1287results about How to "Has inhibitory effect" patented technology

The invention discloses an externally applied antibacterial and antiphlogistic medicament and a preparation method thereof, and relates to an antiphlogistic medicament and the preparation method thereof. The antiphlogistic medicament is processed and prepared by the following raw materials: peppermint, fineleaf schizonepeta herb, divaricate saposhnikovia root, rhubarb, amur corktree bark, common andrographis herb, fructus forsythiae, baical skullcap root, Philippine violet herb, radix salviae miltiorrhizae, lightyellow sophora root, dahurian angelica root, tree peony bark, aloe, membranous milkvetch root, indigowoad leaf, sweet wormwood herb, Chinese gentian, sinkiang arnebia root, liquoric root, Chinese gall, golden thread, cassia seed, indigowoad root, honeysuckle flower, chrysanthemum, hawthorn fruit, sessile stemona root, argy wormwood leaf, common cnidium fruit, borneol powder, borax powder, honey, propanetriol, propanediol, Tween-60, OP10, castor oil and turpentine oil. The product has good antibacterial and antiphlogistic effects, bacteria can not generate an antibody and can not generate the resistance to the medicament, the bacteria can be prevented from being mutated to superbacteria, and the antiphlogistic medicament has no toxicity or side effects and is safe to use.

The invention relates to a titanium-based multi-metal oxide catalyst for removing diesel engine NOx by NH3-SCR in a wide temperature window, belonging to the technical field of exhaust contaminant control on diesel engine tail gas. The catalyst uses nano TiO2 as a carrier, uses metal oxides V2O5, CeO2, MnO2 and Fe2O3 as main active components, and uses WO3 and MoO3 as catalyst promoter components, wherein the contents of the main active component in the catalyst respectively are as follows in percentage by weight: 48-84% of TiO2, 1-3% of V2O5, 5-15% of MnO2, 1-5% of CeO2, 1-5% of Fe2O3, 3-9% of WO3 and 5-15% of MoO3. The preparation process of the catalyst comprises the following steps: pre-activating the TiO2; and determining charge numbers of the metal oxide main active components and the catalyst promoters, and charging the metal oxide main active components and the catalyst promoters. By replacing high poisonous V oxides with Ce, Mn and Fe oxides, the invention reduces environmental hazard of the catalyst, greatly improves the low-temperature activation and the high-temperature selectivity, and effectively decreases NOx in the wide temperature window of 100-550 DEG C. The catalyst has high sulfur poisoning resistance and water poisoning resistance, and is suitable for high-sulfur diesel fuel and urban road conditions in China.

The invention discloses a quinoline and quinazoline derivative I, a preparation method, an intermediate C, composition and an application. The preparation method comprises two methods, wherein the first method comprises steps as follows: 1, a compound A and a compound B react in a solvent under the action of alkali 1 to obtain a compound C; and 2, the product C obtained in the step 1 reacts with a compound D under the action of alkali 2; and the second comprises step as follows: the compound A and a compound E react in the solvent under the action of the alkali 1. The invention further provides the application of the compound represented in formula I or medicine composition in preparation of an EGFR (epidermal growth factor receptor) tyrosine kinase inhibitor, an A431 or H1975 cell proliferation inhibitor or medicine for preventing or treating tumor diseases. The provided compound has better antitumor activity.

The invention discloses panax notoginseng active ingredient-containing medicinal toothpaste and a preparation method and application thereof. The panax notoginseng active ingredient-containing medicinal toothpaste comprises 0.1 to 0.4 weight percent of total panax notoginseng saponins and 0.2 to 0.5 weight percent of panax notoginseng polysaccharide which are panax notoginseng active ingredients,abrasive, a wetting agent, surfactant, a foaming agent, adhesive, a stabilizing agent and deionized water. The preparation method for the toothpaste comprises the following steps of: preparing materials, mixing, grinding, and degassing to obtain a toothpaste body. According to the toothpaste, total panax notoginseng saponins and panax notoginseng polysaccharide are used as the core functional components of the toothpaste, so that the toothpaste has the function of cleaning teeth, and the obvious effects of promoting recovery of dental ulcer, gingivitis and periodontitis, inhibiting swelling and aching of gums, relieving bleeding of gums, and delaying gingival atrophy and aging. The total panax notoginseng saponins and the panax notoginseng polysaccharide which are used as the active ingredients are natural plant extract, so that damage to ecological environment of normal flora in an oral cavity can be avoided, and the panax notoginseng active ingredient-containing medicinal toothpasteis suitable to be used for a long tome and is good in effect.

