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Chinese Science Bulletin 2001年第15期46卷 1242-1251页

作者： shuhua ma Xiaodong Zhang Hong Xu Xingkang Zhang Qiyuan Zhang State Key Laboratory for Structural Chemistry of Unstable & Stable Species Center of Molecular Science Institute of Chemistry Chinese Academy of Sciences Beijing China

The semiempirical AMI method, ah initio (HF/3-21G, 6-31G, 6-31G(d), 6-31+G(d)) and DFT (B3LYP/6-31G(d), 6-31+G(d)) methods were used to optimize the geometry of DDQ and its anion radical DDQ-. Nelsen’s model was used to calculate the internal reorganization energy λi of self-exchange electron transfer (ET) reactions. The calculated λi results of DDQ/DDQ-. by AM1 and B3LYP/ 6-31G(d), 6-31+G(d) methods are close to each other and consistent with the reported values; while those from Har-tree-Fock methods are too large because of not consideringthe effect of electron correlation. The structure and ET behavior of MQ0 /MQ0- couple were studied by AM1 and DFT (B3LYP/6-31G(d), 6-31+ G(d, p)) methods, and those of MQ0 /MQn-(n=1-7) were studied by AM1 method for the first time. The results indicate that the values of the heat of formation of MQn increases with the increasing of the length of the isoamylene substituent chains. It also shows that the length of substituent has little effect on the bond lengths,

关键词： DDQ menaquinone (MQn) self-exchange electron transfer internal reorganization energy AM1 ab initio DFT.

Effect of Sulfonation Degree on Performance of Proton Exchange Membranes for Direct Methanol Fuel Cells

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Chemical Research in Chinese Universities 2016年第2期32卷 291-295页

作者： XIANG Zheng ZHAO Xueping GE Junjie ma shuhua ZHANG Yuwei NA Hui Alan G. maeDiarmid Institute College of Chemistry Jilin University Changchun 130012 P. R. China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical materials School of Chemistry and Chemical Engineering University of Jinan Jinan 250022 P. R. China

A series of proton exchange membranes based on sulfonated polyarylene ether ketones（SPAEKs） was used to study the effect of sulfonation degree on proton conductivity, methanol permeation and performance of direct methanol fuel cells（DMFCs）. Dependences of physical characteristics of the membranes, i. e., proton conductivity, water uptake, swelling ratio, methanol permeability and ion exchange capacity（IEC） were systematically studied. Both methanol permeability and proton conductivity of the SPAEK membrane grow rapidly as the increase in sulfonation degree since methanol molecules and protons share the same transfer channel. However, the methanol permeability plays more important role comparing to proton conductivity. As a result, the SPAEK membrane with a medium sulfonation degree（60%） was found to yield the best performance in a DMFC due to the acquirement of balanced conductivity and methanol permeability.

关键词： Fuel cell Sulfonation degree Proton exchange membrane Methanol permeability

Velvet antler polypeptide is able to induce differentiation of neural stem cells towards neurons in vitro

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Journal of Traditional Chinese Medicine 2017年第3期37卷 308-313页

作者： Zhang Lihong Zhuang Zhihong Sun Yanan ma shuhua Yang Weifeng Lei Hongtao Zuo Junling Ouyang Jingfeng Wang Yi Graduate School Guangzhou University of Chinese MedicineGuangzhou 510006China Morphological laboratory Expelmental Research CenterResearch and Development Service BaseChina Academy of Chinese Medical SciencesBeijing 100700China First Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine Guangzhou 510405China

OBJECTIVE: To investigate the neural differentiation capacity of water extraction of velvet ***: Velvet antler(Cervus Nippon Temminck) polypeptide(VAP) was used to differentiate neural stem cells(NSCs) towards neurons in the study. Firstly, we obtain the polypeptides of VAP by water extraction. Secondly, we observed the morphology, assayed the factors in the media by enzyme-linked immunosorbent assay, and detected the special neural molecules by immuno fl uorescence staining. NSCs were cultured on the cell climbing film. After neuronal differentiation, differentiated NSCs were mounted for immunocytochemistry with immunofluorescence ***: The differentiating cells look like neuron,some special factors, such as Glial cell line-derived neurotrophic factor, nerve growth factor, in the media can be detected while differentiated neuron-like cells can express the special neural ***: Differentiation of NSCs towards neurons can be induced by velvet antler polypeptide.

