Glass design

Fig. 6. Viscosity vs temperature for some commercial glasses designated by glass codes (see Table 3).

A delay line can also be formed from a slice of a special glass designed so that the velocity of sound is as nearly as possible independent of temperature. (The term isopaustic has been coined to describe such a material.) PZT ceramic transducers are soldered on two 45° metallized edges of the slice. The input transducer converts the electrical signal to a transverse ( shear ) acoustic... 

Annealing a controlled cooling process for glass designed to reduce residual stress to a commercially acceptable level and to modify structure. 

A current USP proposal is in place to remove the NP Type glass designation. The rationale for this revision is because NP Types glass is not commonly used in the pharmaceutical industry. 

The term crystal glass designates a high grade of clear colourless glass with... 

Research the processes of recycling aluminum, plastic, and glass. Design a poster or a multimedia presentation for members of your community about one of the processes. Include the following considerations Why is it cost effective to recycle What resources are conserved What recycling is available in your area Flow can the members of your community use this information to make responsible choices about the products they purchase ... 

Care was taken to prevent the introduction of paramagnetic centers into the glass melt during production (Schnabel, private communication). With the two large pore size porous glasses (designated CPG-10-125 and CPG-10-240) used by Belfort et al (6), this was not the case and the relaxation model could not be fitted to the data. 

A. Stamboulis, E. Wang, Ionomer glasses design and characterisation, in D.S. Katti, A. Kumar (Eds.), Advanced Biomaterials Fundamentals, Processing and Applications, American Ceramic Society, Ohio, USA, 2009 (Chapter 12). 

Commercialization of technology is another direction to go. Recent development of commercially viable superlens prototype product at Bangor University is an important achievement (Fig. 7). More efforts are currently paid to optimize the product. The product can effectively transform a regular microscope into a nanoscope (offering 100 nm resolution in wide field and 50 nm resolution in confocal mode). The superlens resembles a standard coverslip glass design so it is naturally... 

Refractive Index, Abbe Value, Dispersion, and Glass Designation... 

Dielectric overglaze materials are vitreous glasses designed to fire at a relatively low temperature, usually around 550° C. They are designed to provide mechanical protection to the circuit, to prevent contaminants and water from spanning the area between conductors, to create solder dams, and to improve the stability of thick-film resistors after trimming. 

Button. Part of a piece of pressed glass designed to produce a hole when knocked out also sometimes called a... 

M-Glass. A high beryllia content glass designed especially for high modulus of elasticity. 

Raman spectroscopy was used to characterise sulfate species in borosilicate glasses designed for radioactive waste storage. Similar measurements were used to probe the structures of concentrated aqueous solutions of H2SO4 (81-100% H2SO4). A high-resolution study of the V4 band of SFe shows that the band origin is at 614.98196(15) cm ... 

The first example of a complete cycle in rational glass design has been reported for these glasses, and is summarized in Fig. 5.4. The authors [33, 50] derived the ratio of Zn/P concentration which produces an optimal dissolution in the body fluid in order to maintain the bioactivity. The QSPR model used accounts for the role of network polymerization on water chemical durability S%Xj = —1.92 Nx-o-x/ Otot + 1.33, n = 6, = 0.865, = 0.12, where %Xj, is the total leaching of the... 

Fig. 5.4 The rational glass design cycle illustrated for Zn-conteiining bioglasses [33, 50-53]...

Half-frame or full-frame glasses designed with ample lens curvature and lens wrap can help insure a wide field of vision. 

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