158 results about "Chemical regulation" patented technology

Provided is a conducting polymer composition including a conducting polymer and an ionic conjugated polymer. The conducting polymer composition includes the ionic conjugated polymer having a conjugated structure, in addition to the conducting polymer, and thus, can enhance hole injection and transport capability. Furthermore, ionization potential and work function can be easily adjusted by chemically tuning the backbone of the ionic conjugated polymer. In addition, the conducting polymer composition can be dissolved in water, alcohol, or a polar organic solvent, thereby enabling a solution process and rendering spin-coating easier.

The present invention provides reagents such as cells, cell lines, and vectors, that can be used to identify mammalian genes whose expression products (RNA or protein) play a role in RNA interference (RNAi) and / or to identify chemical modulators of RNAi, or for other purposes. The invention further provides a variety of methods for identifying such genes or modulators. In particular, the invention provides a mammalian cell comprising a nucleic acid that encodes a selectable marker and one or more nucleic acid templates for transcription of an RNAi-inducing agent integrated into the genome of the cell, wherein the RNAi-inducing agent reduces expression of the marker and is not naturally found in the cell. Additional cells and cell lines comprising nucleic acids that encode one or more additional markers are also provided. According to certain of the inventive methods cells such as these are mutagenized, transfected or infected with a library of genetic suppressor elements, or contacted with a test compound. Cells in which RNAi is inhibited or activated are identified using an appropriate selective condition or screening method. The identity of the mutated or inhibited gene or the identity of the compound is then determined.

The invention relates to a municipal sludge deep dehydration composite conditioner and a dehydration method, the composite conditioner accounting for 3-30% by dry basis weight of sludge is added for conditioning modification of domestic sewage treatment plant concentrated sludge with the moisture content of about 97% to improve sludge preliminary mechanical dehydration and subsequent electroosmosis dehydration ability; the moisture content of the preliminarily dehydrated conditioned modified sludge is reduced to 70-85%; the preliminarily dehydrated sludge directly enters into electroosmosis dehydration equipment for deep dehydration, the moisture content of the sludge is reduced to 40 to 60%, landfill disposal, thermal conversion, use as building materials and other treatment, dispose and resource utilization can be directly carried out. The method can realize the continuous operation of sludge dehydration, is high in treatment efficiency, can effectively reduce the bound water content of the sludge, is good in dehydration effect, and low in moisture content of deeply dehydrated sludge cake, and is suitable for a newly-constructed sewage treatment plant and design requirements of reconstruction, expansion and contingency plans of sludge dehydration treatment of a sewage treatment plant in the prior art.

The invention belongs to the fields of development and utilization of plant growth regulating substances, and discloses a hydrogen-rich liquid plant growth regulator. The saturation of hydrogen in a solvent is 0.1 to 100 percent, and the solvent is water, a 25 to 100 percent Hoagland nutrient solution, a Kimura B nutrient solution, a TAP nutrient solution or an MS culture solution. Calcium salt, salicylic acid, salicylate, salicylic acid derivative, humid acid or humic acid salt at the final concentration of 0-1,000mu mol / L is added into the solvent. Plants, plant tissues and seeds are irrigated, sprayed or soaked, the plant growth and morphogenesis can be effectively promoted, seed germination is quickened, heavy metal accumulation is reduced, and the oxidation resistance and stress resistance / tolerance are improved. The method has the characteristics of no pollution, environmental protection, low cost, and wide application range, and is applied to the fields such as farmland chemical regulation, provenance agriculture, environment and plant nutrition, plant tissue culture and cut flower preservation time prolonging.

The invention belongs to the technical field of crop cultivation, and particularly relates to a cassava blossoming regulation and control technology. The cassava blossoming regulation and control technology is characterized by comprising selection and preparation of land, plantation management, regulation and control of the blooming period, flower retention, regulation and control of the ratio of female flowers to male flowers, measurement of the pollen activity, pollination experiment and cross breeding. Stable and superior hybrid seeds are obtained by adopting a chemical regulation and control method and a manual agricultural measure regulation and control method. The cassava blossoming regulation and control technology has the characteristics of early blossoming time, high blossoming rate and easiness in technical operation, and is suitable for cross breeding in most cassava planting areas in China.

