摘要：要了解一个城市,可观其建筑、市容与人文风景。因为城市空间本身就是历史的缩影、文化的大杂烩。欣赏城市建筑,不用预约,也不需门票,可以说"举手投足尽是艺术"。一如法国的庞比度中心,或是台湾的十三行博物馆,俱为城市空间创造了艺术及人文景观的价值。位于布鲁塞尔市中心,一个由木条交迭而成的大型雕塑Cityscape,是座别具特色的城市建筑,而幕后操刀手,正是比利时艺术家Arne Quinze,他亦是比利时设计公司Quinze&Milan的创办人兼艺术总监。Quinze & Milan不只是一家设计公司,更是一个实现天马行空想法的艺术平台。

摘要：完美的手术技术和充分的免疫抑制是确保最佳移植物和患者存活的关键。不同药物的可用性导致了一些通常由行业驱动的不同类型的临床试验,以发现理想的免疫抑制方案。然而,大量且概念不同的研究设计未能明确定义最佳免疫抑制方案。基于钙调神经磷酸酶抑制剂他克莫司、抗代谢药物霉酚酸酯或硫唑嘌呤和短期类固醇(除了可能的诱导外)为基础的三联免疫抑制方案仍然是目前公认的肝移植标准免疫抑制方案。然而,鉴于排斥定义的变化、免疫抑制负荷的定制以及由于慢性免疫抑制引起的长期副作用,未来的试验最好包括一个以上的终点,而不是急性T细胞介导的急性排斥(a-TCMR)或肾衰竭。相反,需要一个涵盖患者和移植物存活率以及急性和慢性排斥反应发生率的综合终点。这些免疫现象应根据一系列长期的生物学和组织学随访进行检查。临床相关a-TCMR的诊断和治疗应基于综合生物学、免疫学和组织病理学发现。这两个要素对于朝着更谨慎的免疫抑制处理和有利于临床操作耐受性的方向发展至关重要。

摘要：Dear Editor,Gynoecism has been extensively exploited in cucumber breeding. The utilization of a gynoecious line permits earlier pro- duction of hybrids, higher yield, and more concentrated fruit set. In addition, the utilization of a gynoecious line eliminates the need for hand emasculation and reduces the labor cost of crossing （Robinson, 2000）. Therefore, the development of gynoeoious inbred lines is instrumental for cucumber breeding. Gynoecious inbreds can be produced by selection from crosses of monoecious inbreds, or can arise spontaneously from natural variation. However, both methods have disadvantages. For instance, the time-consuming and laborious process of crossing can also lead to the introduction of undesirable traits,

摘要：Rational composition design of trimetallic phosphide catalysts is of significant importance for enhanced surface reaction and efficient catalytic ***,hierarchical Co_(x)Ni_(y)Fe_(z)P with precise control of stoichiometric metallic elements(x:y:z=(1-10):(1-10):1)has been synthesized,and Co_(1.3)Ni_(0.5)Fe_(0.2)P,as the most optimal composition,exhibits remarkable catalytic activity(η=320 mV at 10 mA cm^(−2))and long-term stability(ignorable decrease after 10 h continuous test at the current density of 10 mA cm^(−2))toward oxygen evolution reaction(OER).It is found that the surface P in Co_(1.3)Ni_(0.5)Fe_(0.2)P was replaced by O under the OER *** density function theory calculations before and after long-term stability tests suggest the clear increasing of the density of states near the Fermi level of Co_(1.3)Ni_(0.5)Fe_(0.2)P/Co_(1.3)Ni_(0.5)Fe_(0.2)O,which could enhance the OH−adsorption of our electrocatalysts and the corresponding OER performance.

摘要：Photocatalytic hydrogen(H_(2))evolution using covalent organic frameworks(COFs)is an attractive and promising avenue for exploration,but one of its big challenges is low photo-induced charge *** this study,we present a straightforward and facile dipole polarization engineering strategy to enhance charge separation efficiency,achieved through atomic modulation(O,S,and Se)of the COF *** findings demonstrate that incorporating atoms with varying electronegativities into the COF matrix significantly influences the local dipole moment,thereby affecting charge separation efficiency and photostability,which in turn affects the rates of photocatalytic H_(2) *** a result,the newly developed TMT-BO-COF,which contains highly electronegative O atoms,exhibits the lowest exciton binding energy,the highest efficiency in charge separation and transportation,and the longest lifetime of the active *** leads to an impressive average H_(2) production rate of 23.7 mmol g^(−1) h^(−1),which is 2.5 and 24.5 times higher than that of TMT-BS-COF(containing S atoms)and TMT-BSe-COF(containing Se atoms),respectively.A novel photocatalytic hydrogen evolution mechanism based on proton-coupled electron transfer on N in the structure of triazine rings in vinylene-linked COFs is proposed by theoretical *** findings provide new insights into the design of highly photoactive organic framework materials for H_(2) evolution and beyond.

