G-lambda: Coordination of a Grid scheduler and lambda path service over GMPLS

At iGrid2005, we conducted a live demonstration where our Grid scheduling system co-allocated computing and network resources with advance reservation through Web services interfaces using the Grid Resource Scheduler (GRS), the Network Resource Management System (NRM), which is capable of GMPLS network resource management, and a GMPLS-based network test-bed, for the first time. The goal of the G-lambda project is to define a standard Web services interface (GNS-WSI) between GRS and NRM that is acceptable for both application service providers and commercial network operators, and which can be used as a tool for realizing new and emerging commercial services.     

Inclusion of bisphenols by a self-assembled monolayer of thiolated calix[6]arene on a gold surface

The molecular recognition of various kinds of bisphenols (BPs) by a self-assembled monolayer (SAM) of thiolated calix[6]arene on a gold electrode was examined using cyclic voltammetry (CV). Based on the inhibitory effect of BPs on the inclusion of hydroquinone (HQ) as a probe bythe surface-confined calix[6]arene, the association constants (Kassoc) of BPs with the immobilized calix[6]arene were estimated. The Kassoc values for BPs with the SAM of thiolated hexasodium calix[6]arenehexasulfonic acid (thioSCX6) were much smaller than those in the free calix[6]arene derivative systems reported previously. The order of the Kassoc values for BPs with thioSCX6 was bisphenol A (BPA) > bisphenol S (BPS) > bisphenol B (BPB) > bisphenol F (BPF). The Kassoc values for BPA and BPS with thioSCX6 were larger than that for BPB, despite the larger hydrophobicity of BPB than that of BPA and BPS. This is probably because the inclusion phenomena in this system are not simply driven by the hydrophobic interaction, but are significantly affected by several steric and structural factors with immobilization of the host. Those are (1) a decrease in flexibility of the SCX6 cavity by the formation of SAM, (2) a decrease in inclusion ability of the SCX6 by the presence of Au surface just beneath it, and (3) a repulsion of hydrophobic guests bythe presence of sulfonate groups at the top of the SAM. Moreover, the association phenomena (adsorption and desorption processes) of a bisphenol with the SCX6 SAM were examined directly by using localized surface plasmon resonance spectroscopy.     

Retrieval of trace gases from aerosol-influenced infrared transmission spectra observed by low-spectral-resolution Fourier-transform spectrometers

A method for the simultaneous retrieval of gas concentrations and an extinction spectrum of aerosols and polar stratospheric clouds from infrared transmission spectra observed in the solar occultation geometry is described. It is particularly suited to measurements by Fourier-transform spectrometers with relatively low spectral resolution (0.1-1 cm(-1)). The method does not require a priori assumptions on aerosol properties; it utilizes only the fact that the wave-number dependence of aerosol extinction is much weaker than that of gas absorption. In this method, an aerosol extinction spectrum is approximated by a straight line within a relatively wide spectral range defined as mediumwindow.     

全光网中功率放大器瞬态响应的消除

对光网络中ＥＤＦＡ的瞬态响应产生的原因进行了并对相关因素进行了实验。提出了自己的解决方案,并对方案进行实验论证,取得了预想的效果。     

New developments in ionized-cluster beam and reactive ionized-cluster beam deposition techniques

Ionized-cluster beam (ICB) and reactive ionized-cluster beam (R-ICB) deposition techniques are described from the standpoint of the ion-based technique, as applied to the production of thin film devices. In ICB deposition, clusters (macroparticles consisting of approximately 10³ atoms loosely coupled together) instead of atomic or molecular particles are used after ionization, resulting in a remarkable improvement of epitaxial film growth and of the quality of deposited films with strong adhesion. This paper describes in detail the influences of the ion content and the acceleration voltage on nucleation and film properties. MnBi films as magneto-optical memories and ZnO epitaxial films as optical devices are discussed as practical applications of the ICB and R-ICB deposition techniques.     

High-power CW operation of 780 nm T3 laser diodes

Stable laser operation at over 100 mW in the wavelength range of 780nm has been achieved by the T3 structure. The CW light output power at room temperature was over 160mW. The narrow beam divergence of low ellipticity has been realised. The lasers have been in operation for more than 800h at 40mW at 60°C with no significant degradation.     

Hydrogenation of 1,3-butadiene and the adsorbed hydrogens on a platinum electrode

Hydrogenation of 1,3-butadiene on a Pt electrode in M H₂So₄ was studied both on open circuit and under potentiostatic polarization to examine the reactivity of the adsorbed hydrogens. Results in region-H (P_H/P_B < 20 on open circuit, ø > 80 mV/rhe in the electroreduction) show that the most stable hydrogen is inactive and interchanges to the secondly stable hydrogen during the hydrogenation. The latter adsorbed hydrogen, H_qø, is always in equilibrium with H⁺ and e^? by Hø ? H⁺ + e^? and reacts with adsorbed diene, giving butenes and n-butane. The rate of the interchange is three orders of magnitude smaller than the hydrogenation rate. Among the surface elementary steps, the second addition of hydrogen atom seems to be slowest. Difference in hydrogen source, ie H₂ molecule or proton and electron, has no effect on the reaction mechanism.     

Cryoscopic studies in fluoride-Oxide-Silica systems: Part II. systems containing Mg2+, Ca2+, Ba2+ and Pb2+

The depressions of the freezing temperatures of MgF₂, CaF₂, and BaF₂ by adding 2MO · SiO₂, 3MO · 2SiO₂, MO · SiO₂, 2MO · 3SiO₂, and MO · 2SiO₂ where M = Mg, Ca and Ba, have been measured, as have the depressions of the freezing temperature of PbF₂ resulting from additions of 2Pb · SiO₂, 3PbO · 2SiO₂ and PbO · SiO₂. The variations of the activities of the fluorides with liquidus composition have been calculated. These are shown to be in good agreement with a proposed theoretical model of the constitutions of these melts. In the alkaline earth systems with MO/SiO₂ > 1.5 linear chain silicate ions and free F⁻ ions are postulated and in melts of MO/SiO₂ < 1.5 reaction between F⁻ and silicate ions to form polyfluorosilicate anions is postulated. These conclusions are in agreement with those drawn from infrared absorption studies of CaF₂-CaO-SiO₂ glasses. The activity behavior in the reciprocal systems MF₂-M′O · SiO₂ and M′F₂-MO · SiO₂ is explained in terms of polymerization and preferred ionic association effects within the melts. In the lead fluoride-silicate systems fluorination of the silicate ions occurs at PbO/SiO₂ = 2 and, in contrast with the alkali and alkaline earth systems, it appears that polyfluorosilicate anions and free O²⁻ anions can coexist in lead fluorosilicate melts.