Susceptibility initial

A common test for the sensitivity, ie, the initiation susceptibility, of an expl is the detn of the minimum priming charge required to produce de tonation, Baum et al (Ref 4) present the following tabulation to show that the min priming... 

P. A. Klein and R. A. Hays, The Hydrogen Cracking Initiation Susceptibility of HY-I30 Steel Base Plates and Weldments in Marine Enviroments, (1989), David Taylor Research Center, Annapolis, MD. 

Material Initial Susceptibility (/ at H 0) Hysteresis Loss per Cycle (J/m ) Saturation induction (Wb/m )... 

Magnetically soft Fe-Ni alloys can have their properties altered by heat treatment. The compound NisFe undergoes an order-disorder transformation at about 500°C. Since the susceptibility of the ordered phase is only about half that of the disordered phase, a higher susceptibility is realized when the alloy is quenched from 600°C, a process that retains the high-temperature, disordered structure. Heat treatment of Fe-Ni alloys in a magnetic field further enhances their magnetic characteristics (see Figure 6.61), and the square hysteresis loop of 65 Permalloy so processed is desirable in many applications. A related alloy called Supermalloy (see Table 6.19) can have an initial susceptibility of approximately one million. 

For thin films with a perpendicular anisotropy (easy axis normal to the film plane), Huang et al. (199S) determined magnetostriction (As) and anisotropy (Iff) values, by using the so-called initial-susceptibility method. An ac magnetic field was applied in the film direction, and the induced magnetisation component in the field direction was measured. These authors deduced K and As from the x 1 vs. o plots, using ... 

The formulas derived above, despite their cumbersome look, are very practical. Indeed, they present the nonlinear initial susceptibilities of a superparamagnetic particulate medium as analytical expressions of arbitrary accuracy. Another remarkable feature of the formulas of Section III.B.6 is that with respect to the frequency behavior they give the exact structure of the susceptibilities and demonstrate that those dependencies are quite simple. This makes our formulas a handy tool for analytical studies. Yet they are more convenient for numerical work because with their use the difficult and time-consuming procedure of solving the differential equations is replaced by a plain summation of certain power series. For example, if to employ Eqs. (4.194)-(4.200), a computer code that fits simultaneously experimental data on linear and a reasonable set of nonlinear susceptibilities (say, the 3th and the 5th) taking into account the particle polydispersity of any kind (easy-axes directions, activation volume, anisotropy constants) becomes a very fast procedure. 

Figure 9. Plot showing variations in susceptibility measured after a series of heating and cooling steps for Bone Chamber and Reed Chamber sediments. Susceptibility is normalised relative to the initial susceptibility measured before heating.

It is also clear, and has been established for some time now, that some neurons are susceptible to relatively short periods of ischaemia while others are not. Initially there are changes in the biochemical activity of neurons, in parallel with other cell types, which precede progressive tissue destruction. Although both types of neurons demonstrate similar morphological responses initially, susceptible neurons, perhaps due to differences in the biochemistry of some structural cytoskeletal components, for example, enter a postischaemic pathological cascade culminating in their death between 2 and 4 days and later after the ischaemic episode. However, despite a great deal of work which has attempted to unravel these complex intracellular processes, there is still not a clear and simple overview available. It is also apparent that for... 

Initial susceptibility measurements were carried out from room temperature to 873 K for the compositions, using a field of 0.5 Oe by a double coil method. From the plots of x/Xi vs T, the Curie temperatures (Tc) of the compounds were determined. 

The temperature dependence of the initial susceptibility Xo.r should follow the laws... 

For a range of related materials the concentration dependence of the magnetization M, Curie temperature Tc and initial susceptibility xo takes the form... 

Background Before the advent of penicillin. Grampositive cocci were responsible for most known infections. Initially susceptible to basic penicillins. Grampositive bacteria have developed resistance to basic penicillins and some strains may be resistant to specialized penicillins. Fortunately, no strains have become resistant to vancomycin (a bactericidal agent that is more toxic than penicillins). 

Gieraltowski, J. (1989). Initial susceptibility frequency spectra and distribution... 

The A vs. T curves of the heavy RAI2 compounds are all shown in fig. 57. Again the arrows indicate the Curie temperature as found by initial susceptibility measurements. It is interesting to note that the A vs. T curves of these compounds are nearly linear with temperature in the whole temperature range. Such a behaviour is different from what is found for pure metals such as Al. 

Review of eiectronic Inexpensive after initial Susceptible to programming... 

Eq. (50) is needed to calculate the complex initial susceptibility z g>). The Ising system induced magnetization (total induced magnetic moment per unit volume) is given by... 

Comparison of the calculations of initial susceptibility and magnetization performed with different boundary conditions shows that the use of a periodic system with metallic boundary is more appropriate, due to the much weaker dependence on system size, than either a periodic system with vacuum boundary or a finite spherical box [97]. 

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