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X-ray imaging techniques at the best spatial resolution and using synchrotron facilities are put forth as powerful techniques for the search of small life forms in extraterrestrial rocks under quarantine conditions. Absorption and fluorescence X-ray microt ...
A phosphino,oxazoline P,N-bidentate ligand, 4, contg. 3,5-di-tert-butylphenyl groups was prepd. In the Heck arylation of dihydrofuran, 4 affords higher ee's than either 2 or 3, the unsubstituted and m-dimethylphenyl analogs, resp. Several Pd(0) complexes o ...
The tongue, the lips, the palate, and the throat are tracked in X-ray images showing the side view of the vocal tract. This is performed by using specialized histogram normalization techniques and a new tracking method that is robust against occlusion, noi ...
The tongue, the lips, the palate, and the throat are tracked in X-ray images showing the side view of the vocal tract. This is performed by using specialized histogram normalization techniques and a new tracking method that is robust against occlusion, noi ...
We describe a method for tracking tongue, lips, and throat in X-ray films showing the side-view of the vocal tract. The technique uses specialized histogram normalization techniques and a new tracking method that is robust against occlusion, noise, and spo ...
We demonstrate with practical tests that a photoelectron emission microscope (PEEM) can be advantageously used as a high-lateral-resolution detector of X-rays. The advantages of this approach are discussed, in particular for coherence-based techniques. (C) ...
Using the X-ray spectromicroscopy technique, we studied the primary and secondary electron photoemission of cesium iodide (CsI) films deposited on different substrates, such as copper, aluminum, stainless-steel, and gold-coated quartz. We found an increase ...
(2,6-Dichlorophenyl)- and (2,6-dibromophenyl)trialkylsilanes undergo hydrogen/metal interconversion preferentially at the 4- rather than 3-position. However, the organometallic species generated by such a "meta metalation" are thermodynamically less stab ...
In the mid-1980s, the concept emerged of a new (third) generation of synchrotron light sources, characterized by unprecedented levels of brightness-and marking a clear departure from the performances of traditional X-ray sources. This project became realit ...
The indium desorption rates from InGaAs and InAlAs grown on InP substrates have been measured by wedge transmission electron microscopy as a function of the growth temperature. Desorption becomes significant at 545-degrees-C for both materials. No automatc ...
