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Study on the micro-region structure and properties of two dithienothiophene-dicarboxylic acids

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Chinese Science Bulletin 2010年第6期55卷 478-483页

作者： WANG DeKun JIANG XiaoHong ZHAO ChunMei WANG zhihua WANG Hua du Zu Liang Key Laboratory of Special Functional Materials of Ministry of Education Henan University Kaifeng 475004 China

Self-organized dithieno [3,2-b:2',3'-d] thiophene-2,5-dicarboxylic acid (A) and dithieno [2,3-b:3',2'-d] thiophene-2,5-dicarboxylic acid (B) films were prepared through solvent-induced order-disorder transition *** arrangement of the two molecules on substrates were observed by atomic force microscopy (AFM),which demonstrated that A was arranged orderly in a certain angle on mica,while B was flat-flying on *** optical and conductance properties in micro region of these two compound films were characterized by UV-vis absorption spectroscopy,fluorescence spectroscopy and conductive atomic force microscopy (C-AFM).The results revealed that the fluorescence and absorption peaks of A had a large red shift in comparison with those of *** conductance of the J-aggregates for A is three orders magnitude higher than that of *** is concluded that the large conductance difference mainly comes from different aggregation structures and orientations of these two molecules on substrate.

关键词：微区结构导电原子力显微镜酸性质紫外可见吸收光谱二元电导性能荧光光谱分子取向

dural sinus septum:an underlying cause of cerebral venous sinus stenting failure and complications

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Stroke & Vascular Neurology 2024年第2期9卷 174-180页

作者： Yangang Zhao Xiaolan Zhang Bin Lv Jun Wang Xinfeng Liu zhihua du Fang Cui Baoming Li Xing Chen Xiangyu Cao Beijing Advanced Innovation Center for Biomedical Engineering School of Engineering MedicineBeihang UniversityBeijingChina Department of Neurology Hainan Hospital of Chinese PLA General HospitalSanyaHainanChina Department of Neurology Chinese PLA General HospitalBeijingChina

Objectives The presence of dural sinus septum has long been identified anatomically but is often neglected for its clinical *** findings revealed the association of dural sinus septum with venous sinus stenting failure and complications supported by clinical *** This retrospective study included 185 consecutive patients treated with cerebral venous sinus stenting from January 2009 to May *** identified the dural sinus septa using digital subtraction angiography(DSA)and classified them into three types based on their *** septa at the transverse sinus were defined as typeⅠ,those at the junction between the transverse sinus and sigmoid sinus were defined as typeⅡand those at the sigmoid sinus were defined as typeⅢ.Based on the anatomic features and neuroimaging clues,we investigated the correlation of dural sinus septa with stenting failure and *** 32(17.1%)out of 185 patients(121 with idiopathic intracranial hypertension and 64 with venous pulsatile tinnitus)were identified with dural sinus septa by *** than half of the septa were typeⅠ(18/32,56.2%),followed by typeⅡ(11/32,34.4%)and typeⅢ(3/32,9.4%).The dural sinus septa caused three stenting failures and complications,including one case of venous sinus injury with subdural haemorrhage and two cases of incomplete stent *** analysis revealed that the presence of dural sinus septum(pdural sinus septum is a common structure in the cerebral venous *** found that the presence of dural sinus septa introduces uncertainties to cerebral venous sinus stenting and suggested precautions and ingenious skills in imaging and treatment.

关键词： septum cerebral venous

Geochemical characteristics of REEs and Sr, Nd isotopes of hydrothermal chimney and their geological significance in the Okinawa Trough

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Chinese Science Bulletin 1999年第S2期44卷 148-149页

作者： MENG Xianwei, CHEN zhihua and du Dewen First Institute of Oceanography, State Oceanic Administration, Qingdao 266003, China First Institute of Oceanography State Oceanic Administration Qingdao 266003 China

THIS note first researches the geochemical characteristics of rare earth elements （REEs） and Sr and Ndisotopes of hydrothermal chimney in the middle Okinawa Trough. On this basis, the sources of mineralforming material and mechanisms of mineralization are discussed. 1 Analysis methods and results A hydrothermal chimney was obtained from theIsuzu depression in the middle Okinawa Trough andsamples for analysis were handpicked from *** samples belong to two types of ores, respectively,in which samples 360-1, 360-5 and 360-8 are of Cu-Znsulfide type and 159H is of barite-amorphous SiO2type. REEs were analyzed by TQ-TURBO II ICP-

关键词： hydrothermai chimney rare earth elements Sr and Nd isotopes.

