小卫星星载操作系统内核的设计

小卫星由于一些突出的优点正成为研究的焦点，而星载操作系统是星务管理软件指挥卫星运行的平台。当前没有专门为小卫星设计 的实时操作系统，一般都是对通用嵌入式实时操作系统进行裁剪来完成，需要很大的工作量。在某小卫星设计的基础上，提出了一种星载实 时操作系统内核的设计方法，其特点是：面向小卫星应用，代码少、实时性强、稳定性高。哈尔滨工业大学跨学科交叉性研究基金资助项目(HIT MD.2001.01

Design and Analysis of Elastic Component of Resonant Cylinder Pressure Sensor

利用有限元分析软件AnSyS对振筒式压力传感器弹性元件——谐振筒进行了动态特性仿真分析,建立了谐振筒的参数化模型,基于模态分析选定合适的工作振型,重点利用谐响应分析讨论了谐振筒品质因数的影响因素。研究表明,当谐振筒的基模态为(4,1)模态时,品质因数随谐振筒外半径、有效长度以及壁厚的增加而减小,而工作时作用于谐振筒的激励载荷只改变了谐振筒振幅大小,对品质因数无明显影响。通过瞬态动力学分析计算得到谐振筒的调节时间,证明了谐振筒具有较好的动态响应特性。为谐振筒的结构设计和优化提供了参考。Simulation and analysis on dynamic behavior of resonant cylinder which composed the pressure sensor as the elastic component are conducted using the finite element analysis software ANSYS.Parametric model is established.Based on the modal analysis,an appropriate mode for work is selected out.Factors affecting quality factor are discussed mainly through harmonic response analysis.Results indicate that,when the cylinder worked on(4,1) mode,quality factor would decreases as radius,effective length or thickness increase,while the force only had an influence on the amplitude of the vibration rather than the quality factor.Adjusting time is obtained by transient dynamic analysis,thus proving the rapidity of resonant cylinder.The study provides reference both for structure design and optimization

Electrohydrodynamic printing for head with retractable needle

设计了一种新型的基于电液动力学的喷头,该喷头内含一个可伸缩的针尖。由这种喷头组成的喷印系统,在不同的条件下可以产生离散的点和珠状结构两种喷射模式。结果表明:溶液浓度是区分这两种喷射模式的关键因素。当喷射溶液的浓度比较低时,喷印系统喷射出离散的圆点;当较高时,喷射出珠状结构。其珠状结构中珠子的直径随着系统供液速率的增加而变大,随着PEO溶液浓度的提高和针尖频率的增加而减小。改变收集板的移动速度,可以改变喷射沉积物形态,且该系统的喷射频率与可伸缩针尖的运动频率之间有很好的线性相关性。A novel electrohydrodynamic printing system with a retractable needle was designed,by which both ejection modes of dots and bead-on-string structures can be produced.Experimental results show that solution concentration is the key element to define the ejection mode.Dots can be obtained for lower solution concentration,otherwise bead-on-string structures would be produced.the diameter of deposition dots increases with the increasing of supply rate,and decreases with the increasing of PEO solution concentration and the frequency increasing of needle.By changing the speed of collector,different morphologies of depositions can be obtained.In addition,the deposition frequency has a close relationship with the retractable frequency of needle.中央高校基本科研业务费专项资金(2010121039);国家自然科学基金(51035002;50875222

类泛素蛋白及其中文命名

泛素家族包括泛素及类泛素蛋白,约20种成员蛋白.近年来,泛素家族领域取得了迅猛发展,并已与生物学及医学研究的各个领域相互交叉.泛素家族介导的蛋白质降解和细胞自噬机制的发现分别于2004和2016年获得诺贝尔奖.但是,类泛素蛋白并没有统一规范的中文译名. 2018年4月9日在苏州召开的《泛素家族介导的蛋白质降解和细胞自噬》专著的编委会上,部分作者讨论了类泛素蛋白的中文命名问题,并在随后的\"泛素家族、自噬与疾病\"(Ubiquitinfamily,autophagy anddiseases)苏州会议上提出了类泛素蛋白中文翻译草案,此草案在参加该会议的国内学者及海外华人学者间取得了高度共识.冷泉港亚洲\"泛素家族、自噬与疾病\"苏州会议是由美国冷泉港实验室主办、两年一度、面向全球的英文会议.该会议在海内外华人学者中具有广泛影响,因此,参会华人学者的意见具有一定的代表性.本文介绍了10个类别的类泛素蛋白的中文命名,系统总结了它们的结构特点,并比较了参与各种类泛素化修饰的酶和它们的生物学功能.文章由45名从事该领域研究的专家合作撰写,其中包括中国工程院院士1名,相关学者4名,长江学者3名,国家杰出青年科学基金获得者18名和美国知名高校华人教授4名.他们绝大多数是参加编写即将由科学出版社出版的专著《泛素家族介导的蛋白质降解和细胞自噬》的专家

