890 results about "Water holding capacity" patented technology

A centralized irrigation system provides decision-making or non-decision-making controllers in combination with a client server architecture that employs range-based irrigation algorithms for monitoring and control. Range-based control strategies determine a total volumetric water holding capacity for a volume of soil and a range of desirable soil moisture in a root zone, and compare a calculated root zone soil moisture to that range in order to determine the volume of water to be applied during an irrigation event. The system permits a shared-savings business model where the vendor provides a system and the customer only pays the vendor a portion of the savings obtained by using the system.

A centralized irrigation system provides non-decision-making controllers in combination with a client server architecture that employs irrigation algorithms for monitoring and control. Live feedback means send information back to a server for use with sophisticated modeling capabilities to monitor exceptions to a planned control scheme, adjust control parameters, and provide a real-time update to system performance. This feedback is instantaneously routed from the server to monitoring and feedback client software connected to the server through a network and enables volume-based cycles and soaks of irrigation. Range-based control strategies determine a total volumetric water-holding capacity for a volume of soil and a range of desirable soil moisture. The system permits a shared-savings business model where the vendor provides a system and the customer only pays the vendor a portion of the savings obtained by using the system. It further permits rapidly deploying improved control systems to save water for a community.

The invention discloses a soil heavy metal composite passivator with humic acid minerals and a preparation method thereof. The soil heavy metal composite passivator is prepared by humic acid mineral powder, fused calcium magnesium phosphate and quick lime according to a certain proportion. The preparation method comprises the following steps: A, preparing the humic acid mineral powder: taking humic acid raw ore, carrying out ball-milling to the humic acid raw ore, and sieving the humic acid raw ore by a 110-140-mesh sieve for standby; and B, uniformly mixing the raw material prepared in the step A, fused calcium magnesium phosphate and quick lime, adjusting the water content of the mixture to be 10% counting by H2O, and stacking the mixture for five-seven days to obtain the soil heavy metal composite passivator with the humic acid minerals, so that the operation is simple and the method is easy to implement. By the invention, the available cadmium content of red sand mud soil with thefull-cadmium content of 10mg/kg (by exogenous adding) is reduced by 0.36-2.25mg/kg within ninety-day culture time, the reduction amplitude reaches up to 4.7-25.7%, the efficiency of the soil heavy metal composite passivator with the humic acid minerals under a water condition of 45% WHC (Water-holding Capacity) is better than that under a flooded condition, and the soil heavy metal composite passivator with the humic acid minerals also has the functions of passivating heavy metal in soil, soil fertility and the like and has significant popularization and application values in vast heavy metalpollution regions.

The invention discloses a composite biological soil conditioner and a preparation method of the composite biological soil conditioner. The composite biological soil conditioner comprises the following steps: 1) preparing charcoal; 2) modifying the charcoal; 3) fermenting livestock excrement; 4) preparing an ecological organic fertilizer; 5) compounding, wherein the soil conditioner comprises the following materials in parts by weight: 130-150 parts of modified charcoal, 250-280 parts of the ecological organic fertilizer, 30-35 parts of humic acid, 5-8 parts of probiotics, 3-5 parts of active peptide, 32-38 parts of a water retaining agent, and 190-220 parts of an auxiliary. The composite biological soil conditioner has the beneficial effects that the soil conditioner not only strengthens the water holding capacity of soil, but also improves the soil structure, reduces the bulk density of the soil, increases the porosity and the content of organic matters in the soil, regulates the pH value of the soil, improves the microbial flora of the soil, inhibits the growth and propagation of pathogenic bacteria of a root system, and complexes and adsorbs the heavy metal ions in the soil, and therefore, the composite biological soil conditioner is a safe and efficient composite biological soil conditioner.