ISOMORPHISMS OF CIRCULANT DIGRAPHS OF DEGREE 3

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Applied Mathematics(A Journal of Chinese Universities) 1996年第1期11卷 115-123页

作者： HUANG QIONGXIANG du zhihua Department of Mathematics, Xinjiang University, Urumuqi 830046. Department of Mathematics, Xinjiang Nprmal University Urumuqi 830054 Department of Mathematics Xinjiang University Urumuqi Department of Mathematics Xinjiang Normal University Urumuqi

In this paper, we introduce a new approach to characterize the isomor-phisms of circulant digraphs. In terms of this method, we completely determine theisomorphic classes of circulant digraphs of degree 3. In particul... 详细信息

关键词： circulant digraph isomorphism Adam's conjecture.

Tong-Luo-San-Jie Formula External Application on Bone Cancer Pain

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Tong-Luo-San-Jie Formula External Application on Bone Cancer...

单位圆周上正交多项式渐近分析的Riemann-Hilbert方法

第十四届全国中药和天然药物学术研讨会

作者： Fangyuan Wang Juyong Wang Changsheng Dong Qing Wang Ying Lin zhihua du Longhua Hospital Shanghai University of Traditional Chinese Medicine

Objective To exploring the effects and mechanisms of TLSJ Formula on bone cancer pain in rat *** The Walker 256 cells(1x10 cells/ml) were injected into the abdominal cavities of the rats(70-90 g).After seven days,the cells collected from ascitic fluid were injected into the rats’ bone cavity in the right pelvic *** the mechanisms of TLSJ Formula’s action on cancer pain by assessing both mechanical and thermal sensitivity,the time course of bone mineral density(BMD),and the conditioned place preference(CPP) *** TLSJ treatment significantly restored bone cancer-induced decreasing of PWL and mechanical threshold compared to vehicle *** also significantly repaired cancer-induced decreasing of BMD levels and decreased the destruction such as bone marrow and bone ***,it showed that TLSJ Formula produced CPP effects to the bone cancer pain *** These results suggests that TLSJ Formula not only can inhibit cancer induced bone destruction and hyperalgesia but also produced CPP *** suggests that this formula may be useful in managing cancer pain and that it may act by decreased the destruction such as bone marrow and bone loss.

关键词： Tong-Luo-San-Jie Formula Chinese herbs bone cancer pain.

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数学年刊（A辑） 2006年第5期27卷 701-718页

作者：杜志华杜金元武汉大学数学与统计学院武汉430072

在单位圆周上考虑带特定权函数的正交多项式,利用Deift P．和Zhou X．所引进的关于振荡型Riemann-Hilbert问题的最速下降法,建立了这类正交多项式在整个复平面上的强渐近公式,发展和改进了一些经典结果．

关键词：正交多项式 Riemann-Hilbert问题最速下降法渐近分析

530MW超临界机组对冲燃烧锅炉低氮燃烧贴壁风系统数值计算

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动力工程学报 2017年第6期37卷 425-431页

作者：杜智华蒙毅孙军西安热工研究院有限公司西安710032

为了有效预防水冷壁高温腐蚀、控制NO_x排放量,进行了某墙式对冲燃烧锅炉燃烧器低氮配风优化设计与改造,在主燃烧区加装"非对称矩形高速直流贴壁风"系统.结果表明:实测水冷壁贴壁气氛大幅改善,贴壁O_2体积分数明显升高,由0.3%升高至3.0%... 详细信息

为了有效预防水冷壁高温腐蚀、控制NO_x排放量,进行了某墙式对冲燃烧锅炉燃烧器低氮配风优化设计与改造,在主燃烧区加装"非对称矩形高速直流贴壁风"系统.结果表明:实测水冷壁贴壁气氛大幅改善,贴壁O_2体积分数明显升高,由0.3%升高至3.0%;炉膛前后墙贴壁烟温呈下降趋势,降幅100K左右,有效降低了水冷壁高温爆管风险.

