摘要：一年两次的巴黎家居装饰博览会将所有室内装饰领域的专业人士汇聚一堂，向世界呈现一场引领家居行业的盛会。零售行业买手，业内人士及进出口商聚集在巴黎北部维勒班特展览中心，共同见证新的设计理念，审视潮流趋势的演变，规划下一个商业契机。今年9月又到了注入能量的时候。每当提及设计，似乎与节约能源相去甚远。然而事实正好相反。为了使更多的人有美好体验，我们鼓励消费。引擎需要高速运转，来应对渴求变化的热潮以及巨大压力下勃发的欲望。正面的波段和乐天主义思想激励着事件向好的方向发展。这个变化对我们是有益的，它能够解放想象力，给我们的审美赋予始料未及的活力，活跃另类的思潮。

摘要：Autograft or metal implants are routinely used in skeletal ***,they fail to provide long-term clinical resolution,necessitating a functional biomimetic tissue engineering *** use of native human bone tissue for synthesizing a biomimeticmaterial inkfor three-dimensional(3D)bioprintingof skeletal tissueis anattractivestrategyfor ***,human bone extracellular matrix(bone-ECm)offers an exciting potential for the development of an appropriate microenvironment for human bone marrow stromal cells(HBmSCs)to proliferate and differentiate along the osteogenic *** this study,we engineered a novel material ink(LAB)by blending human bone-ECm(B)with nanoclay(L,Laponite®)and alginate(A)polymers using extrusion-based *** inclusion of the nanofiller and polymeric material increased the rheology,printability,and drug retention properties and,critically,the preservation of HBmSCs viability upon *** composite of human bone-ECm-based 3D constructs containing vascular endothelial growth factor(VEGF)enhanced vascularization after implantation in an ex vivo chick chorioallantoic membrane(CAm)*** inclusion of bone morphogenetic protein-2(BmP-2)with the HBmSCs further enhanced vascularization and mineralization after only seven *** study demonstrates the synergistic combination of nanoclay with biomimetic materials(alginate and bone-ECm)to support the formation of osteogenic tissue both in vitro and ex vivo and offers a promising novel 3D bioprinting approach to personalized skeletal tissue repair.

摘要：melt extrusion-based additive manufacturing(mE-Am)is a promising technique to fabricate porous scaffolds for tissue engi-neering ***,most synthetic semicrystalline polymers do not possess the intrinsic biological activity required to control cell *** of biomolecules on polymeric surfaces of Am scaffolds enhances the bioactivity of a construct;however,there are limited strategies available to control the surface ***,we report a strategy to tune the surface density of bioactive groups by blending a low molecular weight poly(ε-caprolactone)5k(PCL5k)containing orthogonally reactive azide groups with an unfunctionalized high molecular weight PCL75k at different *** porous three-dimensional(3D)scaf-folds were then fabricated using a high weight percentage(75 wt.%)of the low molecular weight PCL *** a proof-of-concept test,we prepared films of three different mass ratios of low and high molecular weight polymers with a thermopress and reacted with an alkynated fluorescent model compound on the surface,yielding a density of 201-561 pmol/cm^(2).Subsequently,a bone morphogenetic protein 2(BmP-2)-derived peptide was grafted onto the films comprising different blend compositions,and the effect of peptide surface density on the osteogenic differentiation of human mesenchymal stromal cells(hmSCs)was *** two weeks of culturing in a basic medium,cells expressed higher levels of BmP receptor II(BmPRII)on films with the conjugated *** addition,we found that alkaline phosphatase activity was only significantly enhanced on films contain-ing the highest peptide density(i.e.,561 pmol/cm^(2)),indicating the importance of the surface *** together,these results emphasize that the density of surface peptides on cell differentiation must be considered at the cell-material ***,we have presented a viable strategy for mE-Am community that desires to tune the bulk and surface functionality via blending of(m