An extruded, directly expanded, high fiber reduced calorie food product, such as a ready-to-eat (RTE) cereal or sweet or savory snack, is produced at high production rates without substantial loss of extrusion functionality and extrudability by replacing a substantial portion of at least one flour with a gelatinized, enzyme-resistant starch type III ingredient or bulking agent as a reduced-calorie, high fiber flour replacer. The resistant starch type III ingredient or bulking agent contains an enzyme-resistant starch type III having a melting point with an endothermic peak temperature of at least about 140° C., and may have a water-holding capacity of less than 3 grams water per gram of the starch-based bulking agent. The total dietary fiber retention of the gelatinized, starch-based bulking agent may be at least about 90% by weight after the extrusion using a die temperature of least about 100° C., and a die pressure of at least about 150 psig.

The invention discloses a method for calculating dynamic water storage capacity runoff yield in soil freeze-thaw process, and belongs to a hydrological science category in geophysical science categories. The method comprises the following steps of: calculating frozen soil depths at different times in grids of a watershed according to soil temperature distribution; analyzing day-by-day spatial distribution conditions of the frozen soil depths so as to obtain field capacities, distributed along with time, of aeration zones in different grids of the watershed; finding out the maximum field capacities in different grids of the watershed, and calculating the maximum water-holding capacity of the watershed; and calculating a soil freeze-thaw runoff yield of the watershed according to the obtained maximum field capacities in different grids and the maximum water holding capacity of the watershed. According to the method disclosed by the invention, the day-by-day soil freeze/thaw, frozen soil depths and soil temperatures can be simulated according to observed air temperatures, and the day-by-day process of thaw/rainfall runoff can be calculated according to rainfall observation, so that the runoff simulation precision in soil thaw periods in spring is improved, scientific basis is provided for the spring flood prevention decisions, and the gap of frozen soil area runoff yield calculation in the existing home and aboard hydrological models is filled.

The invention discloses a lactobacillus leavening agent, a preparation method thereof and a special bacterial strain. The preservation serial number of lactobacillus is CCTCC M208151. An active constituent of the lactobacillus leavening agent is the lactobacillus. The invention also discloses a method for preparing the lactobacillus leavening agent, which comprises the following steps: firstly, leavening and culturing lactobacillus plantarum SC79 CCTCC M208151 in SC79 optimal culture medium; and secondly, collecting thallus in the step 1 and then adding a protective agent to the thallus to obtain the leavening agent. The lactobacillus leavening agent has small dosage, quick acid production speed through mixing the lactobacillus leavening agent and a harvestless exopolysacchatide yoghourt bacterial strain to prepare yoghourt, better relative viscosity, elasticity, denseness and adhesiveness than that of the conventional yogurt and small syneresis sensibility of formed sticky yogurt colloids, larger water holding capacity than that the conventional yogurt and hard whey separation.

A method of cultivating crops and cover-crops, interactively and sustainably, using a novel hot water apparatus. The apparatus enables the farmer to prepare a soil bed for planting with a no-till method that: controls nematodes and soil pathogens, promotes nutrient cycling of cover crops and organic materials, kills weeds and weed seeds, and cultivates healthy soil micro flora. A low-pressure (5-60 psi) hot water (120-209 F) delivery system, characterized by a flexible mat which evenly distributes water to the underside of the mat where an attached layer of material with a high water holding capacity saturates and conducts scalding water onto the weeds. A hot water recirculation and heat exchange system reduces water demands while maintaining a high thermo charge in the mat. After soil cools, plants or seeds are planted directly through the mulch of dead weeds or cover crop. Inoculation of soil of microbes promote soil health and crop production.

