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query stringlengths 1 13.4k | pos stringlengths 1 61k | neg stringlengths 1 63.9k | query_lang stringclasses 147
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Electrochemical Characteristics of Pure Titanium Produced by MIM (Metal Injection Molding) Process | Two kinds of pure titanium specimens, i.e., the first one is prepared by the ingot metallurgy (I/M) process and the second one is prepared by the metal injection molding (MIM) process were used in this experiment, and their corrosion behavior under stress has been investigated in several aqueous solutions by Slow Strai... | Abstract A soft X-ray pulse height analyzer has been designed and installed on the J-TEXT tokamak for measuring the electron temperature and possibly for monitoring the impurity content and concentration. A multi-channel analyzer, a set of amplifiers, and three silicon drift detectors constitute the detection system. A... | eng_Latn | 10,100 |
Deep overpressure gas accumulation | The Kela-2 gas field in the Kuqa Depression of the Tarim Basin is one of the greatest fields recently discovered in the deep overpressure reservoir in the world. The play conditions of Kela-2 field and Ya21-1 structure features in the Qiongdongnan Basin on the South China Sea shelf has been studied, and a gas accumulat... | Preface Bose-Einstein Condensation in Nonlinear System New Aspects of Relaxation Processes in Cryogenic Solids Induction Transformer Coupled Discharges: Investigation & Application P-Type InGaAs/AlGaAs Quantum Well Structures for Infrared Photodetection A D-3He Spherical Tokamak Reactor with the Plasma Current Ramp-Up ... | eng_Latn | 10,101 |
A new extraction method of retention time from the leakage current in 0.23 /spl mu/m DRAM memory cell | The retention time distributions of DRAM memory cell with 0.23 /spl mu/m design rule and STI (Shallow Trench Isolation) have been investigated for several process splits that are designed to increase the retention time. A new extraction method of retention time in memory cell is proposed from the cell leakage current b... | In order to investigate the production of plasma with simultaneous high density ::: and high degree of ionisation and to study laser-plasma energy transport, ::: experiments have been undertaken to measure the plasma electron densities formed ::: in a thin layer of aluminium buried below an overlay of plastic when the ... | eng_Latn | 10,102 |
Observation of the polarization in reaction π−→ηn at 40 GeV/c | The preliminary results of polarization measurements in reaction π−+p→η+n at 40 GeV/c for the 4‐momentum transfers up to 1 (GeV/c)2 are presented. Averaged blue of the polarization in the t‐range 0,5<‖t‖<1 (GeV/c)2 is −(24±8)%. The presented data are in a contraction with existant Regge model predictions. | The published cross sections of 232Th, 233U, 234U, 235U, 236U, 237Np, 238U, 239Pu, 240Pu, 241Pu, and 242Pu from 1 keV to 10 MeV have been carefully studied to select best cross sections for fast re... | eng_Latn | 10,103 |
Muon ring images with an atmospheric Čerenkov telescope | High energy muons generated by air showers can be detected with atmospheric Cerenkov imaging telescopes via their ring signature. The distribution of Cerenkov light along the ring is a function only of the muon's distance of impact from the telescope: this property makes possible the calibration of the photon collectio... | Using a pump-probe Michelson experiment, we test the theory of thermo-optic (TO) effects in dielectric mirror coatings. We observe partial cancellation between coating expansion and TO effects. We also measure relevant thin film material parameters. | eng_Latn | 10,104 |
Possible Existence of Bound Neutral Nuclei | Abstract The observation of 72Zn in a 100 g Zn sample located near a 10 cm W target irradiated by 24 GeV protons is taken as tentative evidence for the production of bound neutral nuclei, with an unknown mass of possibly 5 to 9, formed by fragmentation of the W nuclei and yielding 72Zn nuclei through a compound ( A n ,... | In this paper, we consider the density-dependent incompressible Navier–Stokes equations in with linearly growing initial velocity at infinity. We obtain a blow-up criterion and global well-posedness of the two-dimensional system. It generalized the local well-posedness results due to the recent work by the first and th... | eng_Latn | 10,105 |
Solid state detection means of electronic nose | A method for analysis of a solid substance by heating a sample, characterized in that the sample is pyrolyzed by heating, the pyrolysis gases are analyzed by directly registering, parallel-operated sensors in their time characteristic and the substance is characterized by this course of time. | We discuss the relation between the observed CC, ES, and NC fluxes with the flavor fractional content of the solar neutrino flux seen by SNO. By using existing estimates of the cross sections for the charged and neutral current reactions which take into account the detector resolution, we show how the forthcoming SNO r... | eng_Latn | 10,106 |
State-to-state photoionization of VO : propensity for large, positive changes in rotational quantum number | State‐to‐state threshold photoionization cross sections from specific spin–rotation levels N’=7, J’=8.5, v’=3 of C 4∑− VO to specific levels N+J+ of X 3∑− VO+ show a remarkable propensity for large, positive ΔN. Observed transitions span the ranges ΔN=−5 to +7 and ΔJ=−5.5 to +4.5. The adiabatic ionization potential of ... | We consider the cross area of the PP_ and PSV_wave window as the best window for joint PP_ and PSV_wave acquisition in VTI media. Within the effective window, the PP_ and PSV_wave's raypathes and phase angles at all reflection points are calculated, and the reflection (or transmission) coefficients' ratios of PSV- to P... | eng_Latn | 10,107 |
A Spatial Limited Angle Model for Computerized Tomography | The following results settle the basis for a fast inversion formula for a spatial, limited angle, X-ray CT model. Let E be a finite set and let R⊂2E be a family of subsets of E. Given any PЄE, let H P ={rЄR PЄr} denote the pen of elements of R passing through P. | Abstract A prototype of a new CsI(Tl) telescope, which will be used in the reaction studies of light isotopes with energy of several hundred AMeV, was constructed and tested at the Institute of Modern Physics, Chinese Academy of Sciences. The telescope has a multi-layer structure, and the range information was obtained... | eng_Latn | 10,108 |
Resonances inAl27+ p forEp=3.1–3.6MeV | With the use of Ge(Li) detectors for gamma ray yield measurements, several resonances were located in proton-induced reactions on a /sup 27/Al target for bombarding energies of E/sub p/ = 3.1--3.6 MeV (E/sub x/ = 14.62--15.04 MeV in /sup 28/Si). Decay modes of the resonances were determined. | Abstract : The interaction parameter, B, of moving dislocations with electrons and with phonons in aluminum was determined in the temperature range 10 degrees K to 250 degrees K. A new technique was developed for measuring ultrasonic attenuation changes, the change in alpha, as a function of a dynamic bias stress. The ... | eng_Latn | 10,109 |
Fontaine used his plasmid-enhanced army to attack Ryan but appeared to die in the battle , allowing Ryan to seize his assets including the Little Sisters . | Ryan seized control of Fontaine 's plasmid business . | Therefore the finders , led by Geraint Jones of the Cassini MIMI team , argue that the decrease of electrons must be caused by solid particles orbiting Rhea : The simplest explanation for the symmetrical punctuations in plasma flow are `` extended arcs or rings of material '' orbiting Rhea in its equatorial plane . | eng_Latn | 10,110 |
X-ray fireworks could signal supernovae | NASA astronomers last month detected two X-ray blasts and an almost-gamma ray burst that could be signs of imminent supernovae. The X-ray flashes came on 12 and 16 September, followed on 24 September by something | Engineers at Japan's NHK have demonstrated progress on Super Hi-Vision, a future replacement for today's HDTV systems. | eng_Latn | 10,111 |
Period differences between X-ray and very high energy gamma-ray observations of accreting X-ray pulsars | Very high energy pulsed gamma-rays have been reported from several accreting X-ray binaries. A model is considered here which gives efficient gamma-ray production in 1000-second bursts and period differences of the observed magnitude. The key feature is acceleration of ultrahigh energy particles through the inner accre... | We consider the cross area of the PP_ and PSV_wave window as the best window for joint PP_ and PSV_wave acquisition in VTI media. Within the effective window, the PP_ and PSV_wave's raypathes and phase angles at all reflection points are calculated, and the reflection (or transmission) coefficients' ratios of PSV- to P... | eng_Latn | 10,112 |
