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 touch control arrangement is arranged for a container having a foldable cover being folded between an opened position and a closed position via an actuation unit. The touch control arrangement includes a power source and a touch actuator electrically linked to the power source, wherein the touch actuator is located out of the storage cavity of the container body and is arranged in such a manner that when the touch actuator is activated by a presence of a touch, the actuation unit is actuated to move the foldable cover from the closed position to the opened position.
Abstract:
Exemplary embodiments provide semiconductor devices including high-quality (i.e., defect free) group III-N nanowires and uniform group III-N nanowire arrays as well as their scalable processes for manufacturing, where the position, orientation, cross-sectional features, length and the crystallinity of each nanowire can be precisely controlled. A pulsed growth mode can be used to fabricate the disclosed group III-N nanowires and/or nanowire arrays providing a uniform length of about 10 nm to about 1000 microns with constant cross-sectional features including an exemplary diameter of about 10-1000 nm. In addition, high-quality GaN substrate structures can be formed by coalescing the plurality of GaN nanowires and/or nanowire arrays to facilitate the fabrication of visible LEDs and lasers. Furthermore, core-shell nanowire/MQW active structures can be formed by a core-shell growth on the nonpolar sidewalls of each nanowire.
Abstract:
Disclosed are an object detection method and an object detection device. The object detection method comprises a step of obtaining plural detection results of a current frame according to plural object detection methods; a step of setting initial probabilities of the plural detection results of the current frame; a step of calculating a movement frequency distribution diagram representing movement frequencies of respective pixels in the current frame; a step of obtaining detection results of a previous frame; a step of updating the probabilities of the plural detection results of the current frame; and a step of determining a final list of detected objects based on the updated probabilities of the plural detection results of the current frame.
Abstract:
A sealed transmission device for a helium space of a high temperature gas cooled reactor and a drive device thereof are disclosed. The helium space (1) is enclosed by a chamber body (2), a pressure-bearing casing (3), a fastener (4) and a sealing element (5). A transmission member (8) is connected with an executing member (6) inside the helium space (1) and a motive member (7) outside the helium space (1) and transmits movements between them. The transmission member (8) is a magnetic shaft coupling which includes the pressure-bearing casing (3), a driving magnetic component (9) arranged outside the pressure-bearing casing (3) and a driven magnetic component (10) arranged inside the pressure-bearing casing (3). The motive member (7) and the driving magnetic component (9) are connected to each other to form a driving member, and the executing member (6) and the driven magnetic component (10) are connected to each other to form a driven member. The present invention can seal the thermal state radioactive helium space fully, and satisfy controllability and reliability requirements for the operations, such as big torque, long time and continuity, reciprocating rotation and frequent start and stop, etc.
Abstract:
A method of manufacturing an organic montmorillonite is disclosed. The manufacturing method includes the steps hereinafter. A montmorillonite solution and an intercalation agent solution are prepared respectively. The montmorillonite solution and the intercalation agent solution are mixed at high temperature to form an organic montmorillonite solution. The organic montmorillonite is purified to obtain an organic montmorillonite solution.
Abstract:
Nanowire and larger, post-based HEMTs, arrays of such HEMTs, and methods for their manufacture are provided. In one embodiment, a HEMT can include a III-N based core-shell structure including a core member (e.g., GaN), a shell member (e.g., AlGaN) surrounding a length of the core member and a two-dimensional electron gas (2-DEG) at the interface therebetween. The core member including a nanowire and/or a post can be disposed over a doped buffer layer and a gate material can be disposed around a portion of the shell member. Exemplary methods for making the nanowire HEMTs and arrays of nanowire HEMTs can include epitaxially forming nanowire(s) and epitaxially forming a shell member from each formed nanowire. Exemplary methods for making the post HEMTs and arrays of post HEMTs can include etching a III-N layer to form III-N post(s) followed by formation of the shell member(s).
Abstract:
For applications with very small data activities, connection of a UE to a wireless network for sending or receiving such small data traffic increments via conventional connection set-up processes is quite inefficient in terms of spectral resource utilization. The invention provides a new connectionless methodology for transmission of such small data increments between a UE and a serving eNB. In particular, the invention methodology contemplates identifying a set of preamble sequences among the pool of preamble sequences provided for access requests from a UE to an eNB via the Random Access Channel as corresponding to a request from the UE for access to transmit an increment of data smaller than a predetermined threshold data size. When a UE has data traffic to transmit of a size smaller than the predetermined threshold size, it selects one of the preamble sequences in the identified set and sends an access request, using the selected preamble sequence, to a serving eNB via the Random Access Channel. Upon receipt of the access request from the UE, the eNB determines an appropriate RF resource for the data increment sought to be transmitted by the UE, based on the use of the selected preamble sequence sent by the UE, and schedules an uplink connection for the transmission of that data increment by the UE.
Abstract:
In one embodiment, a plurality of queues are established corresponding to each of a plurality mobiles, respectively. Data packets associated with the plurality of mobiles are received at a network element. Each received data packet is assigned to a corresponding one of the plurality of queues. A determination operation is performed on a selected one of the plurality of queues to determine whether or not to send one or more packets of each queue from the network gateway element. The determination operation is performed based on a comparison between a packet size of a head packet and an adaptive transmission threshold value associated with the selected queue. The adaptive transmission threshold value is a value that is changed based on an amount data sent from the selected queue. The head data packet being an earliest received data packet in the selected queue.
Abstract:
Substituted triazole compounds and pharmaceutical compositions thereof are presented. Also presented are methods for treating a pathology linked to a hyperproliferative disorder by administering the substituted triazole compounds to a patient in need thereof.