134results about How to "Strong contact" patented technology

An anode-supported tubular fuel cell stack includes interconnect structures that are oxidation resistant at high temperature, flexible to accommodate thermal expansion stress and to provide strong electrical contact, have low electrical resistance, and are inexpensive and light weight. The interconnect structures may be formed out of metal sheet, which provide improved heat homogeneity throughout the fuel cell stack because of the high thermal conductivity of the metal. The interconnect structures are further shaped to provide resilience or spring-like features to allow movement between the tubular cells. Thus good electrical contact, thermal stress release, and shock absorption are simultaneously achieved.

Process for preparing composite silicon/carbon material composed of carbon-coated silicon particles, wherein the following successive steps are carried out: silicon particles are mixed with a solution of an oxygen-free polymer in a solvent, whereby a dispersion of silicon particles in the polymer solution is obtained; the dispersion obtained in step a) is subjected to a spray-drying operation whereby a composite silicon/polymer material consisting of silicon particles coated with the polymer is obtained; the material obtained in step a) is pyrolyzed whereby the composite silicon/carbon material composed of carbon-coated silicon particles is obtained.

The invention discloses a high-conductivity lead-free silver paste used for a crystalline silicon solar cell and a preparation method thereof. The high-conductivity lead-free silver paste is prepared by compounding nano silver powder and micro silver powder, wherein a silver electrode formed by performing optimized grading and sintering on the micro silver powder has extremely high conductivity. The nano-modified high-conductivity lead-free silver paste comprises the following components in percentage by weight: 8 to 9 percent of micro silver powder with the grain diameter of 2 to 4.5 mu m, 56 to 62 percent of micro silver powder with the grain diameter of 5 to 10 mu m, 5 to 10 percent of nano silver powder, 3 to 5 percent of glass cement, 3 to 5 percent of inorganic additive, and 15 to 20 percent of organic carrier, wherein the grain diameter of the nano silver powder is 20 to 70 nm; the glass cement is a bismuth-silicon-boracium mixed glass system; and the organic carrier consists of an organic solvent and an organic additive. The high-conductivity lead-free silver paste has a simple preparation process, is simple and easy to produce in large scale, and has practical significance of improving the photoelectric conversion efficiency of the crystalline silicon solar cell.

A radiating member (2) of the present invention comprises a plurality of first wall (2a), and a second wall (2b) connected to the first wall (2a) and formed substantially at right angles to the first wall (2a), which are alternately and continuously formed. The first wall (2a) are arranged substantially perpendicular to the surface (1d) of a laminated cell (1) such that they are not collapsed by loads applied from the top and bottom surfaces of the laminated cells (1). The second wall (2b) make up a flat plane substantially parallel with the surface (1d) in order to gain a heat transfer area and uniformly apply the loads to the laminated cell (1). To ensure a largest possible area for the second wall (2b), R-sections (2c), which connects the second wall (2b) with the first wall (2a), are formed to have a smallest possible radius.

The invention provides aporate magnetic-attraction power supply socket and plug which are in abutting joint and adsorption by utilizing the magnetic attraction principle. An abutting-joint surface has convex and concave contact terminals but has no holes; a certain moving distance existing between a socket contact terminal and an electrifying post head. Only when the socket and the plug are in abutting joint, the electrifying post head and the contact terminal are connected and electrified due to the magnetic attraction action; when the plug is pulled out, magnetic fore is lost, and a spring in the socket can immediately separate the electrifying post head and the contact terminal for replacement. The invention has the advantages that firstly, a human hand or a foreign body can not insert inside the socket, and can not be electrified even contacting with the contact terminal, thereby safety is ensured; secondly, the plug and the socket have strong adsorption force and good contacting performance, and can not loose; and thirdly, the structure is simple, the combined design is easy, and product diversification is facilitated.

A socket contact which is connected to an opposing planar contact, comprises: a long connection part to which a lead wire is connected; and a contact connection part which is connected to the opposing contact provided on the base-end side of the connection part. The contact connection part comprises a planar contact body, a pair of extended arms which are almost parallel and extends from the base-end side of the contact body, and a pair of reversed arms which are almost parallel and extends from the tips of the pair of extended arms to the contact body, the tips of which are mutually joined. The pair of reversed arms are provided with a pair of contact points which are mutually opposed and into which opposing contacts can be inserted.

The invention relates to a preparation method of a botanical insecticide, which comprises the steps of (1) extracting alkaloids; (2) extracting plant essence; (3) adding each pure alkaloid extracted in the step (1) to an emulsifying agent and stirring, and uniformly mixing the various alkaloids added with the emulsifying agent; and (4) adding the plant essence obtained in the step (2) to the alkaloids obtained in the step (3), stirring and adding de-ionized water under a stirring condition. The insecticide disclosed by the invention has strong activities such as touch killing, stomach toxicity, repelling and avoiding on multiple pests, and has excellent control efficiency on the various pests; in addition, the ingredients of the insecticide come from a pure plant source, and therefore, the botanical insecticide is an excellent environment-friendly insecticide.

