HNS型三相分离器的应用

在分析HNS型三相分离器工作原理及结构的基础上，通过现场实际应用测试，指出该设备油气水分离系统运行平衡，对含水率在80％以上的产出液，经该设备脱气，脱水处理后，原油含水率低于0．38％，水中含油低于300mg/L，完全能达到设计指标。     

Evaluation the effect of subchronic feeding of transgenic cotton line (CKC1) on the faecal microbiota of albino rabbits

Recent studies have demonstrated a strong relationship between the intestinal microbiota and the host health. As such, consumers are increasingly becoming more concerned about the potential effect of certain foods/feeds, particularly of transgenic origin on the gut microbiota. Although the European Food Safety Authority has recommended in their guidelines, to study the effect of transgenic food/feed on host-microbiota, yet, few studies have focused on the evaluation of such effects mainly due to culturing difficulties. Therefore, this study was intended to evaluate the potential adverse effects of transgenic diet consumption on some specific gut microflora (Lactobacillus group, Bifidobacterium genus, Escherichia coli subgroup and Enterococcus genus) of rabbits. A total of forty-eight rabbits were randomly assigned into four groups and fed a diet containing a variable proportion of transgenic cottonseeds at 0, 20, 30 and 40% inclusion level, respectively. Changes in the specific or total faecal bacterial population were monitored at five different experimental stages (i.e. 0, 45, 90, 135 and 180 days) using both the traditional plate count method (TM) and quantitative real-time PCR (qPCR). No significant differences (p > .05) were observed concerning numbers of specific bacteria or total bacteria between the control and experimental groups, though qPCR showed numerically higher values in terms of 16S rRNA gene copies as compared to the values obtained from TM. However, such numerical differences were biologically insignificant (p > .05). Similarly, no significant variations were noticed in the calculated B/E (log₁₀ copies of Bifidobacterium per g faces/log10 copies of E. coli genome per g faeces) ratios in all the groups. All the ratios were in the range of 1.24 to 1.30 throughout the experiment, indicating a good balance of intestinal microflora and greater resistance to intestinal disorders. It is therefore concluded that feeding transgenic cottonseeds could not adversely affect the gut microflora of rabbits during a long-term study.     

Dynamic Modeling and Simulation of 440 t/h Steam-cooled Cyclone Separator for CFB Boiler

A dynamic mathematical model of the steam-cooled cyclone separator in a 440 t/h CFB boiler has been established.Based on the mathematical model,simulation model of the cyclone separator is created with the advanced continuous simulation language(ACSL).The validity of this model has been verified by the simulation experiments and analysis.This model can provide a theoretical guidance for operation and optimal design of the cyclone separator.     

Solution the Polarization Field Strength inside Ellipsoid in a Homogeneous Dielectric

The solution of polarization field strength in ellipsoid and a homogeneous dielectric in condition of a constant external field is obtained with strict derivation and ellipsoidal coordinate. The conclusion that some textbooks given: the direction of polarization field strength with the direction of external field holds strict anti-parallel must be supplemented with additive certain conditions, otherwise it will not be correct. By means of the latticework and the step change calculation, the angle value of polarization vector with the external field is calculated and the changing situation about the angle value with the change of three half axes of ellipsoid is analysied.     

Detecting System of the Dielectric Loss in Capacitive Equipment Based on Virtual Instruments

A digital detecting system of the dielectric loss in the capacitive equipment is introduced based on virtual instruments.This system can real-time collect,analyze,process and storage electrical signals with National Instruments' program LabVIEW and ADLINK,s DAQ board.Through the simulation test in lab and the real test in electric substation,it is shown that this system has high accuracy on testing the dielectric loss in the capacitive equipment,the real test data is stable and the relative error of real dielectric loss is less than 5%.It is to say that this system can meet the requirement of the real on-line monitoring.     

介电式脱绒棉种分选机的研制

为了提高棉花种子的发芽率，采用了先进的计算机控制技术，研制了介电式棉种分选机，达到了利用种子的介电特性进行分选的目的。试验表明，该机工作稳定可靠，操作方便．完全满足种子精选的要求，具有广泛的推广前景。     

旋风分离器在饲草干燥设备中的应用

饲草干燥设备中的旋风分离器与普通旋风分离器从结构上有很多不同点,从而使其各部分参数以及饲草颗粒的运动轨迹有很大不同。为此,根据旋风分离器的工作原理,分析了饲草干燥设备中的旋风分离器各个部分的参数,并从理论上给出了饲草在旋风分离器中的运动轨迹,为旋风分离器在饲草干燥设备中的应用提供理论依据。     

智能粮食水分测试仪的研制

给出以AT89C52单片机为核心的粮食水分测试仪的硬件结构组成,并详细介绍了信号处理和测量方法;通过对传感器的标定并进行相应的数据处理。通过实验发现,该仪器使用方便,测量精度高。     

用于滴灌的碟式分离机的转鼓有限元优化设计

碟式分离机的转鼓是一个复杂的锥体,按照传统算法进行其强度计算,得到的结果往往具有很大的质量富余,从而影响到分离机的综合经济指标.为解决这一问题,在有限元应力分析的基础上,以转鼓的总质量为目标函数,以其部分结构参数为优化参数,建立了转鼓的优化设计数学模型.该模型为多维约束优化问题,选取了惩罚函数内点法进行求解,并给出了算法流程图.对实际转鼓的优化结果表明,在保证强度、刚度的前提下,可使分离机的转鼓质量减小24.2%,可提高机械效率,延长转鼓使用寿命.