نتایج جستجو برای: dent polymers

تعداد نتایج: 73456  

Journal: :IOP Conference Series: Materials Science and Engineering 2021

Journal: :international journal of nano dimension 0
z. abbasi young researchers and elite club, ilam branch, islamic azad university, ilam, iran. e. rezaee nezhad department of chemistry, payame noor university, po box 19395-4697 tehran, iran. v. moradi young researchers and elite club, ilam branch, islamic azad university, ilam, iran. f. moradi young researchers and elite club, ilam branch, islamic azad university, ilam, iran. o. ahmadi young researchers and elite club, ilam branch, islamic azad university, ilam, iran. a. homafar department of chemistry, eyvan-e-gharb branch, islamic azad university, eyvan, iran.

the aims of the study were to investigate the effect of poly(ε -caprolactone) (pcl) and nano- sio2 within the thermoplastic starch (tps) blends on the rate and extent of starch enzymatic hydrolysis using enzymes α-amylase and amyloglucosidase. the results of this study have revealed that blends with nano-sio2 content at 6 wt% exhibited a significantly reduced rate and extent of starch hydrolysi...

Journal: :Acta Crystallographica Section A 1978

Journal: :Journal of Solid Mechanics and Materials Engineering 2008

ژورنال: :journal of dental school, shahid beheshti university of medical sciences 0
الهه وحیددستجردی e. vahid dastjerdi dental school, shahid beheshti university of medical sciences, tehran-iran.دانشکده دندانپزشکی، دانشگاه علوم پزشکی شهید بهشتی. سعیده صدر s. sadr dental school, kerman university of medical sciences, kerman-iran.دانشکده دندانپزشکی، دانشگاه علوم پزشکی کرمان. محمدرضا بدیعی mr. badiee dental school, shahid beheshti university of medical sciences, tehran-iran.دانشکده دندانپزشکی، دانشگاه علوم پزشکی شهید بهشتی.

سابقه و هدف: جهت سمان کردن بندهای ارتودنسی از سمان های مختلفی استفاده می شود. درمورد این سمان ها حساسیت حین مراحل سخت شدن، حلالیت و تجزیه سمان بعد از مرحله سخت شدن مطرح می باشد. هر یک از این موارد باعث از دست دادن اتصال بین بند و دندان، افزایش احتمال پوسیدگی و دکلسیفیکاسیون می شود. هدف ازاین مطالعه بررسی میزان تغییرات وزنی سمان های گلاس آینومر مختلف مورد استفاده در ارتودنسی بود. مواد و روشها: ا...

2004
Ahmet Duyar Ten-Huei Guo

System identification techniques are used to represent the dynamic behavior of the space shuttle main engine. The transfer function matrices of the linearized models of both the closed loop and the open loop system are obtained by using the recursive maximum likelihood method.

2008
Girish V. Seshagiri

D uring development, how can you determine with confi dence whether your system will exceed its allowable downtime when delivered? When customers change their minds about functionality, how can you be confi dent that you’ve made the right trade­offs to deliver the system within your original fi xed budget? During the early weeks of a sprint, how can you be confi dent that you can deliver all th...

2000

For the first tzme since benefits under the Social Security Act were lestablished in 1965 for certain young persons aged 1841, the role of these benefits in relation to family resources ad to scholarship and loan assistance ~8 bezng studied. These monthly child’s benefits are pnyable to young men and young women-the children of disabled, retired, and deceased workers-who are unmarried and attmd...

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