Electronics Newsweekly back issues from August 2008:
Studies in the area of science reported from Y.K. Chembo and co-researchers.
Aug 04, 2008 ... According to a study from Besancon, France, "We show that when subjected to high gain, delay-line optoelectronic oscillators can display a strongly multimode behavior depending on the feedback bandwidth." "We found that this dynamical regime may arise when the bandwidth of the ...
Data on science described by T. Tamura et al.(Report)
Aug 04, 2008 ... "The method for producing Mg-Cu-Y and Fe-Co-B-Si-Nb bulk metallic glasses using electromagnetic vibrations is effective in forming the metallic glass phase. Disappearance or decrement of clusters by the electromagnetic vibrations applied to the liquid state is considered to cause ...
Study findings from Federal University broaden understanding of science.
Aug 04, 2008 ... According to recent research from Recife, Brazil, "Absorption of two photons by organic molecules has many important technological applications, making theoretical modeling and synthesis of new molecules with large values of cross-sections, delta(omega), much needed activities. In this ...
New vacuum science study findings recently were published by researchers at Wroclaw University.(Report)
Aug 04, 2008 ... "It is well known that the magnetron self-sustained sputtering (SSS) process can be achieved in the direct current (DC) operation mode (DC-SSS) if certain conditions are fulfilled: high self-sputtering yield of the target material (theoretically gamma > 1), appropriate magnetron source ...
New desalination study findings recently were reported by researchers at Guilan University.
Aug 04, 2008 ... According to a study from Iran, "An ion-selective membrane electrode to the drug atenolol, based on incorporation of the atenolol-phosphotungstate ion-associated in a PVC coating membrane and acetophenone as plasticizer was constructed. The influence of the membrane composition, ...
University of Tokyo details research in planetary science.
Aug 04, 2008 ... According to recent research from Tokyo, Japan, "[1] A linear analysis of the hybrid Kelvin-Helmholtz/Rayleigh-Taylor (KH/RT) instability in the magnetosphere-ionosphere coupling system is presented. In the magnetosphere plasma particles can move by the electric (E X B) drift, magnetic ...
Reports from North Dakota State University add new data to research in biosensors and bioelectronics.
Aug 04, 2008 ... According to a study from the United States, "A novel tyrosinase biosensor based on Fe3O4 nanoparticles-chitosan nanocomposite has been developed for the detection of phenolic compounds. The large surface area of Fe3O4 nanoparticles and the porous morphology of chitosan led to a high ...
New semiconductors study findings reported from E.A. Bagaev and co-authors.
Aug 04, 2008 ... "The optical properties of CdS nanoclusters are studied for samples in which the nanoclusters are embedded in the Langmuir-Blodgett film matrix or the matrix is removed by annealing in vacuum or ammonia atmosphere. After annealing the samples in vacuum or ammonia, the bands of emission ...
Scientists at Sogang University target chemical engineering.
Aug 04, 2008 ... "A bioactive platform with a carbon composite electrode was developed for rapid detection of Escherichia coli O157:117. The porous carbon composite electrode was prepared by a sol-gel method with a mixture of graphite powder and tetraethyl orthosilicate/ethanol," investigators in Seoul, ...
Studies from C.S. Chang and co-authors have provided new information about information technology.
Aug 04, 2008 ... According to a study from Taiwan, "This paper presents a real-time decision support system (RDSS) based on artificial intelligence (AI) for voltage collapse avoidance (VCA) in power supply networks. The RDSS scheme employs a fuzzy hyperrectangular composite neural network (FHRCNN) to carry ...
New research on analytical science from T.B. Eom and co-authors summarized.
Aug 04, 2008 ... "A phase-encoding electronics capable of compensating for the nonlinearity error in a heterodyne laser interferometer is described. The system consists of the phase demodulating electronics and the nonlinearity compensating electronics," investigators in South Korea report. ...
Studies from K.H. Lin et al further understanding of laser physics.
Aug 04, 2008 ... According to recent research published in the journal Laser Physics Letters, "We demonstrated selective amplification of supercontinuum ultrashort optical pulses around 1300-nm and 1550-nm bands by injecting a supercontinuum source into a semiconductor optical amplifier (SOA) and an ...
Findings from M.C. Kao and co-authors broaden understanding of materials science.
Aug 04, 2008 ... "Bi4-xYxTi3O12 thin films were successfully deposited on Pt(111)/Ti/SiO2/Si(100) substrates by sol-gel method and rapid thermal annealing. The effects of yttrium-substitution and annealing temperature (500-800 degrees C) on the microstructure and electrical properties of bismuth titanate ...
