Homogeneous resistance

Here we present results of high-field tunable-frequency ESR studies of CuGe03, which were done at the National High Magnetic Field Laboratory, Tallahassee, FL. A key feature of the employed technique is a combination of a 25 T high homogeneity resistive magnet and a set of easily-tunable sources of mm- and submm- wave radiation, Backward Wave Oscillators. 

A long homogeneous resistance wire of radius = 5 nun is being used to heat the air in a room by the passage of electric current. Heat is generated in the wire uniformly at a rale of 5 X 10 W/m as a result of resistance heating. If the temperature of the outer surface of the wire remains at 180°C, determine the temperature at r = . 5 mm after steady operation conditions are reached. Take the thermal conductivity of the wire to be fc = 8 W/m C, Answer 200°C... 

Two types of SP cells have been postulated to develop in media with presumably homogenous resistivity. These are SP cells over bedrock mineralisation and deep hydrocarbon-based cells in bedrock. These cells are not centred on zones of elevated electrical conductivity but rather on zones of elevated SP (voltage) gradient. 

Materials and Methods. Spider mites used in these experiments were maintained in colonies on bean plants as outlined by Rizzieri et al. (22.) Three colonies were used in the experiment. Two originated from field-collected populations one (Res) which was continuously selected with dicofol and was homogeneously resistant to dicofol, and the second (Sus), which was not selected with dicofol and was homogeneously susceptible to dicofol. Each colony was started with animals collected from a single, different apple orchard. The third colony was a near-isogenic line composed of the susceptible colony genome into which the factor conferring dicofol resistance had been... 

For the specific case of normal incidence illumination of a homogenous resist film (see Fig. 12.3), the electric field inside the resist 2(2) is given by ... 

Muenstermann, R., Menke, T., Dittmann, R and Waser, R. (2010) Coexistence of filamentary and homogeneous resistive switching in Fe-doped SrTiOs thin-film memristive devices. Adv. Mater., 22, 4819-4822. 

Mitigation According to the defence in depth approach, mitigation is, after prevention, one of the two pillars of nuclear safety. In order to avoid any weak point in the primary containment (Fig. S. 1), the design must present homogeneous resistance to energy release in the short term, and resist thermal effects of HCDA in the long term. This last point requires a debris tray able to ensure retention and coolability of the whole core inventory via the DHR system. 

Caution must be exercised to be sure that consistent units are used in this formula. For example, if the soil resistivity is measured in Ohm-meters, the rod dimensions must be expressed in meters. It is important to note that this formula is valid for soil of homogeneous resistivity in other words, the resistivity values along the baseline should be close to the values perpendicular to the baseUne. Procedures for dealing with inhomogeneous soil are provided by King et al. (1978). 

Pump Suction. The net positive suction head required (NPSHR) affects the resistance on the suction side of the pump. If it drops to or near the vapor pressure of the fluid being handled, cavitation and loss of performance occurs (13). The NPSHR is affected by temperature and barometric pressure and is of most concern on evaporator CIP units where high cleaning temperatures might be used. A centrifugal booster pump may be installed on a homogenizer or on the intake of a timing pump to prevent low suction pressures. 

Silicones. Homogeneous platinum catalysts, used in siUcone manufacture, are retained in the product. This has been shown to impart improved fire resistance in speciali2ed mbbers. 

Ester plasticizers are used mainly in very polar elastomers, such as neoprene and nitrile mbber, to improve low or high temperature performance or impart particular oil or solvent resistance to a compound 5—40 parts are commonly used (see Plasticizers). Resins and tars are added to impart tack, soften the compound, improve flow, and in some cases improve filler wetting out, as is the case with organic resins in mineral-filled SBR. Resinous substances are also used as processing agents for homogenizing elastomer blends. 

Poly(ethyl methacrylate) (PEMA) yields truly compatible blends with poly(vinyl acetate) up to 20% PEMA concentration (133). Synergistic improvement in material properties was observed. Poly(ethylene oxide) forms compatible homogeneous blends with poly(vinyl acetate) (134). The T of the blends and the crystaUizabiUty of the PEO depend on the composition. The miscibility window of poly(vinyl acetate) and its copolymers with alkyl acrylates can be broadened through the incorporation of acryUc acid as a third component (135). A description of compatible and incompatible blends of poly(vinyl acetate) and other copolymers has been compiled (136). Blends of poly(vinyl acetate) copolymers with urethanes can provide improved heat resistance to the product providing reduced creep rates in adhesives used for vinyl laminating (137). 

Specific cake resistance (porosity) Viscosity Homogeneity of cake as deposited on the filter medium... 

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