40results about How to "Overcome uncontrollable" patented technology

The invention discloses a pipe network fault hydraulic monitoring experimental system and a fault identification achieving method thereof. The pipe network fault hydraulic monitoring experimental system comprises an adjustable high-level water tank, an adjustable low-level water tank, a simulating pipe network, a low-strength transient exciter, a SCADA system and a pipeline fault simulation device. The adjustable high-level water tank simulates the water supplying pressure and flow of the upstream of a monitored water transfer project and municipal water supply pipe network reservoir, and the adjustable low-level water tank discharges the downstream water quantity; according to the actual project local pipe network physical topological structure, through diversified pipelines, a simulating pipe network provided with hydraulic measuring equipment is subjected to simulated construction and arranged; the low-strength transient exciter generates a transient flow; the SCADA system collects the simulating pipe network system parameters and the hydraulic data and conducts analysis; and the pipeline fault simulation device comprises leaking holes for simulating leaking of different sizes and gate valves or fine pipes for simulating blocking of the pipelines. According to the pipe network fault hydraulic monitoring experimental system and the fault identification achieving method thereof, leaking and blocking can be both taken into consideration, the controllable low-strength transient flow exciter and the data collecting and analyzing system are combined to achieve pipe network fault identification, application is wide, control is easy, large-pressure water hammer fluctuation is not prone to being caused, components are simple, the economical and practical effects are achieved, and promotion is easy.

The invention discloses papaya crisp slices and a preparation method thereof. According to the method, the papaya crisp slices are produced by combining a microwave vacuum drying technology and a variable temperature and pressure difference puffing technology. The method comprises the following steps: drying papaya slices in a microwave vacuum manner under the conditions that the vacuum degree is 60kPa-100kPa and the microwave powder is 200W-800W until the water content is 20%-60%; and then putting the papaya slices into a puffing tank for variable temperature and pressure difference puffing, namely raising the temperature of the puffing tank to 60-120 DEG C under a normal pressure, stopping for 10min-30min, instantly reducing the pressure in the puffing tank to -0.01MPa, puffing 1-5 times in a vacuum state, cooling to 60-90 DEG C, keeping the vacuum state and the temperature until the water content of the papaya slices is 4%-5%, then cooling to 40-60 DEG and keeping the vacuum state for 15-45 minutes. The papaya crisp slices produced by the method keep the original color, flavor and nutrition of papayas, have a crispy mouth feel and can be directly used as a snack food and also be used as raw materials for making the papaya into powder. Meanwhile, the drying time is shortened to 3-6 hours by the method; compared with a traditional drying method, the method has the advantages that the efficiency is improved and the energy consumption is reduced obviously.

The invention relates to a preparation method for polyoxymethylene dimethyl ether, which mainly solves the problem that the trioxymethylene conversion rates and the selectivity of DMM3 to 8 are low in the production of polyoxymethylene dimethyl ether at present. Methylal and trioxymethylene are adopted to react under effective reaction conditions in a catalytic distillation tower, component separation is carried out during reaction, part of condensed overhead vapour flows back, the other part is recovered, the overhead reflux ratio is 1 to 10, distillate returns into the tower, part of bottom material is vaporized by a reboiler and then returns into the catalytic distillation tower, the rest is adopted as recovered liquid, wherein the methylal, the trioxymethylene and the returning distillate enter between the two reaction sections of the catalytic distillation tower, and the catalyst in the catalytic distillation tower is heterogeneous acidic catalyst. The technical scheme effectively solves the problem, and can be used in the industrial production of polyoxymethylene dimethyl ether.

The invention relates to a medicine treating carcinoma of colon and the method for preparing the same, which in detail is aglycone extract from root of Patrinia scabra Bge and the preparation method. The effective component is iridoid glycosides aglycone, the content is above 40%. The invention also provides the medicine agent and preparation. It is proved by pharmacologia test that the medicine is characterized by safe utilization, function of preventing the weight of tumor in transplanted carcinoma of colon. The extract can be produced into preparations of tablet, capsule, drop pill, granular or oral.

The invention discloses a casting all-ceramic pouring mechanism. The casting all-ceramic pouring mechanism comprises a sprue pipeline, sprue bases, a cross gate pipeline, a slag collection base, sprue passing plates and ingate pipelines. The sprue pipeline is connected to through holes of the sprue bases. The cross gate pipeline is connected to the slag collection base. The ingate pipelines are connected to the cross gate pipeline through the sprue passing plates.

The invention discloses a device and method used for manufacturing a similar simulation experiment test piece. The method comprises the following steps: (1) determining a physical structure chart of a simulating test piece; (2) determining the ratio of similar materials; (3) determining the positions of stress monitoring points; (4) installing a die; (5) putting the test piece die vertically; (6) laying rock strata; (7) putting the test piece die flat; (8) prepressing the test piece on a prepressing platform; (9) drying the test piece. The device and the method have the beneficial effects that a similar simulation experiment test piece model with different dip angles of rock strata can be manufactured according to similar simulation model parameters set in advance; not only is the manufacturing method simple and high in manufacturing speed but also the compactness and flatness of the manufactured model can meet the requirements of similar simulation experiments.

