136results about How to "Relieve environmental pressure" patented technology

The invention relates to a purification process for preparing high-purity coenzyme Q10 from crude coenzyme Q10 extracts obtained from thallus fermentation, which belongs to the technical field of compound separation purification. The purification process is characterized by sequentially comprising the following steps of: carrying out adsorbent resin adsorption, elution, concentration, crystallization and recrystallization on the crude coenzyme Q10 extracts; then, carrying out chromatography on a silicagel column; and purifying and refining by using a petroleum ether -aether or normal hexane-ethyl acetate mixed solvents as eluant. The invention has the following advantages that by adopting an adsorbent resin, good adsorption performance can be exerted on the coenzyme Q10, the desorption operation is simple, the stability is good, and the adsorbent resin can be reused many times; and by combining the adsorbent resin with the silica gel chromatography method, the silica gel utilization rate is high, the required silica gel is low quantity and can maintain good purification effect after being reused more than 10 times, the waste quantity of the silica gel is small, and the solvents can be recycled so that the purpose of environment protection is achieved. The production operation is simple and convenient, and the purity of the obtained coenzyme Q10 is higher than or equal to 98 percent.

The invention discloses a high titanium-bearing heavy slag C50 self-compacting weakly expansive concrete-filled steel tube, and belongs to the field of building materials. The concrete-filled steel tube is prepared from the following raw materials: cement, coal ash, composite expanding agent, macadam, high titanium-bearing heavy slag, a tackifying plasticity-maintaining super-dispersing additive, micron-sized modified absorbent cotton cellulose and water. The prepared concrete-filled steel tube has the characteristics of high flow state, low gas content, large strength extra coefficient and stable expansibility; the problem of poor working performance caused by application of high titanium-bearing heavy slag to concrete is solved; due to the water absorption and water releasing effect of the porous structure, the internal maintenance effect on the concrete-filled steel tube can be realized, the shrinkage compensation effect of the expanding agent on the concrete-filled steel tube is improved, the concrete-filled steel tube is weakly expansive to be suitable for jacking pouring of upper chord pipes and lower chord pipes of a concrete-filled steel tube arched bridge and a concrete-filled steel tube truss bridge, as well as high-casting pouring of a concrete-filled steel tube pier column. Therefore, the problem of disengaging caused by poor-density pouring of the concrete-filled steel tube is solved effectively.

The invention relates to cationic organic particles for a microparticle retention and drainage aid system, preparation and application thereof. The preparation of the cationic organic particles comprises the following steps of: preparing nano-microcrystalline cellulose by an acid hydrolysis method or a bioenzyme hydrolysis method by taking wood pulp, microcrystalline cellulose or cotton as a raw material; reacting 1 to 12 percent of nano-microcrystalline cellulose suspension with cationic reagents such as 3-chloro-hydroxypropyltrimethylammonium chloride, 3-chloro-hydroxypropyltriethylammoniumchloride or 2,3-epoxypropyltrimethylammonium chloride and the like in 5 to 17 percent of sodium hydroxide with stirring at the temperature of between 50 and 120 DEG C for 2 to 6h, and then dialyzing to obtain cation-modified nano-microcrystalline cellulose suspension. 0.05 to 2.0 percent of the product is added and serves as a retention and drainage aid to make paper when the cationic organic particles are applied in the microparticle retention and drainage aid system. The cationic organic particles for the microparticle retention and drainage aid system have the characteristics of large specific surface area, high surface charge density, good retention and drainage aid effect and the like.

The invention relates to a method for separating, reclaiming and recycling CO2 in gas of a blast furnace and a converter respectively, belongs to the fields of ferrous metallurgy and greenhouse gas discharge reduction, and provides an energy-saving technique for improving the mass energy of the gas and reducing the discharge of CO2. The method integrates and optimizes the reclamation and recycle of the gas of the blast furnace and the converter; the reclamation and separation of the CO2 in the gas are executed by a gas treatment system, an absorption tower and a regeneration tower with a built-in boiler, and a chemical absorption system is additionally provided; and the reclaimed CO2 and partial external CO2 can be used for blasting in a hot-blast stove of the blast furnace and carrying gas for injection fuel, and the reclaimed CO2 also can be used for replacing N2 to carry out slag splashing protection for the converter. The method realizes the recycle of the CO2 during iron making in the blast furnace and steel making in the converter, also can use the external CO2 reclaimed from the industrial waste gas in the industries of power, chemical engineering and the like, reduces the discharge of the CO2, realizes an environment-friendly steel production process, and has remarkable social and environmental benefits.

