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209results about How to "Significant contribution" patented technology

SAM weighted KEST hyperspectral anomaly detection algorithm

The invention discloses an SAM weighted KEST hyperspectral anomaly detection algorithm (SKEST). The method includes the steps: firstly, deducing the SKEST algorithm; and secondly, calculating the SKEST value of each image element in a hyperspectral image by the aid of a double-rectangular window, performing threshold segmentation and detecting abnormal points. In the SKEST algorithm, based on the KEST (kernel Eigen space separation transformation) algorithm, a weight factor is introduced into each sample in a DCOR (difference correlation) matrix of a high-dimensional Eigen space detection point neighborhood by means of SAM (spectral angle mapper) measurement, and the weight factor of each sample depends on an included angle between the spectral vector of the sample and a data center of the detection window. Therefore, abnormal data in the detection window are suppressed, the contribution of main compositional data is highlighted, and the DCOR matrix can more effectively describe target and background data distribution difference. Besides, the SAM is robust to spectral energy, and by the aid of a radial basis function, the SKEST algorithm considers both spectral energy difference and spectral curve shape difference of signals, and accordingly conforms to hyperspectral data characteristics more effectively.
Owner:NANJING UNIV OF SCI & TECH

Early-strength expansion delayed type hole sealing material

InactiveCN107651905AImprove expansion performanceImprove workabilityWater soluble polymersToxicity
The invention relates to an early-strength expansion delayed type hole sealing material. The early-strength expansion delayed type hole sealing material comprises, by weight, 1%-1.5% of inorganic early-strength admixtures, 0.01%-0.05% of organic early-strength admixtures, 0.3%-0.8% of water reducing agents, 0.01%-0.08% of micro-capsule expansion admixtures, 33%-35% of water and the balance cement.A process for preparing the early-strength expansion delayed type hole sealing material includes mixing the micro-capsule expansion admixtures, the early-strength admixtures, the water reducing agents and the water with the cement according to proportions and uniformly stirring the micro-capsule expansion admixtures, the early-strength admixtures, the water reducing agents, the water and the cement to obtain the early-strength expansion delayed type hole sealing material which is a finished product. A core material for the micro-capsule expansion admixtures is aluminum powder, and the micro-capsule expansion admixtures are prepared from water, water-soluble polymers and the aluminum water according to a mass ratio of 100:2-5:1-3 (wt). The early-strength expansion delayed type hole sealingmaterial has the advantages that the early-strength expansion delayed type hole sealing material is short in setting time and high in early strength, and invalid expansion and loss of expansion properties in cement hydration initial phases can be effectively reduced by delayed expansion; expansion of the early-strength expansion delayed type hole sealing material can be delayed by approximately 4h, the setting time of the early-strength expansion delayed type hole sealing material is shorter than 300 min, and the one-day compressive strength of the early-strength expansion delayed type holesealing material is 4.71 MPa; the early-strength expansion delayed type hole sealing material is low in cost and free of toxicity or pollution, and mine gas extraction hole drilling sealing and strength requirements can be completely met.
Owner:ANHUI UNIV OF SCI & TECH

Biberberine for injection as veterinary herb medicine composite preparation and preparation technique and use thereof

The invention relates to a double coptis for injection as a veterinary herbal medicine compound preparation and a preparation technique as well as an application thereof. The compound preparation is made from the following parts of medicines by weight: 1250 portions to 3750 portions of honeysuckle, 1250 portions to 3750 portions of scutellaria and 2500 portions to 7500 portions of forsythia. Sustained release accessories contain 200 portions of hydroxypropyl methylcellulose and 100 portions of sodium carboxymethylcellulose. The containing of sustained release accessories can reduce injection times for large animals and the stress response of large animals. The veterinary herbal injection preparation has the functions of antiviral, antibacterial, anti-inflammatory and antipyretic analgesic effects, as well as improving immunity and the like, and can be applied to epidemic diarrhea, transmissible gastroenteritis, swine paratyphoid, septicemia caused by various diseases, cough, dyspnea, skin cyanosis, arthrocele, lameness, swine reproduction and respiratory disturbance syndrome and cow mastitis caused by streptococcosis, haemophilus parasuis infection, contagious pleuropneumonia, swine lung plague in veterinarian clinical practice.
Owner:JIANGXI ZHONGCHENG MEDICINE GROUP
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