The invention belongs to the technical field of ultrasonic cavitation detection and signal analysis, and relates to a method and a device for separating and detecting focused ultrasonic cavitation signals. An ultrasonic transducer of a device emits cavitation detecting signals in a pulse-inversion mode, and another ultrasonic transducer receives acoustic signals diffused by ultrasonic cavitation and movement of microbubbles; a transducer of another device generates cavitation signals in the pulse-inversion mode; for each cavitation detecting experiment, the detection method extracts background signals when the cavitation does not happen, respectively calculates power spectrums of the acquired cavitation acoustic signals and the background signals, calculates the subtracted power spectrum estimation and phase position estimation, and converts the power spectrum estimation and the phase position estimation into time domain signals to filter noise of a system; and an ICA method separates target signals such as broadband noise component, subharmonic and the like in cavitation acoustic signals from other signal components and extracts characteristic parameters of the cavitation acoustic signals. The detection method has high sensitivity and can perform quantitative analysis.

The invention discloses a quinazoline derivative and a pharmaceutically acceptable salt thereof showed in a formula I, or their enantiomer, diastereoisomer, tautomer, racemate, solvate, metabolic precursor or prodrug. The invention also discloses a preparation method, an intermediate, a composition and an application. The quinazoline derivative has good antineoplastic activity.

The invention relates to a ferulic acid shown in a general formula (I) and the application of derivatives thereof to pesticides. When used as novel anti-phytoviral agents, the derivatives can well inhibit tobacco mosaic viruses, pepper viruses, tomato viruses, sweet potato viruses, potato viruses, melon viruses, maize dwarf mosaic viruses and the like, and effectively prevent and control the virus diseases of various crops such as tobacco, peppers, tomatoes, melons, grains, vegetables, beans and the like, and are particularly suitable for preventing and controlling tobacco mosaic. Meanings of each group are shown in specifications.

The invention provides a triple-enzyme hydrolysis preparation method of anti-tumor polypeptides of spirulina. The method comprises the following steps: preparing a solution having a concentration of 5 percent from spirulina powder with ultrapure water; repeatedly freezing and thawing, homogenizing and performing ultrasonic treatment, centrifuging to obtain supernate, freezing and drying for later use; adding the prepared protein fluid into pepsin for enzyme hydrolysis, controlling the pH value, adding trypsin for enzyme hydrolysis, adding chymotrypsin for enzyme hydrolysis, controlling the pH value, deactivating enzyme, cooling, and centrifuging to obtain supernate; sequentially filtering with ultrafiltration membranes having molecular weight cut-off of 10KD, 5KD and 3KD respectively to obtain three kinds of spirulina protein enzymatic hydrolysates; carrying out sephadex G15 column chromatography on 0-3K of enzymatic hydrolysate, eluting with water, and collecting four polypeptide ingredients, namely anti-tumor polypeptides of spirulina. The obtained spirulina polypeptide and monopeptide ingredients can be used for establishing a theoretical basis for development and utilization of anti-tumor medicines and health foods.

The invention relates to biological complex enzyme toothpaste and a preparation method thereof. The toothpaste is prepared from the following components by weight percentage: 5-10% of sorbierite, 15-20% of hydrous silica, 10-20% of aluminum hydroxide, 10-20% of glycerin, 2-3% of sodium lauroyl sarcosine, 1-1.3% of flavor, 0.8-1.2% of cellulose gum, 0.3-0.6% of carrageenin, 0.3-0.5% of droxyethylcellulose, 0.5-1.2% of sodium phytate, 0.15-0.3% of saccharin sodium, 0.3-0.5% of strontium chloride, 0.1-0.3% of trisodium phosphate, 0.00003-0.00008% of staphylococcus lysozyme, 0.00005-0.00015% of muramidase, 0.00001-0.00004% of proteolytic enzyme, 0.00002-0.00005% of glycosidic hydrolase, 0.00002-0.00005% of peroxydase, 0.08-0.15% of borneol, 0.1-0.15% of borax, 0.08-0.1% of vermilion, 0.1-0.15% of natrii sulfas exsiccatus, 0.05-0.1% of triclosan, 0.1-0.4% of allantoin, and the balance of water. The total weight percentage of the components is 100%. The biological complex enzyme toothpaste has complete function.