The invention relates to a preparation method of activated carbon, and particularly relates to a method for preparing composite based activated carbon by utilizing straws and sludge. The method for preparing the straw-sludge composite based activated carbon includes the following steps: respectively carrying out 105 DEG C vacuum drying and crushing of undigested dewatered sludge and the reed straws; mixing the vacuum dried and crushed sludge and the vacuum dried and crushed straws in the step (1) according to the mass ratio of 1:1 to 4:1, activating with a 0.5 mol / L KOH, centrifuging, and drying; carbonizing the dried sample in a resistance furnace for 2 to 6 h under the N2 gas atmosphere and at the temperature of 600 to 800 DEG C, repeatedly washing the prepared crude sample with water for 3 to 4 times, carrying out low temperature drying to reach constant weight, and thus obtaining a sample S1; and dipping the sample S1 with hydrochloric acid and heating to boil for 30 to 60 s, cooling, repeatedly washing with water for 3 to 4 times, carrying out low temperature drying to reach constant weight, and thus obtaining the sample S2.

The invention relates to a method for synthesizing tobermorite whiskers with fly ash as a raw material and belongs to the technical field of nanometer whisker products. According to the method, an addition agent and a calcium resource are mixed uniformly according to the Ca / N molar ratio of (1-1000): 1 to obtain mixed slurry, after the pH value of the mixed slurry is adjusted to be 11-14, the fly ash is added, and in a high-pressure closed container, the mixture reacts at the temperature ranging from 150 DEG C to 260 DEG C, so that the tobermorite whiskers are obtained; the addition agent is a surfactant; the surfactant is an amino compound or a derivative of the amino compound. According to the method, the industrial solid waste fly ash is used as the raw material, the synthesized tobermorite whiskers can serve as a high-quality silicate heat-preserving and fireproofing material, and after being separated and purified, the tobermorite whiskers can also serve as an inorganic addition agent of a function composite material. The method is simple, feasible and beneficial for promoting high value-added utilization of the fly ash resource, and the product can be applied to the fields of building materials, metallurgy materials, chemical engineering materials and the like.

The invention relates to a method for preparing an anti-oxidation antibacterial membrane with a cinnamon essential oil Pickering emulsion and belongs to the field of food packaging materials. The method comprises the following steps: putting an oil phase formed by cinnamon essential oil and corn oil through ultrasonic mixing into an octenyl succinic acid starch sodium solution, and performing homogenization so as to obtain a Pickering emulsion; gelatinizing a 3-7% modified starch solution, and adding 10-50% of glycerinum and 10-50% of a reinforcing agent sodium alginate so as to form a membrane formation liquid for later use; and performing electronic stirring and mixing on the obtained Pickering emulsion and the membrane formation liquid, performing ultrasonic treatment by using an ultrasonic probe, performing curtain coating membrane formation on the obtained membrane liquid, and performing drying and membrane formation in a baking oven. The membrane prepared by using the method hasgood mechanical properties and good barrier properties. Due to slow release of the cinnamon essential oil, long-term antibacterial activity and anti-oxidation capacities can be achieved, a long-term stable antibacterial concentration is maintained in a package, and thus the purposes of food preservation and fresh keeping can be achieved. The membrane can be widely applied to packaging of fresh foods, and the shelf lives of foods can be safely and effectively prolonged.

The invention provides a method for reducing the emission of thermal power generation smoke CO2 and subsidiarily producing superfine nanometer CaCO3 from the thermal power generation smoke CO2. A device for realizing the method comprises a decarburization tower, a settling tank, a water inlet pump I, a reaction tank, a first-level settling tank, a second-level settling tank, a third-level settling tank, an intermediate tank, a water inlet pump II and a ceramic membrane filter which are successively connected through a pipeline, wherein the settling tanks are all connected with a calcium carbonate storing groove. The method provided by the invention has the advantages that smoke discharged from thermal power generation is purified and decarburized, the low carbon emission of the smoke of a power plant is realized, the environment stress of the power plant is relieved, and the green power generation is realized; the temperature of the smoke is reduced through the contact heat transfer of seawater and the smoke, waste heat is fully utilized, and the heat pollution caused by high temperature smoke emission is reduced; the CO2 in the smoke is converted into a CaCO3 product after being absorbed, the waste is turned to wealth, the smoke decarburization and the seawater decarburization are combined, the treating cost spent on the seawater decarburization is reduced, and an equipment scaling problem in the later sea water desalination process is prevented.

