377 results about "Chemical laboratory" patented technology

Methods and apparatus for storing and reviewing wound data are shown using a digital datasheet, or wound electronic medical record (WEMR). The WEMR is preferably presented via a single page containing all data that should be considered by a wound healing provider, as predetermined by protocol. This includes, but is not limited to, fields for: a digital photograph of the wound; a graph of the wound healing rate (length, width, depth and area over time); wound and other treatments including current systemic medications, along with a patient identifier and review/approval indicator. This may also include hematology and chemistry laboratory data; radiology and pathology images along with their associated reports; ambulation status and other history; and microbiology data including sensitivities. The WEMR is implemented via a wound database system, which includes templates and policies for rapid report generation and tools for protocol mapping. A particular WEMR page may be designed for electronic or paper review and approval by a treating physician, thus permitting comprehensive but efficient review of all relevant wound data, whether for a personal or remote consult, real-time or otherwise. When teaching or doing studies, patient identifier information can be masked while still enabling review of large but detailed data sets for a variety of wound and patient criteria.

The invention relates to a method for preparing luminescent carbon dots from carbohydrate. The carbohydrate based carbon dots prepared by the invention can be used for biological imaging and analysis to determine the content of metal ions. The method for preparing luminescent carbon dots from carbohydrate provided by the invention is as below: mixing carbohydrates with a modifier with amino at different molar ratios; reacting for a certain time by a hydrothermal method; filtering; regulating the pH to a neutral state, conducting dialysis and purification to remove excessive salt, so as to obtain the carbohydrate based luminescent carbon dots. The method for preparing the luminescent carbon dots provided by the invention uses carbohydrates as raw materials, which are easily available and have low cost; the obtained carbon dots have high quantum yield; and the equipment for the preparation process is simple,the method can be completed in general chemistry laboratory, and is easy for popularization.

The invention relates to a technical method for taking samples of semi-volatile organic compounds SVOC in a waste gas discharge pipe. The isokinetic sampling principle is adopted. A filter cylinder, a liquid collection bottle and an absorbent are used for collecting SVOC samples from the waste gas discharge pipe. The structure mainly consists of a sampling device and an isokinetic sampler mainframe; the sampling device comprises a pitot tube, a temperature sensor, a humidity sensor, the filter cylinder, a heating insulating device, a condensation device, the liquid collection bottle, an absorption tank, and an absorbent. When in sampling, the sampling device is inserted into the waste gas discharge pipe; a microprocessor in the isokinetic sampler tracks the discharge flow velocity of the sampling point; the purpose of isokinetic sampling can be achieved by maintaining the isokinetic sampling conditions; the SVOC samples in the form of particle in the waste gas discharge pipe are collected in the filter cylinder; the SVOC samples in the form of steam flow into the liquid collection bottle after being condensed; the SVOC samples in gas phase state are collected by the absorbent in the absorption tank; the rest gas after passing through the isokinetic sampler is discharged by an air extracting pump into the atmosphere; and after the sampling ends, samples collected in the filter cylinder, the liquid collection tank and the absorbent in the absorption tank are sent to a chemical laboratory for analysis.

The invention discloses an oil-soluble Mn-doped CsPb(Cl/Br)3 dual-emission nanocrystal and a preparation method thereof. The preparation method comprises the following steps: (1) synthesizing an all-inorganic CsPbBr3 perovskite nanocrystal precursor; and (2) carrying out halide-ion-exchange-assisted Mn-to-Pb ion exchange. The preparation method is carried out at room temperature, is simple in process and easy to operate, has the advantages of convenient raw material supply and low raw material price, can be completed in a common chemical laboratory, and thus, is easy to popularize. The Mn-doped CsPb(Cl/Br)3 nanocrystal has two emission peaks (perovskite intrinsic emission and Mn ion emission). The Mn-doped CsPb(Cl/Br)3 dual-emission nanocrystal obtained by the preparation method has high 56% fluorescence quantum yield, and can be used for manufacturing ratiometric temperature probes by utilizing the dual-peak-intensity temperature dependence characteristic.

An NIR analyzer with the optical probes across a pipe, or in a bypass configuration, after a stabilizer in an oil or condensate production plant. Prior to use, liquid samples from the plant are analyzed in a chemical lab to obtain reference vapor pressure or compositional values. A chemometric model using known techniques is then built with the captured absorption spectra and the reference lab results. Preprocessing methodologies can be used to help mitigate interferences of the fluid, instrument drift, and contaminate build up on the lenses in contact with the fluid. The chemometric model is implemented through the NIR analyzer as the calibration curve to predict the vapor pressure or other values of the flowing fluid in real time.

