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114 results about "Fasting tests" patented technology

Metabolic profiles often require fasting, according to Adams Memorial Hospital. Other fasting blood tests include glucose testing, the renal function panel, and the lipid profile. When fasting for these tests, patients are not to eat or drink during the 12 hours before the test.

Method for measuring carboxymethylcellulose enzyme activity

The invention discloses a determination method for the activity of carboxymethyl cellulose. Acidic or neutral cellulose enzyme solution to be tested is firstly prepared: liquid enzyme is diluted by acidic or neutral buffer solution; the enzyme solution to be tested is added in a reaction tube, is added into sodium carboxymethylcellulose solution substrate with equivalent volume, DNS (3, 5-dinitrosalicylic acid) reagent with three times volume being enzymatic blank control, and is mixed evenly and reacts under the temperature of 50 DEG C; next all the reaction tubes are taken out, the DNS (3, 5- dinitrosalicylic acid) reagent with three times volume is added into the sample tube, sodium carboxymethylcellulose solution substrate with equivalent volume is added in a control tube; then all the reaction tubes are heated by water bath for 5 minutes and taken out to be cooled to the room temperature, and the reaction is ceased; finally, the reacted solution is taken to carry out the colorimetric determination of the absorbance value under the wavelength of 540nm, and the reducing sugar content is calculated according to the glucose standard curve. Compared with the prior art, the determination method has small variation coefficient of many tests for a same sample, good reproducibility of test results and fast test speed, and is suitable for determining numerous samples simultaneously.
Owner:DONGGUAN BAOLIMEI CHEM

Fast test device capable of simultaneously measuring air passage eddy and tumble of gasoline engine

The invention discloses a fast test device capable of simultaneously measuring air passage eddy and tumble of a gasoline engine. The fast test device comprises three parts, namely a roller way lifting assembly, an airflow guiding assembly and a blade-type anemograph assembly. Two connecting plates below a working table board are used for fixing two synchronous motors; two worm shaft brackets are used for supporting worm shafts; the two synchronous motors drive the worm shafts, as well as worms and gears to rotate so as to realize decelerated motion; a roller way is used for placing a to-be-measured cylinder cover; two worm wheels are welded on corresponding cam shafts respectively; the roller way is erected through rotation of a cam to enable the cylinder cover to move vertically on the working table; and air passage flow parameters are measured through the blade-type anemograph, a relevant sensor and the like. The fast test device omits the operation of carrying the cylinder cover manually, dispenses with redesign of a clamping and positioning mechanism of an original air passage test stand, has the characteristics of convenient mounting and dismantling, can test the air passage of engines with more than four cylinders, and can remarkably improve the detection speed of each cylinder cover.
Owner:TIANJIN UNIV

Method for fast testing contents of chemical ingredients in Eucalyptus urophylla*E. tereticornis wood

The invention discloses a method for fast testing the contents of chemical ingredients in Eucalyptus urophylla*E. tereticornis wood. According to the method, a mathematical model is built by using the existing near infrared spectral feature absorption peak of an Eucalyptus urophylla*E. tereticornis wood sample and the relationship between contents of each chemical ingredient, and the goal of fast testing the content of other wood chemical ingredients to be tested in Eucalyptus urophylla*E. tereticornis wood is achieved. The method comprises the following steps of (1) sample sampling; (2) sample crushing and near infrared spectrum collection; (3) sample wood chemical ingredient standard measurement; (4) spectrum treatment and modeling; (5) model inspection; (6) model application. The method for fast testing the contents of ingredients of cellulose, hemicelluloses and lignin of the Eucalyptus urophylla*E. tereticornis wood has the advantages that the implementation is simple, convenient and fast; the accuracy and the reliability are high; the test cost can be obviously reduced; the tree damage and the chemical medicine consumption are reduced, so that the goal of testing the contents of the chemical ingredients in a great amount of Eucalyptus urophylla*E. tereticornis wood can be achieved.
Owner:RES INST OF TROPICAL FORESTRY CHINESE ACAD OF FORESTRY

Simulative waterproof and dustproof level tester for photovoltaic junction box

InactiveCN102607779AEnsuring non-destructive testingHigh repair costsMeasurement of fluid loss/gain rateEngineeringNondestructive testing
The invention relates to a simulative waterproof and dustproof level tester for a photovoltaic junction box, which belongs to the technical field of a photovoltaic assembly tester. The simulative waterproof and dustproof level tester for the photovoltaic junction box comprises a vacuum source, a main test desk, and more than one or two test systems. Each test system comprises a hand-pull vacuum valve, a fixed tool, a pressure valve and a pressure meter. The hand-pull vacuum valve comprises a valve body, a valve cover, a piston, an air inlet tube and an air outlet tube. A cylindrical bump of the valve cover is screwed in a cylindrical chamber of the valve body. The hand-pull vacuum valve, the pressure valve and the pressure meter are arranged on a work panel of the main test desk. The air inlet tube is connected with an extraction hole of the fixed tool by a hose and the air outlet tube is connected with the vacuum source by a hose. The pressure valve is connected with both ends of a cylinder of the fixed tool by a hose. The pressure meter is connected between the hand-pull vacuum valve and the photovoltaic junction box by a hose. The simulative waterproof and dustproof level tester for the photovoltaic junction box has the advantages that the simulative waterproof and dustproof level tester for the photovoltaic junction box is convenient to operate and has fast test speed; that each person can test 180 pieces of photovoltaic junction boxes every hour, 100% flawless detection of the photovoltaic junction boxes can be ensured; and the tested product reaches the level of IP67.
Owner:NINGBO KANGDI PHOTOVOLTAIC TECH

Method for early detecting toxicity of paralytic shellfish poison

The invention discloses a method for early detection on the toxicity of the Paralytic shellfish poisoning toxin in the technical field of the biological engineering, which is to make the check solution by the on-site shellfishes and make the abdominal cavity injection to the mouse with the check solution to test the content of the acetylcholine in the mouse brain and the change on activity of the endothelial nitric oxide synthase. The Paralytic shellfish poisoning toxin can be gained from the content of the acetylcholine and activity of the endothelial nitric oxide synthase, which can make an early detection on the toxicity of the Paralytic shellfish poisoning toxin. The invention realizes the on-site and fast test and analysis to large amount of samples and the early detection on the toxicity, which reduces the time by two to ten times compared with the common mice method currently used in China, avoiding any occurrence of the individual symptom and applicable to the on-site and fast test and analysis to large amount of samples and the early detection on the toxicity. The invention is simple and convenient to operate with only test on change of common biochemical parameters required, which is applicable to promotion and use by the on-site and grass-root test departments.
Owner:SHANGHAI JIAO TONG UNIV
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