Selenolated Copper Hydride Clusters for Visible-Light Photocatalytic Iodofluoroalkylation of Alkynes.

The photocatalytic iodofluoroalkylation of unsaturated systems is of great interest, with significant potential in the synthesis of fluorinated compounds. Herein, we introduce a selenate-protected hydride cluster, [CuH(dppy)(PhCHSe)](PF) (dppy = diphenyl-2-pyridylphosphine, PhCHSe = benzylselenate), that enables visible light-mediated iodofluoroalkylative difunctionalization of alkynes. Single crystal X-ray structural analysis reveals that the cluster comprises a hydride-embedded hexagonal close-packed Cu kernel of the symmetry, coprotected by benzylselenate and dppy ligands.

Human Immunodeficiency Virus Infection-Associated Mortality during Pulmonary Tuberculosis Treatment in Six Provinces of China.

Objective: To investigate the risk factors attributable to tuberculosis-related deaths in areas with human immunodeficiency virus (HIV) infection epidemics.

Methods: A prospective cohort study of newly registered patients in tuberculosis (TB) dispensaries in six representative Chinese provinces was conducted from September 1, 2009 to August 31, 2011. Risk factors for TB-associated death were identified through logistic regression analysis.

[Relationship between tuberculosis prevalence and socio-economic factors in China].

Objective: In order to figure out how and to what degree the social and economic development and control strategy influencing the epidemics of tuberculosis and to provide reference for tuberculosis prevention and control in China.

Methods: Based on the data from the nationwide random surveys on tuberculosis in 1979, 1984/1985, 1990 and 2000 and the indexes on social and economic development of China, correlation coefficient was used to analyze the relationship of three factors including (1) the change of epidemic situation of tuberculosis from 1979 to 2000; (2) the level of social and economic development; (3) the implementation of Health V Project.

Results: The prevalence rate of smear positive tuberculosis was significantly correlated to per capita net income of rural population, consumption level of city population, per capita GDP, density of population, and proportion of rural population.

[The impact of geriatric tuberculosis patients on the tuberculosis control strategy in China].

Objective: To study the current status of geriatric tuberculosis (TB) and its impact on TB control program under the directly observed treatment short-course (DOTS) strategy in China.

Methods: Using the prevalence information regarding the epidemiology of geriatric TB from the National Random Survey in 2000, a case-control study was carried out to analyze the case detection, treatment and management of geriatric TB patients between DOTS area and non-DOTS area.

Results: The prevalence of sputum smear positive (SS+) in the age group of 65 or above was 440/100 000 which was 3.