Chemical mechanical polish (CMP) devices, CMP systems, methods of CMP, and methods of manufacturing CMP devices. A CMP device comprises a plurality of zones, with each zone having a matrix of fixed abrasive features disposed therein. The abrasive-containing matrix within each zone has material removal properties that differ from the material removal properties of the abrasive-containing matrixes of the other zones. The material removal property differences of the abrasive-containing matrixes of the zones may achieved by using different abrasive materials, densities, heights, or shapes, or combinations thereof, of the fixed abrasive features within the zones, or by using physical or chemical conditioning. When the novel CMP device is used to planarize a semiconductor wafer, a substantially planar surface with an improved CMP profile results.

Copper can be pattern etched in a manner which provides the desired feature dimension and integrity, at acceptable rates, and with selectivity over adjacent materials. To provide for feature integrity, the portion of the copper feature surface which has been etched to the desired dimensions and shape must be protected during the etching of adjacent feature surfaces. This is particularly important for feature sizes less than about 0.5 mum, where presence of even a limited amount of a corrosive agent can eat away a large portion of the feature. The copper feature integrity is protected by several different mechanisms: 1) The reactive etchant species are designed to be only moderately aggressive, so that an acceptable etch rate is achieved without loss of control over the feature profile or the etch surface; 2) Hydrogen is applied over the etch surface so that it is absorbed onto the etch surface, where it acts as a boundary which must be crossed by the reactive species and a chemical modulator for the reactive species; and 3) Process variables are adjusted so that byproducts from the etch reaction are rendered more volatile and easily removable from the etch surface. In an inductively coupled plasma etch chamber, we have observed that the preferred chlorine reactive species are generated when the chlorine is dissociated from compounds rather than furnished as Cl2 gas.

The invention provides pharmaceutical compositions, kits, and methods of treating cancer, diabetes, obesity, autoimmune disease, and benign prostatic hyperplasia using compounds that selectively inhibit pyruvate kinase M2 and an assay measuring chemical modulation of pyruvate kinase activity.

A method and apparatus for controlling cement clinker production uses a detection device disposed proximate to the feed end of a rotary cement kiln to detect the chemical analysis of a combined additive / kiln feed mixture. A controller changes the feed rate of the additive feeder to adjust for differences between the detected chemical composition and a chemical target specification such as tricalcium silicate, tricalcium aluminate, lime saturation, silica ratio or aluminum to iron ratio. The timely and convenient adjustment of kiln feed chemistry provides more uniform kiln feed chemistry resulting in better kiln operation in terms of productivity, fuel efficiency and less refractory wear. This method and apparatus can provide chemical adjustments for different grades of clinker.

The invention discloses a method of fully mechanized rice cropping during two harvesting seasons. The method comprises the following steps: A, breed selection: breeds with the growth duration being 120 to 135 days and high tillering capacity are adopted; B, timely seeding: the seeding data is from March 23rd to March 26th; C, reasonable close planting: the mechanical transplanted density is 13 to 18 thousand seedlings / mu; D, fertilization management: nitrogen control and potassium increasing are performed for first rice crop, and bud promoting fertilizer and hole applied fertilizer are respectively applied for ratooning rice within 10 to 15 days after heading of the first rice crop and 3 days after the harvesting of the first rice crop; E, water management: wetness management is performed during the later period of the first rice crop, and alternation of wetting and drying is performed during the middle and later periods of the ratooning rice; F: rice stubble height: the leaf cushion of a top second leaf is kept, namely the stubble height is controlled to be 40 cm; G, bud promoting chemical regulation: bud promoting regulating agent is applied on each of the second day and seventh day after the harvesting of the first rice crop; H, comprehensive control of diseases and pests. The method is simple, convenient to operate, is beneficial to yield increasing, promotes farmers to increase income on the premises that food safety is guaranteed, greatly reduces the labor intensity, improves the labor efficiency, reduces the labor cost, improves the rice quality, and realizes disaster reduction in year of famine.

