44 results about "Performing Laboratory" patented technology

A core sample holder assembly for performing laboratory core flooding experiments with a core sample:

• • a pressure chamber provided by a tubular hull made of a carbon fiber composite material and an aluminum liner, and a pair of disk-shaped flanges;
  • a flexible core sample holder sleeve within the pressure chamber, which sleeve comprises a tubular steel sheet with a plastic inner lining;
  • an opening for injecting oil into an annular space between the hull and the sleeve;
  • pressure control means for maintaining the oil at a predetermined pressure;
  • an fluid injection port for injecting a fluid into a cylindrical core sample within the sleeve;
  • a fluid outlet port arranged in the other flange for discharge of fluid from the core sample; and
  • means for monitoring the migration of injected and/or pore fluid through the pores of the core sample.

The present invention is a pocket-sized, portable computing apparatus that performs frequently used laboratory calculations, provides a look-up function for commonly used data and procedures, and provides note-taking and data capture for record-keeping. The present invention displays data in a form that a chemist finds most convenient and manipulates this data with functions a chemist typically utilizes in his work. In addition, the present invention provides a user interface that is compatible with traditional methods for formula manipulations and chemistry workflows and that increases the efficiency of the user in performing laboratory tasks.

The invention provides a multi-source information fusion technique based coal-fired boiler SCR catalyst life evaluation method. The multi-source information fusion technique based coal-fired boiler SCR catalyst life evaluation method includes the following steps: performing multiple sampling on a catalyst used in a power station boiler, performing laboratory detection on a sample, and acquiring a microscopic feature index capable of representing the activity of the catalyst; acquiring a macro-performance index of the catalyst sample through a micro reactor test; counting and mining power station historical operation data to acquire a macro index capable of reflecting the power station SCR reactor performance; and fusing the indexes associated with the catalyst life, and completing comprehensive evaluation of the catalyst life. The evaluation method can acquire a catalyst life prediction model according to historical laboratory detection data and an actual operation parameter of the catalyst through a fuzzy mathematical method, and can improve the accuracy and stability of catalyst performance evaluation.

The present invention relates to an enhanced extracting and sampling device for collecting faeces samples, particularly suitable for performing laboratory diagnostic tests in a total laboratory automation, in particular for dosing one or more analytes, and allowing the screening of markers of diagnostic interest for purposes of prevention and treatment.

Such a device for sampling faeces may indeed be received and processed by robotic systems in highly automated analysis laboratories as the samples of body fluids (whole blood, plasma, serum, etc.) are processed.

Methods for constructing multivariate predictive models for diagnosing diseases for which test methods are individually inadequate, including: (a) performing laboratory tests on a statistically significant test population of individuals; (b) generating a score function from a linear combination of test panel results;

• • (c) performing a receiver operating characteristic (ROC) regression or alternative regression technique of the score function using those tests and β coefficients calculated simultaneously to maximize the area under the curve (AUC) of the function and chosen simultaneously to generate the largest area below that portion of the ROC curve for the (1−t₀) quantile of individuals without disease, where t₀ represents the maximum acceptable false-positive rate; (d) calculating individual pre-test disease odds; generating a diagnostic likelihood ratio of disease by determining the frequency of each individual's test score in the diseased population relative to the control population; and multiplying pre-test odds by the likelihood ratio to determine individual post-test disease odds; (e) converting a set of posttest odds into posttest probabilities for each potential multivariate methodology and creating an ROC curve for each methodology by altering posttest probability cutoff values; (f) comparing partial ROC areas generated by one or more regression techniques to determine the optimal methodology; and (g) dichotomizing the optimal methodology by finding that point on the ROC curve tangent to a line with slope (1−p) C/p·B, where p is population prevalence of disease, B is regret associated with failing to treat patients with disease and C is regret associated with treating a patient without disease.