关键词： line-derivedCornu cervi pantotrichum Glial cell neurotrophic factors, Nerve growthfactor Neural stem cells

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近代城市纪念性建筑:以青岛栈桥为例

华中师范大学学报（人文社会科学版） 2014年第4期53卷 130-138页

作者：马树华中国海洋大学文学与新闻传播学院山东青岛266100

近代纪念性建筑往往承载着一座城市的发展历史,凝结着空间与城市发展、与社会、与人的复杂关系,具有很强的城市文化标识功能。栈桥是青岛最典型的纪念性建筑,它既是青岛早期城市空间规划的陆海中心,也是城市的起点;其建筑形制虽然简单,... 详细信息

近代纪念性建筑往往承载着一座城市的发展历史,凝结着空间与城市发展、与社会、与人的复杂关系,具有很强的城市文化标识功能。栈桥是青岛最典型的纪念性建筑,它既是青岛早期城市空间规划的陆海中心,也是城市的起点;其建筑形制虽然简单,意义却格外丰富,是历届政府展现施政理念之所;作为一处公共空间,它呈现了都市日常生活的缩微图景以及人们的景观意象表达,其境况又往往与青岛的政治局势密切相关,是一处典型的政治空间,体现着空间与权力的互动关系。栈桥具象而浓缩地揭示了青岛的地方精神和文化样态,是理解这座城市历史发展与社会文化变迁的钥匙。

关键词：近代城市纪念性建筑青岛栈桥

Trajectory Planning of 6-DOF manipulator Based on Combination Function Method

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Trajectory Planning of 6-DOF Manipulator Based on Combinatio...

HRCT Scans of Peripheral Non-Small Cell Lung Cancers and their Relationship with Cyclin D1 Expression:a Longitudinal Study

第26届中国控制与决策会议

作者： ma shuhua Yang Lin Liu Zhigang Wang Jinkuan School of Information Science and Engineering Northeastern University School of Control Engineering Northeastern University at Qinhuangdao

ISBN: (纸本)9781479937097

Trajectory planning can ensure the robot arm move smoothly and quickly to the target position and realize the humanoid robot hand grasping. In the paper, we proposed a trajectory planning of the H20 humanoid robot arm based on combination function method. It is composed of cycloid and cosine function with different frequency. The combination of cycloid function and cosine function adopted has solved the problem that angular velocity and angular acceleration are high in other methods. Thus, it reduces the vibration and makes the movement more stable. The manipulator kinematics is analyzed in a coordinate system established by Denavit-Hartenberg method. The trajectory planning process and the simulation results in the joint space is described. The simulation results show that the method has advantages of providing a smooth movement and reducing the peak values of angular velocity and angular acceleration. The time to complete a given operation is shorter, which improves the work efficiency of the robot.

关键词： Trajectory Planning D-H modeling Combination Function Humanoid Robot

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Chinese Journal of Clinical Oncology 2008年第3期5卷 172-178页

作者： shuhua ma Linfa Wu Xiaomao Xu Hongbo Le Xiaoling Cheng Huihong Zhang Zhengyu Sun Zhaoxin Wang Min Wu Wei Mei Zhiguo Hu Yuguang Li Department of Radiology First Affiliated Hospital Medical College of Shantou University Shantou 515041 Guangdong Province China. Guangdong Key Laboratory of Medical Molecular Imaging Shantou 515041 Guangdong Province China. Department of Radiology Second Affiliated Hospital Medical College of Zhongshan University Guangzhou 510120 Guangdong Province China. Department of Radiology First Hospital of Harbin Harbin 150010 Heilongjiang Province. China.

OBJECTIVE To investigate cyclin D1 expression in peripheral lung cancers and its relationship with CT signs and prognosis. METHODS Cyclin D1 expression in peripheral lung cancers and its relationship with the CT imaging and prognosis were analyzed retrospectively by means of SP immunohistochemistry and spiral CT scanning in 92 patients with peripheral lung cancer verified by pathology. RESULTS Cyclin D1 expression was related to deep lobulation,spiculate protuberance,short thin spinules sign and mediastina lymph node *** D1 expression was not related to tumor size,cavity,pleural indentation,histological type,differentiation,tumor TNM stage,age or *** D1 was a negative prognostic factor whose over-expression indicated a poor prognosis. CONCLUSION Cyclin D1 expression may play an important role in the occurrence,progress and CT scan results of lung *** D1 was a negative factor whose over-expression implied a poor *** of the cyclin D1 and observation of the CT scan can be considered as indexes of clinical diagnosis and prognostic evaluation.

关键词： lung neoplasms cyclin D1 computed tomography.

Longitudinal Analysis of Antibody Dynamics in Severe Fever with Thrombocytopenia Syndrome Patients—High-Incidence Regions of China,2010–2023

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China CDC weekly 2024年第46期6卷 1211-1217,I0004-I0008页

作者： Yanhan Wen Dongmei Song Aqian Li Lina Sun shuhua ma Tiezhu Liu Xiaoxia Huang Tao Huang Boyang Li Mengxuan Wang Jiandong Li Mifang Liang Dexin Li Wei Wu Xinxian Dai Shiwen Wang National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases NHC Key Laboratory of Medical Virology and Viral DiseasesNational Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijingChina National Vaccine and Serum Institute BeijingChina