摘要：The dynamic adsorption of possible intermediates on single-atom catalysts(SACs)under working condition plays a key role in the electrocatalytic performance by the oxygen evolution reaction(OER),and therefore the performance of the dynamic adsorption should be fully considered in the theoretical screening of potential *** on density functional theory calculations,the OER performance of 27 types of C_(2)N-supported single transition metal atoms(TM@C_(2)N)is systematically investigated without and with considering the dynamic adsorption of possible *** considering dynamic adsorption,only Rh@C_(2)N and Ni@C_(2)N are screened out as good ***,by further considering the dynamic adsorption configurations of possible intermediates,more promising TM@C_(2)N SACs including Fe(Co,Ni,Ru,Rh,Ir)@C_(2)N toward the OER are screened *** presence of the intermediates(*HO,*O)on SACs could shift their d band center toward lower energy level,which makes the interaction between the adsorbate and SACs moderate and thus enhances their OER *** present work is instructive for further screening and designing of efficient single-atom catalysts for the oxygen evolution reaction.

摘要：转基因技术是研究植物发育的有效的途径。比利时的作物设计公司(CropDesign)成功研制出称为TraitMill的技术平台,TraitMill平台不仅是一个能够大规模开展转基因和植株评价的高通量的技术平台,而且还是一个在植物表型上鉴定基因和基因组合的非常有用的工具。无论是在理想的植株生长条件下,还是在不同非生物逆境或营养胁迫条件下,利用TraitMill平台每年可成功地鉴定成百个不同的“启动子—基因”组合。基于对水稻生长发育的特别设计和高精度的测量方法改造,TraitMill平台已经全面应用于水稻转基因及其性状的评价。迄今为止,TraitMill平台是唯一一个将转基因技术和植株性状自动化评价系统相结合的技术平台。显然,应用于改良禾谷类作物产量基因的鉴定,TraitMill平台具有独特的优势。

摘要：目前已经提出了一种主动式空气静压轴承,它具有一个可以用压电驱动器来改变形状的规则表面。普遍认为主动补偿方法是最有效的,其原因是小的驱动质量和大的承载力增益及带宽使这种主动式空气静压轴承具有无限大的静态刚度,并具有仅被支承机械系统所限制的补偿带宽。微位移测试表明,0.1μm的进给可以相当容易地被高速跟踪。

摘要：地点:孟加拉国现场项目。目的:比较常规使用的石炭酸复红染色法改变的有效性。设计:75个现场临床检查地点,使用常规1％碱性复红加热15分钟的萋-尼氏染色法(ZN)。盲法对照检查ZN 1％与ZN 0．3％碱性复红染色5分钟,或ZN 1％5分钟与Kinyoun冷染色法的双份涂片的结果。结果不符时进行复检。结果:假阳性的数目可对照时,Kinyoun氏法的敏感性比ZN 1％5分钟低的多(85．6％对93．0％, P<0．001)。ZN 1％5分钟的敏感性不比0．3％5分钟染色高(89．9％对86．5％)。常规使用的1％15分钟的ZN检查法比本研究中的其它方法查出的阳性教都要高。结论:Kinyoun氏冷染色法在现场临床条件下的敏感性不令人满意。WHO/IUATLD推荐的0．3％复红5分钟的敏感性和原来的1％ZN法5分钟没明显区别,但1％15分钟加热染色法更好。降低复红浓度、减少染色时间可能会增加出错的机会。结核项目中使用的较高浓度和较长时间的热ZN法不应当鼓励去改变。

摘要：A 2 × 2 optical waveguide coupler at 850 nm based on the multimode interference （MMI） structure with the polysilsesquioxanes liquid series （PSQ-Ls） polymer material and the imprint technique is presented. The influence of the structural parameters, such as the single mode condition, the waveguide spacing of input/output ports, and the width and length of the multimode waveguide, on the optical splitting performance including the excess loss and the uniformity is simulated by the beam propagation method. By inserting a taper section of isosceles trapezoid between the single mode and multimode waveguides, the optimized structural parameters for low excess loss and high uniformity are obtained with the excess loss of -0.040 dB and the uniformity of-0.007 dB. The effect of the structure deviations induced during the imprint process on the optical splitting performance at different residual layer thicknesses is also investigated. The analysis results provide useful instructions for the waveguide device fabrication.