Modified resole resin/short silica fiber composite materials have been prepared.
The resole resin was synthesized and then blended with Polyvinylbutyral (PVB)
polymer with different weight ratios to reduce its brittleness. The mechanical,
thermal
and physical properties of Resol- PVB blends were studied to
characterize these blends and select the most appropriate mixing ratio of
polyvinyl butyral with resole resin, which was identified at 15 phr of polyvinyl
butyral for every 100 parts of resole resin.
Composite materials
ألیاف السیلیكا القصیرة
راتنج الریزول المعدل
مواد مركبة
مواد شفافة راداریاً
اختبارات فیزیائیة و میكانیكیة و كھربائیة
اختبارت حراریة و اختبارات اللفح الحراري
محلل الشبكة الشعاعي
Short silica fiber
modified resole resin
radio transparent material
physical mechanical and electrical tests
thermal and ablation test
vector network analyzer
S – Parameters
المزيد..
Surgical ablation of atrial fibrillation (AF) has been gaining ground as the
preferred method of treatment of this potentially lethal arrhythmia
affecting 1/3-1/2 of patients with mitral valve diseases.
It is specially suited for patients undergoi
ng an operative procedure.
Between Dec 12,2002 and Dec 29,2003 ,fifty five operative patients with
chronic AF were subjected to AF ablation with microwave energy at
Damascus University Cardiovascular Surgical Center .
Thirty five patients were female; age ranged between 20 and 72 years.
All of them had chronic AF.
