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1505 results about "Water holding" patented technology

High activity biological water-retention saline alkali soil modifier and preparation method thereof

The invention provides a high activity biological water retention alkali oil modifying agent, which is prepared through fully and evenly mixing vegetable stem powder, humic acid, water-loss reducer, carbamide, gypsum, high activity biological agent, sodium ion adsorbent and acid according to certain proportion, adding binding agent which is 0.3-1time of the whole weight of raw material, and granulating in pelleting machine. The high activity biological water retention alkaline earth modifying agent which is prepared by the invention can effectively improve soil aggregate structure, increases the water holding property of soil, can effectively dissociate and absorb metal ion, reduces the components of soil soluble salt, increases soil organic matter and nutrition, and has extremely significant soil modifying effect.
Owner:师进

Plant cultivation mat and method for laying the same

This invention is to provide a plant cultivation mat which can be applied to those existing buildings, and which does not require large amount of time, labor and cost for its laying and removing works, and a method for laying such plant cultivation mat, as well. According to the invention, there is provided a plant cultivation mat, comprising one or a plurality of cells with water-passage ports being perforated in the vicinity of the bottom part thereof, said one or a plurality of cells constituting a mat frame disposed in a depressed form to permit the top part thereof to open, and an inwardly recessed part being formed at the lower required part of the side wall of said cell. When this plant cultivation mat is to be laid, arrangement is made as to forming a space having a required route at the inwardly recessed part of the cell so as to form a space having a required routein the inwardly recessed part of the cell. Before the plant cultivation mat is to be laid on the mat laying surface, a water holding layer is provided beforehand. It is further preferable that, at the time of filling the laying surface with this plant cultivation mat, the space having a required route is formed, and simultaneously water supply pipe is disposed in an arbitrary route in said space.
Owner:KYODO KY TEC CORPORATION

Washing machine with circulating water treatment function and control method thereof

A washing machine with a circulated water treatment function and a control method therefor. The washing machine comprises a water holding barrel (2), a washing structure arranged inside the water holding barrel (2) and a circulated water treatment device arranged under the water holding barrel (2), wherein the circulated water treatment device comprises a flocculation treatment unit and a filtering unit, the flocculation treatment unit comprises a flocculation container (10) connected to the water holding barrel (2) and a flocculation agent dosing device (11) for dosing a flocculation agent into the flocculation container (10), and water is discharged from the water holding barrel (2) to the flocculation container (10) for flocculation treatment; and the filtering unit comprises a filtering container (12) and a filter net (13) arranged inside the filtering container (12), the filtering container (12) is in communication with the flocculation container (10) and the water holding barrel (2), respectively, for filtering the water having been flocculation-treated in the flocculation container (10) and discharging same again into the water holding barrel (2) for reuse. The washing machine circularly treats water by flocculation and filtration till the end of washing, in which the water is discharged into the circulated water treatment device for purification in the flocculation treatment unit and the filtering unit and finally discharged outside. The washing machine has the advantages of saving water resources, reducing water pollution and protecting the environment.
Owner:QINGDAO HAIER WASHING MASCH CO LTD

Polymer electrolyte fuel cell

A polymer electrolyte fuel cell consists of plural units, and the unit has an anode side separator, an anode diffusion layer, an anode catalytic layer, polymer electrolyte membrane, a cathode catalytic layer, a cathode diffusion layer, and a cathode side separator. The cathode catalytic layer further includes a catalyst in which platinum or platinum alloy is supported on a carbon supporting body having an average lattice space d002 of [002] surface of 0.338 to 0.355 nm and specific surface area of the supporting body of 80 to 250 m2 / g, electrolyte containing ion exchange resin, and vapor grown carbon fiber. Furthermore, a water holding layer containing ion exchange resin, carbon particles, and vapor grown carbon fiber is arranged at an interface of the cathode diffusion layer and the cathode catalytic layer.
Owner:HONDA MOTOR CO LTD +1

