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Search Results: 1 - 10 of 18580 matches for " 雷翔宇 "
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海上风电安装船结构强度分析
Structural Strength Analysis of Offshore Wind Turbine Installation Vessel
 [PDF]

陈科, 张喜秋, 翔宇
International Journal of Mechanics Research (IJM) , 2016, DOI: 10.12677/IJM.2016.51004
Abstract:
本文对一艘86.7 m海上风电安装船在作业过程中可能遇到环境载荷、设计载荷与功能载荷进行计算,并确定了包括自升固定,正常作业起吊与预压在内的8种计算工况。应用大型商用有限元计算软件ABAQUS进行全船有限元建模,并对8种典型工况下的船舶关键部位进行了结构强度分析,为海上风电安装船结构强度分析提供了可供参考的数值方法。
The environment load, design load and functional load acting on 86.7 m offshore wind turbine installation vessel were calculated in this paper, and 8 cases including jack-up fixing, lifting and pre-pressure of normal operation were determined. Commercial FEM software—ABAQUS was applied to model the whole hull and structural strength of key components of ship was analyzed. The numerical simulation process could be referred on design of offshore wind turbine installation vessel.
土壤水分入渗和再分布过程的信息熵演变特征 Information entropy evolution characteristics in soil water infiltration and redistribution processes
文娟,翔宇
- , 2016,
Abstract: 土壤水分运动是水文过程中的重要组成部分.熵概念将土壤水分运动的物理意义和统计学意义统一起来,并逐渐被应用于研究土壤水分的运动.但初始条件和边界条件对土壤水分运动熵演变的影响没有被充分考虑,简单地将熵演变看做单调增加过程.研究探讨了土壤水分的入渗过程和再分布过程在不同初始条件、边界条件影响下的信息熵演变特征.结果表明:1)不同土壤水分运动方式下,信息熵演变过程所呈现的特征曲线类型差异显著,初始含水率均匀、下边界无界的入渗过程和再分布过程,其熵演变分别以线性和对数形式单调增加.2)受初始条件和边界条件的影响,信息熵演变特征曲线的一致性和特征曲线类型都将发生改变,熵减小过程也会发生,进而导致系统的熵演变过程呈现多样化和复杂化.因此,运用熵理论研究土壤水分运动需要充分考虑水分运动方式、初始条件和边界条件对系统熵演变的综合影响.这样既能体现熵理论从统计学机理角度阐述土壤水分的动态变化,克服物理模型因测定水力学参数而大量耗时的不足,又能保证结果具有较高精度
植被根系对土体抗剪强度影响的试验研究
翔宇,杨平,王磊,稽晓
武汉理工大学学报 , 2012,
Abstract: ?以狗牙根为研究对象,分析了实验用土的液塑限、最大干密度、最优含水量;采用单因素法设计,分别使用竖直、水平、与水平方向成30°3种方式向试样中放置根丝进行gds三轴试验,绘制了试样的应力应变曲线和包络图,分析了狗牙根加筋土主应力差与轴向应变的关系。结果表明:素土及含根土围压?偏应力间呈线性关系;根丝植入对有效内摩擦角φ影响较小;根丝水平放置、倾斜放置时对试样粘聚力c影响较小,竖直放置时对?c?值有明显增强作用。这是由于水平和倾斜的放置方式,减少了样品的有效受剪区域。
液氢泄漏事故中氢气可燃云团的扩散规律研究
Investigation on the Hydrogen Flammable Cloud Dispersion in Liquid Hydrogen Leakage Accident

翔宇,蒲亮,,李强,厉彦忠
- , 2018, DOI: 10.7652/xjtuxb201809014
Abstract: 针对液氢生产、储存、运输过程中发生瞬时大流量泄漏的问题,对美国国家航空航天局进行的液氢泄放实验进行了数值模拟。采用非均相的混合模型,考虑气液相间速度滑移,对氢气、空气云团内部浓度、温度、密度等物理量的动态变化规律,以及可燃云团在竖直方向的扩散范围进行研究,揭示了可燃云团在开放空间的动态扩散行为,其扩散行为分为重气扩散、浮升扩散和被动扩散3个阶段。浮升扩散阶段为可燃云团扩散的最主要阶段,发生在停止泄放后大约8 s的很短时间内,氢气浓度急剧下降,云团快速脱离地表并升高至约30 m,在被动扩散阶段可燃云团扩散最慢,却占据大部分时间,即大约60 s的时间,此阶段可燃云团维持在约40 m的高空并且随风飘移。在风速较低的工况下,温差导致的低温氢气与空气的局部湍流相混合,是可燃云团扩散的主要动力。