Hot-electron energy deposition around unsupported laser targets | Free‐falling spheres, released by a simple mechanism, are used as laser targets. Hot‐electron energy transport upon one‐sided irradiation with 300‐ps iodine laser pulses (6×1015 W cm−2) is studied by various methods, including x‐ray pinhole photography and time‐resolved shadowgraphy. Spatial energy deposition is consis... | The effects of virtual leptoquarks on various polarized asymmetries, as well as the charge asymmetry, at HERA are studied. The authors present the areas of parameter space that can be excluded by HERA. Generally, HERA can place a mass limit on leptoquarks that is slightly higher than {radical}s for large leptoquark-qua... | eng_Latn | 10,113 |
Charging Phenomena during Surface Analysis by Electron Spectroscopy of Insulating Materials | Charging phenomena that occur during XPS and AES analysis of insulating materials are discussed, with special focus on surface potential change by X-ray or electron beam irradiation. Some typical examples of charging phenomena observed during XPS analysis are introduced together with practical methods for charge compen... | In this paper we propose a Gaussian decomposition approach to compute the SPECT imaging system matrix. The flexibility of our method allows the implementation of a wide range of imaging systems. With the system matrix, we predict the variance in reconstructed images using the Fisher information matrix and local block c... | eng_Latn | 10,114 |
Recombination radiation from landau states in impactionized GaAs | Recombination radiation from Landau states in impact ionized high-purity GaAs has been observed. The narrow band (∼ 3 cm−1) emission has been magnetically tuned from 80–120 cm−1, and used to observe rotational transitions in water vapor. | Abstract This paper presents investigations of the longitudinal radiative force in an electron bunch moving in an undulator (wiggler). An analytical solution is obtained for a Gaussian longitudinal bunch profile. Radiative interaction of the particles in an intense microbunch induces a correlated energy spread in the e... | eng_Latn | 10,115 |
Towards automated Virus Detection and Identification using TEM | Transmission electron microscopy (TEM) is an important virus diagnostic tool. The main drawbacks are that an expert in virus appearance in electron microscopy needs to perform the analysis at the m ... | Considering the thermal issues of sever, a thermal simulation model is built using the lumped parameter method. It finds that the high temperature areas are mainly concentrated in CPU and north bri... | eng_Latn | 10,116 |
Performance of CdTe detector in the 13–1333 keV energy range | Abstract The photopeak efficiency, peak to valley ratio and energy resolution of a 3×3×1 mm 3 CdTe detector were determined experimentally for 13–1333 keV photon energy by using polyester coated radioisotopes 241 Am, 22 Na, 54 Mn, 57 Co, 60 Co, 109 Cd, 137 Cs and 133 Ba. The data were analyzed by using PX4 from Amptek.... | The dependence of the differential cross section ${\mathrm{d}\sigma}/{\mathrm{d}p_{\perp}}$ of inclusive heavy quark production in pp and $\bar{\mathrm{p}}$p collisions on the renormalization and factorization scales is investigated. The implications of our results for experiments at TEVATRON and LHC are discussed. In ... | eng_Latn | 10,117 |
THE LEPTONIC MODEL FOR BLAZAR EMISSION | The leptonic model has become the standard method of fitting the multiwavelength spectra of blazars. In what follows we review the basic premises of the model, giving emphasis on the evolution of its key ideas and assumptions. | Simple and small laser interferometers for the Space optical systems testing are discussed. ::: Interferometer consists of a lens in front of the gas laser, flat pellicle beamsplitter, a tiny flat reference mirror, ::: and optics under test. The interferometer is not affected by displacements and the tilts of the lens,... | yue_Hant | 10,118 |
The CMS electromagnetic calorimeter overview and status report | An overview status is given of the Lead Tungstate electromagnetic calorimeter which is being developped for the CMS detector at LHC. This includes the development status of PbW0 4 crystals, the mechanical design of the calorimeter, the read-out and a brief look into results from test measurements in particle beams. | This work was supported by an EPSRC Programme Grant EP/K034529/1 and CRM was supported by a Churchill Scholarship. | eng_Latn | 10,119 |
Measurement methodology of projectors in confined environment | The intent of this paper is to describe the first stages of potentially ongoing collaborative research between the United States Naval Research Laboratory's Underwater Sound Reference Detachment (USRD) and France's DCN In genierie cenae Sud Departement Lutte Sous-Marine (DCN/SUD/DLSM). The immediate focus of this colla... | High energy muons generated by air showers can be detected with atmospheric Cerenkov imaging telescopes via their ring signature. The distribution of Cerenkov light along the ring is a function only of the muon's distance of impact from the telescope: this property makes possible the calibration of the photon collectio... | eng_Latn | 10,120 |
A Four Gap Synchrotron RF Cavity | A proposed four gap synchrotron cavity is described here. The drift tube (140° long) is rigidly supported by a reentrant conducting structure near each end. Each support structure provides two accelerating gaps. The potential across each gap is approximately the same as the potential between the drift tube and the vacu... | The authors became aware of a mistake in the data displayed in Fig. 1 and Supplementary Table 2 of the original version of the Article. Specifically, the 14C production values were printed out in the code before the conversion between the omnidirectional fluence and the flux. As a consequence, the values of the 14C pro... | kor_Hang | 10,121 |
Subpicosecond magnetization dynamics in TbCo alloys | Since the discovery of all-optical magnetization switching in rare-earth transition-metal alloys the underlying magnetization dynamics of multisublattice magnets has become a hot topic of modern magnetism. We studied the ultrafast magnetization dynamics in TbCo alloys as a function of the alloy composition and the lase... | The purpose of this study is to investigate the accuracy of dose predicted by cone convolution algorithm. This work describes an experimental verification of two dose calculation algorithms available on the Philips Pinnacle3 (version 8.0) commercial radiotherapy treatment planning system (TPS): Collapsed cone convoluti... | eng_Latn | 10,122 |
Biological Effects of Bromus Inermis Induced by Single Ion Microbeam | The article describe operating principle of the single-particle microbeam device,we implanted the SAM and RAM of embryos with a 2.0 MeV of energy and 25 μm of diameter proton microbeam at the fluence of 6×106ions.The embryos' root patterning parameters was observed in detail,such as the development of primary root and ... | Abstract : Methane-Air mixture in Argon heat bath is ignited by shock, reflected from the endwall of shock tube. Experiments are compared with numerical prediction based on Bowman's reaction scheme including Zel'dovich mechanism. Agreement between experimental density profiles and numerical prediction is very good. Met... | eng_Latn | 10,123 |
Expanding the Fluorine Chemistry of Living Systems Using Engineered Polyketide Synthase Pathways | Organofluorines represent a rapidly expanding proportion of molecules that are used in pharmaceuticals, diagnostics, agrochemicals, and materials. Despite the prevalence of fluorine in synthetic compounds, the known biological scope is limited to a single pathway that produces fluoroacetate. Here, we demonstrate that t... | Summary form only given, substantially as follows. Reviews fifteen possible model experiments on astrophysics with lasers. When a focused ultra-intense laser irradiates a high-Z material, relativistic high-energy electrons are efficiently produced, and subsequent nuclear and QED (quantum electrodynamics) phenomena are ... | eng_Latn | 10,124 |
Role of intervalley scattering in the radiative recombination in Pb1 − xEuxTe alloys (0 ≤ x ≤ 1) | Measurements of the photoluminescence from epitaxial layers of Pb1 − x Eu x Te alloys with 0 ≤ x ≤ 0.32 are carried out. It is found that the luminescence intensity decreases with increasing Eu content and, already for x as low as about 0.1, drops by more than one order of magnitude. No luminescence is observed for 0.2... | This chapter is dedicated to impulse radio as it is a very prominent form of UWB. Initially, impulse radio (IR) is introduced and generic transceiver architecture for IR is presented. Then, common and custom tailored pulse shapes for impulse radios are discussed. Various IR modulation techniques are presented and their... | eng_Latn | 10,125 |