Scientists at Technical University of Munich target nuclear physics.
Aug 04, 2008 ... "A new electronic readout for CsI-coated multiwire proportional chambers (MWPC), used as photon detectors in the COMPASS ring imaging Cherenkov (RICH) detector, is described. A prototype system comprising more than 5000 channels has been built and tested in high-intensity beam conditions," ...
Study findings from K. Kakushima et al broaden understanding of applied surface science.
Aug 04, 2008 ... According to recent research from Yokohama, Japan, "The flat band voltage shifts of HfO2/SiO2/nSi capacitors with ultra-thin La2O3 insertion at HfO2/SiO2 interface have been confirmed using hard X-ray photoelectron spectroscopy (HX-PES)." "By increasing the amount of La2O3 ...
New electrochemical research data have been reported by V.S. Kolosnitsyn and co-authors.
Aug 04, 2008 ... "The effect of lithium polysulfides on the cycling of a lithium electrode and the corrosion rate of lithium cathodic deposits in sulfolane electrolytes is studied," investigators in Russia report. "Lithium polysulfides are found to affect the shape of polarization curves, the ...
Reports from P. Sawai and colleagues advance knowledge in applied polymer science.
Aug 04, 2008 ... According to a study from Kharagpur, India, "The electromagnetic interference shielding characteristics of polypropylene (PP) and poly(ether imide) (PEI) filled with synthetic graphite composites were studied. The thermal properties were characterized by differential scanning calorimetry ...
Report summarizes decision support systems study findings from University of Vermont.
Aug 04, 2008 ... According to a study from the United States, "Network performance is a serious concern faced by many campus network managers across the country. As demand for entertainment-based Peer-to-Peer (P2P) applications that involve the transfer of large audio and video files continues to grow, ...
Data on electrical power detailed by researchers at Brunel University.(Report)
Aug 04, 2008 ... According to recent research published in the International Journal of Electrical Power & Energy Systems, "This paper proposes a method to optimize reactive power flow (ORPF) with regard to multiple objectives while maintaining system voltage security across a time-domain. Compromise ...
Reports summarize space research from Zhejiang University.(Report)
Aug 04, 2008 ... "Energetic charged particles, which are often observed in solar active regions, may be also produced in interplanetary space due to the decoupling of ions and electrons in plasma. The Hall term in general Ohm's law is generally thought to be responsible for the decoupling of electrons and ...
New distributed computing study findings reported from USA Scientific.
Aug 04, 2008 ... According to a study from the United States, "Reconfigurable computers (RCs) combine general-purpose processors (GPPs) with field programmable gate arrays (FPGAs). The FPGAs are reconfigured at run time to become application-specific processors that collaborate with the GPPs to execute the ...
New geomagnetism and aeronomy study findings have been reported by K.G. Ivanov and colleagues.
Aug 04, 2008 ... "It is proposed to determined minimums of the 11-year solar cycles based on a minimal flux of the large-scale open solar magnetic field," scientists writing in the journal Geomagnetism and Aeronomy report. "The minimal fluxes before the finished cycle 23 (Carrington rotation CR ...
New findings in physical chemistry described from University of London, Imperial College.
Aug 04, 2008 ... "We have carried out a systematic investigation of the surface electrochemistry of glassy carbon-epoxy composite electrodes," scientists in London, the United Kingdom report. "Key findings include the following: the distributed resistance in electrodes results in shifts in ...
Study data from University of York provide new insights into applied catalysis research.
Aug 04, 2008 ... "A smart and greener microwave approach to the selective oxidation of cyclohexene is reported whereby, depending on the reaction conditions, the epoxide (65% conversion, 75% selectivity), the enol (70% conversion, 80% selectivity) or the enone (> 99% conversion, 89% selectivity) can be ...
Studies from Hanyang University have provided new data on chemical research.
Aug 04, 2008 ... "Electric current flow was observed through imogolite film when imogolite ((HO)(3)Al2O3SiOH) was exposed to water molecules and connected to external electrodes. Current flow was due to the bound water on the surface of imogolite," scientists in Seoul, South Korea report. ...
Research from L.M. Xu and co-authors in the area of applied materials science published.
Aug 04, 2008 ... "We have investigated the properties of Mn-doped thin films grown on SrTiO3 (100) substrate by plasma assisted molecular beam epitaxy (PAMBE). The microstructural, electrical, optical, and magnetic properties of these thin films have been characterized systematically, with a primary focus ...
