36results about How to "Safety achieved" patented technology

A water-erosion-proof plugging agent and a preparation method and application thereof are disclosed, 35-40 parts by weight of water glass powder are added to 140-160 parts by weight of water, and stirred to hydrate to obtain a first water solution; 30-65 parts by weight of G-grade cement, 0.5-1 part by weight of sodium hydroxide and 0.1-0.5 part by weight of a cement reinforcing agent are mixed evenly to obtain a second mixture; 8-12 parts by weight of acrylate are added into 18-30 parts by weight of water, stirred and emulsified to obtain a third water solution; the second mixture is added into the first water solution, stirred evenly, then added into the third water solution, and mixed evenly to prepare the water-erosion-proof plugging agent. The water-erosion-proof plugging agent has good water-erosion-proof performance, and can block cracks of a water layer, at room temperature, initial setting time can be delayed by 25-60 minutes, the water-erosion-proof plugging agent can achive the effects of orthogonal instantaneous thickening and solidifying and sustainable increase of compressive strength, and the plugging effect of loss of large recurrent leakage is good.

The invention discloses a method and a device for recycling substrates by thermally cracking wasted printed circuit boards. Through the method and the device, combustion is avoided in a thermal cracking process and treatment safety is enhanced mainly by adding the introduction of water (vapor) in a reaction process and creating a completely-sealed low-pressure treatment environment; and by condensing and purifying organic gases to form reusable fuels or industrial chemicals, the treatment cost is reduced, recycling values are increased and a plurality of benefits, such as safe treatment devices and the like, can be created; therefore, the method and the device are of great industrial utilization value.

The invention relates to a ground guiding wire traveling crane. The ground guiding wire traveling crane comprises a base, a seat body which is arranged on the base and a guard rail which is matched with the seat body, wherein two sides of the base are respectively provided with a traveling device and a braking device; the traveling device and the braking device are respectively provided with a first traveling wheel and a second traveling wheel. The ground guiding wire traveling crane has the following beneficial effects that firstly, newly developed equipment capable of traveling on a ground guiding wire is adopted to maintain the ground guiding wire, and the ground guiding wire traveling crane is simple in structure, reliable to use and high in safety; secondly, the ground guiding wire traveling crane is provided with the traveling device for traveling driving and the braking device capable of braking in time at any time, so that the purposes of quick and stable traveling and safety are achieved, the traveling crane also can be braked at the same time, the operation is simple and reliable, and the work efficiency is improved; thirdly, the ground guiding wire traveling crane is provided with the guard rail, so that the personal safety reliability of maintenance personnel is improved, forward bending and falling are prevented, and the ground guiding wire traveling crane is also beneficial to force-borrowing operation of the maintenance personnel by abutting against the guard rail and is beneficial to reducing the working strength of the maintenance personnel.

A method for recovering base materials in classification by thermally cracking organic polymer mixtures and a device thereof; the device mainly comprises a reaction furnace, a reactant transmission fixing frame, a water-gas leading-in device, a reaction furnace waste gas outlet, a reaction furnace pressure control meter, a movable reaction frame, an automatic gas expansion device, a safe discharging device, a waste gas condensing and recovering device, a condensing compression tube, a condensing spraying device and a waste gas treating device, etc.; the method mainly uses molten inorganic salt to thermally crack organic polymers to separate base materials in the mixed high polymer materials easily, so as to classify easily, obtain the base materials with a large area (volume) and improve reuse capacity without breaking characters of the original base materials, moreover, the method can obtain the purposes of reducing energy and carbon consumption and preventing pollution, and providing a method for treating waste of organic polymers, a base materials classifying method and a device thereof.

The invention relates to the technical field of medicine, and discloses cefaclor composition particles and a preparation method thereof. The cefaclor composition particles disclosed by the invention are prepared from the following raw materials in parts by weight: 250 parts of cefaclor, 8 parts of bromhexine hydrochloride, 1,490 parts of sucrose, 20 parts of acesulfame, 2.5 parts of essence and 250 parts of sorbitol. The cefaclor composition particles disclosed by the invention comprise sorbitol which can be taken as a medicament dispersing agent for enhancing the medicament solubility and can be used for enhancing the antibacterial action of cefaclor. As proved by a test, the cefaclor composition particles disclosed by the invention have enhanced antibacterial action and high stability and can be widely applied to treatment of bacterial infection diseases such as respiratory tract infection, bone and joint infection, pelvic infection, abdominal infection and the like.

The invention relates to a method and a system for determining a working path based on radiation dosage of a nuclear island, belonging to the field of nuclear radiation monitoring. The method comprises the following steps of: field measuring a radiation value of the nuclear island and generating a three-dimensional radiation dosage zoning picture; defining a plurality of selective working paths of workers according to the three-dimensional radiation dosage zoning picture to obtain a plurality of three-dimensional working paths of the workers; calculating radiation dosage values corresponding to the various paths according to the plurality of three-dimensional working paths; and giving an optimal working path of the workers according to a worker radiation dosage management file and the radiation dosage values corresponding to the various paths obtained in the step 3. According to the method and the system disclosed by the invention, workers and paths can be determined rapidly and effectively so that the workers are protected safely; and the method has the advantages of high efficiency and direct viewing.

The invention provides a preservation method for stems of melons and fruits. The preservation method comprises the following steps: selecting the fresh melons and fruits without mechanical damages, plant diseases or insect pests, performing treatment on the stems of the melons and fruits by using a preservation solution, further airing, packaging, storing, transporting and the like, wherein the preservation solution contains 1-methylcyclopropene and thidiazuron, and 1-methylcyclopropene exists in the form of an inclusion compound of 1-methylcyclopropene. According to the method provided by the invention, a soaking or spraying way is adopted, the operation is simple, the method is suitable for sweet melons, watermelons, apples, pears, grapes and other varieties, the fresh color and luster and the plump state of the stems can be effectively kept, the quality of the melons and fruits is improved, and the storage period and the shelf life of the melons and fruits are prolonged.