Effect of ambient O on respiratory mortality and synergies with meteorological factors in Shenyang, China.

The impact of O on the respiratory system is a significant global problem. Nevertheless, there is insufficient information about its impact on respiratory disorders in northeast China. In this study, we used a generalized additive model (GAM) to determine the correlation between O concentrations and respiratory deaths based on the daily meteorological data, pollutant concentrations, and respiratory deaths from 2014 to 2016 in Shenyang, a typical city in northeast China.

Photoinduced Dehydrogenative Amination of Quinoxalin-2(1)-ones with Air as an Oxidant.

A facile and eco-friendly photoinduced dehydrogenative amination of quinoxalin-2(1)-ones with aliphatic amines without any metal, strong oxidant, and photocatalyst has been established for the first time. This reaction proceeding efficiently with air as the sole oxidant at room temperature obtains a wide range of 3-aminoquinoxaline-2(1)-ones in high yields with excellent functional group tolerance. The mechanistic studies show an interesting involvement of quinoxalin-2(1)-ones as a photosensitizer, which eliminates the requirement for external photocatalysts.

Assessment of mortality risks due to a strong cold spell in 2022 in China.

Background: With the intensification of global climate warming, extreme low temperature events such as cold spells have become an increasingly significant threat to public health. Few studies have examined the relationship between cold spells and mortality in multiple Chinese provinces.

Methods: We employed health impact functions for temperature and mortality to quantify the health risks of the first winter cold spell in China on November 26, 2022, and analyzed the reasons for the stronger development of the cold spell in terms of the circulation field.

Photoinduced Direct Electron Transfer between Quinoxalin-2(1)-ones and Alkyl Carboxylic Acids for C-H Alkylation.

The progress of efficient and sustainable approaches for decarboxylative coupling reactions is synthetically appealing due to the structural diversity, lack of toxicity, and widespread commercial accessibility of carboxylic acids. However, the decarboxylation reaction still encounters challenges related to the utilization of oxidants, catalysts, and prefunctionalization conditions. We report herein a mild method that facilitates direct electron transfer between alkyl carboxylic acids and excited-state substrates for C-H alkylation of quinoxalin-2(1)-ones without the involvement of any catalyst or additive.

Estimation of health risk and economic loss attributable to PM and O pollution in Jilin Province, China.

Ambient pollutants, particularly fine particulate matter (PM) and ozone (O), pose significant risks to both public health and economic development. In recent years, PM concentration in China has decreased significantly, whereas that of O has increased rapidly, leading to considerable health risks. In this study, a generalized additive model was employed to establish the relationship of PM and O exposure with non-accidental mortality across 17 districts and counties in Jilin Province, China, over 2015-2016.

Extreme temperatures and circulatory mortality in a temperate continental monsoon climate city in Northeast China.

Epidemiological studies have proven that extreme temperatures have a significant threat to public health. This study aimed to investigate the association between extreme temperatures and circulatory mortality from January 1, 2014, to December 31, 2016, in Harbin, a city with a cold climate in Northeast China. We set a maximum lag of 27 days to evaluate the hysteresis effects of different temperatures on circulatory mortality using a distributed lag nonlinear model (DLNM).

Effect of diurnal temperature range on outpatient visits for common cold in Shanghai, China.

To evaluate the correlations between diurnal temperature range (DTR) and the number of outpatient visits for common cold from Jan. 1, 2008, to Dec. 31, 2010, in the Shanghai metro area; we used a distributed lag non-linear model together with a Poisson regression model.

Short-term effect of PM on pediatric asthma incidence in Shanghai, China.

Recent epidemiological studies pointed out that air pollution has a significant impact on pediatric asthma. Shanghai is one of the biggest cities in China, and the short-term effect of atmospheric particulate matter on the incidence of pediatric asthma has become a hot topic. From January 1, 2009, to December 31, 2010, we used daily measurements of pollutant concentrations, daily weather data, and daily records of pediatric asthma hospital visits from local authorities to evaluate the short-term effect of air pollution on pediatric asthma incidence in Shanghai, China.

[Controlled observation on cauterization with electric pyropuncture needle for treatment of body surface abscess].

Objective: To probe and systematize the ancient cauterization with pyropuncture needle for evacuation of pus.

Methods: One hundred and eight cases of body surface abscess were randomly divided into 2 groups. The cauterization group (n=84) were treated by drainage with electric cauterization and the incision group (n=24) by drainage with incision.