An optical fiber with long period fiber gratings includes an optical fiber axis, a core region extending along the fiber axis, the core region having a core refractive index, a cladding region surrounding the core region, the cladding having a cladding refractive index, and a plurality of microholes.....
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The present invention provides compounds of the formulawhereinR is optionally substituted lower alkyl, cycloalkyl or aryl;R′ is alkyl or aryl;n is zero or an integer of 1 or 2; or an enantiomer thereof; or an enantiomeric mixture thereof.The compounds of formula (I) are bridged C2-symmetric biphenyl.....
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The present invention relates to indolyl phosphine ligands, and methods of making such ligands utilizing phenyl hydrazines and aryl ketones as the starting material. The present invention further includes uses of the ligands in the synthesis of pharmaceuticals, materials, and agriculture.
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A magnetic core is made of a composite magnetic material having a relative permeability of between 1 and 29 at a frequency range from 20 kHz to 2.5 MHz. The composite magnetic material consists of cobalt and nickel particles having an average diameter in the range of 1 to 100 micrometers, and a poly.....
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The present invention relates methods for the biosynthesis of tetrodotoxin (TTX) involving the steps of obtaining a culture possessing one or more of a Vibriospecies, such as through a seed culture, inoculating the culture and tissue extract from a textrodotoxin-bearing organism in a fermenter mediu.....
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