The invention discloses a BIM based laboratory engineering interactive design method and system. The BIM based laboratory engineering interactive design method comprises the specific steps of building engineering data models such as laboratory buildings and equipment by using BIM, and carrying out interactive design of the laboratory engineering by combining with a VR technology. The BIM based laboratory engineering interactive system is built at a cloud server; and through the interactive system, the scene of the laboratory engineering is subjected to three-dimensional visual display, and the work condition of the laboratory is subjected to simulated calculation and is output dynamically in a visual manner. Through the BIM based laboratory engineering interactive design method and system, planning and construction level of engineering such as biological, physical and chemical laboratories and clean workshops can be improved, and the engineering construction cost can be reduced.

The invention discloses a preparation method for a co-doped type and separately-coded type ZnInS/ZnS dual-emitter quantum dot. The preparation method comprises preparation of white-light emitting ZnInS:Ag/ZnS/ZnS:Mn/ZnS and ZnInS:Ag & Mn/ZnS/ZnS/ZnS nano materials, wherein by adopting a core-shell structure, the ZnInS:Ag/ZnS/ZnS:Mn/Zn nano material is synthesized by the following steps of: (1) preparing a color-adjustable ZnInS: Ag core; (2) carrying out core-covering on a first molar layer ZnS; and (3) adsorbing Mn ions and carrying out cover-covering on second and third molar layers; and for the preparation of the ZnInS:Ag & Mn/ZnS/ZnS/ZnS nano material, injecting time of a Mn precursor in the step (3) is advanced to injecting time of an S precursor in the step (1). The preparation method adopts a single-pot thermal injection process, is simple in process, easy to operate, capable of being completed in common chemical laboratories, and easy to popularize; and raw materials are convenient to supply, and are low in price.

The invention discloses a food safety risk supervision mobile laboratory. The mobile laboratory provided by the invention comprises an engineering truck, wherein at least one electric leg which can be contracted to the ground is arranged at the bottom of a coach of the engineering vehicle; and a food detection related instrument is arranged in the coach of the engineering truck. The laboratory combines the detection analysis function of the traditional biological and a chemical laboratory with mobility and convenience of large engineering trucks, can supervise food safety in real time, has the advantages of strong maneuverability, high-end equipment, complete detection items, greenness and environmental protection, self-sufficiency of water, electricity and gas and the like, and can deal with field test tasks of various national-grade large activities and food safety emergency incidents.

The invention discloses a composite film with photothermal conversion and heat energy storage/release functions and a preparation method thereof. The composite film is prepared by carrying out self-assembly on a main body material polyvinyl alcohol by using a trace amount of gold nanoparticles as a photothermal conversion material and adding an organic phase-change material. According to the composite film with photothermal conversion and heat energy storage/release functions, by utilizing the surface plasma resonance effect of the filled nano gold and the heat storage/heat release characteristics of the phase-change material, the composite phase-change film has the functions of photothermal conversion and heat energy storage/release, and effectively solves the problem of leakage in the organic phase-change material. The preparation method is simple to operate and accessible in raw materials, can be prepared in common chemical laboratories, and thus, can be easily popularized.

The invention discloses intelligent energy-saving graphene oxide composite paper and a preparation method thereof, wherein the intelligent energy-saving graphene oxide composite paper is obtained by layer-by-layer self-assembly of graphene oxide and an organic phase change material; the addition amount of the organic phase change material is 1-85% of the mass of the intelligent energy-saving graphene oxide composite paper; and the rest is graphene oxide. The graphene oxide composite paper provided in the invention can prevent the organic phase change material from leakage effectively and improve heat conductivity; and the method is simple in operation and low in cost, can be finished in a common chemical laboratory, and is easy to popularize. The intelligent energy-saving graphene oxide composite paper prepared by the method has strong flexibility and variable phase change temperature and meets different application requirements, such as thermal interface materials of electronic devices, etc., and the material has a wide application prospect.

The invention relates to a preparation method of tetra-palladium complexes in a crossed structure which synthesize tetrapyridylporphine bridge by using supramolecular self-assembly. The tetra-palladium complexes are possibly used for treating human cancers. The MTT experiment data indicates that the compounds have high antitumor activity. A single-teeth platinum ligand, of which the chloride ion is substituted by nitrate, and a bridging ligand tetrapyridylporphine are subjected to self-assembly, thereby obtaining new potential anticancer drugs with excellent anticancer activity and tumor targeting property. The complexes have excellent tumor cell targeting property, and induce the G-rich sequence of the cancer gene to form a G-quadruplex structure, thereby inhibiting the activity of the telomere enzyme and further having high antitumor activity. In addition, since the preparation method is simple and easy to implement, has lower cost, and can be complemented in a common chemical laboratory, and does not have environment pollution in the production process. Therefore, the tetrapyridylporphine bridged tetra-palladium complexes in a crossed structure can be used as novel potential antineoplastic drugs.

