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88results about How to "Small distribution" patented technology

Seedling raising method for watermelons

InactiveCN108293677AIncrease productionOvercoming the disadvantages of difficulty in reproductionGraftingCultivating equipmentsContinuous croppingRootstock
The invention discloses a seedling raising method for watermelons. The method comprises the steps of rootstock preparation, seedling raising preparation, seedbed preparation, seedling raising, management in a sowing period, grafting and management of grafted seedlings. According to the method provided by the invention, watermelon grafting cultivation is performed on the continuous cropping ground,and above operation has the following advantages: 1, an occurrence of blight is effectively prevented; 2, the watermelons can be grown at lower temperature; and 3, a root system of pumpkin rootstockis stronger than that of a watermelon, the grafted seedlings have stronger water absorbing and fertilizer absorbing capacity, and the roots are widely distributed in soil, so that after the watermelons are grafted, fertilizers can be saved, and the yield of the watermelons can be improved; when tissue culture of triploid seedless watermelons is performed, root induction of vegetative propagation seedlings is more difficult, the vegetative propagation seedlings are used as scions to be grafted onto the pumpkin rootstock, so that a shortcoming that seedless watermelon seeds are difficult to reproduce is overcome; when industrialized seedling raising is performed, under the condition of small seeds, branches or buds are grafted onto the rootstock, so that a quantity of the grafted seedlings is greatly increased; and therefore, the method of using pumpkin and gourd as a rootstock and grafting watermelon seedlings is an effective way of development of watermelon planting.
Owner:钟宇民

Drafting assembly of spinning machine

The invention relates to a drafting device of a spinning machine, belonging to the spinning technical field, comprising a cradle, a plurality of rollers, a front lower roller, a front upper rubber roller, a back upper rubber roller, a back lower roller and a main drafting component, wherein, the front lower roller and the front upper rubber roller are arranged at the front section of a drafting area, the back upper rubber roller and the back lower roller are arranged at the back area of the drafting area, and the main drafting component is arranged at the central section of the drafting area, the main drafting component comprises a middle upper roller, an upper pin, an upper leather collar, a middle lower roller, a lower pin and a lower leather collar. After improvement, the working position dimension D of the front upper rubber roller and the back upper rubber roller are 15 to 28 millimeters, the working position dimension C of the front lower roller and the middle lower roller and the back lower roller are 15 to 32 millimeters, the width dimension B of the upper leather collar and the lower leather collar are 14 to 27.5 millimeters, the width dimension E of the middle upper roller is 15 to 30 millimeters. The drafting device of the spinning machine has the advantages of reducing the friction area and the driving power, improving the operation stability of the drafting component, saving lots of consumable materials, effectively reducing the production cost and improving the quality of resultant yarn.
Owner:HEBEI TAIHANG TEXTILE MACHINERY CO LTD

Method and system for identifying abnormal industry users and abnormal power utilization behaviors of power system

The invention provides a method and a system for identifying abnormal industry users and abnormal power utilization behaviors of a power system. The method comprises the following steps: acquiring power consumption data of each industry; establishing power utilization characteristic index items capable of accurately describing industry characteristics based on the industry characteristics; whereinthe power utilization characteristic index items comprise peak time periods, namely a valley period, valley period power consumption and peak period power consumption; determining user characteristicindex valley and peak load ratios through the power utilization characteristic index items; according to the method, on the basis of establishing power utilization characteristic index items, adopting an AP clustering algorithm to carry out clustering analysis on power utilization behaviors according to industries, and abnormal users with wrong power utilization industry attribute identificationand abnormal power utilization behavior users in the industries are identified through clustering results. According to the method and the system, the number of user clusters is remarkably reduced, the difficulty of electricity consumption abnormity detection and the false alarm rate of electricity stealing detection are correspondingly reduced, and the operation benefit of a power supply enterprise is effectively improved.
Owner:CHINA ELECTRIC POWER RES INST +6

Method for preparing high-purity lithium carbonate

ActiveCN104701545AWell mixedStrong depolymerization abilityCell electrodesSecondary cellsMass ratioLithium carbonate
The invention belongs to the technical field of preparation of nanoscale lithium salt and particularly discloses a method for preparing high-purity lithium carbonate. The method includes the steps that firstly, pure water is heated to 60-80 DEG C, the pure water and lithium hydroxide monohydrate are mixed with the mass ratio being two to one, then, a small amount of water-soluble dispersant is added into the mixture and is sufficiently stirred, and the mixture serves as a lithium source; secondly, percarbamide and pure water are mixed in equal mass to serve as a carbonic acid source, and the molar ratio of the percarbamide to the lithium hydroxide monohydrate is 1:1.80-1.95; thirdly, the lithium source and the carbonic acid source are added into a hydro-thermal synthesis reaction still and are sufficiently stirred, then, the still is closed and placed in a drying oven, the still is heated to 100 DEG C-120 DEG C at the speed of 3 DEG C/min and is taken out after being contained for 5-10 h, lithium carbonate size in the still is filtered to obtain a filter cake, the hot filter cake is washed for 2-4 times through boiling pure, and then wet materials are obtained; fourthly, the wet materials are dried for 8-15 h at the temperature being 250 DEG C-350 DEG C, the pressure being -0.1 Mpa- -0.08 Mpa, and finally lithium carbonate powder with the particle diameter being 20-90 nm is obtained.
Owner:HUBEI BAIJIERUI ADVANCED MATERIALS
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