Abstract: Systems, devices, and methods for providing alternative content in audio-video streams are disclosed. A manifest data structure including data reflective of a plurality of content segments is generated. At least one alternative content indicator, each indicating one of said plurality of content segments as being an alternative content segment is obtained. The manifest data structure is modified to remove data reflective of those of said plurality of content segments that are not indicated by said one of said alternative content indicators as being an alternative content segment. Upon receiving a request from a client device to view alternative content, the modified manifest data structure is sent to the client device.

Abstract: A boron carbide solid state neutron detector and method of using the detector is disclosed, wherein the detector includes a layer of boron carbide wherein the boron carbide layer is an electrically active part of the detection device, a sensing mechanism inherent to said boron carbide layer, wherein the sensing mechanism detects changes in the boron carbide layer caused by the interception of neutrons and a monitoring device coupled to the sensing mechanics.

Abstract: A method of bonding metal to a non-metal substrate. The process includes placing the metal in contact with a non-metal substrate and blanketing the contact region with a gaseous atmosphere in which the amount of reactive gas is limited to minimize oxidation of the metal at the surface. Heating of the metal is accomplished by various means including a laser beam. The metal is heated to a point where the reactive gas and metal form a eutectic that wets the contact area between the metal and non-metallic substrate. Upon cooling, the metal and non-metallic substrate are bonded together over a substantial part of the contact area.

Abstract: A process for the preparation of a pharmaceutically active compound in a stereospecific form of the formula ##STR1## or a pharmaceutically acceptable salt or ester thereof, like an alkali metal salt or an alkaline earth metal salt or a pivaloyl ester, wherein R.sub.1 represents an optionally substituted aryl group such as a phenyl or naphthyl group optionally included in a heterocyclic ring system, which is optionally substituted, or represents a heteroaromatic ring system containing in addition to carbon atoms one or more atoms selected from nitrogen, sulphur and oxygen, this ring system being optionally substituted, which comprises subjecting a compound of the formula ##STR2## wherein R.sub.

Abstract: A process for the preparation of metoprolol in a stereospecific form or a non-toxic, pharmaceutically acceptable acid addition salt thereof and/or a stereospecific form of 4-(2-methoxyethyl)-phenyl glycidyl ether which comprises subjecting 4-(2-methoxyethyl)-phenyl allyl ether to the action of a microorganism having the ability for stereoselective epoxidation of 4-(2-methoxyethyl)-phenyl allyl ether into 4-(2-methoxyethyl)-phenyl glycidyl ether having at least 80% by weight the S configuration, at least partly separating 4-(2-methoxyethyl)-phenyl glycidyl ether and/or reacting 4-(2-methoxyethyl)-phenyl glycidyl ether with isopropylamine and at least partly separating metoprolol and/or converting metoprolol into its non-toxic, pharmaceutically acceptable acid addition salt.

Abstract: A process for the preparation of a pharmaceutically active compound in a stereospecific form of the formula ##STR1## or a pharmaceutically acceptable salt or ester thereof, like an alkali metal salt or an alkaline earth metal salt or a pivaloyl ester, wherein R.sub.1 represents an optionally substituted aryl group such as a phenyl or naphthyl group optionally included in a heterocyclic ring system, which is optionally substituted, or represents a heteroaromatic ring system containing in addition to carbon atoms one or more atoms selected from nitrogen, sulphur and oxygen, this ring system being optionally substituted, which comprises subjecting a compound of the formula ##STR2## wherein R.sub.

Abstract: Hydrocarbon utilizing microorganisms are immobilized on a plastic carrier in an aqueous nutrient medium to which a minor amount of a water-immiscible hydrocarbon substrate has been added. The water-immiscible hydrocarbon is preferably hexadecane or dodecylcyclohexane and the plastic carrier is preferably polytetrafluoroethylene. Presence of the water-immiscible hydrocarbon substrate results in increased loading of microorganisms on the carrier.