منابع مشابه
A Scale-sensitive Test of Attraction and Repulsion between Spatial Point Patterns∗
There exist a variety of tests for attraction and repulsion effects between spatial point populations, most notably those involving either nearest-neighbor or cell-count statistics. Diggle and Cox (1981) showed that for the nearestneighbor approach, a powerful test could be constructed using Kendall’s rank correlation coefficient. In the present paper, this approach is extended to cell-count st...
متن کاملFatal attraction
L ook carefully at a solitary animal and you will find that it is not so alone after all. Animals play host to entire ecosystems that teem with diverse life. Some of the microbes that live on (or in) animals are beneficial to their host. However, these microbes' more sinister brethren, parasites and pathogens, cause damage and disease. Between these two extremes is a class of organisms that, it...
متن کاملFetal Attraction
Parents and health care practitioners alike cringe at the mere thought of exposing children to agents associated with cancer. For this reason, the medical world has traditionally shied away from administering prenatal X rays, long known to increase the risk of childhood leukemia. But little research has examined the effects of diagnostic X rays after birth, which are commonly prescribed by doct...
متن کاملMedical Tourism Attraction of Tehran Hospitals
Introduction: Today the market of medical tourism is growing as one of the competitive and profitable industries in the world. The aim of this study was to determine medical tourist attraction in Tehran hospitals. Methods: This is a descriptive study which was carried out in 8 hospitals of Tehran in 2012. 195 people from the managing boards of these hospi...
متن کاملTraction, Contraction … Attraction
Historically, at first it was believed that contraction forces were directly applied by the newly synthesized collagen at the site of the wound. Later it was shown that cells mediate this process. Fibroblasts are considered to have the capital role of mediating contraction that appears to be a coordinated multistage process in both the intracellular and extracellular levels. The fibrous and str...
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ژورنال
عنوان ژورنال: The Boston Medical and Surgical Journal
سال: 1849
ISSN: 0096-6762,1533-4406
DOI: 10.1056/nejm184910030410902