Abstract:
Methanol-tolerant cathodic catalysts were prepared by depositing platinum nanoparticles and iron macrocycles on a carbon substrate. The order of depositing the iron and platinum on the carbon substrate were varied to form a (Fe-Pt)/C catalyst and a (Pt-Fe)/C catalyst. Different sintering temperatures were investigated to determine the heating effect on methanol tolerance. Oxygen reduction with and without the presence of methanol on these new catalysts was evaluated by using a rotating disk electrode system.
Abstract:
Novel proton exchange membrane fuel cells and direct methanol fuel cells with nanostructured components are configured with higher precious metal utilization rate at the electrodes, higher power density, and lower cost. To form a catalyst, platinum or platinum-ruthenium nanoparticles are deposited onto carbon-based materials, for example, single-walled, dual-walled, multi-walled and cup-stacked carbon nanotubes. The deposition process includes an ethylene glycol reduction method. Aligned arrays of these carbon nanomaterials are prepared by filtering the nanomaterials with ethanol. A membrane electrode assembly is formed by sandwiching the catalyst between a proton exchange membrane and a diffusion layer that form a first electrode. The second electrode may be formed using a conventional catalyst. The several layers of the MEA are hot pressed to form an integrated unit. Proton exchange membrane fuel cells and direct methanol fuel cells are developed by stacking the membrane electrode assemblies in a conventional manner.
Abstract:
A light module assembly (100) includes a lens (104), a circuit board (200), and an overmold body (102). The lens (104) includes one or more pooling structures (218, 220) formed by transversely oriented exterior surfaces (402, 404) of the lens (104). The circuit board (200) is coupled to the lens (104) and has one or more light-generating devices (106) disposed on the circuit board (200). The overmold body (102) is coupled to the lens (104) to form an interface (214) between the lens (104) and the overmold body (102). The interface (214) between the lens (104) and the ovemold body (102) includes or defines moisture ingress path (216) into the circuit board (200). The one or more pooling structures (218, 220) prevent passage of moisture along the moisture ingress path (216) past the one or more pooling structures (218, 220) to the circuit board (200).
Abstract:
A computer-implemented method for controlling adaptive streaming media access includes requesting a first portion of media content from a content server and requesting authorization corresponding to a second portion of media content from an authorization server. The method further includes submitting evidence to the authorization server that the first portion of media content has been received by a client device and receiving a representation of authorization to access the second portion of media content in response to the evidence complying with a requirement. The method also includes requesting the second portion of media content from the content server, presenting the representation of authorization to the content server, and receiving the second portion of media content in response to the representation of authorization being accepted by the content server. The method can effectively control client behavior to prevent the client from skipping past required media content, such as a commercial advertisement.
Abstract:
The invention relates to the prevention and treatment of metabolic abnormalities characterized by abnormal glucose metabolism, including diabetes mellitus and new onset diabetes mellitus through the use of fibroblast activation protein (FAP) selective inhibitors.
Abstract:
A method and system for integrity certification and verification in a computer environment based on characteristics and behaviors of one or more applications, systems or system components as compared with a profile of characteristics and behaviors, including determining a behavior integrity profile (BIP) specifying characteristics and behaviors of one or more applications, systems or system components; determining based on the BIP whether or not characteristics and behaviors of one or more applications, systems or system components are compliant with characteristics and behaviors defined in a behavior integrity profile specification; and determining access rights to the one or more applications, systems or system components based on the step of determining the compliance.
Abstract:
A method, system and device for transferring rights adapted to be associated with items from a rights supplier to a rights consumer, including obtaining a set of rights associated with an item, the set of rights including meta-rights specifying derivable rights that can be derived from the meta-; determining whether the rights consumer is entitled to the derivable rights specified by the meta-rights; and deriving at least one right from the derivable rights, if the rights consumer is entitled to the derivable rights specified by the meta-rights, wherein the derived right includes at least one state variable based on the set of rights and used for determining a state of the derived right.
Abstract:
The present invention relates to biofilm genes, their polypeptides, and the use of such genes, polypeptides and control regions in determining compositions for use in the disruption of biofilms and the treatment of disease. The identified compositions regulate the expression of the biofilm genes or modulate the activity of their protein products.
Abstract:
Methods and systems to train artificial intelligence modules protect privacy of sensitive data by virtue of the fact that the data source (1) extracts blocks of partial data from the source item of content (11) and distributes the extracted partial data to a plurality of processing nodes (5) in an intermediate processing system (2). The processing nodes each perform an initial portion of the training process, for example by performing a convolution of the partial data, to produce a partial model (PM). The partial models (PM) are transmitted to a merging module (10) which amalgamates them and completes the training process to generate a global model (GM) for the AI task.