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The present invention discloses a preparation method for a composite oxide carrier. According to the method of the present invention, a composite oxide dry glue is prepared by the following steps, wherein the steps comprise: firstly preparing an aluminum hydroxide wet filter cake and an aqueous solution containing an IVB group metal complex; adding the wet filter cake to the complex solution, andstrongly stirring; carrying out filtering and drying to obtain the composite oxide dry glue. With the composite oxide dry glue prepared by the method, most of the IVB group metal oxide can be distributed on the surface of aluminum oxide so as to reduce the influence on the pore structure of the aluminum oxide, improve the assistant catalysis effect of the IVB group metal oxide, and improve the pore structure and the surface performance of the composite oxide carrier. In addition, with the present invention, the sulfurization performance of the catalyst adopting the composite oxide carrier as the carrier can be improved, and the loaded active metal is easy to reduce.

The invention discloses a bimetal methanation catalyst for the removal of micro carbon monoxide from a hydrogen-rich gas and a preparation method thereof. The bimetal methanation catalyst contains active components, namely nickel oxide and ferric oxide, loaded on an oxide carrier and an assistant, wherein the assistant is at least one element selected from the main group I, the main group II, the subgroup I, the subgroup III, the subgroup VI and the subgroup VIII of the periodic table, and the oxide carrier is alumina, titanium dioxide, zirconium dioxide and silicon dioxide or a mixture thereof. The catalyst of the invention can allow the micro carbon monoxide to be removed from the hydrogen-rich gas at a relatively low temperature and has the advantages of low load, high activity, relatively low cost and wide application prospect.

A heavy metal ion recycling agent is characterized by comprising a compound represented as a structural formula shown in the specification, wherein R1 is selected from an alkyl group, a derivative of the alkyl group, an amino group, a derivative of the amino group, an aryl group and a derivative of the aryl group, and the number of hydrogen atoms in the components and the number of carbon atoms in the components are smaller than 6; n is an integer larger than or equal to 50; M adopts K, Na, Li or NH4. The heavy metal ion recycling agent in water can form a stable heavy metal ion chelate in a cross-linked network shape with divalent and/or trivalent heavy metal ions, and flocculent precipitate is formed to facilitate separation and recycling, that is, the heavy metal ions in the wastewater can be recycled. Besides, the wastewater containing the heavy metal ions can be discharged up to the standard, and heavy metal can be recycled from the separated heavy metal ion chelate after reduction treatment.

The invention discloses a mobile terminal and a shooting light compensation method thereof. The method comprises the steps as follows: when a front camera is used for shooting, ambient light is collected; to-be-compensated color light and compensation intensity of the color light are determined according to color light contained in the ambient light and the intensity of the color light; a set area of a display screen of the mobile terminal emits the to-be-compensated color light with compensation intensity, so that the display screen performs light compensation on a shot object. With the adoption of the method, the light compensation color and intensity of the display screen are determined according to the ambient light, the effect of the camera is reduced to the best, and the shooting quality is improved.

The invention discloses a method of cultivating a selenium-enriched garlic plant material. The selenium content of the selenium-enriched garlic plant material is 3mg/kg-1500mg/kg, and selenium existing in a form of Se-methylselenocysteine accounts for more than 80% of the content of total selenium. The method is characterized by including: adding a selenium source into garlic growth medium in growth of garlic, using the selenium source to adjust the selenium content of the growth medium to be 0.2-100mg/kg, and adding alkaline matter to adjust the overall or local environmental pH value of the growth medium to be 7-8. By the method, the selenium source is obtained from different selenium concentration gradients, a good selenium form result is obtained, and the shortages that persistence of plant material selenium in the prior art is poor, the selenium is easy to be reduced in the environment, the utilization rate of the selenium is limited and the like are overcome.

The invention discloses a reduction/pH double response adriamycin prodrug and a preparation method and application thereof. The specific preparation method comprises the steps of performing a chemical reaction by using a small molecule compound 3,3'-dithio diyne butyl dipropionate (B-ss-B) endcapped with alkynyl and a compound diazide ethyl diacetal polyethyleneglycol (N3-a-PEG-a-N3) endcapped with an azide group, so as to prepare a reduction/pH double response polymer poly(SS-alt-A)n endcapped with alkynyl; and then connecting adriamycin derivatives at two ends of a polymer chain, so as to obtain the reduction/pH double response adriamycin prodrug DOX-hyd-poly(SS-alt-A)n-hyd-DOX. The reduction/pH double response water-soluble adriamycin prodrug has good biocompatibility and characteristics of controlled-release drugs, so that the reduction/pH double response water-soluble adriamycin prodrug can be used as a stimulating sensitive antitumor prodrug.

