摘要：为开发一种制备工艺简单且湿敏传感特性优良的材料,本文以二氧化钛P25和NaOH为原料通过水热法制备合成了Na_(2)Ti_(3)O_(7)、Sr_(0.6)Ba_(0.4)TiO_(3)、SrTiO_(3)和BaTiO_(3)纳米线,使用SEM、EDX、XRD设备对材料进行表征,并研究其湿敏传感特性。结果表明,4种纳米线均具有较大的长径比,但又明显不同,Na_(2)Ti_(3)O_(7)和SrTiO_(3)、BaTiO_(3)、Sr_(0.6)Ba_(0.4)TiO_(3)直径分别约为10、10~200、50~200 nm,长度范围为10至上百微米。以4种纳米线为基础设计的湿敏传感器随频率增大,阻抗值明显减小,变化超过4个数量级;相对湿度(RH)从11%到95%,4种纳米线湿敏传感器的响应恢复时间分别为4、10 s,8、2 s,5、2 s,5、1 s;在重复3次过程中,均无明显基线漂移,响应值相差极小,且重复响应后阻抗值仍能恢复到初值。与其他制备方法相比,该水热制备法简单温和,全为无机原料,无需添加有机前驱体或模板、调节pH值或在高温下反应。4种纳米线湿敏传感器在室温下即可对湿度进行检测,具有灵敏度高、响应恢复速度快、重复性好、稳定性高的特点,在湿敏传感特性上展现出良好的应用潜力。

摘要：1背景春沐源小镇是一个位于广东省河源市的旅游胜地。2018年,张唐景观以河源恐龙化石文化为主题,在河边设计了约2.5 hm^(2)的龙骨乐园。2023年底,启动了一个以戏水为主题的乐园建设项目,选址位于龙骨乐园河对岸,用地面积约7000 m^(2)。设计概念来源于河源万绿湖的卫星图。河源市处于粤东北山区与珠江三角洲平原地区的结合部,粤赣边境山高岭峻,东江、新丰江纵贯全境,山岭与盆地相间,在山间和东江边分布着冲积平原和宽广的谷地。南岭山脉逐渐向平原过渡,形成湖岛交织的风貌特征。

摘要：It is a long-standing challenge to search for metallic glasses(MGs)with optimal combinations of glassforming ability(GFA),strength and toughness in the vast compositional *** taking into account both recently developed ellipse criterion and temperature-based GFA criterion,here we established quantitative correlations among compositions,elastic constants,GFA and mechanical properties of MGs,which enable to predict the GFA,fracture strength and fracture surface simultaneously in advance once the compositions of MGs are *** data confirm the validity of this approach in ***,a strategy for designing MGs with optimal combinations of strength,toughness and GFA is proposed,which allows for high-throughput discovering glass formers with excellent mechanical properties.

摘要：创作亦修行6月2日．“2012一张峰雕塑艺术展”在北京爱慕美术馆隆重开幕。现代雕塑家张峰1988年毕业于鲁迅美术学院雕塑系．2006年毕业于纽约艺术学院，获硕士学位，现为鲁迅美术学院雕塑系副教授。

摘要：重回经典服装似乎没有办法承担太过沉重的社会责任．它与政治、经济、人文和生活相关．但同时又不能高尚得太过阳春白雪。在欧洲经济一片低迷的情况下，设计师们还是咬紧了牙关．呈现出温暖的设计．这种温暖的设计与季节无关．甚至是与季节相反，它并不是能够让人保，

摘要：The high cost and low efficiency of fatigue tests are bottleneck problem for the anti-fatigue design of metallic *** this problem,a theoretical fatigue model is proposed in this study,the possible applications have also been *** results would be introduced in two serial papers,in which the first paper focuses on the model building and the applications on fatigue strength prediction;the second paper put emphasis on the influencing factors of the model parameters and the applications on fatigue strength *** this first paper,a theoretical model is proposed considering both the strength and plastic restrictions of fatigue *** the model builds up a brief relationship among yield strength(Y),tensile strength(T)and fatigue strength(F),it is named as the Y-T-F *** the verification with fatigue strength data covering various kinds of metallic materials and loading conditions,this Y-T-F model exhibits both generality and *** the Y-T-F model,the efficient fatigue strength prediction could be conducted by brief linear fitting and calculation,just through yield strength,tensile strength and several known fatigue strength ***,through its deduced Y-F model,the analytical formula of fatigue strength continuously changing with materials strengthening can be obtained,as well as the maximum value of fatigue strength and corresponding critical yield *** summary,the Y-T-F model would be useful for reducing the fatigue tests,thus providing new possibilities on the efficient anti-fatigue design and selection of metallic materials.

摘要：“设计何为”是2011成都双年展国际设计展上的一个讨论话题．而这个问题也正是我想问设计师马可的，“如何通过做没有设计的衣服帮助更多人获得心灵上的满足及幸福。“这是马可现在对于这个问题的解答。

摘要：Cartier珠宝一直以来为世人呈现精湛的高级定制饰品．此次来自Cartier的设计大师将神秘与奇幻的传说运用到珠宝的设计当中，呈现出至真至幻的真合神韵。

摘要：不用刻意追逐优雅的脚步，因为时间并未给予女人圈定美的态度，多一份活跃，多一份洒脱，自由的权力在无限的释放，或许带着一点点地浪漫但绝不是刻意的追求，女人本身就是多变多面的，任何时间，任何地点，就是要灵动。展现最美的一面。

摘要：“我喜欢首饰设计，从小就喜欢，在做一切的时候我把一切想的特别单纯美好，很多的作品中都带着我的快乐情绪．你不用理解我的情绪，只要能从中感受到你的快乐就好。”