The invention discloses a preparation method of a medical ozone ointment dressing plaster. The preparation method comprises the specific steps: (1) continuously introducing medical ozone into vegetable oil, and stopping introduction of the ozone when the content of the ozone reaches 80g / L-120g / L, thus obtaining ozone oil; (2) mixing the ozone oil with vaseline, paraffin and a traditional-Chinese-medicine extract, heating for melting, then adding peppermint oil, and stirring uniformly to prepare ozone ointment; (3) soaking medical dressing in the ozone ointment, melted by heating, for 10-20 minutes to obtain ozone oil dressing; (4) carrying out sterilizing treatment on the ozone oil dressing. The preparation method of the medical ozone ointment dressing plaster disclosed by the invention has the advantages that the medical ozone ointment dressing plaster has no any chemical additives and no toxic and side effects, can prevent adherence of wounds when in use, has the effects of inhibiting and killing bacteria, promoting wound healing, moisturizing and protecting wound surfaces and the like, has better clinical application value and is convenient to use and carry.

The invention relates to a tableware detergent with an anti-bacterial function. The tableware detergent is prepared by the following raw materials in parts by weight: 5 to 10 parts of sucrose palmitate, 5 to 10 parts of alkyl glycoside, 5 to 10 parts of dodecyl dimethyl betaine, 5 to 10 parts of chitosan, 1 to 5 parts of seconary alkane sulphonate sodium, 0.5 to 2 parts of sodium alginate, 0.5 to 3 parts of sodium sulfate, 0.5 to 3 parts of sodium perborate, 1 to 3 parts of lemon acid, 1 to 3 parts of sodium chloride, 1 to 5 parts of hydroxypropyl methylcellulose sodium, 1 to 5 parts of xanthan gum, 1 to 5 parts of lipase, 0.5 to 1 parts of tea saponin, 0.5 to 2 parts of bactericide, 0.5 to 2 parts of chelating agent, 0.1 to 0.5 part of essence, 5 to 10 parts of glycerin, 5 to 10 parts of ethanol, and 20 to 50 parts of deionized water. The tableware detergent with the anti-bacterial function has the advantages that the detergency is strong, the irritation to skins is avoided, the environment-friendly effect is realized, the inhibition function on various pathogenic bacteria is realized, various food residues and oils can be quickly removed, and the spots of the tableware are avoided after cleaning.

The invention discloses preparation methods of a sustained-release microcapsule and a sustained-release composite membrane for inhibiting the monilinia fructicola. The preparation method of the sustained-release microcapsule comprises the following steps: the chitosan and the berberine are weighed, the mass ratio between the chitosan and the berberine is 9-11:0.22-0.28, the acetate solution is added, then the chitosan and the berberine are sufficiently swelled to obtain berberine-chitosan solution after stirring for dissolving, standing and air bubble removal, and the berberine-chitosan solution is added in the soybean oil containing span 80, stirred at the constant temperature of 40-50 DEG C and then emulsified for 28-32 min to form a W / O system; the glutaraldehyde solution is added for stirring for 2.5-3.5 hours, and the centrifuging is carried out so that the microcapsule is fully settled; and the preparation liquid on the upper layer is obliquely taken, the obtained microcapsule is washed with petroleum ether for 3-5 times and then dried for 23-25 hours under the vacuum at the temperature of 48-52 DEG C. The invention also provides the preparation method for the sustained-release composite membrane for inhibiting the monilinia fructicola. Both the microcapsule and the composite membrane have the sustained-release effects and have no toxic side effect to the environment and the plants since the berberine is a native compound.

The invention relates to a water-based anti-bacterial floor wax. The floor wax has main components and weight ratio as follows: 10 percent to 70 percent of water-based polymer with 30 percent to 50 percent of solid content, 0 percent to 5 percent of alkaline soluble resin with 20 percent to 40 percent of solid content, 2 percent to 12 percent of plasticizing and film-forming auxiliary agent, 0.01 percent to 2 percent of defoamer, 1 percent to 10 percent of water-based wax emulsion, 0 percent to 1 percent of wetting flow agent, 0.01 percent to 5 percent of antibacterial agent, and 0 percent to 50 percent of deionized water. The invention has suppression functions for a plurality of common bacteria with the reasonable choice of composite antimicrobial products; the invention has the advantages of high antibacterial efficiency, long-time medicinal effect, good decorative effect, safety and environmentally protective performance.

The invention discloses a method for preparing arylamine by catalytic hydrogenation of an aromatic nitro compound. The method is to obtain the arylamine of a formula (I) by the catalytic hydrogenation of an aromatic nitro compound shown by a formula (II) and hydrogen in the presence of a catalyst and an ammonium compound serving as an inhibitor. The method disclosed by the invention can obviously reduce the generation of azo compounds and improve the yield and quality of the product.

