نتایج جستجو برای: control studies
تعداد نتایج: 2580223 فیلتر نتایج به سال:
The ITER plasma control system has the same functional scope as the control systems in present tokamaks. These are plasma operation scenario sequencing, plasma basic control (magnetic and kinetic), plasma advanced control (control of RWMs, NTMs, ELMs, error fields, etc) and plasma fast shutdown. This chapter considers only plasma initiation and plasma basic control. This chapter describes the p...
The effects of coffee consumption on coronary heart disease (CHD) mortality remain uncertain. Recent meta-analyses"2 have produced equivocal findings, with weaker associations being seen in cohort than in case-control studies. Data regarding potential confounding factors have often been limited in these earlier studies. We have examined this issue in a large prospective study with a long follow...
OBJECTIVE To determine the prevalence of and factors associated with pulmonary tuberculosis (PTB) in an urban prison in sub-Saharan Africa. DESIGN A cross-sectional survey. SETTING The Central Prison of Douala, Cameroon. RESULTS Two thousand four hundred and seventy four (87.4%) out of 2830 inmates underwent screening. Twenty seven (1.1%) of the inmates were under treatment for smear-posi...
Futurists have recently proposed that “holographic telepresence” will be one of the lifechanging technologies of the next few years. But what exactly do we mean by holographic TV? Did Al Gore really appear as a hologram at Live Earth Tokyo? What technologies and processes would it require to display live holograms of real scenes? Do we have to capture directly and transmit actual holographic di...
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