نتایج جستجو برای: ft ir analysis

تعداد نتایج: 2884900  

Journal: :Journal of Colloid and Interface Science 1995

2012
Xiang Li Qing-Bo Li Guang-Jun Zhang Yi-Zhuang Xu Xue-Jun Sun Jing-Sen Shi Yuan-Fu Zhang Jin-Guang Wu

Cancer is a disease that does great harms to the health of human beings. FT-IR spectroscopy could identify variability at the molecular level in biological specimens. It is a rapid and noninvasive method, which could be used intraoperatively to modify surgical procedures. The aim of this paper is to identify and separate cancer from colitis in endoscopic colon biopsies through the use of FT-IR ...

2002
John Scullion Geoff N. Elliott Wei E. Huang Roy Goodacre Hilary Worgan Robert Darby Mark J. Bailey Dylan Gwynn-Jones Gareth W. Griffith Michael K. Winson Peter A. Williams Christopher Clegg John Draper

This study aimed to evaluate metabolic fingerprinting by Fourier transform infrared (FT-IR) spectroscopy as a technique for investigating microbial communities and their activities in soil. FT-IR spectra from earthworm casts, and other ‘biosamples’, were compared using multivariate cluster analyses. The work formed part of a wider study to quantify the risk of horizontal gene flow and to assess...

2016
Ismail Warad Yasmin Al-Demeri Mohammmed Al-Nuri Mohammed Suleiman Anas Al-Ali Sameer Amereih

N-[(1E)-(3-Bromophenyl)methylene]-N-(2-piperidin-1-ylethyl)amine Schiff base was prepared in good yield and characterized by the reflux of equivalent amounts of 2-(piperidin-1-yl)ethanamine with 3-bromobenzaldehyde. The structure of the desired Schiff base was analyzed based on: elemental analysis, EI-MS, TG/DTG, UV-visible, FT-IR, 1H and 13C-NMR spectral analysis. The condensation reaction was...

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...

2015
Thomas Driver Amit K. Bajhaiya J. William Allwood Royston Goodacre Jon K. Pittman Andrew P. Dean

Fourier Transform Infrared (FT-IR) spectroscopy is a robust method for macromolecular analysis and differentiation of microorganisms. However, most studies are performed in controlled conditions and it is unclear whether this tool is appropriate for the identification of eukaryotic microalgae species from variable environments. In order to address this, nine closely-related species of marine an...

Journal: :iranian journal of biotechnology 2014
sahar seyed hassan tehrani somayeh hashemi sheikh shabani sattar tahmasebi enferadi zohreh rabiei

background: ß-carbolines, harmaline and harmine, are the major alkaloids presenting in the seeds of the peganum harmala l. these alkaloids are known as herbal active principals with potential use in pharmaceutical and medicine. objectives: to assess the growth inhibitory effect of phyto-alkaloids, harmaline and harmine, on cancer cell lines. methods: the p. harmala l.’s alkaloids were extracted...

Journal: :journal of medicinal plants and by-products 0

parthenolide is major sesquiterpene lactones present in anthemis haussknechtii boiss. & reut. (feverfew). this compound has many effects on different disease such as migrain and cancer. parthenolide was reported from tanacetum parthenium (l.) sch.bip. but other plants of asteraceae family could contain parthenolide. in this study parthenolide was extracted and identified with two methods, fouri...

ژورنال: :مجله دانشگاه علوم پزشکی اراک 0
شهرزاد هادی چگنی shahrzad hadichegeni department of biophysics, islamic azad university, science and research branch, tehran, iranگروه بیوفیزیک، دانشگاه آزاد اسلامی، واحد علوم تحقیقات تهران ، تهران، ایران بهرام گلیایی bahram goliaei department of biophysics, institute of biochemistry and biophysics (ibb), tehran university, tehran, iranگروه بیوفیزیک، مرکز بیوفیزیک و بیوشیمی، دانشگاه تهران، تهران، ایرانسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) مهرداد هاشمی mehrdad hsahemi department of medical genetics, medical sciences university, central tehran branch, tehran, iranگروه ژنتیک پزشکی، دانشگاه علوم پزشکی واحدتهران مرکز، تهران، ایرانسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch)

زمینه و هدف: آلبومین سرم انسانی (hsa) یک پروتئین محلول در خون است که می تواند به مولکول های کوچک (نظیر سم ها و داروها) متصل شده و آن ها را به جریان گردش خون منتقل کند. مواد و روش ها: طیف سنجی فرابنفش – مرئی برای مشخص کردن ویژگی های پیوند آلبومین سرم انسانی با دیازینون (سم ارگانوفسفره) و روش طیف سنجی تبدیل فوریه مادون قرمز (ft-ir) برای بررسی تغییرات ساختار دوم پروتئین در سطح مولکولی و تحت شرایط ...

2014
Yong-Kook Kwon Myung Suk Ahn Jong Suk Park Jang Ryol Liu Dong Su In Byung Whan Min Suk Weon Kim

To determine whether Fourier transform (FT)-IR spectral analysis combined with multivariate analysis of whole-cell extracts from ginseng leaves can be applied as a high-throughput discrimination system of cultivation ages and cultivars, a total of total 480 leaf samples belonging to 12 categories corresponding to four different cultivars (Yunpung, Kumpung, Chunpung, and an open-pollinated varie...

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