The invention relates to the technical field of seedling mediums, and relates to a tomato seedling medium prepared by using paper mud, mushroom residues and sand. The tomato seedling medium is composed by the following raw materials by volume: 20-30% of fermented paper mud, 20-30% of fermented mushroom residues and 40-60% of the sand. The compound medium provided by the invention can improve physical and chemical properties of the tomato seedling medium, reduces adverse effects of a single medium, cultivates the optimal tomato seedlings, promotes the growth of the tomato, can reduce production cost under the premise of guaranteeing the quality of the tomato seedling goods, realizes resource utilization of the paper mud, and has obvious social benefits, economic benefits and environmental and ecological benefits.

The invention provides a structure and a method for processing a black cotton soil embankment with impervious geotextiles. The embankment structure comprises a geogrid gravelly soil base course, impervious geotextile edging and interlayer seepage-proofing layers, a black cotton soil fill stratum and a non-expansive clay top seal layer. The method comprises the following steps: (1) clearing a foundation; (2) setting out; (3) paving three layers of geogrid gravelly soil with the total thickness being 50cm; (4) spreading the impervious geotextiles on two sides of the road foundation, lapping the impervious geotextiles with filled soil by 250cm, turning up the impervious geotextiles on the slope of the road foundation, lapping the impervious geotextiles on the two sides in the middle of an embankment by 100cm after turning up, and bonding by using emulsified asphalt, wherein the lapping width of the adjacent impervious geotextiles is100cm and the impervious geotextiles are bonded by virtue of the emulsified asphalt; (5) spreading the soil and carrying out rolling construction; and (6) filling and rolling the top seal layer. The structure and the method disclosed by the invention are conducive to the stabilization of the embankment and are capable of preventing the embankment from deformation.

The invention relates to a high-performance water storage material and a preparation method thereof. The water storage material is prepared from, by weight, 46.75-80% of a clay raw material (by solid), 15.75-50% of a biomass raw material, 0.5-3% of a high temperature liquid phase promoter, 0-1% of a high temperature foaming agent and 0-0.25% of a plasticizer. The preparation method comprises the following steps: weighing the clay raw material containing silicate and aluminate, the biomass raw material, the high temperature liquid phase promoter, the high temperature foaming agent and the plasticizer according to the above mass proportions, fully and uniformly stirring the weighed raw materials, placing the obtained mixture in a granulator, molding circular or elliptical granules with the particle sizes being 2-5 cm, and drying and sintering the granules to obtain the water storage material. The high-performance water storage material obtained through optimizing and combining in variousfoaming modes has a good water storage performance, and has a water storage rate reaching 80-105%.

The invention discloses a production process of ecological dry-mixed mortar. Construction waste is sorted by a volumetric method to obtain waste sand, the waste sand is screened and broken to prepare reclaimed sand; and the reclaimed sand substitutes natural sand by a proportion of 30-50% to prepare ecological building of different strength grades, plastering and ground dry-mixed mortar. The invention uses construction waste for the preparation of reclaimed sand, which substitutes natural sand in large amount for the preparation of ecological dry-mixed mortar, alleviates the pressure on resources and the environment to some extent. The prepared ecological dry-mixed mortar product has similar performances as the dry-mixed mortar prepared from all natural sand preparation, and can be widely used.

The invention discloses a compound cow hoof bath lotion. The compound cow hoof bath lotion comprises the following components in parts by weight: 1-45 parts of a sterilizing agent, 1-40 parts of a hoof protection agent, 1-20 parts of a plant extract product, 1-20 parts of an astringent, 1-15 parts of a synergist, and 10-30 parts of deionized water. The protect can be used for preventing generationof cow hoof disease, disease condition can be controlled while disease happens, the compound cow hoof bath lotion does not contain formaldehyde, excitant and carcinogenicity on people and livestock can be avoided, and environment pressure due to hoof bath by single usage of copper sulphate can be alleviated through direct discharge. The invention also discloses a preparation method of the compound cow hoof bath lotion, which has the advantages of simple operation and easy acquisition of raw material, and is suitable for large-scale production.

