نتایج جستجو برای: exposures
تعداد نتایج: 31939 فیلتر نتایج به سال:
The Chinle Formation of Arizona is a highly fossiliferous terrestrial unit from the Late Triassic Period. Fossil vertebrate collections from the Chinle Formation date back to the late 1890s and document a diverse fauna that is correlative with other Late Triassic faunas worldwide. No fewer than 18 holotype specimens including metoposaurids, phytosaurs, aetosaurs, crocodylomorphs, dinosauromorph...
The time course of visual letter recognition was investigated in a single-stimulus identi®cation experiment. On each trial, a randomly chosen stimulus letter was presented at 1 of 12 equiprobable positions that were equally spaced around the circumference of an imaginary circle centered on ®xation. Exposure duration was varied from 10 to 200 ms, and the letter was followed by a pattern mask. Th...
This empirical paper models three structural factors that are hypothesized to affect the turnaround times between the publication of security advisories and Common Vulnerabilities and Exposures (CVEs). The three structural factors are: (i) software product age at the time of advisory release; (ii) severity of vulnerabilities coordinated; and (iii) amounts of CVEs referenced in advisories. Altho...
statement of the problem: exposure to patients’ blood and body fluids would prone the dental students to the risk of blood borne infections. several studies have shown a high prevalence of these exposures in dental settings particularly in developing countries. however, few studies have evaluated the epidemiology of these exposures in dental students in iran. purpose: to assess the epidemiology...
This paper investigates the reality of shared manipulation of objects between users in distributed walkin displays and presents solutions to address the effects of constraints of network technology. Various forms of shared interaction are examined through a single structured task of building a Gazebo. Communication of tracking data can saturate the network and result in delay or loss of message...
Since the 1960s, the incidence of malignant mesothelioma in Canada has increased dramatically because of work-related asbestos exposures. Treatment options are limited. Although chemotherapy is now an accepted standard in the management of advanced disease, uncertainty surrounds the roles of radical surgery and radiation. In March 2007, a symposium was held in Vancouver, B.C., to review the cur...
background: poinsettia (euphorbia pulcherrima), holly (ilex opaca) and mistletoe (phoradendron flavescens) adorn homes during the christmas and new year holiday season and create the potential for curious children to sample their colorful leaves and enticing berries. this study was aimed to review the american association of poison control centers national poison data system (aapcc npds) to des...
Background: Welding is considered as an essential component of many industries and the National Institute for Safety and Health in 1988 estimated that at least two million workers are working as welder so knowing how to control occupational exposures in this industry, to protect and promote the health of welders is essential. Methods: This reviewing article consists of several parts, including...
To determine empirically the most probable mode of interaction of chemicals given in combination, major occupational health, environmental health, and toxicology journals published in the past 10 years were sorted by eye for studies on noncarcinogenic and nonteratogenic effects of industrial and environmental chemicals in combination. Of the 159 relevant studies, 49 reported "more than additive...
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