40results about How to "Realize targeted regulation" patented technology

The invention discloses a method for extracting high-activity lignin from biomass and lignin extracted by the same. The method comprises the following steps: (a) obtaining high-purity and high-activity lignin from a biomass raw material ground to 20-60 meshes by using an alcohol organic solvent through an acid liquid precipitation way; and (b) hydrolyzing the residue obtained in the step (a) with cellulase at 50 DEG C for 72h to obtain high-yield fermentable glucose for bioethanol preparation. In the invention, pretreatment using isopropyl alcohol is creatively proposed under specific conditions to break a lignin-carbohydrate bond and a beta-O-4-aryl ether bond so as to efficiently separate and extract low-molecular weight high-activity lignin, and theoretical basis and technical support are provided for further high-value utilization. Moreover, the pretreatment method remarkably improves the enzymolysis efficiency of the fiber raw material and provides an effective way for next bioethanol production.

The invention relates to the technical field of environmental monitoring, in particular to an intelligent building indoor environment monitoring system, comprising an inspection robot, a sensor group arranged in the building, a controller, a remote server, and uniquely numbered RFID tags arranged in different areas, Each RFID tag contains the environmental control standard of the current area; the inspection robot is used to realize the inspection of the working conditions of the sensor group and the inspection of the abnormal environment area fed back by the current sensor group; the sensor group is composed of several sensor nodes , based on the pressure-sensitive adhesive paste arrangement, and each sensor has a built-in fault reporting module, which is used to report sensor faults in the form of short message warning. The present invention can realize the comprehensive monitoring of the indoor environment of the building, fully consider the environmental control objectives of different areas, and effectively improve the environmental quality and personnel satisfaction.

The invention discloses a biomedical coating on the basis of graphene and titanium dioxide and a method for preparing the biomedical coating. The biomedical coating is a single-layer graphene and titanium dioxide composite coating. The method for preparing the biomedical coating includes transferring the single-layer graphene on the surfaces of substrates; coating titanium dioxide nano-dots on thesurfaces of the graphene by the aid of dip-coating processes. The biomedical coating and the method have the advantages that the biocompatibility of the substrates can be improved by the biomedical coating formed by the titanium dioxide nano-dots and the graphene, and adhesion of proteins and cells on the surfaces of the substrates can be improved; more importantly, the biomedical coating with the single-layer graphene and the titanium dioxide nano-dots is excellent in ultraviolet light and visible light response, surface charge of the biomedical coating can be regulated, and accordingly thecells adhered on the substrates can be hopefully directionally regulated and controlled; the method for preparing the biomedical coating on the basis of the graphene and the titanium dioxide is simpleand is easy to implement.

The invention relates to a sludge anaerobic digestion additive and a method for promoting methane production through the additive. The method includes the steps of putting 0.1-1.0% of dry papermaking white mud in sludge to be stirred with water to obtain a mixture material with the pH value of 7.5-8.0 and the solid content of 5-15%, putting the mixture material in an anaerobic reactor, and conducting sludge anaerobic digestion over stirring at a constant temperature of 35-38 DEG C or 53-55 DEG C. Papermaking white mud produced in sulfate method pulping, papermaking and causticizing procedures serves as the sludge anaerobic digestion additive, and the dynamic balance of sludge hydrolytic acidification and methanation is regulated and controlled in an oriented mode; the digestion time is shortened by 15-25%, and the methane yield is increased by 40-80%. Operation is easy, running expenses are low, and the pollution of papermaking white mud and sludge to the environment is reduced; after residues produced after sludge anaerobic digestion are subjected to solid-liquid separation, biogas residues serve as a soil conditioner and are directly applied to soil, and biogas slurry is directly used as water-soluble fertilizer.

