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全自动洗衣机内设分隔间装置的设计研究
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作者 彭诚 《中国设备工程》 2018年第15期131-132,共2页
全自动洗衣机是人们日常生活中常见的一种家用电器,为常用物品、衣物的清洗提供方便,已成为人们生活中不可缺少的家电之一。但现有技术下的洗衣机,其内部空间一定,不可以分隔使用,由于衣物的材质,柔软程度以及贴合情况不同,经常需要将... 全自动洗衣机是人们日常生活中常见的一种家用电器,为常用物品、衣物的清洗提供方便,已成为人们生活中不可缺少的家电之一。但现有技术下的洗衣机,其内部空间一定,不可以分隔使用,由于衣物的材质,柔软程度以及贴合情况不同,经常需要将衣物分开清洗,避免衣物出现过度的缠绕,进而保护衣物不会出现撕裂的现象,但是二次清洗衣物不仅浪费水资源、原料以及时间,而且增加了劳动强度,不便于衣物的正常清洗过程。本研究从全自动洗衣机内部结构的设计入手,在传统洗衣机的基础上设置分隔间,从而达到分隔清洗空间、避免衣物缠绕、节约水资源等效果,对全自动洗衣机的效果优化具有重要意义。 展开更多
关键词 全自动洗衣机 内设分隔间 装置
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室内设计中的空间分隔的重要性浅析
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作者 刘天情 《科技与企业》 2011年第09X期155-155,共1页
过去的室内设计是一片空白,但随着生活水平的不断提高,人们开始追求生活环境的舒适,室内设计的概念逐渐的引入我国,并获得了高速的发展,几年来,我国的室内设计飞速发展,甚至赶超世界先进的国家。现在我们来探讨一下在室内设计中空间分... 过去的室内设计是一片空白,但随着生活水平的不断提高,人们开始追求生活环境的舒适,室内设计的概念逐渐的引入我国,并获得了高速的发展,几年来,我国的室内设计飞速发展,甚至赶超世界先进的国家。现在我们来探讨一下在室内设计中空间分隔的意义。 展开更多
关键词 室内设计 分隔 重要性 探讨
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超高层建筑层间消防隔断设计与研究 被引量:3
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作者 袁青 邬红茹 +1 位作者 彭磊 刘娜 《建筑技艺》 2019年第6期126-127,共2页
对于高度超过250m的超高层建筑,设计可靠耐用的层间防火分隔是幕墙设计的重要工作。通过多类型方案的对比,选择最合适项目的系统,采用科学手段进行分析研究,再辅以实体试验验证,保证建筑的使用安全,也为超高层建筑的层间防火设计找到突... 对于高度超过250m的超高层建筑,设计可靠耐用的层间防火分隔是幕墙设计的重要工作。通过多类型方案的对比,选择最合适项目的系统,采用科学手段进行分析研究,再辅以实体试验验证,保证建筑的使用安全,也为超高层建筑的层间防火设计找到突破点。 展开更多
关键词 防火分隔 超高层消防性能化试验 防火性能 建筑幕墙消防性能化试验
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老油(气)田挖潜的概念与方法 被引量:4
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作者 薛良清 《国外油气勘探》 北大核心 1995年第4期406-410,共5页
本文介绍了美国老油(气)田挖潜的研究现状,重点论述了油气层分隔间类型和老区挖潜的方法与技术,同时也提供了一些"成熟"勘探阶段储量增长的成功实例。
关键词 老油气区 油气层 分隔间 储量 油气勘探
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瓶罐运输车的结构与特点
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作者 乔维高 《专用汽车》 1999年第4期25-26,共2页
介绍了国内外瓶罐运输车的型式和独特的结构特点,阐述了瓶罐运输车的发展趋势。
关键词 瓶罐运输车 搁架 低车架 分隔间 汽车
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Numerical simulation of flow regions in red mud separation thickener's feedwell by analysis of residence-time distribution 被引量:4
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作者 周天 李茂 +3 位作者 李秋龙 雷波 周谦 周孑民 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第4期1117-1124,共8页
The residence-time distribution (RTD) and the compartment model were applied to characterizing the flow regions in red mud separation thickener’s feedwells. Combined with the experimental work, validated mathematic... The residence-time distribution (RTD) and the compartment model were applied to characterizing the flow regions in red mud separation thickener’s feedwells. Combined with the experimental work, validated mathematical model as well as three-dimensional computational fluid dynamics (CFD) model was established to analyze the flow regions of feedwells on an industrial scale. The concept of RTD, although a well-known method for the characterization of mixing behavior in conventional mixers and reactors, is still a novel measure for the characterization of mixing in feedwells. Numerical simulation results show that the inlet feed rate and the aspect ratio of feedwells are the most critical parameters which affect the RTD of feedwell. Further simulation experiments were then carried out. Under the optimal operation conditions, the volume fraction of dead zone can reduce by10.8% and an increasement of mixing flow volume fraction by 6.5% is also observed. There is an optimum feed inlet rate depending on the feedwell design. The CFD model in conjunction with the RTD analysis then can be used as an effective tool in the design, evaluation and optimization of thickener feedwell in the red mud separation. 展开更多
关键词 computational fluid dynamics residence-time distribution compartment model feedwell
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ITS1 SEQUENCES OF NUCLEAR RIBOSOMAL DNA IN WILD RICES AND CULTIVATED RICES OF CHINA AND THEIR PHYLOGENETIC IMPLICATIONS 被引量:22
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作者 周毅 邹喻苹 +2 位作者 洪德元 周骏马 陈受宜 《Acta Botanica Sinica》 CSCD 1996年第10期785-791,共7页
