81results about How to "E-buy" patented technology

The invention belongs to the technical field of building construction, and particularly relates to a construction method for supports of a box iron supporting rack of a small foundation pit. Supporting of the small foundation pit can be implemented. The construction method for the supports of the box iron supporting rack of the small foundation pit comprises the following steps of machining the box iron supporting rack of the foundation pit in advance according to the size of the foundation pit; timely hoisting the supporting rack into the foundation pit after the foundation pit is excavated; hoisting the rack out of the foundation pit by using a crane after foundation construction is finished; performing construction of a next foundation; and detaching and recycling box iron and steel plates after overall construction is finished. The construction method for the supports of the box iron supporting rack of the small foundation pit has the advantages of convenience in construction, easiness in machining and manufacturing and high recyclability. Engineering construction cost can be saved effectively, and construction progress is accelerated. The construction method for the supports of the box iron supporting rack of the small foundation pit is environment-friendly and has wide application prospects and wide application markets.

The present invention discloses process of preparing 5-methoxyl-1-(4-trifluoromehyl phenyl) pentanone as one key intermediate for preparing depression treating medicine fluvoxamine maleate with p-trifluoromethyl benzoyl chloride and magnesium 4-methoxyl butyl halide in the presence of catalyst. The process includes following four steps: 1. preparing p-trifluoromethyl benzoyl chloride with p-trifluoromethyl benzoic acid and thionyl chloride through chlorination; 2. preparing 1-halo-4-methoxyl butane; 3. preparing Grignard reagent through reaction of 1-halo-4-methoxyl butane and metal Mg; and 4. preparing 5-methoxyl-1-(4-trifluoromehyl phenyl) pentanone through reaction of p-trifluoromethyl benzoyl chloride and the Grignard reagent. The process has the features of facile material, low cost, short reaction period, high efficiency and environment friendship.

The invention discloses a method for preparing p-fluorobenzaldehyde, and belongs to the technical field of chemical analysis. N-methyl-N-methoxyl p-fluorobenzamide is synthesized by parafluorobenzoic acid serving as a raw material under the action of an amidation reagent and reduced by vitride solution to directly obtain the p-fluorobenzaldehyde, so that synthesis steps are a few, the method is easy to operate, the product is single, and the yield is high (the total yield of 59.4 percent); the vitride solution serving as a reducing agent has higher reducibility, stable property and lower price, and is convenient to store; the parafluorobenzoic acid serving as the raw material is easy to purchase and has low cost, so that good conditions are created for the mass industrial production and commercialization of the product; and the adopted raw material is nontoxic, and a catalyst is not used in the production process, so that the method is environmental-friendly, and low in emission and accords with the national industrial policy.

The invention provides a soilless culture method for greenhouse vegetable in the gobi desert, which belongs to the field of soilless organic matter cultivation of crops. According to the method, a greenhouse is built on the land of the gobi desert; trenches are dug and filled with soilless organic matters; water-saving irrigation is carried out; water and fertilizer management measures like seedling management are taken; and perennial cultivation of vegetable and floral crops is carried out without replacement of soil. The method has the characteristics of saving of labor, water and fertilizer, high efficiency, economic performance and cyclic utilization.

The invention relates to an aluminum alloy furnace. The aluminum alloy furnace comprises a liquid transfer chute, a mechanical pump, a ceramic filter plate, a refining degassing device, an aluminum liquid level detecting device, a furnace body, a top heating device or a bottom heating device, a charging opening and a furnace door. During usage, the furnace door is opened, then aluminum alloy liquid or solid aluminum alloy is added into the furnace body through the charging opening, heated to set process temperature through the top heating device or the bottom heating device, subjected to dehydrogenation through the refining degassing device, filtered through the ceramic filter plate so that solid impurities can be removed, and then lifted through the mechanical pump, the lifted aluminum alloy liquid flows through the liquid transfer chute to enter a casting device, and dynamic accurate compensation of quantitative accuracy of the mechanical pump is performed through the liquid level detected by the aluminum liquid level detecting device. The aluminum alloy furnace, namely a pouring furnace, can provide high-quality melt for aluminum alloy casting, the quantitative accuracy of the mechanical pump after compensation is high, and compared with an aluminum alloy air pressure pouring furnace, the aluminum alloy furnace has the advantages that the furnace body does not need to be sealed, the manufacturing difficulty of the furnace body is low, the cost is low, and the furnace is suitable for large-scale application.