Atomic nitrogen ion distribution and g15755 emission in the auroral ionosphere | Calculations are presented to show the night-time distribution of N+ with the incidence of an aurora. In addition, use is made of the λ3914/λ5755 intensity ratio to estimate the fraction of dissociative ionization encounters of electrons with N2 which lead to the metastable 1S state of NII. | Theoretical barograms have been calculated for acoustic-gravity waves ::: generated by underground explosions. Two formulations were used. 1) The ::: thermally modeled gravitating atmosphere is excited by a time varying deformation of the earth's surface. The final deformation is the static ::: surface displacement due... | eng_Latn | 10,126 |
X-ray powerful diagnostics for highly-ionized plasmas: He-like ions | The calculations of the ratios of the Helium-like ion X-ray lines from C V to Si XIII are revisited in order to apply the results to density, temperature and ionization process diagnostics of data from high-resolution spectroscopy of the new generation of X-ray satellites: Chandra and XMM-Newton. Comparing to earlier c... | Abstract We have explored the radiolytic action of the analyzing 15 N beam on thick samples of hydrogenated carbon. The exposure induced a reduction of the Doppler width compatible with the destruction of carbon-hydrogen bonds and the formation of molecular hydrogen. | eng_Latn | 10,127 |
High precision time delay estimation using generalised mvdr cross spectrum | A high precision time delay estimation method is proposed based on the minimum variance distortionless response (MVDR) cross spectrum. The time delay between two sensor signals is estimated from the phase of the MVDR spectrum without maximum searching. Simulation results show the performance improvements of the propose... | Abstract We have designed, constructed and installed a system that makes an accurate 3D map of the electron drift velocity and measures the space-charge distorting effects in the TPCs of the DELPHI Barrel RICH detector. Details of the design considerations, construction and production are given. | eng_Latn | 10,128 |
Research of Electromagnetic Shielding Material for Building | Electromagnetic shielding material is the material basis for the realization of electromagnetic shielding.The properties and characters,the study and application of several kinds of common electromagnetic shielding materials for building are introduced in this paper,and the development direction of these materials is p... | Abstract Calculations employing the simple Monte Carlo model of gamma-ray interaction in a silicon ΔE -detector provide a very reliable energy spectrum of Compton-scattered electrons. This makes it possible to determine the thickness of a Si ΔE -detector with a good accuracy. | eng_Latn | 10,129 |
Evaluation of High Stability Secondary Emission Monitors | A stable, remotely operated low scattering (? = 0.246 mrad) secondary emission monitor (SEM) which was developed at Argonne National Laboratory (ANL) is described. Experimental results for secondary yield vs. energy of incident protons of 3.6 GeV/c to 12.33 GeV/c indicate that the yield increase is about 0.03%/GeV/c/A1... | Carbon-13 nuclear magnetic resonance studies were made on mouse hemoglobin specifically labeled at the C-2 histidine position. Measurement of the spin lattice relaxation times of the label before and after hemolysis of the erythrocytes provides information on the intracellular fluid viscosities. | eng_Latn | 10,130 |
Transplantation of nuclei into the polar plasm of Drosophila eggs. | Nuclei of preblastoderm and blastoderm stages of yw strain of Drosophila melanogaster were transplanted into posterior ends of fertilized eggs of the v; bw strain. Several mosaics were obtained, including gynandromorphs with external genitalia of the donor's type. One mosaic was fertile, with gonads derived from the tr... | Summary form only given, substantially as follows. Reviews fifteen possible model experiments on astrophysics with lasers. When a focused ultra-intense laser irradiates a high-Z material, relativistic high-energy electrons are efficiently produced, and subsequent nuclear and QED (quantum electrodynamics) phenomena are ... | eng_Latn | 10,131 |
Protein translocation pathways of the mitochondrion | The biogenesis of mitochondria depends on the coordinated import of precursor proteins from the cytosol coupled with the export of mitochondrially coded proteins from the matrix to the inner membrane. The mitochondria contain an elaborate network of protein translocases in the outer and inner membrane along with a batt... | In order to comply with the special challenges (open 4f-shell, configuration mixing) of simulating the spectrum of W23+ an extensive atomic model was implemented using the flexible atomic code (FAC). In detail, the basis functions from 11 configurations were used to model about 12000 levels, which give rise to roughly ... | eng_Latn | 10,132 |
Hot-electron blast induced by ultrashort-pulsed lasers in layered media | Femtosecond laser heating on metals produces a blasting force in the sub-picosecond domain, which exerts on the metal lattices along with the non-equilibrium heat flow from hot electrons. Such a hot-electron blast depends on both temperature and temperature gradient in the electron gas, resulting in pronounced effects ... | We present a systematic study of production of strange and non-strange hadron yields and their ratios obtained in various experiments using our thermodynamically consistent excluded-volume model. We also analyze the production of light nuclei, hypernuclei and their antinuclei in terms of our excluded-volume model over ... | eng_Latn | 10,133 |
SASE based 4/sup th/ generation light sources and the LCLS project | Advances in the physics and technology of photoinjectors, linear accelerators, insertion devices and free-electron lasers make it now possible to generate coherent radiation in the X-ray region by means of the Self-Amplified-Spontaneous-Emission (SASE) process. This radiation has much higher brightness, shorter pulses ... | In order to solve the link assignment problem in GNSS constellation, which is affected by the performance of dynamic topology, the method of Finite Time Slot (FTS) is proposed for GNSS constellation in this paper. Firstly, we model a GNSS constellation network as a FTS, where each time slot corresponds to an equal-leng... | eng_Latn | 10,134 |
IR and Raman Spectroscopies, The Study of Art Works☆ | The applications of vibrational spectroscopic techniques to art are addressed in this article. Several examples are taken to illustrate the role that FT-IR and FT-Raman can play in the analysis of artistic samples such as the characterization of genuine and fake artefacts, information for strategic restoration of artwo... | Abstract We have developed image analysis software to facilitate the analysis of optical-transition radiation (OTR) patterns generated by the electron beam from the Los Alamos free-electron laser facility. The software can be used for beam alignment, beam profile and angular divergence measurements, and the programs ru... | eng_Latn | 10,135 |
Self-folding printable elastic electric devices: Resistor, capacitor, and inductor | This paper presents a methodology and validation of print-and-self-fold electric devices. For printing functional structures for robotic use, we realize electric circuitry based on metallic polyester film (MPF). By exploiting the unique material properties of MPF, we developed fundamental electric devices, namely a res... | Abstract This paper presents investigations of the longitudinal radiative force in an electron bunch moving in an undulator (wiggler). An analytical solution is obtained for a Gaussian longitudinal bunch profile. Radiative interaction of the particles in an intense microbunch induces a correlated energy spread in the e... | eng_Latn | 10,136 |
Spectra of the high Tc cuprates understood by the variational studies of the t–J-type models | Trial wavefunctions with and without antiferromagnetic order for the 2-dimensional t–J-type model are proposed to describe the low-energy states of high Tc cuprates with doped holes or electrons. In the slightly doping regime, we found states behaving like charged quasi-particles with well-defined momenta and having mu... | We consider the cross area of the PP_ and PSV_wave window as the best window for joint PP_ and PSV_wave acquisition in VTI media. Within the effective window, the PP_ and PSV_wave's raypathes and phase angles at all reflection points are calculated, and the reflection (or transmission) coefficients' ratios of PSV- to P... | eng_Latn | 10,137 |