The invention relates to a seaweed high-activity dietary fiber and a production method thereof; the dietary fiber adopts seaweed slag liquid produced in the production process of seaweed glue as raw material, filter residue and filter liquid in the seaweed slag liquid are respectively taken out, the filter liquid is activated by processing technique, so as to prepare soluble dietary fiber; meanwhile, the filter residue is processed to prepare the insoluble dietary fiber; and then the soluble dietary fiber and the insoluble dietary fiber are formulated to form the seaweed high-activity dietaryfiber. The invention adopts the residual seaweed slag liquid in the production of sodium alginate tech grade and carrageenan as raw material for producing the dietary fiber, thereby greatly reducing the production cost without decreasing the quality of the dietary fiber; in addition, the raw material is respectively prepared in the soluble dietary fiber and the insoluble dietary fiber correspondingly, and the soluble dietary fiber is activated to ensure the expansibility, water-holding capacity and the final yield of the dietary fiber, so as to lead the nutrition in the dietary fiber to be balanced and efficient.

There is herein described a peak-power reducing domestic hot water heater comprising: a closed tank having a predetermined water holding capacity, a hot water outlet in a top end wall of said tank, a cold water inlet in a side wall of said tank adjacent a bottom wall thereof, three spaced apart resistive heating elements projecting substantially horizontally in said tank, each of said resistive heating elements having a temperature sensing element to enable a control of their respective activation; a bottom one of said resistive heating elements extending in said tank spaced slightly above said bottom wall and having a lowest power rating, said bottom resistive heating element being turned on when water is flowing into said cold water inlet and drawn out of said hot water outlet during a peak-power demand time period; a middle one of said resistive heating elements extending in said tank at a level which is calculated to be equal or above an average maximum daily water consumption volume drawn out during the peak power demand time periods; and a top one of said resistive heating elements extending between said middle element and said top end wall of said tank and having a highest power rating; said middle and said bottom resistive heating elements being activated simultaneously only when said top resistive heating element is inactive.

The invention discloses a method for extracting a dietary fiber from potato residues, which comprises the following steps of: drying potato residues, pulverizing and screening to prepare potato residue powder; adding water into the potato residue powder, uniformly mixing to form a potato residue pulp, carrying out enzymolysis processing by using mixed enzyme, boiling and cooling; adding neutral proteinase to carry out enzymolysis processing, boiling and cooling, wherein the activity of the neutral proteinase is 1,600AU; filtering to form filter liquid and filter residues; and drying, pulverizing and screening the filter residues to obtain the dietary fiber. The invention improves the water-holding capacity and the oil-holding capacity of the potato dietary fiber by bio-enzyme processing and obtains a production process of the dietary fiber with optimal grain diameter simultaneously.

The invention discloses a water-saving and high-yield water and fertilizer management method for corn. The method comprises the first step of sowing and irrigating after seedling emergence, wherein the corn is sowed in the mode of alternating wide row spacing and narrow row spacing; the second step of irrigating and regulating of first irrigating after the seedling emergence; the third step of fertilization and irrigation regulation in a fertility interim, wherein from the small bell stage to the heading stage, the soil water content is kept to account for 70 percent-80 percent of the maximum water holding capacity of a field through drip irrigation; the fourth step of fertilization and irrigation regulation in the fertility middle and later periods, wherein from the flowering stage to the milk-ripe stage, the soil water content is kept to account for 80 percent-90 percent of the maximum water holding capacity of the field through the drip irrigation; the fifth step of water and fertilizer management before harvesting, and the sixth step of harvesting through a selected suitable harvesting machine, wherein corn stalks are smashed through a machine and returned to the field. According to the management method, the purposes of being high yield and quality, saving water and fertilizer and efficiently utilizing water and fertilizer resources in corn production are achieved under the condition of the drip irrigation and fertilizer application with the water.

The invention relates to a wolfberry soluble dietary fiber and a preparation method thereof. The soluble dietary fiber is separated from medlar residues; the medlar residues comprise residues produced by producing wolfberry juice, wolfberry fruit wine, wolfberry polysaccharide, wolfberry aqueous extracts, wolfberry alcohol extracts and the like. The preparation method comprises the following steps of treating the wolfberry residues by an acidic liquid, an alkaline liquid or enzymes, performing solid-liquid separation on a treating liquid, concentrating a clear liquid, depositing ethanol, and drying to obtain the wolfberry soluble dietary fiber. The technology is simple; the requirement for equipment is low; the color of a product is relatively good, and the product is relatively high in dissolvability, expanding capacity, water-holding capacity and oil-holding capacity; the wolfberry soluble dietary fiber is suitable for developing health food or being used as a food additive.