Cooled pet garment

A pet garment capable of cooling by extracting vaporization heat in a wide range and extracting vaporization heat for a relatively long period of time without using a special chemical. The present invention is a wearable pet garment. It comprises back and a breast piece. The back and breast are continuously formed as a piece. Between the garment back and the garment breast, a neck hole is opened to pass a head and neck of pet, and adhesive parts are constructed on both sides of the garment back and on both sides of the garment breast. The garment back and the garment breast are composed of a water permeable sheet in an untouched surface on the pet. They are composed of the waterproof sheet in a touched surface on pet. A water holding layer, composed of a water-containing material, is disposed between the water permeable sheet and the waterproof sheet.
Owner:HARADA MAKOTO

Greening substrate of quarry waste muck as well as preparation method and application of greening substrate

InactiveCN102584456AReduce the amount of spoilLow costHorticultureFertilizer mixturesBacillus licheniformisSludge
The invention discloses a greening substrate of quarry waste muck as well as a preparation method and application of the greening substrate. The method comprises the following steps of: selecting the quarry waste muck, artificially sieving with a sieve of 2cm (to remove impurities such as weed), and artificially crushing corn straws to 1-2cm; sealing at a high temperature, and decomposing; proportioning in parts by mass: 40 to 60 parts of muck, 30 to 40 parts of sewage sludge, 10 to 20 parts of straws, 50 to 100g / m<2> of sheep dung, 2 to 6g / m<2> of water holding agent and 15 to 45g / m<2> of bacillus licheniformis fertilizer; and mixing uniformly at normal temperature to obtain the greening substrate. The vegetation substrate or a soil improvement material and a formula can be produced on site, waste soil quantity is reduced, the cost is reduced, and land and vegetation resources are protected; and the greening substrate can be applied to integral greening, local soil dressing greening and bagged greening in semi-humid regions of north China and construction project active regions with seasonal drought, centralized and large rainfall.
Owner:BEIJING FORESTRY UNIVERSITY

Indoor device of air conditioner

The invention relates to an indoor device of an air conditioner, comprising a main body which is composed of a panel, an outer shell and a bottom shell, a ventilator which is arranged in the main body, a heat exchanger which is arranged in the main body and is half-surrounded along the peripheral direction of the ventilator, the heater exchanger comprises a front side heat exchanger and a back side heat exchanger, the heater exchanger further comprises a front water holding channel with a groove, which is arranged below the front side heat exchanger, and a back water holding channel with a groove, which is arranged below the back side heat exchanger, the back water holding channel is obliquely arranged, the lower end of the back water holding channel is connected with the corresponding end of the front water holding channel by a first water drainage channel, water draining holes are arranged at the bottom part of two ends of the front water holding channel; the bottom shell, the frontwater holding channel, the back water holding channel and the first water drainage channel are integrated. The corresponding bottom shell and the related devices thereof are manufactured by a mould when the indoor device of the air conditioner is manufactured, the component account is reduced, and the assembling procedure is reduced, and the production efficiency is greatly increased.
Owner:GREE ELECTRIC APPLIANCES INC

Post stressed concrete beam pipe mudjacking agent

The invention provides a post stressed concrete beam pipe mudjacking agent which is characterized by comprising the following components in percent by weight: 1-3 percent of efficient slushing component, 5-10 percent of early-expanded component, 30-50 percent of middle-late expanded component and 40-60 percent of mineral admixture. The invention also provides a preparation method of the post stressed concrete beam pipe mudjacking agent, which comprises the step of uniformly stirring the components in a stirrer according to the weight percent to obtain the post stressed concrete beam pipe mudjacking agent. The post stressed concrete beam pipe mudjacking agent, cement and water are mixed according to a certain proportion to prepare a mudjacking material to be used for construction. The mudjacking agent has optimal flowing property, excellent water holding property, better compactness, full and uniform structure and good early plastic expanded performance, does not contain additives with corrosion on prestressed reinforcing steel, and has very low chloridion content, better adaptability with various cements and lower sensitivity on temperature and humidity.
Owner:BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD +1

