Abstract: Provided in the present invention is a method for synthesizing 2,7-dimethyl-2,4,6-octatriene-1,8-dialdehyde.

Abstract: A device for testing a corrosion inhibitor, the device including: a circulating cooling water tank; a circulating water pump; a flowmeter; a five-port glass tube; a working electrode; a reference electrode; an auxiliary electrode; a heating rod; and an electrochemical workstation. The circulating water pump is connected to the circulating cooling water tank. The heating rod is fixed inside the circulating cooling water tank. The water inlet of the flowmeter is connected to the circulating water pump. The water outlet of the flowmeter is connected to the water inlet of the five-port glass tube. The water outlet of the five-port glass tube is connected to the circulating cooling water tank. The working electrode the reference electrode, and the auxiliary electrode are connected to the electrochemical workstation; and the electrochemical workstation is connected to a host computer.

Abstract: Technologies are generally described for techniques useful in an interferometer system. In some examples, a system may include a first waveguide effective to propagate a first wave in a first mode. In some examples, the system may include a second waveguide effective to, in response to the first wave, propagate second and third waves in second and third modes, respectively. In some examples, the second waveguide may be effective to reflect the second and third waves off a reflection surface to produce first, second, third and fourth reflected waves. In some examples, the second waveguide may be effective to propagate the first and third reflected waves in the second mode and propagate the second and fourth reflected waves in the third mode.

Abstract: The present invention provides a method for desorbing and regenerating a butanol-adsorbing hydrophobic macroporous polymer adsorbent, comprising: successively eluting the hydrophobic macroporous polymer adsorbent with butanol adsorbed therein using a water soluble low-boiling-point polar solvent and water. The method provided in the present invention has a simple process, a short separation time, easy, fast and complete desorption and regeneration, low equipment investment and pollution, and reduced energy consumption, and therefore production is easy on a large scale.

Abstract: A method for removing antibiotic resistance genes (ARGs). The method includes the following steps: 1) coagulation and sedimentation of waste water; 2) biochemical treatment; 3) disinfection by peracetic acid; 4) sterilization by high pressure CO2; 5) photocatalysis by nano-titanium dioxide (TiO2); and 6) depositing.

Abstract: The present invention provides preparation methods of protein nanoparticles for in vivo delivery of pharmacologically active agents, wherein said methods are to encase pharmaceutically active agents into proteins or peptides to form nanoparticles by unfolding the protein, and subsequently refolding or assembling the protein to produce a pharmacologically active agent encased within a protein nanoparticle.

Abstract: A method for synthesizing a medical grade biodegradable material, poly(lactic-co-glycolic acid), copolycondensation of lactic acid and glycolic acid catalyzed by biomass creatinine. The present invention uses commercialized creatinine (a type of biomaterial organic guanidine compounds—the arginine metabolite creatinine (CR) in human body) as the catalyst and industrial lactic acid (LA, mass content 85%, aqueous solution) and glycolic acid (GA, 95%) as the monomer to synthesize the high biosafety of medical poly(lactic-co-glycolic acid) in terms of two steps polycondensation without solvent.

Abstract: Disclosed are a method and a system for remote wake-up and status check, with a wake-up signal generating unit generating and transmitting a wake-up signal to wake up an electricity supply unit of a remote device to operate normally and provide electricity for the remote device. The wake-up signal has an assigned electric voltage with specific characteristics for detection by the electricity supply unit while in power-off mode and, upon signal detection, the electricity supply unit wakes up to provide normal electric voltage output. The wake-up signal generating unit determines, according to an electric current on a wake-up signal feed line, whether the remote device is in an active mode. A low wake-up energy consumption enables system wake-up and a true powered-off sleep mode.

Abstract: This disclosure provides a method of making polylactic acid using carbon dioxide adducts of carbenes, wherein the adducts of carbenes have a structure represented by formula (I) as follows:

Abstract: A contact reaction tower, including: a central cylinder; and an outer cylinder. Lift pipes and a water inlet pipe(s) are installed in the central cylinder, reflux windows are formed on the wall of the central cylinder, and the water flow circulation between the central cylinder and the outer cylinder is realized through the lift pipes, the water inlet pipe(s), and the reflux windows, such that the water flow internal circulation of the whole contact reaction tower is realized. The contact reaction tower is sealed in its entirety from the outside environment, and a gas guide pipe is installed at the top of the contact reaction tower.

Abstract: Disclosed is a preparation method of the lycopene intermediate 3-methyl-4,4-dialkoxy-1-butaldehyde. The preparation method comprises the following steps: (1) reacting 2-methyl-3,3-dialkoxy-1-halopropane with magnesium powder in the solvent of anhydrous tetrahydrofuran at a temperature of 45˜65° C. to generate a mixture of Grignard reagents under the protection of an inert gas; and (2) adding N,N-disubstituted carboxamide to the mixture of Grignard reagents and reacting at a temperature of 10° C.˜35° C. to obtain 3-methyl-4,4-dialkoxy-1-butaldehyde. The process route of the present invention is simple and direct, the operation is easy, the conditions are mild and the yield is good, and thus the invention has commercial value.

