Recent reports show that an estimated one-fifth of the world's population is suffering from toxic air pollution (Qu, 2013; Liu, 2013; Zhou et al., 2013). This is especially evident in China, where PM2.5 covers one-seventh of China's total territory. In order to combat this disaster, ...
The acceleration of population growth has increased the demands on agricultural systems and such demands have primarily been met in the last 50 years with increased production output through both genetic improvement and management [1]. It is predicted that the world population will exceed ten billion...
Population Characteristics. Current Population Reports. Geographical Mobility: March 1996 to March 1997 (Update) (Includes Tables). Population Characteristics. Current Population Reports... CS Faber - 《Washington D》 被引量: 0发表: 2007年 Estimates of the population of the United States to May 1...
Current contrasting population trends among North American hummingbirdsAs pollinators, hummingbirds play a critical role for both the function of ecological communities and in providing ecosystem services for people. To examine the conservation status of North American hummingbirds, we analyzed Breeding...
They are the fastest grow- ing population of children, and they are lead... DJ Hernandez,NA Denton,SE Macartney - 《Society for Research in Child Development》 被引量: 148发表: 2008年 Public-aided crises in the French fishing sector According to the media the French fishing industry has ...
Clinical application domains are mainly chronic diseases, the elderly population and paediatrics. Internationally, we observe a trend towards tools and services not only for professionals but also for patients and citizens. However, their impact on the patient–provider relationship and their design for...
of 2000 to 50.5% in 2008.Analysis of the population dynamics suggests the wintering population of red crown crane is likely to remain stable and/or to increase,while some of the population will migrate out of this region.Based on these findings,the present article discusses the conservation ...
thatbytheyear2000therewillbe6.2billionpeoplethroughouttheworld.Onewaytoappreciatethisdramaticdifferenceinsuchabstractnumbersistoreducethetimeframetosomethingthatismoremanageable.Between8000BCand1650,anaverageofonly50,000personswasbeingaddedannuallytotheworld’spopulationeachyear.Atpresent,thisnumberisaddedeverysixhours...
Genetic and environmental risk factors for Parkinson's diseasein a Chinese population An epidemiological study of the environmental and genetic factors as well as the possible interplay between them was conducted among 215 patients with Park... DKY Chan,J Woo,SC Ho,... - 《Journal of Neurology...
2the impact of aprimary productionresponse as seen inFig. 2on a density-dependent population conceals a set of more interesting patterns, including extinction. The situation inFig. 2involves dynamics that allow exact calculations, that is, in this case, simple integrations of the functions without...