|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Effects of Alloying Elements on the Microstructures and Mechanical Properties of Heavy Section Ductile Cast Iron显示文摘重节的当演员组微观结构 andmechanical 性质上的 alloying 元素的效果可锻的生铁被调查开发有高力量和最终的张力的力量的高 ductility.Measurements 的出版社 diematerial , 0.2%proof 力量,延伸和 unnotched Charpy 冲击能在 0.25~0.75 wt 宠物 range.Hardness 以内表现为 alloyamounts 的功能在瞬间, Cu ,改变的 Ni 和 Cr 的破张力的 specimens.Thesmall 增加上被测量当演员组 | G.S.Cho K.H.Choe K.W.Lee A.Ikenaga | 2007 | Journal of Materials Science & Technology2007，23，1： | 14 |
| 2 | 高温环境中训练和比赛的共识性建议显示文摘高温环境中运动会引起体温调节和其它生理压力,继而可导致耐力运动能力的损害。本共识性声明的目的是提供最新的建议以使热环境中体育活动时的运动能力最优化。可用于降低热应激压力和优化运动能力的最重要干预方式是热习服,其应包括1~2周以上反复的运动—高温环境暴露。此外,运动员应在正常水合状态下开始比赛和训练,并将运动中的脱水最小化。随着商用降温系统(如降温背心)的发展,在高温环境中训练或比赛前,运动员可以采取降温策略来促进热的散发或提高蓄热能力。而且,赛事组织者应该设计大面积的遮阳区域,并提供降温和补水设施,按照最小化运动员的健康风险来安排赛事,尤其是在大众参与的赛事中及一年之中炎热天气开始之初。以最近的2008年奥运会和2014年国际足联世界杯为例,当比赛在高温环境中举行时,赛事主管机构应考虑在比赛中或比赛之间允许额外的(或更长的)恢复期以提供补水和降温的时机。 | Sébastien Racinais Juan-Manuel Alonso Aaron J.Coutts Andreas D.Flouris Olivier Girard José González -Alonso Christophe Hausswirth Ollie Jay Jason K.W.Lee Nigel Mitchell George P.Nassis Lars Nybo Babette M.Pluim Bart Roelands Michael N.Sawka Jonathan Wingo Julien D.Périard. 徐金成 高璨 赵杰修 | 2016 | 中国运动医学杂志2016，35，2： | 4 |
| 3 | Study of the Interface between Steel Insert and Aluminum Casting in EPC显示文摘为钢的有效表面处理方法与艾尔一起插入 composited 在钢之间的过程和结合的接口插入的由可耗尽的模式扔的碱金属(EPC ) 和艾尔碱金属被调查。钢上的 Zn plating 插入,这被发现在改进在钢之间的结合的性质上是有效的插入,在 EPC process.Zn 的艾尔碱金属被认为支持扩散层的形成。但是 Zn 的几乎没有内容在是由艾尔,组成的钢 insert.A 扩散层上的 plated 的边界被观察 Si 和 Fe 在 insert/alloy 接口被形成,它的坚硬比钢高是插入当然的事艾尔碱金属。这层结果是 Al-Si-Fe 系统的金属间化合的混合物。更高的流温度支持了 Fe 的散开进艾尔合金,因此在金属间化合的层的 Fe 内容在更高倒温度增加了。接近钢的层由于应用压力消失了。 | K.H.Choe K.S.Park B.H.Kang G.S.Cho K.Y.Kim K.W.Lee M.H.Kim A.Ikenaga S.Koroyasu | 2008 | Journal of Materials Science & Technology2008，24，1： | 2 |
| 4 | 钙钛矿La0.8Ca0.2MnO3多晶样品的制备及低温磁学特性显示文摘我们利用固相反应法制备了粉末状La0.8Ca0.2MnO3样品,其空间群为pnma,样品中存在超顺磁性粒子,其截止态和超顺磁态的转变温度为185K,从dσ/dT的负峰得到铁磁-顺磁相变居里温度为210K,在顺磁领域线性拟合而得到顺磁居里温度为216.4K,分子式有效磁矩为6.25μB,低温领域磁化曲线服从布洛赫T32定律,其自旋波劲度系数为49.2meV2. | 姜炳植 S.G.Min S.C.Yu K.W.Lee | 2012 | 低温物理学报2012，34，4： | 0 |
| 5 | Effect of Applied Pressure on the Joining of Combustion Synthesized Ni_3Al Intermetallics with Al Alloy显示文摘我们集中于与 Ni-Al 金属间化合的混合物扔合金由的 ligth 重量的表面加强在原处改进非铁的扔的表面性质的燃烧反应部件。在我们的以前的工作,元素的 Ni 和艾尔粉末紧缩的绿色被 SHS (自我繁殖的高温度合成) 反应到形式 Ni3Al 金属间化合的化合物有熔融的艾尔合金并且同时的热的反应与艾尔扔结合了合金。但是象微小的裂缝和孔那样的一些缺点在反应协议被仍然是。我们因此使用了压力阻止热裂缝并且与液体艾尔合金充满毛孔由压榨扔过程。压缩艾尔合金与 Ni3Al 金属间化合的混合物结合了是 sectioned 并且由光显微镜学和扫描电子显微镜学(SEM ) 观察了。在结合的接口附近并且在反应协议形成的 intermetallics 的 stoichiometric 作文被散光谱学(版本) 和电子探查的精力识别微分析(EPMA ).Si 富人层被艾尔的顺序的团结在结合的接口附近在艾尔合金方面上形成合金。在反应 Ni3Al 协议观察的孔与液体艾尔合金被充满。从熔融的艾尔合金的 Si 粒子在反应 Ni3Al 金属间化合的协议的毛孔被检测。扔合金和 Ni3Al 金属间化合的化合物的艾尔被把压力用于液体艾尔合金很很熟加入。 | G.S.Cho J.H.Yang K.H.Choe K.W.Lee A.Ikenaga | 2008 | Journal of Materials Science & Technology2008，24，1： | 0 |
