共查询到19条相似文献,搜索用时 250 毫秒
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就在李娜为中国乃至亚洲赢得第一座网球大满贯单打冠军奖杯后的一年,中国女子高尔夫也迎来了历史性的突破。6月17日,年仅22岁的冯珊珊在纽约蚱蜢山乡村俱乐部进行的LPGA锦标赛上成就了中国高尔夫史上的首座大满贯。只不过,与李娜夺冠后在国内引发巨夫轰动不同,冯珊珊的登顶却并没有如预料的那样在全民中火上一把。 相似文献
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上海是一座对体育运动充满热情的城市,举办过许多大型体育比赛,比如F1大赛,上海网球大师赛等而现在,这里又有了另一场世界级的比赛——BMW大师赛。10月25-28日,首届BMW大师赛在上海美兰湖高尔夫俱乐部火爆上演,世界排名前五位的球员中有4人参与争夺,堪称今年亚洲高尔夫赛事最强大的阵容。最终,瑞典人彼得·汉森赢得了个人第六个,也是最重要的一个冠军。中国选手之中,梁文冲表现得最为出色,他最后一轮打出68杆,攀升到了并列第20位。而他的同胞吴阿顺只是落后一杆,获得并列第25名。 相似文献
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有着"中国钢板材行业高尔夫盛会"之美誉的2012腾麒杯高尔夫业余精英赛9月18日在上海旭宝高尔夫俱乐部进行。即便这只是一场业余性质的赛事,但却吸引到了140名来自各行各业的精英参与其中,就连现女子世界第一曾雅妮的爸爸曾茂炘也亲临现场。"腾麒杯"是由腾麒机械制造有限公司董事长周木南于2007年创立的大型业余高尔夫赛事,今年已走入第六个年头。或许很多人不明白,为什么一场业余性质的赛事会如此受到重视?这一切皆出自于爱,一份对高尔夫的爱。 相似文献
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<正>1月10日,耐克高尔夫在东莞观澜湖球场召开发布会,正式推出引起高尔夫业界广泛关注的最新力作一一VR_S Covert全球首创极速凹背一号开球木杆。作为高尔夫品牌的创新龙头,耐克高尔夫一直将创新这一理念根深蒂固地植入"品牌DNA"中。为此《航空港》专访了 相似文献
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浅析公共娱乐场所消防安全现状及对策 总被引:1,自引:0,他引:1
王春梅 《沈阳航空工业学院学报》2005,22(6):182-183
近年来,为了满足广大人民群众对精神文化生括的需求,影剧院、录像厅、歌舞厅、卡拉ok厅、音乐茶座、夜总会等各种公共娱乐场所层出不穷。但是,全国公共娱乐场所的火灾形势一直很严峻,引起了各级领导和社会各界的广泛关注。对目前公共娱乐场所的消防安全问题进行安全探讨,并就如何进一步加强公共娱乐场所消防安全工作,提出解决对策。 相似文献
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Industrial battery market segments generally fall into two major categories--traction batteries, also called motive power batteries; and stationary batteries, also referred to as standby power batteries. The major industrial battery subcategories are discussed. Industrial trucks and rail and mine vehicles represent two major subcategories of motive power batteries. Industrial trucks include forklifts, automated guided vehicles (AGVs), various types of towing vehicles, floor cleaning equipment and so forth. Battery-powered rail and mine vehicles are used in mines where gas is present that could be ignited by spark ignition engines. Locomotive starting batteries and railcar emergency power batteries are also included in the second subcategory. The distinction is beginning to blur between valve-regulated industrial batteries and golf cart or marine batteries. Both industrial and SLI(starting/lighting/ignition)-derivative batteries are competing for markets in the future. The future trends in industrial battery production in Japan, USA and Europe are discussed 相似文献
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肺癌是一种高致死率的疾病,具有高度的异质性和可塑性。基于病理学分型,肺癌可分为小细胞肺癌和非小细胞肺癌,后者又可细分为腺癌,鳞癌和大细胞癌。临床上可观察到同一个肿瘤内部混合腺癌和鳞癌(腺鳞癌),或小细胞肺癌混合腺癌或鳞癌(混合型小细胞肺癌)。其中,腺鳞癌在临床上占非小细胞肺癌的 4%~10%。近几年越来越多的临床案例报道,肺腺癌患者经过化疗、靶向治疗或免疫治疗,肿瘤类型会从腺癌转变成鳞癌,并表现出耐药性。动物模型的研究发现, 肝激酶 B1(Lkb1)缺失会促进小鼠肺腺癌向鳞癌转化,而腺鳞癌是转化过程的中间态。从细胞起源来看,Club 细胞和 AT2 (Alveolar Epithelial Type 2)来源的肺腺癌可以转化成鳞癌。从分子机制来看,肺腺癌向鳞癌转化的过程中,胞外基质重塑以及代谢重编程会导致细胞氧化应激异常,使得活性氧(Reactive Oxygen Species,ROS)水平急剧上升并诱导 p63 上调,最终导致腺鳞癌转化并伴随肿瘤耐药。本综述将总结近年来肺腺鳞癌转化领域的进展并阐述其与耐药的关系,以期为深入理解临床肺癌的可塑性奠定理论基础。 相似文献
