Word: tensions
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Dates: during 1990-1999
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Given the concrete challenges that California faces in trying to absorb and appease so many diverse groups -- challenges to the school system, the housing market, the job market, the infrastructure -- it is ironic that some of the fiercest battles revolve around largely symbolic issues. Much of the tension arises from misunderstandings rooted in the clash of cultures. These days it is impossible even to formulate stereotypes about Asians or Hispanics, because those categories conceal much more than they reveal. Koreans and Japanese continue to deride one another; Peruvians resent being mistaken for Mexicans. The largest Asian group...
...researchers found that the surface tension of these extracts was consistently higher than that of extracts prepared from infants without the disease...
Avery and Mead concluded that something which regulates surface tension in the lung must be absent in those babies with hyaline membrane disease. If unregulated, surface tension causes alveoli--the air-carrying sacs of lungs--to collapse, followed by the collapse of the lungs...
...this point, scientists began investigating the differences in the infants' lungs, and specifically what in their composition might be affecting surface tension, says Avery...
Because of its inherent low surface tension, surfactant can move easily through the lung, distributing very evenly, Avery says...