The invention discloses a handheld type electric cable shearer. The handheld type electric cable shearer structurally comprises a static shearing head, a movable shearing head, an engagement fixed steel jacket, an electric shearing device, a handle, an anti-skidding adhesive layer and a detachable battery, wherein the static shearing head is arranged at the head end of the engagement fixed steel jacket; the static shearing head and the engagement fixed steel jacket are fastened; the movable shearing head is arranged on the static shearing head; and the movable shearing head and the static shearing head are in sliding fit. Two propulsion shearing mechanisms arranged inside the electric shearing device are driven through a rotating shaft arranged at the front end of an intelligent motor, sothat a driving solid circular rod is pushed forwards and engaged with a circular column, and a circular part formed by the movable shearing head and the static shearing head shrinks gradually so as toachieve the shearing effect; and the propulsion shearing mechanisms are simple in structure, and easy and convenient to install; and parts for maintenance are easy to purchase and long in service life.

The invention relates to a color oil flow formula for specifically calibrating range of Mach numbers and suitable for a high speed wind tunnel, and particularly relates to the color oil flow formula suitable for the oil flow experiment of the range of Mach numbers of 0.5-0.9. Using the tracer particle-calcium carbonate powder, the carrier oil-silicon oil and the coloring agent-red oil paste, yellow oil paste and green oil paste is determined, and the mass percentage relationship of the three is determined. A large number of oil flow display experiments prove that the oil flow formula can acquire high-quality color oil flow experiment image which is used for analyzing the model surface air flow pattern and deepening the understanding of the flow field information so as to achieve the flow visualization effect.

The invention relates to an oil flow formula of a high speed wind tunnel oil flow experiment clearly demarcating the Mach number range, and particularly relates to an oil flow formula suitable for theoil flow experiment of which the Mach number range is 0.5-0.9. Use of the trace particle-powdery titanium dioxide, the carrier oil-silicone oil and the diluent-oleic acid is determined through a series of experiments and the mass percent relationship of the three components is determined. A large number of oil flow display experiments are completed and indicate that the oil flow formula can acquire the high-quality oil flow test image for analyzing the model surface air flow pattern so as to achieve the effect of flow visualization.

The present invention discloses a Boer milk goat milk production improving fermented feed which is made from the following raw materials: longan shells, corn, soybean meal, eggshells, ziziphus montana branches, compound trace elements, compound microbial agents, urea, honey, and edible salt. Compared with the prior art, the Boer goat milk production improving fermented feed has the following advantages: the feed is better in palatability, each of the raw materials is easy to purchase, the cost is relative low, and the feed can meet the goat daily nutritional needs. The corresponding water content is adjusted the in the process, the fermentation time is shortened in the condition that each of the raw materials is fully fermented. Due to the fact that the protein content is low in the longan shells, by adding the urea, the protein in the longan is converted into a body protein taken advantaged by the Boer goats. Each raw material acts together and the feed can improve the milk production of ewes in the lactation period and enhance the digestion and absorption functions of the goats, and the economic benefit is obvious.

The invention provides a method for synthesizing methyl 2-methyl-4-acetyl benzoate. The method comprises the following steps: (1) adding an acylating reagent to a solution with dissolved 2-fluorotoluene, and carrying out an acylation reaction so as to obtain 4-fluoro-3-methylacetophenone; (2) dissolving the obtained 4-fluoro-3-methylacetophenone, adding a cyanation reagent, and carrying out a cyanation reaction so as to obtain 3-methyl-4-cyanoacetophenone; (3) adding acid to the 3-methyl-4-cyanoacetophenone, and carrying out a hydrolysis reaction so as to obtain 2-methyl-4-acetylbenzoic acid;and (4) adding methanol to the 2-methyl-4-acetylbenzoic acid, and carrying out an esterification reaction so as to obtain methyl 2-methyl-4-acetyl benzoate. The method has simple operation, a high reaction yield, easily purchasable reagents and instruments and low cost, and is feasible in specific practical application.

The invention relates to a Chinese medicinal extract dripping pill for treating diabetes and hyperlipidemia, which can effectively solve the problems of long dissolving time, low dissolubility and bio-availability of existing Chinese medicinal oral preparations after administration. A technical proposal provided by the invention comprises the steps of mixing polyethylene glycol (PEG) 4000 and PEG6000, or PEG 4000 and sodium carboxymethyl starch or Poloxamer, or PEG 6000 and sodium carboxymethyl starch or Poloxamer at weight ratio of 1:(1-10), and heating and melting to obtain matrix; mixing 10-30 wt% of Fructus Rosae Laevigatae extract, 5-25 wt% of Fructus Mori extract, 10-30 wt% of Rhizoma Coptidis extract, 5-20 wt% of Radix Astragali extract, 5-20 wt% of Polygoni Multiflori Radix extract, and 5-20 wt% of Fructus Corni extract, wherein the total amount of the Chinese medicinal extracts is 100%; and mixing the Chinese medicinal extracts with the matrix at weight ratio of 1:(1.5-5). The inventive dripping pill has the advantages of abundant and easily-accessible materials, simple production, and good treatment effect, and is an innovation in aspect of medicines for treating diabetes and hyperlipidemia.

