نتایج جستجو برای: rapid population increase
تعداد نتایج: 1678394 فیلتر نتایج به سال:
The continuing rapid age shift in recent years from predominately a younger to an older population in America and many other countries is a problem of great concern. Its socioeconomic implications for the distant future are quite unpredictable due to our inability to answer a few basic questions. How long will life expectancy continue to increase? What is the maximum possible length of life?
The intuition that population density increases the propensity of an epidemic to spread in cities is correct in the sense that increased density likely leads to an increase in the contact rate of an individual, which makes the reproduction number larger and leads to larger infectious disease outbreaks in dense areas. A wealth of research already suggests that smoking suppresses immune function ...
This paper examined the Nigerian population situation with specific reference to its history and growth by reviewing the available literature and documents. It discussed efforts made by different governments as regard population policies to influence demographic variables, increase welfare and standard of living of people and why these policies were ineffective. The paper also discussed the pos...
The increase in the population of the planet and the rapid economic growth and, consequently, the high consumption of energy has created many environmental problems in the globe. Due to these reasons and the lack of renewability of these fossil fuels, there has been a steep trend towards the production of renewable fuels from natural sources, one of which is the production of energy from biomas...
Plagioclase is the most abundant mineral in basaltic andesites in the north Gavkhouni. Olivine and pyroxene are the other rock forming mineral there. In their 3-dimensional shapes, they are unequal and varies between bladed to prolate. Plagioclase sometimes exhibit dusty texture, oscillatory zoning and sinusoid growth. Based on crystal size distribution data, the rate of crystal nucleation of p...
Objectives Over the past few decades, Iran has faced rapid demographic changes, including a sharp decline in birth rates and increased life expectancy. This has led to an increase in the average age of the population and an increase in the percentage of the elderly people which is called “the phenomena of aging”. The occurrence of this phenomenon in Iran is rapidly increasing, and therefore the...
BACKGROUND AND OBJECTIVES Evidence relating the rate of change in renal function, measured as eGFR, after antihypertensive treatment in elderly patients to clinical outcome is sparse. This study characterized the rate of change in eGFR after commencement of antihypertensive treatment in an elderly population, the factors associated with eGFR rate change, and the rate's association with all-caus...
1. Statement of the problem Dementia is now recognized worldwide as an increasing problem brought about by the rapid growth of the elderly population. The prevalence of elderly persons with dementia in Korea’s growing elderly population ranges from 6.8 to 10.8% of persons 65 and older (Kim & Choi, 2000), and this number is expected to increase spectacularly with the rapid increase of persons in...
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