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Universal nature

Semiconductor devices ate affected by three kinds of noise. Thermal or Johnson noise is a consequence of the equihbtium between a resistance and its surrounding radiation field. It results in a mean-square noise voltage which is proportional to resistance and temperature. Shot noise, which is the principal noise component in most semiconductor devices, is caused by the random passage of individual electrons through a semiconductor junction. Thermal and shot noise ate both called white noise since their noise power is frequency-independent at low and intermediate frequencies. This is unlike flicker or ///noise which is most troublesome at lower frequencies because its noise power is approximately proportional to /// In MOSFETs there is a strong correlation between ///noise and the charging and discharging of surface states or traps. Nevertheless, the universal nature of ///noise in various materials and at phase transitions is not well understood. [Pg.346]

Several further comparisons attest to the universal nature of the statistical fragmentation theory. In Fig. 8.28 the consequences of a nuclear fragmentation event brought about by the 70 MeV per nucleon collision of a carbon nucleus with a silver nucleus is shown (Greiner and Stocker, 1985). In this... [Pg.306]

In this section we continue to explore the consequences of the existence of the low temperature excitations in amorphous substances, which, as argued in Section III, are really resonances that arise from residual molecular motions otherwise representative of the molecular rearrangements in the material at the temperature of vitrification. We were able to see why these degrees of freedom should exist in glasses and explain their number density and the nearly flat energy spectrum, as well as the universal nature of phonon scattering off these excitations at low T < 1 K). [Pg.142]

Principles and Characteristics The main reasons for hyphenating MS to CE are the almost universal nature of the detector, its sensitivity and the structural information obtainable, including assessment of peak purity and identity. As CE is a liquid-phase separation technique, coupling to the mass spectrometer can be achieved by means of (modified) LC-MS interfaces. Because of the low flow-rates applied in CE, i.e. typically below lOOnLmin-1, a special coupling device is required to couple CE and the LC-MS interface. Three such devices have been developed, namely a... [Pg.544]

Kant I (1755) Universal Natural History and Theory of Heaven (English translation by Ian C. lohnston, Malaspina University-College, Nanaimo, BC http //www.mala.bc.ca/ johnstoi/ kant/kant2e.htm... [Pg.41]

Scaling. The fact that the value of the dimensionless parameter a is the same regardless of the units (e.g., scale) used in the problem illustrates the universal nature of dimensionless quantities. That is, the magnitude of any dimensionless quantity will always be independent of the scale of the problem or the system of (consistent) units used. This is the basis for the application of dimensional analysis, which permits information and relationships determined in a small-scale system (e.g., a model ) to be applied directly to a similar system of a different size if the system variables are expressed in dimensionless form. This process is known as scale-up. [Pg.21]

One of the principal difficulties faced when employing Lagrangian micromixing models is the determination of tm based on properties of the turbulent flow fields. Researchers have thus attempted to use the universal nature of high-Reynolds-number isotropic turbulence to link tm to the turbulence time scales. For example, in the E-model (Baldyga and Bourne 1989) the engulfment rate essentially controls the rate of micromixing and is defined by... [Pg.216]

Deeper yet, these images represent the macrocosmic energies that are likewise within us. Ultimately, those forces comprising the macrocosm, the universal nature, transcend any cultural or historical settings, just as the adepts and Sages, who have attained to that level of Reality, transcend family, society, race, culture, and external creeds. [Pg.9]

Substituent effects have fascinated organic chemists for generations and their study is still an active area of research. The generalization of the influence of substituents is expected to lead to an understanding of physical properties, structures, equilibria and reactions in organic chemistry (Schleyer, 1987). Substituents can be considered as perturbations of a given standard system and it is often believed that their character remains basically unaltered from one molecular situation to another, i.e. an invariable universal nature of a substituent is assumed. [Pg.131]

Classical laboratory, manual methods conducted on a macro-scale where sample quantities arc in the range of grams and several milliliters. These are the techniques that developed from the earliest investigations of chemistry and which remain effective for teaching the fundamentals of analysis. However, these methods continue to be widely used in industry and research, particularly where there is alarge variety of analytical work to be performed. The equipment, essentially composed of analytical balances and laboratory glassware, tends to be of a universal nature and particularly where budgets for apparatus are limited, the relative modest cost of such equipment is attractive. [Pg.94]

It appears that there are two temperatures of a universal nature that describe the thermodynamic properties for the dissolution of liquid hydrocarbons into water. The first of these, 7h is the temperature at which the heat of solution is zero and has a value of approximately 20°C for a variety of liquids. The second universal temperature is Ts, where the standard-state entropy change is zero and, as noted, Ts is about 140°C. The standard-state free energy change can be expressed in terms of these two temperatures, requiring knowledge only of the heat capacity change for an individual substance... [Pg.218]

Another salt often worked with in the same way and mentioned earlier is called Dew Salt, or The Heavenly Dew Salt. It can be derived from collected dew, or rainwater (especially that collected during a thundershower) but this is long and tedious. The salt itself is ammonium nitrate. The Dew Salt is highly deliquescent and said to be determined to the Mineral realm especially, but it is of a Universal nature. Sometimes, you can find this salt in gardening stores as a fertilizer, but it is becoming harder to find because of its use in creating makeshift explosives. [Pg.57]

Lu Wenqing, Cheng Baorong and Deng Haishan, Preparation and characterizations of colloidal BaTlOj superfines. J. Wuhan University (Natural Science Edition). 46(2000) pp. 245-248. [Pg.90]

Cheng Baorong, Lu Wenqing, Huang Jinfan and Jin Anding, Preparation and characterization of BaTiOj nanocrystal. J. Nanjing Normal University (Natural Science Edition) 23(1), 2000. pp. 49-53. [Pg.90]

Ren, F., Gao, S., Chang, Z., Yang, X., and Shi, Q. (2001) Study on the regularity of crystal structures of complexes of rare earth perchlorate with glycine. Xibei Daxue Xuebao, Ziran Kexueban (Journal of Northwest University, Natural Science Edition), 31 (2), 111-114. [Pg.136]

Xingzhong Yuan, Fahong Li, Xiaoqing Chen, et al., Stndy on the catalytic pyrolysis of polyethene plastics by two step. Journal of Hunan University (Natural... [Pg.752]


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See also in sourсe #XX -- [ Pg.203 ]




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