Environmental-protection type gypsum-based putty powder for building

The present invention relates to an environment-protecting gypsum base building putty powder, which uses building gupsum as main setting hardening component, and utilizes the composite retarding agent to resolve the problems of that the building gupsum can be quickly set and hardened and single retarding agent can be resulted into large strength loss. Said invention adopts inorganic mineral powder and cellulose ether composition to reduce material cost and improve water-holding property of putty, and adopts water-soluble adhesive powder to raise cohesional strength of building putty, and said environment-protecting type gypsum base building putty powder is a single component solid powder, has no harmful substance, and has good construction property, and said putty surface is fine and smooth.
Owner:CHONGQING UNIV

Moisture-retention sustained and controlled release fertilizer and method of preparing the same

The invention discloses a water holding slow-controlled releasing fertilizer and a preparation method thereof, belonging to the technical field of agricultural fertilizers and preparation thereof. Macromolecule coating fertilizer is taken as an inner core and a water holding layer is taken as an outside layer to form a double-coating water holding slow-controlled releasing fertilizer; an inner coating is macromolecule protective layer coating material with nutrition controlling and releasing property; an outside coating is the water holding layer with excellent water holding property. Water retention agent suspension liquid is sprayed to the surface of macromolecule coating fertilizer grains for outside coating; wherein the water retention agent is prepared by taking cyclohexane, emulsifier, acrylic acid, acrylamide, sodium hydroxide, cross linker and evocating agent and adopting the method of opposite phase suspension polymerization. The fertilizer has the function of controlled releasing, drought resistance, water saving, water holding and soil improving and the advantages of high absorption percentage, wear resistance, difficult falling and the like; utilization ratio of liquid manure is improved and the fertilizer can be widely used to desert control, lawn plant, soil improvement, gardening, agriculture and forestry and the like.
Owner:CHINA AGRI UNIV

Water-holding and cultivating functional compound fertilizer and preparation method thereof

The invention relates to a water-holding and cultivating functional compound fertilizer, comprising a nitrogen fertilizer, a phosphate fertilizer a potash fertilizer, a trace element fertilizer, a compound amino acid, a soil conditioner, an organic matter and the like. In addition, the invention relates to a preparation method of the water-holding and cultivating functional compound fertilizer. The invention also relates to use of the water-holding and cultivating functional compound fertilizer for improvement of the growth characters and / or yield of crops.
Owner:中利丰肥业有限公司

Reclamation method for sunk paddy field caused by mining in mountainous regions

The invention relates to a reclamation method for a sunk paddy field caused by mining in mountainous regions and belongs to the technical field of improvement and utilization of environment, ecology and damaged fields. The method includes: performing topsoil stripping to fissured positions where fissures are created by mining sinking and lead to water leakage of the paddy field; covering water holding materials on fissured areas after topsoil stripping; compacting the covered water holding materials, pouring slurry and standing; performing topsoil backfilling and grinding to the fissured areas after slurry pouring and standing, and flattening to enable the fissured areas to be a whole with pieces of the paddy field around the fissured areas; and irrigating, nourishing and improving the paddy field after backfilling and grinding. By the method, the cultivation land where the fissures are created by mining sinking and lead to water leakage of the paddy field can restore the paddy field utilization mode and reach production level of a normal paddy field as soon as possible, a stable self-maintaining farmland ecological system can be formed, a paddy field protecting system can be formed, soil microbial content can be increased, physicochemical property of soil can be improved, and benign farmland ecological system circulation can be formed.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Washing machine with drying device

