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  • Propagation characteristics and loss of metal-clad graded ...

    A method to analyse the propagation characteristics and loss of metal-clad graded-index optical waveguides is proposed. The propagation constant and attenuation coefficient are calculated by perturbation and multi-layer approximation for graded-index waveguides with the aid of .

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    The dollar index rallied from lows of 88.15 in February 2018 to its most recent high at 96.865 last week. A stronger dollar is typically bearish for the prices of precious metals.

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    Synopsis. An unusual porous metal−organic framework has been synthesized successfully. Structure analysis reveals that there exist two kinds of 1D inerratic nanotubes (1D cylindrical 14.26 Å and triangular prism 10.69 × 10.69 × 10.69 Å 3 nanotubes) in the framework, and gas sorption behavior shows a relatively high capacity and selectivity of CO 2 over CH 4.

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    2 · Gold futures end with a loss on Monday, pulling back from the nearly five-month high they settled at late last week, as the U.S. dollar strengthens at the expense of the British pound.

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    The optical constants for Cu, Ag, and Au determined by reflection electron energy loss spectroscopy (REELS) using a data treatment method described in the previous paper in this Journal are reported. The purpose of this study is to further test the data treatment method on less free-electron-like metals.

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    As you can see, out of the more common metals, copper and aluminum have the highest thermal conductivity while steel and bronze have the lowest. Heat conductivity is a very important property when deciding which metal to use for a specific application.

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    Dec 10, 2014· The conveyor will convey bottles to equal-index plate. The plate makes bottles do intermittent motion in the function of cam indexer. Bottles arrive at plugging part, then go to capping part.

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    Loss Factor—k" is the relative loss factor. In the literature, it is usually given as Loss Factor. It should not be confused with Dissipation Factor or Loss Tangent. Note that the Loss Factor is the product of the Dielectric Constant and Dissipation Factor. Lossy Dielectric Lossy dielectrics are characterized by tan δ above 0.1 (approximately).

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    Hearing loss and tinnitus can occur in one or both ears. Sometimes exposure to impulse or continuous loud noise causes a temporary hearing loss that disappears 16 to 48 hours later. Recent research suggests, however, that although the loss of hearing seems to disappear, there may be residual long-term damage to your hearing.

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