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The present invention belongs to the field of porous ceramic material technology, and is the preparation process of one low cost and high performance porous silicon nitride/silicon carbide ceramic. The preparation process includes compounding material, forming and sintering as the conventional ceramic material preparing steps. It features that phenolic resin used as pore creating agent and carbon source is in-situ produced into SiC phase through the carbon hot reduction during sintering; and that Si3N4, Al2O3, Y2O3 and phenolic resin in certain proportion are produced into slurry through adding anhydrous alcohol and mixing for 12-24 hr and stoved into powder; and that the ceramic powder is processed through formation, cracking to eliminate glue, carbon hot reduction and sintering to produce the porous ceramic material with porosity of 40-70 %, strength of 70-160 MPa and low cost.

The invention relates to a lithium-enriched manganese-based material precursor which is a lithium-enriched manganese-based carbonate precursor of a lamellar morphology, the particle size of the precursor is 1-7mu m, and the specific surface area of the precursor is 8-50m<2>/g. By adopting the lithium-enriched manganese-based carbonate precursor of the lamellar morphology, a lithium-enriched manganese-based anode material of a high single crystallization degree can be easily prepared. The invention further relates to a preparation method of the lithium-enriched manganese-based carbonate precursor of the lamellar morphology, and a preparation method and the application of the lithium-enriched manganese-based anode material of a single crystal morphology. Therefore, the mechanical strength, the stability, the compaction density, the capacity and the first efficiency of the micro structure of the anode material can be improved, and the voltage attenuation of the material can be inhibited.

The invention relates to an Nb microalloyed Ni-Co-Fe-Cr-Al high-entropy alloy, and belongs to the technical field of metal materials. According to the Nb microalloyed Ni-Co-Fe-Cr-Al high-entropy alloy, through adjusting of proportioning of basic components of Al, Ni, Co, Cr and Fe and adding of microelement Nb, forming of an L12 phase is promoted, and occurrence of detrimental phases such as a B2phase, an Laves phase and a sigma phase is avoided; the high-entropy alloy is mainly composed of an FCC phase, the grain size is within 100 [mu]m-400 [mu]m, the yield strength is not lower than 300 MPa, the tensile strength is not lower than 740 MPa, the elongation rate is not lower than 18%, the good toughness and the high yield strength are both achieved, and the Nb microalloyed Ni-Co-Fe-Cr-Al high-entropy alloy meets the requirements of a modern industry for mechanical properties of materials.

The invention relates to a method for producing low-salt fish meat sausage by utilizing an ultrahigh pressure technology, belonging to the technical field of food science. In the invention, Seabass is taken as the main raw material, auxiliary materials such as edible salt, white granulated sugar, monosodium glutamate, white pepper powder, ginger powder and yellow wine are added, under the combined action of ultrahigh pressure (300-400MPa) and low and medium temperature (50 plus or minus 10 DEG C), novel fish meat sausage with good flavour and nutritive value is produced. The fish meat sausage produced by the invention is subjected to combined treatment under the conditions of ultrahigh pressure and low and medium temperature, the original flavour and nutritive value of the fish meat are remained, and the water-retaining property, the elasticity and the tenderness of the sausage are greatly improved; besides, the sausage has low salt content, thereby being beneficial to human health.

The invention discloses a foam copper-supported porous copper oxide nanowire composite material. The material comprises a foam copper substrate and a copper oxide nanowire supported on the surface, wherein the copper oxide nanowires are 8 to 12 mum in lengths, and are 150 to 250 nanometers in widths; the nanowires do not crack or fall easily; microscopically, the nanowires have porous structures, and pore diameters are 2 to 4 nanometers; macroscopically, the nanowires are distributed radially, and every 60 to 150 nanowires constitute a copper oxide micro-flower. The obtained composite material has a multi-grade and porous structure, and the whole three-dimensional structure is rich in apertures which are suitable for the permission of light rays and ion transport. When the composite material is taken as a photocatalytic degradation organic dye, the degradation efficiency can be increased by over 10 times; when the composite material is taken as a negative electrode material of a lithium ion battery, the capacity retention ratio can be increased by over 30 percent.

