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Explore 2,151 academic publications
2010 Rheumatoid arthritis classification criteria: An American College of Rheumatology/European League Against Rheumatism collaborative initiative
Abstract Objective The 1987 American College of Rheumatology (ACR; formerly, the American Rheumatism Association) classification criteria for rheumatoid arthritis (RA) have been...
The Physical Activity Guidelines for Americans
The Physical Activity Guidelines for Americans, 2nd edition, provides information and guidance on the types and amounts of physical activity that provide substantial health bene...
Solar Water Splitting Cells
ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTADDITION / CORRECTIONThis article has been corrected. View the notice.Solar Water Splitting CellsMichael G. Walter, Emily L. Warren, J...
Technological Pedagogical Content Knowledge: A Framework for Teacher Knowledge
Research in the area of educational technology has often been critiqued for a lack of theoretical grounding. In this article we propose a conceptual framework for educational te...
Heart Disease and Stroke Statistics—2020 Update: A Report From the American Heart Association
Background: The American Heart Association, in conjunction with the National Institutes of Health, annually reports on the most up-to-date statistics related to heart disease, s...
Synthesis and characterization of nearly monodisperse CdE (E = sulfur, selenium, tellurium) semiconductor nanocrystallites
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and characterization of nearly monodisperse CdE (E = sulfur, selenium, tellurium) semiconductor nanocrystallitesC. B. Murra...
GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
On August 17, 2017 at 12∶41:04 UTC the Advanced LIGO and Advanced Virgo gravitational-wave detectors made their first observation of a binary neutron star inspiral. The signal, ...
Visible Light Photoredox Catalysis with Transition Metal Complexes: Applications in Organic Synthesis
ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTVisible Light Photoredox Catalysis with Transition Metal Complexes: Applications in Organic SynthesisChristopher K. Prier, Danica A. R...
A Modified Poisson Regression Approach to Prospective Studies with Binary Data
Relative risk is usually the parameter of interest in epidemiologic and medical studies. In this paper, the author proposes a modified Poisson regression approach (i.e., Poisson...