نتایج جستجو برای: ftir spectroscopy

تعداد نتایج: 181847  

ژورنال: :مجله تازه های بیوتکنولوژی سلولی - مولکولی 0
مرجان انشاییه marjan enshaeieh , department of microbiology, falavarjan branch, islamic azad university, isfahan, iran، دانشگاه آزاد اسلامی، واحد فلاورجان، گروه میکروبیولوژی ، اصفهان، ایران آزاده عبدلی azadeh abdoli , department of microbiology, falavarjan branch, islamic azad university, isfahan, iran، دانشگاه آزاد اسلامی، واحد فلاورجان، گروه میکروبیولوژی ، اصفهان، ایران ، ایرج نحوی iraj nahvi department of biology, esfahan university, esfahan, iran، گروه زیست شناسی، دانشکده علوم، دانشگاه اصفهان محبوبه مدنی mahboobeh madani department of microbiology, falavarjan branch, islamic azad university, isfahan, iran.گروه زیست شناسی، دانشگاه آزاد اسلامی، واحد فلاورجان

سابقه و هدف: میکروارگانیسم هایی که قابلیت تجمع لیپید به میزان بیش از 20% بیومس خود را دارند، تحت عنوان میکروارگانیسم های مولد چربی نامیده می شوند. روغن های میکروبی شباهت زیادی با روغن های گیاهی دارند، اندک تفاوت بین آن ها غنی بودن روغن میکروبی از اسیدهای چرب غیر اشباع است. لیپیدهای سنتز شده توسط مخمرها قابلیت استفاده در صنایع دارویی جهت مقاصد تکنیکی و یا به عنوان مکمل غذایی را دارند. اهمیت تری ...

Journal: :علوم و تکنولوژی پلیمر 0
هادی سبحانی علی اکبر یوسفی محمد رضوی نوری

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2005
Renata Jovanović Marc A. Dubé

The utilization of Attenuated Total Reflectance – Fourier Transform Infrared (ATR-FTIR) spectroscopy for the characterization of pressure sensitive products is well established. Some recent advances in sensor technology have opened new application areas of ATR-FTIR spectrometry. One of them is monitoring of chemical reactions, which are of interest for pressure sensitive adhesive production. In...

2017
Min Wu Huan-Rong Hu Long Cui Zhi Xu

Background: The fast development of Fourier transform infrared (FTIR) spectroscopy has proposed a novel avenue for distinguishing cancerous tissue from normal one. The aim of this research is to investigate the possibility of employing FTIR spectroscopy with support vector machine (SVM) classification as a new spectral discriminant method for classifying metastatic and non-metastatic lymph node...

2012
Rezvan Zendehdel Ali Masoudi-Nejad Javad Mohammadzadeh Farshad H. Shirazi

Cisplatin is a common chemotherapeutic agent that used for treatment of many solid cancers. Rapid identification of chemotherapy resistance is very important and may lead to effective treatment plan. Spectroscopy techniques, such as infrared spectroscopy, which are sensitive to biochemical composition of samples, have shown potentials to discriminate tissues. Developing in Fourier transform inf...

Journal: :The British journal of surgery 2011
Y Liu Y Xu Y Liu Y Zhang D Wang D Xiu Z Xu X Zhou J Wu X Ling

BACKGROUND A previous study demonstrated that Fourier transform infrared (FTIR) spectroscopy can distinguish thyroid cancer from benign thyroid lesions. The aim of this study was to explore the use of FTIR for identifying metastatic lymph nodes of papillary thyroid cancer in vitro, and distinguishing between metastatic and non-metastatic tissue. METHODS Some 184 freshly removed cervical lymph...

2014
Heiko Wagner Anne Jungandreas Andrea Fanesi Christian Wilhelm

When microalgae are exposed to changing environmental conditions, e.g., light-dark cycles or oscillations in nutrient availability (CO2, nitrogen, phosphate or silicate) they respond with metabolic changes in the carbon allocation pattern. Short time regulations in the time range of few seconds to minutes can be mirrored best by mass spectroscopy based metabolomics. However, these snap shots do...

2014
Tom Grunert Avril Monahan Caroline Lassnig Claus Vogl Mathias Müller Monika Ehling-Schulz

Bacterial pathogens are known for their wide range of strategies to specifically adapt to host environments and infection sites. An in-depth understanding of these adaptation mechanisms is crucial for the development of effective therapeutics and new prevention measures. In this study, we assessed the suitability of Fourier Transform Infrared (FTIR) spectroscopy for monitoring metabolic adaptat...

Journal: :Toxicology 2015
Blessing E Obinaju Nigel J Fullwood Francis L Martin

Exposure to chemicals such as benzo[a]pyrene (B[a]P) can generate intracellular toxic mechanisms. Fourier-transform infrared (FTIR) spectroscopy is a novel approach that allows the non-destructive analysis of underlying chemical bond alterations in patho-physiological processes. This study set out to examine whether B[a]P-induced whole cell alterations could be distinguished from effects on nuc...

Journal: :Chemical communications 2014
Shanghao Li Sneha Potana Donnan J Keith Chengshan Wang Roger M Leblanc

Isotope-edited FTIR spectroscopy has been shown to be able to determine peptide's structure in the residue level in D2O, which is not a physiological solvent. Here, attenuated total reflection technique was utilized to successfully apply isotope-edited FTIR spectroscopy in H2O to determine the conformation of specific residues in a model peptide.

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