The invention discloses a method for promoting microbes to synthesize docosahexaenoic acid (DHA) by an exogenous additive factor. The method comprises the following steps of: inoculating the microbes into a fermentation culture medium for fermentation to synthesize the DHA, adding the exogenous additive factor into the fermentation culture medium before the fermentation synthesis, and / or adding aprecursor matter for synthesizing fatty acid during the fermentation synthesis, wherein the microbes may be any one of thraustochytrium, schizochytrium and crypthecodium cohnii; the exogenous additive factor is any one or the combination of several of acetic acid, citric acid and simvastatin; and the precursor matter for synthesizing the fatty acid is the acetic acid. In the invention, under simple and effective fermentation control, substrate conversion efficiency is improved, operation is simple, no extra labor and equipment are added, and the synthesizing concentration and production strength of a target product can be improved by just relatively low additive investment, so that production cost is reduced. And the method is pollution-free, increases no manpower and material resources, reduces the cost, is simple and convenient and creates economical benefit.

The invention discloses a density gradient microstructure, a method for preparing a density gradient microstructure, and a magnetically controlled switch, and relates to the field of microfluidic technology, including a substrate, the substrate is provided with a plurality of array regions, and each of the array regions It includes a number of evenly distributed microcolumns, the spacing of the microcolumns in different array regions increases sequentially from one end of the base body to the other end of the matrix body, and the microcolumns are all magnetic. The micropillars of the density gradient microstructure of the present invention form dense and dense array regions according to certain rules, and the micropillars can be directional deflected under the condition of an external magnetic field. By controlling the strength of the magnetic field, the deflection angle of the microcolumn can be controlled, and then the spreading direction of the liquid film can be controlled, so that the directional control of the liquid can be realized. The invention can realize real-time control of the liquid spreading direction in the field of microfluidics, and provides new ideas for microfluidics, directional screening of drugs, and design of microfluidics chips.

The invention belongs to the technical field of graded utilization of low-rank coals and biomasses and specifically relates to a graded utilization device and method for low-rank coals and biomasses based on chemical chains. A reduced oxygen carrier and low-rank coal particles or biomass particles are mixed to be subjected to a rapid pyrolysis reaction, and the reduced oxygen carrier generates anoxidized oxygen carrier; pyrolysis cokes, the oxidized oxygen carrier and a pyrolysis gas-liquid phase product are separated at the dense phase stage of a two-stage pyrolysis reactor; the pyrolysis cokes and the oxidized oxygen carrier obtained by separation and an oxidized oxygen carrier from an air reactor simultaneously enter a gasification reactor for a gasification reaction, and the oxidizedoxygen carrier is reduced into the reduced oxygen carrier; and the reduced oxygen carrier respectively enters a two-stage air reactor and the two-stage pyrolysis reactor through a distributor. In thewhole process, the graded and efficient recycle of solid carbon-containing raw materials with relatively high volatile components such as the low-rank coals and the biomasses is realized, and meanwhile, pyrolysis reaction control, gradient utilization of energy and internal separation of a reaction product are realized.

The invention relates to a method for separating cow milk beta-casein and whey protein at the low temperature through microfiltration to simulate composition of human lactoprotein. Skim milk, whole milk, dried skim milk, concentrated milk protein powder and the like are taken as raw materials, decalcification pretreatment is performed with the adoption of citrate, glucono-delta-lactone and other chelating agents or an acidifier, microfiltration and filter wash are performed with the adoption of a ceramic membrane or a polyethersulfone membrane and the like under the low-temperature (0-15 DEG C) condition, beta-casein and whey protein are selectively enriched into a permeating liquid, the permeating liquid is subjected to spray drying and dewatering after lactose and mineral substances are removed through ultrafiltration and concentration, and high-protein powder containing rich beta-casein and whey protein is prepared. An adopted technical process has the characteristics of being environment-friendly, efficient, high in operability, good in safety and the like and is suitable for large-scale industrial production. The obtained compound protein powder can serve a novel functional lactoprotein ingredient to replace whey protein and is used for research and development of infant food such as formula milk powder and the like, so that the protein molecule composition of the compound protein powder is closer to that of human lactoprotein.