The invention discloses a method for treating pharmaceutical wastewater and belongs to the field of water treatment. The method can guarantee pharmaceutical wastewater treatment effects and orderly comprises an adjustment stabilization stage, a flocculation precipitation stage, a composite microelectrolysis stage, a multistep Fenton stage, a chemical regulation stage and an activated carbon filtration stage of pharmaceutical wastewater. The method fully utilizes a high-grade oxidation process and is an environmentally-friendly energy-saving technology. The method has the advantages that an adjustment stabilization unit, a flocculation precipitation unit, a composite microelectrolysis unit, a multistep Fenton unit, a chemical regulation unit and an activated carbon unit are combined dynamically so that thorough oxidation-reduction of pharmaceutical wastewater is realized; and the method has a high organic matter removal rate, a low investment cost, low energy consumption, a low operation cost and strong practicality.

A fuel conditioning assembly having an elongated housing with an inlet, an outlet, and a flow through passage there between. The inlet is coupled with a fuel supply so as to receive fuel flow there through into the flow through passage, wherein a turbulent flow of the fuel is initiated and the fuel is influenced by a combination of elements, in compound or elemental form, some of which are maintained in a select location within the flow through passage by a binding element. These elements may include copper, aluminum, stainless steel, titanium, magnesium, barium, calcium, iron, zirconium, cerium, platinum, and / or palladium which chemically condition the fuel flowing through the flow through passage by rearranging the molecular bonds of the fuel with a catalytic effect. The fuel, regardless of its type is dispersed into very small droplets having high surface areas thereby lowering the vapor density of the fuel and substantially increasing a fuel burn efficiency. Further, the reaction of a variety of these elements, at least with one another, serves to create an electrostatic charge that is conveyed through the flow through passage by an elongate segment and causes fuel molecules to repel one another resulting in the aforementioned catalytic effect a conditioning of the fuel as it passes through the outlet into to any of a variety of fuel combustion assemblies.

The invention relates to beet stress-resistant yield and sugar increasing series composite growth regulator and a systematic chemical regulation method. The series composite growth regulator comprises chemical control I composite growth regulator, chemical control II composite growth regulator, chemical control III composite growth regulator and chemical IV composite growth regulator; the beet stress-resistant yield and sugar increasing systematic chemical control method sprays the four regulators on the surface of leaves respectively according to the four growth stages of the beet: seedling stage, leafage forming stage, root and sugar increasing stage and sugar accumulation stage, induces the expression of the beet stress-resistant genes, sufficiently explores the potential capability of resisting saline and alkali, drought and diseases of the beet in the full growth stage, and increases the yield and sugar content. In the saline-alkali soil with average salt content of 0.51% and Ph value of 8.4 in west Jilin where the annual precipitation is less than 300 mm, the average beet yield is 53.33 tons per hectare, an increase of 27.26%, and the sugar content is 17.6%, an increase of 2.1%.

A system and process for recovering copper from a copper-containing ore, concentrate, or other copper-bearing material to produce high quality cathode copper from a leach solution without the use of copper solvent extraction techniques or apparatus. A process for recovering copper from a copper-containing ore generally includes the steps of providing a feed stream containing comminuted copper-containing ore, concentrate, or other copper-bearing material, leaching the feed stream to yield a copper-containing solution, conditioning the copper-containing solution through one or more physical or chemical conditioning steps, and electrowinning copper directly from the copper-containing solution, without subjecting the copper-containing solution to solvent extraction.

