نتایج جستجو برای: natural solid
تعداد نتایج: 662791 فیلتر نتایج به سال:
The application of the Natural Element Method (NEM) 2 to boundary value problems in two-dimensional small displacement elastostatics is presented. The discrete model of the domain consists of a set of distinct nodes N , and a polygonal description of the boundary @ . In the Natural Element Method, the trial and test functions are constructed using natural neighbour interpolants. These interpola...
determination of uranium in natural water and complex solutions using ion exchange chromatography: a combined procedure using ion exchange chromatography and uv-vis spectrophotometry techniques has been developed to measure uranum in natural water and complex solutions. after conditicing , one hundred milli liters of sample solutions have been passed through an ion exchange column,pachked with ...
Background and Objectives: A significant problem that mankind has faced in recent years with its production and indiscriminate disposal of solid waste in the environment. This applies regardless of the issue of recycling and reuses of recycled materials, in addition to the national capital loss the loss of natural resources and environmental damage is irreparable. In this study, the current s...
Kaolin-SO3H as a new solid acid is prepared via reaction of kaolin and chlorosulfonic acid. This natural based catalyst is very inexpensive and easy available. Imidazoles are an important class of heterocycles being the core fragment of different natural products and biological systems such as anti-allergic, anti-inflammatory, analgesic, antifungal, antimycotic, antibiotic, antiulcerative, anti...
Kaolin-SO3H as a new solid acid is prepared via reaction of kaolin and chlorosulfonic acid. This natural based catalyst is very inexpensive and easy available. Imidazoles are an important class of heterocycles being the core fragment of different natural products and biological systems such as anti-allergic, anti-inflammatory, analgesic, antifungal, antimycotic, antibiotic, antiulcerative, anti...
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