1707results about How to "Good drainage" patented technology

A variety of steerable needles, lancets, trocars, stylets, cannulas and systems are provided for examining, diagnosing, treating, or removing tissue from a patient. The steerable needles, trocars, stylets, cannulas and systems also provide a platform for delivery of target materials, such as therapeutics, biologics, polymers, glues, etc., to a target site. An embodiment of the invention includes a steerable device for use in accessing target site in a patient comprising: a steerable member adapted to penetrate tissue; and a steering mechanism adapted to be operated by a user to apply a bending force to bend the steerable member to access the target site.

A grid-top floor tile for outdoor use includes a polymer tile having a grid-type top surface with multiple levels, such as a bi-level surface having an upper lattice and a lower lattice oriented generally transverse to the upper lattice. The multiple levels of the surface are preferably integrally formed with one another and provide drainage gaps therethrough. In a bi-level surface configuration, the lower lattice has a top surface below a top surface of the upper lattice, so as to draw residual moisture below the top surface of the upper lattice. The tile further includes a support structure, configured to support the tile on a support surface and provide drainage pathways beneath the top surface. The tile still further comprises various reinforcement members on each of the loop and pin connectors used to interlock the tiles when forming a flooring assembly.

A multi-layered sports playing field including a top layer made of substantially artificial material simulating a natural playing surface such as grass and a padding layer positioned between the top layer and the base or dirt layer. The padding layer is made of a plurality of discrete beads of substantially elastic, resilient material (e.g., foam) with portions of adjacent beads abutting one another and other portions being spaced from each other. Substantially all of the adjacent beads are preferably integrally joined (e.g., glued, fused) together at their abutting portions. The padding layer is very porous and breathable and preferably includes feet members supporting the main body of the padding layer above the base or dirt layer to create a water channel of interconnected portions to enhance water drainage to the sides of the field.

A variety of steerable needles, lancets, trocars, stylets, cannulas and systems are provided for examining, diagnosing, treating, or removing tissue from a patient. The steerable needles, trocars, stylets, cannulas and systems also provide a platform for delivery of target materials, such as therapeutics, biologics, polymers, glues, etc., to a target site. An embodiment of the invention includes a steerable device for use in accessing target site in a patient comprising: a steerable member adapted to penetrate tissue; and a steering mechanism adapted to be operated by a user to apply a bending force to bend the steerable member to access the target site.

The invention discloses a preparation method of a one-way wet conduction nano-fiber multilayer composite membrane with the wettability gradient. The method comprises the following steps that hydrophilic nano materials are dispersed in solvent, the nano materials are dispersed uniformly through ultrasound, a hydrophilic polymer is dissolved in the dispersing agent, a spinning solution A1 is obtained, and a hydrophilic nano-fiber membrane is deposited on a receiving base material through an electrostatic spinning method; hydrophilic nano materials are dispersed in solvent, the nano materials are dispersed uniformly through the ultrasound, a hydrophilic polymer is dissolved in the dispersing agent, and a spinning solution A2 is obtained; a hydrophobic polymer is dissolved in solvent, and a spinning solution B1 is obtained; the two spinning solutions are deposited on the hydrophilic nano-fiber membrane to form at least one diversion layer through the electrostatic spinning method; a hydrophobic polymer is dissolved in solvent, a spinning solution B2 is obtained, a hydrophobic nano-fiber membrane is deposited on the diversion layers through the electrostatic spinning method, and the one-way wet conduction nano-fiber multilayer composite membrane with the wettability gradient is obtained.

A control method for a spinning cycle in a washing machine is disclosed. The control method for a spinning cycle in a washing machine includes (a) step of performing a water-draining by rotating a motor at a predetermined speed lower than a resonance generation speed and (b) step of performing a main-spinning by rotating the motor at a speed higher than the resonance generation speed. The control method for a spinning cycle in a washing machine according to the present invention has an advantageous effect that over-vibration caused by unbalance may be controlled and that remaining water within the drum is drained smoothly and vibration / noise of a washing machine is minimized.

