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The Influence of feeding method on Fluidization Behavior of Fixed Fluidized Bed

China Petroleum Processing & Petrochemical Technology 2014年第1期16卷 13-18页

作者： Ren Shihong Mao Anguo Wei Xiaoli SINOPEC Research Institute of Petroleum Processing

An experimental installation of cold model simulation was set up to study the bed pressure drop in different regions of fixed fluidized bed reactor during top feeding and bottom feeding, respectively, at various gas velocities with the fluidization image of solid particles monitored at the same time. By comparing the changes in bed density and operating gas velocity in different regions of fixed fluidized bed reactor, the influence of top feeding and bottom feeding patterns on fluidization behavior could be investigated. The results showed that the bed density in top feeding reactor responded more stably to the change in gas velocity along with the advantage of working in a wider range of operating gas velocities. Based on this study, it is concluded that existing bottom feeding reactor configurations cannot meet the fluidization requirements; and optimization of bottom feeding reactor will be needed.

关键词： feeding method fixed fluidized bed fluidization behavior bed density operating gas velocity

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Effects of Clenbuterol,Genotype,and feeding method on Bodyweight Gain of Meat Rabbits

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Journal of Northeast Agricultural University(English Edition) 1999年第1期6卷 51-55页

作者： ZhuXiangping PanQingyu 等 Dept.ofAni.Sci. LaiyangAgriculturalCollege265200 YantaiNo.5MadialProfessionalAcademy

Four-factor and three-level orthogonal experimental design(L9(34))was used in the *** effects of three genotypes:Germany SAB three-bred-cross rabbits(S2),New Zealand purebred(N),and crossbred rabbits(ON);three levels of Clenbuterol treatment: 1 ng.g-1,2 ng.g-1and 3 ng.g-1,and three feeding methods:5-day,7-day and 10-day withdrawal period after two weeks of feeding Clenbuterol(CL)on bodyweight gain were *** apparently improved average daily gain(ADG)of rabbits.70-day ADG of 5-day and 10-day withdrawal were higher than that of 7-day withdrawal,70-day ADG of S2 genotype was significantly higher than that of the control and N genotype was ***,additive dose and feeding method had significant effects on overall-stage *** genotype,2 ng.g-1 dose and 5-day withdrawal feeding method was the *** of different genotype to Clenbuterol appeared different at experimental prophase or whole experimental period.

关键词： genotype clenbuterol feeding method meat rabbits bodyweight gain

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Effects of feeding method on Seeded Semi-continuous Emulsion Polymerization of Fluorinated Acrylate

Effects of Feeding Method on Seeded Semi-continuous Emulsion...

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The 4th Joint China/Japan Chemical Engineering Symposium

作者： CHEN Yong-chun HU Xiao-ping*(Department of Chemical Engineering Zhejiang University Hangzhou 310027 China)

The polymers of fluorinated acrylate （FA） have attracted great attention because of their excellentproperties such as chemical resistance, water/oil repellency, and low coefficient of friction. As scientificresearches continue, fluorinated acrylate polymers have been widely used, as membranes or dope, in a largenumber of areas. In this paper, we fixed attention on effects of different ways of feeding on polymerization and structures ofemulsion particles without organic solvent, which could cost a lot and cause pollution for environment. Then wediscussed the technology of preparing latex particles with structure of core-shell in order to find out the optimalconditions of seeded emulsion polymerization for fluorinated acrylate. Two-stage emulsion polymerization was applied in this study. At first stage, the seed emulsion polymers wereobtained, and for the second stage, the particles were synthesized by semi-batch method dropping FApre-emulsion. Copolymer of Actyflon-G04, methyl methacrylate （MMA） and butyl acrylate （BA） was prepared,using mixture of OP-10 and SDS emulsifying agent as emulsifier, by means of seeded semi-continuous emulsionpolymerization. The effects have be discussed, relating to the way of feeding, the amount of initiator, the amountof emulsifiers, and the time of dropping on size and structure of the emulsion particles as well as the latex *** size distribution and morphology of particle were characterized by Malvern2000 and transmission electronmicroscopy （TEM）. The dissolvability of latex particles in THF was tested. The surface compositions andproperties of the latex films were characterized by ATR-FTIR and contact angle method. It was shown that fluorinated latexes with structure of core-shell could be synthesized by means of seededsemi-continuous emulsion polymerization without organic solvent. The factors mentioned above would greatlyaffect both the structure of emulsion particles and the properties of emulsion film. From the results