| 6 | Effect of Vibrational Modes on Sand Pressure and Pattern Deformation in the EPC Process显示文摘During the EPC (expendable pattern casting) process, one of the essential requirements is to prevent pattern distortion during sand filling and compaction. A new method which vibrates the system in a two-dimensional circular mode has been applied to the EPC process. The molding properties of unbonded sand obtained by this new vibration mode are investigated and compared with those in the one-dimensional vertical mode. For adequate compaction of sand, the circular vibration mode is more effective than the vertical mode. Sand became more fluidized by the circular vibration and the particle pressure coefficient was close to unity. The particle pressure coefficient, which is defined as the ratio of horizontal to vertical sand pressure, is responsible for the effectiveness of sand filling. | A.Ikenaga G.S.Cho K.H.Choe K.W.Lee | 2004 | Journal of Materials Science & Technology2004，20，3： | 0 |
| 7 | Elevated brain temperature under severe heat exposure impairs cortical motor activity and executive function显示文摘Background:Excessive heat exposure can lead to hyperthermia in humans,which impairs physical performance and disrupts cognitive function.While heat is a known physiological stressor,it is unclear how severe heat stress affects brain physiology and function.Methods:Eleven healthy participants were subjected to heat stress from prolonged exercise or warm water immersion until their rectal temperatures(T_(re))attained 39.5℃,inducing exertional or passive hyperthermia,respectively.In a separate trial,blended ice was ingested before and during exercise as a cooling strategy.Data were compared to a control condition with seated rest(normothermic).Brain temperature(T_(br)),cerebral perfusion,and task-based brain activity were assessed using magnetic resonance imaging techniques.Results:T_(br)in motor cortex was found to be tightly regulated at rest(37.3℃±0.4℃(mean±SD))despite fluctuations in T_(re).With the development of hyperthermia,T_(br)increases and dovetails with the rising T_(re).Bilateral motor cortical activity was suppressed during high-intensity plantarflexion tasks,implying a reduced central motor drive in hyperthermic participants(T_(re)=38.5℃±0.1℃).Global gray matter perfusion and regional perfusion in sensorimotor cortex were reduced with passive hyperthermia.Executive function was poorer under a passive hyperthermic state,and this could relate to compromised visual processing as indicated by the reduced activation of left lateral-occipital cortex.Conversely,ingestion of blended ice before and during exercise alleviated the rise in both T_(re)and T_(bc)and mitigated heat-related neural perturbations.Conclusion:Severe heat exposure elevates T_(br),disrupts motor cortical activity and executive function,and this can lead to impairment of physical and cognitive performance. | Xiang Ren Tan Mary C.Stephenson Sharifah Badriyah Alhadad Kelvin W.Z.Loh Tuck Wah Soong Jason K.W.Lee Ivan C.C.Low | 2024 | Journal of Sport and Health Science2024，13，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员