The invention relates to an application of xanthostrumarin extractive, wherein said xanthostrumarin extractive comprises diterpene compound, phenolic acid compound and other extractives while their contents are 0.5%-99%, 0.5%-99%, and 0.5%. And the production uses general extraction, separation and purification. The extraction is solvent extraction method; the separation and purification uses solvent extraction method and porous adsorption resin method. The inventive extractive can treat coryza, nasal sinusitis, etc. It has simple production and stable property.

The invention belongs to the technical field of geophysical prospecting instruments, and especially relates to a closed-loop control near-surface water source detection device and method. The device comprises an H-bridge circuit power supply module, an H-bridge circuit, a load, a current collection module, an FPGA given signal generation module, and a ring width comparison circuit. The H-bridge circuit power supply module is connected with the H-bridge circuit. The H-bridge circuit, the load, the current collection module and the ring width comparison circuit are sequentially connected to form a closed-loop control structure. The FPGA given signal generation module is connected with the ring width comparison circuit, and a given signal generated by the FPGA given signal generation module is compared with a feedback signal generated by the current collection module in the ring width comparison circuit, so as to drive the on/off of the H-bridge circuit, thereby driving the load to generate a near-surface water source detection signal. On the basis of the magnetic resonance principle, the device controls the on/off of the H-bridge circuit in the closed-loop manner, stabilizes the control signal, effectively reduces the switching current, and provides reliable support for the implementation of the detection of a near-surface water source.

The present invention relates to total glycoside extract of Chinese medicine fructus xanthii. Said total glycoside extract includes diterpene compound, phenolic acid compound and total extract of other components, their content ranges respectively are 0.5%-99%, 0.5%-99% and below 0.5%. Said invention can adopt conventional processes of extraction, separation and purification to obtain said total glycoside extract. Said total glycoside extract has the stronger pharmacological action for relieving inflammation, resisting virus, stopping pain and can obtain obvious effect for curing acute and chronic rhinitis, nascsinusitis and related diseases.

A recombinant fused egg albumen, its production are use are disclosed. The procedure is carried out by fusing, expressing, purifying to obtain final product. It can inhibit memory specifically, activate T-type cell and prolong half-life period. It can be used to large-scale prepare immune inhibiting product with high biological safety and specificity, treat, diagnose and inspect immune diseases.

The invention discloses an intelligent drug delivery apparatus for mental monitoring and protection of mental illness drug delivery. The intelligent drug delivery apparatus comprises a support frame used for supporting, a deck chair assembly for carrying mentally ill patients, a fastening device used for restraining the mentally ill patients, a drug delivery bottle device used for taking drugs forthe mentally ill patients, a brain wave monitoring system used for monitoring the mentally ill patients and a rotating arm used for fixing the drug delivery bottle device. The intelligent drug delivery apparatus is reasonable in integral structure design, great workload for medical and nursing staff when feeding the mentally ill patients can be effectively avoided, the risk of patients' resistance to suffocation caused by the patients during the drug taking is effectively reduced, and the intelligent drug delivery apparatus is suitable for large-scale popularization.

The invention belongs to the field of chemical engineering, particularly relates to a method for preparing sulphurous acid by using sulfur as a raw material, and also relates to application of a sulphurous acid product produced by the method. The method comprises the following steps that a furnace door of a combustion furnace is opened; solid sulfur is put into combustion discs; then, partial solid sulfur is fed into a dissolving box through a feeding opening formed in the upper part of the combustion furnace; meanwhile, water is added into an acid storage tank; an injection pump, a fan and an air door of the combustion furnace are opened; sulfur dioxide gas generated during sulfur combustion is exhausted through an air outlet, is subjected to temperature reduction and cooling in a position of a smoke pipe connected with the air outlet and is then absorbed by an ejector; absorption tower and tail gas absorption tower process water valves are regulated; an anticorrosion pump is started to spray process water into a tail gas absorption tower. After a sulphurous acid production system provided by the invention is used, the sulfur treatment quantity is effectively increased, and is increased to 250kg/h from the sulfur treatment quantity of 100 to 150kg/h of ordinary equipment, so that the sulfur utilization rate is improved to 99.5 percent from about 70 percent; the SO2 content of tail gas is smaller than or equal to 5mg/Nm<3>.

The invention discloses a band-notched UWB antenna with reflection zeros. A pair of bandpass piles formed by two lambada4/4 open-circuit lines and a pair of band-stop piles formed by two lambada3/4 open-circuit lines are introduced into traditional band-notched UWB antennae. A pair of nodes which is symmetrical with a microstrip line feeder of a round monopole as the axis of symmetry is arranged on the round monopole of the antenna; the open-circuit lines in the band-stop piles are all distributed along the edge of the round monopole; the two lambada3/4 open-circuit lines and the two lambada4/4 open-circuit lines are respectively symmetrical with the microstrip line feeder of the round monopole as the axis of symmetry; the microstrip line feeder of the round monopole is taken as the axis of symmetry; one ends of the lambada3/4 open-circuit lines and the lambada4/4 open-circuit lines at any side of the two sides of the axis of symmetry are short-connected on the round monopole by a symmetrical node at the side; lambada3 is the wavelength corresponding to the frequency of a reflection pole; lambada4 is the wavelength corresponding to frequencies of the two reflection zeros, and lambada4 is less than or equal to lambada3. The band-notched UWB antenna of the invention is controllable in frequency domain characteristics, simple in manufacturing, low in cost and convenient in use.

