Usefulness of systemic 30inflammatory response 25syndrome criteria as an 20index for prognosis ia judgement 2 10-5-Veterinary Record (2002)
The clarity of the trace testifies to the accuracy and stability of the apparatus. A test was also carried out on a non-inductive circuit carrying alternating current. With a supply voltage of 250 V. r.m.s. it was found that current interception could be secured at a current peak up to 300 mA. There was no difficulty in maintaining a steady break at a zero of current up to a r.m.s. current of I A. A discussion upon contact material, suppression of the arc, etc. will be found in referenceb) in the bibliography. APPLICATIONSExamples have been given of the recording of rapid 50 cis transients by means of this apparatus. At the other end of the scale, the recording of current surges in incandescent lighting loads, when a considerable time must be allowed for the lamps to heat and cool, may also be carried out. The apparatus has also a possible application in the production of very low frequency square waves to a high degree of precision. As at present in use by the authors, it has a lower switching frequency of 40 timesimin. (which can readily be reduced by slight modification to the multivibrator circuit) and an upper switching frequency of 12.5 times/sec. The duration of the on or off condition may be reduced to 3% sec. independently of the switching frequency. There is no reason why currents alternating at frequencies greater than 50 cis should not be switched but, assuming constant relay errors, the accuracy will fall proportionately as the frequency is raised. CONCLUSIONThe authors believe that this apparatus will be a valuable tool for research into the transient effects occurring in non-linear networks. It can be shown that the effect of such transients in circuits containing current transformers is to reduce permanently the accuracy of the transformer until, by some means, the resulting polarization of the magnetic core has been removed. It is believed that this effect results in 'through fault instability' in protection systems for power networks employing current transformers, and it is the authors' immediate object to use the apparatus described here to record the results of such transients using small current transformers as models of those used in power engineering. REFERENCES ( I ) SKILLING, H. H. ABSTRACT.A simple electrical viscometer has been designed enabling instantaneous indications of viscosities of liquids at any point in an industrial plant. The transmitter unit consists of a twophase electric motor operated from single-phase mains and SO designed and constructed that large variations of current in one phase are produced by small changes in viscous drag on the rotating part. The indicator unit is essentially an ammeter in one of the motor phases and is directly calibrated in viscosity units. Models have been designed for operation within pipe lines and containers up to high pressures and high temperatures (about 250' C.) and for rapid testing of samples. INTRODUCTIONFor some years now there has been a demand for a viscometer to indicate directly and continuously, without the necessity of taking...
In this paper, we propose the application of novel ultrasonic cleaning equipment using a waveguide mode, which we called the Megatube, to post chemical mechanical planarization (CMP) cleaning. Waveguides can be created in a curved shape, and ultrasonic waves of 1 MHz, within the megasonic frequency range, can propagate along such waveguides. It is possible to supply ultrasonic waves at a distance from the equipment, which has the advantage of enabling ultrasonic emission in a narrow space. For single-wafer processing, this technique has the advantage of removing particles, known as slurry residues, from both the front and back sides of the wafer by exposure to ultrasonic waves of megasonic frequency. In the Megatube, cavitation is generated by controlling the input power and the dissolved gas concentration. Particle removal efficiency (PRE) using the Megatube was evaluated for various input powers, waveguide tube lengths, and concentrations of dissolved gas in a cleaning solution.
We present a gauge-invariant and non-perturbative construction of the Glashow-Weinberg-Salam model on the lattice, based on the lattice Dirac operator satisfying the Ginsparg-Wilson relation. Our construction covers all SU(2) topological sectors with vanishing U(1) magnetic flux and would be usable for a description of the baryon number non-conservation. In infinite volume, it provides a gauge-invariant regularization of the electroweak theory to all orders of perturbation theory. First we formulate the reconstruction theorem which asserts that if there exists a set of local currents satisfying cetain properties, it is possible to reconstruct the fermion measure which depends smoothly on the gauge fields and fulfills the fundamental requirements such as locality,gauge-invariance and lattice symmetries. Then we give a closed formula of the local currents required for the reconstruction theorem. JHEP05(2008)095suggested by 't Hooft's anomaly matching condition [5] and so on. Unfortunately, very little is known so far about the actual behavior of chiral gauge theories beyond perturbation theory. It is desirable to develop a formulation to study the non-perturbative aspect of chiral gauge theories.Despite the well-known problem of the species doubling [6 -9], lattice gauge theory can now provide a framework for non-perturbative formulation of chiral gauge theories. The clue to this development is the construction of local and gauge-covariant lattice Dirac operators satisfying the Ginsparg-Wilson relation [10 -15]. By this relation, it is possible to realize an exact chiral symmetry on the lattice [16], without the species doubling problem. It is also possible to introduce Weyl fermions on the lattice and this opens the possibility to formulate anomaly-free chiral lattice gauge theories [17 -29]. In the case of U(1) chiral gauge theories, Lüscher [18] proved rigorously that it is possible to construct the fermion path-integral measure which depends smoothly on the gauge field and fulfills the fundamental requirements such as locality, gauge-invariance and lattice symmetries. Although it is believed that a chiral gauge theory is a difficult case for numerical simulations because the effective action induced by Weyl fermions has a non-zero imaginary part, it would be still interesting and even useful to develop a formulation of chiral lattice gauge theories by which one can work out fermionic observables numerically as the functions of link field with exact gauge invariance. 1 In this article, we construct the SU(2) × U(1) chiral gauge theory of the Glashow-Weinberg-Salam model on the lattice, keeping the exact gauge invariance. As in the case of U(1) theories, we first formulate the reconstruction theorem which asserts that if there exists a set of local currents satisfying cetain properties, it is possible to reconstruct the chiral fermion measure which depends smoothly on the gauge field and fulfills the fundamental requirements such as locality, 2 gauge-invariance and lattice symmetries. 3 We then give a closed expr...
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