scholarly journals Optimization of welding heat regimes for glass shell construction

2018 ◽  
Vol 5 (1) ◽  
pp. 16-20
Author(s):  
O. Hachkevych ◽  
◽  
E. Irza ◽  
A. Torskyy ◽  
A. Koziarska ◽  
...  
Keyword(s):  
Author(s):  
Ibrahim EL Hayek ◽  
Michael Engelmann ◽  
Otfried Friedreich ◽  
Bernhard Weller
Keyword(s):  

2009 ◽  
Vol 16 (01) ◽  
pp. 37-42 ◽  
Author(s):  
CHIH-KUANG WANG ◽  
SZU-HSIEN CHEN ◽  
WAN-YUN LI ◽  
CHERN-HSIUNG LAI ◽  
WEN-CHENG CHEN

Calcium phosphate and silicate-modified gold surfaces have potential applications in orthopedic and dental reconstruction, especially when combined with bone cement or dental resins. The aim of this study was to evaluate the formation of a Si – Na – Ca – P glass system nanoshell on functionalized gold nanoparticles. Stable gold nanoparticle suspensions were prepared by controlled reduction of HAuCl 4 using the sodium citrate method to obtain a nanogold-mercaptopropyltrimethyloxysilane (MPTS)–silicate–tetraethylothosilicate (TEOS)-capped particle solution. The nanoshells were formed when directly reacted with a 10-4 M calcium phosphate ion solution. The median nanoparticle diameter was observed to be 15 nm. The MPTS–silicate–TEOS–functionalized nanoshell more effectively formed a glass shell as compared with a nonsilicate nanoshell. The changes in the surface morphology and composition were observed by a scanning transmission electron microscope equipped with energy-dispersive X-ray spectroscopy. As seen using EDS, the nanoshell was in a glass phase with CaO -poor layers.


1985 ◽  
Vol 3 (3) ◽  
pp. 1270-1273 ◽  
Author(s):  
Raymond P. Belanger ◽  
Wayne J. Miller
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2017 ◽  
Vol 49 (3) ◽  
pp. 207-224 ◽  
Author(s):  
Parra Parra ◽  
Marina Vlasova ◽  
Aguilar Márquez ◽  
Tamara Tomila

In this work, the specific features of formation of a composite material consisting of a mixture of low-melting ground glass and waste active sludge, which is used for sewage purification, have been considered. It has been established that, after low-temperature (600-700?C) short-term (30-60 min) treatment, specimens consist of a porous glass shell and a core saturated by carbon form. With change in temperature treatment conditions, the thickness and porosity of the shell and the size of the carbonized core change, leading to different absorption and adsorption properties. Due to the presence of a carbon-containing core, specimens absorb efficiently methylene blue (MB) from aqueous solution.


2013 ◽  
Vol 25 (3) ◽  
pp. 476-483 ◽  
Author(s):  
Hiroki Kuriki ◽  
◽  
Yoko Yamanishi ◽  
Shinya Sakuma ◽  
Satoshi Akagi ◽  
...  

We have successfully produced mono-dispersed microgas bubbles less than around 10 µm in diameter in an electrically induced ultrasonic field. The discharged output power and conductive area of the micro-electrode are controlled by glass shell insulation around the copper micro-wire. A small space between the wire and glass tip, a “bubble reservoir,” contributes to the stabilization of the electric discharge and directional bubble generation. The directionally dispensed bubbles can be used for processing soft materials such as biological cells. For the present study, the cell membrane has successfully been processed with resolution of a few µm order and without any thermal collateral damage.


1981 ◽  
Vol 18 (3) ◽  
pp. 1272-1275 ◽  
Author(s):  
R. L. Downs ◽  
M. A. Ebner ◽  
B. D. Homyk ◽  
R. L. Nolen
Keyword(s):  

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