One embodiment provides a method for stimulating hydrocarbon production in a subterranean formation, comprising: introducing a peroxide-generating compound into a desired location in a subterranean formation, wherein the peroxide-generating compound is substantially mechanically isolated from the subterranean formation until the peroxide-generating compound reaches the desired location; and allowing the peroxide-generating compound to generate peroxide in the desired location in the subterranean formation. Another embodiment provides a method for stimulating hydrocarbon production in a subterranean formation, comprising: introducing a peroxide-generating compound into a desired location in a subterranean formation, wherein the peroxide-generating compound further comprises a chemical moderator that acts to inhibit the reaction of the hydrogen peroxide within the subterranean formation; and later, allowing the peroxide-generating compound to generate peroxide in the desired location in the subterranean formation. Another embodiment provides a treatment fluid for stimulating hydrocarbon production from a subterranean formation, comprising peroxide-generating compound and a moderator.

Copper can be pattern etched in a manner which provides the desired feature dimension and integrity, at acceptable rates, and with selectivity over adjacent materials. To provide for feature integrity, the portion of the copper feature surface which has been etched to the desired dimensions and shape must be protected during the etching of adjacent feature surfaces. This is particularly important for feature sizes less than about 0.5 mum, where presence of even a limited amount of a corrosive agent can eat away a large portion of the feature. The copper feature integrity is protected by several different mechanisms: 1) The reactive etchant species are designed to be only moderately aggressive, so that an acceptable etch rate is achieved without loss of control over the feature profile or the etch surface; 2) Hydrogen is applied over the etch surface so that it is absorbed onto the etch surface, where it acts as a boundary which must be crossed by the reactive species and a chemical modulator for the reactive species; and 3) Process variables are adjusted so that byproducts from the etch reaction are rendered more volatile and easily removable from the etch surface. In an inductively coupled plasma etch chamber, we have observed that the preferred chlorine reactive species are generated when the chlorine is dissociated from compounds rather than furnished as Cl2 gas.

The invention discloses a cotton trace irrigation, water and fertilizer integrated efficient cultivation method in arid desert areas. The method sequentially includes the steps of land selection, arrangement of a trace irrigation system, soil preparation, seed selection, seed processing, film mulching and sowing, field water and fertilizer regulation, disease and insect pest prevention, chemical regulation, and harvesting at proper time. The method is characterized in that the core of the technology is that cotton film mulching and sowing and underground trace irrigation, water and fertilizer integration make roots of cotton in a moisture and nutrient absorbing state all the time in the growth period; meanwhile, surface evaporation is reduced, water and fertilizer resources can be reasonably and efficiently utilized, and field management comprises irrigation, topdressing, disease and insect pest prevention and the like. By the adoption of the trace irrigation, water and fertilizer integrated efficient cultivation method, water and fertilizer management is carried out on underground root layers, surface evaporation is reduced, the nutrient loss is reduced, and the water and fertilizer utilization efficiency is greatly improved; compared with the prior art, the water utilization rate can be increased by 30-40%, the ecological environment is protected, the cotton yield is effectively increased, and the effects of high yield and high efficiency are achieved.

Compounds and pharmaceutical compositions that down-regulate immune checkpoints such as PD-1, PD-L1 and CTLA-4 are provided. Also provided are methods of treating a disease by down-regulating immune checkpoints such as PD-1, PD-L1 and CTLA-4. The methods are useful for treating cancer and viral infection in a subject.

The invention provides a method of surface functionalization of an aramatic polyamides reverse osmosis thin film composite membrane, which is particularly characterized in that (1) the method that salicylaldehyde and a quaternary ammonium salt functional group are 'cultivated' on the surface of the aramatic polyamides reverse osmosis thin film composite membrane in a dot matrix manner is simple, convenient and easy to operate, and the 'cultivation' density can be subjected to chemical regulation according to the requirement; (2) the uniformity of the surface which is modified by the quaternary ammonium salt and salicylaldehyde functional groups in a dot matrix manner of the aramatic polyamides reverse osmosis thin film composite membrane is high, and the cellular structure and permeability of the aramatic polyamides reverse osmosis thin film composite membrane are not changed; (3) the surface of the aramatic polyamides reverse osmosis thin film composite membrane is simplified by utilizing quaternary ammonium salt and salicylaldehyde functional groups, so that the hydrophilia of the aramatic polyamides reverse osmosis thin film composite membrane can be improved, the performances of antibiosis and sterilization are improved, and the aramatic polyamides reverse osmosis thin film composite membrane is protected from chemistry damage.