摘要：为提高基于近地光谱技术的稻麦精准变量施肥机排肥性能稳定性,改善变量施肥控制精度,建立了外槽轮式变量施肥机离散元仿真模型,运用离散单元法和EDEm 2.2软件对施肥机排肥过程进行性能分析和数值模拟,研究不同排肥器结构和施肥控制策略对施肥机排肥稳定性的影响,并通过台架试验和田间试验验证仿真模型的准确性。结果表明:改进后的排肥器施肥量变异性系数明显减小,标准差减小14.59 g,变异系数降低9.9%;采用转速优先控制策略,当槽轮开度为19.34 mm时,排肥量稳定性系数最佳为1.09%;采用开度优先控制策略,当槽轮转速为55.75 r/min时,排肥量变异性系数最小为1.85%;与验证试验结果相比,误差最大为14.06%。结果验证了离散元仿真方法分析颗粒运动过程的准确性,表明所设计改进的排肥器能够提高施肥机排肥稳定性,满足稻麦精准变量施肥要求。

摘要：The trend towards miniaturization has increased dramatically over the last decade, especially within the fields concerned with bioengineering, microelectronics, and aerospace. micromillin8 is among the principal manu- facturing processes which have allowed the development of components possessing micrometric dimensions, being used to the manufacture of both forming tools and the final product. The aim of this work is to present the principal aspects related to this technology, with emphasis on the work material requirements, tool ma- terials and geometry, cutting forces and temperature, quality of the finished product, process modelling and monitoring and machine tool requirements. It can be noticed that size effect possesses a relevant role with regard to the selection of both work material （grain size） and tooling （edge radius）. Low forces and temper- ature are recorded during micromillin8, however, the specific cutting force may reach high values because of the ploughing effect observed as the uncut chip thickness is reduced. Finally, burr formation is the principal concern with regard to the quality of the finished part.

摘要：东丽湖邻里中心的设计构思来源于欧洲传统城市空间.欧洲老城的特点是许多小尺度建筑的集合,它们外观各异,但是由于材料的选择和共同的建筑传统形成了具有统一建筑语言的整体.

摘要：Bloch方程是NmR/mRI计算、模拟和实验的基础,但通常在不加特定的绝热和非绝热条件的前提下获得Bloch流动方程的解析解是非常困难的。流动方程的一般解析解可以为理解NmR/mRI的基本概念提供额外的信息,而又不需要通常的指数方程。作者的目的是通过贝塞尔函数及其特性得到与时间无关的NmR流动方程的解析解。在不需要主观添加弥散项的前提下利用贝塞尔函数及其特性从NmR流动方程中获得了Stejskal-Tanner公式。这证实了弥散是Bloch流动方程的内在属性并可以通过如贝塞尔函数的适当数学函数提取出来。从解析解得到的非高斯行为的弥散信号在如脑白质的各项异性组织环境中是非常有意义的。发现弥散系数是与T1和T2弛豫参数直接相关的,因此通过对大量已有的贝塞尔函数进行合适利用可以在四个分离的缓存内采集mRI信号(实部和虚部,相位和绝对值)。能够利用mRI监测药物对于不同组织尤其是脑部功能活动的效果。

摘要：一旦一位艺术家决定与另一位共同创作，就得承担失败的风险。两颗独立的头脑碰撞出的可以是不和谐的、相互破坏的。也可以是和谐的，互补的。理想状态下，后者是可以达到的——两个人的智慧加起来总比一个强。而展览“一次”就是由“三个诸葛亮”合奏出的和谐旋律。

摘要：科幻是什么？在这一门类的诸多定义中，或许最适合本期《艺术界》的，是文学批评家达科-苏文的见解：“一种文学类型或者说语吉结构，它的充要条件在于认知与疏离之间的在场与互动，其作用的主要方法是以一种想象的框架来代替作荇所处的经验环境。”而当我们专注于该定义所给出的条件本身时，便会发现这一矩阵可以被轻而易举地应用于当代艺术之中。认知与疏离难道不恰好高屋建瓴地标记出了当代艺术所对应的这两则主要目标和功效吗？

摘要：非凡传奇人物菲利普·斯塔克集流行明星、疯狂发明家与浪漫的哲人于一身。从法国总统的私人住宅到欧洲最大的废物处理中心,从全球各地的咖啡馆到浴室中的牙刷,仿佛世界中的一切都是斯塔克设计的对象。斯塔克新近发表了几款作品依旧惊艳世界,其中体现出来的设计功力如同水银泻地般流畅而收放自如。