The invention relates to the technical field of bridge engineering, in particular to a construction method of a karst cave pile foundation. The construction method comprises the steps that after a mixture containing clay and rubbles is backfilled into a pile hole and is extruded and compacted, double-liquid slurry is injected into a karst cave, so that the defects that setting time of single-liquid cement slurry is long and is difficult to control, stone rate is low under flowing water condition and the like are overcome; cement grouting effect is improved, cement grouting range is expanded, a soil body can be rapidly split and solidified by combining thrown and filled clay and rubbles, and rapid leaking stoppage effect can also be achieved in a stratum with large underground water flow speed. The construction method is high in efficiency, good in effect and low in cost, the construction progress is accelerated, and the karst cave can be safely, efficiently and economically treated.

The invention relates to a high-strength wear-resistant toughened rapier head for a rapier loom. The rapier head is prepared from a glass-fiber-reinforced polycarbonate thermoplastic resin composite material. The glass-fiber-reinforced polycarbonate thermoplastic resin composite material is prepared by blending and granulating glass fibers and a polycarbonate thermoplastic resin by a double screw extruder; and the prepared glass-fiber-reinforced polycarbonate thermoplastic resin composite material is subjected to injection molding by an injection molding machine to prepare the rapier head for the rapier loom. The glass fibers are subjected to surface modification treatment before being blended with the polycarbonate, so that the rapier head for the rapier loom has the advantages of favorable wear resistance, favorable fatigue resistance, bending resistance, compression resistance, tensile resistance, high shock strength, high heat resistance and long service life.

The invention discloses a synthesis method of 2'-deoxy-beta-uridine, and belongs to the technical field of medicinal chemistry. The synthesis method comprises the following steps: preparing 1-chloro-2-deoxy-3, 5-O-bis(4-chlorobenzoyl)-alpha-D- red-furanose from 2'-deoxyribose by a one-pot methylation, acylation and chlorine substitution method, then coupling with 2, 4-bis(trimethylsilyloxy)pyrimidine, and finally deacylating and recrystallizing to obtain the 2'-deoxy-beta-uridine. By the synthesis method, the defects that when uridylic acid is used as a raw material, stereoisomers are difficult to control and the quality is relatively poor are overcome, the reaction condition is simple, the raw materials are easy to obtain, the product is high in yield and purity and the energy consumptionis reduced, so that the industrial application prospect is greatly improved.

The invention discloses a preparation method of environment-friendly modified starch, and belongs to the technical field of environment-friendly modified starch preparation. The environment-friendly modified starch is prepared through the steps of ultrasonic pretreatment, ultrasonic-mechanical esterification, washing, drying and the like. The problems that a wet method production (liquid phase condition) process is not easy to control, low in esterification degree, long in production cycle and the like are solved. The prepared environment-friendly modified starch has the esterification degree of 0.9-1.5, the whiteness of 87-94, the water content of 3-6%, the water absorption rate of 2-4%, the density of 0.9-1.2 g/cm<3> and the starch utilization rate of 95.2-96%, conforms to the indexes of Chinese standards GB/T12097, GB/T22427.6-2008 and GB/T12087-2008 for physical performance of starch and has the advantages of being high in film forming performance, coagulation resistance, transparency, anti-ageing performance, starch utilization rate and the like.

A recombinant fused egg albumen derivative, its production and use are disclosed. The procedure is carried out by fusing, expressing, purifying to obtain final product. It can inhibit memory specifically, activate T-type cell and prolong half-life period. It can be used to large-scale prepare immune inhibiting product with high biological activity and safety, treat, diagnose and inspect immune diseases.

The invention discloses a space debris recovery spacecraft, and belongs to the technical field of aerospace. The space debris recovery spacecraft comprises a housing, wherein a detection and recognition module, a thermal control system, an attitude control system and a solar power supply system are installed on the housing, the detection and recognition module is used for detecting space debris, the attitude control system is used for attitude adjustment control of a spacecraft, the thermal control system is used for heat dissipation of the spacecraft, an aggregate crushing bin is installed inthe housing and comprises a debris capturing bin, a feeding bin, a crushing bin and a crushed debris storage bin which are sequentially arranged from front to back, a first magnetofluid pipeline usedfor circulating non-Newtonian magnetofluid is connected between the debris capturing bin and the feeding bin, and a second magnetofluid pipeline for circulating magnetofluid is connected between thefeeding bin and the crushed debris storage bin. According to the invention, the conveying belt formed by the electromagnets is used for guiding and restraining the non-Newtonian magnetofluid, captureddebris is conveyed, and the problem that in the prior art, space debris is not easy to control in the space environment is solved.