The invention discloses a bacillus and application thereof, and belongs to the field of biological control. A bacillus strain is bacillus methylotrophicus C1, and a preservation number of the bacillus strain is GDMCC No.60046. The application includes that the bacillus can be used as a biological control strain to be applied to antagonistic crop pathogenic bacteria; the bacillus can be used as a lipopeptide and / or protein fermentation strain for inhibiting crop pathogenic bacteria; the bacillus can be used as a growth promotion strain to be applied to promoting growth of crops; the bacillus can be used as a fermentation strain for auxin. The bacillus and the application have the advantages that the strain has broad-spectrum antibacterial activity; lipopeptide substances with effects of inhibiting fusarium graminearum cannot be generated, but proteins with effects of inhibiting the fusarium graminearum can be generated; effects of promoting growth of corn can be realized by the strain C1, the root lengths and the stalk lengths of the corn of experiment groups are 3.15 and 3.05 times the root lengths and the stalk lengths of contrast groups respectively as compared with contrast, the root, stalk and seed weights of the corn of the experiment groups are 5.02, 4.33 and 1.4 times the root, stalk and seed weights of the contrast groups, and only little auxin can be generated by the strain C1.

The invention discloses application of fermentation liquor of bacillus subtilis (CICC No. 10321) in inhibition of growth of penicillium and aspergillus niger. The bacillus subtilis (CICC No. 10321) plays a role in inhibiting penicillium and aspergillus niger (the penicillium and aspergillus niger inhibiting circle is greater than 20 cm), the inhibition effect is good, and the duration is long. The bacillus subtilis is simple in culture, short in cycle and low in cost, is suitable for serving as a mold inhibitor and is used for inhibiting the growth of penicillium and aspergillus niger in easily-mildewed goods, such as feed and the like, and the residues of mycotoxins in animal foods are reduced effectively.

The invention relates to bidirectional burkholderia as well as a culture method and an application thereof and belongs to the field of plant protection (microbial pesticide). The preservation number of the bidirectional burkholderia is CCTCC NO: M2013145. The culture method of the bidirectional burkholderia comprises the following steps: adding 1ml of 2-day-aged seed bacterial strain to an LB (Lysogeny broth) culture medium with the liquid loading of 50ml under a fermentation condition, and culturing for 20-24 hours at the temperature of 25-30 DEG C at the rate of 200r / min. The bidirectional burkholderia has a remarkable inhibition effect on rice sheath blight disease, rice blast, colletotrichum musae, oxysporum, fusarium asiaticum, peronophythora litchi, sugarcane alternaria tenuis, cladosporium fulvum, xanthomonas oryzae, bacterial leaf steak and the like, can be used for the biological prevention and control of plant pathogenic bacteria, has the advantages of low toxicity, easy degradation, environmental friendliness and the like and has a bright application prospect.

The invention discloses a lignum naucleae leaf extract which is characterized in that the extract is obtained by using one of the following methods: (1) the lignum naucleae leaf extract is obtained by water extraction and impurity removal of traditional Chinese medicine lignum naucleae leaves; (2) the lignum naucleae leaf extract is obtained by alcohol extraction and impurity removal of the traditional Chinese medicine lignum naucleae leaves; (3) the lignum naucleae leaf extract is obtained by lipophilic organic solvent extraction and impurity removal of the traditional Chinese medicine lignum naucleae leaves, and the lipophilic organic solvent includes but not limited by n-butyl alcohol or ethyl acetate. The invention further discloses a preparation method of the lignum naucleae leaf extract, a preparation and a new purpose. The lignum naucleae leaf extract of the invention has exact effects of clearing heat and removing toxin. The extraction process of the invention is simple and reasonable, which can obtain the effective parts. The invention opens up a precedent of obtaining the lignum naucleae leaf extract from the lignum naucleae leaves to be used for the drugs for clearing heat and removing toxin, which can not only ease the shortage of raw materials, but is also conductive to the sustainable and rational development, utilization and protection of lignum naucleae resources.

