5-(4-Nitrophenyl)-2,4-pentadien-1-al (NPPD) used as a tracer by nonscientists at a simulated crime scene

5-(4-Nitrophenyl)-2,4-pentadien-1-al (NPPD) was used as a tracer by nonscientists at a simulated crime scene. A card with both a plastic-coated smooth surface and a porous cellulose matrix paper surface was coated with a methanol solution containing 0.5mg/mL of NPPD. The card was touched with bare fingers and fingers covered by a cotton glove. A color-change protocol was then used to detect the presence of NPPD. The bare fingers or the fingers of gloves were swabbed with a cotton swab, or the parts of the glove that had touched the card were cut out. The swabs or the cloth pieces were dipped in methanol, a 0.1% methanol solution of naphthoresorcinol was added, and then concentrated hydrochloric acid was added. The observation of a red color at this point indicated a positive test. NPPD was easily observed in the experiments involving bare fingers, but no color change was observed from the swabbing of the cotton glove. However, when the cloth pieces cut from the fingers of the glove were subjected to the test, the red color was observed. In an attempt to enhance the sensitivity of the test, the volumes of the reagent solutions were reduced, but no improvement in sensitivity was obtained.     

An Autopsy Case in Which Self‐Bloodletting Via a Cervical Blood Access Led to a Fatal Outcome*

Abstract: A 48‐year‐old woman was found dead on a chair in her living room. She had received dialysis every day because of chronic renal failure for the past 15 years. On a table beside her, there was a mirror and 10‐mL syringe on a napkin. A stopper was out of place in a portion of a three‐way blood access tube established in the right cervical region, and blood coagulation was noted in the lumen. There was a bloodstained measuring cup on the floor. Autopsy findings included a large number of shunt traces in the bilateral infraclavicular fossae and upper limbs, as well as the cervical blood access terminal reaching the right atrium via the internal jugular vein to superior vena cava. Various organs showed anemia. Neither a fatal lesion nor injury was noted in the main organs. Therefore, this patient may have committed suicide by self‐bloodletting via a cervical blood access.     

Complement component C3a or C3a desArg as a new marker for estimation of local vital reactions in incised skin wounds.

The anaphylatoxin C3a or its desArg form (C3a/desArg) generated during complement activation could be detected in the vicinity of incised skin wounds of guinea pigs using immunoblotting methods. The C3a/desArg peptides were detectable immediately after injury in local sites up to 3 mm from the wound edge. In subsequent determinations of up to at least 3-day-old antemortem wounds, the maximum concentration of these peptides was largely localized up to 6 mm from the wound edge at 2 h after injury. In postmortem wounds, however, these peptides were undetectable. When they were released in antemortem wounded tissues they could be detected up to 1 day at 22 degrees C after death. These results suggest that the detection of C3a/desArg in wounds using immunoblotting methods can be useful for distinguishing ante- from postmortem wounds.     

日本当代中国学研究的新范式

以二战为分水岭,日本战前的中国学研究在战后被日本学界视为战争的幕后推手而彻底抛弃,战后的研究是在批判东洋史研究的基础上重新开始的一门新学问。从源流来看,日本的当代中国学研究有东洋史和区域研究两个系列四个学派;从思考框架来看,存在回归传统、"中国就是中国"、普通的近代化、东亚型四种模式。与欧美国家相比,日本的中国学研究在中国的近现代历史和经济研究领域最为活跃,引领世界前沿。面对当前日本中国学研究停滞不前的状况,鉴于中国发展的实际,三元结构论、制度化、相对化可作为推进研究的新范式。     

Immigrant Students’ Emotional and Cognitive Engagement at School: A Multilevel Analysis of Students in 41 countries

Central to student learning and academic success, the school engagement of immigrant children also reflects their adaptation to a primary institution in their new country. Analysis of questionnaire responses of 276,165 fifteen-year-olds (50?% female) and their 10,789 school principals in 41 countries showed that school engagement has distinct, weakly-linked cognitive and emotional components. Native students had weaker attitudes toward school (cognitive engagement) but greater sense of belonging at school (emotional engagement) than immigrant students or students who spoke a foreign language at home. Students with better teacher–student relationships, teacher support or a classroom disciplinary climate often had a greater sense of belonging at school and had better attitudes toward school than other students. While immigrant students often have solid attitudes toward school, teachers can help them feel a greater sense of belonging at school.     

Manipulating Electoral Rules to Manufacture Single-Party Dominance

This article argues that the LDP manufactured its parliamentary dominance in postwar Japan by strategically altering specific facets of the electoral system. More generally, I demonstrate that intraparty politics play a crucial role in determining when and how electoral rules are changed. Despite widespread evidence that the LDP would win more seats under an SMP electoral formula, party leaders were repeatedly blocked from replacing the postwar MMD-SNTV system by intraparty incumbents, who feared that such a change would harm their individual reelection prospects. However, party leaders had greater leeway in altering rules that generated fewer intraparty conflicts. Between 1960 and 1990, the LDP implemented approximately fifty changes to campaign regulations, most of which were aimed at enhancing the incumbency advantage of all rank-and-file MPs. Statistical tests confirm that absent pro-incumbent revisions to the electoral code, the LDP would have succumbed to declining public popularity and lost its majority at least a decade earlier.     

Ruptured Syphilitic Aneurysm: A Cause of Sudden Death in a Man with Human Immunodeficiency Coinfection

Syphilis, a sexually transmitted infection caused by the bacterium Treponema palladium, is experiencing a worldwide resurgence. The risk of syphilis infection is particularly high in men who have sex with men (MSM), especially those who are human immunodeficiency virus (HIV)‐positive. Untreated syphilis can lead to rare but severe late‐stage complications, including syphilitic aortitis. Herein, we present an autopsy case of a ruptured thoracic aneurysm that resulted from an undetected case of syphilitic aortitis in an HIV‐positive Japanese MSM with undiagnosed syphilis. Although no syphilitic skin lesions were observed on the body, anatomical changes consistent with a syphilitic etiology were present at the site of the rupture, including medial aortic scarring with “tree‐bark”‐like atherosclerotic plaque. In addition, heart blood was positive for T. palladium in a latex agglutination test. This case highlights for forensic pathologists the importance of recognizing syphilis as a possible underlying cause of sudden death among HIV‐positive MSM.