Abstract:
Systems and methods for image classification are disclosed. In one aspect, embodiments of the present disclosure include a method, which may be implemented on a system, of selecting a predetermined number of training images that are representative of images associable with a particular topic category. One embodiment can include, extracting training image features from the training images, generating a set of descriptors characteristic of images associable with the particular topic category, and generating the particular set of predetermined models that correspond to the particular topic category based on the set of descriptors.
Abstract:
Esters of 4,5-disubstituted-oxy-2-methyl-3,6-dioxo-cyclohexa-1,4-dienyl alkyl acids were prepared chemically and/or enzymatically. Depending upon the ester, improved melanocyte cytotoxicity was achieved. Improved cytotoxicity characteristics are consistent with ester analogs being more physiologically compatible and less irritating to skin than their corresponding acids.
Abstract:
A composition, process of preparation, and utility of salts of fatty acid esters of amino-alcohols such as dimethylaminoethanol (DMAE) as emulsifiers useful for formulating with lipids and waxes is described. DMAE fatty acid esters were prepared enzymatically in the absence of added solvent, and then salified directly with carboxylic acids to form the salts. The compounds were used to make stable emulsions with a variety of cosmetically acceptable lipids.
Abstract:
Systems and methods for advertisement delivery optimization are disclosed. In one aspect, embodiments of the present disclosure include a method, which may be implemented on a system, of identifying multimedia content associated with a web-user. One embodiment can include, analyzing the multimedia content to retrieve a set of descriptors, comparing the set of descriptors with metadata of a plurality of advertisements, selecting a candidate pool of advertisements from the plurality of advertisements based on relevancy indicated by the comparison, and presenting at least a portion of the candidate pool of advertisements to the web-user.
Abstract:
Systems and methods for image classification are disclosed. In one aspect, embodiments of the present disclosure include a method, which may be implemented on a system, of selecting a predetermined number of training images that are representative of images associable with a particular topic category. One embodiment can include, extracting training image features from the training images, generating a set of descriptors characteristic of images associable with the particular topic category, and generating the particular set of predetermined models that correspond to the particular topic category based on the set of descriptors.
Abstract:
Long-chain esters of retinol are prepared via a chemoenzymatic process from short-chain retinyl esters and an appropriate long-chain acid or ester in the presence of an enzyme. Use of various additives enhance the yield of the desired ester and facilitated its purification.
Abstract:
The present invention relates to highly enantiomerically pure lactam-substituted propanoic acid derivatives and methods of making and using therefor. The invention involves a multi-step synthesis to produce the lactam compounds. In one step of the reaction sequence, asymmetric hydrogenation of a lactam-enamide was performed to produce an intermediate that can ultimately be converted to a series of pharmaceutical compounds. The invention also contemplates the in situ synthesis of an intermediate of the multi-step synthesis, which provides economic advantages to the overall synthesis of the lactam compounds.
Abstract:
The present invention discloses a method comprising the steps of; a) forming in an aqueous solution a hydroxamic acid from a hydroxylamine free base and anhydride having the formula (RCO).sub.2 O wherein R is H or a substituted or unsubstituted C.sub.2-6 alkyl, C.sub.2-6 alkenyl, C.sub.6-10 aryl, or C.sub.4-10 heteroaryl; and b) treating said hydroxamic acid with an alkylating agent in the presence of at least one proton scavenger under conditions sufficient to consume substantially all of said alkylating agent to form an O-substituted hydroxamate. The protection and alkylation are readily effected in water (with no alcohol co-solvent) without the need for phase-transfer catalysis and with little hydrolysis of the alkylating agent.