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Heat local

Reversible Rubble Generation. In a two-layered pigmented polymeric layer system with ceramic coating, a bubble forms beneath the ceramic coating when heated locally (write process). For erasure, the bubble is closed again by heating the polymer close to its melting poiat (119). This development is also hampered by extensive erase times (>5 ms). [Pg.150]

Lithium is isolated in a protective film [8]. During the deposition of lithium, the protective film may be heated locally by ion transport in the film itself. As a result of this local heating, part of the protective film (SEI) becomes an electronic conductor, and therefore lithium metal is deposited in the film. If local heating does not occur during stripping, the isolated lithium becomes electrochemically inactive. [Pg.343]

There is very little basic difference in the procedures for joining tubes of different sizes and for joining tubes of the same size. The main difference lies in the preparation of the end of the larger tube the end of this tube should be drawn down to a spindle and the spindle cut off in the flame. The closed end so produced should be heated locally so that vslien it is blown out the hole produced will be of the same size as the bore of the smaller tube. But it is usually better to... [Pg.37]

Normally, after being heated, these streams are used in the boiler area (deaerator feedwater, cold return condensate, boiler feedwater, RO feedwater) or in the combustion chamber (air preheat). However, economizers can be used to recover and supply heat elsewhere, such as hot process water or hot utihty water, especially as used in the food processing and pulp/paper industries. Additionally, recovered flue gas waste heat can be used indirectly i.e., remote process streams can be heated locally with hot steam condensate, and then the cooled return steam condensate can be reheated in the flue gas economizer. An... [Pg.51]

Because selenium powder and sodium selenite are extremely toxic, they can only be used under a fume hood with local exhaust ventilation. In addition, goggles, rubber gloves, an apron, and a dust mask should be worn. If the toner is heated, local exhaust ventilation should be provided. [Pg.359]

Simultaneous heat and mass transfer plays an important role in various physical, chemical, and biological processes hence, a vast amount of published research is available in the literature. Heat and mass transfer occurs in absorption, distillation extraction, drying, melting and crystallization, evaporation, and condensation. Mass flow due to the temperature gradient is known as the thermal diffusion or Soret effect. Heat flow due to the isothermal chemical potential gradient is known as the diffusion thermoeffect or the Dufour effect. The Dufour effect is characterized by the heat of transport, which represents the heat flow due to the diffusion of component / under isothermal conditions. Soret effect and Dufour effect represent the coupled phenomena between the vectorial flows of heat and mass. Since many chemical reactions within a biological cell produce or consume heat, local temperature gradients may contribute in the transport of materials across biomembranes. [Pg.363]

The small diameter of the incident beam from a stress camera or a Fastress unit is an advantage when one wishes to measure stress variations from point to point on a surface, as in the region near a weld. The stress distribution shown in Fig. 16-16, determined by a photographic method, simulates the residual stresses due to spot welding. The specimen was a steel strip 10 x 3 x inch (25 x 8 x 0.6 cm). A circular area of about I inch (1 cm) diameter, whose size is indicated on the graph, was heated locally to about 700°C for a few seconds by clamping the strip at its center between the two electrodes... [Pg.471]

Isotropically conductive adhesive interconnections can be repaired using techniques similar to those used for solder rework. By application of heat locally at a temperature above the T value, a section of adhesive can be softened and the device can be removed... [Pg.856]

When illuminated by light, the chromophore absorbs the light and subsequently dissipates heat locally, inducing an increase in the local temperature. The temperature increment is proportional to the incident light intensity and the concentration of chromophore, and therefore also to the network density 4>. Thus,... [Pg.2724]

For the direct analysis of in biological species, an interface is available [43]. The liquid samples are deposited into a bed of CuO powder which is held on a refractory support in an enclosed chamber. The CuO matrix is heated locally by an infrared laser, and the CO2 evolved is swept away by a flow of He into the ion source. [Pg.280]

Electric-strip heaters, hot plates or irons, and resistance blades are common methods of providing heat locally. Usually, the heating surface that will be in contact with the... [Pg.360]

A flow control for the VARTM process based on localized induction heating is one of the applications of induction heating. Localized heating elements can be used at the low permeability preform region which assists lowering localized resin viscosity and increased resin penetration through the preform. There are promising results in terms of improved flow patterns... [Pg.455]

The patch adheres to the skin and when it is exposed to air, the contained heating element is activated and through oxidation releases heat. Local skin temperature remains between 39 and 41°C during the heating phase of application. Systemic absorption is minimal and even with sequential or simultaneous applications of up to four patches, lidocaine plasma levels were low (9-12 ng/mL in adults) and tetracaine levels were essentially non-detectable. The product insert indicates that application of one Synera patch for up to 30 minutes in children 4 months to 12 years of age produced maximum peak plasma concentrations of lidocaine and tetracaine of 63 ng/ mL and 65 ng/mL, respectively. Application of two Synera patches for up to 30 minutes to children 4 months to 12 years of age produced peak lidocaine levels of up to 331 ng/mL and tetracaine levels of less than 5 ng/mL. [Pg.286]

Dehydration/Caldnation Pathway 2 Starting from larger gibbsite grains and during rapid heating, locally hydrothermal conditions may occur. However, for these conditions, a different transition pathway has been observed experimentally (Figures 7.6 and 7.7). [Pg.182]


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See also in sourсe #XX -- [ Pg.10 ]




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