Studies from University of Bath provide new data on solid state physics.
Aug 04, 2008 ... According to recent research from Bath, the United Kingdom, "We have observed remarkable changes in tie magnetic properties of excitons as they acquire kinetic energy. In particular, the Zeeman splittings and diamagnetic shifts of excitonic transitions when magnetic fields are applied ...
Researchers from University of Marburg report recent findings in photochemistry.
Aug 04, 2008 ... "Phototriggered chemical reactions are elegant and spatially selective. However, in application a general problem is that aside of the desired changes, e.g. induced by laser, undesired changes may occur, e.g. induced by daylight or sunlight," researchers in Marburg, Germany report. ...
Data from University of Delhi advance knowledge in dispersion science.
Aug 04, 2008 ... "Doses of 0.0150 weber m(-2) magnetic flux for 30 minutes are given to four series of biomolecules in aqueous medium, densities (rho), viscosities (eta), and surface tension (gamma) were measured at 304.15 K. The vitamins and carbohydrates decrease densities and viscosities and the ...
Study data from J. Yoo et al provide new insights into superconductivity.
Aug 04, 2008 ... "We calculated the current distribution in a coated conductor (CC) from magnetic induction profiles measured using the scanning Hall probe method. An external magnetic field was applied in the normal direction with respect to the tape surface and was decreased stepwise from H-peak to ...
New findings from Alfred University in the area of science published.
Aug 04, 2008 ... According to recent research published in the Journal of the Ceramic Society of Japan, "An investigation has been made of the use of 2.45 GHz microwave energy to sinter SbN4-ZrO2 (4 mol% Y2O3 stabilized) composites with 5 mass% MgO as a densifying aid at 1600 degrees C to avoid the ...
Research results from C.C. Chen and co-authors update knowledge of wireless communications.(Report)
Aug 04, 2008 ... "The capacity of a power controlled wireless network can be changing due to user's mobility, fading or shadowing effects. As a result, the quality of service (QOS) of all users may not be guaranteed in a wireless network," investigators in Hsinchu, Taiwan report. "In this paper, ...
Findings from V.Y. Butko and co-authors provide new insights into nanotechnology.
Aug 04, 2008 ... According to recent research published in the journal Nanotechnology, "We report strongly magnetic field dependent transport in crystalline strontium titanate at the interface with an ion beam treated nanolayer. Microscopy shows that this interface is atomically sharp." "The ...
Researchers from National University describe findings in applied physics.
Aug 04, 2008 ... According to recent research published in the Journal of Physics D - Applied Physics, "Pb(Zr0.3Ti0.7)O-3 thin films, respectively, doped with 1 mol% W and 1 mol% Mo have been deposited on the LaNiO3 bottom electrodes using pulse laser deposition. The x-ray diffraction analyses revealed ...
Studies from R.W. Zabel and colleagues yield new information about hydrobiology.
Aug 04, 2008 ... According to recent research from the United States, "Migratory fish populations are impacted worldwide by river impoundments. Efforts to restore populations will benefit from a clear understanding of survival and migration process over a wide-range of river conditions." "We ...
Studies from Adam Mickiewicz University in the area of molecular research published.
Aug 04, 2008 ... "The crystal structure of bis(1-methylisonicotinate)hydrogen perchlorate, (MIN)(2)H center dot ClO4, has been studied by X-ray diffraction, DFT calculations, FT-IR, Raman, H-1 and C-13 NMR spectra. The crystals are monoclinic, space group P2(1)/n, with a pair of MIN molecules bridged by a ...
Research conducted at Technical University of Munich has provided new information about chemical physics.
Aug 04, 2008 ... According to a study from Garching, Germany, "Two-dimensional optical photon echo spectra are simulated for model systems which exhibit vibrational, electronic and a combination of electronic and vibrational coherent dynamics. The coherent motion manifests itself as periodic beatings of ...
Researchers from University of Maryland report recent findings in astronomy.
Aug 04, 2008 ... According to a study from the United States, "We investigate the effect of nonevaporating primordial black holes (PBHs) on the ionization and thermal history of the universe. X-rays emitted by gas accretion onto PBHs modify the cosmic recombination history, producing measurable effects on ...
Studies from J.A. Fornes and colleagues reveal new findings on interface science.
Aug 04, 2008 ... "We calculate the electrical capacitance on the surfaces of protein molecules from hydrodynamic data of the proteins. Then we estimate the electrical fluctuations (charge, voltage) through the fluctuation-dissipation theorem, which links the electrical capacitance of the system with these ...