The invention discloses a preparation method of a composite oxide carrier. A composite oxide gel adopted in the method of the invention is obtained by the steps of: first preparing an aluminum hydroxide sol and a water solution containing a group IVB metal complex, then mixing the sol and the water solution, adding dropping a hydrolysis promoter so as to obtain a mixed precipitate, which is then subjected to aging, washing, filtering and drying. The composite oxide gel obtained by the method can make most of group IVB metal oxides distributed on an alumina surface so as to weaken influence onan alumina pore structure, enhance the catalysis assisting effect of group IVB metal oxides, and improve the pore structure and surface performance of the composite oxide carrier. Therefore, the vulcanizing property of a catalyst with the carrier of the invention can be improved, and loaded active metals are easy for reduction.

The invention relates to a novel positive grid lead-calcium alloy for a lead-acid storage battery. The alloy is prepared from components in percentage by weight as follows: 0.05%-0.12% of calcium, 0.5%-1.5% of tin, 0.06%-0.11% of bismuth, 0.07%-0.15% of rare earth elements and the balance of lead, wherein the rare earth elements are one or more of ytterbium, gadolinium and lanthanum. The ingredients of the grid alloy are improved by adding tin, bismuth, the rare earth elements and other additives, and a novel deep-cycle and maintenance-free grid alloy material for the lead-acid storage batterywhich is corrosion-resistant, good in charging property and mechanical property and long in cycle life is obtained.

The invention relates to a method and system for recording help-seeking and rescue evidences. The method for recording the help-seeking and rescue evidences is characterized by comprising the following steps: generating a unique identifier UID for the help-seeking this time by a server; and respectively automatically collecting videos, audios or pictures of a rescue process by an intelligent terminal of a help seeker and an intelligent terminal of a rescuer. The invention further relates to a system for recording the help-seeking and rescue. The system for recording the help-seeking and rescue evidences is characterized by comprising an intelligent terminal and the server, wherein the server is used for receiving the help-seeking, receiving geographical location information of the help seeker, generating the unique identifier UID for the help-seeking, and distributing a help-seeking message for rescue; receiving a response of the rescuer to the help-seeking and receiving the geographical location information of the rescuer; and recording. The method and system for recording the help-seeking and rescue evidences provided by the invention solve the problem that in the prior art, the evidences of the whole help-seeking and rescue process cannot be recorded.

The invention relates to the technical field of power transmission and distribution construction, in particular to a power transmission and distribution construction safety education and training system based on the VR technology and a construction method thereof. The system includes a VR host, a display device, a sound device and an interaction device, the display device is used for displaying image data in the VR host, the sound device is used for playing sound data in the VR host, and the interaction device is used for interacting with the VR host. The construction method is used for building the power transmission and distribution construction safety education and training system based on the VR technology. The system can better train construction personnel.

The invention relates to the field of power equipment monitoring, in particular to a power grid monitoring information storage and interactive coding processing method and apparatus. For the problem of upper-level application system instability caused by quick information change and low speed and efficiency of monitoring data query in the field of existing power grid equipment monitoring, the invention provides the power grid monitoring information storage and interactive coding processing method and apparatus. The apparatus comprises a first receiving module, a first processing module, a monitoring information coding module, a comprehensive monitoring management module and a second processing module which are connected. By performing coding, query and contrast analysis and statistics on equipment type information input by a user or a system, the monitoring data query and monitoring efficiency is improved, and the stability of the upper-level application system is enhanced; informationof equipment attribution and the like can be easily restored under the condition of not performing a table association query; patrol is performed for retrieving associated data; and even if the datafalls into other systems, the data can be restored and traced, so that the retrieval efficiency is improved and the operation cost is reduced.

The invention discloses a preparation method of a polyhydroxy phenyl improved type methanation catalyst. The preparation method comprises the following steps: firstly, adding an ethanol dispersant into aluminum oxide or pseudo-boehmite, and performing ball milling on a ball mill to prepare activated aluminum oxide or pseudo-boehmite microsphere particles; secondly, preparing a nickel nitrate-polyhydroxy phenyl solution by using polyhydroxy phenyl and nickel nitrate, or preparing a nickel nitrate/M nitrate-polyhydroxy phenyl solution by using polyhydroxy phenyl, nickel nitrate and nitrate corresponding to an auxiliary agent M, and dipping to an activated aluminum oxide or pseudo-boehmite microsphere particles carrier; and finally, drying overnight at room temperature, and calcining at a nitrogen atmosphere or air atmosphere to prepare a NiO/Al2O3 catalyst or NiO-M/Al2O3 catalyst. By adopting the preparation method disclosed by the invention, the activity, selectivity and thermal stability of the catalyst are improved.

