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Search Results: 1 - 10 of 75996 matches for " 节凤丽 "
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透平叶片振动激励系统设计与建模仿真
,王维民,邵星,屈维,张旭龙
- , 2018, DOI: 10.13543/j.bhxbzr.2018.02.010
Abstract: 为了监测预警叶片失稳颤振,防止因叶片颤振导致的事故发生,研究并设计出基于电磁激振力的叶片失稳颤振现象模拟装置。运用ANSYS进行电磁场分析,并以得到的最大电磁激振力为优化目标对该结构进行优化;然后通过分析叶片经过单组磁极时的激振力变化过程,对叶片进行模态和谐响应分析模拟。研究结果表明,本文所设计的激励装置可以控制产生不同的电磁激振力,从而能较好地模拟叶片的失稳颤振过程。
Abstract:In order to monitor the instability flutter of a warning blade and prevent accidents caused by the blade flutter, an experimental device to model the flutter instability of a blade resulting from electromagnetic forces has been designed and studied. First, the electromagnetic field was analyzed by ANSYS. The optimal electromagnetic force was used as the optimization objective to optimize the structure. Then by analyzing the change of the exciting force when the blade passes through a single set of magnetic poles, the behavior of the blade was simulated and modeled by harmonic response analysis. The results show that the excitation device developed in this work can control the different electromagnetic forces and thus provide a realistic simulation of the vane instability flutter process.
环境污染应急管理指挥系统的分析与构建—以典型煤化工产业集聚区重大环境污染事件为例
Analysis and Construction of Emergency Commanding System for Environmental Pollution
 [PDF]

, 寇子明
Computer Science and Application (CSA) , 2012, DOI: 10.12677/CSA.2012.22012
Abstract: 本文通过对典型煤化工产业集聚区的特性及现有应急资源与管理现状的分析,构建了煤化工区域重大环境污染事件多级应急管理指挥系统,建立了多级指挥系统的组织架构、信息传递网络,并分析了系统的应急响应流程,对提高煤化工区域及类似化工区域应急指挥的效率和效能具有重大意义。
This paper analyzes the characteristic of the typical coal chemical industry area. The current emergency re- sources and the management situation are analyzed at the same time. A multilevel emergency commanding system for serious environmental pollution incident in the coal chemical industry zone is constructed based on these analyzed re- sults. In this system, a multilevel organization structure is built, and a network is built to transfer information. An emer- gency response flow of system is proposed subsequently. This system is significant in improving the efficiency of emergency commanding in the coal chemical industry area.
绿洲棉田UV-B辐射增强对棉花生长发育的影响
The Effect of Enhanced UV-B Radiation on the Growth of Cotton in Oasis Cotton Field
 [PDF]

王进,, 杨明
Hans Journal of Agricultural Sciences (HJAS) , 2015, DOI: 10.12677/HJAS.2015.53017
Abstract:
在大田试验条件下,研究UV-B辐射增强对棉花生长发育的影响。通过人工增加对棉花UV-B辐射,设置4个处理,每个处理的辐射剂量分别为0 W/m2 (R0)、0.5 W/m2 (R1)、1.0 W/m2 (R2) 和1.5 W/m2 (R3),研究了UV-B辐射增强对棉花株高、茎粗、叶面积、叶片表观伤害、产量和品质的影响。结果表明:随着UV-B辐射增强,R1、R2和R3处理组的株高、茎粗、叶面积分别与对照达到了极显著水平(P < 0.01),R3与各个处理之间差异均达到了极显著水平(P < 0.01);棉花叶片可见伤害症状越来越严重,各个处理的棉花产量和品质显著低于对照。UV-B辐射增强使棉花形态、产量和品质之间存在密切的直接关系,UV-B辐射强度越大对棉花的影响就越大。
The objectives of this research were to study the influences of enhanced ultraviolet radiation (UV-B, 280 - 320 nm) on physiological indicator, yield and quality of cotton. We set four treatments of 0 w/m2 (R0), 0.5w/m2 (R1), 1w/m2 (R2), 1.5 w/m2 (R3) by increasing artificial UV-B radiation and studied the effect of enhanced Ultraviolet-B radiation on plant height, stem diameter, leaf area index (LAI), apparent injure in leaf, yield and quality of cotton. The results showed that the plant height, stem diameter and LAI had significant correlation with the increasing Ultraviolet- B radiation (P < 0.01), and the difference between R3 and other treatments also had statistically significance (P < 0.01). The apparent injury in leaf of cotton became more serious and the quantity and quality was also at the lowest level as followed. The relationship between UV-B radiation and cotton growth was closer. The higher intensity of UV-B radiation would have more negative effects on cotton growth.
代币强化行为疗法对社区女性精神病人的康复研究
The Effects of Token Therapy on the Rehabilitation of the Female Schizophrenic Patients in the Community
 [PDF]