A surgical drain device includes a matrix of biodegradable polymer material and a plurality of drain tubes attached to the matrix. The device is implanted within a surgical wound to treat the presence of seromas, for example, and is used to promote drainage, tissue adhesion, and wound closure. The drain tubes converge into a common collection tube that leads wound fluid outside the body under gravity feed or negative pressure applied to the collection tube. The matrix contains an array of apertures that allow tissue contact across the device. A preferred embodiment comprises a tissue anchoring system including anchor elements such as hooks or barbs. The device can be used with a negative pressure system to further improve the drainage band can also be used with a wound dressing. The device and systems containing the device are particularly useful to promote the healing of surgical wounds from abdominal surgery.

The invention discloses a long tunnel fast construction process. The tunnel construction method in the direction from the entrance to the exit and the tunnel construction method in the direction from the exit to the entrance are the same and each construction section is respectively constructed from back to front. The construction process is as follows: 1, excavating construction at an initial construction section, the process is as follows: performing advance geology forecast, determining the excavating construction method for the current construction section, excavating and primary supporting; 2, excavating construction at the next construction section; 3, repeating the step 2 for multiple times until the construction tunnel is through, wherein in the tunnel construction process, found water seepage areas are timely subjected to draining treatment, and the secondary lining construction is synchronously performed on the tunnel holes formed by excavating from front to back. The long tunnel fast construction method is reasonable in design, simple and convenient in construction, safe in the construction process, short in construction process and fast in construction progress, thus effectively solving the defects and shortcomings such as large equipment investment, long construction period and slow construction progress of the existing long tunnel construction.

A multi-layered sports playing field including a top layer made of substantially artificial material simulating a natural playing surface such as grass and a padding layer positioned between the top layer and the base or dirt layer. The padding layer is made of a plurality of discrete beads of substantially elastic, resilient material (e.g., foam) with portions of adjacent beads abutting one another and other portions being spaced from each other. Substantially all of the adjacent beads are preferably integrally joined (e.g., glued, fused) together at their abutting portions. The padding layer is very porous and breathable and preferably includes feet members supporting the main body of the padding layer above the base or dirt layer to create a water channel of interconnected portions to enhance water drainage to the sides of the field.

The invention provides a special portable miniature drainage cover for automatic underwater local dry-method welding. A drainage cover body of the drainage cover comprises an upper end cover, an organic glass cover and a lower end cover. A clamping rod, an air inlet quick plug connector, a lower locking sleeve, a cooling air chamber and an underwater camera component are fixed to the upper side of the upper end cover and the lower side of the upper end cover through threaded connection respectively, and the upper end cover and lower end cover are connected with the organic glass cover through threads. A welding oscillator is clamped on the upper portion of a copper welding torch of a welding gun. According to the structure of a drainage sealing device, drainage felt and a felt skirt are arranged on the periphery of the lower end cover, and the drainage felt and the felt skirt are fastened on the lower end cover through hose clamps; the copper welding torch of the welding gun is fastened through an upper locking sleeve and the lower locking sleeve, the welding gun is inserted into the organic glass cover, and an elastic rubber leather sheath is arranged between the upper locking sleeve and the lower locking sleeve. The special portable miniature drainage cover for automatic underwater local dry-method welding has the advantages of being simple in structure, exquisite, convenient and fast to use, low in cost, obvious in drainage effect, and stable and reliable in welding process. Moreover, a connector with the quality of on-land welding is formed, the welding efficiency is improved and the special portable miniature drainage cover is easy to popularize.

A dressing for the first aid to wound is a composite non-woven cloth consisting of an internal layer made of the mixture of chitosan fibers and alginate fibers, a middle layer made of the hydroscopic fibers mixed with high-hydroscopicity resin, and an external layer made of hydrophobic fibers. Its preparing process is also disclosed.

It is an object of the present invention to provide an electrode for a fuel cell excellent in both durability and catalytic performance. The present invention has been made to solve the problem, which object can be attained by an electrode for a fuel cell, wherein a cathode is composed of a catalyst layer containing carbon powder supporting a catalyst and a polymer electrolyte, a polymer electrolyte membrane and a gas diffusion layer, and the amount of highly water-repellent carbon in said catalyst layer varies from the side contacting with the polymer electrolyte membrane toward the gas diffusion layer side.

