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This is an endothermic reaction accompanied by an increase in the number of moles. High conversion is favored by high temperature and low pressure. The reduction in pressure is achieved in practice by the use of superheated steam as a diluent and by operating the reactor below atmospheric pressure. The steam in this case fulfills a dual purpose by also providing heat for the reaction. 

Between the bit and the surface, where the torque is generated, we find the drill string (Fig. 3.9). While being mainly a means for power transmission, the drill string fulfils several other functions, and if we move up from the bit we can see what those are. 

An organisation such as the example above includes sub groups for each of the main activities and a support (or services) group to manage information and procurement. Auditing commitments may be fulfilled by an independent in-house team or by external auditors. 

It obvious a today s demand on repetitive inspections to predict the safety of pressure equipments during the oncoming service period. The acceptance from the industry for this kind of testing is accessible, if you can fulfil this requirement an enlarge in this way the competitiveness. 

Neural network classifiers. The neural network or other statistical classifiers impose strong requirements on the data and the inspection, however, when these are fulfilled then good fully automatic classification systems can be developed within a short period of time. This is for example the case if the inspection is a part of a manufacturing process, where the inspected pieces and the possible defect mechanisms are well known and the whole NDT inspection is done in repeatable conditions. In such cases it is possible to collect (or manufacture) as set of defect pieces, which can be used to obtain a training set. There are some commercially available tools (like ICEPAK [Chan, et al., 1988]) which can construct classifiers without any a-priori information, based only on the training sets of data. One has, however, always to remember about the limitations of this technique, otherwise serious misclassifications may go unnoticed. 

Because the pseudo-inverse filter is chosen from the class of additive filters, the regularization can be done without taking into account the noise, (n). At the end of this procedure the noise is transformed to the output of the pseudo-inverse filter (long dashed lines on Fig. 1). The regularization criteria F(a,a) has to fulfill the next conditions (i) leading to an additive filter algorithm, (ii) having the asymptotic property a, —> a, for K,M... 

Based on the above mentioned requirements, you can therefore deduet the necessity of achieving a higher degree of test reliability by employing eddy-current test procedures that can fulfil these requirements. 

Besides, for there is living time limitation for ropes being in use. A work fulfilled by a rope and performed in tone-kilometers may be used as a limit too. ... 

The research [5] showed the inspection records fulfilled by different instruments are very close each other. Nevertheless some of the instruments are able to put an information out to a computer, main inspection records usually are performed as chart diagrams of the LMA and LF channels. 

Using the theorem that the sufficiency condition for mathematical correctness in 3D-reconstruction is fulfilled if all planes intersecting the object have to intersect the source-trajectory at least in one point [8], it is possible to generalise Feldkamp s method. Using projection data measured after changing the sotuce-trajectory from circular to spiral focus orbit it is possible to reconstruct the sample volume in a better way with the Wang algorithm [9]. 

As for BC-50 betatron it is possible to fulfill radiographic control of steel with thickness of 360 mm for the same time tmd energy at focal distance of 3.0m 450 mm steel at F=1.5m, and 480mm steel at F=3.0m with the help of PT-1 film type. 

The basic idea is to extract firstly "sure" contours contour segment extremities are identified by studying the local neighbourhood of each pixel. The aim of closing contours algorithm is to find the best path between two points that are extremities of the gap to fulfil. 

It is well established that GO approximation leads to aceurate results if both the source and the observation points are not close to the interface. In practice, this means that both points must be distant from the interface of at least one wavelength. This condition is always fulfilled for the source point. For the field-point, the accuracy of the solution is ensured if the above condition is completed, as shown by comparing exact and approximate results [5]. 

The system allows the inspeetion of all the blade roots of the whole engine within less than one hour. This is a very fast method which fulfils all the customer requirements concerning reliability, inspeetion speed and the inspeetion on the wings". 