A method for treating magnesium-alloy work-piece surface, its work piece, its degrease surface treatment and non-electroplating nickel composition are disclosed. The process is carried out by forming displacing and activating layer containing nickel and metal M crystal seed on surface layer exposed with magnesium-alloy solid melt and heat treating. It has strong adhesion and long-period anti-corrosive function.

The invention relates to an improvement of apparatus in aluminium electrolytic industry, specially relate to a large-sized lining structure for prebaking aluminium electrolysis. The inventive lining structure has, on the bottom of electrolytic cell housing, from the bottom up, in order, asbestos plate layer, heat-insulating layer made of calcium silicate plate with heat-resisting, heat-insulating layer made of both layers light-weight bricks, impermeable layer made of one layer alumina, impermeable layer made of both layers firebricks, half-graphite-rod-cathode complex TiB2 coating, with the leteral of allotypic lateral mass. The advantages of the invention are that: (1) the structure has higher heat conductivity, lower electrical resistivity and low dilatability of electrolytic sodium, and current distribution in cathodic charcoal is more uniform; (2) impermeable layer is especially advantageous for prolonging the life of electrolytic cell; (3) allotypic lateral mass has higher thermal conductivity and lower electrical resistivity, in particular, prolonging the the life of electrolytic cell. The large-sized lining structure for prebaking aluminium electrolysis of more than 200kA is used in the invention.

A nanoball of temozolomide-sodium polylactate is proportionally prepared from temozolomide and sodium polylactate. Its product may be injection, freeze-dried powder injection, slow-release micropills, tablets, or membrane for treating cancer, especially the cerebral glioma. Its preparing process is also disclosed.

The invention discloses abrasive material-free polishing fluid free for chemical mechanical polishing of a rigid fragile material. The polishing fluid is characterized by consisting of 0.5 to 40 percent of corrosive, 0.5 to 20 percent of corrosion inhibitor, 0.5 to 15 percent of surfactant, 0.1 to 10 percent of pH regulator and de-ionized water. The abrasive material-free polishing fluid has the advantages of no abrasive material, small damage to the surface of a polished material, capability of obtaining a non-damage super smooth surface, no precipitate, capability of being stored and used for a long time, high stability, difficult volatilization, high fluidity, easy cleaning and small corrosion to equipment. The abrasive material-free polishing fluid is prepared special for the chemical mechanical polishing of the rigid fragile material, so the abrasive material-free polishing fluid has the advantages of conventional abrasive material-free polishing fluid, has high removal ratio for the rigid fragile material, can obtain high surface quality and has low cost and a simple and easy method.

The invention discloses a water coagulation treatment method. The method comprises that: a coagulating agent is adopted to carry out coagulation treatment on water; and in the process of water coagulation treatment, a catalyst and an oxidant are thrown into the water. Through the addition of the catalyst and the oxidant in the process of the water coagulation treatment, the catalyst forms a solid-liquid reaction interface in the water; and the oxidant undergoes rapid oxidation reaction on the interface and oxides organisms to destroy the protective function of the organisms on suspended particles. The adsorptive action of the catalyst can combine with colloid particles in the water to form a microfloc nucleus so as to increase the concentration of particles in the water and be favorable for the formation and growth of floc in the coagulation reaction.

The invention relates to the field of microcapsule preparation, and in particular relates to a polyurethane mixed microcapsule and a preparation method thereof. The polyurethane mixed microcapsule includes a polyurethane-coated isocyanate microcapsule, a polyurethane-coated hydroxyl compound microcapsule and an auxiliary agen; a wall layer of the polyurethane-coated isocyanate microcapsule is polyurethane, a core layer is isocyanate; a wall layer of the polyurethane-coated hydroxyl compound microcapsule is the polyurethane, a core layer is a hydroxyl compound; the auxiliary agent is a polyurethane catalyst. The prepared polyurethane mixed microcapsule has good spandex compatibility, heat resistance and impermeability.