The invention relates to laundry detergent, in particular to efficient laundry detergent with bacterial inhibition and sterilization functions. The laundry detergent comprises components in percentage by weight as follows: 17%-23% of a surfactant, 1%-3% of an acid aid, 0.2%-0.5% of caustic soda flakes, 0.3%-0.5% of a chelating agent, 3%-6% of heartleaf houttuynia herb extract, 0.2%-0.4% of a preservative, 1%-2% of a thickening agent, 0.5%-1% of acorus gramineus essential oil, 1%-2% of fructus amomi essential oil, 1%-2% of licorice extract, 0.6%-1.5% of tea saponin, 0.4%-0.8% of lavender essential oil, 0.6%-1.2% of mint essential oil and the balance of deionized water. The efficient laundry detergent has an inhibiting function on streptococcus hemolyticus, staphylococcus aureus, hemophilus influenza, catarrhalis, pneumococcus, escherichia coli, shigella dysenteriae and salmonella typhi, also has an inhibiting function on various viruses and further has a body immunity enhancing function and an anti-tumor effect.

The invention relates to a special compound feed for litopenaeus vannamei. The feed is composed of following components in percentage by weight: 18 to 24% of steam fish meal, 17 to 22% of soybean meal, 15 to 24% of peanut meal, 2 to 4% of spray-dried animal blood cells, 2 to 4% of squid paste, 2 to5% of yeast extract, 20 to 25% of flour, 2 to 3% of fish oil, 1 to 2% of soybean oil, 1.0% of shrimp multi-vitamin, 2.0% of shrimp multi-mineral and 1.0% of litopenaeus vannamei special feed addictive, and the sum of the components mentioned above is 100%. The nutrition composite of the compound feed is obtained from numerous tests according to the nutrition need of litopenaeus vannamei, can fully satisfy the nutrition need of litopenaeus vannamei, improves the immunity and disease preventing ability of litopenaeus vannamei, and promotes the healthy growth of litopenaeus vannamei.

The present invention provides a recombinant PAI-1 inhibitor, which is an uPA hydrolase domain with S195A mutation or a PAI-1 hydrolase domain with S195A mutation, and has PAI-1 binding force. The present invention further provides a composition containing the inhibitor, and uses of the composition in preparation of treatment drugs and PAI-1 detection reagents. According to the present invention, the uPA or tPA hydrolase domain is modified to optimize the binding force with the PAI-1 so as to construct the recombinant PAI-1 inhibitor, wherein the recombinant PAI-1 inhibitor contains the least S195A point mutant.

The invention provides a dual-enzyme hydrolysis preparation method of anti-tumor polypeptides of spirulina. The method comprises the following steps: preparing spirulina holoprotein with pure water by means of repeated freezing and thawing, homogenizing and ultrasonic treatment; preparing spirulina polypeptides by means of an alkaline protease Alcalase 2.4 and papain dual-enzyme hydrolysis method; separating and purifying by utilizing an ultrafiltration membrane to acquire spirulina polypeptides having molecular weight ranges of 0-3K, 3-5K, 5-10K and more than 10K. The obtained spirulina polypeptide and monopeptide ingredients can be used for establishing a theoretical basis for development and utilization of anti-tumor medicines and health foods.

The invention discloses a soybean paste, wherein the ingredients include (by mass ratio) beans : flour : drinking water : drinking water : Eighteen flavoring = 35-45 : 3-5 : 40-50 : 10-18 : 0.1-0.8, the Eighteen flavoring is prepared from the following Chinese medicinal herbs: purple perilla, clove, magnolia flower, wild pepper, dahurian angelica root, Cinnamomum cassia, aniseed, common fennel fruit, dried ginger, galangal rhizome, amomum fruit, mace nutmeg, cherokee rose, Shannai, apple, Piper longum, banksia rose and pepper by the weight ratio of 5.0-10.0 : 5.0-10.0 : 5.0-10.0 : 5.0-10.0 : 3.0-8.0 : 3.0-8.0 : 3.0-8.0 : 3.0-8.0 : 1.0-5.0 : 1.0-5.0 : 10.-5.0 : 1.0-5.

The invention relates to a preparation method of epothilones B. In particularly, the invention provides a technique method to prepare epothilones B through adopting 100 to 500 liters fermentor to ferment and to separate epothilones B in large scale. The invention also relates to the preparation and application of epothilones B in preparation of gleevec resistance chronic myeloid leukemia treatment drug.

A health-care food for preventing and treating atherosclerosis, hypercholesterolemia, hyperlipemia, hypertension, coronary heart disease, angina pectoris, tumor, etc, and balancing the functions of organs is prepared from 10 Chinese-medicinal materials including anemarrhena rhizome, ginger, wolfberry fruit, yam, etc.