The invention relates to a dewatering technique with chemical regulation and supersonic wave for oil-contained scum. Wherein, after the initial deposition to remove some water, using NaOH or Na2CO3 to regulate the pH value of scum to weak base state; adding flocculant (polyferroaluminium chloride or polyacrylamide) to stir evenly and send to supersonic treatment part for some minutes; then leading into deposition tank or pond to separate scum and water. The treated product can be recovered or send into incinerator for final treatment.

The invention provides a polyamide material with the surface modified with quaternary ammonium salt and salicylaldehyde functional groups. The polyamide material has the characteristics that (1) a method for planting salicylaldehyde and quaternary ammonium salt functional groups on the surface of the polyamide material in a dot matrix manner is simple and feasible, and the planting density can be chemically adjusted according to a demand, (2) the uniformity of the surface modification of the polyamide material by salicylaldehyde and quaternary ammonium salt functional groups which are arranged in a dot matrix manner is high, and the microporous structure and the ventilating property of the polyamide material are not changed, (3) the quaternary ammonium salt and salicylaldehyde functional groups are used for modifying the surface of the polyamide material, so that the hydrophilcity of the surface of the polyamide material can be improved, and the killing antibiosis performance of the polyamide material is improved, and (4) the salicylaldehyde functional group on the surface of the polyamide material also has a function of selectively chelating and adsorbing heavy metal ions and can be also condensed with amino acid, semi carbazide or hydrazine to prepare Schiff base for chelated resin, a solid carrier catalyst, killing antibiosis, template synthetic peptide, a photoelectric material or a separation engineering material.

The invention provides a standardized green planting method of selenium-rich peppers and relates to the technical field of crop planting. The standardized green planting method of the selenium-rich peppers comprises the following steps of 1 intensive soil preparation, 2 variety selection, 3 rational close planting, 4 intertillage strengthening, 5 timely field ponding discharging, 6 formulated fertilization, 7 chemical regulation and control, 8 comprehensive insect disease prevention and control, 9 timely harvesting and the like. The problem that at present, peppers produced by adopting a traditional peppers cultivation technique are low in selenium content is effectively solved. By means of the technical scheme, the organic selenium content in the peppers is greatly improved, the organic selenium of the peppers cultivated by means of the standardized green planting method is easily absorbed by a human body, and the standardized green planting method has the advantages of being safe in eating and high in biotransformation rate.

Provided is a microfluidic device for electrochemically regulating the pH of a fluid comprising: a cathode substrate; an anode substrate facing the cathode substrate and forming a reaction chamber with the cathode substrate; and a nonconductor which forms a boundary between the portions of the cathode substrate and the anode substrate that are capable of contacting one another, wherein at least one of the cathode substrate and the anode substrate is a semiconductor doped with impurities and the other is a metal electrode.

Polymer fibers having a novel cross-sectional geometry are used as stationary phase materials for liquid chromatography separations. Fibers of 20 to 50 micrometer diameters have surface-channel structures extending their entire lengths. Bundles of fibers having this novel cross-sectional geometry are packed in columns. Different polymer compositions permit the “chemical tuning” of the separation process. Channeled fibers composed of polystyrene and polypropylene have been used to separate mixtures of polyaromatic hydrocarbons (PAHs), Pb-containing compounds and fatty acids. Use of channeled fibers allows a wide range of liquid flow rates with very low backing pressures. Applications in HPLC, cap-LC, prep-scale separations, analytical separations, single fiber separations, waste remediation / immobilization, extraction of selected organic molecules / ions from solution, purification of liquid streams (process waste, drinking water, pure solvents), selective extraction of cell matter and bacteria from growth media, and immobilization of cell matter and bacteria are envisioned.