关键词：对冲燃烧锅炉低氮燃烧贴壁风高温腐蚀数值计算

光驱动的CoO_(x)/WO_(3-x)光热协同催化CO_(2)还原

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复合材料学报 2023年第9期40卷 5158-5169页

作者：杨娟田然王大钊戴俊杜智华河南理工大学安全科学与工程学院焦作454003 煤炭安全生产与清洁高效利用省部共建协同创新中心焦作454003 河南理工大学化学化工学院焦作454003

基于半导体光催化还原的人工光合成技术可在室温常压下将CO_(2)转化为碳基燃料,被认为是同时缓解能源短缺和环境危机的理想策略,但因已有光催化剂对太阳光利用不足、光生电荷复合快,致使CO_(2)光还原能量转换效率仍较低。采用水热法并... 详细信息

基于半导体光催化还原的人工光合成技术可在室温常压下将CO_(2)转化为碳基燃料,被认为是同时缓解能源短缺和环境危机的理想策略,但因已有光催化剂对太阳光利用不足、光生电荷复合快,致使CO_(2)光还原能量转换效率仍较低。采用水热法并结合表面浸渍过程首次制备出无定型CoOx/WO_(3-x)复合光催化剂,通过XRD、TEM、XPS、EPR和紫外-可见-近红外吸收光谱等测试技术对催化剂的晶相组成、微观形貌、光吸收特性与氧空位缺陷进行系统表征。CO_(2)光还原实验结果表明可见-近红外光照射3 h后,WO_(3-x)为催化剂仅可检测到3.2μmol·g^(−1)的CH4,复合CoO_(x)可显著提升WO_(3-x)的CO_(2)光催化还原性能,相同条件下最优催化剂2.5wt%CoO_(x)/WO_(3-x)的CO与CH4产生量分别可达78.2和19.7μmol·g^(−1)。引入氧空位可在WO_(3-x)的能带结构中形成一新的中间能级,增强近红外光吸收并使催化剂表面产生局部温升;复合CoO_(x)可在调控WO_(3-x)导带电势的同时,增强光生电荷的分离与迁移,光热效应和CoO_(x)助催化剂的协同作用是CO_(2)光催化转化性能增强的主要原因。此外,复合光催化剂CoO_(x)/WO_(3-x)具有优异的长期催化与结构稳定性。

关键词：光催化 WO_(3-x) CoO_(x) CO_(2)光还原光热协同

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一种高效均匀复合型菲涅尔透镜设计

光通信技术 2017年第11期41卷 1-4页

作者：郝宏刚杜志华重庆邮电大学光电工程学院重庆400065

针对可见光通信系统中菲涅尔透镜天线无法兼顾高聚光效率和均匀性的问题,设计了一款复合型菲涅尔透镜。通过采用分区法将透镜分成内环区和外环区,提高了菲涅尔透镜的聚光效率,并结合分布式焦点法对透镜结构进行优化,改善了聚光光斑能量... 详细信息

针对可见光通信系统中菲涅尔透镜天线无法兼顾高聚光效率和均匀性的问题,设计了一款复合型菲涅尔透镜。通过采用分区法将透镜分成内环区和外环区,提高了菲涅尔透镜的聚光效率,并结合分布式焦点法对透镜结构进行优化,改善了聚光光斑能量均匀性。仿真结果表明,该复合型菲涅尔透镜实现了高聚光效率下的能量均匀分布,适用于高增益、短焦距和小视场角的可见光通信系统。

关键词：可见光通信复合型菲涅尔透镜聚光效率均匀性