The invention discloses a microbial fertilizer-plant synbiotic composition preparation and a method for preparing the synbiotic preparation. In the composition preparation, the plant synbiotic consists of probiotics, prebiotics and stabilizer; and bacillus forms zymotic fluid. The method for preparing the synbiotic preparation comprises the following steps: fermenting the probiotics; regulating bacteria amount; and preparing and homogenizing to obtain the product. Azotobacter, pralidoxime iodide and potassium bacteria in the preparation can increase soil nutrition, improve the fertilizer utilization rate and soil granule structures, promote the air permeability, water-retaining property and drainage, and overcome the defect of sunlight greenhouse continuous cropping; oligosaccharide prebiotics in the preparation can stimulate crops to improve resistance to pathogenic microorganisms, and promotes permanent planting and proliferation of the probiotics; the preparation can inhibit toxicity generated by bacteria, start self immunity system, eliminate diseases and remove evils, reduce bactericidal pesticide, has cold resistance, heat resistance, drought resistance, waterlogging resistance, saline and alkaline resistance, fertilizer damage resistance, chemical damage resistance and nutrition imbalance resistance, can promote plant root elongation and good development of capillary roots, and promote blooming and fruit yielding.

A process is provided of providing glyoxylated polymer additives to a paper making process which brings about improvements in drainage properties of a cellulosic pulp material along with the ability to increase the dry strength of a resulting paper product. The process uses concentrated glyoxal to generate a working solution of a glyoxylated polymer additive which can be generated on site in a paper mill and used within a 24 to 48 hour interval. The ability to glyoxylate polymers in a working solution concentration provides for a more active additive and which can be supplied in a more economical fashion than conventional glyoxylated polymers.

The present invention relates to a cost-effective and environmentally friendly polymeric defoamer formulation for use in various industrial applications that does not contain oil, EBS or free silicone.

A pneumatic tire includes main grooves 1 extending substantially in a circumferential direction R of the tire, transverse grooves 2 connecting adjacent main grooves, and blocks 3 formed by adjacent main grooves and adjacent transverse grooves. Each block 3 has an acute corner portion 3a and an obtuse corner portion 3b and also has a groove side extending along the main groove 1 between the acute corner portion 3a and the obtuse corner portion 3b. An inclination angle a1 of the groove side increases from the obtuse corner portion 3b toward the acute corner portion 3a. An extending direction 1a of the main groove 1 at a tread surface level is inclined toward one side of the main groove 1 with respect to the circumferential direction R of the tire, while an extending direction of the main groove 1 at a groove bottom level is inclined toward the other side.

A multistage immersion type membrane separator in which an air diffuser is disposed under a filtration part immersed in a treatment tank, characterized in that: the filtration part has plural plate-like membrane cartridges arranged in a vertically parallel multistage fashion at spaced intervals for forming a crossflow passage of a predetermined width; and that the air diffuser has a diffuser tube disposed sidewardly that is communicated at its basal end to an air supply source and has at its lower side part plural blowholes, a flushing pipe that is communicated at its basal end to the tip of the diffuser tube and has at its tip an opening serving as an outlet above the diffuser tube, and a flushing valve disposed in the flushing pipe.

An object of the present invention is to provide a tire for heavy load, which exhibits good performances in both fuel efficiency and drainage. One example of the pneumatic tire comprising a tread portion and a pair of circumferential main grooves formed in a ground contact surface of the tread portion to section the ground contact surface of the tread portion into the central region and respective side regions, wherein the tire further comprises three circumferential narrow grooves formed in the central region to demarcate four rib-like center land portions in the central region; and the central region has a structure in which openings of the circumferential narrow grooves are closed so that the rib-like center land portions adjacent to each other with the circumferential narrow grooves therebetween are in contact with and thus supported by each other when the tire is in contact with the ground.

An industrial two-layer fabric having a lower surface structure excellent in water drainage property, fiber supporting property, rigidity and wear resistance, obtained by binding an upper layer fabric and a lower layer fabric, wherein each of lower surface side wefts has a design in which it passes over one lower surface side warp, passes under one lower surface side warp, passes over one lower surface side warp and then passes under five successive lower surface side warps, while lower surface side warps each has a design in which it passes over four successive lower surface side wefts, passes under one lower surface side weft, passes over three successive lower surface side wefts, passes under one lower surface side weft, passes over two successive lower surface side wefts, passes under one lower surface side weft, passes over three successive lower surface side wefts and then passes under one lower surface side weft.

