نتایج جستجو برای: commercial centers
تعداد نتایج: 249008 فیلتر نتایج به سال:
rivers and runoff have always been of interest to human beings. in order to make use of the proper water resources, human societies, industrial and agricultural centers, etc. have usually been established near rivers. as the time goes on, these societies developed, and therefore water resources were extracted more and more. consequently, conditions of water quality of the rivers experienced rap...
This paper describes a family planning service for adolescent males in an inner-city area. The program utilized the distribution of free condoms through local commercial outlets (barber shops, grocery stores, pool hall, restaurant). The proprietors agreed to distribute condoms in the target area which included apprnximately 3,000 males aged 12-26 years old. In a 13 week feasibility test, over l...
PCR is, to date, the only available tool for the detection of GB virus C (GBV-C) and hepatitis G virus (HGV) RNAs. Twenty-two French laboratories participated in a quality control study to assess the sensitivity and specificity of their procedures. The panel included 13 positive controls and 7 negative controls. The laboratories used either in-house PCR techniques adapted from the literature or...
LAST SPRING, A GROUP CALLED MAYors Against Illegal Guns, a coalition of US mayors who want more stringent regulation of firearm sales, unveiled a television commercial featuring clips from speeches by the 3 leading presidential candidates. In these clips, Sen Hillary Rodham Clinton (D, NY), Sen Barack Obama (D, Ill), and Sen John McCain (R, Ariz) said they oppose a “gun show loophole” that allo...
We fabricate nanosized superconducting YBa(2)Cu(3)O(7-δ) (Y-123) and nonsuperconducting Y(2)BaCuO(5) (Y-211) powders using carbon nanotubes as template. The mean particle size of Y-123 and Y-211 is 12 and 30 nm, respectively. The superconducting transition temperature of the Y-123 nanopowder is 90.9 K, similar to that of commercial, micrometer-scale powders fabricated by conventional processing...
Urban vibrancy is an important indicator of urban prosperity. Evaluating the correlation between and housing prices increasingly necessary. However, most studies have ignored temporal characteristics only considered its spatial nature. This study optimizes identification model centers proposes a novel for evaluating time-dynamic accessibility centers. The takes into account real-time changes in...
About at the break of sixties and seventies of this century the first functional and publicly used information system developed from originally experimental and non commercial applications of computer technology in storing and retrieval of document records. At the beginning these were mostly parallel editions of bibliographies in both printed and magnetic format. Thus developed on one hand data...
Densely populated areas such as city centers are often sprinkled with numerous wireless access points operated for commercial or private use. Together they create what's known as tragedy of the commons phenomenon: without proper coordination, a signi cant amount of license-exempt radio frequency resources is wasted due to contention at shared medium access. In this paper we argue that both comm...
This paper reports on methods for the analysis of electrical machines by combined electromagnetic and thermal models using commercial software which can be an aid to the design of these machines. Examples using a brushless permanent-magnet motor and an induction motor illustrate the tools available and techniques possible.
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