金慈
Nursing Science (NS) , 2015, DOI: 10.12677/NS.2015.42004
Abstract:
目的:研究代币强化行为疗法对社区女性精神病人的康复作用。方法:把100例女性精神病康复病人随机分为研究组和对照组,对研究组病人的良性行为采用“代币法”进行阳性强化训练和行为塑造,与对照组作比较,以精神病人护士观察量表(NOSIE)、精神病人康复疗效评定量表(IPROS)来评价强化的效果。结果:代币强化行为疗法对减少女性病人的病态体验、克服焦虑、抑郁、恐惧情绪,改善和强化病人适应环境的能力,恢复和重建人际交往有良好的作用。结论:代币强化行为疗法能塑造女性病人良性行为,促进病人早日康复,回归社区、回归家庭。利用有限的卫生资源,达到最大可能的社区功能水平。
Objective: To investigate the effects of token therapy on the rehabilitation of the female schizoph-renic patients in the community. Methods: 100 female patients with schizophrenia were randomly divided into the research group and the control group (n = 50, per group). The benign behavior adopted the positive intensive training and the behavior shaping with token therapy in patients of the study group. Compared with the control group, the strengthening effects were evaluated by the Nurses' Observation Scale for Inpatient Evaluation (NOSIE) and the Impatient Psychiatric Rehabil-itation Outcome Scale (IPROS). Results: Token therapy can reduce the pathological experience, overcome anxiety, depression and fear, improve and enhance the adaptive capacity of environment in the female schizophrenic patients. It also has a good effect in the recovery and reconstruction of interpersonal communication. Conclusions: Token therapy can shape benign behavior, facilitate the patients to recover and return the community and home. The optimal social functions of community could be developed by making full use of the limited sanitary resource in the female schizophrenic patients.
钢筋混凝土构件试验的动态数值模拟方法

力学与实践 , 1998, DOI: 10.6052/1000-0992-1999-294
Abstract: 本文提供由计算机图形仿真系统构成的模拟试验环境.其主要特色是1.采用裂纹扩展的分形弯折模型描述裂纹的动态扩展,裂纹位置采用随机处理技术,使单元裂纹更接近实际;2.采用动画显示技术,模拟钢筋混凝土构件从开始加载到变形破坏的试验全过程;3.用户可以根据需要选取任意截面,显示该截面的应力应变曲线.
事业单位会计制度改革探讨

财会月刊 , 2008,
Abstract: 本文基于财政部发布的《事业单位会计制度》,对我国事业单位的会计核算进行了分析,阐述了新形势下事业单位会计制度改革的主要内容和具体意见。【关键词】事业单位固定资产会计报表格式无形资产事业单位是我国国民经济的重要组成部分,为了规范事业单位的会计核算,财政部1997年7月颁发了《事业单位会计制度》,并在全国事业单位范围内实施。本文试就该制度有关问题作如下探讨。
大鼠衰老过程中特定脑区c-fos、c-jun、bcl-2、bax基因表达的变化