The invention provides a formaldehyde removal decorative plate and a preparation method thereof, and relates to the field of formaldehyde treatment. An adsorption layer is further included between a Base material and a decoration layer, a functional coating layer is arranged on the surface of the decoration layer; the adsorption layer comprises the following components: diatomaceous earth, activated carbon, biomass charcoal and pelelith particles; the functional coating layer comprises the following components: an activated carbon loaded nano TiO2 material, chitosan, rosin resin, nano graphene, lignin, a plant extract, light calcium, a Biological enzyme, a silicone acrylic emulsion, a coalescing agent, a defoaming agent, a dispersing agent and water; the formaldehyde is removed in a mannerof combining the physical adsorption, the chemical catalysis, the biological enzyme and the plant extract, and the removal effect is improved. The base material and the adsorption layer, and the adsorption layer and the decoration layer are respectively bonded with a soybean protein adhesive. Through use of the formaldehyde removal decorative plate, the adsorption layer and the functional coatinglayer are combined to remove formaldehyde, the removing effect is improved, and the formaldehyde-removing decorative plate is safe, non-toxic and harmless.

The invention discloses C60 self-compacting shrinkage-compensating anti-crack concrete suitable for a steel anchor beam cable tower anchoring structure. The concrete is prepared from raw materials, namely, cement, fly ash, mineral powder, an expanding agent, gravel, high-titanium heavy slag sand, polyacrylonitrile fibers, micron-sized modified absorbent cotton cellulose, a cement paste microstructure regulating agent, water and an ultra-dispersing, water-reducing, shrinkage-reducing and plasticity-maintaining additive. According to the concrete, the initial slump is higher than or equal to 230 mm, the expansion degree is higher than or equal to 630 mm, the 28 d compressive strength is higher than or equal to 70 MPa, the 28 d splitting tensile strength is higher than or equal to 5.8 MPa, the toughness index I5 is larger than or equal to 3.0, the 28 d autogenous-shrinkage ratio is smaller than 0, the 28 d dry shrinkage ratio is smaller than 0, the carbonization level reaches T-IV, the cracking resistance level reaches L-V, and the concrete has excellent mechanical properties, crack resistance and durability, can solve general problems that bridge tower concrete at the present stage is high in cement and cementing material consumption and large in shrinkage and cracks easily, and is suitable for popularization and application.

The invention discloses a blueberry seedling tending substrate comprising raw materials in parts by volume as follows: 400-500 parts of a sawdust and cow dung mixed fermented substance, 150-200 parts of turf, 70-100 parts of perlite, 30-50 parts of vermiculite, 200-300 parts of brown soil, 0.1-0.2 parts of dazomet, 0.1-0.2 parts of sulfur powder, 0.1-0.3 parts of trichoderma and 1.5-2.5 parts of controlled-release fertilizer. The invention further discloses a preparation method of the blueberry seedling tending substrate. The method comprises steps as follows: (1) mixing the sawdust and cow dung mixed fermented substance, the turf, the perlite, the vermiculite and the brown soil in proportion; (2) adding the dazomet to the substrate, evenly mixing the mixture, performing closed fumigation, performing ventilation for loosening the substrate after sterilization, and performing sufficient ventilation; (3) adding the sulfur powder and adjusting the pH value of the substrate to range from 4.5 to 4.8; (4) adding the trichoderma and the controlled-release fertilizer and evenly mixing the substrate before the substrate is placed in a bowl. The physical and chemical properties of the screened compound substrate meet the blueberry growth requirement, plants are strong and have few pest and disease damage, and the whole character is excellent.

The invention discloses a flame-retardant bio-based polyurethane hose. An inner rubber layer and an outer rubber layer are bio-based polyurethane thermoplastic elastic bodies, and a strip billet reinforcement layer is formed by weaving polyimide fibers. Meanwhile, a production method of the hose is disclosed. According to the bio-based polyurethane thermoplastic elastic bodies, soybean oil is adopted as initial raw materials, the thermal bodying (Diels Alder cyclization reaction) and ozonation / reduction technology relatively simple in process is applied in a cooperation manner, bio-based polyol containing high-reactivity primary hydroxyl is prepared, the polyurethane thermoplastic elastic bodies are prepared on the basis, and therefore existing petroleum-based polyol can be replaced; a flame retardant is added, mechanical performance degradation of the bio-based polyurethane thermoplastic elastic bodies is avoided, and meanwhile the flame-retardant performance of the bio-based polyurethane thermoplastic elastic bodies is improved; and the strip billet reinforcement layer is formed by weaving the self-flame-retardant polyimide fibers, and the hose has the excellent flame retardant performance.

