Hromkovif, J., S.A. Loikin, A.I. Rybko, A.A. Sapoienko and N.A. Skalikova, Lower bounds on the area complexity of Boolean circuits, Theoretical Computer Science 97 (1992) 2855300. The layout area of Boolean circuits is considered as a complexity measure of Boolean functions. Introducing the communication complexity of Boolean circuits and proving that this communication complexity squared provi...

UNLABELLED We examined the dose from 99mTc contained in syringes and shielded vials to assess in detail the dose burdens in a central pharmacy. METHODS Absorbed-dose rates at the end of the plunger of a shielded syringe, when 99mTc is contained either in the syringe or in a shielded vial from which the activity would be drawn, were measured with CaF2 dosimeters. The dose rates also were calcu...

introduction: hemangiomas are the most frequent benign tumors of the liver and detecting them from metastasis or other malignant hepatic tumors is of outmost importance. 99mtc- rbc scan is highly specific and is the method of choice for this differentiation. this scintigraphy is performed in planar and spect modes. these two procedures are in agreement most of the times, however since spect is ...

A new analytical approach is used in the design of disc-like gradient coils suitable for magnet geometries with main field direction perpendicular to the surface of the disc. An inverse procedure is used to optimize the coil's characteristics, subject to the restrictions imposed by the desired field behavior over a certain set of constraint points inside a predetermined imaging volume. Excellen...

In this paper, ultrahigh-Q factor racetrack microring resonators (MRRs) are demonstrated based on silica planar lightwave circuits (PLCs) platform. A loaded Qload of 1.83 × 106 is obtained. The MRRs packaged with fiber-to-fiber loss ~5 dB. notch depth 3 dB and ~137 pm FSR observed. These show great potential in optical communications as filters. Moreover, the devices suitable used monolithic in...

this paper is dedicated to propose an algorithm in order to generate the certain isomers of some well-known fullerene bases. furthermore, we enlist the bipartite edge frustration correlated with some of symmetrically distinct innite families of fullerenes generated by the oered process.

In this work, the development and validation of a methodology for robotic welding with covered electrodes (SMAW) using a variation of the tool center point (TCP) model is shown. The covered electrode becomes part of the kinematic model of the robot as an additional prismatic joint, whose movement is determined by the electrode consumption or melting rate. This allows programming the trajectory ...