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Design and Experiment on Environment Friendly Type of Production Equipment of Organic Fertilizer by Chicken Manure
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作者 Liu Xuelan 《Meteorological and Environmental Research》 CAS 2015年第8期50-53,共4页
In accordance with current problems such as odor pollution,long production period,consumption of a large amount of manpower and so on existing in chicken manure fermentation ,an environment friendly type of chicken ma... In accordance with current problems such as odor pollution,long production period,consumption of a large amount of manpower and so on existing in chicken manure fermentation ,an environment friendly type of chicken manure fermentation device is designed. The key parameters of the equipment are resonance activated tube and fermenting cellar. Resonance activated tube makes the activated water,which could improve obvi- ously the biodegradation rate of chicken manure. The aerator could provide enough oxygen to microbes,and the agitator could make oxygen evenly distributed across the chicken manure in fermenting cellar. The test shows that this equipment is high-efficiency,and only takes 7 days to make the chicken manure achieve the decomposed requirement. The organic matter content of composted chicken manure is 91.2%,C/N ratio is 18.8, MPN is 0.04, mortality of ascarid egg is 99.6% ,concentrations of NH3 and H2 S are 4.20 and 1.58 mg/m3, furthermore ,there is no offensive smell in the fermenting cellar. Therefore,the study can provide a pollution-free, high-efficiency, manpower saving fermentation equipment for organic fertilizer production by chicken manure in agriculture area. 展开更多
关键词 Organic fertilizer production equipment Resonant activation device Fermenting cellar Chicken manure China
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Device Anomaly Detection Algorithm Based on Enhanced Long Short-Term Memory Network
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作者 罗辛 陈静 +1 位作者 袁德鑫 杨涛 《Journal of Donghua University(English Edition)》 CAS 2023年第5期548-559,共12页
The problems in equipment fault detection include data dimension explosion,computational complexity,low detection accuracy,etc.To solve these problems,a device anomaly detection algorithm based on enhanced long short-... The problems in equipment fault detection include data dimension explosion,computational complexity,low detection accuracy,etc.To solve these problems,a device anomaly detection algorithm based on enhanced long short-term memory(LSTM)is proposed.The algorithm first reduces the dimensionality of the device sensor data by principal component analysis(PCA),extracts the strongly correlated variable data among the multidimensional sensor data with the lowest possible information loss,and then uses the enhanced stacked LSTM to predict the extracted temporal data,thus improving the accuracy of anomaly detection.To improve the efficiency of the anomaly detection,a genetic algorithm(GA)is used to adjust the magnitude of the enhancements made by the LSTM model.The validation of the actual data from the pumps shows that the algorithm has significantly improved the recall rate and the detection speed of device anomaly detection,with the recall rate of 97.07%,which indicates that the algorithm is effective and efficient for device anomaly detection in the actual production environment. 展开更多
关键词 anomaly detection production equipment genetic algorithm(GA) long short-term memory(LSTM) principal component analysis(PCA)
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High-precision comb targets and manufacture process 被引量:1
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作者 王林 高秀娟 +1 位作者 宫小泽 李晓辉 《Journal of Measurement Science and Instrumentation》 CAS 2013年第2期136-138,共3页
To fabricate the comb target with low damping and high performance-price ratio,0.03-\{0.1 mm\} thickness aluminum foi l used as the conducting medium,the upper and lower surfaces covered with 0.5-1 mm thickness plasti... To fabricate the comb target with low damping and high performance-price ratio,0.03-\{0.1 mm\} thickness aluminum foi l used as the conducting medium,the upper and lower surfaces covered with 0.5-1 mm thickness plastic film,after four processes of thrusting,laminating,punching and cu tting,a 500 mm×\{500 mm\} comb target is fabricated.A 155-mm projectile expl osiv e pow er test is conducted.Using the newly fabricated comb target,the measured initi al velocity of the fragment is 2 070 m/s.Th e test results show that the new comb target is of high test pre cision,small damping,low cost and high production efficiency,and it can measure th e 2 mm×2 m m fragment's initial velocity. 展开更多
关键词 initial fragment velocity net targets comb targets production equipment
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