بررسی فرمولاسیون الیاف e-glass و ecr-glass جهت استفاده در لوله های فاضلاب

WEBSIGN: A Looking Glass for e-Services

Desktop browsers are excellent for browsing web sites but they keep users tethered. Wireless browsing technologies such as WAP and i-mode untether nomadic users by making these services available on the move. However, it is not clear if users will be satisfied with free form browsing offered by these wireless technologies. We believe that in addition to free form web browsing, nomadic users wil...

سیمان های گلاس اینومر Glass-Ionomer cement

Normal 0 false false false EN-US X-NONE AR-SA Class-Ionomer cements include calcium aluminosilicate glass and fluid component of acrylic acid.  An important property of these cements is chemical adhesion to enamel and dentin and releasing anti-caries fluride. Clinical use of these cements involves filling erosions without cavity preparation, preven...

ECR 2014, Part E

PREPARATION OF Fe/GLASS COMPOSITE BY REDUCTION OF Na2O– Fe2O3–B2O3–SiO2–ZnO GLASS AND GLASS CERAMICS

In the present study, the feasibility of α-Fe ferromagnetic phase formation in glass and glass-ceramic by reduction in hydrogen atmosphere have been investigated. The glass with the composition of 35Na 2 O–24Fe2O3–20B 2O3 – 20SiO 2 –1ZnO (mol %) was melted and quenched by using a twin roller technique. As quenched glass flakes were heat treated in the range of 400-675 °C for 1-2 h in h...

Resistance to Stress Corrosion Cracking of Unidirectional Glass/Polymer Composites Based on Low and High Seed ECR- glass Fibers for High Voltage Composite Insulator Applications

Stress corrosion experiments were performed on unidirectional ECR-glass/polymer composites with the modified polyester, epoxy and vinyl ester resins for the use in high voltage composite insulator applications. Two types of ECR-glass fibers with low and high seed counts were investigated. The stress corrosion tests were performed in nitric acid under four point bending conditions and the resist...

Glass action

Geological Survey report stated that unless greenhouse gas emissions were curbed significantly, two third's of the world's polar bears, including all those in Alaska, would disappear by the middle of the century. " It's hard to say that a new car factory in Detroit will be stopped because of its potential impact on the ice edge, but the endangered species hasn't been full tested, " says Margare...