The first internal transcribed spacer(ITS1) of nuclear ribosomal DNA of three wild rice species and two subspecies of cultivated rice, which are distributed in China, was amplified using PCR technique and sequenced wi... The first internal transcribed spacer(ITS1) of nuclear ribosomal DNA of three wild rice species and two subspecies of cultivated rice, which are distributed in China, was amplified using PCR technique and sequenced with automated fluorescent sequencing. The sequences of ITS1 ranged from 193 bp to 218 bp in size and G/C content varied from 69.3% to 72.7%. In pairwise comparisons among the five taxa, sequence site divergence ranged from 1.5% to 10.6%. Phylogenetic analysis of ITS1 sequences using Wagner parsimony generated a single well resolved tree, which revealed that Oryza rufipogon was much more closely related to cultivated rice species than to the other two wild species. Oryza granulata was less closely related to either cultivated rice species or the other two wild species, and might be a unique and isolated taxon in the genus Oryza. The phylogenetic relationships of the three wild rice species and two cultivated rice subspecies inferred from ITS1 sequences is highly concordant with those based on the molecular evidence from isozyme, chloroplast DNA (cpDNA), mitochondrial DNA(mtDNA) and nuclear DNA (nDNA) of the genus Oryza . 展开更多
关键词 Wild rice Cultivated rice ITS1 of rDNA Sequence analysis PHYLOGENY
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密闭场所涂装作业爆炸成因及对策 被引量:1
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作者 李东 《安防科技(安全管理者)》 2005年第5期44-45,共2页
关键词 密闭 爆炸成因 涂装作业 场所 通风不良 进出口 分隔间
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SIR的非能动安全壳系统
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作者 梁仁 《国外核新闻》 北大核心 1991年第9期16-16,共1页
【英国《原子》1991年3月号第22页报道】SIR 设计采用了一种新的安全壳系统。由于 SIR 设计不可能发生大破口失冷事故(LOCA),因此其质量流和能量流被大大减少,这样就可以采用非能动弛压型安全壳。其反应堆压力容器分隔间通过大管道与8... 【英国《原子》1991年3月号第22页报道】SIR 设计采用了一种新的安全壳系统。由于 SIR 设计不可能发生大破口失冷事故(LOCA),因此其质量流和能量流被大大减少,这样就可以采用非能动弛压型安全壳。其反应堆压力容器分隔间通过大管道与8个带肋片的钢容器相接。这8个钢容器均装有半容器水。 展开更多
关键词 安全壳系统 非能动安全系统 反应堆压力容器 钢容器 混凝土壳 分隔间 能量流 质量流 设计 通气孔
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CZART独院住宅 奥地利维亚纳
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作者 matthias raiger christian mandler 《世界建筑导报》 2018年第3期68-70,共3页
在不影响CZART住宅楼静态美的前提下,安德烈亚斯·格纳和格尔达·格纳为这座住宅楼加装檐槽,为外墙加装分隔间、屋顶窗、外墙楼梯以及其他建筑装饰物。这样一来原本显得"很平面"的建筑就包裹上了一层"复合铝"外壳,也让CZAR... 在不影响CZART住宅楼静态美的前提下,安德烈亚斯·格纳和格尔达·格纳为这座住宅楼加装檐槽,为外墙加装分隔间、屋顶窗、外墙楼梯以及其他建筑装饰物。这样一来原本显得"很平面"的建筑就包裹上了一层"复合铝"外壳,也让CZART住宅楼成为维也纳绝佳的观景台。摘自《景观》"地平线素描",作者:WojciechC zaja、EineS kizze观景建筑-GERNER GERNER PLUS 2007。 展开更多
关键词 住宅楼 奥地利 PLUS 静态美 分隔间 装饰物 建筑 观景台
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分离燃油新方法的研究
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作者 赵国雄 《船舶节能》 1995年第1期52-53,共2页
结合传统的燃油处理方法,再采用水洗和闪蒸的方法,可望能改进燃油的清洁状况。在探索比现行传统方式更为有效的分油方法,以便将燃油或调合油分离到更佳的效果方面所作的研究过程中,MAN B&W
关键词 燃油 新方法 处理方法 加热器 油分离 润滑油工业 分隔间 分油机 脱盐装置 闪蒸
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A Top Level Bundle Conductors Laboratory Built in China
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作者 徐乃管 尤传永 《Electricity》 2001年第4期30-35,共5页
This paper introduces the key laboratory on bundle conductors for high voltage overhead lines built byElectric Power Construction Research Institute under the State Power Corporation of China. It consists of 4 sub-lab... This paper introduces the key laboratory on bundle conductors for high voltage overhead lines built byElectric Power Construction Research Institute under the State Power Corporation of China. It consists of 4 sub-laboratories, namely the Aeolian Vibration Lab, Spacer Vibration Lab, Conductor Fatigue Lab and Conductor CreepageLab. The paper introduces also laboratory’s facilities, functions and some experimental results.[ 展开更多
关键词 bundle conductors spacer aeolian fatigue creeping
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Screening of the Gene for Chlorella Identification and Identification of oil-producing Microalgae 被引量:2
