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KOLMOGOROV模型的无害时滞 被引量:1
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作者 杨正清 《生物数学学报》 CSCD 北大核心 1994年第3期132-137,共6页
关键词 LOCALLY ASYMPTOTICALLY STABLE EQUILIBRIUM HARMLESS delays.
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Physical Properties and Regulating Mechanism of Fluoride-Free and Harmless B_2O_3-Containing Mould Flux 被引量:9
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作者 LI Gui-rong WANG Hong-ming DAI Qi-xun ZHAO Yu-tao LI Jing-sheng 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2007年第1期25-28,共4页
The flux agents in common mould fluxes were fluoride and sodium oxide, which would do great harm to environments. B2O3 was selected as flux. The physical properties of B2O3-containing mould fluxes were studied. The co... The flux agents in common mould fluxes were fluoride and sodium oxide, which would do great harm to environments. B2O3 was selected as flux. The physical properties of B2O3-containing mould fluxes were studied. The corresponding physical properties of 37. 91% CAO-43.09% SiO2-5% Al2O3-5% MgO-2% Li20-7% B2O3 mould fluxes were as follows: the melting point was 909℃, the flowing temperature was 1 160℃, the viscosity and surface tension at 1300 ℃ were 0. 4 Pa · s and 0.32 N/m respectively, which could meet the demands for certain kinds of steels for mould fluxes in continuous casting. 展开更多
关键词 B2O3 -containing mould flux fluoride-free flux harmless flux physical property
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Experimental Study on Three-phase Separation of Oily Sludge 被引量:2
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作者 Jia Min Wang Lei +2 位作者 Zhang Xu Wang Hui Si Huanhuan 《Meteorological and Environmental Research》 CAS 2017年第6期47-49,共3页
Three-phase centrifuge was used to process oily sludge,and the requirement of mud,oil and water three-phase separation was satisfied through the optimization of parameters. The results showed that when the input quant... Three-phase centrifuge was used to process oily sludge,and the requirement of mud,oil and water three-phase separation was satisfied through the optimization of parameters. The results showed that when the input quantity was lower than 5 m^3/h,the optimal operation parameters of the three-phase centrifuge are shown as follows: the frequency of the main motor and vice motor was 33 and 30 Hz respectively,and the flocculant flow was 0. 7 m^3/h,while the oily sludge temperature was 55 ℃. Water content in the separated sludge decreased from 98% to lower than 70%,and the goal of reduction and harmless treatment of oily sludge could be achieved,which could provide essential conditions for subsequent resource utilization and could be used to guide industrial production. 展开更多
关键词 Oily SLUDGE THREE-PHASE SEPARATION Operation PARAMETERS Reduction HARMLESS RECLAMATION
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Performance of Biogas Production from Anaerobic Codigestion of Dead Pigs and Pig Manure 被引量:1
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作者 Cheng Xiaowei Zhu Hongguang +2 位作者 Zhang Tao Peng Shengnan Li Ling 《Meteorological and Environmental Research》 CAS 2017年第3期71-75,共5页
With the development of large-scale and intensive pig breeding,the harmless disposal of dead pigs has become increasingly prominent.The method to process dead pigs by biogas engineering can realize resource utilizatio... With the development of large-scale and intensive pig breeding,the harmless disposal of dead pigs has become increasingly prominent.The method to process dead pigs by biogas engineering can realize resource utilization of dead pigs and and obtain high economic benefit. In this paper,through a batch of experiments,the feasibility of anaerobic co-digestion of dead pigs and pig manure was verified,and effects of addition proportion of dead pigs and reaction temperature on biogas production from the anaerobic co-digestion were analyzed. The results showed that when the reaction temperature was 35 ℃ and the adding proportion of the dead pig was 12%,the fermentation could get the best effect,and the maximum of methane content could reach 64. 72%,while the total biogas yield was up to 5 310 ml,which was 26% higher than single fermentation of pig manure. Meanwhile,the unit TS and VS biogas yield could rise by 30% and 22% respectively. 展开更多
关键词 ANAEROBIC FERMENTATION DEAD PIGS HARMLESS disposal Pig farms BIOGAS engineering
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Regulations on Planting Techniques of Harmless Feeding Sorghum bicolor(L.) Moench in Hebei 被引量:1
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作者 Hanzhang ZHOU Huan LIU +4 位作者 Xinjian ZHOU Shuhong YUAN Xueyan XIA Shenglin HOU Zhimin WEI 《Agricultural Science & Technology》 CAS 2017年第1期50-55,共6页
