9 results about "Sample viscosity" patented technology

The invention relates to SBS modified asphalt viscosity detection equipment, and relates to the technical field of asphalt detection equipment, the SBS modified asphalt viscosity detection equipment comprises a rack and a detector arranged on the rack and used for detecting the viscosity of a sample, a sample cup used for storing the sample is arranged below the rack, and a lifting part used for driving the detector to lift is arranged on the rack; a heat preservation shell is arranged outside the rack, and a heat preservation seat for bearing a sample cup is arranged inside the heat preservation shell; an electric heating piece used for heating air in the heat preservation shell is arranged in the heat preservation shell. A heating assembly used for heating a sample is arranged in the heat preservation shell, and a control assembly used for controlling the heating assembly according to the temperature of the sample is arranged in the heat preservation shell; a storage opening used for storing the sample cup is formed in the side wall of the heat preservation shell in a penetrating mode, and a moving assembly used for driving the heat preservation base to move between the storage opening and the detector in a reciprocating mode is arranged in the heat preservation shell. According to the method, the influence of the environment temperature on the viscosity detection accuracy of the modified asphalt is reduced, and the viscosity detection accuracy of the modified asphalt is improved.

The utility model discloses a flow cytometer sorting liquid drop anti-adhesion flow guide device which comprises an installation shell, an installation cover is fixed on the side wall of the installation shell, a detection mechanism is arranged on the outer side of the installation cover, an installation support is fixed on the inner wall of the installation shell through bolts, a material storage mechanism is arranged on the top of the installation support, and a flow cytometer is arranged on the material storage mechanism. A sorting mechanism is arranged at the bottom of the storage mechanism, a flow guide mechanism is arranged at the bottom of the sorting mechanism, and an airflow compensation mechanism is arranged on the outer side of a flow guide pipe. The flow guide mechanism is arranged to guide sheath fluid, so that sheath fluid residues can be effectively reduced, cross contamination is avoided, frequent shutdown for cleaning is not needed, the continuity of the flow cytometer during use is guaranteed, flow guide parameters of the flow guide mechanism are adjusted through the airflow compensation mechanism, and the flow cytometer adapts to viscosity and liquid drop speed changes of different samples; and the angle deviation of liquid drop collision is reduced, so that the adhesion risk of liquid drops with different specifications is reduced.

The invention relates to the technical field of biomedical detection, in particular to a rapid detection method for a specific biomarker of precocious puberty of central girls. When a blood sample is detected, an original light intensity sequence of the chromatographic test strip is obtained and adjusted into a standardized net signal sequence; the color band width is controlled by the chromatography flow velocity and can reflect the fluid diffusion level under the sample viscosity, so that the quality control line reference width and the waveform sharpness are determined, and the waveform distribution characteristics are grasped; if the blood viscosity is increased, the light intensity of quality control and interference capture intervals is distorted, and when the light intensity of the interference capture intervals meets preset conditions, saturation evaluation indexes are determined according to peak shape characteristics and quality control line related parameters of the interference capture intervals, and the saturation degree is evaluated; analyzing the light intensity in a membrane gap interval to obtain a background trailing ratio, and quantifying the leakage flux of free interferents; finally, the saturation evaluation index and the background trailing ratio are fused to obtain a blood sample effective value, the sample condition can be comprehensively and accurately reflected, and whether the sample is suitable for detection or not can be determined.

The invention relates to the technical field of biological detection, and discloses a saliva exosome detection kit for non-invasive auxiliary screening of Alzheimer's disease and a preparation method of the saliva exosome detection kit. The specific exosome enrichment system composed of the anti-L1CAM / CD63 double antibody coated capture plate and the anti-MUC1 / KRT19Fab fragment blocking agent is constructed for the first time, about 85% of oral cavity source exosomes can be effectively removed, and the capture purity of neuron source exosomes is remarkably improved; the special saliva preserving fluid containing DTT and a specific enzyme inhibitor is developed, the technical bottlenecks that saliva RNA is easy to degrade and a sample is uneven in viscosity are overcome, and the room temperature stability is prolonged to 8 hours; an RT-qPCR detection system taking saliva exosome miRNA-135a as a core and taking internal reference miRNA-16-5p standardization is established, and clinical sample verification shows that the kit can effectively distinguish the Alzheimer's disease patient from a healthy control, shows excellent inter-group distinguishing ability, and provides a stable, efficient, reliable and complete technical scheme for solving the problem of AD non-invasive early screening.

