Physical activity levels of children and adolescents with intellectual disabilities in Northern China.

Background: Limited research has looked at the physical activity (PA) among Chinese children and adolescents with intellectual disabilities.

Methods: The Children's Leisure Activities Study Survey-Chinese version was applied in evaluating PA levels among children and adolescents with intellectual disabilities.

Results: The data indicated that only 29.

Risk Factors and Prognosis in Patients with COVID-19 and Liver Injury: A Retrospective Analysis.

Purpose: COVID-19 is a new infectious disease with global spread. The aim of the present study was to explore possible risk factors and evaluate prognosis in COVID-19 with liver injury.

Methods: A retrospective study was conducted on 356 COVID-19 patients in the Third People's Hospital of Yichang, Hubei, China.

[Current situation and impact factors of acid deposition in main cites of Shandong Province].

Based on the monitoring data for years in Shandong Province, current situation of acid rain in every city was assessed, and the temporal distribution of the dry, wet and total sulfur deposition in Jinan and Qingdao were studied. The results showed that Qingdao which had the largest precipitation acidity was the single city whose annul average precipitation pH was below 5. 60.

Scenario simulation of water security in China.

Limited water resources, increasing demand, low use efficiency, and serious pollution result in severe water resource difficult in China. The evaluation of addressing water problems and the search for effective countermeasures that ensure sustainable water use are key to China's sustainable development. The "compound water security" consists of food security, life security, environmental security, and economic security.