Profile forming

Professorat, n. professorship, professor-haft, -Iscb, a. professorial. Professorschaft, Professur, /. professorship. Profileisen, n. sectional iron or steel, profilieren, v.t. profile, form, shape streamline. 

SCHEME 9.15 Product profiles formed by QM3 depend on the fast and reversible addition of nucj in competition with the slow and irreversible addition of nuc2. 

Silicon profile formed at 500eV.(a) An ion beam composed of Ar Xe+, XeF2+ (b) CAIBE with an Ar+ beam in conjunction with XeF2 in the sample chamber. 

For infinitely fast kinetics, then, the temperature profiles form a discontinuity at the infinitely thin reaction zone (see Fig. 6.11). Realizing that the mass burning rate must remain the same for either infinite or finite reaction rates, one must consider three aspects dictated by physical insight when the kinetics are finite first, the temperature gradient at r = rs must be the same in both cases second, the maximum temperature reached when the kinetics are finite must be less than that for the infinite kinetics case third, if the temperature is lower in the finite case, the maximum must be closer to the droplet in order to satisfy the first aspect. Lorell et al. [22] have shown analytically that these physical insights as depicted in Fig. 6.15 are correct. 

Older profiles formed under warm and humid climates show depletion of LREE in the upper saproiite and enrichment (particularly for Ce) towards the base... 

Fig. 9.4. (a) The dependence of the stationary-state concentration of reactant A at the centre of the reaction zone, a (0), on the dimensionless diffusion coefficient D for systems with various reservoir concentrations of the autocatalyst B curve a, / = 0, so one solution is the no reaction states a0i>8 = 0, whilst two other branches exist for low D curves b and c show the effect of increasing / , unfolding the hysteresis loop curve d corresponds to / = 0.1185 for which multiplicity has been lost, (b) The region of multiple stationary-state profiles forms a cusp in the / -D parameter plane the boundary a corresponds to the infinite slab geometry, with b and c appropriate to the infinite cylinder and sphere respectively. 

Preparation and maintenance of the unknown profile form, normally available from any government safety office. 

Fig. 28. Composition of passive layers on Fel5Cr from ISS sputter depth profiles formed (a) in 0.5 M H2SO4 at 0.90 V as a function of time.

Fig. 32b. Composition of passive layers on Fe/Al alloys from ISS sputter depth profiles formed in phthalate buffer pH 5.0 at E = 1.0 V for 300 s [76],...

Double- and multi-flighted profiles form open drag channels through which the product can flow back [1, 2]. Single-flighted profiles can enclose the barrel angle fully and are therefore force-feeding, other than for the clearances. 

FIGURE 4 Mushroom-shaped etch profiles formed by dopant-selective PEC etching of a p-n GaN homostructure [30],... 

Depending on this, a concentration profile occurs as shown in Figure 4.1.2. The concentration in the gas phase is considered to be equal at every point. If the transport of the reactants through the boundary layer and the catalyst is much faster than the reaction no concentration profile occurs. However, if the reaction is faster than the transport of the molecules, a concentration profile forms, with a shape depending on the differences in velocity. 

Routine procedures to assay the extent of oxidation in lipids and lipid-containing foods should be simple, reliable and sensitive. Results from routine procedures should ideally correlate well with results obtained from sensory taste panels. St. Angelo (1996) has described volatile compound profiles formed during lipid oxidation in different groups of food products. However, because of the complexity of lipid oxidation, no single test can be equally useful at all stages of the oxidative process. The methods should be capable of detecting autoxidation before the onset of off-flavor. This is particularly true in the case of milk products where a low level of oxidation can lead to off-flavor. 

Profile forming is achieved by passing the extrudate through a series of calibration dies, which cool the material through contact with the metallic walls of the calibrators. Vacuum holes or slots are used with the water cooled walls to improve and maintain final product dimensions. Alternatively, for pipe extrudate, the... 

Fig. 28 shows growth under base conditions, but at a resist wall angle of 70 °. In this case, there is an enduring basis for radially enhanced diffusion near the sides of the feature, since the electrode profile forms an obtuse angle with the resist wall. Nonuniformity increases fairly steadily during growth and reaches 8 percent at... 

FFF methods make use of the formation of an exponential concentration distribution of each sample component across the channel with the maximum concentration at the accumulation wall, which is a consequence of constant and position-independent velocity of transversal migration of the affected species due to the field forces. This concentration distribution is combined with the velocity profile formed in the flowing liquid. Focusing FFF methods make use of transversal migration of each sample component under the effect of driving forces that vary across the channel. As a result, the sample components are focused at the positions where the... 

Figure 4. Concentration Profile Formed During Operation of...

MCPs operate on the same principle as CDEMs. A microchannel plate is essentially a monolithic array of miniaturized CDEMs fabricated in a single wafer or disk of glass. The disk contains pores extending from the upper surface to the lower surface. These pores are known as channels and perform the same function as the interior of the tube in a CEM, but in contrast to a typical CEM, the entrance ends of the channels are not flared. The channels are typically 3 to 30 micrometers in diameter depending on the design. The length of the channels is set by the thickness of the disk, typically 200 to 1000 micrometers. MicroChannel plates can be fabricated in areas measured in cm, and because the disk-shaped profile forms a nearly flat stopping surface for ions, they are ideal detectors for TOE mass spectrometers. Burle and Hamamatsu are the major suppliers of these devices. 

Shock Layer Because the efficiency of actual columns is finite, concentration shocks are not stable. They are eroded by axial dispersion and the finite rate of mass transfer. A steep concentration gradient is formed instead. The steepness of the profile depends on the axial dispersion and the mass transfer resistance. In frontal analysis, a constant pattern, or steady-state profile, forms after an infinite period of time and an infinite migration length. In this case, the shock layer profile... 

The use of MM5 simulated surface flow alone to run the HPAC model worked reasonably well in some cases but not so in other cases. The failure has a profound impact on 12-h plume prediction. The most desirable built-in HPAC input mode appears to be the 3D profile form of MM5 model data in all cases. 

The distribution of these precipitates across the membrane thickness is not uniform, as has been shown by electron microprobe Figure 11). The profile form depends on different parameters such as time of soaking in KOH solutions, KOH concentrations, etc. 

Soil profiles form because of the endless migration of ions, molecules, and particles into the soil material. Meteoric inputs include H2O, CO2, O2, nitrogenous compounds, pollutants, salts, and dust. These molecules and compounds come from space, from the atmosphere and the ocean, and other terrestrial ecosystems. 

When making the bond between the top and the bottom PDMS parts of the device by plasma oxidation, the edge surface of the membrane between the top and bottom parts was aligned along the profile formed by the photoresist pattern (Figure 4.6A) using a thin layer of methanol between the two parts.25... 

U.S. Pat. No. 6,844,040 [54] discloses a coextrusion process of making reinforced WPC structural members comprising hollow profiles formed from a thermoplastic-cellulose fiber composite material and reinforcing sections bonded to the hollow profile. 

Since the absorption component of the FM signal is recorded as a derivative spectrum, a method for extraction of the Doppler profiles form the FM absorption signal is also needed. North et al. [69] first suggested using a resursive relationship in order to extract this information. In a more recent paper, they settled on a method that expands the FM absorption signal in a Taylor series [67], and then used both intergation and differentiation with respect to dto in order to obtain two solutions, one for <5(cu0),... 

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