摘要：α-Fe2O3 thin films have been synthesized and used as photoanodes for photo-electrochemical (PEC) water oxidation. Molybdate was introduced to mediate hematite thin films via two synthesis routes (namely in situin situ mediation and ex situ modification). Through the in situ mediation process, the morphology and film thickness could be changed significantly due to the addition of MoO42-, while for the ex situ modification, the PEC performance of the hematite has been greatly improved without changing the nanorod morphology. Various characterizations such as UV-Vis absorption, transmission electronic microscopy, scanning electronic microscopy, Mott-Schottky, electrochemical impedance spectroscopy were conducted and the PEC performances were investigated.

摘要：Four organic smallmolecule hole transport materials(D41, D42,D43 and D44) of tetraarylpyrrolo[3,2-b]pyrroles were prepared. They can be used without doping in the manufacture of the inverted planar perovskite solar cells. Tetraarylpyrrolo[3,2-b]pyrroles are accessible for one-pot synthesis.D42, D43 and D44 possess acceptor-π-donor-π-acceptor structure, on which the aryl bearing substitutes of cyan, fluorine and trifluoromethyl, respectively. Instead, the aryl moiety of D41 is in presence of methyl with a donor-π-donor-π-donor structure. The different substitutes significantly affected their molecular surface charge distribution and thin-film morphology, attributing to the electron-rich properties of fused pyrrole ring. The size of perovskite crystalline growth particles is affected by different molecular structures,and the electron-withdrawing cyan group of D42 is most conducive to the formation of large perovskite grains. The D42 fabricated devices with power conversion efficiency of17.3% and retained 55% of the initial photoelectric conversion efficiency after 22 days in dark condition. The pyrrolo[3,2-b]pyrrole is efficient electron-donating moiety for hole transporting materials to form good substrate in producing perovskite thin film.

摘要：A new conformationally restricted cyclic analogue of muramyl dipeptide was designed and manually synthesized by our 揗eshed-Bag Gathered-Bunch?method with a combination of Fmoc, allyl and N-1-(4,4-dimethyl2,6-dioxocyclo-hexylidene)ethyl chemical protection strategy.

摘要：介绍了基于代码组件库的代码组件动态组合重用的支撑环境CCRSE的设计策略 ,包括代码组件及其组合机制的设计、CCRSE体系结构及其功能的设计 .通过集成支持各种重用活动的一系列工具 ,CCRSE能够为代码组件动态组合重用的全过程提供系统全面的技术支持 .

摘要：Background:Total mesorectum excision(TME)is considered the standard surgical procedure for rectal-cancer *** TME(taTME)is a new procedure to treat low rectal *** published studies have proven that taTME can provide a better-quality resected specimen in low-rectal-cancer patients in comparison to the transabdominal procedure,yet long-term outcomes must be *** designed this non-inferiority trial(TaLaR trial)to compare short-term and long-term outcomes between taTME and laparoscopic TME(lapTME)for rectal ***:The TaLaR trial is a phase III open-labeled multicenter randomized-controlled *** who are diagnosed with rectal cancer with no more than T3N2 stage,and with the tumor location below the peritoneal reflection by magnetic resonance imaging scan,digital rectal examination,or colonoscopy,qualify for this *** calculating,a total of 1,114 patients(557 per group)will be randomly allocated to either the taTME or the lapTME *** endpoints are the 3-year disease-free survival(DFS)rate and the 5-year overall survival(OS)*** endpoints include specimen quality,perioperative results,pelvic and anal function,and quality of ***:The TaLaR trial is expected to clarify whether taTME can achieve comparable oncological outcomes,as well as improve specimen quality and recovery conditions in rectal-cancer patients compared with lapTME.

摘要：从理论上研究了平行双量子点系统中的电子关联效应对该系统磁输运性质的影响.基于广义主方程方法,计算了通过此系统的电流、微分电导和隧穿磁阻.计算结果表明:电子自旋关联效应可以促发一个很大的隧穿磁阻,而电子库仑关联效应不仅可以压制电子自旋关联效应,还可以导致负隧穿磁阻和负微分电导的出现.对相关的基本物理问题进行了讨论.

摘要：为研究插槽结构高强度装配式桥墩在地震作用下的力学性能及可靠性,制作2个桥墩足尺模型进行拟静力试验,结合Ucfyber专业抗震软件,分析该桥墩结构受震时的破坏形式、刚度、承载能力及延性系数。结果表明:在地震作用下,插槽结构装配式桥墩承台位置以上80 cm高度范围内的墩柱为主要破坏区,150 cm高度范围内的墩柱为主要开裂区域,结构呈现塑性破坏特征。插槽结构并未破坏,说明其可以有效传递荷载。在拟静力加载过程中桥墩结构刚度持续降低,在破坏过程中有明显的屈服阶段,承载力随施加水平位移加大而缓慢下降。该插槽结构装配式桥墩承载能力和延性系数理论值及试验值均满足规范设计要求,说明其具有较好的抗震性能。

摘要：针对以往作物模型都是基于单点进行研究而导致空间外推不理想、尺度上升困难等问题,根据水稻生产潜力模型和栅格计算的特点,将模型与地理信息系统集成,综合利用空间数据和属性数据,在Visual *** 2005开发环境中嵌入ArcGIS Engine组件.利用COM技术,遵照软件系统设计思想,设计并实现了水稻生产潜力动态预测系统.该系统使模型参数得到系统化处理,模型计算更加高效,分析更加精确,能较好地实现水稻生产潜力动态预测功能,同时对农业资源管理也具有非常重要的作用.

摘要：基于相位式激光测距的工作原理,提出了将相位式激光测距仪用于水下测距的思路,从原理上分析了水下相位式激光测距的可行性。通过水下距离测量实验,对水下相位式激光测距可行性进行了验证,完成了水下相位式激光测距仪的测距定标算法,并探究了水体浊度对相位式激光测距动态范围和测距精度的影响。实验结果表明,经过定标校正后的水下相位式激光测距仪在水下3.5 m范围内测距误差平均值不超过3 mm,测距范围与水体浊度间存在指数衰减关系。该水下相位式激光测距仪为水下距离的探测提供了一种新方法,可实现水下目标近距离的精确测距。

摘要：针对目前锻模知识普遍缺乏有效的归纳和整理,且知识和经验的重用和共享性较差的现象,提出了对于锻模设计具有重要意义的锻模知识网络化管理的思想。通过以网络技术和数据库技术为支撑工具,以运行在J2EE应用服务器上的OpenLaszlo平台为软件开发环境,采用XML语言作为数据交换的标准,开发出通过客户端浏览器显示的人机交互界面,实现了锻模知识的表示、获取以及知识的一致性和完整性维护的功能,并建立了支持锻模设计的知识管理系统平台。同时阐述了知识管理对锻模设计的重要性,提出KBE环境下锻模知识管理系统的网络化体系架构,讨论了网络化KBE系统的开发原则。通过实例运行,验证了该系统的可读性和可扩展性。