The invention discloses a composite natural insecticide for preventing and controlling red spiders and a preparation method of the composite natural insecticide. The composite natural insecticide comprises the following components in parts by weight: 50 to 80 parts of tomatoes, 30 to 50 parts of garlic, 20 to 40 parts of green Chinese onion, 20 to 40 parts of onion, 5 to 10 parts of ginger, 5 to 10 parts of Chinese prickly ash and 1 to 3 parts of soap. The preparation method comprises the following steps of (1) weighing the Chinese prickly ash in proportion, adding water, heating to be in a slightly boil state, keeping the slightly boil state for 3 to 4 hours, standing, cooling and filtering, so as to obtain a filter liquor I for standby application; (2) weighing the tomatoes, the garlic, the green Chinese onion, the onion and the ginger in proportion, mashing, adding the filter liquor I prepared in the step (1), soaking for more than 24 hours, filtering, adding the soap and stirring to completely dissolve, so as to obtain a raw liquor of the composite natural insecticide. Raw materials of the composite natural insecticide are natural and environmental, and after being applied, the composite natural insecticide is harmless to human bodies and environments; the composite natural insecticide has a relatively strong tagging effect on the red spiders and has the advantages of good effect and no resistance; the preparation method has the advantages of simplicity and easiness in raw material obtaining and is suitable for industrial production.

This invention relates to a mosquito- repelled antibiosis latex paint and its production process. According to weight it includes 97 tp 98% latex paint and 2 to 3% hygienic finishing agent. The latex paint is composed by water, 7 to 10% styrene / acrylate copolymerization latices, 7 to 10%pigment, 38 -45% inert pigment, 12 to 23% accessory ingredient. Hygienic finishing agent is composed by 99.5 to 100% technical grade spin additive and 0 to 0.5% plant extractant. It first mix water, accessory ingredient, pigment, inert pigment and styrene / acrylate copolymerization latices, then add hygienic finishing agent and averaging, regulate pH 7.5 to 8.5, then gain product. This latex paint has dual efficacy of expelling and killing mosquito, and antibiosis function, reach Class A stand ard of GB17322.1 - 1998 stated.

A spline drive fastener system involves a fastener wherein a drive engagement surface is formed in the head of the fastener. The drive engagement surface includes eight separate points of engagement. The points of engagement are arranged on eight radial slots formed by the central axis of the fastener head. A method of forming the drive engagement surface comprises forcing a punch against a fastener workpiece to form at least eight radial slots.

The invention provides an efficient and low-noxious compound formulation for paddy pest control, having the effective components of abamectin or fipronil, buprofezin, imidacloprid assisted with the emulsifier, the insecticide synergist combination. The ternary mixtures of pesticides of the invention can complement several different mechanisms of insecticide mixed together to complement each other, the first application, we can effectively combat a wide range of pests rice. At the same time be able to delay the rice pest resistance to produce a single Pharmacy to address the rice problem of pest resistance, a decrease of rice, the pesticide residues in aquatic products, protection of ecological environment.

The invention discloses a stored grain pest insecticide. The insecticide comprises, by weight, 30-42 parts of vitex negundo linn, 30-42 parts of Chinese prickly ash, 20-30 parts of chenopodium ambrosioides, 22-30 parts of folium eucalypti, 1-4 parts of dispersing agent, 70-80 parts of carrier and 1-8 parts of adhesive. Various raw materials of the stored grain pest insecticide cooperate with each other, advantages are complementary, the corrected death rate of sitophilus zeamais, sitophilus zeamais motschusky, tribolium castaneum and bruchid is high, the insecticidal effect is remarkable, residues are not generated, and the insecticide is environmentally friendly, convenient to use and long in validity period.

In a surface mount LED, circuit patterns can be formed on selective portions of the bottom and inner circumferential surfaces of a recess in a substrate in which an LED chip is mounted. A sealant material composed of a light transmissive resin can be applied to cover the LED chip for sealing. An intimate contact interface is formed between the material of the insulator/substrate which is exposed at a portion with no circuit pattern formed thereon, and the light transmissive resin. The strength of intimate contact can be enhanced to prevent the circuit patterns and conductive adhesive from peeling off at an interface therebetween.