The invention discloses a washing machine with the drying device. The washing machine comprises a washing machine casing as the whole frame of the washing machine; a water holding drum which is elastically arranged inside the washing machine casing and at the rear end of which a hot air filling opening is arranged; a circular channel which is arranged at the front end of the water holding drum opening, on the front end surface of which a plurality of air suction holes are arranged, and on the outer side wall of which an air exhaust opening is arranged; a rolling drum which can be arranged inside the water holding drum in a rotary way, on the bottom end of which air holes are arranged, and on the side wall of which a limber hole is arranged; a hot air isolating device which is arranged between the rolling drum front end and the water hold drum front end, and used to isolate the air; a dehumidifying device which is arranged in the circular channel; a drying pipeline which is arranged outside the water hold drum; a condensation water pipe one end of which is connected with the circular channel and the other end of which is connected with the front part of the water draining valve. The drying device in the washing machine of the invention can cause the drying high temperature air flow to evenly enter into the space inside the rolling drum from the rear end and the side wall, to contact with the wet clothes inside the rolling drum, and the drying effect is greatly enhanced.
Owner:PANASONIC HOME APPLIANCES R&D CENT HANGZHOU +1

Water retaining fertilizer retaining multifunction polymer composite material and its preparation method

This invention relates to a multifunctional high polymer composite which has the ability of hydrating, water holding and delayed release of chemical fertilizer and its preparation. The feature of the invention is that it is formed formblely by a mixture of high polymer bibulous, delayed release high polymer nitrogenous fertilizer, inorganic phosphate fertilizer, potash fertilizer and polyurethane soft foam. The weight amount of raw materials is that high polymer bibulous 10-40, delayed release high polymer nitrogenous fertilizer 5-20, inorganic phosphate fertilizer 2.5-10, potash fertilizer and polyurethane soft foam 50-51.
Owner:WUHAN UNIV OF TECH

Low-temperature early-strength high-strength underwater grouting material

ActiveCN105622006AEnhance early compressive strengthImprove early strengthCalcium silicateWater reducer
The invention provides a low-temperature early-strength high-strength underwater grouting material. The low-temperature early-strength high-strength underwater grouting material consists of the following ingredients in parts by weight: 30-45 parts of ordinary Portland cement, 45-60 parts of fine aggregate, 5-10 parts of mineral powder, 2-4 parts of encryption silica fume, 0.5-1 part of a compound expanding agent, 0.2-0.5 part of an early-strength powdery water reducer, 0.1-0.5 part of nano hydrated calcium silicate, 0.3-0.5 part of a compound early-strength agent and 0.1-0.3 part of a dispersion-resistant compound. The low-temperature early-strength, low-temperature high-strength and dispersion resistant properties of the low-temperature early-strength high-strength underwater grouting material in water are improved at the same time in the four aspects of reducing the void ratio of the aggregate, optimizing the expanding components and improving the nano early strength and the dispersion resistance, the construction performance, such as the water holding performance and the viscosity, of the grouting material are remarkably improved, the 1d strength and the 28d strength of the grouting material under the undersea low-temperature condition are effectively improved, and the underwater dispersion resistance of the grouting material can be greatly improved. The low-temperature early-strength high-strength underwater grouting material has favorable low-temperature early-strength, low-temperature high-strength and underwater dispersion resistant functions.
Owner:JIANGSU SOBUTE NEW MATERIALS

Water-bearing capsule and preparation method thereof

The invention relates to a water-bearing capsule and a preparation method thereof. The water-bearing capsule consists of a water-based capsule core and a solid capsule shell wrapping the water-based capsule core, wherein the solid capsule shell consists of a hydrophobic membrane layer, a powder wrapping layer and a modified wax layer from outside in sequentially, and the strength of the solid capsule shell reaches 0.5-2.2kg. The water-bearing capsule can significantly reduce multiple harmful ingredients in smoke, reduces harms of a cigarette, and has the efficacy of improving a cigarette smoking moist feeling; the characteristic odor type can be endowed to the cigarette; in addition, the solid capsule shell of the water-bearing capsule is great in strength and difficult to break, so that stable water holding and quality guaranteeing effects of the cigarette are ensured; and the above benefits have very positive significance in improving the cigarette quality.
Owner:江西省华宝芯荟科技有限公司