Studies from University of California describe new findings in geophysics.
Aug 04, 2008 ... According to a study from the United States, "We determine adjoint equations and Frechet kernels for global seismic wave propagation based upon a Lagrange multiplier method. We start from the equations of motion for a rotating, self-gravitating earth model initially in hydrostatic ...
Reports outline chemistry study results from Z.S. Wang et al.
Aug 04, 2008 ... According to recent research from Tsukuba, Japan, "Novel organic dyes (MK dyes), which have a carbazole derivative as an electron donor and a cyanoacrylic acid moiety (= C(- C N)COOH) as an electron acceptor and an anchoring group, connected with n-hexyl-substituted oligothiophenes as a ...
Study findings from M.G. Garcia et al broaden understanding of astrophysics.
Aug 04, 2008 ... According to a study from Meudon, France, "Transfer in lines controls the gas cooling of photon dominated regions (PDR) and provides many of the observational constraints that are available for their modelling. The interpretation of infrared and radio observations by the new generation of ...
Research conducted at Nanjing University has provided new information about optical research.
Aug 04, 2008 ... "An improved planar structure of left-handed (LH) metamaterial is presented, and then designed and analyzed in microwave regime," scientists writing in the journal Optics Express report. "In the anticipated LH frequency regime, the LH property is validated from the phenomena of ...
New physics study findings recently were reported by researchers at University of Federico II.
Aug 04, 2008 ... "We present a measurement of the ratio R=Gamma(K-e3 gamma(0);E*(gamma) > 30 MeV, theta*(gamma) > 20 degrees)/Gamma(K-e3(0)) and a first measurement of the direct emission contribution in semileptonic K-L decays," scientists in Naples, Italy report. "The measurement was ...
Studies from University of Sydney yield new data on solid state chemistry.
Aug 04, 2008 ... According to recent research from Sydney, Canada, "Crystal structures of a series of bi-layered compounds ABi(4)Ti(4)O(15) (A = Ca, Sr, Ba, Pb) have been investigated using a combination of synchrotron X-ray and neutron powder diffraction data." "All four oxides adopt an ...
Study data from University of Stellenbosch update understanding of microwave research.
Aug 04, 2008 ... According to recent research from Stellenbosch, South Africa, "An axially symmetric power combiner, which utilizes a tapered conical impedance matching network to transform ten 50-Omega inputs to a central coaxial line over the X-band, is presented. The use of a conical line allows ...
Studies in the area of environmental research reported from H.M. Menapace and co-researchers.
Aug 04, 2008 ... According to recent research from Leoben, Austria, "Wastewater effluents from sewage treatment plants (STP) are important point sources for residues of pharmaceuticals and complexing agents in the aquatic environment. For this reason a research project, which started in December 2006, was ...
Research reports from Ewha Womans University provide new insights into solids.
Aug 04, 2008 ... "Colloidal crystal-templating methods have been used to prepare inverse opal photonic crystal films of La-doped bismuth titanate, Bi3.25La0.75Ti3O12 (BLT)," scientists in Seoul, South Korea report. "Ordered arrays of uniformly sized polymer spheres were deposited on glass ...
New computational mathematics findings from O. Kavaklioglu and co-researchers published.
Aug 04, 2008 ... "The 'asymptotic solution' for the classical electromagnetic problem of the diffraction of obliquely incident plane E-polarized waves by an infinite array of infinitely long insulating dielectric circular cylinders is investigated," researchers in Izmir, Turkey report. ...
Research data from O. Bergman and colleagues update understanding of high energy physics.
Aug 04, 2008 ... According to recent research from the United States, "We study the response of the Sakai-Sugimoto holographic model of large N-c QCD at nonzero temperature to external electric and magnetic fields. In the electric case we find a first-order insulator-conductor transition in both the ...
Reports from Kuwait University describe recent advances in heterocycle research.
Aug 04, 2008 ... "The arylformazane (2) was produced via coupling the alpha-oxoarylhydrazones (1) with aromatic diazonium salts," scientists in Kuwait report. "These formazane condensed readily with ethyl cyanoacetate to yield arylazopyridazinones (4) that reacted with sulphur in. the presence ...
New electrophoresis study findings have been published by scientists at Vytautas Magnus University.
Aug 04, 2008 ... "Hyperlink robust biocompatible solid-phase microextraction (SPME) devices were prepared using continuous bed (monolithic) restricted-access media (RAM) as the SPME capillary insert The RAM-based SPME approach was able to simultaneously separate proteins from a biological sample, while ...