Aiming at the problem of massive liquid hydrogen leakage in the processes of production, storage and transportation, a CFD model was built based on an assumed large scale leakage accident, and the liquid hydrogen leakage experiment of NASA(National Aeronautics and Space Administration) was simulated, where the non??homogeneous equilibrium model was adopted considering the slip velocity between liquid phase and vapor phase. The dispersion behavior of the flammable cloud was revealed based on the analyses on the concentration, temperature and density of H2/air mixture cloud. There are three phases in the flammable cloud dispersion, i.e., dense gas dispersion, drift dispersion and passive dispersion, among them the drift dispersion is the major phase occurring shortly (about 8 s) after the tapping of liquid hydrogen is shut off. At this time, the concentration of hydrogen decreases dramatically, and the cloud gets off the ground quickly and arises to a height of approximately 30 m. The hydrogen disperses most slowly in the passive dispersion phase, taking approximately 60 s, and the cloud is driven by the wind at a height of almost 40 m. At a relatively low wind speed, the major drive force of the dispersion is the local turbulent mixing caused by the great temperature difference between the cryogenic hydrogen gas and air
吐鲁番地区11个葡萄品种的设施栽培特性分析
Cultivation characteristics of eleven grape cultivars in solar greenhouse in Turpan

吴久赟,翔宇,,,
- , 2018,
Abstract: 【目的】筛选适宜吐鲁番地区日光温室栽培的早熟葡萄品种,以满足吐鲁番地区发展设施葡萄栽培的需求。【方法】2013-2016年,在设施栽培条件下,系统研究了吐鲁番地区引种的‘京蜜’‘京香玉’‘京翠’‘夏至红’‘洛浦早生’‘6-12’‘早黑宝’‘早康宝’‘绿宝石’‘金田玫瑰’‘金田蜜’等11个葡萄品种的物候期、结果特性、果穗和果粒的品质性状及栽培适应性,利用主成分分析法评价各品种的综合表现。【结果】在吐鲁番地区日光温室栽培条件下, 11个葡萄品种均为早熟品种,但各品种在物候期、生长结果习性、葡萄果实性状等方面存在差异。‘6-12’‘洛浦早生’‘夏至红’从萌芽到浆果成熟时间小于100 d,为极早熟品种;各品种萌芽率为44.00%~71.90%,其中以‘绿宝石’最高,‘早康宝’最低,差异极显著;结果系数为0.10~0.94,‘京翠’最高,‘绿宝石’最低,差异极显著;引种成活率均较高,为85.71%~100.00%,‘6-12’最低。‘早黑宝’穗质量最大,极显著大于其他10个品种;‘早康宝’‘金田蜜’粒质量较大,显著或极显著大于其他品种。11个品种果粒的可溶性固形物含量为13.2%~19.0%,其中以‘金田玫瑰’最高,‘绿宝石’最低,极显著低于其他品种。主成分分析表明, 11个品种综合得分排序为:‘早黑宝’>‘金田玫瑰’>‘早康宝’>‘金田蜜’>‘京翠’>‘京蜜’>‘京香玉’>‘夏至红’>‘6-12’>‘洛浦早生’>‘绿宝石’。【结论】‘早黑宝’‘金田玫瑰’‘早康宝’‘金田蜜’‘京翠’‘京蜜’‘京香玉’等品种适宜吐鲁番地区设施栽培,‘夏至红’‘6-12’‘洛浦早生’‘绿宝石’等品种的表现不如原育种地,且生长势过强,不适宜吐鲁番地区设施栽培。