According to many years of experimental summary, regulations on planting technique of harmless feeding Sorghum bicolor (L.) Moenchwere studied from the application scope, basic demands of planting, preparation be fo... According to many years of experimental summary, regulations on planting technique of harmless feeding Sorghum bicolor (L.) Moenchwere studied from the application scope, basic demands of planting, preparation be fore seeding, demands of seeding, field management, clipping and harvesting, transportation, storage, ledger management and other technical requirements, and specific measures and technical indicators of the technical regulations were analyzed, so as to provide normalized, standardized, industrial and marketization technical support for the planting of harmless feeding S. bicolor (L.) Moench. 展开更多
关键词 HARMLESS Feeding Sorghum bicolor (L.) Moench Planting techniques REGULATIONS
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Effect of Three Treatment Measures on Harmless Seedling Raising of Pinus sylvestris var.mongolica Litv. 被引量:1
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作者 汪智军 靳开颜 阿不都热西提.热合曼 《Agricultural Science & Technology》 CAS 2015年第12期2761-2763,2869,共4页
Three treatment measures for raising seedlings by sowing, Le. covering seeds with two layers of forest soil, culturing seedlings under full sunshine and timely sowing in late autumn, were adopted in this study. The re... Three treatment measures for raising seedlings by sowing, Le. covering seeds with two layers of forest soil, culturing seedlings under full sunshine and timely sowing in late autumn, were adopted in this study. The results indicated that the three treatments were of good prevention effects on sheath blight or seedling blight, sunscald and rat damage in Pinus sylvestris var. mongolica, could avoid the pollution of agrochemicals to soil and environment as well as decrease cost for raising seedlings, and thus could promote the development of bio-agrochemicals or bio-fungicides with high efficiency and no pollution for resisting the pathogens of sheath blight. 展开更多
关键词 Pinus sylvestris var. mongolica HARMLESS Seedling raising
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Research Progress on Harmless Treatment of Dead Livestock and Poultry with Alkaline Hydrolysis in China
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作者 Zhang Zhenling Xu Haifei +2 位作者 Sun Peng Zhao Bingkai Dong Shuhong 《Animal Husbandry and Feed Science》 CAS 2017年第6期346-348,354,共4页
China's animal husbandry industry has developed rapidly and the inventory of swine, poultry, and sheep has been in the first place in the world of late years. For several consecutive years, the annual slaughter swine... China's animal husbandry industry has developed rapidly and the inventory of swine, poultry, and sheep has been in the first place in the world of late years. For several consecutive years, the annual slaughter swine has reached to more than 700 million head, 70 million head of carcasses, about 2 million tons. The number will be even more if cattle, sheep and poultry had been considered. If handled improperly, the large number of carcasses of livestock and poultry will seriously pollute environment and even bring food safety issues and harm to public health security. More and more concern has been attracted on harmless disposal of dead animals. Of all the harmless disposal methods on carcasses of livestock and poultry, the application and research of alkalizalion hydrolysisar ( AH ) are less and only restricted in the higher-level security laboratory field in China. The method of alkalization hydrolysis has the advantages of completely inactivating pathogenic microorganisms (including prions), no harmful gas, simple operation, low cost, etc, which has the value of research and application. This paper summarized the characteristics and the sterilization effect of alkaline hydrolysis, and discussed the processing and application of AH products of animal carcasses ,meanwhile, introduced the types, research and application state of AH in China, finally, briefly discussed the application prospect of AH in China. 展开更多
关键词 Carcasses of livestock and poultry Alkalization hydrolysis Harmless disposal technology PRIONS
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Present Situation,Problems and Countermeasures for Harmless Treatment of Dead Livestock and Poultry in Fujian
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作者 Zhou Qiong Liu Dejuan +1 位作者 Yang Xunhua Zeng Yurong 《Animal Husbandry and Feed Science》 CAS 2016年第5期251-254,260,共5页
A serial of management and support policy for harmless treatment of dead livestock and poultry had been formulated in Fujian Province, and the effect was remarkable. But there were still some problems in the implement... A serial of management and support policy for harmless treatment of dead livestock and poultry had been formulated in Fujian Province, and the effect was remarkable. But there were still some problems in the implementation of the policy, the technique of harmless treatment, livestock insurance and invcstigation and punishment of illegal behavior. Therefore, the following countermeasures were put forward: strengthen the responsibility system for harmless treatment of dead livestock and poultry; adjust harmless treatment mode to local conditions; build centralized treatment plant; punish illegal and criminal activities strictly; improve linkage policy of insurance and harmless treatment of livestock and poultry. 展开更多
