Metal matrix-impregnated diamond composites are widely used in diamond tool manufacturing. In order to satisfy the increasing engineering requirements, researchers have paid more and more attention to enhancing conventional metal matrices by applying novel methods. In this work, ZrO₂ nanoparticles were introduced into the WC-bronze matrix with and without diamond grits via hot pressing to impro...

The bulk chemical composition and interior structure of rocky exoplanets are fundamental importance to understanding their long-term evolution potential habitability. Observations the compositions solar system bodies other planetary systems have increasingly shown a concordant picture that planets reflects host stars for refractory elements, whereas this expression breaks down volatiles. This b...

OBJECTIVES The diamond model considers two dimensions of criteria, i.e., the magnitudes of rates and the trends in rates, in order to prioritize different health issues for health policy decision-making. We aimed in this study to use the diamond model to prioritize 30 causes of death (COD) by considering both the level of and inequality in mortality for the setting of policy goals in Taiwan. ...

The time frame in which hydrogen reionization occurred is highly uncertain, but can be constrained by observations of Lyman-alpha (Ly$\alpha$) emission from distant sources. Neutral the intergalactic medium (IGM) attenuates Ly$\alpha$~photons emitted galaxies. As progressed IGM opacity decreased, increasing Ly$\alpha$~visibility. galaxy Ly$\alpha$~luminosity function (LF) thus a useful tool to ...

Diamond like carbon (DLC) film was grown by hot filament chemical vapor deposition (HFCVD)technique. In the present work, we investigated the quality of the DLC films groew on the substratesthat were coated with various metal nanocatalysts (Au and Ni). A combination of CH4/Ar/H2 rendersthe growth of carbon nanostructures technique (diamond like carbon). The utilized samples werecharacterized by...

We study the effect of quantum vibronic coupling on electronic properties carbon allotropes, including molecules and solids, by combining path integral first principles molecular dynamics (FPMD) with a colored noise thermostat. In addition to avoiding several approximations commonly adopted in calculations electron-phonon coupling, our approach only adds moderate computational cost FPMD simulat...

Ando, et a!., Direct interaction of elemental fluorine with diamond surfaces, Diamond and Related Materials 1996; 5: 1021-1025.* Kealey, et a!., Fluorination of polycrystalline diamond films and powders. An investigation using FTIR spectroscopy, SEM, energyfiltered TEM, XPS and fluorine-IS radiotracer methods, J. Mater. Chern. 2001; 11: 879-886.* Liu, et a!., Functionalization of Nanoscale Diam...

We show that the \(\alpha\)-fractional bilinear indicator/cube testing constant \(\mathcal{BICT}_{T^{\alpha }}\left( \sigma ,\omega \right) \equiv \sup_{Q\in \mathcal{P}^{n}}\sup_{E,F\subset Q}\frac{1}{\sqrt{\left\vert Q\right\vert_{\sigma }\left\vert Q\right\vert _{\omega }}}\left\vert \int_{F}T_{\sigma}^{\alpha }\left( \mathbf{1}_{E}\right) \omega \right\vert ,\) defined for any singular in...