What is already known about this topic?Severe fever with thrombocytopenia syndrome(SFTS)is a serious tick-borne disease in East Asia with high mortality,particularly affecting the *** its discovery in 2010,inconsistencies in small-scale studies and the lack of decade-long research on antibody levels in large population samples after natural infection,along with the absence of an effective vaccine,highlight the need for large-scale,long-term data in highincidence regions of *** is added by this report?This study of 1,410 serum samples from SFTS patients in high-incidence regions of China reveals that immunoglobulin M(IgM)levels peak at 8–14 days post-infection,declining to nearly undetectable levels by 180 *** G(IgG)and neutralizing antibodies(NAb)levels peak at 22–180 days,persisting up to 10 *** levels correlate with viral load and various immune and coagulation parameters,with lower levels observed in fatal *** convalescence,elderly patients have lower IgG levels,whereas females exhibit higher IgG levels compared with *** are the implications for public health practice?The study’s findings on long-term antibody dynamics in SFTS patients can significantly improve vaccine development,optimize therapy scheduling,inform public health policies,and enhance diagnostic tools,leading to better disease management and prevention in high-incidence areas.

关键词： vaccine prevention Antibody

中国旅游经济与生态系统服务协调效应及其障碍因素研究

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旅游学刊 2024年第4期39卷 93-108页

作者：黄子璇史达马淑花东北财经大学旅游与酒店管理学院辽宁大连116025 东北财经大学东北财经大学-萨里大学现代管理联合研究中心辽宁大连116025 东北财经大学萨里国际学院辽宁大连116025 南京师范大学商学院江苏南京210023

在生态文明建设背景下,科学衡量旅游经济与生态环境的协调关系,厘清影响其协调发展的障碍因素,具有重要意义。文章首次引入生态系统服务测算,并在方法层面对现有的静态测算模型进行动态化创新,定量测度2000—2020年中国旅游经济与生态... 详细信息

在生态文明建设背景下,科学衡量旅游经济与生态环境的协调关系,厘清影响其协调发展的障碍因素,具有重要意义。文章首次引入生态系统服务测算,并在方法层面对现有的静态测算模型进行动态化创新,定量测度2000—2020年中国旅游经济与生态系统服务耦合协调度,科学度量其空间演化格局,并识别影响其协调发展的主要障碍因素。结果显示:1)中国旅游经济综合指数总体呈现波动上升态势,表现出东南高、西北低的分布格局;2)中国生态系统服务有一定的改善,整体呈现增长态势,表现出东高西低,由东南向西北递减的分布格局;3)中国旅游经济与生态系统服务长期处于高水平磨合阶段,耦合协调效应稳步增强,呈东高西低、南高北低的分布格局,极核特征明显;4)旅游经济效益、支持服务、旅游经济规模和调节服务是制约旅游经济与生态系统服务协调发展的主要因素。

关键词：旅游经济生态系统服务耦合协调障碍度

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基于虚拟仪器的纳米晶磁环动态参数测试系统

仪器仪表学报 2008年第4期29卷 860-865页

作者：马淑华赵一丁汪晋宽东北大学秦皇岛分校自动化系秦皇岛066004 东北大学信息科学与工程学院沈阳110004

开发了基于虚拟仪器技术,采用大功率脉冲励磁电源、高速数据采集卡的纳米晶磁环动态参数测试系统。由于脉冲励磁与标准正弦波励磁的测试结果存在差异,为得到相当于正弦励磁下的磁滞回线及磁参数,通过SY-8232交流B^H回线测试仪对测试系... 详细信息

开发了基于虚拟仪器技术,采用大功率脉冲励磁电源、高速数据采集卡的纳米晶磁环动态参数测试系统。由于脉冲励磁与标准正弦波励磁的测试结果存在差异,为得到相当于正弦励磁下的磁滞回线及磁参数,通过SY-8232交流B^H回线测试仪对测试系统进行标定,利用LabVIEW进行数据处理和分析,实现了误差修正。给出了典型频率、磁感应强度下的测试结果,对B、H曲线进行了频谱分析。该测试系统操作方便,测试准确,具有较好的重复性,可用于重量为300g^3kg的纳米晶磁环在频率为10~100kHz条件下的动态参数的在线测试。

关键词：虚拟仪器纳米晶磁环脉冲励磁磁滞回线磁参数

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影响我国货币政策传导机制发挥的原因及对策

金融理论与教学 2002年第1期 17-19页

作者：马淑华哈尔滨金融高等专科学校金融系黑龙江哈尔滨150030

中央银行制定和实施货币政策的目的是为了调节经济的需要 ,而实现这一目的要依靠货币政策的传导机制来实现。面对我国市场经济的现状 ,货币政策的传导机制具有一定的特点 ,也存在一些问题。我们要立足于现实 ,采取措施 ,积极建立以市场... 详细信息

中央银行制定和实施货币政策的目的是为了调节经济的需要 ,而实现这一目的要依靠货币政策的传导机制来实现。面对我国市场经济的现状 ,货币政策的传导机制具有一定的特点 ,也存在一些问题。我们要立足于现实 ,采取措施 ,积极建立以市场经济为基础的货币政策传导机制 ,不仅要积极完善政策工具本身 ,更要积极创造能使这些工具发挥作用的微观条件和制度环境。

关键词：中国中央银行货币政策传导机制