The invention discloses a method of utilizing a swelling technology to prepare a nanoscale electric jet-flow 3D printing injection needle, belongs to the technical field of preparation of injection needles of electric jet-flow 3D printers and solves the technical problem that it is difficult to ensure the size, quality and cost of the nano injection needles during preparation of the nanoscale electric jet-flow injection needles in traditional methods. The method comprises the following steps of (1) laser cutting of a substrate of the nanoscale electric jet-flow 3D printing injection needle; (2) cleaning of the substrate of the nanoscale electric jet-flow 3D printing injection needle; (3) patterning of the substrate of the nanoscale electric jet-flow 3D printing injection needle; (4) preparation of nanoscale cracks of the substrate of the nanoscale electric jet-flow 3D printing injection needle; (5) post-treatment of the substrate of the nanoscale electric jet-flow 3D printing injectionneedle; (6) packaging of the substrate of the nanoscale electric jet-flow 3D printing injection needle. The method can effectively and better protect the structural integrity of the nano injection needle and improve the manufacturing quality of the nano injection needle, a manufacturing process is simple, the operation is convenient, and the manufacturing cost is reduced.

The invention relates to a sodium dichlorophenolate self-emulsifying ointment, which can be used for effectively reducing first pass effect and enhancing the curative effect. According to the technical scheme of the invention, the sodium dichlorophenolate self-emulsifying ointment is prepared by uniformly mixing sodium dichlorophenolate serving as a medicament and a self-emulsifying substrate serving as a medicament carrier; every gram of sodium dichlorophenolate self-emulsifying ointment contains 20-50mg of sodium dichlorophenolate; the self-emulsifying substrate is prepared from 12-20 percent by weight of an oil phase, 40-60 percent by weight of an emulsifier and 20-40 percent by weight of an auxiliary emulsifying agent; the oil phase consists of refined oil, glycerin monostearate and octadecanol in the weight ratio of 8:2:1; the emulsifier consists of polysorbate 80 and RH40 in the weight ratio of 2:8, or consists of polysorbate 80 and EL in the weight ratio of 6:4; and the auxiliary emulsifying agent is glycerol. The sodium dichlorophenolate self-emulsifying ointment is prepared by the following steps of: putting the oil phase into a constant-temperature water bath of 80 DEG Cfor heating and melting; adding the emulsifier, the auxiliary emulsifying agent and the sodium dichlorophenolate in sequence; dissolving and stirring uniformly; standing; and cooling for curing. The sodium dichlorophenolate self-emulsifying ointment has a rich raw material source, is easy to purchase, and is an innovation of a medicament for refrigerating and relieving inflammatory pain.

The invention relates to a vitamin E self-emulsifying ointment, which can be used for effectively enhancing the bioavailability of external vitamin E and enhancing the curative effect. According to the technical scheme of the invention, the vitamin E self-emulsifying ointment is prepared by uniformly mixing vitamin E serving as a medicament and a self-emulsifying substrate serving as a medicamentcarrier; every gram of vitamin E self-emulsifying ointment contains 20-300mg of vitamin E; the self-emulsifying substrate is prepared from 12-20 percent by weight of an oil phase, 40-60 percent by weight of an emulsifier and 20-40 percent by weight of an auxiliary emulsifying agent; the oil phase consists of refined oil, glycerin monostearate and octadecanol in the weight ratio of 8:2:1; the emulsifier consists of polysorbate 80 and RH40 in the weight ratio of 2:8, or consists of polysorbate 80 and EL in the weight ratio of 6:4; and the auxiliary emulsifying agent is glycerol. The vitamin E self-emulsifying ointment is prepared by the following steps of: putting the oil phase into a constant-temperature water bath of 80 DEG C for heating and melting; adding the emulsifier, the auxiliary emulsifying agent and the vitamin E in sequence; dissolving and stirring uniformly; standing; and cooling for curing. The vitamin E self-emulsifying ointment has a good curative effect, and is an innovation of a medicament for externally treating skin diseases.