Oral nutrition composition for beautifying skin

The invention relates to an oral nutrition composition for beautifying skin, which contains collagen, hyaluronicacid and vitamin C, wherein the collagen is active small molecule peptide with the molecular weight of 2000-6000Dalton, the hyaluronicacid is sodium salt, zinc salt and kali salt, and the vitamin C is natural or synthesized. The invention overcomes the defects that the collagen can not be absorbed by a human body or hydrolyzed into amino acid because the molecular weight is too big, and most of the collagen loses the beautifying efficacy and the like. Hydroxyproline in collagen peptide is promoted to generate by using the vitamin C through active prolyl hydroxylases, the collagen forms big molecule collagen required by beautifying the skin by crosslinked with the hydroxyproline, the hyaluronicacid is also a better nutrient absorption promoting agent except for special water-holding function and is matched with the vitamin C and the collagen for use, which can achieve more ideal effect of promoting the hyaluronicacid to be absorbed.
Owner:南京大渊美容保健有限公司

Flat glass substrate attenuation etching liquid

The invention relates to a reduction etching liquid for base plates of sheet glass, components percentage by weight of which comprise: hydrofluoric acid holding 5-25%, strong acid holding 5-30% and pure water holding 45-90%. The reduction etching liquid for base plates of sheet glass of the invention is less in volatilization and toxicity. The using rate of the etching liquid is high and etching speed is rapid and stable. Costs of waste liquor treatment and subsequent treatment are low. The etching effect is excellent. Therefore, the invention has wide prospects for application.
Owner:BOE TECH GRP CO LTD +2

Wet sludge anhydration burning processing system and process

The invention relates to a wet sludge drying and incineration processing system. The system comprises a low-temperature pyrolytic reaction device, a centrifuging filtering device, a steam condensation device, a filtrate recovery device and a sludge incineration device; the low-temperature pyrolytic reaction device is used for carrying out low-temperature pyrolytic reaction between wet sludge and saturated steam in order to convert macromolecular organics in the wet sludge into low-molecular organics and destroy a sludge water-holding structure; the centrifuging device is used for carrying out centrifuging filtering to the wet sludge after pyrogenation; the steam condensation device is used for condensing and collecting bled steam converted from saturated steam in the low-temperature pyrolytic reaction device; the filtrate recovery device is used for collecting filtrate produced in the centrifuging device and for collecting condensed fluid from the steam condensation device; the sludge incineration device is used for incinerating semidry sludge after being dehydrated in the centrifuging device and insoluble gas remained in the steam condensation device as fuel. The system also relates to a process for carrying out the processing of wet sludge drying and incineration by adopting the processing system. The system and the process can solve the problem of sludge resource regeneration in a mode of environmental protection, energy conservation, high resource utilization rate and low operating cost.
Owner:SHENZHEN ECO SOLUTION TECH CORP

Dry-mixed mortar with waste stone dust in stone mining and processing plant as aggregate and filler

The invention belongs to the technical field of civil engineering material, specifically relates to a dry-mixed mortar with waste stone dust in stone mining and processing plant as aggregate and filler. The dry-mixed mortar is composed of 0.08-5mm of waste stone dust, 0-0.08 mm of waste stone dust, cement, fly ash, metakaolin, calcium hydroxide and water holding thickening agent; with the dry-mixed mortar of the invention adopted, the waste stone dust accounting for 55-75% of the weight of the mortar product can be recycled, thus being environmentally friendly and ecologically friendly. The dry-mixed mortar of the invention not only makes good use of waste material but also features good environmental protection; in addition, the mortar features good water retention rate, fine Constructability, high index of strength and durability, low shrinkage factor and certain crack-resistant property. With all the advantages, the product of the invention can be widely applied to plastering, masonry and land disposal of civil engineering projects of all types.
Owner:湖北昂富新型材料有限公司