The invention relates to a preparation method of a tunnel asphalt surface layer material. A preparation method for damping porous noise-reducing tunnel asphalt pavement material is characterized in that it comprises the following steps: 1) preparation of high-viscosity and high-elasticity modified asphalt: base asphalt according to the mass ratio of each component: modifier SBS : Activated rubber powder: Viscosifying compatibilizer: Antioxidant: Stabilizer=100: 6.0~18.3: 20.2~45.7: 1.2~3.7: 0.2~1.4: 0.4~1.9, select; obtain high viscosity and high elasticity modification Asphalt; 2) Add flame retardant to high-viscosity and high-elasticity modified asphalt, heat and melt high-viscosity and high-elasticity modified asphalt to add flame retardant, stir for 3-9 minutes, and stand at 150-170°C for 15-30 minutes to obtain Flame-retardant high-viscosity high-elasticity modified asphalt; 3) according to the mass ratio, mineral material: flame-retardant high-viscosity high-elasticity modified asphalt: fiber stabilizer = 100: 3.6~5.2: 0.1~0.4, choose; noise tunnel asphalt surface material. The invention has the functions of noise reduction, flame retardancy and anti-skid.

Plastic fiber cultivating soil is prepared from 15-35% of foundation soil, 5-35% of plant fiber powder, 10-50% of perlite, 5-15% of peat soil and 5-15% of dual-component hot-melt adhesion composite fibers. The composite fibers are formed by compositing two thermoplastic polymers through composite spinning according to a sheath-core type structural mode. The difference of melting points of the adopted two thermoplastic polymers is not lower than 30 DEG C. The composite fibers are composed of dual-component hot-melt adhesion composite fibers A with the particle size being 15-25 mm and dual-component hot-melt adhesion composite fibers B with the particle size being 3-8 mm. The composite fibers A and the composite fibers B can be made of same materials or different materials. The particle size of the plant fiber powder is 0.2-0.9 mm. The plastic fiber cultivating soil has the advantages that the cultivating soil can be cured and formed and is long in service life, not prone to weathering, low in weight, high in moisture-preserving performance and breathability, capable of being recycled after being discarded and the like. The plastic fiber cultivating soil has the main effects that the problems that in the vertical greening construction process, plants cannot be easily attached to walls, planting soil is large in gravity, and the soil is not easily shaped and is prone to dispersion are solved, and the problem that large-scale mechanical seedling inserting is difficult in upland soil planting. Due to the fact that most raw materials come from agricultural and forestry waste, a contribution can be made to agriculture and environmental protection, and the fiber soil can be recycled or directly used as combustion improver after being used.

Methods for reducing the effects of wetlapping, drying, and hornification of pulp fibers and consequently increasing the pulp drainage and strength properties in the final product (i.e., paper) are provided. The method which has been developed creates a “value-added” product by the wastepaper supplier or at the pulp and / or deinking (recycled paper) mill—a wastepaper load / bale, wet pulp stock or wet lap, or dried pulp treated with or impregnated with enzymes that enhance the quality of the pulp or paper product when it is repulped and processed at the paper mill.

An elongate batten (1) adapted for positioning intermediate an inner wall framing member (2) and an outer wall cladding sheet (3) to facilitate dispersion and evaporation of moisture from a wall cavity. The batten includes at least one channel to facilitate migration and drainage of moisture between the batten and the framing member.

The invention discloses a special orchid culture media for subtropical regions and a preparation method thereof. The culture media comprises semi-weathered purple sandshale, slag, topsoil, rice husk, edible fungi cultivation residual materials and pine bark fragments with the volume ratio of 0.15-0.20:0.10-0.15:0.10-0.15:0.15-0.20:0.15-0.20:0.20-0.25; or semi-weathered purple sandshale, pine barkfragments, tea seeds or rapeseed meal and sawdust with the volume ratio of 0.17-0.25:0.45-0.50:0.03-0.05:0.25-0.30. According to the invention, the subtropical regions have abundant deposits of the semi-weathered purple sandshale which contains a plurality of trace elements required by the orchid and has the advantages of loose structure and moderate density, thus the media weight can be reduced,and the water permeability is good; semi-decomposed wood chips, coal slag, pine barks and edible fungi cultivation residual materials are recycled and supply nutrition to the orchid, thus the huge market potential is shown.

