منابع مشابه
The Conversion Kinetics of Tincal to Boric Acid in Nitric Acid Solutions
Pure borax and various boron compounds are produced from the solutions in which tincal is dissolved with various reagents. Economically important boron compounds such as boric acid, borax, boric oxide, and refined hydrated sodium borates and perborates are produced from boron-containing ores. The production of boric acid by using nitric acid from tincal is more advantageous because it evalu...
متن کاملMIPAS Stratospheric Nitric Acid
D. Y. Wang, M. Höpfner, G. Mengistu Tsidu, G. P. Stiller, T. von Clarmann, H. Fischer, T. Blumenstock , N. Glatthor, U. Grabowski, F. Hase, S. Kellmann, A. Linden, M. Milz, H. Oelhaf, M. Schneider, T. Steck, G. Wetzel, M. López-Puertas, B. Funke, M. E. Koukouli, H. Nakajima, T. Sugita, H. Irie, J. Urban, D. Murtagh, M. L. Santee, G. Toon, M. R. Gunson, F. W. Irion, C. D. Boone, K. Walker, and P...
متن کاملMIPAS Operational Nitric Acid
D. Y. Wang, M. Höpfner, C. E. Blom, W. E. Ward, H. Fischer, T. Blumenstock, F. Hase, C. Keim, G. Y. Liu, S. Mikuteit, H. Oelhaf, G. Wetzel, U. Cortesi, F. Mencaraglia, G. Bianchini, G. Redaelli, M. Pirre, V. Catoire, N. Huret, C. Vigouroux, M. De Mazière, E. Mahieu, P. Demoulin, S. Wood, D. Smale, N. Jones, H. Nakajima, T. Sugita, J. Urban, D. Murtagh, C. D. Boone, P. F. Bernath, K. A. Walker, ...
متن کاملextremal region detection guided by maxima of gradient magnitude
a problem of computer vision applications is to detect regions of interest under dif- ferent imaging conditions. the state-of-the-art maximally stable extremal regions (mser) detects affine covariant regions by applying all possible thresholds on the input image, and through three main steps including: 1) making a component tree of extremal regions’ evolution (enumeration), 2) obtaining region ...
KINETIC DETERMINATION OF ASCORBIC ACID a WITH SPECTROPHOTOMETRIC DETECTION
A simple and rapid method has been developed for the determination of ascorbic acid in fruit and pharmaceutical products. The method is based on the measurement of the reaction rate between ammonium molybdate and ascorbic acid in acidic media. The reaction was monitored spectrophotometrically at 800 nm by fixed-time and variable-time methods. The calibration graph was linear in the range of...
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ژورنال
عنوان ژورنال: The Lancet
سال: 1830
ISSN: 0140-6736
DOI: 10.1016/s0140-6736(02)96082-4