Formulation of anti-dazzle glass product etching liquid and etching technique

The invention relates to a formula of etching liquid of anti-dazzle glassware and an etching process. Raw materials of the formula proportion by weight comprise: ammonium fluoride holding 17-24 parts or ammonium hydrogen fluoride holding 8.5-12 parts, ammonium sulfate holding 2.5-3 parts, potassium sulfate holding 2.5-3 parts, calcium fluoride holding 2.5-3 parts, sulfuric acid holding 8-12.5 parts or hydrochloric acid holding 24-37.5 parts and water holding 60-75 parts. The process comprises: (1) weighing the raw materials according to the formula of the etching liquid, then mixing, uniformly stirring and ageing to formulate the etching liquid, (2) rinsing and drying pre-etched glass by organic solvent mixed by glycerol, (3) shielding one face of the rinsed glass needing not be etched and (4) immersing the glass in the formulated etching liquid for soak, then taking out the glassware and preparing anti-dazzle glass finished products after washing by clear-water and drying. The invention has the advantages of simple process, easy operation, labor saving, subtle granular surface of the prepared glassware, high penetration rate, good anti-glare effect, durable service and the like.
Owner:DONGHUA UNIV

Portable evaporation chamber

A self-contained evaporation system for use in disposing of excess water from oil and gas drilling operations is provided. The system includes a water holding tank in which the wastewater is preheated, an evaporation chamber mounted over the holding tank and having an open top, a nozzle system located within the chamber for producing a fine liquid mist, and fans disposed within the chamber for producing an air flow that carries the mist out the open top of the chamber. The system can be set up and taken down by one person in an hour or less, can be used with pond or tank operations, and is capable of operating in high winds and sub-zero temperatures. The system can be carried and mounted on a trailer for easy transport to and from various drilling sites.
Owner:EVAPORITE SYST

Preparation method of porous dressing of silk fibroin-calcium alginate biological wound

The invention relates to a preparation method of porous dressing of a silk fibroin-calcium alginate biological wound in the technical field of skin care products and medical apparatuses and instruments. The preparation method specifically comprises the steps: dissolving fibrous silk fibroin formed after a silkworm cocoon is degummed, filtering, dialyzing and concentrating so as to obtain silk fibroin water solutions with different weight concentrations; mixing deionized water and calcium alginate with a defined amount of silk fibroin solution, placing the obtained gelatinous solution in an environment with a normal temperature to obtain a gel film, freezing and drying the gel film to obtain the porous dressing of the fibroin-calcium alginate biological wound. The excellent biocompatibility is realized; the deionized water and the calcium alginate in the raw materials are both natural active materials, are used commonly used for the health-care food industry without stimulation on the skin, and are good in hygroscopicity and water-absorbing quality; the silk fibroin and the calcium alginate both have the high water holding rate property, thereby being relatively good in affinity property on the skin.
Owner:ZHEJIANG UNIV

Topical patch cooling preparation and methods for using the same

Topical patch preparations that contain an odorless physiological cooling agent, and methods for using the same are provided. The subject topical patch preparations are made up of an adhesive gel composition that is present on a support, where the adhesive gel composition includes the odorless physiological cooling agent, a water-soluble polymer gel, water and a water holding agent. In using the subject topical patch preparations, the topical patch preparations are applied to a skin surface of a subject and maintained at the site of application for a period of time sufficient for an effective amount of the an odorless physiological cooling agent to be administered to the subject. The subject invention finds use in a variety of applications.
Owner:TEIKOKU SEIYAKU KK TEIKOKU SEIYAKU CO LTD

Special-purpose slow release fertilizer for water-retention sprout-cultivation

The invention discloses a special fertilizer with medical fertilizer slowly released and water conserved for seedlings growth which is characterized in that the fertilizer mainly consists of the following ingredients according to weight propotion: 5-10 percent of super-absorbent resin, 8-20 percent of nitrogen (N), 5-12 percent of phosphorus pentoxide (P2O5), 3-7 percent of potassium oxide (K2O), 1-3 percent of zinc (Zn), 1-3 percent of ferrite (Fe), 1-5 percent of ingredients of boron, magnesium, molybdenum, manganese and copper, 0.2-2 percent of pesticide, 0.1-2 percent of fungicide, 0.001-0.01 percent of root growth promoting agent and 0.001-0.01 percent of dwarfing agent and the rest is adsorbent. The special fertilizer with medical fertilizer slowly released and water conserved for seedlings growth of the invention has functions of good water holding and supplying, slow releasing of medical fertilizer, seedlings and roots strengthening, elements applying and growth promotion, diseases prevention, insect disinfesting and production increasing, and is characterized by less dosage, low cost and convenient application, etc., and can be applied to rice seedlings dry raising, seedling raising on plastic trays and upland crops raising.
Owner:JIANGSU LIXIAHE REGION AGRI RES INST

