摘要:
A gallium nitride (GaN) based light emitting diode (LED), wherein light is extracted through a nitrogen face (N-face) of the LED and a surface of the N-face is roughened into one or more hexagonal shaped cones. The roughened surface reduces light reflections occurring repeatedly inside the LED, and thus extracts more light out of the LED. The surface of the N-face is roughened by an anisotropic etching, which may comprise a dry etching or a photo-enhanced chemical (PEC) etching.
摘要:
A method and a system for transmitting data by a transmitter over a channel having a predetermined channel quality estimate, comprises the steps of splitting (S2P) input data stream (S40, S60, S80) to be transmitted into a plurality of data sub-streams (S40a, S40b, S40c); processing (SYM1, SYM2, SYMj) each of the plurality of data sub-streams (S40a, S40b, S40c) into a plurality of symbol subsets (S41, S42, S43) by selecting a certain scheme of coded-modulation (BPSK, QPSK, 16-QAM); processing, separately, each of the plurality of symbol subsets (S41, S42, S43), via a plurality of separate Discrete Fourier Transforms (DFT1, DFT2, DFT3), herein after denoted as DFTs, to obtain a plurality of DFT-precoded data sub-streams (S44, S45, S46); allocating each DFT-precoded data sub-stream (S44, S45, S46) in a frequency resource block (RB1, RB2, RB3), via a sub-carrier mapping module (SCM), so that for each data sub-stream (S40a, S40b, S40c) the selected scheme of coded-modulation (BPSK, QPSK, 16-QAM) is chosen in dependence of the values of the channel quality estimate at the frequencies of its own allocated frequency resource block (RB1, RB2, RB3).
摘要:
A visual editor for generating a custom email message. An editor interface may display an approximation of an email message. A user may customize content and layout of an email message through the editor interface. A user interface system may track such customizations to enable faster remote operations to be performed on content of the email message. A plurality of substantially modular renderers may enable a plurality of different output representations to be generated from a single stored representation of the email message.
摘要:
A gallium nitride (GaN) based light emitting diode (LED), wherein light is extracted through a nitrogen face (N-face) (42) of the LED and a surface of the N-face (42) is roughened into one or more hexagonal shaped cones. The roughened surface reduces light reflections occurring repeatedly inside the LED, and thus extracts more light out of the LED. The surface of the N-face (42) is roughened by an anisotropic etching, which may comprise a dry etching or a photo-enhanced chemical (PEC) etching.
摘要:
A material for storage and retrieval of hydrogen is provided. The material comprises a matrix material and a metallic catalyst disposed within the matrix material, the catalyst comprising at least one metal component and at least one Group 13 element, wherein the catalyst comprises a disordered phase. The hydrogen storage material has a hydrogen desorption rate of at least about 3 weight percent per hour at a temperature of about 150° C. A method for making the material is also provided. The method comprises The method comprises providing a metallic catalyst comprising at least one metal component and at least one Group 13 element, wherein the catalyst comprises a disordered phase; providing a matrix material; and homogenizing the catalyst with the matrix material to form a material comprising (i) 43the matrix material and (ii) the catalyst disposed within the matrix material.
摘要:
A novel class of proton exchange membrane materials, sulfonated poly(phthalazinones), were prepared by modification of poly(phthalazinone). Sulfonation reactions were conducted at room temperature using mixtures of 95-98% concentrated sulfuric acid and 27-33% fuming sulfuric acid with different acid ratios in order to get SPPEK with degree of sulfonation (DS) in the range of 0.6 to 1.0. The presence of sulfonic acid groups was confirmed by FT-IR analysis, and the DS and structures were characterized by NMR. The introduction of sulfonic groups into the polymer chains led to an increase in the glass transition temperature and a decrease in the decomposition temperature. Membrane films were cast from solution in N,N-dimethylformamide or N,N-dimethylacetamide. Water uptakes and swelling ratios of the membrane films increased with DS and sulfonated polymers with DS>1.2 were water soluble at 80° C. Proton conductivity increased with DS and temperature up to 95° C., reaching 10−2S/Cm.
摘要:
A computer-implemented method is provided for generating at least one custom email message based, at least in part, on input from a user of a computer system, the computer system having a display. The method comprises acts of presenting, to the user in the display of the computer system, an editor interface displaying an initial approximation of an email message comprising a plurality of content blocks; accepting, through the editor interface, at least one customization of at least one of a content of at least one of the plurality of content blocks and a layout of the plurality of content blocks; and displaying through the editor interface a customized approximation of the email message based, at least in part, on the initial approximation of the email message and the at least one customization.
摘要:
A visual editor for generating a custom email message. An editor interface may display an approximation of an email message. A user may customize content and layout of an email message through the editor interface. A user interface system may track such customizations to enable faster remote operations to be performed on content of the email message. A plurality of substantially modular renderers may enable a plurality of different output representations to be generated from a single stored representation of the email message.
摘要:
A server configured to create a learning trail application for a geographic area. The server includes a processor configured to: provide a template having a plurality of fields including a location field configured to receive the geographic area and an image archive field configured to receive images; receive template data for placement as the content of one or more of the plurality of fields; receive instructions for determining the placement of the template data into one or more of the plurality of fields; and generate the learning trail application from the template with the received template data. During execution of the application, the application is configured to receive at least one input image, determine whether a match exists between the input images and the content in the image archive field and display the template data associated with the content in the image archive field, when a match exists.