The invention discloses a compound growth factor collagen sustained-release carrier material for promoting repair of various traumas in oral and maxillofacial regions and a method for preparing the same. In order to overcome the defect of poor curative effect existing in the conventional medicaments for treating the traumas of various tissues such as an oral cavity and a face, a bioactive collagen sustained-release material is prepared by combining collagen modified by liposome, chitosan, glycosaminoglycan and the like with one or more of a basic fibroblast growth factor (bFGF), a platelet derived growth factor (PDGF-BB), a vascular endothelial growth factor (VEGF) and a keratinocyte growth factor (KGF). The bioactive collagen sustained-release material is characterized in that: each gram of bioactive collagen sustained-release material contains not less than 10ng of growth factors, and the bioactive collagen sustained-release material has the obvious effect of treating various facial tissue traumas such as tooth extraction wound, oral ulcer, facial nerve injury, mandibular defect and the like. The collagen sustained-release carrier material can continuously release an effective amount of the growth factors to the wound for a long time, fully exert the inducing effect of the growth factors and obviously shorten the time for wound healing so as to fulfill the aim of treatment.

The invention discloses a bending type heat exchanger which comprises a first collecting pipe, a second collecting pipe, a plurality of flat pipes and corrugated fins, wherein two ends of each flat pipe are connected with the first collecting pipe and the second collecting pipe, each flat pipe comprises a first section, a second section and a bending section positioned between the first section and the second section, the bending section is twisted around the length direction of the flat pipe relative to the first section and the second section to form a predetermined torsion angle, the flat pipe is bent at the bending section to form a predetermined included angle between the first section and the second section, the first section and the second section are obliquely arranged relative to the horizontal direction, and the bending sections of the flat pipes are aligned in the vertical direction to form funnel vortexes; and the corrugated fins are arranged between the first sections of the adjacent flat pipes as well as between the second sections of the adjacent flat pipes respectively. The bending type heat exchanger provided by the embodiment of the invention is good in heat exchange effect and draining effect.

The invention discloses solid waste biological treatment technology based on earthworm breeding. The invention discloses a method for treatment of sludge and solid waste and the like through earthworm breeding in combination with harmless biological treatment so that contents of nitrogen, phosphorus, potassium, amino acid, crude proteins and other nutrients can be improved after bio-fermentation technology and earthworm coelomic digestive treatment. Therefore, a large number of harmful substances and heavy metal content (lower than an NY 525-2012 agricultural industry standard), earthworm cats are raw material for organic fertilizers with high quality. Raw material is low in cost. Process is simple and easy to master. The purpose of eco-environment protection is fulfilled. The technology belongs to circular economy which is an industry greatly supported by China. The technology is suitable for scale production and promotion.

The invention discloses a tunnel maintainable type pressure reducing and water draining method and device for a water rich stratum. The method comprises the steps that (A) a water draining trough is annularly formed along a tunnel lining deformation seam; (B) water diversion holes are formed in the water draining trough in the surrounding rock direction; (C) a semi-circular pipe is fixed in the water draining trough through fasteners, and a water draining channel is formed; (D) a water collecting trough is reserved in the bottom of the semi-circular pipe, and water is led into an edge gutter through a corrugate pipe. The water draining trough is formed in a cable duct cover plate, the semi-circular pipe is arranged in the water draining trough, the water diversion holes are formed in one side of the water draining trough in an even spaced mode, a waterproof plate with non-woven fabric warps the semi-circular pipe, and the semi-circular pipe is fixed to the wall of the water draining trough on the two sides of the waterproof plate through the fasteners. The water collecting trough is connected with the semi-circular pipe through the corrugate pipe, and the edge gutter is connected with the water collecting trough. The method is easy to implement, operation is easy and convenient, blocking is not prone to occurring, and the water draining effect is good. Water pressure behind a tunnel lining and a second lining can be effectively reduced. The problem of water leakage caused by blocking of a tunnel water draining system is solved.