Tác giả: Robert M. Bell

The census coverage measurement programs have historically addressed three primary objectives: (1) to inform users about the quality of the census counts; (2) to help identify sources of error to imp …

The census coverage measurement programs have historically addressed three primary objectives: (1) to inform users about the quality of the census counts; (2) to help identify sources of error to imp …

Lipids traditionally have been viewed as serving two functions: to form cellular membranes and to serve as energy stores. During the last two decades, a new role for lipids has taken center stage: li …