Determination of β-SPN content in sodium thiocyanate solution | A method for determining β-SPN content in recoverable sodium thiocyanate solution is proposed based on molecule structure and property of cyanoethyl sodium sulfonate(β-SPN).In the experiment,NaOH is used as titrant,methyl red is used as inindicator.The linear relationship between the mass of sample and the volume diffe... | NSRRC has been operating a 1.5 GeV synchrotron light source, the Taiwan Light Source (TLS), for over 15 years and has established a large user community. For the future development of synchrotron radiation research in Taiwan, a feasibility study report to construct a 3.0 GeV low‐emittance storage ring, the Taiwan Photo... | eng_Latn | 10,138 |
Conference on Electron Microscopy - Nottingham, July 1961 | The annual conference of the Electron Microscopy Group of the Institute of Physics and the Physical Society was held in the Department of Chemistry, the University of Nottingham, from 10th to 14th July 1961. A general account of the proceedings is given. | Pilots of No. 62 Squadron. L to R O. B. Fenton, S. Parry, and Boyce H. Cachy in March 1918 in France. Image displayed (72 dpi JPEG), Master image (600 dpi TIFF). | eng_Latn | 10,139 |
Beam-plasma interactions in a positive ion-negative ion plasma | An electron‐free plasma consisting of negative ions (SF6 −) and positive ions (Ar+), and negligible neutral‐ion collision frequencies has been created in the laboratory. This plasma has a mass ratio of approximately 3.5‐similar to many computer particle‐in‐cell simulated systems. A fluid description of this positive an... | Measurements performed at the Tevatron of both the like-sign dimuon charge asymmetry inBd;s-meson samples and the mixing-induced CP asymmetry inBs! J= depart from their standard model (SM) predictions. This could be an indication for new CP phases in B = 2 transitions, preferentially in Bs{ Bs mixing. The experimental ... | eng_Latn | 10,140 |
A two-colour photoelectric investigation of the eclipsing binary system AG Persei | The detached eclipsing binary system AG Per was observed at Ege University Observatory on 12 nights from December 1974 to December 1975. Approximately 460 observations were obtained in each yellow and blue. AG Per has long been known to have an apsidal motion and eccentricities. New apsidal motion parameters based on t... | Abstract : A simulation was performed to predict the thermal behavior of a commercial power module with silicon insulated gate bipolar transistors (IGBTs) during switching of multiple power pulses. | eng_Latn | 10,141 |
Temperature dependence of the electron spin resonance spectra of a coal-derived vacuum distillation residue and components | Measurements of the intensities of the electron spin resonance (ESR) absorptions, in the g approx. 2 region of the spectrum, of the title materials were performed over a wide range of temperatures. Linear correlations of the measured intensities vs. the reciprocal of the absolute temperature were obtained. The regressi... | Photoelectric conversion efficiency is a important capability parameter for Industry CT Detectors in Low energy.I have analyzed the effect of some common scintillating crystals' parameter such as efficiency,dimension and to Photoelectric conversion efficiency.And compared their Photoelectric conversion efficiency of Cs... | eng_Latn | 10,142 |
Optical potentials in ion‐atom collisions | The time dependent extension of the Feshbach formalism allows the formulation of a set of nonunitary coupled channel equations in a given finite model space based on the assumption that consecutive interactions occur simultaneously. For a variety of collision systems we demonstrate that a microscopic optical potential ... | The technique for indirect shielding of the eye situated within the irradiation field during telecobalt therapy is reported by using demonstrations of isodoses. The dose at the lens is approximately 10% of the maximum dose measured at electron equilibrium. Thls dose does not depend upon the arrangement of the shielding... | eng_Latn | 10,143 |
Acoustic Wave Propagation in a Gas Discharge | When ordinary sound propagates in a weakly ionized gas, the wave motion of neutral particles controls that of charge carriers. The ion‐density, electric‐field, and electron‐temperature responses to a given gas‐density perturbation are calculated by means of linearized hydrodynamic equations for the case of wave propaga... | We have acquired in vivo photoacoustic images of gastrointestinal tracts in rats using recently developed clinical photoacoustic/ultrasound imaging system. The result can be used to investigate motility of gastrointestinal tracts in clinical studies. | eng_Latn | 10,144 |
Modeling asymmetric beams using higher-order phase-space moments | Shadwick et al. developed [Commun. Nonlinear. Sci. Numer. Simulat. 17, 2153-2160 (2012)] a self-consistent model of beam transport using a phase-space moment description (up to 2nd order) based on the Vlasov-Maxwell Hamiltonian structure. Tzoufras et al. have shown [Physics of Plasmas 16, 056705 (2009)] that for a lase... | To solve the question that output voltage can not adjusting of the permanent magnet synchronous machine(PMSM),a kind of new type machine-the paratactic structure hybrid excitation synchronous machine(HESM) is introduced,its structure and working principle is described,and its equivalent magnetism circuit is analyzed,th... | eng_Latn | 10,145 |
Microstructural investigations of 800 keV Ar ions irradiated nanocrystalline ZrN thin films | ABSTRACTThe effect of 800 keV Ar ion irradiation on the microstructure and composition of ZrN films grown by pulsed laser deposition technique was investigated. Grazing incidence and symmetrical X-... | A near-field millimeter-wave exposure system configuration allowing cell culture exposures at 60 GHz is proposed and characterized. The design was optimized to obtain relatively homogeneous distribution of the specific absorption rate (SAR) within the cell layer for the incident power densities ranging from 0 up to 67 ... | eng_Latn | 10,146 |
Dielectric barrier discharge plasma atomizer for hydride generation atomic absorption spectrometry—Performance evaluation for selenium☆ | Abstract Atomization of selenium hydride in a quartz dielectric barrier discharge (DBD) atomizer was optimized and its performance was compared to that of the externally heated quartz multiatomizer. Argon was found as the best DBD discharge gas employing a flow rate of 75 ml min − 1 Ar while the DBD power was optimized... | One embodiment of the invention includes a method comprising the step of transferring the heat from the group electrolytic step with the PV array to transfer groups deliver the power produced by the PV array. The process according to the result will be to produce more reproducible from solar energy at a lower cost per ... | eng_Latn | 10,147 |
Optical simulation model for flat mirror concentrators | Different simulation models for solar concentrators were developed to obtain the irradiance distribution on the absorber. Usually these optical simulations were valid only for a particular concentrator. Other simulations adequate for different concentrator shapes are based on ray tracing algorithms requiring high compu... | In this investigation we consider a semiclassical fully ionized plasma in which interparticle interactions are treated by means of an effective potential taking into account both quantum and correlation effects. An expression for the dielectric function corresponding to the generalized Drude–Lorentz formula is obtained... | eng_Latn | 10,148 |
Testing various polarized parton distributions at RHIC | Abstract A very promising spin physics programme will be soon on the way at the BNL Relativistic Heavy Ion Collider (RHIC). By studying the spin asymmetries for various processes (single photon, single jet and W ± production), we will compare the different predictions obtained using some sets of polarized parton distri... | We consider the cross area of the PP_ and PSV_wave window as the best window for joint PP_ and PSV_wave acquisition in VTI media. Within the effective window, the PP_ and PSV_wave's raypathes and phase angles at all reflection points are calculated, and the reflection (or transmission) coefficients' ratios of PSV- to P... | eng_Latn | 10,149 |
Early Days in the X-Ray Crystallography | Reminiscences are given out of the early stages of the development in x-ray crystallography, both in Japan and abroad. Activities in Prof. Ewald's school in Germany, those of Prof. Bragg's in England, Prof. Terada's and Nishikawa's in Japan are described.Prof. Nishikawa's contribution concerning the space group theory ... | Sony ICX 259AL CCD matrices were irradiated by proton and neutron beams of a synchrocyclotron of the Petersburg Nuclear Physics Institute. The data on production cross sections, as well as the spatial and time distributions of pixels of the irradiated matrices with high dark current, are presented. The experimental dat... | eng_Latn | 10,150 |
