onwards (p < 0.0001). The lowest overall chondrocyte viability was at 35°C, followed by 4°C (p < 0.0001). The conditions used in this in vitro analysis suggest that similar viabilities may occur while in situ in the decedent. Further studies of chondrocyte viability from individuals with known postmortem intervals may show premise to help evaluate time since death in the late postmortem interval.     

毛泽东对党的群众路线理论的开创性贡献

群众路线,是毛泽东思想的灵魂之一。毛泽东投身革命之后,逐步认识到人民群众是历史的创造者,并把这一马克思列宁主义基本原理自觉地运用到党的全部活动之中,完整、系统地提出了党在一切工作中的群众路线理论,这是我们党长时期处于敌大我小、敌强我弱的艰苦环境下进行革命活动的无比宝贵的历史经验总结,必须继续继承和发展。     

执政党的作风建设永远在路上——学习习近平总书记重要论述的一点体会

群众路线教育要有针对性地解决党员干部存在的突出问题,要为长远加强党的作风建设打下良好基础。制度建设是对"四风"问题"治本"的可靠保障,将作风建设引向深入的目的是教育党员干部发扬艰苦奋斗精神,固化"为官不易"成果是不断地将作风建设引向深入的一种境界。要在世界观改造、抓教育抓实践、扎紧关住权力的制度笼子、不断地将作风建设引向深入这四个环节上狠下功夫。要通过理论建设、实践活动和制度约束三种重要方式,把每一个环节的工作都做好做到位。     

胶印同版印刷品的检验与鉴别

印刷品同版鉴别作为印刷文件检验的技术手段,一直是文件检验鉴定领域的研究热点之一。由于胶印印刷方法的广泛应用,在各类案件中经常使用胶版印刷品的同版检验技术,本文首先介绍了平版胶印的基本原理,阐述了平版胶印文件的特征,从总观特征和细节特征两个方面论证了胶印同版检验鉴定问题,并结合案例重点讨论了同版印刷品的鉴别问题,最后说明了在进行胶印同版检验鉴定中,检验鉴定人员要有严谨细致的工作作风,只有充分发掘检材和样本上的细节特征后才可以科学、准确的给出鉴定结论。     

新形势下加强和改进群众工作探讨

坚持群众路线,做好群众工作,为实现绝大多数人的利益而奋斗,是中国共产党执政思想的重要纲目和安身立命之本,也是胜利油田各级党委坚持推进"百年创新、百年胜利"愿景目标的宗旨和核心。事实证明,只有始终保持在群众工作上的政治清醒,坚持一切为了群众,一切依靠群众,脚踏实地接地气,返璞归真抓根本,才能不断取得群众工作的新胜利。     

坚持群众路线，创新社会治理——以“善治”理论为视角

群众路线作为党的根本路线贯穿于整个社会治理的始终。本文从“善治”理论的视角分析了“善治”、群众路线以及创新社会治理体制的内在联系。提出应在“善治”理念下践行党的群众路线。从社会治理的前提、基础、关犍、本质、重点、棱心六个方面重构社会治理的对策。     

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.     

Personal identification by the comparison of facial profiles: testing the reliability of a high-resolution 3D-2D comparison model

Identification from video surveillance systems is frequently requested in forensic practice. The "3D-2D" comparison has proven to be reliable in assessing identification but still requires standardization; this study concerns the validation of the 3D-2D profile comparison. The 3D models of the faces of five individuals were compared with photographs from the same subjects as well as from another 45 individuals. The difference in area and distance between maxima (glabella, tip of nose, fore point of upper and lower lips, pogonion) and minima points (selion, subnasale, stomion, suprapogonion) were measured. The highest difference in area between the 3D model and the 2D image was between 43 and 133 mm(2) in the five matches, always greater than 157 mm(2) in mismatches; the mean distance between the points was greater than 1.96 mm in mismatches, <1.9 mm in five matches (p < 0.05). These results indicate that this difference in areas may point toward a manner of distinguishing "correct" from "incorrect" matches.     

Examination of heterogeneous crossing sequences between toner and rollerball pen strokes by digital microscopy and 3-D laser profilometry

The determination of line crossing sequences between rollerball pens and laser printers presents difficulties that may not be overcome using traditional techniques. This research aimed to study the potential of digital microscopy and 3-D laser profilometry to determine line crossing sequences between a toner and an aqueous ink line. Different paper types, rollerball pens, and writing pressure were tested. Correct opinions of the sequence were given for all case scenarios, using both techniques. When the toner was printed before the ink, a light reflection was observed in all crossing specimens, while this was never observed in the other sequence types. The 3-D laser profilometry, more time-consuming, presented the main advantage of providing quantitative results. The findings confirm the potential of the 3-D laser profilometry and demonstrate the efficiency of digital microscopy as a new technique for determining the sequence of line crossings involving rollerball pen ink and toner.