The invention belongs to the technical field of detection and in particular relates to a method for positioning a discharging fault in a gas insulated switchgear (GIS). The method comprises the following steps of: sampling, performing field detection and performing laboratory detection, wherein the step of performing laboratory detection comprises the sub-steps of gas sampling, component detection, performing chromatographic column separation and detection of a detector on samples, recording the peak area or peak height of different components, calculating concentration of each component, and positioning the discharging fault in GIS according to sulfur hexafluoride (SF6) gas components in the GIS and the calculated concentration of each component. According to the method, an SF6 decomposer in the GIS is detected, and internal conditions of GIS equipment are judged, so that the GIS is subjected to fault gas chamber positioning, a latent fault in the equipment is subjected to tracking monitoring, the detection range is narrowed, the detection time is shortened, and a novel detection means is provided for fault diagnosis of the GIS equipment.

The invention relates to a salt mist corrosion test box. The test box comprises a heating pipe, a spray system, an electrical system, a control panel, a measuring cylinder and a drainage pipeline, wherein the heating pipe is arranged at the bottom of the test box; the spray system is arranged at the upper part of the test box; the electrical system is arranged on the side wall in the test box; the control panel is arranged on the right side of the front of the test box; the measuring cylinder is arranged at the middle part of the front of the test box; and the drainage pipeline is arranged on the back of the test box. Compared with the prior art, the test box which is made of polyvinyl chloride (PVC) reinforced hard plastic boards has finished surface, ageing resistance, corrosion resistance and shock resistance, is easy to clean and has no leakage; intermittent or continuous spray mode is used; and the test box performs laboratory simulation test on natural corrosion, copies an outdoor periodical environment, is simple for operation and has low expense.

Systems and methods for ordering laboratory tests, performing laboratory tests, and providing results thereof are provided. Laboratory tests may be ordered, performed, and the results of the tests provided to a subject without a subject being required to provide information relating to his or her identity.

The invention relates to an ultraviolet quantitative determination method for concentration of electrolyte of a positive electrode of a vanadium battery and application thereof. The method comprises the following steps of: confirming characteristic absorption peak of acid solution of V (IV) vanadium compound and drawing a standard curve by performing full spectrum scanning on the acid solution ofthe V (IV) vanadium compound to determine concentration of V (IV) in the electrolyte of the positive electrode of the vanadium battery; then adding an excessive amount of reducer into the acid solution of the V (V) vanadium compound and performing full spectrum scanning on a reaction product to confirm the characteristic absorption peak of the acid solution of the V (IV) vanadium compound and draw a standard curve so as to determine total vanadium concentration in the electrolyte of the positive electrode of the vanadium battery; and deducting the concentration of the V (IV) to obtain the V (V) concentration, wherein the reducer can be used for reducing all V (V) into V (IV), but does not contain other valence states; and the remaining reducer can be used for completely complexing or not complexing a reduction product V (IV). The method has an accurate determination result and a simple and convenient operation process, and can be used for determining the concentration of the electrolyte of the positive electrode of the vanadium battery and performing laboratory and industrial analysis and quality control on related products containing V (V) or V (IV) vanadium ions.

The invention discloses an integrated safe lumbar puncture device used clinically. The integrated safe lumbar puncture device is mainly applied to the conditions that cerebrospinal fluid puncture needs to be conducted in the clinical diagnosis and treatment process, for example, the cerebrospinal fluid pressure test is conducted during lumbar puncture as well as a cerebrospinal fluid sample is remained to perform laboratory examination. The integrated safe lumbar puncture device is characterized in that the traditional lumbar puncture needle can be replaced; the cerebrospinal fluid pressure test can be realized in the same device; the cerebrospinal fluid sample is remained according to the requirement and intrathecal injection is conducted; cerebral hernia caused by high cranial pressure excessive drainage in the lumbar puncture process can be avoided; the operation processes of sample retention, pressure test and intrathecal injection can be completed in the same device; the operationflow is simplified; puncture complications are avoided; and the safety of patients and operators is guaranteed.

