Receiver geometry

Karpur, P Benson. D. M., Matikas, T. E., Kundu, T.. and Nicolaou. P. D. (1995b), An approach to determine the experimental transmitter-receiver geometry for the reception of leaky lamb waves, Materials Evaluation. Dec. 1995, 53. 12. 1348 1352. 

Rapid prototyping through stereolithography (STL) or other processes needs special shape information in the form of layers. The boundary of the shape of the part is processed by special methods, such as approximation by triangles. Control equipment for rapid prototyping receives geometry in standard STL format. The part model is translated into STL. All geometric... 

In many cases the field stop is set by the detector size however, as the aperture stop approaches the field stop the risk of seeing unwanted stray light increases. Other receiver geometries may be used. They all have effective aperture and field stops and it is good operating practice to make them well defined (Fig. A3). 

Shear wave splitting analysis is becoming a very popular method for determining seismic anisotropy in the cmst. This is in part due to the abundance of data and methods available and also to the relative insensitivity to the source-receiver geometry (other than deep enough earthquakes for the rays to arrive within the shear wave window) and independence from the need for dense networks of seismometers (see Seismic Network and Data Quality ). Another benefit of... 

The probe receives a signal when either the driver or detector coil passes a flaw or other feature in the tube A signal is produced over the full length of the flaw. It is affected by geometry and permeability changes which cause the instrument zero to wander. 

One aspect of pressure vessel design which has received considerable attention in recent years is the design of threaded closures where, due to the high stress concentration at the root of the first active thread, a fatigue crack may quickly initiate and propagate in the radial—circumferential plane. Stress intensity factors for this type of crack are difficult to compute (112,113), and more geometries need to be examined before the factors can be used with confidence. 

The phenyl cation is an extremely unstable cation, as is reflected by the high hydride affinity shown in Table 5.2. In this case, the ring geometry opposes rehybridization so the vacant orbital retains sp character. Because the empty orbital is in the nodal plane of the ring, it receives no stabilization firom the n electrons. 

The rules for predicting angular geometries of halogen-bonded complexes B- XY have recently received support from a wide ranging analysis of X-ray diffraction studies in the solid state by Laurence and co-workers [205]. This study not only confirms the validity of the rules in connection with complexes B- XY, where XY is Cl2, Br2, I2, IC1 and IBr, with many Lewis bases B but also reinforces the conclusion that halogen bonds Z- X - Y show a smaller propensity to be non-linear that do hydrogen bonds Z- H — X. 

Inverse geometry Term used to describe the construction of a probe that has the 1H receiver coils as close to the sample as possible and the X nucleus coils outside these 1H coils. Such probes tend to give excellent sensitivity for 1H spectra at the expense of X nucleus sensitivity in 1-D techniques. They offer a lot of compensation in terms of sensitivity of indirectly detected experiments. 

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