The invention discloses a method for synergistically regulating wettability by utilizing a shape memory polymer and temperature response molecules and relates to a method for realizing wettability regulation on the material surface. The method disclosed by the invention comprises the following steps: (1) etching a silicon chip by using a photoetching method; (2) shaping the silicon chip by utilizing PDMS (Polydimethylsiloxane); (3) shaping a shape memory epoxy resin micro array by utilizing a PDMS template; (4) grafting poly-azoisopropylacrylamide on the surface of the shape memory epoxy resin micro array; and (5) performing surface wettability regulation on the sample obtained in (4). According to the method disclosed by the invention, surface microstructure regulation is combined with surface temperature response molecules, controlled transformation from a super-hydrophilic state to a super-hydrophobic state of the wettability on the same surface by virtue of the synergistic effect of physical regulation and chemical regulation, and the obtained intelligent surface can be applied to the fields of intelligent devices, such as a micro-fluid device, biological detection, located drug release and the like, and the method is a brand new response surface preparation technology.

Monolithic cartridges including a plurality of nominally aligned polymer fibers can be used as stationary phase materials for liquid chromatography separations. Bundles of fibers are packed together so as to form capillary channels between the fibers. Different polymer compositions permit the “chemical tuning” of the separation process. The fibers can be physically or chemically bonded at spaced locations throughout the cartridge or can be packed together under pressure by use of an encasing wrap to form the capillary channels. Use of fibers allows a wide range of liquid flow rates with very low backpressures. Applications in HPLC, cap-LC, prep-scale separations, analytical separations, waste remediation / immobilization, extraction of selected organic molecules / ions from solution, purification of liquid streams (process waste, drinking water, pure solvents), selective extraction of cell matter and bacteria from growth media, and immobilization of cell matter and bacteria are envisioned.

The invention discloses a cotton planting method. The cotton planting method comprises the steps of 1, field preparation before sowing, wherein planting land is irrigated, fertilized, plowed and weeded; 2, seed screening and treatment, wherein cotton seeds are subjected to variety screening, delinting, fine screening and coating; 3, sowing, wherein an equal-line dense planting pattern is adopted for timely sowing of the cotton seeds, a drip irrigation belt and a mulching film are laid, and the equal-line dense planting pattern is an equal line spacing pattern with the line spacing of 76-80 cm and the plant spacing of 5.5-6.0 cm; 4, field management which includes reseeding, dripping for emergence of seedlings, timely intertillage, seedling release, chemical regulation, irrigation, topdressing, topping, prevention and control of diseases and pests and defoliation and ripening; 5, mechanical harvesting. Through the method, the problems that mechanically harvested cotton is low in grade, and benefits are reduced are solved; while a stable and high yield of the mechanically harvested cotton is achieved, the mechanical harvesting loss rate and seed cotton impurity rate are reduced, cleaning and processing procedures are simplified, the cotton processing grade is increased, and the purpose of improving quality and efficiency of the mechanically harvested cotton is achieved.

A system and process for recovering copper from a copper-containing ore, concentrate, or other copper-bearing material to produce high quality cathode copper from a leach solution without the use of copper solvent / solution extraction techniques or apparatus. A process for recovering copper from a copper-containing ore generally includes the steps of providing a feed stream containing comminuted copper-containing ore, concentrate, or other copper-bearing material, leaching the feed stream to yield a copper-containing solution, conditioning the copper-containing solution through one or more physical or chemical conditioning steps, and electrowinning copper directly from the copper-containing solution in multiple electrowinning stages, without subjecting the copper-containing solution to solvent / solution extraction prior to electrowinning.