The invention discloses a preparation method of a SrTiO3/SrSO4/Pt double-heterojunction nano material. The preparation method comprises the following specific steps: preparing deionized water, glacialacetic acid and absolute ethyl alcohol as solvents and preparing strontium nitrate and tetrabutyl titanate respectively as a strontium source and a titanium source, wherein the added cysteine not only serves as a chelating agent, but also serves as a sulfur source; then preparing a precursor by adopting a sol-gel method, drying theprecursor in a drying box at low temperature for 48 hours, grinding the precursor, and annealing the precursor in a muffle furnace to obtain composite powder of strontium titanate and strontium sulfate; and finally, depositing a layer of platinum on the surface through a photodeposition method to form as a cocatalyst, and thereby the SrTiO3/SrSO4/Pt double-heterojunction nano material is obtained. The SrTiO3/SrSO4/Pt double-heterojunction nano material disclosedby the invention has a porous structure and a relatively large specific surface area, and can provide more active sites for a photocatalytic reaction; besides, the SrTiO3/SrSO4/Pt has very high activity on the precipitation of H2 under the illumination. The nano-material shows great development prospect in the field of photocatalysis.

The invention discloses a nano-silver composite textile catalyst and an application thereof. The nano catalyst is prepared by loading nano-silver to the surface of a textile material. Nano-silver particles are loaded on the surfaces of textile fibers by virtue of an in-situ growth method, and the particle size of the nano-silver particles is between 1-50nm; the nano-silver composite textile material shows a good catalytic effect, and can quickly reduce a nitro-compound and an ester compound under a room temperature condition, thereby effectively solving the problem of a severe condition for a reduction reaction of the ester compound at present; and the nano-silver composite textile catalyst is easy to prepare, can be used repeatedly, is low in price, and can be used for large-scale production. The nano-silver composite textile catalyst can quickly reduce an aromatic nitro-compound into aromatic amine at room temperature, and can reduce the ester compound into alcohol by taking an aqueous solvent as a reaction medium at room temperature. The nano-silver composite textile catalyst disclosed by the invention can also be recycled.

The invention discloses a method for preparing a nano-silver antibacterial cotton fabric by self-reduction. The method comprises the following steps: pretreating a cotton fabric in a NaOH solution under the condition of a water bath, then immersing the pretreated cotton fabric in a silver nitrate solution, carrying out immersing under the condition of a constant temperature, taking the immersed cotton fabric out of the silver nitrate solution, placing the immersed cotton fabric in clear water, carrying out washing, repeatedly carrying out stirring with a top-mounted stirrer under the conditionof a normal temperature, and carrying out natural air-drying. According to the invention, nano-silver is prepared by utilizing the absorption action of a hydroxyl group and the reduction action of analdehyde group in cellulose fibers, and addition of a reducing agent and an absorbent in a conventional process is not needed, so the preparation method for the nano-silver antibacterial cotton fabric provided by the invention is relatively more environmentally-friendly and greener and is a simple process.

The invention provides a method for the realization of the modularized customization and the assembly of room furniture and fitment system, comprising the steps that: a. the construction decorative materials are customized according to the room area and structure; b. the customized construction decorative materials are arranged in an appropriate position in the room; c. the construction decorative materials are dissembled and folded to be assembled into the required furniture and to realize the required fitment effect, wherein the construction decorative materials comprise a construction decorative demi-body module, and a demountable and foldable room furniture demi-body module jointed with the construction decorative demi-body module. The customized construction decorative materials can satisfy the requirements of different consumers with convenient transportation, and can complete the room decorative process through dissembling and assembling after arriving at the room. The invention is economy, highly efficient, environment-friendly, simplifies the room decorative process, increases the space and resource utilization ratio, and leads a new development direction of the room decoration industry.

The invention is suitable for the technical field of multichannel recording, and provides a holographic sound recording method and device and terminal equipment, and the method comprises the steps: obtaining the angle of a target sound source through a microphone array in a recording process of the microphone array; and recording and storing the angle and audio data of the target sound source. According to the invention, the problem that the sound information of a continuous or moving sound source cannot be accurately recorded in the process of changing the sound along with time is solved.

The invention discloses a synthetic gas conversion catalyst. According to the synthetic gas conversion catalyst, modified silica gel is taken as a carrier; cobalt is taken as an active component, and accounts for 5 to 35wt% of the synthetic gas conversion catalyst; and the modified silica gel is modified with a zinc-containing aqueous solution with a pH value of 3 to 4.5 via excessive immersion treatment. The invention also discloses a preparation method of the synthetic gas conversion catalyst. The preparation method comprises following steps: silica gel is taken as the carrier, and is subjected to surface modification, wherein excessive immersion treatment with the zinc-containing aqueous solution with a pH value of 3 to 4.5 is used for surface modification of the silica gel carrier; and loading of the active component Co is carried out via immersion method. The invention also discloses applications of the synthetic gas conversion catalyst in Fischer-Tropsch synthetic reaction. The preparation method is simple; and the synthetic gas conversion catalyst is high in activity and stability.