نتایج جستجو برای: pcl

تعداد نتایج: 3882  

در این مقاله، تاثیر آمیختن و افزودن مقادیر اندک از نانوذرات شیشه زیست فعال در رفتار مکانیکی دینامیکی آمیخته های PDLLA/PCL بررسی شده اند. مدول ذخیره PDLLA خالص با افزایش فاز الاستومر PCL تا 30% وزنی از GPa 73/1 به حدود GPa 77/0 کاهش یافته و در مقابل مدول ذخیره آمیخته PDLLA/PCL با افزودن فاز پرکننده شیشه تا 6% وزنی از GPa 062/1 به حدود GPa 66/1 افزایش یافته است. همچنین بیشینه پیک tan δ در محدوده ...

2004
A. N. Misra M. R. A. Hussain N. J. Fiddian G. Newton

©2003 British Editorial Society of Bone and Joint Surgery doi.10.1302/0301-620X.85B3.13182 $2.00 e randomised 129 knees which were to be replaced using a standard posterior-cruciate-ligament (PCL)-retaining cemented total knee replacement into two groups. In one the PCL was retained in the normal way and in the other it was resected. They were well matched, with a predominance of women, and a m...

Journal: :The Journal of biological chemistry 1987
T W Gettys P F Blackmore J B Redmon S J Beebe J D Corbin

A recent study showed that cAMP analogs lowered cAMP levels in rat hepatocytes (Corbin, J.D., Beebe, S.J., and Blackmore, P.F. (1985) J. Biol. Chem. 260, 8731-8735). The present work demonstrates that cAMP analogs also lowered cAMP in a rapid, concentration-dependent manner in heart and fat cells. In order to determine if the cAMP-dependent protein kinase mediated this effect, techniques were d...

ژورنال: :مواد پرانرژی 0
یداله بیات yadollah bayat تهران-لویزان اکرم سادات رزاقی akramsadat razzaghi تهران-لویزان مصطفی قربانی mostafa ghorbani تهران-لویزان علی قدیری ali ghadiri تهران-لویزان مهوش مصاحبی حسین دهقانی

بایندر در سوخت های مرکب نقش بسیار مهمی در تعیین خواص فیزیکی و ترمو شیمیایی سوخت دارد. بنابراین لازم است تا این جزء به طور مناسب انتخاب گردد. بایندر مناسب توانایی حمل فیلر بالا ، خواص مکانیکی و فرآیند پذیری مطلوب را داراست. ساختار پلی کاپرولاکتون به دلیل دارا بودن گروه های قطبی، توانایی بیشتری در پذیرش نرم کننده های استر های نیتراته دارد و از این نظر بایندر بسیار مطلوبی است. پلی گلیسیدیل نیترات ...

Journal: :Frontiers in Materials 2021

Polycarbonate (PCL) has been widely used in tissue engineering, but its hydrophobicity and low biological activity limit further promotion application. By adding nanoparticles, the hydrophilicity of PCL can be improved. In this study, different amounts Ta (1–10%wt) were added to PCL, then their mechanical properties studied vitro . XRD found that 5%Ta-PCL highest crystallinity. At same time, ce...

Journal: :Blood 1999
R García-Sanz A Orfão M González M D Tabernero J Bladé M J Moro J Fernández-Calvo M A Sanz J A Pérez-Simón A Rasillo J F Miguel

We report on a series of 26 patients diagnosed with primary (de novo) plasma cell (PC) leukemia (PCL) in whom we analyzed the clinicobiologic characteristics of the disease together with the immunophenotype, DNA cell content, proliferative index, and numeric chromosomal aberrations of the neoplastic PC, and compared them with 664 multiple myeloma (MM) patients at diagnosis. The median age, sex ...

2017
Angélique D. Ducray Andrea Felser Jana Zielinski Aniela Bittner Julia V. Bürgi Jean-Marc Nuoffer Martin Frenz Meike Mevissen

BACKGROUND Nanomedicine offers a promising tool for therapies of brain diseases, but potential effects on neuronal health and neuronal differentiation need to be investigated to assess potential risks. The aim of this study was to investigate effects of silica-indocyanine green/poly (ε-caprolactone) nanoparticles (PCL-NPs) engineered for laser tissue soldering in the brain before and during dif...

2005
Gianluca Ciardelli Valeria Chiono Giovanni Vozzi Mariano Pracella Arti Ahluwalia Niccoletta Barbani Caterina Cristallini Paolo Giusti

Bioartificial blends of poly-( -caprolactone) (PCL) with a polysaccharide (starch, S; dextran, D; or gellan, G) (PCL/S, PCL/D, PCL/G 90.9/9.1 wt ratio) were prepared by a solution-precipitation technique and widely characterized by differential scanning calorimetry analysis (DSC), Fourier transform infrared-attenuated total reflectance spectroscopy (FTIR-ATR), optical microscopy (OM), wide-angl...

2016
Tomasz Gredes Franziska Kunath Tomasz Gedrange Christiane Kunert-Keil

The aim of this study was to examine the osteogenic potential of new flax covering materials. Bone defects were created on the skull of forty rats. Materials of pure PLA and PCL and their composites with flax fibers, genetically modified producing PHB (PLA-transgen, PCL-transgen) and unmodified (PLA-wt, PCL-wt), were inserted. The skulls were harvested after four weeks and subjected to histolog...

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