The invention relates to the technical field of polluted soil restoration and particularly relates to an in-situ chemical restoration method for soil. Currently, aiming at the pollution of farmland soil, measurements such as burning and solidifying are mainly adopted abroad. According to the in-situ chemical restoration method, chlorine dioxide is used for decomposing organic pollutants. The method comprises the following steps: (1) calculating the volume of pollution according to the area and depth of a polluted region and measuring the varieties and contents of pollutants; (2) sampling the polluted soil and performing laboratory experiments to determine the consumption amount of chlorine dioxide per polluted soil unit; (3) enabling the amount of chlorine dioxide to deliver to be equal to the consumption amount of chlorine dioxide of X units of polluted oil of polluted volume; (4) preparing a mother solution with chlorine dioxide powder; (5) uniformly mixing the mother solution and irrigating water and irrigating the polluted farmland, wherein the concentration of the mixture is 60-80mg/L and the concentration of treated polluted water body is 1.6-1.8mg/L. The in-situ chemical restoration method is easy to operate, low in construction cost, labor-saving and time-saving and does not affect the soil fertility.

A pocket-sized, portable computing apparatus that performs frequently used laboratory calculations, provides a look-up function for commonly used data and procedures, and provides note-taking and data capture for record-keeping. The present invention displays data in a form that a chemist finds most convenient and manipulates this data with functions a chemist typically utilizes in his work. In addition, the present invention provides a user interface that is compatible with traditional methods for formula manipulations and chemistry workflows and that increases the efficiency of the user in performing laboratory tasks.

The invention discloses a hybrid reliability testing method for marine mechanical and electrical products. The hybrid reliability testing method for the marine mechanical and electrical products combines laboratory simulation test with use test, some products are used for shipment, the total reliability of service data meets a specified requirement, some products perform laboratory simulation test, the test data of the products are converted and synthesized according to equivalent coefficients to obtain the final test data, the expensive cost for the laboratory for simulating complex stress conditions is lowered, the stress condition of the actual use state can be really reflected, the test reliability is guaranteed, the test period is obviously shortened, the time cost is saved, the manpower, material resource and financial resource consumption is reduced, and the test benefit is obviously improved; the hybrid reliability testing method for the marine mechanical and electrical products is especially suitable for the marine mechanical and electrical products difficult to perform conventional reliability simulation test and products which are used for ships without performing reliability test.

The invention relates to a field hardness detection result comparison test method and aims to overcome a problem that a portable Leeb hardness tester and a portable Brinell hardness tester cannot satisfy the hardness detection requirement in high-effective production period. The test method includes: S1) selecting a test environment; S2) selecting test equipment; S3) selecting test object; S4) preparing a test piece of simulation field; S5) performing hardness test of the simulation field; S6) preparing a laboratory test piece; S7) performing laboratory hardness test; S8) determining the fieldhardness detection effect. In the method, on the basis of a large number of tubes and test points on a heating surface of a boiler in a power plant, the field condition of the test object is simulated under the laboratory environment, so that the hardness property of the test object is evaluated actually. The method satisfies detection requirement in high-effective production, is free of influence on production period, and effectively avoids the problem of technical dispute due to the hardness.

A kit and DNA probe for detecting potato viroid and a preparation method of probe sequence (1) relate to a kit for detecting viroid, a DNA probe for detection and a preparation method of probe sequence. The invention solves the defects that the existing potato viroid detection technology has low detection sensitivity and complicated operation and needs the professional to perform laboratory tests, and also solves the defect that the existing DNA probe used for detecting the potato viroid can cause low detection sensitivity. The kit of the invention comprises a solution I, a solution VI, a solution VII, a solution VIII, a solution IX, a solution XI, a solution XII, a solution XIII and a solution XIV. The DNA probe of the invention is a double probe. The kit of the invention has high sensitivity and easy operation, and the sensitivity of the DNA probe of the invention is 500 times of the sensitivity of the current simple probe.

The invention discloses an integrated safety lumbar puncture outfit. The integrated safety lumbar puncture outfit is formed by a puncture unit, a cerebrospinal fluid circulating unit, a safety protection unit, and a machine housing. The integrated safety lumbar puncture outfit is mainly applied to needed conditions that a cerebrospinal fluid pressure test which needs to perform lumbar puncture isperformed in clinic diagnosis and treatment processes, a cerebrospinal fluid sample is reserved to perform laboratory examination, and intrathecal injection is performed through subarachnoid space andthe like. Compared with a traditional lumbar puncture needle, the integrated safety lumbar puncture outfit is capable of realizing the cerebrospinal fluid pressure test and the intrathecal injectionin the same device, reserving the cerebrospinal fluid sample according to the need, and controlling a release speed of cerebrospinal fluid, thereby avoiding a cerebral hernia risk caused by uncontrollable rapid cerebrospinal fluid release in a lumbar puncture process, protecting life safety of a lumbar puncture patient, and simpler and more healthful in operation.