The invention discloses a biodegradable material and a preparation method thereof. The biodegradable material comprises the following raw materials in parts by weight: 10-79 parts of bio-based resin,5-45 parts of a bio-based filler, 3-20 parts of modified nano calcium carbonate, 5-15 parts of talcum powder, 5-15 parts of glass fiber powder, 6-18 parts of zinc oxide powder, 5-20 parts of a plasticizer, 1-5 parts of a lubricant, 0.5-5 parts of a biodegradation accelerator, 10-50 parts of an antistatic agent and 3-15 parts of epoxidized vegetable oil. The biodegradable material disclosed by theinvention is safe, environment-friendly and non-toxic, has complete biodegradability, relieves environmental pressure caused by large-scale use of fossil plastic, has excellent mechanical properties compared with an existing biodegradable material, and has the advantages that the temperature resistance, the wear resistance, the hydrophobicity, the creep resistance, the rigidity, the tensile property and the impact resistance are remarkably improved, and production cost is significantly reduced.

The invention discloses a preparation method of inorganic fire retardant paper. The method comprises the following steps that 1, a silicate glass precursor spinning colloidal sol is synthetized through the sol-gel technology; 2, the silicate glass precursor spinning colloidal sol synthetized in the first step serves as a spinning solution, and a silicate glass nano-fiber non-woven film is prepared through the electrospinning technology; 3, the silicate glass nano-fiber non-woven film obtained in the second step is soaked in an inorganic filler solution, taken out, drained off and dried in air at the room temperature, and then the silicate glass nano-fiber non-woven film is rolled and compacted through a roller mill and transferred into a drying oven to be baked to obtain the inorganic fire retardant paper. According to the preparation method, raw materials are common and cheap, the manufacturing process is simple, efficient, safe, environmentally friendly and capable of saving energy and easily achieving large-scale production, and the obtained inorganic fire retardant paper has the better mechanical performance and the better chemical stability compared with common paper materials.

The invention discloses a comprehensive processing alkaline residue of diesel oil by circulation technology, which solves conventional process's shortcomings of low raw material utilization, high cost, and provides a highly efficient energy saving process. The process includes steps of: water-bathing with temperature controlled in 50-100 DEG C, demulsifying with highly effective polymerized demulsifying agent for alkaline residue, mirabilite, vitriol assisted by thermal method, demulsifying agent and mirabilite has a weight of 0.003%-0.03% and 10%-80% of alkaline residue respectively, standing for 5-6 hours for stratification to separate alkali waste water and diesel oil, adding vitriol to alkali waste water for acidizing, controlling temperature between 50 DEG C and 80 DEG C, and pH value between 4-6, standing for 1 and 8 hours to recycle phenol, acidizing to reach pH value of 2-4, standing for 1-8 hours to recycle naphthenic acid, obtaining mirabilite from waste alkali water after condensing and cooling to 10-30 DEG C for crystallization, which is recycling used, adding 1-5ppm polyacrylamide into waste alkali water after crystallization, and adding NaOH to prepare alkaline wash liquor to be cycled in alkaline wash process of diesel.

The invention relates to a lightweight gypsum board for absorbing electromagnetic radiation and a preparation method thereof. The lightweight gypsum board comprises the following raw material components in parts by mass: 30-50 parts of building phosphogypsum, 15-30 parts of a steel slag micro powder, 10-40 parts of copper slag, 2-8 parts of carbon fibers, 0.1-0.3 part of a retarder, 0.1-0.3 part of a water reducing agent and 0-0.1 part of an air entraining agent. According to the lightweight gypsum board disclosed by the invention, the absorption of electromagnetic waves is realized by utilizing ferroelectric and other substances in the copper slag. In addition, the dielectric constant of the material is changed by utilizing the carbon fibers, and the electromagnetic wave absorption ability of the gypsum board is further improved. After the electromagnetic wave passes through the gypsum board, the intensity of the electromagnetic wave is obviously decreased, and the breaking strength and impact strength of the electromagnetic wav are increased. The prepared lightweight gypsum board has a high waste utilization rate and excellent electromagnetic wave absorption property at 1.5-5.4GHz, and various properties meet the GBT23451-2009 General Technical Requirements of Light Weight Panel used for Building Partition.

