منابع مشابه
A Worn-Out Welcome
A 298 W hen Iceland became the first country to ban most forms of asbestos in 1983, 1 global use hovered around 4.3–4.7 million metric tons per year. 2 Twenty-five years later, with several dozen countries now implementing some form of ban, 1 that number had dropped to 2.1 million metric tons. 3 Today, while demand has plummeted in most developed countries, it continues to rise in those countri...
متن کاملArt hangs as science lure
The culmination of artist Aya Ben Ron's six-month residence at the Wellcome Trust in London has been hanging dramatically in the main atrium of the building throughout the summer. The 25-metre-long " Hanging " glistens with kaleidoscopic, colourful images and patterns but on closer scrutiny holds a darker message. The colourful images are revealed to comprise images of various human diseases an...
متن کاملWELCOME LETTER Welcome
Seismic analysis model is required to evaluate themechanical structural integrity of reactor internals when earthquakeis occurred. Finite element method is used to prepare a seismicanalysis model for reactor internals. The reactor internals arecomplex mechanical structures, so much analysis time is requiredto obtain the seismic responses with the detail finite element model....
متن کاملWhen Segregation Hangs by a Thread
The production of haploid gametes is essential for sexual reproduction in most eukaryotes. To achieve this haploid production, germline cells enter a specialized cell cycle called meiosis, in which two consecutive chromosome segregation events create gametes with half the number of chromosomes of diploid cells. Sister chromatids are held together by cohesins along the length of their arms and a...
متن کاملBe wary of the thorny QALY.
We have arrived at a new era for health care, one that will be dominated by the BIG question can we afford it? Currently in Ireland, the Health Information and Quality Authority (HIQA) promotes the use of QALYs in cost effective analysis of Health Technology Assessments (HTAs), which it then presents to the Health Service Executive (HSE). The QALY is also used in the UK by the NHS to determine ...
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ژورنال
عنوان ژورنال: Nature
سال: 1993
ISSN: 0028-0836,1476-4687
DOI: 10.1038/361106a0