The invention discloses a construction method for a sponge city rainwater collection system. The system comprises the steps of a, excavation of foundation pit; b, base treatment; c, water purification pool building; d, water storage tank being in place; e, water seepage base course paving; f, watering and maintenance. According to the construction method for the sponge city rainwater collection system, the construction is easy, the difficulty is low, the construction quality is easy to control, the construction cost is low, the referred construction equipment is little, the permeation effect is good, the water-holding capacity is strong, collected rainwater is purified and put into secondary use, the resource utilization efficiency of the rainwater is greatly improved, waste is turned into wealth, and the problem of scanty water resources is relieved.

The invention relates to a bottom spray-seeding substrate containing fermented sludge and a preparation method thereof. The bottom spray-seeding substrate containing fermented sludge comprises: fermented sludge, an organic matter, loam, a soil water-holding agent and a binder. The bottom spray-seeding substrate containing fermented sludge provided by the invention can improve the soil structure, and also can improve soil fertility, the water holding capacity of soil and ion exchange capacity, thereby creating a soil environment suitable for plants. With good air permeability and water holding capacity, the bottom spray-seeding substrate containing fermented sludge is rich in organic matters, and provides good environment and nutrients for rapid growth of plants. At the same time, fermented sludge is employed to replace traditional peat to change sludge into things of value, thus improving resource development and utilization of sludge, reducing the cost of ecological rehabilitation projects, creating huge environmental and social benefits, also creating objective economic benefits for enterprises, and promoting the development of circular economy.

The invention discloses a method for breeding a new species of lean meat type pigs-Shennong No. 1, which includes: A) the erhualian sow as female parent and the yorkshire boar as male parent are in cross breeding to obtain the yorkshire*erhualian cross bred sow; then, cross breeding female parent is in cross breeding with the danish landrace boar to obtain danish*( yorkshire*erhualian) ternary hybrid pigs; B) a fundamental selective breeding group of danish*( yorkshire*erhualian) ternary hybrid pig is formed and selected as zero-generation of Shennong No. 1; C) the boars and sows are mated to obtain piglets, good piglets are selected gradually for seed reservation; D) the good piglets are continuously cultivated until sexual maturity, the outstanding individual female and male pig are reserved as the next generation of swine respectively according to reproductive performance and meat quality as well as carcass performance and growth performance; E) the step C) and D) are repeatedly operated for 4-15 times. The main selective breeding indexes of the Shennong No. 1 pig are based on the reproductive performance and meat quality, the Shennong No. 1 pigs have the advantages of good meat quality, which is manifested in red meat color, good water holding capacity, high intramuscular fat, and good tenderness and the like. Referring to the reproductive performance, the number of the first-born Shennong No. 1 sow is more than ten.

The invention provides an antibacterial polyelectrolyte composite nano-fiber membrane and a preparation method thereof. The antibacterial polyelectrolyte composite nano-fiber membrane with an antibacterial performance is prepared from chitosan cationic polymers by using an oxidized bacterial cellulose nano-fiber membrane as a base membrane and utilizing the electrostatic effect between anionic and cationic polyelectrolytes. The antibacterial polyelectrolyte composite nano-fiber membrane has excellent hydrophilia and charge performance, utilizes the electrostatic interaction between the anionic and cationic polyelectrolytes and is compounded with the chitosan cationic polymers by adopting a layer-layer adsorption method, and a multi-layer composite nano-fiber membrane is formed by selecting repeated adsorption and alternate deposition. The antibacterial polyelectrolyte composite nano-fiber membrane protects the unique nano-fiber structure of bacterial cellulose membranes, is controllable in antibacterial layer thickness nanometer grade, and is an ideal medical wound dressing with good antibacterial performance, excellent air permeability and strong water holding capacity.

The invention discloses a method for preparing dietary fiber by extracting potato residues, belongs to the field of food additives and solves the problems of difficult utilization and environmental pollution of fresh potato residues. Small potato blocks in the potato residues are grinded and crushed by using composite biological engineering technology, so that the potato fiber can be separated from other ingredients; protein and starch are removed by enzyme hydrolysis; pectin is dissolved out by acid hydrolysis; the potato pectin can be extracted by using liquid obtained by solid-liquid separation; and the potato dietary fiber can be extracted from the solid matters. In the method of the invention, the potato dietary fiber is extracted from the potato residues, so that the potato residues can be utilized and the environmental pollution can be reduced. The dietary fiber prepared by using the method has the functions of high water holding capacity, high expansibility, high physiological activity and the like, and can be used for a large number of foods, particularly development and utilization of low-sugar foods. Due to the non-special flavor and non-anaphylaxis, the potato dietary fiber can be more widely applied than soy dietary fiber.

The invention provides a formula for a pholiota nameko cultivation material. The cultivation material is characterized in that tea seed hull and tea fruit shuck are used as main raw materials, bagasse, rice bran, corn flour, gypsum powder and the like are used as auxiliary materials, and water content in the cultivation material is 63 to 65%. The invention also provides a manufacturing method for the pholiota nameko cultivation material. Compared with a sawdust cultivation material, the pholiota nameko cultivation material provided by the invention has the following advantages: 1, coarse and fine raw materials of the cultivation material are reasonably collocated, so air permeability and water holding capacity of the cultivation material are improved, the mycelial growth speed of pholiota nameko is accelerated, and time for obtaining a pocketful of pholiota nameko is shortened; 2, through natural piling fermentation, substances like lignin, cellulose, semi-cellulose and pectin in the tea seed hull and the tea fruit shuck are decomposed into simple substances which can be easily absorbed by pholiota nameko, so formation of the sporocarp primordium of pholiota nameko is promoted, the quantity of effective pholiota nameko is increased, and the output of pholiota nameko is increased by 25 to 35%; and 3, the sources of the cultivation raw materials are broadened, production cost is reduced, and the formula and the manufacturing method are suitable for being popularized and applied in an oil tea producing area.

The invention discloses a slow-release seaweed fertilizer with a high water-retaining property and a preparation method thereof. The slow-release seaweed fertilizer with the high water-retaining property comprises components in parts by weight as follows: 2-200 parts of a cross-linking agent, 3-200 parts of an initiating agent, 1-100 parts of carrageenan, 2-800 parts of acrylic acid, 10-900 parts of diatomaceous earth and 40-300 parts of specific fertilizer source. According to the slow-release seaweed fertilizer with the high water-retaining property, the surface of super absorbent resin on the outer layer is rough and porous, and the surface of carrageenan gel matrix on the inner layer is flat and compact, so that a water holding capacity and a water-retaining rate of soil can be increased, the evaporation of water is reduced, the irrigation cycle of the soil is prolonged, and the utilization rate of water is increased; and meanwhile, the soil is prevented from hardening, a good slow-release property and high compressive strength are achieved, and production, transportation and practical use of the fertilizer are facilitated.

The invention discloses fruit residue dietary fiber and a preparation method thereof. According to the preparation method, fruit peel residues and fruit flesh residues produced in the processing processes of fruit juice and fruit cans are taken as raw materials and prepared into a high-purity and high-physiological activity dietary fiber product by the process steps and equipment of impurity removal, ultrafine crushing, enzymolysis, centrifuging, concentrating, decoloring, ethanol precipitation, drying and the like. The product has the characteristics of high purity, high water holding capacity, strong swelling performance and the like.