نتایج جستجو برای: دستگاه ft ir

تعداد نتایج: 108722  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2014
seyyed hamid ahmadi hassan tavakoli majid amirzadeh mohammad reza sangi

a new fourier transform-infra red (ft-ir) spectrometric method was developed for assaying hydrochlorothiazide (hct) and enalapril maleate (enm) in binary solid pharmaceutical formulations. multivariate partial least squares (pls) method was used for calibration of derivative spectral data. acetonitrile was used as solvent due to its spectral transparency and adequate solubility of analytes in i...

2016
S. Sumathi K. Viswanathan S. Ramesh

The FT-IR, FT-Raman and SERS Spectra of 1-Chloro 4-Flurobenzene (C6H4CLF) have been recorded in the range 4000-400cm -1 , the optimized geometry,frequency and intensity of the vibrtional bands of C6H4CLFhave been obtained by DFT levels of theory with complete relaxation in the 6-311**G basis sets. A complete vibrational assignment, aided by the theoretical frequency analysis, has been proposed....

ژورنال: :علوم و فناوری های پدافند نوین 0
بزرگمهر مداح bozorgmehr maddah imam hosssein university, faculty of science, departement of chemistryگروه شیمی-دانشگاه امام حسین

رزین دی کلرو آمین به عنوان یک عامل رفع آلوده کننده برای پدافند در مقابل عوامل شیمیایی، طی3 مرحله، و از رزین مبادله گر کاتیونی سنتز گردید. ساختار محصولات هر مرحله، بوسیله تکنیک ft-ir بررسی گردید و میزان کلر فعال محصول نهایی با تست یدومتری در حدود %11-7 تعیین گردید. کارایی این رزین دی کلرو آمین به عنوان رفع آلودگی کننده، بوسیله واکنش آن با 2-کلرواتیل فنیل سولفید (شبه عامل خردل) در دمای محیط توسط ...

2016
Sagar Dhakal Kuanglin Chao Walter Schmidt Jianwei Qin Moon Kim Diane Chan

Turmeric powder (Curcuma longa L.) is valued both for its medicinal properties and for its popular culinary use, such as being a component in curry powder. Due to its high demand in international trade, turmeric powder has been subject to economically driven, hazardous chemical adulteration. This study utilized Fourier Transform-Raman (FT-Raman) and Fourier Transform-Infra Red (FT-IR) spectrosc...

Journal: :Chang Gung medical journal 2006
Ying-Jen Chen Yih-Dih Cheng Hsin-Yi Liu Paul-Yann Lin Chia-Siu Wang

Fourier-transform infrared (FT-IR) microspectroscopic mapping can be used to distinguish between different tissue structures, and to increase the image contrast between normal and cancerous regions of a given tissue sample. This study demonstrates the biochemical changes associated with a consistent link between cancerous tissue and various molecular changes in the IR spectra of human pancreati...

Journal: :The Analyst 2008
Nicoletta Nicolaou Royston Goodacre

Microbiological safety plays a very significant part in the quality control of milk and dairy products worldwide. Current methods used in the detection and enumeration of spoilage bacteria in pasteurized milk in the dairy industry, although accurate and sensitive, are time-consuming. FT-IR spectroscopy is a metabolic fingerprinting technique that can potentially be used to deliver results with ...

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