نتایج جستجو برای: natural and artificial lakes
تعداد نتایج: 16921214 فیلتر نتایج به سال:
Introduction: The self-repair process cannot occur in the skin lesions, therefore, skin replacements are used due to the formation of a scar, which resulted in the complete loss of skin. Artificial skin should have the same specifications as the natural skin. The finite element methods were used in this study to evaluate the biomechanichal properties of natural and artificial skins. Materials ...
nowadays,tourism industry considered as one of the main sources of income of a country.unfortunately and despite of owning plenty of cultural historical and natural attractions, iran has not reached to a proper position in this field. besides, the historical cities of a country are considered as the income resource and national wealth of it. qazvin with a rich cultural precedent, have suitable ...
Growth of four species of fish are compared in three different types. of Iowa artificial lakes and reservoirs. The lakes were classified by similarity of physical, chemical, and biological characteristics. Scale samples and total length measurements were obtained from 14,705 fish at 71 impoundments. Largemouth bass, bluegill, black crappie, and white crappie growth was greatest in Group I lakes...
Accelerated degradation of the wetlands and fragmentation of surrounding vegetation in the Andean-Orinoco Piedmont are the main threats to diversity and ecological integrity of these ecosystems; however, information on this topic is of limited availability. In this region, we evaluated the value of 37 lentic wetlands as reservoirs of woody and aquatic plants and analyzed diversity and changes i...
Leptospira is an important re-emerging zoonotic human pathogen, disseminated by sick and carrier animals, water and soil. Weather calamities, such as flooding or cyclones favour the spreading of these bacteria. To check a potential role of natural water and soil in the persistence and spread of Leptospira on the territory of eastern Poland, 40 samples of natural water and 40 samples of soil wer...
the aim of this study was to investigate the rheological behavior and mucoadhesive nature of saliva substitutes, by incorporating various mucoadhesive polymers into an artificial saliva pump spray formulation. for this purpose various mucoadhesive polymers including cellulosic polymers in the range of 0.1-1.0% and carbomers such as c974p, c971, c934p and c971 in the range of 0.01-0.1% were adde...
Background and Objectives: HPAI has economic and public health importance. Aquatic and shore migratory birds are the main reservoirs and the cause of the spread of viruses across countries. The aim of study was risk assessment of the spread of the avian influenza H5 viruses. Methods: In this qualitative study, structured interviews and focus group discussions were used to assess the risk of...
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