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作者 何茹 刘君寒 +1 位作者 王士安 李福利 《Agricultural Science & Technology》 CAS 2011年第6期795-798,共4页
[Objective] The aim was to select suitable gene for Chlorella identification and to identify the oil-producing microalgae.[Method] Four candidate gene sequences,the nuclear genomic rDNA of the 18S rRNA gene,internal t... [Objective] The aim was to select suitable gene for Chlorella identification and to identify the oil-producing microalgae.[Method] Four candidate gene sequences,the nuclear genomic rDNA of the 18S rRNA gene,internal transcribed spacer(ITS),internal transcribed spacer Ⅱ(ITS Ⅱ)and the chloroplast rbcL gene,were selected for Chlorella molecular identification.Through these four candidate genes,the genetic variability and distinguish ability between intra-species and inter-species was analyzed to choose the right genes for identification of the high oil-content Chlorella.On this basis,application of these gene segments were classified and identified for five fresh-water isolated Chlorella,which oil-content is more than 30%.[Result] ITS gene was a suitable gene because of its high variation and short fragment length,meanwhile its genetic distance intra-species(0.439 6±0.135 9)was larger than inter-species(0.045 7±0.084 3).Its sequence length varied between different species whereas highly conserved in the same species.By the application of ITS sequences,respectively,five high oil-content stains were identified as one C.vulgaris,two strains of C.sorokiniana and two strains of algae Chlorella sp.[Conclusion] This study had provided reference for the establishment of identification gene pool of Chlorella. 展开更多
关键词 Oil-producing microalgae Molecular identification Internal transcribed spacers 18S rRNA gene Genetic distance
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An improved resampling algorithm for rolling element bearing fault diagnosis under variable rotational speeds
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作者 赵德尊 李建勇 +1 位作者 程卫东 温伟刚 《Journal of Southeast University(English Edition)》 EI CAS 2017年第2期150-158,共9页
In order to address the issues of traditional resampling algorithms involving computational accuracy and efficiency in rolling element bearing fault diagnosis, an equal division impulse-based(EDI-based) resampling a... In order to address the issues of traditional resampling algorithms involving computational accuracy and efficiency in rolling element bearing fault diagnosis, an equal division impulse-based(EDI-based) resampling algorithm is proposed. First, the time marks of every rising edge of the rotating speed pulse and the corresponding amplitudes of faulty bearing vibration signal are determined. Then, every adjacent the rotating pulse is divided equally, and the time marks in every adjacent rotating speed pulses and the corresponding amplitudes of vibration signal are obtained by the interpolation algorithm. Finally, all the time marks and the corresponding amplitudes of vibration signal are arranged and the time marks are transformed into the angle domain to obtain the resampling signal. Speed-up and speed-down faulty bearing signals are employed to verify the validity of the proposed method, and experimental results show that the proposed method is effective for diagnosing faulty bearings. Furthermore, the traditional order tracking techniques are applied to the experimental bearing signals, and the results show that the proposed method produces higher accurate outcomes in less computation time. 展开更多
关键词 rolling element bearing fault diagnosis variable rotational speed equal division impulse-based resampling
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Non-probabilistic fuzzy reliability analysis of pile foundation stability by interval theory 被引量:1
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作者 曹文贵 张永杰 赵明华 《Journal of Central South University of Technology》 EI 2007年第6期864-869,共6页