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数控电解预加工是组合电加工技术中不可或缺的关键工艺,本文专题论述了三元流闭式叶轮数控电解预加工中阴极及其运动轨迹设计等关键技术。提出了采用多个阴极分区域加工流道的方法,利用先层切再叠加的方法将三维问题简化为二维问题处理而实现阴极加工型面的数值求解。在完成阴极结构优化设计专用工装夹具设计和数控加工程序编制的基础上,以某型三元流闭式叶轮为研究对象进行了加工工艺试验,并加工了符合设计要求的三元流闭式叶轮。试验研究表明,采取数控电解预加工工艺方案能够满足实际生产要求,可提高效率40%,降低电火花加工的电极损耗50%。 相似文献
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An inverse filter, contained in a recently published paper by Senmoto and Childers, is improved by the application of a shaping function derived by Turin in an earlier paper. 相似文献
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A model of a distributed target as a collection of independent, Poisson distributed point scatterers or scattering centers in a range-velocity target space is introduced and is characterized by a deterministic function called the ?scatterer density function.? This function is the density of the point scatterers in the range-velocity space and can be estimated in a relatively straightforward manner by any radar having adequate resolution in both range and velocity and no ambiguities in the region occupied by the distributed target. The use of the random signal radar with a correlator receiver is considered here and the statistical properties of the correlator output, when the return signal is from a distributed target, are derived. It is shown that the spectral density is simply related to the scatterer density function. The technique is illustrated by an example in which the target is a tornado modeled as a cylinder with constant angular velocity. The example suggests that is a possible to remotely estimate the radar cross section per unit volume as a function of distance from the center of the tornado. 相似文献
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Vahé Petrosian 《Space Science Reviews》2012,173(1-4):535-556
The subject of this paper is stochastic acceleration by plasma turbulence, a process akin to the original model proposed by Fermi. We review the relative merits of different acceleration models, in particular the so called first order Fermi acceleration by shocks and second order Fermi by stochastic processes, and point out that plasma waves or turbulence play an important role in all mechanisms of acceleration. Thus, stochastic acceleration by turbulence is active in most situations. We also show that it is the most efficient mechanism of acceleration of relatively cool non relativistic thermal background magnetized plasma particles. In addition, it can preferentially accelerate electrons relative to protons as is needed in many astrophysical radiating sources, where usually there are no indications of presence of shocks. We also point out that a hybrid acceleration mechanism consisting of initial acceleration by turbulence of background particles followed by a second stage acceleration by a shock has many attractive features. It is demonstrated that the above scenarios can account for many signatures of the accelerated electrons, protons and other ions, in particular 3He and 4He, seen directly as Solar Energetic Particles and through the radiation they produce in solar flares. 相似文献