نتایج جستجو برای: with population growth in urban areas
تعداد نتایج: 18705683 فیلتر نتایج به سال:
background: helicobacter pylori ( h. pylori ) is a global pathogen with a widely varied prevalence (30%-80%) among different countries and populations. this study aims to determine the prevalence of h. pylori in the population of arak, iran. materials and methods: this was an epidemiologic cross-sectional population-based study with multistage sampling. the population of arak according to the 2...
In advance crisis management of natural disasters, particularly earthquakes in urban areas is one of the necessities of urban planning. However, nowadays with the help of technology we can determine the risk of crisis in the urban areas and settlements. Due to population growth and increasing urbanization, the occurrence of natural disasters such as earthquake can cause terrible disasters in th...
deposite the different criticisms on contrastive analysis it has been proved that the results of it(when processed)can be usuful in a tefl environment,specially at the level of phonology.this study is an attempt to compare and contrast the sound systems of kurdish and english for pedagogical aims. the consonants,vowels,stress and intonation of the twolanguages are described by the same model-ta...
in developing and newly industrialized countries, population growth and migration contribute immensely to the development of megacities and mega urban areas. in most cases, the rapid development ofcities has far-reaching consequences for the ecosystem in general and the hydrological cycle in particular. the developments in china within the last decades show an interesting, but complex setting. ...
Increase in urban population and, the growth and spread of physical and social dimensions of cities has a significant impact on urban life, so that nowadays the concept of cities without regarding green spaces and its various forms is unthinkable. Hence the main objective of this research is to improve the quality of green space in the city of Miyaneh. This Research In terms of the target is an...
With decreasing of fresh water availability via population growth, collection and re-use of urban runoff as a non-drinking water source was suggested for the development of the cities located in dry area. But, non-point polluting sources in urban areas should affect the quality of urban runoff . A direct relationship was observed between rainfall characteristics and the amount of contaminants i...
what is called the problems of tehran metropolis now a days, is deep- rooted in the policies ofurban planning in our country. since not far past up to now, immigration from all over the country to tehran, irregular growth of urban population, inconsistency with urban infrastructure development, environmental pollution and low quality of living areas, erosion of self -growing fabric in most area...
With the increasing population in cities, particularly big cities, demand for public goods and services increased too. But, due to certain political-economic structure of the country, often the rates of supplies growth have been less than the demands’. The high-demand applications such as educational, for many reasons including, Lack of cities’ coordination executive bodies, financial problems ...
The human pressure on natural ecosystems and protected areas is steadily increasing. Urban growth is undeniably and irreversibly converting natural habitats as it is constantly expanding with population growth. In this study we analyze the urban expansion of mega city Calcutta over four time-steps (1975, 1990, 2000, 2010) as an example of expansion over time and threat to the surrounding enviro...
Currently, over 50% of the world’s population lives in urban areas. By 2050, this estimate is expected to be 70%. This urban growth, however, is not uniformly distributed around the world. The majority of it will occur in developing nations and create megacities whose populations exceed at least 10 million people. Not all urban areas, however, are growing. Some are actually losing populations b...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید