549 results about "Ph regulation" patented technology

A liquid pharmaceutical formulation comprising nicotine in any form for administration essentially to the lungs being acidified and / or alkalized by buffering and / or pH regulation providing for a tmax of nicotine in arterial blood of a subject within a short period of time after administration.The administration is preferably by spraying an aerosol into the oral cavity for further distribution essentially into the lungs. A method for manufacturing said formulation. Use of said formulation in therapy, such as therapy for treating addiction to tobacco.

The invention provides a high-density culture method of saccharomyces cerevisiae and a pH regulation and control method of the saccharomyces cerevisiae. The high-density culture method comprises the following steps: performing first-stage and second-stage seed enlarging cultivation; centrifugating, washing and enriching seeds; putting the seeds into a fermentation tank filled with water for fermental cultivation, and feeding molasses and a yeast extract powder solution during fermentation. The pH regulation and control method comprises the following steps: monitoring a physiological state of thallus in the fermentation tank on line and in real time, and regulating and controlling the speed of feeding molasses and yeast extract powder according to a carbon dioxide release speed, an oxygen intake speed and changes of a respiratory quotient, so as to regulate and control the pH value in the fermentation tank, wherein no inorganic salt, acid, alkali and trace elements are required to be added in the whole fermentation, regulation and control process; at the end of fermentation, performing separation and washing, and cooling saccharomyces cerevisiae thallus. The method disclosed by theinvention is easy to operate and low in cost; the prepared saccharomyces cerevisiae is edible and has high protein content; a fermentation raw material is high in conversion rate; no acid and alkali are added, so that the operation safety is improved.

The invention provides equipment and a method for treating nondegradable wastewater by utilizing catalytic oxidation of ozone. The equipment comprises a feeding system, an ozone catalytic reaction tower and a spray absorbing tower; the feeding system comprises a wastewater pH regulation device, a wastewater feeding pipeline, a hydrogen peroxide aqueous solution feeding pipeline, an ozone feeding pipeline and a pH regulator feeding pipeline; the wastewater pH regulation device is communicated with the wastewater feeding pipeline and the pH regulator feeding pipeline respectively; the ozone feeding pipeline is communicated with the wastewater feeding pipeline; the ozone catalytic reaction tower is communicated with the wastewater feeding pipeline and the hydrogen peroxide aqueous solution feeding pipeline respectively so that wastewater undergoes once catalytic reaction in the presence of a first catalyst to generate a liquid flow and an ozone tail gas flow which are subjected to initial treatment; and the spray absorbing tower is communicated with a catalytic reaction system, is used for spraying at least one part of the liquid flow which is subjected to the initial treatment, and is contacted with the ozone tail gas flow in the presence of a second catalyst to undergo second catalytic reaction.

This invention discloses a surgical prep solution formulation, either film forming or non-film forming, that changes color upon a change in pH to indicate that the solvent has sufficiently evaporated. The major components of this surgical prep solution include: antimicrobial agents, solvents, pH adjusters, color changing pH indicators, and optionally: film forming polymers, dyes and viscosity regulators. The pH of the solution may rise or fall depending on the pH of the original solution as compared with the normal pH range of the acid mantle of the human skin or the normal pH range of a sterilizing solution. As the pH changes, the pH indicator may cause the surgical prep solution to change color. Concurrently, as the fluids evaporate, the pH indicators interact with atmospheric CO2, causing the solution to change color based on the pH of the solution. The solution may also be used as coating for medical devices.

The invention relates to a water soluble body lubricant with natural antibacterial components and with pH value consistence with pH value of vagina, which is characterized by comprising the following components in parts by weight: 10-30 parts of glycerol, 1-5 parts of 1,2-propylene glycol, 0.1-3 parts of natural antibacterial components, 1-10 parts of pH regulators, 0.1-2 parts of tackifiers, 0.1-2 parts of hyaluronic acid and 48-88 parts of deionized water. The water soluble body lubricant can be used as the lubricant for sexual life, the lubricant on condoms or the external bactericide for the female to prevent and treat bacterial infection in the vagina every day, is temperate in property, has pH value consistent with the vaginal environment, has broad spectrum antibacterial effect, does not change the vaginal flora structure or result in drug resistance of bacteria, does not contain chemical preservatives, is safer to use and has certain effects on moisturizing, protecting and repairing the private parts.

The invention relates to a hydrogel wound dressing and a preparation process thereof. The finished product of the hydrogel wound dressing is prepared by using gel, a cross-linking agent, a chelating agent, pH regulator, a thickening agent, humectant and a bacteriostatic agent as raw materials, and conducting pH regulation, mixing, secondary pH regulation, drying and other processes. The hydrogel wound dressing and the preparation process have the advantages that cross-linking and curing are conducted on the basis of traditional hydrogel to form the hydrogel wound dressing, and the preparation method is simple and convenient to operate; the prepared hydrogel wound dressing overcomes the defect that water absorption of a hydrogel dressing is insufficient, the mechanical strength of hydrogel is improved, and practicability and the experience feeling are enhanced; the prepared hydrogel wound dressing can provide a wet heal environment and can also absorb a large amount of seepage; a macromolecule hydrophilic material is adopted for hydrogel, no fiber is left when the dressing is replaced, the dressing does not adhere to wound surfaces, pain is relieved, and meanwhile hydrogel is good in biocompatibility and free of toxic and side effects.

The deep coking waste water treating process belongs to the field of environment protecting engineering, and features the flocculant of PFASSB and the adsorbent of fly ash and lime. The deep coking waste water treating process includes the first flocculating pre-treatment with the flocculant, the subsequent pH regulation in a regulating pond with waste acid and waste alkali to 4-5, constant temperature vibrating adsorption in a adsorbing bed with 100-140 size fly ash in 130-150 g / l and lime in 1.5-2.5g / l for 1-2 hr, settling in a settling pond and leading out the supernatant as out water. The said process can obtain out water with COD lowered to 59.1 mg / l and NH3-N decreased from 77.67 mg / l to 19.8 mg / l.

The method of loading automobile tail gas purifying catalyst onto honeycomb carrier features honeycomb iolite carrier through water washing pre-treatment, the catalyst slurry with modifying solution in 1-10 wt%, and the modifying solution comprising surfactant 1 portion, deionized water 9-99 portions as solvent, and acid 0.5-6.0 portions or alkali 7.5-9.5 portions for pH regulation. The catalyst has great once applied amount and less coating loss.

The invention relates to a preparation method for regenerated fibroin fiber, which comprises the following steps: taking regenerated fibroin water solution containing calcium ions as spinning liquid, extruding the spinning liquid out from a spinning nozzle in the temperature range of 5-35 DEG C, then curing the spinning liquid into silk in air directly, taking alcohol-water mixed solution as a finishing agent for post-processing, then taking the silk for drying, and finally obtaining the regenerated fibroin fiber. In the invention, the raw material source is wide, the cost of the raw material is low, and in the whole process, the defects that the traditional wet spinning solvent and the coagulating bath are strong in corrosion, and are toxic; in addition, compared with the other regenerated fibroin fiber dry spinning fiber, the condition of the spinning liquid is optimized, the PH regulation and other complex steps are omitted, and the use of a series of solvent is avoided. Therefore in the method, the cost is saved, and simultaneously the environment is protected. The regenerated fibroin fiber has the advantages of being non-toxic, harmless on human body and the like, is good in biocompatibility, suitable for biological and medical materials, and has good application prospect.

The invention provides a high-stability alkali-free chloride-free liquid accelerator and a preparation method thereof. the preparation method comprises the following specific steps: dissolving 47-55 parts of a quick-setting component and 3.5-6 parts of an inorganic early-strength component into 27.9-44.2 parts of deionized water at 75-90 DEG C, adding 1-3 parts of a solubilizing component, stirring and reacting for 0.5-1 h, adding 2.5-5 parts of a complexing component, stirring and reacting for 1.5-2.5 h, adding 0.2-0.6 part of an aqueous solution of a thickening component and 0.6-1 part of an organic early-strength component, stirring for 15-30 min, cooling to 50-60 DEG C, adding 1-1.5 parts of a pH regulation component, and stirring for 15-30 min so as to obtain the high-stability alkali-free chloride-free liquid accelerator. The prepared accelerator product has advantages of no corrosiveness or pungent smell, good cement adaptability, low mixing amount, short setting time, high early strength, no loss of long-term strength and good stability under the condition of minus 15-30 DEG C.

The invention provides a treatment process for oil-water well fractured and acidified flowback liquid. The operation steps of degritting, filtration, pH regulation, gas-liquid separation, centrifugation and the liker are carried out on the flowback liquid, the initial flowback liquid can be treated to be in the degree of entering an oilfield sewage system, impacts cannot be caused to an existing sewage system, deacidification, degritting and dewatering can also be carried out on subsequent flowback liquid, and the needs of entering a crude oil output system are met. Meanwhile, the invention further provides a treatment device for the oil-water well fractured and acidified flowback liquid. The process procedures are achieved, the structure of the device is compact, the treatment device is vehicle-mounted movable equipment, and transportation and mounting in different places are convenient.

The invention discloses a starch syrup production method comprising the steps of: raw material rice processing, liquefaction, slag removing, saccharification, decolorizing, pressure filtering, ion exchange, pH regulation, condensation, and packaging. The method provided by the invention has the advantages such as fully automated operation, stable process control, high product quality, high product yield, low raw and auxiliary material consumption, low environment pollution, and the like. The technology is internationally advanced.

The invention relates to an immersed vacuum membrane distillation plant and a sewage treatment technology using the same. The immersed vacuum membrane distillation plant comprises a raw water storage tank, a gas dissolving pump, a raw water heating water tank, a membrane distillation hydrophobic membrane module, a condenser, a vacuum buffer tank, a vacuum pump, a water producing tank, a valve, a measuring instrument, and an automatic controller. The sewage treatment technology is characterized in that: raw water is subject to pH regulation, microfiltration and other pretreatment, then the pretreated raw water enters into the raw water storage tank, the sewage in the raw water storage tank is subject to gas-water mixing through the gas dissolving pump, and then the gas-water mixture enters into the raw water storage tank for heating to a specific temperature, membrane distillation is carried out at the specific temperature, the produced water after membrane distillation is directly reused, and a little thick water is treated concentrately. According to the invention, the use of the plant in sewage treatment reduces the effect of concentration polarization and temperature difference polarization in the sewage, reduces membrane pollution, increases the membrane distillation flux, prolongs the operation period of the membrane module, reduces the heat loss of the pipeline, and increases the heat utilization rate.

The invention relates to a method for constructing a monatomic catalyst based on lignin / metal supramolecular assembly and belongs to the technical fields of preparation method of a catalytic materialand application of lignin. The method mainly comprises the following steps: 1) mixing a lignin and metal ionic solution with a certain concentration uniformly and adjusting the pH to form lignin / metalsupramolecular assembly precipitate; 2) centrifuging and drying to obtain a catalyst precursor; and 3) mixing the precursor and a nitrogen source and performing program high-temperature sintering under the protection of inert gas to obtain the monatomic catalyst. Compared with the prior art, the method has distinct characteristics of low raw material cost (the lignin serves as a ligand and a carrier), simple process (pH regulation and control of the precursor and stripping without acid washing), metal dispersing uniformity (coordinated complexation and increment of defect site regulation andcontrol) and the like, and large-scale production of the monatomic catalyst is easily realized.

The invention discloses a desulphurization wastewater zero discharge treatment process for a power plant with low running cost. The desulphurization wastewater zero discharge treatment process for the power plant with low running cost comprises a pretreatment softening process and an evaporative crystallization process, wherein desulphurization wastewater is firstly conveyed to an electronic flocculator in the pretreatment softening process, then reaction is carried out with added lime and sodium sulphate, separation and precipitation are carried out by virtue of a primary clarifier, then reaction is carried out with added sodium carbonate, then reaction products enter a secondary clarifier to be separated and precipitated and then to be filtered by virtue of a multi-medium filter, and finally filtrate is discharged into a clean water tank for carrying out the evaporative crystallization process; and in the evaporative crystallization process, firstly pretreated wastewater is subjected to pH regulation, then enters a plate heat exchanger to be heated and then enters an evaporator to be subjected to evaporative crystallization, and crystal separation is carried out on crystal mush. The desulphurization wastewater zero discharge treatment process for the power plant with low running cost has the advantages that low-cost sodium sulphate is used for replacing sodium carbonate, the pretreatment softening process and the evaporative crystallization process are combined, usage amount of a softening medicament is reduced, running cost is reduced, and an evaporative crystallization operation point is controlled, so that crystalline salt is high-purity industrial-grade sodium chloride, and purity is more than 99%.

The comprehensive utilization method of pulping potash black liquor in paper-making process can eliminate pollution, low pollution treating cost and result in high economic benefit. The method includes extracting pulp-making black liquor, neutralizing its alkali with H3OP4 and HNO3 to prepare liquid fertilizer; regulating nutrients, pH regulation and fermentation to produce alcohol or feed protein, mixing the residue with other fertilizer, trace elements, organic matter, etc. to prepare composite fertilizer; adding azotobacteria, phosphate decomposing bacteria, etc. and fermentation to prepare liquid biological fertilizer or inoculating agent; and solid-liquid separation to prepare liquid fertilizer, solid fertilizer or composite fertilizer.

The present invention discloses waste water treating microwave and light catalyzing method and apparatus. After grille depurating, still standing to deposit and pH regulation, the waste water to be further treated is microwave and light catalyzed in the waste water treating microwave and light catalyzing apparatus. The apparatus includes microwave reaction oven, waste water reaction chamber inside the microwave reaction oven, no-electrode lamp inserted inside the annular fixer on the inner wall of the waste water reaction chamber, and quartz stirrer set inside the waste water reaction chamber with shaft connected to the outer rotating motor. The present invention has prolonged service life of no-electrode lamp, raised photocatalytic degrading efficiency, simple apparatus, low power consumption and other advantages, and the combined microwave effect and photocatalytic oxidizing technology results in high organic matter eliminating rate.

The invention relates to a method for extracting and separating trivalent lanthanum and trivalent actinium ions and belongs to the technical field of nuclear fuel circulation and waste liquid treatment. The method uses bis(2,4,4-trimethylpentyl) dithiophosphinic acid as an extracting agent, uses long-chain alkane as a thinning agent and uses a weak acid buffer system to effectively stabilize the pH value of the water phase of an extraction system, pH regulation does not need to be performed to the system during extraction, trivalent actinium elements can be high-selectively extracted and separated out from the water phase, and most of trivalent lanthanum elements are remained in the water phase. The method for extracting and separating trivalent lanthanum and trivalent actinium ions has the advantages that the extraction and separation performance of trivalent lanthanum and trivalent actinium ions is high and stable and the prospect of application in the field of advanced nuclear circulation is better.

The invention discloses a genetic engineering application of nitrate transport protein genome OsNRT2.3 of paddy rice, pertaining to the genetic engineering field. The nucleotide sequence of the nitrate transport protein genome OsNRT2.3 of paddy rice is SEQ ID NO.1, and OsNRT2.3a protein amino acid sequence expressed thereby is SEQ ID NO.2 and OsNRT2.3b protein amino acid sequence expressed thereby is SEQ ID NO.3. The gene of the invention is a first report on paddy rice. By participation in the transport of nitrate of paddy rice and especially under the condition short of nitrogen and poor pHenvironment, the analysis of mRNA expression shows that OsNRT2.3a is induced by low nitrate nitrogen so that the expression only occurs in lateral roots; and OsNRT2.3b has expressions in root system and parts over the ground and is responsible for the transport of nitrate. The OsNRT2.3a and OsNRT2.3b proteins are expressed in a frogspawn heterogenous system and determined as high compatible nitrate transport protein. A pH regulation and control site is found to exist in both proteins which are regulated and controlled by pH. Under low nitrogen condition, OsNRT2.3 transgenic plant shows higherefficiency in transport of nitrate, thus improving the utilization efficiency of nitrogen and the ultimate output.

A system automatically maintains at least one of a pH level and a sanitizing agent level of water in a water feature. The system includes a sensor assembly responsive to at least one of a pH level of the water and a sanitizing agent level of the water. The system further includes a controller which generates control signals in response to signals from the sensor assembly. The system further includes at least one of a first source containing a sanitizing agent material and a second source containing a pH-modifying material. The system further includes a third source comprising a valve assembly and a third container containing a liquid calibrant material. The valve assembly is responsive to at least a portion of the control signals from the controller by selectively allowing the calibrant material to flow from the third container through the sensor assembly to the water feature.

The invention provides a thallium-containing wastewater strongly oxidizing, coagulating, adsorbing and recovering process. The process includes the following procedures: thallium-containing wastewater concentration, pH regulation, strong oxidization, coagulation, flocculation, precipitated sludge treatment, pH regulation, solid impurity filtration, removal of Zn, Pb, Cd and Tl, and the like. The process has the beneficial effects that the process has the advantages of advanced technology, maturity, good effluent quality, stability in operation, conciseness in process, strong practicability, easiness in start and stop, convenience in maintenance and management, small investment, low operating cost, small floor area for construction, short construction period and large application ranges of projects; treatment of heavy metal ion polluted sewage is not limited by temperatures; the limitation that a biological method can not be used in cold regions in the north can be overcome.

The double enzyme hydrolysis process for preparing soybean peptide without bitter includes material pre-treatment, enzymolysis, terminating reaction, purifying product and mathematic simulation of the hydrolysis process. Soybean separating protein material is first pretreated at high temperature to destroy the structure of soybean protein and shorten enzymolysis time, then hydrolyzed with two kinds of proteinase of different characteristics to reach proper hydrolysis degree before high temperature treatment to terminating enzyme reaction. Through further pH regulation to precipitate residual protein, centrifugal separation and desalting the supernatant, the soybean peptide product is obtained. The soybean peptide product is ivory powder and has amino acid composition the same as that of soybean protein, balanced amino acid proportion and rich nutrients.

The invention relates to an inhibitor for preventing browning of a cut vegetable, comprising the following components: one of solvent water and ethanol or mixture thereof; one of sodium alginate, xanthan gum, carrageenan and chitosan, one or more of sodium tripolyphosphate, sodium pyrophosphate and 6-sodium metaphosphate, one or more of phytic acid, ascorbic acid, cinnamic acid, citric acid, kojicacid and edible acetic acid, and one or more of potassium sorbate, sodium dehydroacetate, sodium chloride and 4-hexylresorcinol. The inhibitor is used by soaking, and the soaking time varies with thetemperature and the air pressure of the processing environment. All the components used in the inhibitor are permitted in the GB2760-2007 (hygienic standards of food additives), and the inhibitor issulfite-free, safe and non-toxic, and can be used for fresh cut vegetables and can play the multiple roles of pH regulation, enzyme activity inhibition, oxygen removal and isolation and water retention to effectively prevent browning and play a role of anticorrosion and refreshment.

The present invention is concentrated soybean protein modifying method and features that water insoluble protein obtained through low temperature separation of defatted soybean residue is produced into concentrated protein powder in high water solubility through water dilution, pH regulation, heating, homogenization, drying and other steps. The concentrated protein powder has water solubility as high as 70-80 %, protein content of 67-70 %, processing performance of being emulsified, thickened, gelatinized, etc. and expanded use range. In addition, the process of the present invention has low cost, less pollution and good product taste.

The invention relates to an external gel used for treating diabetic foot, and a preparation method and an application thereof. Specifically, the invention relates to an external gel preparation with oxygen-carrying and antibacterial materials, and containing recombinant human epidermal growth factor (rhEGF). The preparation basically comprises: a medicine component recombinant human epidermal growth factor (rhEGF), an oxygen-carrying material, an antibacterial material, a gel substrate, a stabilizing agent, a humectant, a penetration enhancing agent, a surfactant, and a pH regulation agent.

The invention discloses a treatment device and a treatment method for acid wastewater polluted by mine heavy metals. By virtue of the treatment device, liquid can flow among a sedimentation tank, a reduction device, a desulphurization device, a PRB (Permeable Reactive Barrier) device and a pH regulating tank through a pump system and a water guide pipe system, so that the reduction of sulfate in the wastewater, desulfurization of the wastewater, removal of heavy metal pollution and the pH regulation of the wastewater are achieved. The treatment device and the treatment method have the advantages of simple process, simple operation, low cost, high efficiency and capability of realizing large-scale and engineering application of treatment of acid wastewater polluted by the mine heavy metals; meanwhile, the pollutants are placed in a relatively closed space in the whole technological process, so that the secondary pollution in the pollution treatment process can be effectively avoided, thus the treatment device and the treatment method can be widely applied to the safe treatment of acid wastewater polluted by different types of mine heavy metals, and the pollution caused by the heavy metals such as arsenic, lead, copper, zinc, chrome, cadmium and the like in the wastewater can be effectively removed.

The invention discloses a core-shell spherical MoO3 / MoS2 and a preparation method thereof. The preparation method comprises the following steps: mixing a molybdenum source, deionized water and a cationic surfactant to obtain a molybdenum source solution; mixing a sulfur source and deionized water to obtain a sulfur source solution; mixing the molybdenum source solution and sulfur source solution to obtain a mixed solution, and regulating the pH value of the mixed solution to alkalinity; carrying out hydrothermal reaction on the mixed solution subjected to pH regulation to obtain a reaction product; and sequentially carrying out washing and drying on the reaction product to obtain the core-shell spherical MoO3 / MoS2. The prepared core-shell spherical MoO3 / MoS2 has excellent photocatalytic effects. A small amount of the core-shell spherical MoO3 / MoS2 can completely perform photocatalytic degradation on organic dyes in a short time.

The invention relates to an intelligent control technology for electroplating synthetical wastewater, wherein through the steps of pH regulation of wastewater, oxidation, reduction, Cr<6+> filtering, heavy metal capture, settling of suspended solids, ion exchange and sludge treatment, the intelligent synthetical treatment of electroplating wastewater is realized, and the technology has the characteristics of high automation degree and good treatment effect. In the invention, the treatment process is finished by a sequencing bath method in a reactor, two or more reactors alternate to realize timely accurate dosing in the wastewater treatment process as well as real-time detection and control before discharge, the stability, reliability and economy of the wastewater treatment quality are guaranteed, and the wastewater treatment stably meets the requirements of the Discharge Standard for Electroplating Pollutants (GB21900-2008); furthermore, the intelligent unmanned operation can accurately control the wastewater treatment time, the drug adding amount and the wastewater treatment quality, so that the volume of the wastewater treatment equipment is reduced, and the treatment cost is lowered.

The present invention provides one kind of nanometer micro gel prepared with protein and polysaccharide and its preparation process, and belongs to the fields of biochemistry, high molecular chemistry and medicine preparation. The nanometer micro gel is formed with two kinds of protein or one kind of protein and one kind of polysaccharide differently charged in the same pH conditioned, and through heating to denature protein. Differently charged protein and polysaccharide forms electrostatic composite, micelle or deposit, and through pH regulation and heating, nanometer micro gel in core-shell structure is obtained. The nanometer micro gel may have medicine or nutriment coated through coating / diffusion to obtain nanometer edible medicine or nutriment colloid. Or, it may have perfume, cosmetics or dye coated for releasing in special environment.