نتایج جستجو برای: phosphoric acid under the trademark orgacid 0

تعداد نتایج: 16473418  

Journal: :journal of dentistry, tehran university of medical sciences 0
ms. ahmad akhoundi associate professor, dental research center, tehran university of medical sciences, tehran, iran m. rahmati kamel orthodontist, private practice t. hooshmand assistant professor, department of dental materials, school of dentistry, tehran university of medic i. harririan associate professor, department of pharmaceutics, school of pharmacy, tehran university of medical s mj. kharazi fard statistical consultant, dental research center, tehran university of medical sciences, tehran, iran h. noroozi assistant professor, dental research center, tehran university of medical sciences, tehran, iran

objective:   the aim of this study was to evaluate the bond strength between metal brackets and non-glazed ceramic with three different surface treatment methods. materials and methods: forty-two non-glazed ceramic disks were assigned into three groups. group i and ii specimens were etched with 9.5% hydrofluoric acid. subsequently in group i, silane and adhesive were applied and in group ii, bo...

Journal: :Journal of the American Chemical Society 1899

2014
P. Selvarajan

Phosphoric acid added L-alanine (PLA) single crystals were grown successfully by slow evaporation technique at room temperature by taking 2:1 molar ratio of L-alanine and phosphoric acid. Solubility and nucleation kinetic measurements were carried out for the PLA sample. Critical nucleation parameters have been calculated. Structural analysis reveals that PLA crystal crystallizes in orthorhombi...

Journal: :Journal of Industrial & Engineering Chemistry 1909

Journal: :Journal of Biological Chemistry 1934

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1392

to teach english adequately, qualified teachers are needed. unfortunately, there are still teachers who are teaching english without an academic degree in tefl. it is necessary for teachers to have a major in english to have subject knowledge, but it is not sufficient. teachers need to have an understanding of the social, cultural, moral, ethical, and pedagogical issues of education and practic...

Journal: :Journal of Biological Chemistry 1934

2014
Indra Prakash Venkata Sai Prakash Chaturvedula Avetik Markosyan

Degradation of rebaudioside M, a minor sweet component of Stevia rebaudiana Bertoni, under conditions that simulated extreme pH and temperature conditions has been studied. Thus, rebaudioside M was treated with 0.1 M phosphoric acid solution (pH 2.0) and 80 °C temperature for 24 h. Experimental results indicated that rebaudioside M under low pH and higher temperature yielded three minor degrada...

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