The invention discloses a coating thickness test method. According to the method, a sample to be tested is made into a sample block of which the coating area can be accurately calculated; a coating onthe sample block is completely digested with strong acid, so that a test solution of a certain volume can be prepared; the content of a coating metal component in the solution is measured by an inductively coupled plasma optical emission spectrometer; the mass of the coating component is calculated; and the thickness of the coating is calculated on the basis of the measured area of the sample block. The test method of the invention has the advantages of high test accuracy, strong representativeness, less interference, small error, and wide test coating thicknesses range. With the coating thickness test method adopted, the thickness of the coating can be tested in general chemical laboratories, and professional thickness gauges are not required.

The invention relates to a chemical laboratory waste gas treating method and a chemical laboratory waste gas treating device. The method comprises the steps of removing dust of waste gas generated in a chemical laboratory through sponge, guiding the waste gas into a primary alkaline countercurrent tower through a fan via a ventilation cabinet, removing a great amount of acid gas, soluble alkaline and neutral waste gas, further absorbing the waste gas which cannot be absorbed in the primary alkaline countercurrent tower by virtue of a secondary alkaline countercurrent tower, exhausting the surplus gas into a high-efficiency activated carbon adsorption tower through a centrifugal fan, and adsorbing the surplus waste gas which is difficult to treat by virtue of the high-efficiency activated carbon; detecting the remaining gas after being adsorbed by activated carbon, discharging the gas if the gas is qualified by detection, pumping the gas to the primary alkaline countercurrent absorption tower by adopting a circulating air pump if the gas is unqualified by the detection so as to enable the gas to be circularly treated, and discharging the gas until the gas reaches the standard by the detection. By adopting the method and the device, the discharging of the pollution gas without exceeding the standard can be realized.

The invention discloses a photo-thermal conversion composite film and a preparation method thereof, wherein the composite film is prepared by the steps of taking a cellulose film as a substrate, taking a semiconductor nano material with near-infrared absorption as a photo-thermal conversion material, and growing the photo-thermal conversion material on the surface of the cellulose film in situ through a solvothermal method. The solar photo-thermal conversion composite film has a rough porous surface, high absorption of incident light can be achieved through multiple scattering, meanwhile, semiconductor photo-thermal conversion nanoparticles are evenly dispersed on the surface of the cellulose film, and large-scale agglomeration is avoided; compared with a semiconductor block material, thephoto-thermal conversion composite film has efficient solar photo-thermal conversion performance. The used cellulose substrate film is wide in source, and the cost of the photo-thermal conversion nanoparticles is moderate; the preparation method of the composite film is simple, and the composite film can be prepared in general chemical laboratories and is easy to popularize; and the solar photo-thermal conversion composite film prepared through the method has wide application prospects in seawater desalination, sterilization and other aspects.

The invention discloses a pediatric negative pressure gastric lavage device for a pediatrician, and relates to the field of medical instruments. The gastric lavage device comprises a medicine supply box, a stirring box and a motor. The output end of the motor is connected with a stirring shaft, multiple sets of stirring paddles are evenly arranged on the stirring shaft, a liquid sucking pump is arranged in the medicine supply box, the input end of the liquid sucking pump is communicated with a discharge pipe and a feed pipe through tee joints respectively, the discharge pipe is communicated with the lower end of the stirring box, the output end of the liquid sucking pump is communicated with a gastric lavage pipe, an airbag is arranged at the end, away from the liquid sucking pump, of thegastric lavage pipe, the airbag is communicated with an inflating pipe, the other end of the inflating pipe is communicated with an inflating mechanism, and multiple sets of brushes are evenly arranged on the airbag. In order to solve the problems that most gastric lavage devices cannot configure gastric lavage liquid medicine or sample and collect gastric juice reactants in real time according tothe conditions of patients, the gastric lavage liquid medicine is configured in real time according to the conditions of the patients through the stirring box, the gastric juice reactants of the child patients are sampled and collected in real time through the feed pipe for chemical laboratory analysis, and the device has broad application prospects.

