1. introduction one of the most important conditions to have dusty weather beside of unstable weather is existence or non-existence of humidity. unstable weather having enough humidity will produce rain and thunder storm, else if the result will be dust storm. number of particles of dusty storm is depended to wind speed, sec of soil and its dimension. furthermore, vegetation type has importance...

Water quality is a big issue that mankind facing in recent years. separated from other environmental components, because it not substitutable. The water cycle constitutes the basic dynamics of life and economy cycle. resources are limited exposed to many human-induced negative effects. Fresh on our planet only 2.5% resources. an indispensable resource for all living things vital value. Life wit...

coronary artery disease is one of the main causes of mortality in most developed countries. there is also an increasing rate of mortality in developing countries where in addition to coronary artery disease, infection diseases still not have been controlled. although, now a day coronary artery disease is responsible for half of deaths in developed countries, this regrettable event is increasing...

background: maintaining a balance between cost-effectiveness and the delivery of quality patient care is a continual challenge to modern health care systems. in addition to negative effects on the patient and his family's quality of life, readmission after major surgeries imposes substantial adverse economic effects on the health care delivery system. therefore, causes of readmission to alzahra...

Pollution is the introduction of contaminants into an environment that causes instability, disorder, harm or discomfort to the ecosystem and ultimately the inhabitants. Pollution can take the form of noise. This study attempted of Aligarh city. The menace of noise pollution is growing in the city day by day due to increase in population, rapid industrialization, urbanization, phenomenal growth ...

Human health concerns and the dissemination of anthropogenic substances with unknown consequences are the reasons most often given why disposal of municipal sewage sludge in landfills or using the organic waste as biofuel is preferable to land application. But no "fertilizer" causes more nitrogen pollution than sludge when applied according to Virginia law. Poultry litter is the only other "fer...