The invention discloses micro-capsule preparation and a method for preparing the same, belonging to the microorganism field and the preparation field. The micro-capsule preparation uses sodium alginate as capsule material solution and CaCl2 as curing agent and contains Enterococcus Faecium the preservation number of which is CGMCC No.2516. The invention has the advantages that: the pre-embedding and after fermentation method is adopted, thereby thalli can be proliferated continuously under the micro-capsule microenvironment; the size of the cell density is controllable; the density of the micro-capsule thalli higher than that of the after embedding method can be reached; the pre-embedding method greatly reduces the utilization amount of cells during the encapsulization process, avoids the adverse factors of low encapsulization efficiency and productive rate due to impact of the cell density in the after embedding process, and more easily obtains encapsulated products with better shape and stability.

The invention provides a wood preservative. The wood preservative contains ammoniacal copper quaternary, pentachlorophenol, coal tar, copper (II) dimethyl dithiocarbamate, stramonium, pinellia ternate and eusteralis stellata. The wood preservative is characterized by consisting of the following raw materials in parts by weight: 20-40 parts of chitosan, 30-35 parts of pentachlorophenol, 15-30 parts of coal tar, 10-25 parts of stramonium, 20-30 parts of pinellia ternate, and 12-20 parts of eusteralis stellata. The wood preservative does not contain copper salt, all the raw materials in the adopted composite formula of traditional Chinese medicines plus chemicals are completely environmentally friendly, the traditional Chinese medicines are cheap and the wood preservative has antibacterial and insect-prevention effects.

The invention relates to a method for cultivating high-yield and high-quality winter wheat by use of biogas liquid. The method mainly comprises the following steps: soaking seeds with biogas liquid at 16-20 DEG C for 8-12 hours before seeding; applying 11-20 kg of urea per 667 m<2> in combination with intensive farming land preparation or irrigation of soil moisture; at the later period of wheat jointing, applying 3,000-6,000 kg of biogas liquid per 667 m<2> in combination with irrigation of soil moisture, wherein the nitrogen dosage for topdressing is 50-75% of the conventional dosage of nitrogenous fertilizer; and spraying biogas liquid at the middle-and-later period of wheat, wherein 35-45 kg of biogas liquid diluted by 0.5-1 times is sprayed per 667 m<2> at the booting period, 35-45 kg of stock biogas liquid is sprayed per 667 m<2> at the pustulation period, and a proper amount of kerosene, washing powder and monopotassium phosphate is dissolved and sprayed 1-2 times in the pustulation period. The biogas liquid using method is convenient and practical, has low cost, reduces the pollution of nitrogenous fertilizer and serious adverse impact of pesticide residue in the production of high-quality wheat, improves the seed quality, and realizes cultivation of high-quality wheat, resource utilization of agricultural waste and sustainable development of agriculture.

The invention provides an application of amaranthus in plant disease prevention and treatment, wherein amaranthus leaves are taken as the raw material and extracted by an organic solvent to obtain an extract, acidovorax avenae subsp.citrulli, xanthomonas axonopodis pv. Citri and rhizoctonia solani are selected as sites of action, and research on indoor bacteriostasis effect and in-vitro and pot culture control effects is performed to find that the amaranthus leaf extract has an inhibition effect on acidovorax avenae subsp.citrulli, xanthomonas axonopodis pv. Citri and rhizoctonia solani; and the in-vitro and pot culture tests also indicate that the amaranthus leaf extract has certain prevention and treatment effects on acidovorax avenae subsp.citrulli, xanthomonas axonopodis pv. Citri and rhizoctonia solani; and all the facts show that the amaranthus has prevention and treatment effects on the plant diseases in addition to edible and medical values. The research discovers and expands the functions of the vegetable, and simultaneously provides a new train of thought and a new way for studying and developing biopesticide for preventing and treating the plant diseases.

The invention discloses a serial power quality compensator based on an alternating current (AC) / AC chopper. The serial power quality compensator consists of an AC / AC chopper circuit, a compensation transformer and an output filter circuit. The serial power quality compensator has the advantages of: having no reactor of an induction regulating compensator, and reducing the whole volume weight when the compensation transformer works in the state of high-frequency modulation; carrying out stepless smooth regulation on an output voltage so as to have quick dynamic response; carrying out control on an instantaneous value of the output voltage, having high sinusoidal quality of the wave form of the output voltage, and playing a role in inhibiting voltage flickering of an outside power grid, harmonic wave and the like; and being simple in circuit structure and easy in implementation, and having less used devices in the AC / AC circuit and less circuit overhead.