Multimode quantum properties of a self-imaging OPO: squeezed vacuum and EPR beams generation | We investigate the spatial quantum properties of the light emitted by a perfectly spatially degenerate optical parametric oscillator (self-imaging OPO). We show that this device produces local squeezing for areas bigger than a coherence are that depends on the crystal length and pump width. Furthermore, it generates lo... | The superluminal radio components observed in microquasars are usuallyinterpreted as individual ejection events. We discuss some of theshortcomings of this model and propose the internal shock model inquasi-continuous relativistic jets as an alternative. This model canresolve the problems with the single ejection model... | eng_Latn | 10,151 |
Seismic Scaling of Explosive Source Functions Using Teleseismic P Waves | Abstract : Short period P waves of four presumed Soviet explosions from Eastern Kazakh are examined at five teleseismic arrays: LASA, YKA, OONW, WRA and GBA. Transfer functions to shape the lower magnitude to the highest magnitude event were computed at each array to eliminate transmission path effects from source to r... | A new Ti:sapphire chirped pulse amplification system was established with three stage amplifiers. Pumping the final amplifier with a 100 J doubled-frequency Nd:glass laser, we generated stable 355 TW laser pulses at duration of 31 f s. | kor_Hang | 10,152 |
A simple method for determination of ratio error and phase angle in current transformers | Discussion and author's closure of paper 41–109 by E. C. Wentz, presented at the AIEE summer convention, Toronto, Ontario, Can., June 16–20, 1941, and published in AIEE TRANSACTIONS, 1941 (October section), pages 949–54. | Abstract We have developed image analysis software to facilitate the analysis of optical-transition radiation (OTR) patterns generated by the electron beam from the Los Alamos free-electron laser facility. The software can be used for beam alignment, beam profile and angular divergence measurements, and the programs ru... | eng_Latn | 10,153 |
Atomic-Molecular Ionization by Electron Scattering: Theory and Applications | A comprehensive and up-to-date text in the field of electron scattering and ionization, covering fundamentals, experimental background, quantum scattering theories and applications. Electron impact ionization of atoms and molecules in ground/metastable states is discussed comprehensively. The text covers electron scatt... | To understand better the spread of ash from volcanic eruptions penetrating into the stratosphere, laboratory experiments are performed using a recently developed light attenuation technique to measure the deposit of sediments from a particle-bearing plume rising in stratified fluid. The results are used to calibrate an... | eng_Latn | 10,154 |
Detection of high-altitude explosions by observation of air fluorescence | X-rays radiated from a nuclear explosion in space excite fluorescence of air molecules in the upper atmosphere. The fluorescence has a characteristic space-time signature which can be recognized from the ground even against a bright daylight sky. The criteria determining detectability and range are discussed, along wit... | A comparison of density fluctuation, estimated from the different equations, has been done. It was shown that density fluctuation can be calculated from the values of the volume of a fluctuational free volume minimum hole. The concentration fluctuation can be calculated from the structural characteristics of amorphous ... | eng_Latn | 10,155 |
Fine structure in 14C cluster emission from 225Ac | A fine structure in the 14C decay of 225Ac is predicted quantitatively by accounting dynamical aspects during the disintegration process. Transitions to the excited states of the daughter nucleus are considered to be mainly directed by the Landau–Zener promotion mechanism in the region of avoided crossing levels. The l... | An analysis of the August 20, 2002 flare using RHESSI, Hα, and radio observations is presented. Radio data in the decimetric frequency range showed a type IIId (relativistic) burst at the time of the X-ray maximum. At this time a very flat (γphot = 1.8) X-ray spectrum was measured. Fitted double power-law spectra in th... | eng_Latn | 10,156 |
Opportunities and problems in determining proton and light nuclear radii | We briefly review the so-called ‘proton puzzle’, i.e., the disagreement of the newly extracted value of the proton charge radius r p from muonic hydrogen spectroscopy with other extractions, its possible significance and related problems. After describing the conventional theory to extract the proton radius from atomic... | Background ::: A lack of consistent methods to evaluate Ki67 expression is problematic in terms of accurately predicting prognosis in breast cancer. Accordingly, this study aimed to identify the causes of discrepancies in Ki67 labeling index measurements by different observers under different conditions using breast ca... | eng_Latn | 10,157 |
Refinements of the One-Dimensional FEL Theory | The realistic description of FELs operating in the high-gain regime has to be based on a three-dimensional theory. The dependencies of the electron beam current density and of the light wave on the transverse coordinates x and y must be taken into account. Betatron oscillations of the electrons and diffraction of the l... | The design of optimal decentralized detectors requires simultaneous optimization both of quantizer mappings for the individual sensors and of the global fusion rule. It is shown that if the likelihood ratios of the unquantized (or raw) observations contain no point-masses of probability, the optimal test does not rando... | eng_Latn | 10,158 |
Nuclear Bragg Diffraction of Synchrotron Radiation at the 8.41 keV Resonance of Thulium | For the first time nuclear Bragg diffraction of synchrotron radiation at the 8.41 keV resonance of 169Tm was observed. Time differential measurements were performed with the pure nuclear (424) reflection of a thulium iron garnet single crystal. The dynamical theory of Mossbauer optics is applied to evaluate the time sp... | Several studies for the LHC luminosity upgrade pointed out the need for low-beta quadrupoles with apertures larger than the present baseline (70 mm). In this paper we focus on the design issues of a 130 mm aperture quadrupole. We first consider the Nb-Ti option, presenting a magnetic design with the LHC dipole and quad... | eng_Latn | 10,159 |
Three particle singularities in scattering amplitudes | As a preliminary to a study of the three particle case, a detailed discussion is given, within the framework of the S-matrix postulates of unitarity and analyticity, of methods of defining “reduced” two particle scattering amplitudes that lack the two particle singularity; the extension to the multichannel case is brie... | This main objectives of this effort are the development and prototyping of a small. sensitive, and low-cost multi-channel nanoparticle scintillation microdevice with integrated waveguides for alpha, beta, gamma, and neutron detection. This research effort has integrated experiments and simulation to determine the combi... | eng_Latn | 10,160 |
Digest: Splendid (Continental) radiations | Henry Fairfield Osborn, vertebrate paleontologist and long-time president of the American Museum of Natural History in New York, once referred to adaptive radiation as “one of the essential features of divergent evolution … the idea of differentiation of habit in several directions from a primitive type … . This idea o... | The review of results on the ρ , ω , and ϕ radiative and rare hadronic decays, measured in SND and CMD-2 experiments at VEPP-2M e + e − -collider is presented. Comparison with KLOE measurements and theoretical models is given. | eng_Latn | 10,161 |
[Breast-specific gamma imaging in breast cancer]. | Breast-specific gamma imaging (BSGI) is a new technique in nuclear medicine for the diagnosis of breast cancer. After intravenous injection of the radioactive substance 99mTc-sestamibi the breasts are imaged with a gamma camera. The radionuclide assimilates into intracellular mitochondria, which are present in greater ... | A simple null charge model was employed to describe GaAs sheet resistance evolution as a function of proton implantation fluence using a previous knowledge of the irradiation created defect characteristics. In the specific case of GaAs irradiated with protons, three different irradiation related defect schemes were ana... | eng_Latn | 10,162 |
