The lime nitrification device is one set of core equipment in the lime-milk preparation system.Developed for different purity,particle size of the lime material,three types of lime nitrification device such as rod and ball grinding lime nitrification device,hydrocyclone lime nitrification device,cross mixing lime nitrification device have been successfully applied in the lime-milk preparation system in many large-scale enterprises including Baosteel Group Corporation,Wuhan Iron and Steel(Group) Corporation,Anshan Iron and Steel Company and Shougang Group.Practical application has proved that reasonably choosing different nitrification device to use in the lime-milk preparation system can improve the efficiency of lime nitrification and the quality of lime-milk preparation.The compositions,structural characteristics,technology process,design parameters and the use of occasions of the three types lime nitrification device are described.
In this paper, the preparation method of sulfonated polystyrene, which can fully solute in water, from waste foamed polystyrene is described. The optimum technological conditions are: reaction temperature:323K; reaction time: 2h; rate: n (sulfuric acid):n (propanoic anhydride)=1:1, the sulfonation degree of product is 88.4%.
Symbiotic cultivation on chestnut and amboina can control distinctly quantity of Dark Aphides,the bigger the crown of amboina is,the distincter control effect is.The average density of insect quantity reducing to 79%-96% can reduce the harm of dark aphides efficiently,achieve the biological control of pest finally and increase the economic benefit at the same time. Meanwhile,it is a available approach of ecological production of chestnut。
Based on the summary and characteristic analysis of supply chain stracture researches, a basic stractural model and a fundamental decision are proposed, and some discusses on basic structure are also given.
By the method of probability and taking the parameters such as load, size and material characteristics as random variables, the reliability of winding rigid of the roller is analyzed by the way of Monte-carlo random sampling.
White chest duck, a local species discovered in recent years, is favored greatly by most farmers for its special characteristic in appearance and production performance. For the reason of out - of - orderly traditional mode of production and mates , the community gene of white chest duck tends to be identical. So we can' t breed a good breed with advantage of crossbreed . The author of this article analyses the value of breed selection for this species resources of ducks from the angle of breed selection in systematism, and points out it is of much significance to develop species resources of ducks in the area east of Liaoning for enriching the gene storage of duck breed in the world, enhancing the production performance , and boosting the characteristic of local education.
The development of electronic governance offers an effective method to improve administration and public services of a government. The Chinese government regards electronic governance as the most important requirement in national informatizing program. As a complex system engineering, the implement of electronic governance needs the pre - requistite systematic research. From the view of system engineering and by the approach of WSR system, electronic governance system is studied in this paper.
Utilize the contract between the electric teaching and expounding demonstrating. Draw a Coclusion is that the electricteaching measures are better than tradition.
The types and reasons of fiber damage in blowing carding process, the influence of fiber damage on yarn quality, the method to designate potential fiber damage and some technological measures to reduce the fiber damage are discussed in this paper.
Combining practice with theory,the paper states what shuttleless loom produce pure silk with the quality of material, the preparing process, the kind of equipment, the operating system, and something concerned. At the same time, it demonstrates practible craft parameter with optimization. Provides the manufactures with benificial information and productive experiences.
A bilingual teaching software of multimedia network, which is constructed with technology based on most popular multimedia platform FLASH MX, Firework and HTML etc. , is introduced. It can realize net teaching of Chinese/ English and on - line examination. The design process of the examination and grade system is also given in detail. Combining text, figure, animation and sound together, this software has stronger visualized interaction , practibility and fascination.
In SMT the silk-screen printing is the first process, but the most important and key process of guaranteeing SMT product quality. Analyzing the impact on SMT quality of the silk-screen printing and adopting the corresponding methods to solve the problem are important steps to make the soldering tin ointment leak and print on the plate accurately to guarantee the better quality of the PCB welds.
It is significant to investigate the phytoplankton and to analyse the ecosystem characteristic of the there rivers' water system in the source area of Dahuofang reservoir. It is helpful to find out the present condition and the regulation on change of the three rivers' pollution ,and it is important to find out the affect to the degree of water quality in the reservoir.
An on-line standard addition method for simultaneous determination of Ca, Cu, Fe, Mg and Mn in grains by FI-MPT-AES was established in this paper. Three different smple pretreatment methods were compared. Under optimized conditions, the samples of American Standard Material (1567, 1568) were analyzed, and the results obtained were in good agreement with the certified values. The detection limits for Ca, Cu, Fe, Mg and Mn were shown to be 3.9, 18,31, 6.4 and 69 ng/ mL, respectively, and RSDs were all less than 5.5 %. The recoveries were shown to be in the range of 95.5%~114.1%.
In this paper, graft copolymerization of acrylic acid and acrylamide on starch was studied,which using ceric ammonium nitrate,ammonium persulfate and ammonium persulfate-sodium bisulfate as initiators.The best initiator was determined. Other technological parameters were determined.Under the optimum technological parameter,the ratio of acrylic acid to acrylamide was 30%,the volume of initiator was 3ml,neutralization value of acrylic acid was 80%,the product can absorb distilled water 520g/g.
In target -oriented technology , utilize the target's method encapsulation attribute , can achieve the purpose with hidden information . Is it visit control of authority to utilize , is it face target technology realize information hidden concept completely to let.
It is described how to used DDE technique to transmit the data from the database to Excel files in order to show the data dynamic and really time.
Have recommended at first the basic concept and application of Mathematical Morphology, have introduced the basic principle ,basic nature and method, main point of Edge Detection based on Mathematical Morphology, have gived Opening and Closing application of Morphology based on outline structure of edge in drawing the noise-area and strain the noise, application of Dilatino and Erosion to grey level image processing.
A temperature control system based on voice is described.In this system,temperature on the working site can be collected and indicated by LEDs and voice. The user can control the temperature within certain limits by previous determination on time,even no person is needed in the field to be controlled.