The invention relates to a chemical laboratory water-saving device capable of recycling thermal pollution waste water, which belongs to water collecting and distributing field. In foundation teaching experiment process of chemical department of colleges and universities, water resource waste problem is existed, and the invention aims to solves the problem. The device comprises a water distributing pipe, a water collecting pipe, a horizontal flowing cooling tower, and a water pump, wherein a water outlet of the horizontal flowing cooling tower is communicated with a water inlet of the water pump, a water outlet of the water pump is communicated with the water distributing pipe, a water outlet of the horizontal flowing cooling tower is communicated with the water collecting pipe, and the water collecting pipe and the water distributing pipe are both cannular and are both equipped with a plurality of taps. The invention breaks through the habitual thinking and working method that tap water is directly used as cooling water and is abandoned after once flowing a device in foundation teaching laboratory of chemical department of colleges and universities, and is helpful for solving water resource waste problem.

The invention discloses a paper sensor for rapid on-site detection of fluorine ions in water and a preparation method thereof, and is characterized in that the paper sensor is a membrane based sensor with a filter membrane as a substrate, wherein the filter membrane is printed with uniformly distributed fluorescent nanoprobes; the fluorescent nanoprobes are prepared by making luminous graphene oxide and silver nanoparticles specifically combined in a manner of borate bonds through surface functionalization modification according to the effect of resonance energy transfer, so as to form the fluorescent nanoprobes; F<-> can destroy the specific combination of the borate bonds, so that silver nanoparticles are away from luminous graphene oxide, the probe system fluorescence is recovered, and thus F<-> is detected. The paper sensor aims at the deficiency of the prior art, can achieve rapid on-site visual detection of the fluorine ions in an environmental water body; the preparation method has the advantages of simple operation and low cost, can be completed in general chemistry laboratories, is easy to popularize, and has broad application prospects in environmental detection and protection and many other fields.

The invention relates to a chemical lab water saving device based on the principle of evaporation and heat radiation, belonging to the field of water collection and distribution. The invention aims at solving the problem of cooling water waste during basic teaching experiments in chemistry institutes and departments of colleges and universities. The device comprises a water distribution pipe, a water collection pipe, a cross-flow cooling tower, a water pump, an exhaust duct and a ventilating fan; the water outlet of the cross-flow cooling tower is communicated with the water inlet of the water pump; the water outlet of the water pump is communicated with the water distribution pipe; the water inlet of the cross-flow cooling tower is communicated with the water collection pipe; both water collection pipe and the water distribution pipe are provided with a plurality of taps; and one end of the exhaust duct is communicated with the exhaust port of the cross-flow cooling tower, and the other end of the exhaust duct is communicated with the air inlet of the ventilating fan. The device is beneficial to solving the problem of water waste.

The invention provides a descaling method for a long-distance high-concentration iron ore slurry conveying pipeline, and belongs to the field of metallurgical pipeline dredging. The descaling method comprises the steps that (1) the scaling status inside the pipeline is checked, and sampling is conducted for chemical laboratory analysis; (2) opening cutting inspection is conducted on the pipe section, 11.5 km away from a main pump station, of the pipeline, according to the scaling layer status, the total scaling amount is estimated, and the equivalent diameter of the pipeline is calculated; the main compositions of scale are analyzed, and the one-time descaling amount is determined; (3) a first pipe cleaner is selected for cleaning up the pipeline according to parameters obtained in the (1) step and the (2) step; a pipe cleaner sending device matched with the first pipe cleaner is used for sending the pipe cleaner into the pipeline, the pipe cleaner is sent from a pipeline inlet to a pipeline outlet and is received by a pipe cleaner receiving device, and meanwhile it is guaranteed that the pipe cleaner is not plugged in the pipeline inlet or the pipeline outlet; (4) more pipe cleaners are sequentially used for cleaning up the pipeline. The descaling method has the advantages that that production is not affected by the pipeline cleaning process, the pipeline is not damaged, the technology is safe and environmentally friendly, and operation is easy.

The invention belongs to the fields of nanometer materials and biomedical analysis chemistry, and particularly relates to a one-step method for synthesizing DNA functionalized Zn doped CdTe quantum dots. The quantum dot probe is prepared by connecting phosphorylated DNA to surface of quantum dot by coordination of sulfur and cadmium, and quantum dot surface can be connected with 1-2 DNA fragments. The preparation method is as below: in a synthesis process of quantum dots, phosphorylated DNA is added to obtain the DNA functionalized quantum dot probe through a one-step reaction. The probe can be used as a bifunctional nanometer material, has high fluorescence quantum yield, good biocompatibility and good dispersion, and can be used for detection of DNA fragment and protein, cell identification and tumor targeting. Compared with a traditional DNA marked quantum dot method, the preparation method provided by the invention is simple and low-cost, does not require expensive preparation facilities, can be accomplished in general chemistry laboratory, and can be widely used in fields of biological detection, cellular imaging, target tracing and disease diagnosis, etc.