关键词 Dead livestock and poultry Harmless treatment Livestock insurance
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Difficulties and Countermeasures in Harmless Treatment of Infected Pig Carcasses
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作者 Mingquan LI 《Asian Agricultural Research》 2021年第5期7-8,共2页
This paper introduced the difficulties in the handling of infected pig carcasses,such as difficulty in finding,difficulty in collection and transportation,difficulty in facility construction,and difficulty in monitori... This paper introduced the difficulties in the handling of infected pig carcasses,such as difficulty in finding,difficulty in collection and transportation,difficulty in facility construction,and difficulty in monitoring and supervision,etc.The reasons for these difficulties are shortcomings in the top-level design of the policy to the specific measures at the grassroots level.In view of these shortcomings,the author came up with some pertinent recommendations,including improving relevant regulations and policy measures,establishing a sound system and network for the collection,transportation and processing of infected pig carcasses,reinforcing punishment and strengthening linkage and cooperation between departments. 展开更多
关键词 Infected pig carcasses Harmless treatment DIFFICULTIES COUNTERMEASURES
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Paradox of Using Intensive Lowering of Blood Glucose in Diabetics and Strategies to Overcome It and Decrease Cardiovascular Risks 被引量:6
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作者 衡先培 杨柳清 +3 位作者 陈敏灵 李亮 黄苏萍 雷缨 《Chinese Journal of Integrative Medicine》 SCIE CAS CSCD 2015年第10期791-800,共10页
Hyperglycemia significantly increases the risk of cardiovascular disease (CVD) in diabetics. However, it has been shown by a series of large scale international studies that intensive lowering of blood glucose level... Hyperglycemia significantly increases the risk of cardiovascular disease (CVD) in diabetics. However, it has been shown by a series of large scale international studies that intensive lowering of blood glucose levels not only has very limited benefits against cardiovascular problems in patients, but may even be harmful to patients at a high risk for CVD and/or poor long-term control of blood glucose levels. Therefore, Western medicine is faced with a paradox. One way to solve this may be administration of Chinese herbal medicines that not only regulate blood glucose, blood fat levels and blood pressure, but also act on multiple targets. These medicines can eliminate cytotoxicity of high glucose through anti-inflammatory and anti-oxidant methods, regulation of cytokines and multiple signaling molecules, and maintenance of cell vitality and the cell cycle, etc. This allows hyperglycemic conditions to exist in a healthy manner, which is called "harmless hyperglycemia" Furthermore, these cardiovascular benefits go beyond lowering blood glucose leve^s. The mechanisms of action not only avoid cardiovascular injury caused by intensive lowering of blood glucose levels, but also decrease the cardiovascular dangers posed by hyperglycemia. 展开更多
关键词 diabetes cardiovascular risk Chinese herbal medicine glucose toxicity harmless hyperglycemia
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Inclusion control study in high aluminum steel 被引量:1
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作者 Bo-wen Peng Fang-jie Li +2 位作者 Shao-bo Zheng Hui-gai Li Qi-jie Zhai 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2018年第8期796-802,共7页
In order to reduce the negative effect of gross Al-rich inclusions on high aluminum steel, both thermodynamic calculations and designed deoxidization experiments were performed in condition of different silicon and al... In order to reduce the negative effect of gross Al-rich inclusions on high aluminum steel, both thermodynamic calculations and designed deoxidization experiments were performed in condition of different silicon and aluminum deoxidization sequences. Thermodynamic calculations demonstrated that the complex inclusions with low melting point (harmless inclusions) are more favorable to be formed in condition that the melt was deoxidized using ferrosilicon first and then pure aluminum (Si/A1 deoxidization) than that deoxidized using pure aluminum first and then ferrosilicon (AI/Si deoxidization). Al-rich inclusion decreases 83% from A1/Si deoxidization to Si/A1 deoxidization. The experimental results showed that the total quantity of inclusions decreases by 24% and the proportion of harmless inclusions is doubled when comparing Si/Al deoxidization with Al/Si deoxidization. The morphology of complex inclusion tends to be spherical, and the mean size is less than 5μm in condition of Si/Al deoxidization. The formation mechanism of harmless inclusions was discussed, and it is believed that the inclusions can be controlled reasonably in high aluminum steel using Si/Al deoxidization. 展开更多
关键词 Harmless inclusion Control technique High aluminum steel DEOXIDIZATION Thermodynamic calculation
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