Self-cleaning method and apparatus of full automatic washing machine

The invention discloses a self-cleaning method for a fully automatic washing machine, comprising five steps of detecting, judging, displaying, cleaning and discharging water. A device for implementing the method comprises a washing machine housing, a dehydrating barrel, a water holding barrel, an electric motor, a water inlet valve, a water discharging valve, a water discharging pipe and a computer control panel, wherein the computer panel comprises a computer memory chip, a push button switch and a display, the inner wall of the water holding barrel is provided with a photoelectric sensor, the inner wall and the bottom of the water holding barrel are provided with a plurality of water injection holes, each water injection hole is communicated with the water inlet valve through a flexible pipe, the computer control panel also comprises a buzzer, a detecting switch and a cleaning switch, and the photoelectric sensor and the water inlet valve are in electric connection with the computer control panel. The self-cleaning method of the fully automatic washing machine and the application of the device thoroughly remove the dirt and line cuttings inside the washing machine.
Owner:NINGBO LESLI IND

Solar distillation unit

A solar distilling apparatus employs anthracite coal as a heat-absorbing medium. Greenhouse roof elements rest over a gutter that is isolated from the water-holding container to prevent deposit formation and algae growth from reaching the gutter. Bacterial growth is inhibited by ventilation and the use of titanium-laden magnetite mixed with the anthracite particles. The gutter is also isolated from the exterior of the unit, which prevents contamination from outside sources. The exterior side of the roof elements resting on the gutter are fitted with a metal skirt that provides a heat sink preventing the re-evaporation of condensation flowing toward the gutter.
Owner:LUDWIG DAVID M

Process for synthesizing gel-based water-holding slow-release carbamide fertilizer and production method

The invention discloses a synthetic method for gel-based water-retained slow-release urea fertilizer, mainly comprising the following steps: 1) acrylic monomer is neutralized with 20% potassium hydroxide solution, obtaining a mixed monomer solution with twenty-five percent neutralization degree; 2) the mixed monomer solution is gauged and added into an aqueous urea, forming a polymerization mixed liquid; 3) a cross-bonding agent is added on the condition of heat-preservation stirring, and then a radical initiator is added after agitating the awaiting cross-bonding agent to dissolve; 4) a water gel is generated when the of polymerization is generated on the condition of heat-preservation stirring; 5) the gel-based water-retained slow-release urea fertilizer is crushed, dried, grinded, screened and packed. The synthetic method for gel-based water-retained slow-release urea fertilizer has the advantages of no-use of organic solvent, no solvent recovery problem, simple craft and lower cost.
Owner:SHENZHEN BATIAN ECOTYPIC ENG

Anti-disturbance concrete and preparation method thereof

The invention provides an anti-disturbance concrete and a preparation method thereof. The raw material of the anti-disturbance concrete comprises the following components in part by weight: 100 parts of cement, 10 to 100 parts of fly ash, 1 to 40 parts of other mineral admixture, 1 to 10 parts of anti-disturbance additive, 1 to 6 parts of polycarboxylic acid water reducer, 190 to 480 parts of fine aggregate, 200 to 480 parts of broken stone and 30 to 80 parts of water. In the invention, the drawbacks of common concrete, such as low early strength and long initial setting and final setting time interval, can be overcome by optimizing a mixing ratio and using the polycarboxylic acid water reducer with high water reduction rate, high water holding performance and early strength as well as the mineral admixture and the anti-disturbance additive in combination; and the early disturbance resistance, cracking resistance and durability of concrete are improved greatly.
Owner:TONGJI UNIV
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