The invention relates to a full automatic extraction device, which is used for extraction experiment in a chemical laboratory. The device comprises a shell, a getter device, an extraction container and a tap funnel which are fixedly arranged on the shell, wherein the tap funnel is positioned on the upper part of the extraction container; the extraction container is communicated with the getter device through an air duct and connected positions are all closed; the bottom end of the extraction container is provided with an imbibition long tube; the imbibition long tube passes through an opening on the top part of the tap funnel to the bottom of the tap funnel; the bottom of the tap funnel is provided with a drain pipe; the drain pipe is provided with a control valve; and the getter device is arranged in the shell, an outlet of the getter device is connected with a vent pipe, and the vent pipe extends outside the shell. The device adopts batch type vacuumizing principle, guides organic phase and aqueous phase to come and go rapidly in the extraction container and the tap funnel so as to make a target compound sufficiently transfer from the aqueous phase to the organic phase, thereby realizing liquid-liquid extraction and separation. The device can replace manual operation and save time and labor, and has good uniformity, an experimenter cannot breathe harmful gas, so the device is favorable for protecting human body from harm.

The invention provides a preparation method of a carbon-coated lithium iron phosphate material with mesoporous carbon CMK-3 as a carbon source. The preparation method comprises the steps of mixing iron nitrate, ammonium dihydrogen phosphate and citric acid in a certain ratio to form a mixture, slowly dropwise adding a lithium acetate solution to the mixture under the action of stirring to form a mixed material, dipping mesoporous carbon CMK-3 into the solution at a certain temperature, carrying out stirring and ultrasonic treatment to obtain a slurry-shaped solution, drying the obtained slurry-shaped material at a constant temperature, grinding the dried slurry-shaped material and calcining the powder, thus obtaining the carbon-coated lithium iron phosphate powder material. The carbon-coated lithium iron phosphate material prepared by the preparation method has a grain size of 200-400nm, fine and uniform grains and high purity, thus increasing the electron conductivity and the ion diffusion rate. The preparation method is simple and practicable and fast, is pollution-free in preparation processes, can be completed in ordinary chemical laboratories, and can be used for large-scale industrial production. The carbon-coated lithium iron phosphate material prepared by the preparation method can serve as an anode material for lithium ion cells.

The invention relates to a preparation method of an organic hybrid trinuclear platinum complex possessing a Y type structure synthesized by supermolecules self-assembly as well as treatment for gastric adenocarcinoma cells. The MTT experiment data shows that the compound can cross a drug resistance mechanism of cisplatin, and can specifically target to the gastric adenocarcinoma cells. A platinum ligand Pt(NH3)2Cl(NO3)] in which the chloride ion is replaced by nitrate and a bridge ligand (2,4,6-tri(pyridin-4-yl)-1,3,5-triazine) are subjected to self-assembly, thereby the novel and latent medicine for treating gastric adenocarcinoma with excellent anticancer activity and tumor targeting is obtained. Because the complex enables specific recognition of the gastric adenocarcinoma cells, and can induce the G-rich sequence of the oncogene to form a G-quadruplex structure, the activity of telomerase can be inhibited, thereby the complex possesses high gastric adenocarcinoma resistance activity. The preparation method has the advantages of simple process and low cost, can be completed in a general chemical laboratory, and the production process is environmentally-friendly. The trinuclear platinum complex possessing Y type structure can be taken as the novel and latent gastric adenocarcinoma resistance medicine.

The invention relates to a water-saving device in a chemistry lab combining a ventilation mechanism in a lab, belonging to the field of water collection and distribution. The invention aims at solvingthe problem of waste of the water resource for cooling in the experiment process of basic teaching for the department of chemistry in colleges and universities. The water-saving device comprises a distributing pipe, a collecting pipe, a cross flow cooling tower, a water pump and a ventilation kitchen. A water outlet port of the cross flow cooling tower is communicated with a water inlet port of the water pump; the water outlet port of the water pump is communicated with the distributing pipe; the water inlet port of the cross flow cooling tower is communicated with the collecting pipe; both the collecting pipe and the distributing pipe are provided with a plurality of taps; and the side wall of the ventilation kitchen is provided with a branch air port which is communicated with an air vent of the cross flow cooling tower. The scheme breaks through the usual thought and behavior that the tap water is directly used as cooling water and is waste after flowing through the device in the experiment process of basic teaching for the department of chemistry in colleges and universities. The device is beneficial to solving the problem of water resource waste.