نتایج جستجو برای: Fluorescence spectroscopy

تعداد نتایج: 268437  

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده مهندسی شیمی 1393

در این پژوهش نحوه ساخت نانوکامپوزییت eva/ag و اثر ضد میکروبی آن در درصدهای مختلف نانو ذره نقره مورد بررسی قرار گرفته است.نانوکامپوزیت حاصل از نطر شکل شناختی ، اندازه ذرات، ساختمان شیمیایی ، با استفاده از تستهای sem(scanning electrou microscopy)،tem (transmission electron microscope) ، xrd (x-ray fluorescence spectroscopy) ،ftir (fourier transform infrared spectroscopy) مورد ارزیابی قرار گرفت. د...

Journal: :iranian journal of basic medical sciences 0
hossein zarei jaliani department of biochemistry, institute of biochemistry and biophysics (ibb), tehran university, tehran, iran gholam hossein riazi department of biochemistry, institute of biochemistry and biophysics (ibb), tehran university, tehran, iran seyyed mahmoud ghaffari department of biochemistry, institute of biochemistry and biophysics (ibb), tehran university, tehran, iran oveis karima department of biochemistry, institute of biochemistry and biophysics (ibb), tehran university, tehran, iran abbas rahmani school of biology, university college of sciences, university of tehran, tehran, iran

objective(s): crocin, as the main carotenoid of saffron, has shown anti-tumor activity both in vitro and in vivo. crocin might interact with cellular proteins and modulate their functions, but the exact target of this carotenoid and the other compounds of the saffron have not been discovered yet. microtubular proteins, as one of the most important proteins inside the cells, have several functio...

Journal: :organic chemistry research 2015
hossein eshghi mohammad rahimizadeh nazanin noroozi-shad hossein sabet-sarvestania

a novel podand based anion receptor bearing benzimidazole motifs as recognition sites was designed and synthesized by reaction of 1,7-bis(2'-methylbenzoate)-1,4,7-trioxaheptane and phenylenediamine. the binding properties of anionic guest with this receptor were studied using uv-vis and fluorescence spectroscopy. these studies revealed that this receptor exhibit selective recognition towards f- ...

Journal: :journal of biotechnology and health sciences 0
fatemeh nemati nikoo department of nanotechnology, pharmacuitical sciences branch, islamic azad university, tehran, ir iran koorosh goodarzvand chegini department of biochemistry and genetic, school of medicine, qazvin university of medical sciences, qazvin, ir iran reza najafi pour department of biochemistry and genetic, school of medicine, qazvin university of medical sciences, qazvin, ir iran nematollah gheibi cellular and molecular research center, qazvin university of medical sciences, qazvin, ir iran; cellular and molecular research center, qazvin university of medical sciences, qazvin, ir iran. tel: +98-2813338034

conclusions the expression of recombinant calprotectin, as an effective protein, can help in diagnosis or treatment of inflammatory and cancer processes in the future. furthermore, ca2+ induced a partial change in secondary and tertiary structure of calprotectin subunits and this change is probably necessary for protein dimerization. results interaction of s100a8 and s100a9 in the presence of c...

Journal: :iranian red crescent medical journal 0
pooneh amini-geram department of biology, science and research branch, islamic azad university, tehran, ir iran fatemeh goshadrou physiology department, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran, ir iran; physiology department, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran, ir iran azadeh ebrahim-habibi biosensor research center, endocrinology and metabolism molecular-cellular sciences institute, tehran university of medical sciences, tehran, ir iran; endocrinology and metabolism research center, endocrinology and metabolism clinical sciences institute, tehran university of medical sciences, tehran, ir iran parichehreh yaghmaei department of biology, science and research branch, islamic azad university, tehran, ir iran saeed hesami-tackallou department of biology, garmsar branch, islamic azad university, garmsar, ir iran

background glucose is an essential element in the supply of body’s energy. in diseases such as diabetes, glucose increase is associated with disturbance in metabolism. cortisol is an important hormone in the regulation of glucose metabolism, and human serum albumin (hsa) is one of the most important glucose and cortisol transmitters in blood. interaction between albumin and these ligands could ...

Journal: :journal of chemical health risks 0
f. s. goldouzian department of biology, mashhad branch, islamic azad university, mashhad, iran z. s. goldouzian department of biology, mashhad branch, islamic azad university, mashhad, iran m. momen heravi department of chemistry, mashhad branch, islamic azad university, mashhad, iran j. khanchamani department of biology, mashhad branch, islamic azad university, mashhad, iran

mechanism of the binding of lomefloxacin (lmf) with human serum albumin has been studied at physiological ph (7.4) using fluorescence spectroscopic technique. lmf is a third-generation fluoroquinolone antibiotic that exhibits striking potency against a broad spectrum of gram-negative and gram-positive bacteria through inhibition of dna gyrase. lomefloxacin is a drug that is excreted in urine an...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

we have two part in this thesis, at first: the interaction of native calf thymus dna (ct-dna) with two anthraquinones including quinizarin (1,4- dihydroxy anthraquinone) and danthron (1,8- dihydroxy anthraquinone) in a mixture of 0.04 m brittone-robinson buffer and 50% of ethanol were studied at physiological ph by uv-vis absorption, florescence, circular dichroism spectroscopic methods, viscos...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده علوم طبیعی 1391

in recent years many researchers have been focused on interaction of small molecules with dna. dna is generally the primary intracellular of anticancer drugs, so the interaction between small molecules and dna can cause dna damage in cancer cells, blocking the division of cancer cells and resulting in cell death. the flavonoids are a large group of polyphenolic natural products that are widely ...

Journal: :international journal of nanoscience and nanotechnology 2015
m. najafi h. haratizadeh

europium (eu) doped zno microsphere based nano-sheets were synthesized through hydrothermal method. effects of different concentrations of europium on structural and optical properties of zno nano-sheets were investigated in detail. prepared un-doped and eu-doped zno samples were characterized using x-ray diffraction (xrd), energy dispersive x-ray spectroscopy (edx), scanning electron microscop...

Journal: :Wiley Interdisciplinary Reviews: Systems Biology and Medicine 2009

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