CCCCC pentadentate chelates with planar Möbius aromaticity and unique properties

本课题充分发挥了厦门大学多学科协同研究优势，通讯作者为夏海平教授（合成、表征）、刘刚教授（生物医学应用）和吕鑫教授（理论计算）。合成实验和结构表征由朱从青（第一作者，目前在麻省理工学院、2005年诺贝尔化学奖得主Richard Schrock教授课题组从事博士后研究）完成；生物医学应用由杨彩霞（共同第一作者）、林凎、杨宇惠、王晓勇合作完成；理论计算由朱军、王永恒、朱从青完成。美国NIH的陈小元教授参与了生物医学应用的讨论。该研究工作得到国家自然科学基金委、科技部项目的支持。The coordinating atoms in polydentate chelates are primarily heteroatoms. We present the first examples of pentadentate chelates with all binding atoms of the chelating agent being carbon atoms, denoted as CCCCC chelates. Having up to five metal-carbon bonds in the equatorial plane has not been previously observed in transition metal chemistry. Density functional theory calculations showed that the planar metallacycle has extended Craig-Möbius aromaticity arising from 12-center–12-electron dπ-pπ π-conjugation. These planar chelates have broad absorption in the ultraviolet-visible–near-infrared region and, thus, notable photothermal performance upon irradiation by an 808-nm laser, indicating that these chelates have potential applications in photothermal therapy. The combination of facile synthesis, high stability, and broad absorption of these complexes could make the polydentate carbon chain a novel building block in coordination chemistry.the National Basic Research Program of China (nos. 2012CB821600 and 2014CB744503) , the National Science Foundation of China (nos. 21332002, 81422023, 51273165, 21490573, and 21573179)

Theoretical Investigations on Umpolung Reactions Catalyzed by N-heterocyclic Carbenes

近年来，氮杂环卡宾催化的极性反转反应受到人们的广泛关注。与传统有机催化不同，氮杂环卡宾能够反转底物（醛）的极性，使其具有相反的反应性，如将亲电试剂转化为亲核试剂。目前该策略已广泛应用于1,2-、1,4-及1,6-双官能团化合物的合成。本论文系统地对该类反应中存在的一些问题进行了理论研究，主要内容如下： （1）催化剂、底物和活性中间体的反应性。氮杂环卡宾催化的极性反转反应包含两个基本步骤，即催化剂与底物结合形成极性反转的活性中间体和活性中间体与另一分子底物加成形成产物(或产物前躯体)。从理论上系统探讨催化剂、底物和活性中间体的反应性的相对强弱，有助于理解该类反应的化学选择性和实验上选择催化剂和...In recent years, umpolung reactions catalyzed by N-heterocyclic carbenes (NHCs) have been investigated extensively. In contrast to traditional organocatalysis, NHC can inverse the polarity-derived reactivity of substrates, e.g., turning electrophiles into nucleophiles. This strategy has been widely applied to the synthesis of 1,2-, 1,4- and 1,6-bifunctional compounds. In this thesis, we have syste...学位：理学博士院系专业：化学化工学院_物理化学学号：2052011015371

纯电动物流车动力系统设计与优化

In order to reasonably match the parameters of the electric logistics vehicle power system,according to the technical requirements of the electric logistics vehicle,the preliminary design and calculation of the relevant parameters of the electric logistics vehicle are carried out,and the whole vehicle simulation model is built by AVL-Cruise on the basis of the simulation conditions.Based on the complexity of parameter matching of pure electric logistics vehicle power system,various parameters need to be considered comprehensively,and a multi-objective genetic algorithm optimization method is proposed.The optimization method takes the vehicle’s power and economy as the optimization goal at the same time,and takes the maximum vehicle speed and acceleration time as constraints,establishes the transmission system optimization model and finds its optimal solution.Through the simulation analysis of the optimized parameters,the feasibility and rationality of the multi-objective genetic algorithm for the optimization of the power system of the electric logistics vehicle is presented,which provides a new way for the optimization of the power system parameters of the electric logistics vehicle