The invention discloses a method for estimating porosity of granite surrounding rock after high temperature based on longitudinal wave velocity. The method comprises the following steps: firstly, establishing a relationship between porosity and elastic wave longitudinal wave velocity based on a Boltzmann function, then selecting representative test points to manufacture a granite sample, performing laboratory test, testing elastic wave longitudinal wave velocity and porosity, finally, testing elastic wave longitudinal wave velocity of the granite surrounding rock on site, substituting the velocity into the relational expression of the granite surrounding rock porosity and the longitudinal wave velocity, and estimating porosity of the surrounding rock. The method establishes a relation formula of granite surrounding rock porosity and the elastic wave longitudinal wave velocity based on the Boltzmann function, and a method for estimating the surrounding rock porosity by testing the granite surrounding rock elastic wave longitudinal wave velocity is created; and in actual engineering, the process of carrying out the surrounding rock porosity laboratory test is shortened, and the timeof the surrounding rock porosity test is greatly saved.

The invention discloses a production technology of microorganism composite microbial inoculum, and relates to the technical field of microorganism compounding agents. The production technology comprises the following steps of S001, identifying strains for production, and purifying or rejuvenating strains having functional changes or polluted by infectious microbes; and S002, before mass productionof the strains, performing laboratory pre-production test on the strains, determining appropriate growth temperature and growth PH of the strains and appropriate components and proportion of fermentation culture mediums, determining appropriate culture time of the strains, and drawing a growth curve of the strains. According to the production technology, the strains are subjected to identification and growing environment test before production, then bevel activation and strain culture are performed to obtain seed liquid and shake flask strains respectively, and finally, through fermentation with a seed jar and fermentation with a fermenter, the microorganism composite microbial inoculum is prepared. The microorganism composite microbial inoculum is simple in preparation process and low inpreparation cost, the quality of the microorganism composite microbial inoculum is improved, and the meat quality of livestock is effectively guaranteed.

The invention discloses an improved DY-IV medium suitable for the growth of Dinobryon. The main components of the modified DY-IV medium of Dinobryon include CaCl2.2H2O, MgSO4.7H2O, Na2HPO4, NaNO3, NaSiO3.9H2O, NH4Cl, KCl, MES buffer, a metal solution, a vitamin solution and distilled water. The medium can be used to perform laboratory artificial culture on fresh Dinobryon collected in the field. The problem that subsequent life history observation and molecular systematic analysis cannot be performed due to the previous Dinobryon study is only limited to fixed study of the collection in the field and the addition of a Lugol's iodine solution and the Dinobryon cannot be artificially cultured is solved in the invention.

The invention provides a method for extracting active ingredients in threonine fermentation concentrate. Waste can be turned into treasure through the method. The method comprises the key points of: adding an extractant ethanol at a mass ratio of 10-150% into the threonine fermentation concentrate, wherein the purity of the extractant ethanol is analytical pure; performing stirring at a medium speed for 5-30 min so as to achieve thorough mixing of the concentrate with the extractant, and putting the mixture in a thermostatic water bath at 20-50 DEG C, wherein the placing extraction time is 0.5-8 h; performing laboratory suction filtration with 200 mesh polyester filter cloth as a filter medium, retaining a filter cake, and drying the filter cake. The method has the advantages that: the waste can be turned into treasure, produced inorganic salts are subjected to a recrystallization process so as to obtain ammonium sulfate of a certain mass, and the obtained ammonium sulfate can be soldon the market; after extract liquid is subjected to simple distillation treatment, the extractant can be recovered greatly, the remaining organic matter which contains water can be used after drying is conducted, and on the other hand, emission of harmful matter can be reduced so as to protect the environment.