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300 results about "Sample Type" patented technology

Convenience sample - This type of sample is characterized by the selection of easy to obtain members from the population. Again, this is typically not a worthwhile style for a sampling technique. Systematic sample - A systematic sample is chosen on the basis of an ordered system.

Drilling grabbing shovel type combined sampler device for planetoid detection and use method of drilling grabbing shovel type combined sampler device

The invention discloses a drilling grabbing shovel type combined sampler device for planetoid detection and a use method of the drilling grabbing shovel type combined sampler device. The device comprises a feeding mechanism, a drilling mechanism, a grabbing shovel mechanism and a mounting plate. The use method comprises the following steps of (1) resetting a motor; (2) checking the motor; (3) performing sampling by a grabbing shovel motor; (4) detecting a shovel; (5) rotating a drilling rod to downwards move; (6) checking the drilling rod; (7) lifting the drilling rod; (8) checking the drilling rod; (9) performing sampling; (10) checking a sampling pipe; (11) enabling the drilling mechanism to upwards move; (12) checking a micro switch contact; (13) stopping a feeding motor; (14) checking a sampler; (15) arranging samples; (16) checking the shovel; (17) arranging the samples; (18) checking the sampling pipe; and (19) performing resetting. According to the drilling grabbing shovel type combined sampler device for planetoid detection and the use method of the drilling grabbing shovel type combined sampler device, sample collection can be realized on the surface of a planetoid, and deep sampling can be executed; bedding information of the samples can be kept; the device has the advantages of large sampling amount, various sample types, retention of original appearances of the samples and the like.
Owner:BEIHANG UNIV

Heating stage and heating stage device for X-ray microprobes and experimental method of heating stage device

The invention discloses a heating stage for X-ray microprobes. The heating stage comprises a heating stage body, a heater and a sample holder; an incident window and a transmitting window are coaxially and correspondingly arranged on the front wall and the rear wall of the heating stage body respectively, and the bottom of the heating stage body can be mounted on a sample positioning platform; the sample holder is sleeved in the heater in high heating area ratio; each of the heater and the sample holder is provided with a light transmission hole, and the light transmission hole is coaxial with the incident window and the transmitting window. The heating stage for the X-ray microprobes can be operated vertically, and temperature gradient of samples is small; in addition, the heating stage has the advantages of high light transmission, vacuum chamber, easiness in alignment, good temperature uniform of the samples, wide sample type and shape adaptability, high operation temperature limit and the like. In addition, the invention further discloses a heating stage device and an experimental method thereof. The heating stage device is high in back-scattered fluorescent detection efficiency, sufficient rotatable angle and detection angle, overall atmosphere protection and vacuum environment are provided for the samples. The heating stage, the heating stage device and the experimental method are especially suitable for hard X-ray microprobes.
Owner:SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI

Clinical tissue sample bank information management method

The invention discloses a clinical tissue sample bank information management method, which comprises the following steps of: establishing a clinical tissue sample bank, wherein the sample bank information comprises sample classification label information and positioning label information, the sample classification label information comprises information of hospital, patient hospitalization number, sample type and number and the like, and the positioning label information comprises information of storage equipment, drawers divided in the storage equipment, test tube boxes, test tube number and the like; dividing the storage equipment according to the positioning label information; acquiring a patient sample, correspondingly sticking a sample classification label and a positioning label, and storing the patient sample in the storage equipment according to the positioning label information; submitting a calling request according to the patient hospitalization number; and acquiring the positioning label information of the patient from the sample bank, taking out the positioning label information from the storage equipment, exporting complete sample information of the patient, and returning to the step four. The method greatly improves the sample management efficiency and quality of the sample bank.
Owner:HEPATOBILIARY SURGERY HOSPITAL SECOND MILITARY MEDICAL UNIV +1

Feature clustering comparison-based power prediction method and device for photovoltaic power station

The present invention relates to a feature clustering comparison-based power prediction method and a device for a photovoltaic power station and belongs to the technical field of photovoltaic power generation. According to the technical scheme of the method, firstly, three most significant feature amounts that influence the prediction precision of the photovoltaic power are acquired and accumulated as historical meteorological data. Secondly, the obtained historical meteorological data are adopted as data samples to be clustered, so that the samples are divided into k types of high similarity. Meanwhile, the cluster center of each type of samples is obtained. Thirdly, a prediction model of a corresponding type is established based on the historical data of each type. Fourthly, a corresponding prediction model nearest to the cluster center of a current object is selected for prediction. In this way, different meteorological data are divided into different types of samples. Meanwhile, photovoltaic output prediction models in different meteorological conditions are established, so that the prediction models are trained in the more targeted manner. Moreover, the power prediction is conducted based on the power prediction models established in different meteorological conditions. Therefore, the prediction accuracy of the photovoltaic power is improved.
Owner:XUJI GRP +1

Die casting surface defect detection method and system based on machine vision

The invention provides a die casting surface defect detection method and a die casting surface defect detection system based on machine vision. The die casting surface defect detection system comprises an image acquisition unit, an image processing unit, a HOG + LBP feature extraction unit and an SVM classifier training detection unit, the image acquisition unit is used for acquiring images of thesurfaces of die castings; the image processing unit is used for processing the collected images to obtain images capable of extracting defect feature vectors; the HOG + LBP feature extraction unit isused for performing HOG + LBP feature extraction on the processed image; and the SVM classifier training detection unit is used for training the SVM classifier and carrying out defect identificationby using the trained SVM classifier. According to the method, HOG + LBP feature calculation is adopted, complex multi-dimensional feature calculation is effectively avoided, recognition efficiency isreduced, recognition and classification are carried out through an SVM classifier, the number of needed samples is small, and the problem that a neural network algorithm falls into a local minimum value when sample types are complex is solved.
Owner:SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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