نتایج جستجو برای: tropical countries
تعداد نتایج: 319594 فیلتر نتایج به سال:
Corona viruses are large group of viruses that can cause sickness ranging from normal flu to severe respiratory diseases. The new novel corona virus (nCOV-19) or COVID-19 is a new kind of pandemic virus that did not identified before in humans. Global nations have heightened their surveillance in the quick diagnosis of potential cases across the COVID-19. After it had originated in China more c...
The main challenge of vaccine control of poliomyelitis in the 1980s is in the subtropical and tropical regions of the world where "lameness" surveys in recent years have shown how very high the average annual incidence of paralytic poliomyelitis can be in both rural and urban areas in the absence of epidemics. The procedures by which oral polio vaccine (OPV) rapidly eliminated all or almost all...
Several international conservation organizations (ICOs) created in the developed world to promote conservation in the tropics are now extremely outspoken and powerful, due in large measure to their access to capital. We acknowledge that ICOs have been critical stakeholders in shaping international environmental policies. We also recognize that there have been successful collaborations between I...
Following the ban of synthetic antibiotics as antimicrobial agents and growth promoters, poultry nutritionists are now trying to find antibiotic substitutes. Agro-industrial by-products are abundant in tropical countries and have been used as the alternatives to conventional feedstuffs in poultry rations. These by-products are also known to contain several bioactive compounds such as oligosacch...
this research is about the political economy of china in central asia. in this research the political & economic interactions affected on chinas political economy in central asia are examined. chinas goal of presence in central asia including political-security, economic and energy goals is described in one part. in another part, the trade relations between china and central asian countries ar...
This paper presents environment friendly refrigerant R290 as a solution to the environmental concerns like depletion of ozone layer and rise in global warming because of wide use of synthetic refrigerants R22 and R134a. The water cooler is the widely used refrigeration application in warm climatic countries. Refrigerant R22 and R134a are predominantly used refrigerants in water cooler refrigera...
OBJECTIVE To characterize influenza seasonality and identify the best time of the year for vaccination against influenza in tropical and subtropical countries of southern and south-eastern Asia that lie north of the equator. METHODS Weekly influenza surveillance data for 2006 to 2011 were obtained from Bangladesh, Cambodia, India, Indonesia, the Lao People's Democratic Republic, Malaysia, the...
Deforestation and habitat loss are widely expected to precipitate an extinction crisis among tropical forest species. Humans cause deforestation, and humans living in rural settings have the greatest impact on extant forest area in the tropics. Current human demographic trends, including slowing population growth and intense urbanization, give reason to hope that deforestation will slow, natura...
Deforestation and habitat loss are widely expected to precipitate an extinction crisis among tropical forest species. Humans cause deforestation, and humans living in rural settings have the greatest impact on extant forest area in the tropics. Current human demographic trends, including slowing population growth and intense urbanization, give reason to hope that deforestation will slow, natura...
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