Abstract: A nutritional polypeptide having branched-structure with efficient broad-spectrum antibacterial and antifungal functions provided. The nutritional polypeptide having branched-structure is a polypeptide containing L-lysine or D-lysine moieties having a molecular weight of 3000-7000 Da. The branched-structured polypeptide has a highly efficient broad-spectrum antibacterial effect against bacteria, fungi and mycoplasma at low concentrations without developing resistance. Compared with conventional antimicrobials, the disclosed polypeptides have excellent biocompatibility, are non-cytotoxic, have no adverse effects on animals by intravenous injection, and can satisfy the requirements of intravenous antimicrobials in vivo. The degradation product is lysine, a nutrient essential to the organism, which has no toxic side effects. The branched-structured polypeptide is chemically synthesized throughout without the need of biofermentation processes, and is physically, chemically and biologically stable.

Abstract: A method for detecting a frozen screen, includes monitoring a change of a pixel in a video signal outputted to a display screen, and determining whether the display screen is frozen according to the change of the pixel and the policy. The pixel changes based on a policy when the display screen is not frozen.

Abstract: An antibacterial dressing for promoting scarless wound healing and a method for preparing the same provided. The dressing consists of 0.05-0.1 part by weight of hyperbranched polylysine anti-scar compound, 0.1-2.0 parts by weight of carbomer, 1-10 parts by weight of a thickener, 2-12 parts by weight of a humectant, 60-90 parts by weight of water and 1-15 parts by weight of a plant extract. The hyperbranched polylysine and the anti-scar drug are grafted and synthesized into a new compound, so that the antibacterial activity of the hyperbranched polylysine and the ability of the anti-scar drug to inhibit the scar formation of the wound are retained; meanwhile, a film with good air permeability and moisture retention can be formed on the skin surface through the film forming agent, so that the wound surface is kept in a moist environment, which is beneficial to wound healing and does not generate scars.

Abstract: The present application belongs to the technical field of polymer materials, and hyperbranched polylysine powder with a low polydispersity index and a production method thereof provided. The present application adopts a thermal initiation polymerization method, Compared with the traditional method, the production method of hyperbranched polylysine has the advantages of no additional steps of introducing and removing amino protecting groups, no need of activating carboxyl groups, easy purification of products, short production period, controllable molecular weight of products and low polydispersity index (1.01-1.2), and is suitable for industrial production of hyperbranched polylysine materials, especially medical-grade hyperbranched polylysine materials.

Abstract: The present application belongs to the technical field of polymer materials, and hyperbranched polylysine powder with a low polydispersity index and a production method thereof provided. The present application adopts a thermal initiation polymerization method, Compared with the traditional method, the production method of hyperbranched polylysine has the advantages of no additional steps of introducing and removing amino protecting groups, no need of activating carboxyl groups, easy purification of products, short production period, controllable molecular weight of products and low polydispersity index (1.01-1.2), and is suitable for industrial production of hyperbranched polylysine materials, especially medical-grade hyperbranched polylysine materials.

Abstract: Improved devices and methods for performing Fast Fourier Transforms.

Abstract: Embodiments of the present invention provide methods and systems for implementing a digital up converter (DUC) in an integrated circuit (IC). The method includes serializing a plurality of inputs to obtain a serial output and then increasing the sample rate of the serial output. Additionally, the method generates signal pairs (sine, cosine) for the desired carrier frequencies using time division multiplexing (TDM). Some of the signal pairs are delayed by one period within the TDM cycle to generate delayed signal pairs. The serial output is distributed, after the increase of the sample rate, to a plurality of filters to further increase the sample rate, each filter outputting a subset of the plurality of inputs using TDM. In one embodiment, the plurality of inputs includes 8 input pairs and the plurality of filters includes 6 Cascaded Integrator-Comb (CIC) filters operating in three-fold TDM.

Abstract: A programmable logic device can be configured as a fractional rate resampling filter capable of performing downsampling prior to upsampling without modifying the overall filter response. Input data may be received at a first sample rate and may be downsampled to generate downsampled data. Portions of the downsampled data may be respectively output to different filtering paths. Each filtering path may include a cluster of filter components that corresponds to different subfilters of the overall filter response and may be operable to receive and process the different portions of the downsampled data. Outputs of each cluster may be combined to generate output data at a second sample rate. The resampling filter structure can reduce the number of multiplier circuits used by allowing time-division multiplexing among different filter components.

Abstract: Embodiments of system and method for generating channel estimates in a wireless network are generally described herein. Other embodiments may be described and claimed. In some embodiments, a linear interpolator uses refined cross-correlation and autocorrelation estimates and pilot subcarrier estimates to generate channel estimates for the current OFDM data symbol.

Abstract: Embodiments of system and method for generating channel estimates in a wireless network are generally described herein. Other embodiments may be described and claimed. In some embodiments, a linear interpolator uses refined cross-correlation and autocorrelation estimates and pilot subcarrier estimates to generate channel estimates for the current OFDM data symbol.