Abstract: A BOTDA system that combined optical pulse coding techniques and coherent detection includes a narrow linewidth laser, two polarization-maintaining couplers, microwave generator, two electro-optic modulators (EOMs), fiber under test, an optical circulator, a 3 dB coupler, a polarization scrambler, a pulse generator, a balance photodetector, an electrical spectrum analyzer, digital signal processing unit and a frequency shifter. The optical pulse coding techniques and coherent detection are simultaneously used in the invented system, which can be enhance the signal-to-noise ration (SNR), the measuring accuracy and the sensing distance of BOTDA. Moreover, the proposed system has the capacity of break interrogation.

Abstract: Provided are a fructosylated mangiferin, a preparation method therefor and a use thereof, wherein the fructosylated mangiferin has a structural formula represented by the following formula (I), the method for preparing the fructosylated mangiferin includes adding a substance with fructosylating enzymatic activity to a transformed liquid containing mangiferin for biotransformation reaction, so as to convert the mangiferin into the fructosylated mangiferin, wherein the transformed liquid contains the mangiferin and a glycosyl donor; as well as a use of the fructosylated mangiferin in preparation of a medicament for treatment of tumor-related diseases.

Abstract: The present invention provides a flexible nanoimprint mold which can fabricate sub-15 nm ultra fine structures on either planar or curved substrates. The mold comprises a top ultra-thin rigid layer of imprint patterning features and a bottom thick flexible layer of polymer elastomer. The two distinct layers are preferably integrated via chemically bonding. The top layer of the mold enables a sub-15 nm resolution of pattern fabrication and the bottom layer affords a conformal contact to planar or curved surface of substrates. The methods for fabricating the same are disclosed.

Abstract: Disclosed is an internal circulation resin ion exchange adsorption reactor with a mechanical stirrer. The upper part ?˜? of the reactor main body is an open cylinder and the lower part ?˜? is a cone-shaped body with a slope of 30°±10°. A bell-jar shaped reaction slot with a turbine water stirrer inside is located in the center of the reactor main body. The reactor main body is equipped with a cylindrical guide plate. A water collection weir, an inclined tube separator and an annular resin collection hopper are located between the shell of the reactor main body and the guide plate. The reactor is equipped with a water inlet pipe and a water outlet pipe. A resin removal pipe is connected with the annular resin collection hopper and a resin desorption slot respectively, and a regenerated resin reflux pipe is connected to the bell-jar shaped reaction slot.

Abstract: This invention describes the structure and the fabrication method of a flexible memory. The flexible memory includes eight layers. The three function layers are a flexible layer of hall unit, a flexible layer of horizontal lines, and a flexible layer of vertical lines. The main fabrication process of the flexible memory includes the following: the function layers are made on the hard substrates by the traditional nano-micro methods, and then the function layers are transferred on the flexible substrates, finally the whole layers are packaged to form the flexible memory.

Abstract: Polymer compositions based on polyaniline and carbonyl-functionalized polysilicones, and methods for making these polymer compositions are disclosed in the present application. The polymer compositions have, for example, good solubility, processability, mechanical performance and conductivity.

Abstract: Techniques for comparing 3D models are provided. A method for comparing 3D models includes obtaining a first skeleton of a first 3D model, obtaining a second skeleton of a second 3D model, and calculating similarity between the first and the second 3D models based on distance, angle, and inter-position related global constraints of the first and the second skeletons.

Abstract: A direct polycondensation method for medical biodegradable polylactic acid (PLA). The invention uses commercialized creatinine (a type of biomaterial organic guanidine compounds—the arginine metabolite creatinine in human body) as the catalyst and industrial lactic acid (mass content 85-90%, aqueous solution) as the monomer to synthesize the PLA in terms of second polycondensation without solvent. Instead of tin catalysts having cytotoxicity, the catalyst used in the invention has high biocompatibility and biosafety. The synthesized PLA does not contain any metal and other toxic components; therefore, it can be used as the carrier for targeting drugs and controlled release drugs. The green catalyst and green processing method (no solvent applied and no toxic products produced) are used to synthesize the green biodegradable PLA with high biosafety. The molecular weight distribution for all synthesized products is narrow and the molecular weight is controllable within 1.5-3.0×104.

Abstract: Provided herein are novel chiral sulfinamide and imine compounds. Also provided herein are methods of synthesizing novel chiral sulfinamide and imine compounds comprising simplified purification methods when compared to prior methods. The novel chiral sulfinamide and imine compounds are useful, for example, in the synthesis of complex natural products and pharmaceutical important compounds.