نتایج جستجو برای: Differential scanning Calorimetry(DSC)

تعداد نتایج: 434473  

1999
Sandro Donnini Mancini Maria Zanin

Bottle grade virgin PET (polyethylene terephthalate) resin was investigated through five consecutive injection molding steps to simulate recycling cycles. Tests were carried out after each recycling to evaluate degradation, crystallinity (by density and Differential Scanning CalorimetryDSC measurements), hardness, and tensile and flexural properties. Consecutive recycling resulted in cumulative...

Journal: :jundishapur journal of natural pharmaceutical products 0
eskandar moghimipour nanotechnology research center, jundishapur university of medical sciences, ahvaz, ir iran; department of pharmaceutics, faculty of pharmacy, jundishapur university of medical sciences, ahvaz, ir iran anayatollah salimi nanotechnology research center, jundishapur university of medical sciences, ahvaz, ir iran; department of pharmaceutics, faculty of pharmacy, jundishapur university of medical sciences, ahvaz, ir iran; nanotechnology research center, jundishapur university of medical sciences, ahvaz, ir iran. department of pharmaceutics, faculty of pharmacy, jundishapur university of medical sciences, ahvaz, ir iran. tel: +98-6113738381 masoud karami department of pharmaceutics, faculty of pharmacy, jundishapur university of medical sciences, ahvaz, ir iran sara isazadeh department of pharmaceutics, faculty of pharmacy, jundishapur university of medical sciences, ahvaz, ir iran

results the results showed that the maximum oil was incorporated in microemulsion system that contained surfactant to cosurfactant ratio of 4:1. the mean droplet size range of microemulsion formulation was in the range of 5.09 to 159 nm, and its refractory index (ri) and ph were 1.44 and 7, respectively. viscosity range was 57-226 cps. drug release profile showed that 48.18% of the drug release...

Journal: :iranian journal of basic medical sciences 0
soliman mohammadi-samani department of pharmaceutics, school of pharmacy, shiraz university of medical sciences, shiraz, iran center for nanotechnology in drug delivery, shiraz university of medical sciences, shiraz, iran gholamhossein yousefi department of pharmaceutics, school of pharmacy, shiraz university of medical sciences, shiraz, iran center for nanotechnology in drug delivery, shiraz university of medical sciences, shiraz, iran farhad mohammadi department of pharmaceutics, school of pharmacy, shiraz university of medical sciences, shiraz, iran fatemeh ahmadi department of pharmaceutics, school of pharmacy, shiraz university of medical sciences, shiraz, iran center for nanotechnology in drug delivery, shiraz university of medical sciences, shiraz, iran

objective(s):drug delivery through the skin can transfer therapeutic levels of drugs for pharmacological effects. analgesics such as nsaids have gastrointestinal side effects and topical dosage forms of these drugs are mainly preferred, especially for local pains. meloxicam is one of nsaids with no topical form in the market. in this research, we attempted to quantify the skin permeation of a m...

Journal: :international journal of nano dimension 0
s. hedayati chemistry department, islamic azad university-ardabil branch, ardabil, iran. a. hassanzadeh chemistry department, urmia university, urmia, iran. b. shaabani chemistry department, tabriz ,university, tabriz, iran. m. alem chemistry department, islamic azad university-ardabil branch, ardabil, iran. e. hobbolahi chemistry department, islamic azad university-ardabil branch, ardabil, iran.

one of the best and the most active ways for surveying thermal behaviour of materials is using differential scanning calorimetry. in this paper, the authors have studied thermal behaviour for schiff base ligand and their synthesized cobalt, nickel complexes. in this method, the sample is opposed to a controlled temperature change and its physical properties. here we studied melting point and tg...

Journal: :iranian endodontic journal 0
mohsen aminsobhani mohamad saleh khalatbari naghmeh meraji abdollah ghorbanzadeh ehsan sadri

introduction: the aim of this study was to compare several metallurgic properties of neoniti instrument with four other commonly used endodontic rotary files. methods and materials: neoniti a1 (25/0.08), race (25/0.06), mtwo (25/0.06), twisted file (25/0.06) and protaper next x2 (25/0.06) were examined by differential scanning calorimetry (dsc) before and after heat treatment at 500 ° c. x-ray ...

Journal: :journal of agricultural science and technology 2014
a. sankhon i. amadou w. yao h. wang h. qian

parkia biglobosa starch was subjected to different heat-moisture treatment (hmt) at different moisture contents (15, 20, 25, and 30%) at 110oc for 16 hours. the content of resistant starch (rs) was the lowest (33.38%) in the untreated native parkia and increased in the samples with hmt-15 (37.79%), hmt-30 (39.64%), hmt-25 (46.63%), and hmt-20 (50.14%), showing significant increase (p < 0.05) in...

2001
Alan Cooper S. E. Harding

Differential scanning calorimetry (DSC) is an experimental technique to measure the heat energy uptake that takes place in a sample during controlled increase (or decrease) in temperature. At the simplest level it may be used to determine thermal transition (“melting”) temperatures for samples in solution, solid, or mixed phases (e.g. suspensions). But with more sensitive apparatus and more car...

Journal: :iranian journal of pharmaceutical research 0
e süleymano?lu

thermodynamic features related to preparation and use of self-assemblies formed between multilamellar and unilamellar zwitterionic liposomes and polynucleotides with various conformation and sizes are presented. the divalent metal cation or surfactant-induced adsorption, aggregation and adhesion between single- and double-stranded polyribonucleotides and phosphatidylcholine vesicles was followe...

ژورنال: :مجله دانشگاه علوم پزشکی مازندران 0
مجید سعیدی majid saeedi department of pharmaceutics, pharmaceutical sciences research center, faculty of pharmacy, mazandaran university of medical sciences, sari, iranساری: کیلومتر 18 جاده خزر آباد، مجتمع دانشگاهی پیامبر اعظم، دانشکده داروسازی کتایون مرتضی سمنانی katayoun morteza-semnani department of medicinal chemistry, faculty of pharmacy, mazandaran university of medical sciences, sari, iranگروه شیمی دارویی، دانشکده داروسازی، دانشگاه علوم پزشکی مازندران آلا سلیمانی ala soleymani pharm d, faculty of pharmacy, mazandaran university of medical sciences, sari, iranدکتر داروساز، دانشکده داروسازی، کمیته تحقیقات دانشجویی، دانشگاه علوم پزشکی مازندران محمد زاهدی mohammad zahedi pharmacy students, student research committee, mazandaran university of medical sciences, sari, iranدانشجوی داروسازی، کمیته تحقیقات دانشجویی، دانشگاه علوم پزشکی مازندران

چکیده سابقه و هدف: پتانسیل روش مایع به جامد (liquisolid comppcrs) جهت افزایش ویژگی های انحلال داروهای نامحلول در آب، در سال های اخیر مورد بررسی و به اثبات رسیده است. به تازگی استفاده از این روش در کنترل سرعت آزادسازی نیز مورد بررسی قرار گرفته است. در این مطالعه تأثیر پلیمرهای اودراجیت (eudragit) و hpmc (hydroxy prapyl methyl cellulose) بر کنترل رهش تئوفیلین (theophylline) از فرمولاسیون های مختل...

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