German radio observatory stockert | During the past 20 years the world has been aware of electromagnetic radiation from the universe. Numerous institutes exist in a number of countries for exploration of this radiation. The Federal Republic of Germany has now set up a radio telescope with an antenna diameter of 25 meters for research on the 21-cm radiati... | Thermal performance predictions based on test data are presented for the Alpha Solarco Model 104 solar collector, with 0.125-inch Schott low-iron glass reflector surface, for three output temperatures at five cities in the United States. | eng_Latn | 10,163 |
Improving the thermal stability of the electret properties of corona electrets based on fluoroplastic-32L | Corona electrets based on composites constituted by fluoroplastic-32L and powdered ferroelectric filler, barium titanate, were studied. It was found that introduction of a ferroelectric filler into fluoroplastic-32L improves the thermal stability of the electret properties by 30–40°. | Abstract The Project 8 experiment aims to determine the electron neutrino mass by measuring the spectrum of tritium beta decay electrons near the 18.6 keV endpoint. Unlike past tritium experiments, which used electrostatic and magnetostatic spectrometers, Project 8 will detect decay electrons nondestructively via their... | eng_Latn | 10,164 |
Linac4 low energy beam measurements with negative hydrogen ions. | Linac4, a 160 MeV normal-conducting H(-) linear accelerator, is the first step in the upgrade of the beam intensity available from the LHC proton injectors at CERN. The Linac4 Low Energy Beam Transport (LEBT) line from the pulsed 2 MHz RF driven ion source, to the 352 MHz RFQ (Radiofrequency Quadrupole) has been built ... | The dependence of the differential cross section ${\mathrm{d}\sigma}/{\mathrm{d}p_{\perp}}$ of inclusive heavy quark production in pp and $\bar{\mathrm{p}}$p collisions on the renormalization and factorization scales is investigated. The implications of our results for experiments at TEVATRON and LHC are discussed. In ... | eng_Latn | 10,165 |
Study of operating condition of semiconductors for calorimetry in LHC/SSC radiation environment | Abstract For experiments with future hadron colliders involving multi-TeV proton beams, such as the LHC and SSC, sampling calorimeters with silicon as active medium satisfy the special experimental conditions. Defect formation processes and electrical behavior of neutron irradiated p + -n ion implanted silicon detector... | Abstract Bernthsen reaction has been carried out under microwave irradiation in the presence of p-TSA (10 mol%) as catalyst in a solventless reaction to provide 9-substituted acridines. In the present report, time economy and better yields as compared to conventional Bernthsen reaction are described. | eng_Latn | 10,166 |
On possibility of effect similar to superluminality upon two-frequency interaction in medium with combined nonlinearity | A computer simulation was implemented to study a phenomenon similar to the effect of superluminality appearing upon interaction of two femtosecond pulses in a medium with combined nonlinearity under the conditions of a nonzero group velocity mismatch. The possibility of the formation of sub-pulses at the fundamental an... | The calculations of the ratios of the Helium-like ion X-ray lines from C V to Si XIII are revisited in order to apply the results to density, temperature and ionization process diagnostics of data from high-resolution spectroscopy of the new generation of X-ray satellites: Chandra and XMM-Newton. Comparing to earlier c... | eng_Latn | 10,167 |
X-Ray and HαEmission of the 20 Aug 2002 Flare* | An analysis of the August 20, 2002 flare using RHESSI, Hα, and radio observations is presented. Radio data in the decimetric frequency range showed a type IIId (relativistic) burst at the time of the X-ray maximum. At this time a very flat (γphot = 1.8) X-ray spectrum was measured. Fitted double power-law spectra in th... | A bibliography of unclassified references on removal of entrained particles from evaporator vapor streams is presented. Sources searched were Nuclear Science Abstracts, 1947 to June 1959, and Chemical Abstracts, 1946 to 1958. (J.R.D.) | eng_Latn | 10,168 |
Australian post rockers SLEEPMAKESWAVES premiere new track “To Light And Then Return” | The spareness and sense of space, as well as breathtaking cinematic experience in SLEEPMAKESWAVES work has always been remarkable, and its only getting ... | To satisfy the requirements of surface and atomic physics study in the field of low energy multiple charge state ion incident experiments, a low energy (10eV∕q–20keV∕q) ion beam platform is under design at IMP. A simple test bench has been set up to test the ion beam deceleration systems. Considering virtues such as st... | kor_Hang | 10,169 |
Experimental investigation of non LTE population redistribution in radiatively pumped plasmas | Abstract Experiments are described in which simultaneous absorption and fluorescence spectra of K-shell transitions were observed from a well characterized x-ray driven aluminium plasma. Fluorescence was caused by photopumping with the M-band x-rays from a high-Z laser produced plasma. Pump and drive spectra, ionizatio... | In our work, we consider a querying application of a Multihop Cell phone Sensor Networks (MCpSN). It requires data to be sensed within a time window and further uploaded at the Querying Access Point within a time deadline. Considering a Random Waypoint distribution of cell phone users, we propose a novel, energy-effici... | eng_Latn | 10,170 |
Interpreting tunneling time in circularly polarized strong-laser ionization | We propose a method to study the tunneling process by analyzing the time-dependent ionization yield in circularly polarized laser. A numerical calculation shows that for an atom exposed to a long laser pulse, if its initial electronic state wave function is non-spherical symmetric, the delayed phase shift of the ioniza... | A fine structure in the 14C decay of 225Ac is predicted quantitatively by accounting dynamical aspects during the disintegration process. Transitions to the excited states of the daughter nucleus are considered to be mainly directed by the Landau–Zener promotion mechanism in the region of avoided crossing levels. The l... | eng_Latn | 10,171 |
Characterization of large volume HPGe detectors. Part I: Electron and hole mobility parameterization | An analytical model for the hole mobility in a Ge crystal lattice was developed to describe the hole drift anisotropy with experimental velocity values along the crystal axis as parameters. The new model is based on the drifted Maxwellian hole distribution in Ge. It is verified by reproducing experimental longitudinal ... | This chapter contains sections titled: Introduction Identification of the Best Linear Approximation Using Random Excitations Generation of Uncertainty Bounds? Identification of the Best Linear Approximation Using Periodic Excitations Advises and Conclusions ]]> | eng_Latn | 10,172 |
Characteristic in the 0.01 GHz-2.6 GHz range of film transformer with coils on both sides of flexible polyamide film | Two meander planar thin film transformers were fabricated using microlithography on a flexible polyamide film surface. One transformer was fabricated on the same polyamide surface (single sided transformer). The other transformer had coils which were placed on either side of the polyamide surface (double sided transfor... | Abstract We propose the novel gamma-camera with a functional collimator, that has detection ability on the collimator wall surface. The gamma-ray detection sensitivity of the proposed gamma-camera is improved by a factor of 70 compared with a conventional one. Through Monte Carlo simulations, the required gamma-ray emi... | eng_Latn | 10,173 |
A transition radiation detector based on thin inorganic scintillators | The possibility of designing a prototype of the scintillation transition radiation detector (Sci-TRD) based on a thin (∼200 μm) inorganic scintillator has been investigated. Vacuum and silicon photomultipliers have been used in the measurements with inorganic scintillator samples based on LuBO3:Ce and wavelength shifti... | A low-voltage low-power transceiver for ISM applications has been presented. The sensitivity of the super-regenerative receiver is comparable to that of classical superheterodyne receivers. Frequency selectivity is sufficient for short-range wireless data transmission in the ISM frequency bands, but not good enough for... | eng_Latn | 10,174 |