南方医科大学学报 , 2010,
Abstract:
跟踪学科前沿,组织优秀稿件——《应用生态学报》组稿实践

中国科技期刊研究 , 2013,
Abstract: 总结了《应用生态学报》为提高期刊学术质量在组稿方面采取的措施:跟踪学科前沿,围绕国家重大项目、重点科研课题组稿,挖掘有潜力的作者约稿,组织学术会议专栏,追踪热点问题自拟选题组稿等。最后,介绍了组织稿件的质量控制和效果。
玫瑰花粉的理化性质研究

- , 2015, DOI: 10.13982/j.mfst.1673-9078.2015.9.015
Abstract: 本文利用激光粒度分析、扫描电子显微镜(SEM)、红外光谱、Zeta电位及浊度等多种分析实验技术,对玫瑰花超微粉和细粉的粒径分布、比表面积、微观形貌、化学官能团吸收强度比、分散水溶液的稳定性等物化性质进行了对比研究,并比较了其持水、持油力和溶解性等性质差异。结果表明:玫瑰花超微粉大部分组织结构和细胞壁较细粉破碎严重,各官能团吸收强度相对含量比均高于玫瑰花细粉。玫瑰花超微粉比细粉在水溶液中分散稳定性更好;随温度升高,两种玫瑰花粉分散水溶液的浊度均呈先下降后上升趋势,80 ℃左右降至最低;超微粉较细粉的分散水溶液稳定性受温度影响小;沸水浴后,超微粉抵抗介质离子强度变化的能力明显优于细粉;与玫瑰花细粉相比,超微粉持水、持油能力降低,而溶解性升高。
Differences between rose superfine powder (RSFP) and rose fine powder (RFP) in terms of particle size distribution, specific surface area, micro-morphology, absorption intensity of chemical functional groups, and the stability of their dispersed aqueous solution were investigated using several techniques, including laser diffraction particle size analysis, scanning electron microscopy (SEM), infrared spectroscopy (IR), Zeta potential analysis, and turbidity analysis. In addition, differences in water holding capacity (WHC), oil holding capacity (OHC), and solubility between RSFP and RFP were also studied. The results showed that most tissue structures and cell walls were broken down in RSFP. The relative absorption intensity of the functional groups in IR was higher in RSFP than in RFP. Furthermore, the dispersed aqueous solution of RSFP was more stable compared to that of RFP. As the temperature increased, the turbidity values of both dispersed aqueous solutions showed a decreasing trend followed by an increasing trend and reached the lowest value at 80 ℃. Temperature had a small effect on the stability of the RSFP dispersed aqueous solution. Moreover, although the turbidity of the dispersed aqueous solution of RSFP and RFP was affected by the ionic strength, RSFP was more resistant to intensity changes in buffer ionic strength than was RFP after being subjected to a boiling water bath. The WHC and OHC of RSFP decreased compared to those of RFP, while the solubility increased.
桩基施工及基坑开挖对邻近建筑物联合影响研究
徐长,金飚,,陈其志
岩石工程学报 , 2013,
Abstract: 近年来城市中的工程建设对周围建筑物的影响越发突出,以一个相邻基坑的建筑物为背景,从三方面分析了已有建筑物基础产生位移的影响因素,并和现场实测数据做了对比。首先采用理论公式分析了桩基挤土效应对房屋基础位移的影响,其次采用有限元plaxis模拟了基坑开挖对房屋基础不均匀沉降影响程度,最后分析了相邻建筑物相互影响所导致的基础不均匀沉降情况。分析结果表明,建筑物基础因土体固结所产生的不均匀沉降十分显著,而相邻工程施工对其影响较小。对于类似的工程问题,需要全面研究各种因素对已有建筑物的影响,不能简单地将存在的建筑物问题归结为相邻工程的施工导致。希望对以后类似工程予以一定借鉴。
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