The invention relates to a method for preparing light brick by using metallurgical waste slag. The method comprises the following steps that 1, discarded metallurgical slag, pulverized fuel ash and quick lime are dried and are respectively grinded finely; 2, water is added to prepare slurry; 3, the slurry is put in a mold and is pressurized and formed to obtain a green brick, and the green brick is dried; 4, the dried green brick is roasted, and the roasted green brick is cooled to room temperature, and the light brick is obtained. The light brick produced by utilizing discarded metallurgical slag, the pulverized fuel ash and the quick lime and adopting the light brick producing technological process of a process including fine grinding, material preparation, slurrying, forming, drying and roasting has the advantages of being light, low in density and good in heat insulation and preservation and sound insulation. Due to the fact that the discarded metallurgical slag is adopted as the raw material, the method has the advantages of being environmentally friendly and saving energy.

The invention discloses a composition containing corn kernel extract and application of the composition containing the corn kernel extract, belongs to the technical field of cosmetics and aims to provide a composition which is capable of effectively reducing pollutant attachment, improving a natural barrier function and anti-irritation ability of the skin, removing free radicals and enhancing an antioxidant defense system while supplementing moisture and energy to the skin and effectively resisting skin allergy, aging and other problems caused by pollutants outside. The composition is mainly prepared from, by weight, 8-30 parts of corn kernel extract, 5-25 parts of moringa pterygosperma seed extract, 5-15 parts of bonamite extract, 5-10 parts of Chondrus crispus extract and 5-15 parts of Boldo leaf extract. The invention further relates to the application of the composition as an additive of anti-pollution skin care products.

The invention belongs to the field of battery anode material recovery and particularly discloses a recovery method for an anode material of a nickel cobalt manganese waste battery. The nickel cobalt manganese waste battery is fully discharged and disassembled to obtain an anode piece; the anode piece is soaked in organic solvent, is dried and is then subjected to heat treatment in an oxygen-containing atmosphere at the temperature of 400-500 DEG C; and the anode piece obtained after heat treatment is subjected to wet ball grinding in a stripping agent, and then separation is conducted to obtain the anode material. The recovery method has the advantages that steps are simple, energy consumption is small, conditions are mild, other steps except for heat treatment can be all conducted under the normal temperature; solvent used in the whole process can be recycled, energy is saved, pollution is avoided, and cost is lowered; impurities in the recovered anode material are few, the structureof the anode material is not damaged in the recovery process, loss of the lithium element is small, aluminum is recovered in an elementary substance form, and subsequent treatment is not needed; and the recovery method is simple and efficient. The nickel cobalt manganese waste power battery is recovered through the recovery method, environment stress can be relieved, and cyclic utilization of resources can also be achieved.

The invention relates to anti-allergy composition as well as a preparation method and an application thereof, in particular to industrial utilization of ginger and constructed anti-allergy composition. The composition is prepared from, in percentage by mass, 0.01%-3% of fresh ginger essential oil and 0.01%-8% of bisabolol. The fresh ginger essential oil with anti-inflammatory and antibacterial effects is prepared from fresh ginger, besides, the anti-allergy composition is provided, the fresh ginger essential oil and bisabolol have a synergistic effect through adjustment of the proportion of the fresh ginger essential oil and bisabolol, and the composition has a remarkable anti-allergy effect, becomes a multifunctional anti-inflammatory and anti-irritation agent and has wide application prospects in the anti-allergy and anti-inflammatory field of cosmetics. Moreover, all parts of ginger can be utilized, and ginger polysaccharide, ginger essential oil and ginger essential oil resin are separated and extracted to be used in the daily chemical industry.