Randomness and fuzziness are among the attributes of the influential factors for stability assessment of pile foundation. According to these two characteristics, the triangular fuzzy number analysis approach was intro... Randomness and fuzziness are among the attributes of the influential factors for stability assessment of pile foundation. According to these two characteristics, the triangular fuzzy number analysis approach was introduced to determine the probability-distributed function of mechanical parameters. Then the functional function of reliability analysis was constructed based on the study of bearing mechanism of pile foundation, and the way to calculate interval values of the functional function was developed by using improved interval-truncation approach and operation rules of interval numbers. Afterwards, the non-probabilistic fuzzy reliability analysis method was applied to assessing the pile foundation, from which a method was presented for non- probabilistic fuzzy reliability analysis of pile foundation stability by interval theory. Finally, the probability distribution curve of non- probabilistic fuzzy reliability indexes of practical pile foundation was concluded. Its failure possibility is 0.91%, which shows that the pile foundation is stable and reliable. 展开更多
关键词 pile foundation FUZZINESS interval theory interval-truncation approach non-probabilistic fuzzy reliability analysis
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Synthesis of Water Utilization System Using Concentration Interval Analysis Method ( Ⅰ ) Non-Mass-Transfer-Based Operation 被引量:3
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作者 刘永健 袁希钢 罗祎青 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2007年第3期361-368,共8页
A strategy for water and wastewater minimization is developed for continuous water utilization systems involving fixed flowrate(non-mass-transfer-based)operations,based on the fictitious operations that is introduced ... A strategy for water and wastewater minimization is developed for continuous water utilization systems involving fixed flowrate(non-mass-transfer-based)operations,based on the fictitious operations that is introduced to represent the water losing and/or generating operations and a modified concentration interval analysis(MCIA) technique.This strategy is a simple,nongraphical,and noniterative procedure and is suitable for the quick yields of targets and the identification of pinch point location.Moreover,on the basis of the target method,a heuristic-based approach is also presented to generate water utilization networks,which could be demonstrated to be optimum ones. The proposed approaches are illustrated with example problems. 展开更多
关键词 water minimization water utilization network targeting method concentration interval table
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Fractionally Spaced Equalization Algorithms in 60GHz Communication System 被引量:2
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作者 YUE Guangrong DONG Aixian +2 位作者 HONG Hao GUO Jianmei WANG Lei 《China Communications》 SCIE CSCD 2014年第6期23-31,共9页
Several fractionally spaced equalizers(FSE) which could be used in 60 GHz systems are presented in this paper. For 60 GHz systems, low-power equalization algorithms are favorable. We focus on FSE in both time domain(T... Several fractionally spaced equalizers(FSE) which could be used in 60 GHz systems are presented in this paper. For 60 GHz systems, low-power equalization algorithms are favorable. We focus on FSE in both time domain(TD) and frequency domain(FD) in order to meet different complexity requirements of 60 GHz systems. Compared with symbol spaced equalizer(SSE), FSE can relax the requirement of sampling synchronization hardware significantly. Extensive simulation results show that our equalization algorithms not only eliminate ISI efficiently, but are also robust to timing synchronization errors. 展开更多
关键词 fractionally spaced equalizers 60GHz timing synchronization lowcomplexity
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Reliability modeling of hydraulic system of drum shearer machine 被引量:8
