Rapid death from thrombotic thrombocytopaenic purpura following caesarean section.

We report a case of rapid death from thrombotic thrombocytopaenic purpura (TTP) in a young pregnant lady who developed full blown symptoms soon after caesarean section. Extensive intramyocardial confluent haemorrhages and widespread microthrombi in heart, brain, adrenals and kidney were found at autopsy. Thrombotic thrombocytopaenic purpura is an uncommon condition, which carries a high fatality rate if untreated. Awareness of this syndrome together with its high risk of sudden death underlines the importance of rapid diagnosis and treatment.     

Bureaucrats–Enterprise Negotiation in China's Enterprise Reform at the Local Level: case studies in Guangzhou

This article explores the implementation of SOE reform in China at the local level, using case studies in Guangzhou as illustration. It is argued that local government spearheads a reform agenda that puts locally-defined state objectives first, not necessarily favouring enterprise restructuring. A full-fledged negotiation model does not exist in SOE reforms because all enterprises are controlled by the state and have to comply with top-down policies and orders. Government-enterprise relations and the degree of entrepreneurial power depend largely on the economic strength of the enterprise, with the boomers getting a good economic bargain while the laggards fail to gain sympathy from government. Enterprise workers are largely at the mercy of restructuring decisions that come from bargaining and at times collusion between managers and local bureaucrats.     

Price discrimination in a rent-seeking economy

This paper examines the incentive and the consequences of using discriminatory pricing by a monopolist in a rent-seeking economy. It is shown that, even if all consumer groups' demands have identical elasticities at any given price, the monopolist has an incentive to charge a lower price to high pressure consumer groups so as to alleviate their rent-seeking efforts in challenging its monopolistic power. Furthermore, it is shown that by allowing the firm to price discriminate total welfare may increase, even if all rent-seeking expenditures are completely wasteful.     

青年的政策觉识与支持老年父母的关系:一项香港与上海的比较研究

这项研究探讨香港与上海两地青年的公共政策或社会责任、子孙或家庭责任、个人责任的觉识对其照顾、接纳和承担照顾父母的意愿的效应.研究结果显示:(1)对政府或社会的养老政策责任的觉识愈高者则照顾父母的意愿明显地愈高;然而,对老年人的自立生活具愈高的觉识者,其照顾父母的意愿却愈低;(2)对倡导尊敬老年人的觉识愈高和对老年人的自立生活的觉识愈低者,其接纳照顾父母的意愿愈高;(3)对政府责任的觉识愈高者和对个人责任的觉识愈低者,其承担照顾父母的意愿愈高.文章同时就倡导两地照顾或供养父母的政策启示进行讨论.     

Identification of human semenogelin in membrane strip test as an alternative method for the detection of semen

Semenogelin (Sg), a protein originating in the seminal vesicles and a substrate for prostate specific antigen (PSA or p30), is a useful marker for the identification of semen. And detection of Sg has been available commercially in a membrane test recently. PSA is commonly used to detect semen in forensic significant samples taken from sexual assault cases. The strip PSA test has been available commercially from various manufacturers for many years. In this study, we evaluated two immunochromatographic membrane tests, one for Sg and the other for PSA by analyzing human semen, other human bodily fluids/materials including urine, blood, saliva, sweat, breast milk, vaginal secretion and fecal materials, semen from various animals and forensic casework samples. The data demonstrate that both Sg and PSA strip tests provide rapid and sensitive method for identification of seminal plasma. These results show that the immunochromatographic method for Sg detection is useful for the identification of seminal plasma in forensic samples, an alternative to the method for PSA detection.     

Roadside detection of impairment under the influence of ketamine--evaluation of ketamine impairment symptoms with reference to its concentration in oral fluid and urine

Although there are many roadside testing devices available for the screening of abused drugs, none of them can be used for the detection of ketamine, a popular abused drug in Hong Kong. In connection to local drug driving legislation, effective roadside detection of ketamine in suspected drug-impaired drivers has to be established. According to the drug evaluation and classification program (DEC), ketamine is classified in the phencyclidine (PCP) category. However, no study has been performed regarding the signs and symptoms exhibited by users under the influence of ketamine. In a study to develop a protocol for effective roadside detection of drug-impaired drivers, 62 volunteers exiting from discos were assessed using field impairment tests (FIT) that included measurements of three vital signs (i.e. body temperature, pulse rate and blood pressure), three eye examinations [pupil size, lack of convergence (LOC) and horizontal gaze nystagmus (HGN)] and four divided attention tests (Romberg, one-leg stand, finger-to-nose and walk-and-turn tests). Subsequent laboratory analysis of oral fluid and urine samples from the participants revealed the presence of common abused drugs in both the urine and oral fluid samples of 55 subjects. The remaining 7 subjects with no drug in their oral fluid samples were used as drug-free subjects. In addition, 10 volunteers from the laboratory who were regarded as drug-free subjects were also assessed using the same FIT. Among the 62 volunteers, 39 of them were detected with ketamine in their oral fluid. Of these ketamine users, 21 of them (54%) with only ketamine found in their oral fluid samples while the rest (18 subjects) of them had other drugs (i.e. MA, MDMA, benzodiazepines and/or THC) in addition to ketamine. Of the 21 ketamine-only users, 15 of them (71%) were successfully identified by FIT. It was found that when salivary ketamine concentrations were greater than 300 ng/mL, signs of impairment became evident, with over 90% detection rate using the FIT. By comparing the FIT observations on the 21 ketamine-only users with the drug-free subjects, the typical signs and symptoms observable for subjects under the influence of ketamine included LOC, HGN, elevated pulse rate and in general, failing the divided attention tests, especially the walk-and-turn and one-leg stand.     

School Characteristics,Strain, and Adolescent Delinquency: a Test of Macro-Level Strain Theory in China

Despite the important role of schools in influencing juvenile delinquency, limited research has investigated the contextual effects of schools on delinquency. Using the framework of macro-level strain theory, this study investigates the effects of school-level strain on delinquent behavior among Chinese adolescents. The sample comprises 1411 adolescents from 32 middle schools in Guangzhou, a large city in Southern China. Results from multilevel regression models show that school-aggregated level of strain is positively associated with both self-destructive and other-directed delinquent behaviors, after adjusting for individual strain and other sociodemographic variables. Specifically, school-level anticipated educational goal blockage and negative treatment by teachers are positively associated with self-destructive behavior, whereas school mean level of negative treatment by peers is positively related to other-directed behavior. Although individual-level strain is positively associated with both types of delinquency, it only partially mediates the effect of school-level strain on self-destructive delinquent behavior. This study also investigates whether school-level variables may condition the strain-delinquency relationship. The results show a significant interaction between personal strain and overall delinquent schoolmates on both self- and other-directed delinquent behaviors, indicating that school-level delinquent peers significantly exacerbate the effect of strain on delinquent behaviors. These findings suggest that the effort to reduce juvenile delinquency should target practices to alleviate both individual strain and aggregate strain, and provide more resources and support for students, particularly those in schools with substantial disruptive student behaviors, to legitimately cope with strains.