Main environmental problem

Xem 1-15 trên 15 kết quả Main environmental problem
  • Mekong River, the 11th largest river in the world, is the main water source for irrigation, fishery, and domestic use… In short, the living of the whole population in the Mekong Delta (MD) is depending and will be depended on this resource. The MD of Vietnam is located at the most downstream part of the Mekong river basin. With a population of 17 million inhabitants living in 4 million hectares of land, the MD has great potentials for agricultural production. The MD is the most important agricultural production region for the whole country.

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  • Over the past few decades, life-threatening environmental concerns have surfaced in the developing world. Countrysides are coming under pressure from increasing numbers of farmers and the landless. Cities are filling with people, cars, and factories.

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  • As a result of the gloomy economic climate in Europe brought about by the ongoing crisis affecting all enterprises (particularly SMEs) in France, the French government has recently decided to create different poles of innovation and research associated to the activities of enterprises. The objective is to propose new ideas for helping these enterprises to be more efficient and able to resist the threat to their existence from globalisation. One of the difficulties of these enterprises is that they find it difficult to penetrate the European market and export their products.

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  • As is well known, a large part of the remittances is channelled via the informal financial system through money transfer companies. So far, the access of migrants and their families to the formal financial system has been very limited due, in part, to the fact that a large proportion of the remittance senders are in an irregular situation in the developed countries. Cost and insecurity are usually pointed out as the main disadvantages to transferring remittances via the informal system.

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  • Areas with high concentrations of air-borne particulate matter are more likely to experience fogs, because these particles are preferred nucleation sites for water droplets. Smoke and soot are also very undesirable aesthetically. Soot is formed during combustion when the supply of oxygen is insufficient for complete conversion of carbon to carbon oxides. Its formation is mainly a problem in the combustion of liquid and solid fuels (oil, coal, or wood), because molecular-scale mixing of fuel and oxygen is not as easy here as it is in the combustion of natural gas (see below).

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  • Contaminated bottom sediments and their negative impacts on water quality are a major problem in surface waters throughout the United States as well as in many other parts of the world. Even after elimination of the primary contaminant sources, these bottom sediments will be a main source of contaminants for many years to come. In order to determine environmentally-effective and cost-effective remedial actions, the transport and fate of these sediments and associated contaminants must be understood and quantified.

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  • Soil erosion affects a large part of the Earth surface, and it represents one of the most relevant environmental problems worldwide. Intense land degradation processes that destroyed civilizations in the past are still going on at present. Accelerated soil erosion is one of the main soil threats, as the natural balance between soil formation and loss may be seriously compromised, leading to desertification and permanent loss of fertility and protective function. Soil erosion is not only related to agricultural activities and farming practices, but also to land management in general....

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  • This paper presents the results of soil characteristics study and orientation for rational and sustainable use of major soil types in Thai Thuy District, Thai Binh Province, where is facing many environmental problems. The interactive process between river, sea and human activities over time has resulted in the characteristics of 10 soil types, which are grouped in 4 main classes (acid sulfate soil, saline soil, alluvial soil and sandy soil). They have been used for agricultural production (mainly for rice and other crops growing).

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  • For many years, interest in the prevention of diseases in children was concentrated on improvement of the postnatal environment. However, since the major problems of infectious diseases and nutrition were solved with the help of vaccinations and better feeding regimes, it became clear that new approaches were needed to prevent and treat the disorders and problems we are facing now - problems mainly arising in prenatal life.

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  • ADC LSA-PLUS® connection systems include connection, disconnection and switching modules for eight or ten pairs, all featuring the patented LSA-PLUS interconnection displacement connection (IDC) technology. LSA-PLUS connection systems support connection, line splitting, switching and earthing of connections in telecommunication and data networks. The contact is resistant to climatic and other environmental problems. Technical contact security results in the formation of a gas-tight connection with very low transmission resistance.

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  • During the last decades, cancer diseases have increased all over the world. The low quality of food and strong pollution of environment are the main prerequisites for carcinogenesis. The main problem for scientists is to find strategy for prevention of cancer diseases. Therefore, the information about models for studying carcinogenesis and mutagens which appear during cooking, environmental pollutants, and tests for specific detection of carcinogens is particularly important.

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  • This volume details some of the latest advances in spectral theory and nonlinear analysis through various cutting-edge theories on algebraic multiplicities, global bifurcation theory, non-linear Schrodinger equations, non-linear boundary value problems, large solutions, metasolutions, dynamical systems, and applications to spatial ecology.

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  • Understanding Marketing Management-Importance and scope. Marketing strategies and plans- marketing and customer value. Marketing insights-information and scanning the environment, analyzing the macro environment. Rural Marketing: The profile of rural market of India. The main problem area in rural marketing, channel Management in rural markets, marketing communication in Rural Markets, Market Segmentation in rural market.

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  • The present decade has been marked by a retreat from social concerns. Scientists bring to our attention urgent but complex problems bearing on our very survival: a warming globe, threats to the Earth's ozone layer, deserts consuming agricultural land. We respond by demanding more details, and by assigning the problems to institutions ill-equipped to cope with them. Environmental degradation, first seen as mainly a problem of the rich nations and a side effect of industrial wealth, has become a survival issue for developing nations.

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  • The Environmental Quality Laboratory (EQL) traces its origins to a series of discussions initiated by Caltech President Harold Brown on the feasibility of a Caltech Air Pollution Laboratory aimed at alleviating the smog problem in the South Coast Air Basin. In an address to the Institute for the Advancement of Engineering on February 28, 1970, [1] Dr. Brown summarized the main conclusions of a faculty-JPL study group on smog led by Professor Carver Mead that preceded the formation of the EQL.

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