Abstract:
The invention discloses a myrtle polysaccharide P1, the separation method thereof and the use in preparing hypolipidemic drugs therefor, wherein the P1 contains 6.74% of ribose, 1.73% of rhamnose, 60.06% of arabinose, 3.54% of xylose, 5.64% of mannose, 13.16% of glucose, and 9.13% of galactose. The experiment result shows that the myrtle polysaccharide P1 has a certain ability to bind cholate in vitro. Taking cholestyramine as a positive control and the binding rate of cholestyramine to each cholate as 100%, the relative binding rate of the myrtle polysaccharide P1 to sodium taurocholate, sodium glycocholate and sodium cholate was 25.28%, 44.56%, and 50.10%, respectively.
Abstract:
An infrared reflection device includes a power supply assembly, a plurality of switches, and two relatively disposed light-transmitting conductive substrates packaging a regulating area. Each of the light-transmitting conductive substrates comprise a light-transmitting substrate and an electrode layer. The regulating area is filled with a liquid crystal mixture; the electrode layers are arranged on opposite surfaces of the two light-transmitting substrates; the electrode layer of at least one of the light-transmitting conductive substrates comprises at least two mutually independent electrode areas; and electrode areas of the same light-transmitting conductive substrate, after being respectively connected in series to the switches, are jointly connected in parallel to the same electrode of the power supply assembly.
Abstract:
A capacitive sensor and a preparation method thereof are disclosed. By disposing differential positive-negative electrode pair that include a first positive-negative electrode pair (4, 5, 6) and a second positive-negative electrode pair (11, 12, 13), and disposing a functional material layer (7, 8, 9) on the first positive-negative electrode pair (4, 5, 6), differential measurement is achieved, and thus the accuracy and sensitivity of the capacitive sensor are improved.
Abstract:
A visible light communication LED having a spiral inductance coil and a circular core is provided, comprising a sapphire substrate provided with a positive electrode welding spot and a negative electrode welding spot, and a plurality of LED cores deposited on the sapphire substrate. The negative electrode of a former core is connected with the positive electrode of a latter core, and the positive electrode of the first core and the negative electrode of the last core are respectively connected to the positive electrode welding spot and the negative electrode welding spot on the substrate. According to the present invention, each of the LED cores is surrounded by a spiral inductance coil, and a pin of one end of the spiral inductance coil is connected via a connecting wire with the negative electrode of an adjacent LED core, while the other end is directly connected with the positive electrode of the LED core that is surrounded by the spiral inductance coil.
Abstract:
A driving method for reducing a ghosting in an electrophoretic display is provided without prolonging driving waveform time and scintillation by improving a driving waveform design. The method comprises four steps: erasing an original image (S1); activating activity of electrophoretic particle (S2); activating electrophoretic particle (S3); and writing a new image (S4). At the electrophoretic particle activating (S3) stage, the electrophoretic particle activating is carried out for a preset duration time (tx), wherein the voltage of the driving waveform is 0V within the preset duration time (tx).
Abstract:
A display structure having a paper effect. The display structure comprises panel glass (1), a display layer (2) and substrate glass (3), wherein a paper layer (4) is provided under the substrate glass, and the panel glass (1), the display layer (2), the substrate glass (3) and the paper layer (4) are stacked in sequence. Also provided are an electrowetting display structure based on the display structure and a method for manufacturing the display structure having a paper effect. A piece of high-quality paper is placed under a substrate of the existing display structure as a diffuse reflection layer or a diffuse reflector, so as to provide required diffuse reflection and contrast approximate to paper. Compared with vacuum coating, the process is simpler, and avoids the expensive vacuum coating process, thereby greatly reducing manufacturing costs.
Abstract:
A frequency multiplier based on a low dimensional semiconductor structure, including an insulating substrate layer, a semiconductor conducting layer arranged on the surface of the insulating substrate layer, an insulating protective layer arranged on the surface of the semiconductor conducting layer, an insulating carving groove penetrating the semiconductor conducting layer, an inlet electrode arranged on the side surface of the semiconductor conducting layer, and an outlet electrode arranged on the side surface corresponding to the access electrode is provided. The semiconductor conducting layer comprises two two-dimensional, quasi-one-dimensional, or one-dimensional current carrying channels near to and parallel to each other. The frequency multiplier has advantages that the structure is simple, the process is easy to implement, no extra filter circuit needs to be added, dependence on material characteristics is little, and the selection range of materials is wide.
Abstract:
Provided is a method for preparing a battery separator coating material, the method comprising: dissolving PVDF and a covalent organic backbone material in an organic solvent and stirring same until uniform. The mass ratio of the PVDF to the covalent organic backbone material to N-methylpyrrolidone is 20:(70-85):(5-10). When the material is applied to preparation of a lithium ion battery separator, the problem of metal dissolution when a transition metal oxide is used as a positive electrode material can be effectively solved. The prepared separator can effectively adsorb metal ions and prevent the metal ions from being deposited on a negative electrode during charging and discharging processes, such that the cycle performance of a transition metal oxide positive electrode material is improved.
Abstract:
The present invention discloses a nucleic acid detection kit and a detection method based on photo-controlled CRISPR-Cas, wherein the kit comprises silent guide RNA and Cas protein; the silent guide RNA is formed by annealing hybridization of silent nucleotide and guide RNA; the guide RNA, designed according to a target nucleic acid sequence, includes two regions, i.e. a repetitive region and a spacer region; the silent nucleotide is completely complementarily paired with a the of the guide RNA, or is completely paired with a the of the guide RNA; the bases of the silent nucleotide are linked by PC linker; and the Cas protein is Cas12 protein or Cas13 protein. Although this method separates the nucleic acid amplification from the CRISPR-Cas detection in time, it can allow them to be completed in the same closed reaction tube, thereby avoiding the transfer process of uncapped reagent, ensuring that the detection is not affected by aerosol pollution while ensuring high detection sensitivity.
Abstract:
A noninvasive method and system for sleep apnea detection. The noninvasive method for sleep apnea detection comprises: collecting vital sign signals of a sleeping user; performing structured processing on the vital sign signals of the sleeping user to remove invalid signals to obtain a set of valid vital sign signals; extracting multi-dimensional morphological features from a sleep respiratory signal and performing feature training on multiple initial models of a classifier by means of the multi-dimensional morphological features to obtain a sleep breathing detection model; and inputting the set of valid vital sign signals into the sleep breathing detection model and performing signal processing to obtain probability data of the sleeping user experiencing sleep apnea; inputting the set of valid vital sign signals into a sleep breathing detection model and performing signal processing to obtain predicted probability of the sleeping user suffering from sleep apnea.