نتایج جستجو برای: development of new asbestos
تعداد نتایج: 21437904 فیلتر نتایج به سال:
The pathogenesis of asbestos-related lung diseases is complicated and still poorly understood. Studies on animal models and cell cultures have indicated that asbestos fibres generate reactive oxygen and nitrogen species and cause oxidation and/or nitrosylation of proteins and deoxyribonucleic acid as a marker of cell injury. These effects are potentiated by the inflammation caused by the fibres...
The time is appropriate for writing about asbestos use, with the 21st century in full sway and on the eve of the Rio+20 United Nations Conference on Sustainable Development, scheduled to discuss the planet’s sustainability. The success of sustainability hinges on political guidelines to ban and/or reduce harmful chemical substances still in use, including pesticides, benzene, and asbestos. Asbe...
the present research was conducted to accomplish two purposes. firstly, it aimed to explore and describe schematic structure or what halliday and hassan (1989, p.64) have called “generic structure potential” (gsp) of american english, iranian persian and iranian english newspaper editorials within systemic functional linguistics. secondly, a quantitative cross-comparison was made to investigate...
Malignant mesothelioma (MM), linked to asbestos exposure, is a highly lethal form of thoracic cancer with a long latency period, high mortality and poor treatment options. Chronic inflammation and oxidative tissue damage caused by asbestos fibers are linked to MM development. Flaxseed lignans, enriched in secoisolariciresinol diglucoside (SDG), have antioxidant, anti-inflammatory and cancer che...
WIDESPREAD recognition of asbestosis dates from the work of Merewether and Price in 1930. They investigated 363 asbestos workers and concluded that there was a pneumoconiosis resulting from asbestos inhalation, that this condition shortened life, and that measures to diminish the atmospheric concentration of asbestos dust would reduce the incidence of the disease. In 1931 asbestosis was accepte...
The International Labour Organization-World Health Organization Outline for the Development of National Programmes for Elimination of asbestos-related diseases recommends the “Enhancement of international cooperation to stimulate the transfer of know-how on alternatives to asbestos and the best practices for prevention of asbestos-related diseases” as a strategic action to be developed at natio...
in new management approaches, in the organizations with inflexible structure, existing of red tapes and interruptions caused by limitations and also non-compliance with environmental changes, create demotivation among staff. with regard to the influence of job motivational potential and its relationship to the type of organizational structure( enabling and dissuasive), the goal of this research...
OBJECTIVE We sought to estimate the lifetime risk of asbestos-related cancer for residents of Lower Manhattan attributable to asbestos released into the air by the 9/11 attack on New York City's World Trade Center (WTC). METHODS Exposure was estimated from available data and reasoned projections based on these data. Cancer risk was assessed using an asbestos risk model that differentiates asb...
abstract: in the paper of black and scholes (1973) a closed form solution for the price of a european option is derived . as extension to the black and scholes model with constant volatility, option pricing model with time varying volatility have been suggested within the frame work of generalized autoregressive conditional heteroskedasticity (garch) . these processes can explain a number of em...
Quebec’s asbestos mines have operated for 130 years and made Quebec a world leader in export of asbestos over the past century. Even though the scientific evidence was overwhelming that use of asbestos was causing epidemics of asbestos-related diseases and death, the Quebec and Canadian governments continued to give the asbestos industry unquestioning financial and political backing. This legit...
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