Scientists analyze branch patterns in trees and art, from da Vinci to Mondrian
The math that describes the branching pattern of trees in nature also holds for trees depicted in art—and may even underlie ...
In a First, Physicists Set an Upper Limit in the Search for Hybrid Mesons
For the first time, researchers established upper limits on the photoproduction cross sections of a hybrid meson.
BMJ4d
Observational research methods. Research design II: cohort, cross sectional, and case-control studies
Cohort, cross sectional, and case-control studies are collectively referred to as observational studies. Often these studies are the only practicable method of studying various problems, for example, ...
thorax.bmj5d
Airway inflammation in cystic fibrosis: molecular mechanisms and clinical implications
3 Department of Pediatrics, Institute of Asthma, Allergy and Immunology, Tel Aviv University School of Medicine, Assaf Harofeh Medical Center, Zerifin, Israel Correspondence to Professor Eitan Kerem, ...