The invention discloses a preparation method of an electrochemical biosensor used for detecting lysozyme. The preparation method includes the following steps that step1, a reporter probe DNA chain S1 is designed; step2, a gold electrode is pretreated; step3, the disulfide bond of S1 is opened in a buffering solution, and then lysozyme aptamers S2 are added so that S2 and S1 can form double-chain DNA; step4, the treated gold electrode is soaked in the double-chain DNA solution, and the double-chain DNA is arranged on the surface of the gold electrode in a modified mode. The invention further discloses the electrochemical biosensor prepared through the method and application of the sensor in the process of detecting lysozyme. The obtained electrode is soaked in hexaammineruthenium (III) chloride detection solution, then the obtained electrode, a calomel reference electrode and a platinum wire contrast electrode form a three-electrode system, and SWV detecting is performed. For the first time, a strategy of amplifying double electrochemical signals is combined with a label-free strategy to be applied to detecting the lysozyme, and therefore the lysozyme is detected in a high-sensitivity mode.

The invention relates to a method for preventing fertilizer agglomeration. A paste fertilizer agglomeration prevention agent is added into a dissolution groove to be dissolved; the dissolved paste fertilizer agglomeration prevention agent is sprayed onto the surface of the fertilizer after the atomization; after the uniform coating, insert powder is added. The treated fertilizer can be stored for 4 to 6 months without agglomeration.

A piston for the crosshead engine, in particular a piston is used for a large two-cycle diesel engine and is provided with a piston upper part (2) mounted to an upper flange (9) of a piston rod (1). The piston upper part is provided with the piston crown (3) connected to a piston skirt (4) annularly surrounding the periphery, and the piston crown covers the central cooling chamber (8). In this chamber (8), coolant can be injected via a supply line (10) arranged inside the piston rod (1), and can be carried away via a return line (11) provided outside in the radial direction of the line (10). Provided is a highly reliably cool a piston crown, in a piston provided with the piston crown having a rising center or with a cooling chamber formed to have an inserting body (17). The inserting body (17) has opposite inner nozzle (21) connecting to the supply pipelines (10) pointing to the piston crown (3) enclosed by an annular cell (22) which is formed into a coolant collecting chamber.

The invention provides a preparation method of a metal halide perovskite quantum dot CsSnX3. The method comprises the following steps of providing CsX, a first main solvent and a first cosolvent; after mixing, performing first heating stirring; preparing a Cs precursor; providing SnX2, a second main solvent and a second cosolvent; after mixing, performing second heating stirring; preparing an Sn precursor; heating the Sn precursor; after the temperature rises to 100 to 200 DEG C, adding the Cs precursor; performing stirring treatment; performing constant-temperature reaction for 10 to 20 min; preparing and obtaining the metal halide perovskite quantum dot CsSnX3, wherein in the CsX and the SnX2, the X is at least one of Cl, Br and I; the first cosolvent is diethyl allyl phosphate or N, N-dimethylformamide; the second cosolvent is diethyl allyl phosphate or N, N-dimethylformamide.

The invention discloses a metal oxide nano fiber for VOCs (Volatile Organic Compounds) catalytic oxidation. The average diameter of the metal oxide nano fiber is 100-800nm; the specific surface area is 10-200m<2>/g and the average crystalline grain in the metal oxide nano fiber crystal is less than 30nm and the metal oxide is at least one of vanadium oxide, chromium hemitrioxide, manganese oxide, cupric oxide and cerium oxide. The invention further discloses a preparation method and application of the metal oxide nano fiber; a one-dimensional metal oxide nano fiber prepared by means of electrostatic spinning is used as a catalyst; the specific surface area and relevant performances of the catalyst are improved and the dispersion, adsorption and desorption of reactant and product in VOCs catalytic oxidation are effectively enhanced.

This invention provides a chemical method for synthesizing soluble titanium dioxide nanocrystal at low temperature, characterizing in that: using titanium tetrachloride and titanium trichloride mixed hydrochloric acid solution as titanium source, with hydrogen dioxide and alkaline solution as adjuvant material, applying open system reflux reaction apparatus or closed system low-temperature heat reaction apparatus, leave the reaction for 1-12 h between 100 and 180Deg C. The yield of the titanium dioxide nanocrystal synthesized by this method is 30-70g/l. The obtained titanium dioxide nano particle has an anatase phase structure and a high degree of crystallization. The particle size is homogeneous and the particle diameter is distributed between 3 and 20nm, which is easily dispersed. The titanium dioxide nanocrystal has superior photocatalysis, deodorizing, antibacterial and mildew-resistant properties. This method is characterized of combining hydrolysis, crystallization and dispersion in one step, low reaction temperature, strong apparatus universality, easy-obtained and low cost raw material, and high yield.