关键词： fluorinated acrylate feeding method emulsion polymerization optimum synthesis conditions

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feeding methods, sleep arrangement, and infant sleep patterns: a Chinese population-based study

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World Journal of Pediatrics 2016年第1期12卷 66-75页

作者： Xiao-Na Huang Hui-Shan Wang Jen-Jen Chang Lin-Hong Wang Xi-Cheng Liu Jing-Xiong Jiang Lin An Department of Children Health National Center for Maternal and Children HealthChinese Center for Disease Control and PreventionBeijingChina Department of Epidemiology Saint Louis University College for Public Health and Social JusticeSt.Louis.MOUSA The National Center for Chronic and Non-communicable Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijingChina Bronchoscopy Center Affi liated Children Hospital of Beijing Capital Medical UniversityBeijingChina Department of Public Health Peking University Health Science CenterBeijingChina

Background:Findings from prior research into the effect of feeding methods on infant sleep are *** objectives of this study were to examine infants'sleep patterns by feeding methods and sleep arrangement from birth to eight months ***:This longitudinal cohort study enrolled 524 pregnant women at 34-41 weeks of gestation and their infants after delivery in 2006 and followed up until eight months *** study subjects were recruited from nine women and children hospitals in nine cities in China(Beijing,Chongqing,Wuhan,Changsha,Nanning,Xiamen,Xi'an,Jinan,and Hailin).Participating infants were followed up weekly during the first month and monthly from the second to the eighth month after ***-four hour sleep diaries recording infants'sleeping and feeding methods were administered based on caregiver's *** mixed growth curve models were fi tted to estimate the effects of feeding methods and sleep arrangement on infants'sleep patterns over time,controlling for maternal and paternal age,maternal and paternal education level,household income,supplementation of complementary food,and infant birth weight and ***:Exclusively formula fed infants had the greatest sleep percentage/24 h,followed by exclusively breast milk fed infants and partially breast milk fed infants(Pfeeding and bedsharing may be associated with less sleep in *** care professio

关键词： breast feeding feeding method infant sleep sleep arrangement

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Living Habits of Orient Fruit Fly in Taihu Area

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Plant Diseases and Pests 2010年第3期1卷 47-50页

作者：詹国辉樊新华顾忠盈陈云芳蔡平袁卫明储春荣林亚静胡斌华南京林业大学江苏南京210037 江苏省苏州出入境检验检疫局江苏苏州215021 江苏出入境检验检疫局江苏南京210001 苏州大学江苏苏州215001 江苏省太湖常绿果树推广中心江苏苏州215121

[ Objective] The aim was to supply technical basis for developing quarantine and control techniques for orient fruit fly. [ method] By utilizing facilities including rearing chamber and rearing cage, the population of orient fruit fly was established and sustained by using the methods of artificial feeding and fruit culture, and the continuous indoor biological observation was carried out. The isolated enclosure equipped with temperature and humidity recorder was established in Dongshan area of Taihu for cultivating various species of host plants, then the living habits of orient fruit fly were observed everyday. [ Result] Through feeding and observation in lab, the living habit of adult, larva, pupa and eggs of orient fruit fly were studied; the impact of soil depth on the emergence rate of pupa were conducted, and the result indicated that when the soil layer depth increased to 40 cm, there were still adults appeared and their emergence rate was 80%. The results of indoor trend test showed that the selectivity of orient fruit fly on fruits produced in Suzhou was sequenced from high to low as follows： tangerine, dates, pomegranate, peach, orange, pear and persimmon. While the sequence of fruit tree species were tangerine, dates, pomegranate, pears and persimmons according to damage rates of orient fruit fly from high to low under field isolation rearing conditions. In the local tangerine varieties, the damage rate from high to low were Dongting manda- rin, eady tangerine, Wen orange, Huangpi, Zaohong, Liaohong. [ Conclusion] Orient fruit fly artificial rearing facility was established, which laid the foundation for carrvina out bioloaical characteristics observation and biolooical exoeriments

关键词： Taihu Orient fruit fly Living habit Insect rearing room feeding method

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