Notes

Configurational Lability at Tetrahedral Phosphorus: syn/anti-Isomerization of an P-Stereogenic Phosphiranium Cation simply by Intramolecular Epimerization with Phosphorus.
The results of SEM and simple slope test analysis indicated that body satisfaction weakened the direct association of SCO with envy on SNS and further weakened the indirect associations of SCO with cyberbullying perpetration and victimization via envy on SNS. Specifically, individuals with high levels of SCO were more likely to feel envious on SNS, and further tended to bully others and be bullied online when they were dissatisfied with their bodies. In other words, positive body satisfaction protected individuals with high levels of SCO from cyberbullying perpetration and victimization by decreasing their feelings of envy on SNS.The aim of this study was to compare extra-articular radiographic parameters of distal radial fractures measured on plain radiographs and CT scans. Two researchers independently measured four extra-articular radiographic parameters (dorsal tilt, carpal alignment, radial inclination and ulnar variance) on both radiographs and CT scans in 85 patients. Inter-observer reliability for both techniques was assessed, along with the agreement between CT scans and radiographs using the intraclass correlation coefficient and Bland-Altman plots. The results showed that dorsal tilt, carpal alignment, radial inclination and ulnar variance can be measured reliably on both radiographs and CT scans. At a patient level, carpal alignment, radial inclination and ulnar variance CT scan measurements are an acceptable alternative to plain radiograph measurements in the vast majority of patients. In contrast, dorsal tilt CT scan measurements are not comparable with radiographs in 40% of the cases. Therefore, caution should be taken in measuring dorsal tilt on CT scans.Post-traumatic stress disorder (PTSD) is a condition characterised by recurrent intrusive distressing memories of a traumatic event(s) with recurrent dreams and flashbacks. Given the nature of standard forensic pathology practice which involves on-going assessments of violent crimes and their sequelae with autopsy dissections of victims and in detail study of injuries, it is surprising that more has not been written on this in the literature. Perhaps PTSD should be studied further in a forensic context with a recognition that years of intimate exposure to violence may lead to accumulated, ongoing and unresolved grief in practitioners.Young Black women consistently report the highest rates of teen dating violence (TDV) in the United States. They are also navigating a world in which they are facing historical marginalization and intersectional oppression. The Superwoman stereotypic role, in which Black women showcase strength and resist vulnerability, is often adapted in reaction to this normalized existence. Yet little research has examined how these constructs are related. In addition, research suggests that a positive racial identity may function as a psychological buffer against society's negative view of Black Americans and reduce involvement in violence. The current study examined the relationship between endorsement of a Superwoman role and TDV victimization among young Black women. A total of 481 Black women, aged 18-19, completed online survey measures assessing their racial identity beliefs, endorsement of racial stereotypes, and TDV experiences. The results of the path models showed that endorsement of a Superwoman role was associated with increased TDV victimization. Results also showed that racial centrality was inversely associated with TDV; the more the young women felt that being Black was a central part of their identity, the less they reported victimization. Findings suggest a need for attention to stereotype development and racial identity in the development of healthy romantic relationships for Black youth.
Ketamine is a phencyclidine derivative with dissociative anaesthetic properties. Increasing numbers of individuals in England take ketamine recreationally. Information on deaths arising from such use in England is presented.

Cases were extracted on 31 January 2020 from the National Programme on Substance Abuse Deaths database, based on text searches of the cause of death, coroner's verdict and positive toxicology results for the terms 'ketamine' or 'norketamine'.

During 1997-2005, there were <5 deaths p.a. in which ketamine was implicated. Numbers increased until 2009 (21), plateauing until 2016; thereafter, deaths have risen to about 30 p.a. Decedents' characteristics (
 = 283) male 84.1%, mean age 31.2 (SD 10.0) years, employed 56.5%, drug use history 79.6% and living with others 60.3%. Ketamine was detected with other substances in most cases. Main (74.6%) underlying cause of death was accidental poisoning. Ketamine may have impaired judgement in other cases.

Although controlled, recreational ketamine use and related fatalities continue to increase. Consumers need to be more aware of the potentially fatal risks they face.
Although controlled, recreational ketamine use and related fatalities continue to increase. Cytosporone B mouse Consumers need to be more aware of the potentially fatal risks they face.Pb(II) leakage from batteries, dyes, construction materials, and gasoline threaten human health and environmental safety, and suitable adsorption materials are vitally important for Pb(II) removal. Bone char is an outstanding adsorbent material for water treatment, and the effectiveness in Pb(II) removing need to be verified. In this paper, the transport characteristics of Pb(II) in columns filled with a sand and bone char mixture were studied at the laboratory scale, and the influences of the initial concentration, column height, inlet flow rate, and competing ion Cu(II) on Pb(II) adsorption and transport were analyzed. The Thomas and Dose-Response models were used to predict the test results, and the mechanisms of Pb(II) adsorption on bone char were investigated. The results showed that the adsorption capacity of the bone char increased with increasing column height and decreased with increasing initial Pb(II) concentration, flow rate, and Cu(II) concentration. The maximum adsorption capacity reached 38.466 mg/g and the saturation rate was 95.8% at an initial Pb(II) concentration of 200 mg/L, inlet flow rate of 4 mL/min, and column height of 30 cm. In the competitive binary system, the higher the Cu(II) concentration was, the greater the decreases in the breakthrough and termination times, and the faster the decrease in the Pb(II) adsorption capacity of the bone char. The predicted results of the Dose-Response model agreed well with the experimental results and were significantly better than those of the Thomas model. The main mechanisms of Pb(II) adsorption on bone char include a surface complexation reaction and the decomposition-replacement-precipitation of calcium hydroxyapatite (CaHA). Based on selectivity, sensitivity, and cost analyses, it can be concluded that bone char is a potential adsorbent for Pb(II)-containing wastewater treatment.
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