The invention provides a high temperature resistant and low-modulus heat conducting organic silicon material which is prepared from the following raw materials: silicone oil, heat conducting powder filler, a low-modulus auxiliary, a high temperature resistant auxiliary, a crosslinking agent and a platinum catalyst, wherein the mass ratio of the silicone oil to the heat conducting powder filler is (90-110):(900-1,100); the mass ratio of the heat conducting powder filler to the low-modulus auxiliary is 100:(0.5-2); the mass ratio of the silicone oil, the high temperature resistant auxiliary, the crosslinking agent and the platinum catalyst is 100:(0.1-1):(5-15):(0.1-0.2) in turn. The invention belongs to the technical field of organic silicone. The heat conducting organic silicon material provided by the invention has the advantages of high long-term stability of heat dissipation in a high-temperature condition, low modulus, easy gap fitting, low thermal resistance and no oil leakage or volatilization; automatic adhesive dispensing construction can be realized; a better interface heat conducting material is provided between a heating component of an electronic appliance and a heat dissipation device or apparatus.

The invention discloses a mining engineering teaching model and belongs to the fields of mining engineering teaching and training. The mining engineering teaching model is characterized in that an original overall mining engineering model is reasonably detached and assembled according to the engineering characteristics of mining engineering and model assembly characteristics, engineering blocks are detached into basic engineering blocks and auxiliary blocks, each basic engineering block refers to different mining engineering, and the auxiliary blocks comprise connecting blocks, supporting blocks and ventilation facility blocks. The basic engineering blocks are connected into complex engineering through the connecting blocks, a three-dimensional space model is formed through the supporting blocks, and a whole mine ventilation system is formed through the ventilation facility blocks. The mining engineering teaching model is matched with mining engineering classroom teaching and model class teaching, the spatial form of mining engineering is conveniently combined with two-dimensional engineering graphics, and the teaching effect is improved; and meanwhile, students can deepen the understanding of the mining engineering space concept by using the mining engineering teaching model after class, and the graphics interpreting ability and space imagination ability of the two-dimensional engineering graphics are improved.

The invention discloses a heat-conducting wave-absorbing material. The wave-absorbing material comprises a component A and a component B in parts by mass, wherein the component A comprises 6-15 partsof silicon oil, 6-15 parts of heat-conducting filler, 70-85 parts of wave-absorbing agent, and 1-5 parts of coupling agent, and the component B comprises 10-25 parts of curing agent, 10-25 parts of catalyst, 1-3 parts of accelerant. The formation of the heat-conducting wave-absorbing material is facilitated, so that the wave absorbing performance of the finally formed wave absorbing material is better, and the performance of the wave-absorbing material formed by the method is 5-15% higher than that of a wave-absorbing material formed by a common method. The performance of the formed wave-absorbing material is more stable.

A UV curable adhesive composition includes a morpholine group-containing (meth)acrylic copolymer.

The invention provides a fluorine-doped nickel-cobalt-manganese precursor and a preparation method and application thereof. The method comprises the steps of preparing first mixed liquid containing anickel salt and a cobalt salt from soluble salts of nickel and cobalt; preparing second mixed liquid from a soluble salt solution of manganese and a soluble fluoride complexing agent under the condition of introducing a protective gas; carrying out forward feeding of the first mixed liquid, the second mixed liquid, a sodium hydroxide solution and an aqueous ammonia solution into a reactor with anultrasonic device, keeping the temperature at 50-60 DEG C and mixing at a speed of 500-800r/min until reaction is ended, carrying out aging and solid-liquid separation and then obtaining sediments; and washing and drying the obtained sediments to obtain a fluoride ion-doped nickel-cobalt-manganese precursor. The obtained precursor material has a sphere-like structure, the specific surface area is5.6-6.3m<2>/g, the tap density is 2.2-2.7g/cm<3> and the obtained positive electrode material is good in electrochemical performance.