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作者 SEYED HADI Hoseinie MOHAMMAD Ataie +1 位作者 REZA Khalookakaei UDAY Kumar 《Journal of Coal Science & Engineering(China)》 2011年第4期450-456,共7页
The hydraulic system plays an important role in supplying power and its transition to other working parts of a coal shearer machine. In this paper, the reliability of the hydraulic system of a drum shearer was analyze... The hydraulic system plays an important role in supplying power and its transition to other working parts of a coal shearer machine. In this paper, the reliability of the hydraulic system of a drum shearer was analyzed. A case study was done in the Tabas Coal Mine in Iran for failure data collection. The results of the statistical analysis show that the time between failures (TBF) data of this system followed the 3-parameters Weibull distribution. There is about a 54% chance that the hydraulic system of the drum shearer will not fail for the first 50 h of operation. The developed model shows that the reliability of the hydraulic system reduces to a zero value after approximately 1 650 hours of operation. The failure rate of this system decreases when time increases. Therefore, corrective maintenance (run-to-t^ailure) was selected as the best maintenance strategy for it. 展开更多
关键词 reliability modeling hydraulic system drum shearer maintenance strategy
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An Interval Maximum Entropy Method for Quadratic Programming Problem 被引量:3
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作者 RUI Wen-juan CAO De-xin SONG Xie-wu 《Journal of China University of Mining and Technology》 2005年第4期379-383,共5页
With the idea of maximum entropy function and penalty function methods, we transform the quadratic programming problem into an unconstrained differentiable optimization problem, discuss the interval extension of the m... With the idea of maximum entropy function and penalty function methods, we transform the quadratic programming problem into an unconstrained differentiable optimization problem, discuss the interval extension of the maximum entropy function, provide the region deletion test rules and design an interval maximum entropy algorithm for quadratic programming problem. The convergence of the method is proved and numerical results are presented. Both theoretical and numerical results show that the method is reliable and efficient. 展开更多
关键词 quadratic programming interval algorithm penalty function maximum entropy function
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Time between failures model and failure analysis of CNC system 被引量:4
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作者 张海波 贾亚洲 周广文 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2007年第2期197-201,共5页
To provide basis for the reliability improvement design of CNC system, the failure data of a type of CNC system in one year are collected under field conditions in workshops. The distribution model parameters of time ... To provide basis for the reliability improvement design of CNC system, the failure data of a type of CNC system in one year are collected under field conditions in workshops. The distribution model parameters of time between failures are estimated by least square method and hypothesis testing is done by d-test method. It is proved that the time between failures of the CNC system follows Weibull distribution and the system has entered into the wear-out failure period. The failure positions and failure causes are analyzed further to indicate the weak subsystems of the CNC system. It can be found that servo unit, electrical system, detecting unit and power supply are principal failure positions and the main failure cause is breakage of components. The corresponding improvement measures are put forward. The paper provides a reference to reliability design and analysis of CNC system for the manufacturer and has great guidance to using and maintaining CNC system for the user. 展开更多
关键词 CNC system failure analysis RELIABILITY Weibull distribution
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