The invention relates to a method for manufacturing a perforated brick by using red mud. The method comprises the following steps that 1, pulverized fuel ash, quick lime and the red mud are dried and then are finely grinded respectively; 2, a pore forming agent is added and water is added to prepare slurry; 3, the slurry is put in a mold and is pressurized and formed to obtain a green brick, and the green brick is dried; 4, the dried green brick is roasted, and the roasted green brick is cooled to room temperature, and the perforated brick is obtained. The red mud, the pulverized fuel ash and the quick lime are prepared by adopting a fine mill, the pore forming agent is added for uniform slurry preparation, the slurry is pressurized and formed, and the perforated brick produced through the technological process of a block drying and roasting process has the advantages of being light, low in density and good in heat insulation and preservation and sound insulation. Due to the fact that the red mud is adopted as the raw material, the method has the advantages of being environmentally friendly and saving energy. The added pore forming agent makes the density of the perforated brick smaller than 350 kg / m-3, and the requirements for low density and light weight are achieved really.

The invention relates to the field of municipal engineering, in particular to a rainwater channel with a rain and dirt flow dividing function and a construction method thereof. The rainwater channel with the rain and dirt flow dividing function comprises a rainwater channel body, a flow dividing plate and a cover plate; the rainwater channel body is a trapezoid channel with the narrow bottom and the wide top, half spaces are arranged on the two sides of the inner wall of the rainwater channel body, the flow dividing plate is arranged on the half spaces, and the flow dividing plate is a hollowsheet; the hollow sheet is filled with filter balls; the cover plate is arranged on the top of the rainwater channel body, and a plurality of water inlets are formed in the cover plate; the rainwaterchannel body and the flow dividing sheet are prefabricated, the component quality is ensured, complex formwork erecting, maintaining and disassembling procedures on a construction site are omitted, construction pollution is lowered, and the rainwater channel has the advantages of being good in quality, saving time and being efficient, portable, environmentally friendly and the like.

The invention discloses a tomato artificial seedling culture substrate and a preparation method thereof, and belongs to the technical field of a seedling culture substrate. The tomato artificial seedling culture substrate is prepared from 49 percent of material slag, 49 to 50 percent of water and 1 to 2 percent of biofermentation microbial inoculums in percentage by weight, wherein the material slag is prepared from 20 to 30 percent of mulberry branch powder, 20 to 30 percent of bagasse, 32 to 50 percent of fine sand, 2 to 4 percent of chicken manure and 2 to 4 percent of urea in percentage by weight. The invention also discloses a preparation method of the tomato artificial seedling culture substrate. The tomato artificial seedling culture substrate provided by the invention has the advantages that the decomposing period is short; the seedling culture survival rate can be improved; the use is convenient; the preparation method is simple; the cost is low; the market prospects are wide; the tomato artificial seedling culture substrate is suitable for scaled production.

Lipogenic yeasts bioengineered to overexpress genes for lipid production, and methods of use thereof. The yeasts are modified to express, constitutively express, or overexpress an acetyl-CoA carboxylase, an alpha-amylase, an ATP citrate lyase, a diacylglycerol acyltransferase, a fatty acid synthase, a glycerol kinase, a 6-phosphogluconate dehydrogenase, a glycerol-3-phosphate dehydrogenase, a malic enzyme, a fatty acyl-CoA reductase, a delta-9 acyl-CoA desaturase, a glycerol-3-phosphate acyltransferase, a lysophosphatidate acyltransferase, a glucose-6-phosphate dehydrogenase, a beta-glucosidase, a hexose transporter, a glycerol transporter, a glycoside hydrolase enzyme, an auxiliary activity family 9 enzyme, or combinations thereof. The yeasts in some cases are also modified to reduce or ablate activity of certain proteins. The methods include cultivating the yeast to convert low value soluble organic stillage byproducts into lipids suitable for biodiesel production and other higher value uses.

The invention belongs to the field of material synthesis and metal anticorrosive coating preparation, and particularly relates to a preparation method of phytic acid and KH550 modified biomass derivedporous carbon nanosheets, and application of the phytic acid and KH550 modified biomass derived porous carbon nanosheets to the aspect of intelligent anticorrosive coatings with in-situ surface treatment and self-repairing performance. Sheet composite carbon materials with surface treatment and chelating performance are prepared through a loading-grafting technology, the sheet composite carbon materials are added into water-borne epoxy resin to prepare the anticorrosive coatings with 'in-situ' surface treatment and self-repairing performance, the coating operation process is simplified, the service performance of the coatings is improved, waste biomass serves as a raw material and is turned into wealth, and recycling of resources is achieved.