Fast estimation of pulse height spectra and extraction of transport parameters for semiconductor detectors | We discuss two simple, computationally efficient methods of estimating pulse height spectra for semiconductor detectors, one based on analytical techniques and the other involving Monte Carlo simulation. The former method gives rapid insight into the impact of major material parameters on detector performance, while th... | In view of the complex process of information integration and untimely data sharing during data acquisition of small sluices, it is necessary to establish a real-time data security monitoring platform, which involves solving the data transmission problem of different types of sensors and multi-measurement points. Takin... | eng_Latn | 10,175 |
Momentum imaging of the photo double ionization of ethylene molecules: A kinematically complete experiment | The direct photo double ionization (PDI) is a process that arises essentially because of the electron correlation. We investigated the PDI of ethylene near its threshold in order to unravel unique and important intertwining of electron correlation in inter-shell and intra-shell cases and the subsequent molecular dynami... | Characteristics of the nuclear equation of state (EOS) and its importance, in particular for astrophysics, are discussed. Selected observables in nuclear collisions are sensitive to the EOS and can be used to constrain it. For central collisions, these include collective flow asymmetries, subthreshold kaon yields and i... | eng_Latn | 10,176 |
Doppler spectroscopy of a beam in the channel of a H− ion source | It is shown that high-accuracy contact-free measurements of the divergence and emittance of an accelerated H− ion beam at the exit from the source can in principle be performed by passive Doppler spectroscopy of a beam of excited hydrogen atoms produced by neutralization of the ions with excitation on the residual gas ... | The effects of virtual leptoquarks on various polarized asymmetries, as well as the charge asymmetry, at HERA are studied. The authors present the areas of parameter space that can be excluded by HERA. Generally, HERA can place a mass limit on leptoquarks that is slightly higher than {radical}s for large leptoquark-qua... | eng_Latn | 10,177 |
Investigation of charge symmetry violation in the mirror reactions 2H(d, p)3H and 2H(d, n)3He | Abstract Precision measurements of the angular distributions of the vector and the three tensor analysing powers of the mirror reactions 2 H(d, p) 3 H and 2 H(d, n) 3 He are compared betwen 1.5 and 15.5MeV incident deuteron energy. Large and complex differences are observed over the whole energy range. After applying a... | We report on ab initio coupled-cluster calculations of the interaction potential energy surface for the HCNH+–He complex. The aug-cc-pVTZ Gaussian basis, to which is added a set of bond functions placed at mid-distance between HCNH+ center of mass and He atom is used. The HCNH+ bonds length are set to their values at t... | eng_Latn | 10,178 |
A simple method of analysing alpha spectra of environmental natural uranium samples | Abstract Alpha spectrometry of natural uranium was performed using a 232 U spike. In order to calculate in an accurate manner the area corresponding to each isotope in the spectrum, it is necessary to consider the low-energy tail from higher-energy emitters and the branching-ratio corrections. To correct for the low-en... | Summary. Data do not support earlier suggestions that absorption along the path of the direct P signal relative to later arrivals is responsible for variations in the complexity of P signals from nuclear explosions. Scattering of seismic waves in the crust and upper mantle explains many aspects of the P coda and we sug... | eng_Latn | 10,179 |
Saturation of the ODMR effect on singlet exciton induced emission in molecular crystals: Application to crystalline tetracene | We have studied the variation of the ODMR effect according to the intensity of a microwave field. We have highlighted a saturation effect of ODMR lines. This effect has been studied as part of the kinetic theory by developing the pilot equation while utilizing for the first time the formalism of a superoperator coupled... | In an earlier paper by the author the problem of determining the optimum symmetrical weighting factors for a video MTI radar was discussed. This paper extends this work so as to remove the symmetrical restriction from the problem. In addition, for a staggered pulse system, optimum times of transmission are determined. ... | eng_Latn | 10,180 |
Computation of elastic constants and phonon frequencies in K-Cs melt. | Using experimental compressibility the elastic constant C 11 of the alloy has been computed. C 11 has also been computed through Schobeld's equations and the computations have been iterated with various values of the empty-core radius r c . Care, however, has been taken to ascertain that the values of r c are near the ... | Abstract Ion temperature and total ion concentration measured on 25th October 1977 during the flight of the geophysical rocket “Vertical-6” are analyzed. The solar EUV fluxes determined in five wave-length bands with a photoelectron analyzer are also given. The observed anomalous variation of ion temperature between 70... | eng_Latn | 10,181 |
Microelectronics in Military Technology | Abstract : The report is written in answer to letters from radio amateurs asking about the impact of microelectronics on military techniques. Because the electronic equipment on rockets as well as aircraft is so bulky, various methods of miniaturization must be used. These methods, including compact mounting methods, t... | We show <-50 dB AM-to-PM conversion over a wide photocurrent range in MUTC photodiodes. By controlling the AM-to-PM coefficient minimum, we generate 15 dBm microwave power with 60 dB AM rejection onto the microwave phase. | eng_Latn | 10,182 |
A SPINNING-STAGE, TOTAL ELECTRON-YIELD DETECTOR FOR THE ELIMINATION OF DIFFRACTION PEAKS IN X-RAY ABSORPTION SPECTRA | A primary problem in collecting and analyzing x-ray absorption fine structure (XAFS) from crystalline samples, including thin films grown on crystalline substrates, is the contamination of the x-ray absorption spectrum by diffraction events. To address this limitation, a total electron-yield detector equipped with a sp... | PROTECTION DEVICE FOR A TELEVISION RECEIVER INTERRUPTING SUPPLY CIRCUIT OF THE RECEIVER INCLUDING THE CIRCUIT SWEEP HORIZONTAL INCIDENT. DEVICE INCLUDING MEANS DELAY 35, 38 TO DISCONTINUE Do CIRCUIT AFTER DETECTION OF ABSENCE OF A TIME AT LEAST ONE PREDETERMINED TIME T IS REPRESENTED BY VOLTAGE TERMINAL CAPACITOR 35 SE... | yue_Hant | 10,183 |
Channelling and channelling radiation | The study of channelling phenomena has developed rapidly since the early 1960s and today channelling has found many applications. The radiation emitted by channelled megaelectronvolt and gigaelectronvolt electrons and positrons has been investigated extensively and the possibility of, for example, constructing intense ... | The transition from order to chaos in atomic nuclei has been studied analytically and numerically using a quadrupole-quadrupole residual interaction. This interaction leads to chaotic behaviour, but the critical energyEC≅12.6 MeV, corresponding to the onset of chaos, is higher than that of the experimental one. | eng_Latn | 10,184 |
Pre- and postsynaptic mechanisms of the involvement of amygdaloid complex serotonin in the reproduction of a conditioned passive avoidance response in rats | Serotonin metabolism and [3H]-serotonin radioligand receptor binding were studied in the amygdaloid complex of the rat brain at different stages of a conditioned passive avoidance response. Serotoninergic changes were specific for the process of reproduction of the conditioned response. The involvement of serotonin in ... | Abstract A simple method of compensating for the kinematic energy spread of the particles from a nuclear reaction detected in a silicon PSD is described. The technique relies on a suitable choice of the series resistor for the reaction of interest and the degree of compensation is shown to be equivalent to the first or... | eng_Latn | 10,185 |
Energetic study of focused ultrashort Gaussian beams | An energetic study of focused ultrashort Gaussian beams was carried out using the Fresnel diffraction formulae ::: in the frequency domain. Analysis of the encircled energy at the focused plane shows that diffraction spreading ::: of a focused pulsed beam occurs in the limiting case of a ultrashort pulse by comparing i... | In this article we are discussing the nature and mechanism of the huge ::: amount of heat generation in Megawatts Energy Catalyzers (E-cat) of Andrea ::: Rossi that are able to change the energetics of our civilization in general. ::: These processes are new effects of Unitary Quantum Theory and do not relate to ::: ei... | eng_Latn | 10,186 |
