A single-frequency 1645 nm pulsed laser with frequency stability close to 100 kHz was demonstrated. The oscillator is injection-seeded by a narrow linewidth Er:Y3Al5O12 (Er:YAG) nonplanar ring and stabilized the modified Pound–Drever–Hall method. pulse repetition rate can be set from 500 Hz 82.72 134.44 energy 9.84 mJ 19.55 mJ. To our knowledge, this best of injection-seeding.

This study reports on the structure analyses of NiO-BCZY (BCZY = BaCe0.54Zr0.36Y0.1O3-δ) anode composite materials with ratio 50:50 for proton ceramic fuel cells (PCFCs) application. A product sintered was developed to understand structural properties materials. The objectives this work were (a) investigate lattice expansion by using a high-temperature XRD (HT-XRD) from 400–700 °C; and (b) calc...

Los fosfatos de calcio son materiales biocerámicos gran importancia utilizados en el área recubrimientos bioactivos para implantes metálicos. En presente estudio, una muestra fue sintetizada mediante método precipitación química a partir Ca(NO3)2 y (NH4)2HPO4. La técnica difracción rayos-X utilizada realizar un análisis cualitativo cuantitativo las fases cristalinas presentes material los métod...

Abstract The thermal behaviour of TKX‐50 was reinvestigated in an extended temperature range by means resolved X‐ray diffraction. TKX‐50, synthesized at the Fraunhofer ICT, identified using Rietveld‐analysis and reference data from CCDC. Monitoring refined crystal versus verified a highly anisotropic expansion behavior connected to layer structure. However, coefficients (CTEs) were found order ...

The effect of CaO on the formation of β- and γ-zirconia nanoparticles from α-zirconia was investigated and their stability evaluated via mechanical activation. α-ZrO2+8.5wt%CaO powder was milled for 2-150 hours with ball-to-powder weight ratios (BPWR) of 40:1 and 60:1. Structural evaluations were conducted using X-Ray diffraction and scanning electron microscope (SEM). Thermal analysis wa...

Timothy Williamson’s project in Knowledge and Its Limits (Williamson, 2000) includes proposals for substantial revisions in the received approach to epistemology. One received view is that knowledge is conceptualized in terms of a conjunction of factors that are individually necessary and jointly sufficient for knowing. A central aim of epistemology is to state such necessary and sufficient con...

An alternative method to synthesize well-defined cyclic polymers via combination of anionic polymerization high vacuum techniques and Williamson etherification reaction in moderate dilution up 1 g scale.

The Hall Magnetohydrodynamic (MHD) equations are an extension of the standard MHD that include “Hall” term from general Ohm’s law. decouples ion and electron motion physically on inertial length scales. Implementing in a numerical solver allows more physical simulations for plasma dynamics scales less than scale but greater length. present effort is important step towards producing correct resu...

activated protein C and factor V Leiden as risk factors for venous thrombosis. Thromb Haemost. 1995;74:449-453. 5. Williamson D, Brown K, Luddington R, Baglin C, Baglin T. Factor V Cambridge: a new mutation (Arg3063Thr) associated with resistance to activated protein C. Blood. 1998;91:1140-1144. 6. Daly E, Vessey MP, Hawkins MM, Carson JL, Gough P, Marsh S. Risk of venous thromboembolism in use...

In this paper, we obtain a successive quadratic programming algorithm for solving the semidefinite programming (SDP) relaxation of the binary quadratic programming. Combining with a randomized method of Goemans and Williamson, it provides an efficient approximation for the binary quadratic programming. Furthermore, its convergence result is given. At last, We report some numerical examples to c...