Research on electronics published by T. Ito et al.
Aug 04, 2008 ... "For wireless receivers, low-power 1.2-V 12-bit 100-MSPS pipeline ADCs are fabricated in 90-nm CMOS technology. To achieve low-power dissipation at 1.2 V without the degradation of SNR, the configuration of 2.5 bit/stage is employed with an I/Q amplifier sharing technique," scientists ...
Scientists at Sun Yat-Sen University release new data on circuits research.
Aug 04, 2008 ... "This paper presents a novel variable gain amplifier (VGA) design which is applied in the automatic gain control loop of digital video broadcasting (DVB) receivers designed for standards DVB-T/H. The VGA is composed of three cascaded tunable gain stages to provide a 70 dB dynamic range ...
Studies from W.J. Xu and co-researchers in the area of electrical communications published.
Aug 04, 2008 ... "This letter discusses channel quantization problem in multiuser orthogonal frequency division multiplexing (OFDM) systems based on maximum subchannel signal-to-noise ratio (Max-SNR) resource allocation (RA). It is assumed that subcarriers are assigned to users according to Max-SNR RA," ...
Research from M.R. Casu and co-researchers in the area of circuits and systems published.(Report)
Aug 04, 2008 ... "Ultra-wide-band (UWB) communication based on the impulse radio paradigm is becoming increasingly popular. According to the IEEE 802.15 WPAN Low Rate Alternative PRY Task Group 4a, UWB will play a major role in localization applications, due to the high time resolution of UWB signals which ...
Reports from J.W. Zhang and co-researchers add new data to research in very large scale integration systems.
Aug 04, 2008 ... According to a study from Harbin, People's Republic of China, "A current-recycling technique for shadow-match-line (SML) sensing in content-addressable memories (CAMS) is presented. In order to minimize energy-overhead, a novel current-recycling voltage detector (CRVD) is devised, whose ...
Research on electromagnetic research discussed by U.L. Olsen and co-researchers.
Aug 04, 2008 ... "A three-dimensional X-ray detector for imaging 30-200 keV photons is described. It comprises a set of semi-transparent structured scintillators, where each scintillator is a regular array of waveguides in silicon, and with pores filled with CsI," researchers in Roskilde, Denmark report. ...
Scientists at University of Calabria report research in microprocessors and microsystems.
Aug 04, 2008 ... According to a study from Cosenza, Italy, "This paper presents a novel architecture for matrix multiplication optimized to be integrated as a coprocessor unit with embedded processors in modern FPGAs. In contrast with previous proposals that accelerate just the matrix multiplication ...
Studies from China University provide new data on solid state electronics.
Aug 04, 2008 ... According to a study from People's Republic of China, "Based on a closed form of the base-emitter voltage of the parasitic bipolar transistor, a physical model of floating body effects is proposed for polysilicon thin film transistors, which takes into account the polysilicon graded pn ...
Scientists at University of Bristol publish research in signal processing.
Aug 04, 2008 ... "Significant enhancements in spectral efficiency and error-resilience must be obtained from emerging wireless video systems if high-quality multimedia transmission is to become cost-effective. MIMO (multiple-input-multiple-output) technology promises to deliver the sustainable high ...
Research on number theory described by scientists at University of Florida.
Aug 04, 2008 ... "We prove that the Fourier coefficients of a certain general eta product considered by K. Saito are nonnegative. The proof is elementary and depends on a multidimensional theta function identity," investigators in the United States report. "The z = 1 case is an identity for the ...
Recent studies from Osaka University add new data to game theory.(Report)
Aug 04, 2008 ... According to recent research from Osumi, Japan, "In this paper, we discuss the computational complexity of the strategic cores of a class of n-person games defined by Masuzawa (Int J Game Theory 32:479-483, 2003), which includes economic situations with monotone externality." ...
Studies from C. Brites et al provide new data on signal processing.
Aug 04, 2008 ... According to a study from Lisbon, Portugal, "Wyner-Ziv (WZ) video coding-a particular case of distributed video coding (DVC)-is a new video coding paradigm based on two major Information Theory results: the Slepian-Wolf and Wyner-Ziv theorems. In recent years, some practical WZ video ...
Studies from Beihang University provide new data on wireless communications.(Report)
Aug 04, 2008 ... "Recently, ultra-wideband (UWB) impulse radio systems based on noncoherent detection, such as transmitted reference and differential modulation systems, have drawn a lot of attention for their potential applications in low-rate and low-cost communications. In this paper, a unified approach ...