The invention discloses a vegetable insecticide and relates to the field of agricultural drug production. The vegetable insecticide comprises, by weight, 8-12 parts of sophora flavescens, 15-25 parts of pepper leaves, 10-25 parts of tobacco leaves, 20-35 parts of argy wormwood, 15-30 parts of oleander leaves, 15-20 parts of pericarpium citri reticulatae, 15-25 parts of radix glycyrrhizae and 5-8 parts of spreader. The vegetable insecticide is simple in process, convenient to operate, capable of realizing broad-spectrum insect killing, strong in contact killing, safe and reliable to use, nonhazardous to human and livestock, free of residue, free of environmental pollution and reliable in efficacy, Chinese medicinal herbs resources are fully excavated and utilized, production cost is lowered greatly, insects do not produce antibodies, and continuous use can be realized.

The invention discloses a portable small-size accumulated snow sweeping device. The portable small-size accumulated snow sweeping device comprises a columnar shell, supporting legs fixed to the bottom of the columnar shell, and universal wheels fixed to the bottoms of the supporting legs. A hollow structure located at the bottom and an iron core located above the hollow structure are arranged inside the columnar shell. A coil is wound around the surface of the iron core. The columnar shell is provided with a set of permanent magnets located inside the hollow structure. A set of limiting protrusion structures is fixed to the bottoms of the permanent magnets of the columnar shell. A set of connection rods is fixed to the centers of the bottoms of the permanent magnets, and the connection rods penetrate through the centers of the limiting protrusion structures. The portable small-size accumulated snow sweeping device is suitable for being used on small and medium-scale occasions, portable and flexible; through joint rotation of multiple sets of brooms, accumulated snow on the ground is effectively swept away; and in addition, the device has a buffer effect, and an effective compression effect can be provided for the multiple sets of brooms, so that contact between the brooms and the ground is better, and accordingly the cleaning efficiency of each cleaning is improved.

The invention relates to a device for adjusting the temperature of a loose material (20), comprising a heat exchange section (2). A buffer section (1) for the loose material (20) is located at front of the heat exchange section, while a material discharge section (3) is located behind the heat exchange section. A heat exchanger tube (7) is arranged on the heat exchange section (2) along the gravity direction. Besides, a feeding device (8) and a discharging device (9) for carrying a heat fluid are communicated with the exchange section (2).

A positive resist composition comprising:

• • (A1) a resin containing at least one type of repeating unit represented by the specific formula and additionally containing at least one type of repeating unit represented by the specific formula, which increases the solubility in an alkali developing solution by the action of an acid, and
  • (B) a compound which is capable of generating an acid by the action of actinic ray or radiation.

The invention relates to a plant source pesticide. The plant source pesticide comprises a plant effective ingredient, a surfactant, an infiltration aid and a natural organic aid, wherein the plant effective ingredient comprises a poison tobacco extractive, a solanaceae plant extractive and aconitine; the surfactant comprises one or two out of tween and span; the infiltration aid comprises laurocapram or fatty alcohol-polyoxyethylene ether; the natural organic aid comprises one or several out of plant essential oil, terpene and soya-bean oil. The plant source pesticide has strong activities of touching and killing, poisoning stomach, repelling and avoiding a variety of insect pests, and has excellent effect of preventing and treating a variety of insect pests; in addition, the pesticide is mainly prepared from some substances of the plants, and therefore, the pesticide is a good environment-friendly pesticide.

The invention discloses a greenhouse pesticide. The pesticide is characterized by comprising, by weight, 20-30 parts of monkshood, 20-30 parts of sabina vulgaris ant, 15-25 parts of schima root-bark, 15-25 parts of artemisia annua, 15-20 parts of veratrum nigrum, 20-30 parts of bamboo charcoal powder, 30-45 parts of ammonium nitrate, 15-20 parts of ammonia chloride, 5-10 parts of talc and 3-8 parts of surface active agent. The materials of the pesticide are sourced from plants, and have little toxic content and no residue. All the materials compensate each other with their own advantages to create a synergistic effect. The pest killing effect is obvious.

The invention relates to sugarcane insecticide granula containing clothianidin. The sugarcane insecticide granula is composed of clothianidin, amino-oligosaccharin, an assistant and an excipient. A weight ratio of clothianidin to amino-oligosaccharin is 10:1-1:1. Compared with conventional sugarcane insecticide granula, the sugarcane insecticide granula combines amino-oligosaccharin and clothianidin, has an obvious synergistic effect, strong touch out and intake and transmission effects, and a good sugarcane borer control effect, can induce a crop to generate resistance, improves crop insect resistance and disease resistance, promotes plant growth, and has low cost for per mu investment and long lasting period.

A circuit board is fixed to a housing including a boss-like fixing part by being fastened by a fixing tool. The circuit board includes a printed portion formed in a region that the circuit board contacts with the housing. The printed portion includes a lattice printed portion formed by silk screening on a periphery of a fixing hole through which the fixing tool is inserted, and a ring printed portion formed by silk screening on a periphery of the lattice printed portion. The lattice printed portion includes a non-printed region, and the ring printed portion includes no non-printed region.