【Objective】The objective of this study was to select suitable early maturing grape cultivars in solar greenhouse in Turpan to meet the requirements of grape cultivation in greenhouse.【Method】Eleven grape cultivars including ‘Jingmi’,‘Jingxiangyu’,‘Jingcui’,‘Xiazhihong’,‘Luopuzaosheng’,‘6-12’,‘Zaoheibao’,‘Zaokangbao’,‘Lvbaoshi’,‘Jintianmeigui’ and ‘Jintianmi’ were selected for cultivation from 2013 to 2016. The primary phenophase,growth and fruiting habits,quality characters of bunch and berry,and adaptability in solar greenhouse in Turpan were systematically studied and the comprehensive scores were obtained using the principal component analysis method.【Result】 In solar greenhouse cultivation in Turpan,all the eleven grape cultivars were early maturing varieties,with differences in phonological phase, growth and fruiting habits and grape fruit characters. The ‘6-12’‘Luopuzaosheng’ and ‘Xiazhihong’ with less than 100 d from bud to berry ripe were very early maturing cultivars. The germination rates were 44.00%-71.90% with the highest in ‘Lvbaoshi’, the lowest in ‘Zaokangbao’, and significant difference among varieties. The coefficients were 0.10-0.94,with the highest in ‘Jingcui’, the lowest in ‘Lvbaoshi’, and significant differences among varieties. Introduction survival rates were 85.71%-100.00%,with the lowest in ‘6-12’.‘Zaoheibao’ had significantly higher bunch weight than other cultivars.‘Zaokangbao’ and ‘Jintianmi’ had significantly higher berry weight than other cultivars.Soluble solid contents were 13.2%-19.0% with the highest in ‘Jintianmeigui’.‘Lvbaoshi’ was the lowest,and significantly lower than other cultivars.The principal component analysis showed that the comprehensive scores were in the order of ‘Zaoheibao’>‘Jintianmeigui’>‘Zaokangbao’>‘Jintianmi’>‘Jingcui’>‘Jingmi’>‘Jingxiangyu’>‘Xiazhihong’>‘6-1
密闭小空间内CO净化方法探究
佘阳梓,蒋彦龙,李俊,,翔宇
煤炭学报 , 2011,
Abstract: 对人体在密闭空间中产生CO的特性进行了试验研究,并考察了人是否抽烟以及人的年龄对CO产生量的影响。在研究国内外净化处理CO方法的基础上,对霍加拉特催化剂在模拟工况和真人工况下净化CO的性能进行了试验研究。研究结果表明:人体在密闭空间中产生CO的量与人是否抽烟、年龄以及所处环境密切相关;霍加拉特催化剂在常温下可有效催化燃烧CO,其净化CO速率与CO浓度有关;霍加拉特催化剂在净化人体代谢产生的CO时,受其它代谢气体的干扰,其净化CO的能力受到抑制,不能有效催化人体代谢积累的CO。
图像记忆对动态搜索的影响
李彬寅,许百华,翔宇,盛峰,婧宇
心理学报 , 2010,
Abstract: ?通过三个实验考察了图像记忆对动态搜索的影响。实验1对静态和限制动态条件下的搜索效率进行比较,以进一步检验视觉搜索的无记忆模型;实验2通过比较限制动态和动态条件下的搜索效率,考察了图像记忆在动态搜索中对注意的引导作用;实验3考察了视觉搜索中新客体优势对搜索效率的影响。结果发现:(1)在静态和动态条件下,视觉搜索中均有记忆参与,但两种条件下的搜索模式不同;(2)在动态搜索中,每当画面变化时被试可依据图像记忆将注意指向可能出现目标的新位置,从而提高搜索效率;(3)视觉搜索中新客体优势不显著,这提示搜索过程中的注意指向主要受图像记忆的引导。
考虑井壁稳定及增产效果的页岩气水平井段方位优化方法
翔宇,吴昊,殷晟,夏宏泉,陈平,,覃勇
天然气工业 , 2014,
