BACKGROUND The etiologies of oral disease are generally progressive and cumulative, such that compared with younger individuals, middle-aged and elderly people are at greater risk of active dental caries and periodontal disease risk. They usually suffer from multiple oral diseases, and obstacles to their use of dental care services are numerous. OBJECTIVES The objectives of this study were to...

BACKGROUND Cardiovascular risk factors tend to be clustered. Variations in clusters across populations have not been widely investigated. This study aims to compare the prevalence and clustering of major cardiovascular risk factors between adults in the Netherlands and China. METHODS A total of 6542 Dutch adults was recruited from 2001 to 2006 for the Utrecht Health Project, an ongoing cohort...

BACKGROUND Brucellosis is a common zoonotic disease and remains a major burden in both human and domesticated animal populations worldwide. Few geographic studies of human Brucellosis have been conducted, especially in China. Inner Mongolia of China is considered an appropriate area for the study of human Brucellosis due to its provision of a suitable environment for animals most responsible fo...

WEI DING, KRISHNA N. REDDY, L. JASON KRUTZ, STEVEN J. THOMSON, YANBO HUANG, and ROBERT M. ZABLOTOWICZ Crop Production Systems Research Unit, Agricultural Research Service, U.S. Department of Agriculture, Stoneville, Mississippi, USA Northeast Agricultural University, Agronomy College, Department of Plant Protection and Key Laboratory of Soybean Biology in Chinese Ministry of Education, Harbin, ...

The frequent occurrence of fatalities from wildfires is an ongoing problem in China, even though great improvements have been achieved overall wildfire management recent years. We analysed the patterns and correlative environments forest fires China 1951 to 2018. Changes fire policies affected changes numbers fires, area burned number before after 1987, large Great Black Dragon Fire that Daxing...

In this paper, a novel nonlinear robust damping controller is proposed to suppress power oscillation in interconnected power systems. The proposed power oscillation damping controller exhibits good nonlinearity and robustness. It can consider the strong nonlinearity of power oscillation and uncertainty of its model. First, through differential homeomorphic mapping, a mathematical model of the s...

The black soil region of Northeast China has suffered from severe soil erosion by water. Hillslope and gully erosion are the main erosion types. The objective of this research was to integrate the assessment of hillslope and gully erosion and explore spatial coupling relations between them in the Mushi River sub-catchment using geographical conditions monitoring (GCM) including remote sensing (...

This study analyzes the changes in drought patterns in China’s major crop-growing areas over the past 60 years. The analysis was done using both weather station data and Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI) rainfall data to calculate the Standardized Precipitation Index (SPI). The results showed that the occurrences of extreme drought were the most serious in recent...