We showed that experimentally recorded DACs and synthetically generated DGS curves are equivalent if the described requirements are fulfilled. Consequently an echo amplitude evaluation program has been developed which combines both techniques in one instrument. The software of the new state-of-the-art Ultrasonic Notebook USLT 2000 allows, apart from many other new possibilities, the combined or exclusive use of the reference block and the DGS method for amplitude evaluation. Even in those situations where DACs cannot be re-... 

In order to assure that the 3D inspection system concept also in the future fulfills all the requirements for a 3D inspection system for complex geometry, the system is constantly developed and extended with new and powerful facilities. Some options assumed to be implemented in near future are ... 

The first attempt to come up with a standard multitechnique NDE format model fulfilling these requirements was one of the main achievements of the TRAPPIST project, led between 1992 and 1994 in the frame of the European RACE Program [1],... 

As referred to above, most of the modules involve the intervention of a third party, the so-called notified bodies. These bodies are designated by Member States as being competent to carry out the certification tasks for which they are notified. As a precondition for their notification they must fulfil the minimum criteria which are set out in the relevant directives. These conditions vary from independence, impartiality and professional integrity, to technical competence, possession of or access to necessary facilities and to liability insurance. Once notified, the Commission publishes a list of all notified bodies in the Official Journal, It is worth noting that there is free competition between notified bodies and that manufacturers can make their own choice from all notified bodies notified within the European Union. 

The user inspectorate must fulfil the same technical criteria as the notified body. In addition, it must be organisationally identifiable and demonstrate its impartiality. It must not engage in any activities that might conflict with its independence of judgement and integrity. Given that the authorisation of user inspectorates to carry out conformity assessment is an innovation for technical harmonisation at Union level, the Commission shall monitor the application of this measure and evaluate its effects three years after the coming into force of the directive. 

The failure of a concrete structure is of course not confined to catastrophic collapse. A concrete structure has failed or reached the end of its serviceability life when it is no longer capable of fulfilling its design functions, e.g. leak-tightness or as a barrier against deleterious elements which may cause corrosion. 

From the fact that f/conmuites with the operators Pj) h is possible to show that the linear momentum of a molecule in free space must be conserved. First we note that the time-dependent wavefiinction V(t) of a molecule fulfills the time-dependent Schrodinger equation... 

If the excitation energy required to fomi activated species A is much larger than k T its concentration will remain small. This is fulfilled if k Following Bodenstein, [A ] is then assumed to be quasi-stationary,... 

Figure C2.5.10. The figure gives tire foldability index ct of 27-mer lattice chains witli sets containing different number of amino acids. The sets are generated according to scheme described in [27], The set of 20 amino acids is taken as a standard sample. Each sequence witli 20 amino acids is optimized to fulfil tire stability gap [5]. The residues in tire standard samples are substituted witli four different sets containing a smaller number of amino acids [27]. The foldability of tliese substitutions is indicated by tire full circles. The open diamonds correspond to tire sequences witli same composition. However, tire amino acids are chosen from tire reduced representation and tire resultant sequence is optimized using tire stability gap [5].

In this section, we prove that the non-adiabatic matiices have to be quantized ( similar to Bohr-Sommerfeld quantization of the angulai momentum) in order to yield a continous, uniquely defined, diabatic potential matrix W(i). In another way, the extended BO approximation will be applied only to those cases that fulfill these quantization rules. The ADT matrix A(s,so) transforms a given adiabatic potential matiix u(i) to a diabatic matiix W(s, so)... 

As the D matrix is a diagonal matrix with a complex number of norm exponent of Eq. (65) has to fulfill the following quantization mle ... 

We concentrate on an adiabatic tri-state model in order to derive the quantization conditions to be fulfilled by the eigenvalues of the non-adiabatic coupling matrix and finally present the extended BO equation. The starting point is the 3x3 non-adiabatic coupling matrix,... 

We already assume that the t matrix fulfills the conditions in Eqs. (48) and (49). These conditions ensures that the matrix G diagonalizes t(s) along... 

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