Abstract: ?针对页岩气水平井钻井过程中常见的井壁失稳垮塌问题,为提高井壁稳定性和为后期压裂增产提供良好的条件,分析了层理面产状和地应力类型对井壁稳定性的影响,并对压裂缝与水平井段夹角,以及与水平气井产量之间的关系进行了研究,进而提出了通过对水平井段方位的优化来提高井壁稳定性和改善压裂增产效果的技术思路:利用川南地区页岩气井的测井、地应力及岩石力学资料,通过页岩层理面破坏模型及本体破坏模型分析计算出不同方位角下的井壁坍塌压力,找出井壁稳定性最好时井眼与层理面产状和地应力类型之间的关系;通过对压裂缝延伸方向的分析,得出了压裂缝的一般延伸规律;利用产能公式计算裂缝与水平井段呈不同夹角时的产量,以此获得了裂缝与水平井段夹角影响压裂效果的规律。还以川南地区的w201-h3井为例,充分考虑页岩气井壁稳定及增产效果,提出了有针对性的水平井段方位优化设计,使该井能在保持良好井壁稳定性的前提下获得良好的增产效果。
不同品种猕猴桃果实的品质及抗氧化活性
赵金梅,高贵田,薛敏,耿鹏飞,翔宇,谷留杰,玉山
食品科学 , 2014,
Abstract: ?测定10种猕猴桃vc、可溶性固形物、可滴定酸、总酚、蛋白质和氨基酸含量,并据此进行聚类分析,通过比较其清除dpph自由基的能力,探究抗氧化活性与vc、总酚含量的相关性。结果表明:猕猴桃成熟果实含可溶性固形物含量12.27%~20.37%、可滴定酸含量0.85%~1.77%、vc含量54.86~159.08mg/100g、蛋白质含量0.86%~1.85%、总氨基酸含量10.74~17.94mg/g、总酚含量63.71~152.46mg/100g、对dpph自由基的清除率为13.75%~68.34%。6种营养成分在不同猕猴桃品种之间具有一定差异性,其中翠香、红阳、金桃和华优的可溶性固形物、vc和总酚含量均较高,而黄金果和海沃德的vc、总酚含量较低,其他品种的营养成分指标基本处于中等水平,华优的vc含量(159.08mg/100g)、总酚含量(152.46mg/100g)及dpph自由基清除率(68.34%)最高,是营养价值最高的品种之一。猕猴桃的抗氧化能力与其中的vc和总酚含量之间呈现较高相关性,表明猕猴桃的抗氧化作用与其中所含的vc和酚类物质关系密切。
高等理工科院校应注重培养外向型人才
Science and Engineering Colleges Should Pay Attention to the Cultivation of Extraverted Talents
 [PDF]

聂仁仕,翔宇
Advances in Education (AE) , 2012, DOI: 10.12677/ae.2012.22005
Abstract:

高等教育改革已成为近十年来高等教育界和社会关注的热门话题。由于外向型和内向型性格特征与其生长的环境密不可分,从普通高等理工科学生的培养历程出发,详细分析了每个学年阶段学生常见的心理变化状况、性格特征以及引起性格变化的原因。目前,高等理工科院校教师容易忽视学生的性格培养,任其性格自由发展的结果便是走入越来越内向的恶性循环。然后提出了培养外向型人才的必要性,即为了培养综合素质高、社会适应能力强的毕业生。最后,讨论了外向型人才的具体培养方法,强调了教师在培养过程中应树立的思想观念和发挥的引导作用。笔者提出的观点和方法,可供同行参考。
Higher education reform has become the hot topic in higher education circles and society nearly 10 years. Extroverted and introverted personality traits are inseparable with the growth environment, so we analyzed detailedly the usual psychological change status, the usual personality traits and the reasons of causing personality changes in every schooling year. At present, the cultivation of personality is usually ignored by the teachers of science and engineering colleges, so the free development of personality for students would make them more and more introverted and put their into a vicious cycle. Then we put forward the necessity of the cultivation of extraverted talents, that is, the goal of education is to cultivate the graduates with higher comprehensive quality and strong social adaptation ability. At the end, we discussed the method to cultivate the extraverted talents and emphasized the guidance role and ideas of teacher in the cultivation. The viewpoints and methods put forward by us can give the references for other teachers and readers.

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