A compact THz source for imaging and spectroscopy | We report of a easy-to-use terahertz radiation source, which combines a QCL operating at 3.1 THz with a compact, low-input-power Stirling cooler. The QCL, which is based on a two-miniband design, has been developed for high output powers and low electrical pump power. The whole system weighs less than 15 kg including c... | Approach addresses pitfalls that have held back widespread use of SPECT/CT for myocardial ischemia | eng_Latn | 10,187 |
Analysis on risk factor of diabetes mellitus using LISEREL | ObjectiveTo analyze the risk factor of diabetes mellitus in Shenzhen city.MethodsRisk factors of DM was analyzed by factor analysi s and linear structural relation model,then fit and evaluate the model. ResultsIndex of biochemistry affected directly the statu s of disease index of physiology,affected the status of dise... | An Energy Recovery Linac (ERL) Prototype facility to be built at Daresbury Laboratory serves as a testbed for the study of beam dynamics and accelerator technology important for the design and construction of the 4th Generation Light Source (4GLS). This paper describes the possibility of utilising a planar undulator at... | kor_Hang | 10,188 |
Molvib - A flexible program for force field calculations | Abstract A description is given of MOLVIB, a Fortran program for classical harmonic force field calculations on free and crystalline molecules. All the calculations are done in mass-weighted cartesian coordinates, which eliminates most problems with redundant coordinates. The force field is refined by a modified least ... | This bachelor thesis describes the design of an IF-filter and the hardware construction of a new version of a 77 GHz FMCW-radar demonstrator. The purpose of the demonstrator is to illustrate how the silicon germanium-, SiGe, technology could be used instead of the more conventional but also much more expensive gallium ... | eng_Latn | 10,189 |
Excimer laser with ionization by radiation from a nuclear reactor | The development of an electric-discharge excimer laser installed in the active zone of a steady-state nuclear reactor is reported. The working gas mixture He-3 + Xe + NF3 is ionized by the products of the nuclear reaction He-3(n, p)T. The experimental results confirm the conclusion that electric-discharge excimer laser... | Long pulse operation has an important impact on the design and utilization of a neutral beam injection system. This paper, first describes briefly the injectors designed for ITER FEAT as they are the first to be designed for long pulse operation under conditions approaching those that will be experienced in future mach... | eng_Latn | 10,190 |
Charge distribution around a nucleus with Z 137 | The effect of vacuum polarisation for nuclei with Z 137 is studied on the basis of a Bethe-Salpeter type model ignoring spins. The increase of the effective extension of charge distribution is seen to ensure a gap in the electron energy spectrum and thus avoid a breakdown of the theory. | The published cross sections of 232Th, 233U, 234U, 235U, 236U, 237Np, 238U, 239Pu, 240Pu, 241Pu, and 242Pu from 1 keV to 10 MeV have been carefully studied to select best cross sections for fast re... | eng_Latn | 10,191 |
Myocardial perfusion imaging with xenon-133 | In 1948, Eckenhoff et al. [1] described a method of measuring coronary flow based on the principle that an inert gas (nitrous oxide) diffuses across the capillary membrane in proportion to the rate of coronary flow. A concentration curve was obtained by sampling from the coronary sinus and by applying the Fick principl... | Sony ICX 259AL CCD matrices were irradiated by proton and neutron beams of a synchrocyclotron of the Petersburg Nuclear Physics Institute. The data on production cross sections, as well as the spatial and time distributions of pixels of the irradiated matrices with high dark current, are presented. The experimental dat... | eng_Latn | 10,192 |
Binary modulation and transient periodic variations in X-ray emission from the AM Her binary H 0139-68 | The authors present the results of a detailed timing analysis of the soft X-ray data on the AM Her type binary H0139-68, obtained with HEAO-1 and Einstein satellites. It is demonstrated that the X-ray flux from H0139-68 is modulated at the 113.6363 min orbital period of its optical counterpart. The imaging proportional... | This paper presents design and characteristics of a compact, highly integrated Ka-band T/R module built by using a miniature magnetron in the transmitter chain. By implementing a solid-state modulator and microstrip design in the microwave part of the receiver, the overall size of the module has been reduced significan... | eng_Latn | 10,193 |
Room Temperature 10 µm Intersubband Lasers based on Carrier Capture Processes in Step Quantum Wells | In this work, a new room temperature intersubband laser at 10 µm wavelength is proposed in which population inversion is achieved between subbands in a step quantum well based on carrier capture processes. It is known that in quantum well structures, emission of LO phonons is the main carrier capture mechanism. The LO-... | Abstract A prototype of a new CsI(Tl) telescope, which will be used in the reaction studies of light isotopes with energy of several hundred AMeV, was constructed and tested at the Institute of Modern Physics, Chinese Academy of Sciences. The telescope has a multi-layer structure, and the range information was obtained... | eng_Latn | 10,194 |
Determination of the local current density by means of tangential Thomson scattering: Experimental setup, feasibility test, and preliminary observations | The local current density is one of the most important and most difficult parameters to be determined in a thermonuclear plasma. An experimental setup to measure the local electron drift velocity and thus, the current density, by means of tangential Thomson scattering, is presented. The drift velocity of the plasma cau... | Abstract We have designed, constructed and installed a system that makes an accurate 3D map of the electron drift velocity and measures the space-charge distorting effects in the TPCs of the DELPHI Barrel RICH detector. Details of the design considerations, construction and production are given. | eng_Latn | 10,195 |
Influence of γ phase upon thermally stimulated current spectra in polyvinylidene fluoride | The presence of the γ crystalline phase in polyvinylidene fluoride is shown to enhance the thermally stimulated current response around room temperature by at least 50 times. Infrared absorption and thermally stimulated current are correlated. | We consider the cross area of the PP_ and PSV_wave window as the best window for joint PP_ and PSV_wave acquisition in VTI media. Within the effective window, the PP_ and PSV_wave's raypathes and phase angles at all reflection points are calculated, and the reflection (or transmission) coefficients' ratios of PSV- to P... | eng_Latn | 10,196 |
Last trends in the development of halide scintillators | Halide scintillators are the most common used radiation detection materials but these scintillators are still under development. This presentation is devoted to scintillator developments for nuclear medicine (SPECT, PET, X-ray detectors, and so on) and high energy physics (BELLE and BaBar). Examples of recent detector ... | It is shown that the use of pseudo-cubic crystal field Hamiltonian enables to interpret susceptbility and magnetization curves of terbium gallium garnet at low temperatures. | eng_Latn | 10,197 |
The GRIFFIN Facility for Decay-Spectroscopy Studies at TRIUMF-ISAC | Abstract Gamma-Ray Infrastructure For Fundamental Investigations of Nuclei, GRIFFIN, is a new high-efficiency γ -ray spectrometer designed for use in decay spectroscopy experiments with low-energy radioactive ion beams provided by TRIUMF’s Isotope Separator and Accelerator (ISAC-I) facility. GRIFFIN is composed of sixt... | Photo: THE EULOGY Greg Bennick of TRIAL and BETWEEN EARTH & SKY release a quick commentary and statement on the recent happenings in the States ... | kor_Hang | 10,198 |
Gamma-Ray Telescope and Uncertainty Principle | Heisenberg’s Uncertainty Principle is one of the important basic principles of quantum mechanics. In most of the books on quantum mechanics, this uncertainty principle is generally illustrated with the help of a gamma ray microscope, wherein neither the image formation criterion nor the lens properties are taken into a... | We study the effects of gluon radiation on top production and decay processes at an $e^+e^-$ collider.The matrix elements are computed without any approximations, using spinor techniques. We use a Monte Carlo event generator which takes into account the infrared singularity due to soft gluons and differences in kinemat... | eng_Latn | 10,199 |
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