A control method for an automatic analyzer that can improve robustness, throughput, and measurement accuracy. The automatic analyzer includes a sample loop connected between two sample ports of a plurality of sample ports of a switch valve. The method includes the steps of: adjusting a drive parameter of the syringe corresponding to a viscosity of the sample acquired in advance; switching the switch valve to a first state in which the sipper and the syringe contact with each other without through the sample loop; driving the syringe based on the drive parameter to draw and introduce the sample through the sipper; switching the switch valve to a second state in which the syringe and the sample loop conduct with each other; and driving the syringe based on the drive parameter to introduce the sample into the sample loop.

The utility model relates to double -chamber series connection type dilution pretreatment device, aims at solving current double -chamber series connection structure, and the mixing assembly of connecting pipeline is static design more, when processing high viscosity sample or the scene of flow fluctuation is bigger, easy to appear " short circuit flow " or " dead volume " phenomenon, lead to dilution evenness decline, influence the quality of the technical problem of pretreatment, including: bottom plate, bottom plate top two sides are equipped with first pretreatment cavity and second pretreatment cavity respectively, first pretreatment cavity height is higher than second pretreatment cavity, and both are connected in series through intercommunication mechanism, the utility model can adjust mixing intensity in real time according to sample viscosity and flow fluctuation through drive assembly drive mixing assembly active rotation, avoid static spiral piece or baffle appearing " short circuit flow " when flow sudden change, namely liquid is not mixed directly through fully, ensure that sample and diluent form global turbulence in connecting pipe, eliminate " dead volume ".

The application discloses a kind of targeted thickening polymer shell breaking and effect time test determination methods, comprising the following steps: S1 preparation targeted thickening polymer solution;S2 targeted thickening polymer solution oxygen removal;S3 test different time point sample viscosity;S4 draw sample different aging time and viscosity curve, determine targeted thickening oil displacement agent initial shell breaking time point and effect time point, the application is applicable to oil and gas field development technical field, by simulating formation environment to test shell breaking and effect time, for different types of reservoirs to provide strong basis for optimum polymer, monitor the performance of targeted thickening polymer, ensure the injection quality of polymer in the field, simple to operate, short time, high efficiency, for improving chemical oil displacement precision, more significantly improve recovery, with great research value and application prospect.

The invention relates to the technical field of automatic control of dyeing equipment, and discloses a control method and system of an integrated flaking and dyeing all-in-one machine, and the method comprises the following steps: synchronously collecting a flow resistance signal and a light transmittance signal of a cell sample; establishing lesion cell sedimentation sensitive parameters; calculating a safe angular velocity interval and a safe centrifugation time interval of layered centrifugation; executing layered centrifugal correction; and executing compensation centrifugal control. In the prior art, a scheme of performing slide preparation control by depending on fixed centrifugal parameters or experience setting, and especially under the condition of large difference or obvious fluctuation of sample viscosity and cell load, sufficient retention of pathological cells and background cleanliness are difficult to consider at the same time. Due to the fact that pathological cell sedimentation sensitive parameter modeling and layered centrifugation safety parameter interval control are introduced, self-adaptive adjustment and result verification in the layered centrifugation process are achieved, and therefore pathological cells are prevented from being removed by mistake or damaged by excessive centrifugation.

This invention relates to the fields of analytical detection and online solid-phase extraction technology, specifically to a rapid detection method for trace plasma samples used in pharmacokinetic studies. The method first measures the empty baseline pressure; after injection, it calculates the net sample pressure and total resistance integral in real time, and identifies the transition point from injection to cleaning to lock the fluid dynamics boundary parameters; during the cleaning phase, it calculates the measured pressure decay rate and extrapolates the theoretical pressure decay rate under ideal emptying conditions, uses the total resistance integral to compensate for viscosity at the measured rate, and then obtains the flow hysteresis ratio characterizing the sample matrix retention effect based on both; finally, it uses the flow hysteresis ratio to adaptively correct a standard threshold to obtain a target threshold, and performs flow path switching when the measured rate reaches the target. This invention effectively decouples sample viscosity from adsorption characteristics, enabling adaptive adjustment of the cleaning time based on real-time sample kinetic feedback, completely eliminating matrix residue contamination while ensuring the recovery rate of polar drugs.