检索结果-南通市图书馆

掺铒纳米晶与聚合物键合比例对光波导放大器增益性质的影响

在线全文

学校读者我要写书评

暂无评论

发光学报 2023年第4期44卷 678-684页

作者：唐迎李俊符越吾赵丹秦伟平吉林大学电子科学与工程学院集成光电子学国家重点实验室吉林长春130012

将掺铒纳米晶与甲基丙烯酸甲酯(MMA)单体共聚获得的复合聚合物可用作聚合物光波导放大器的增益介质。器件的增益性能与复合聚合物中的纳米粒子浓度密切相关。本文利用高温热分解法成功制备了尺寸均匀的β-NaLu_(50%)Y_(30%)F_(4)∶18%Yb... 详细信息

将掺铒纳米晶与甲基丙烯酸甲酯(MMA)单体共聚获得的复合聚合物可用作聚合物光波导放大器的增益介质。器件的增益性能与复合聚合物中的纳米粒子浓度密切相关。本文利用高温热分解法成功制备了尺寸均匀的β-NaLu_(50%)Y_(30%)F_(4)∶18%Yb^(3+),2%Er^(3+)纳米晶。纳米晶尺寸约16 nm,表面修饰有不饱和基团,因此可以与MMA共聚合得到纳米粒子-聚甲基丙烯酸甲酯(NPs-PMMA)纳米复合材料。通过将纳米粒子的掺杂浓度分别调整为0.1,0.15,0.25 mmol,制备了三组不同键合比例的复合聚合物。下转换发射光谱和透过光谱测试分析表明,随着键合的纳米晶浓度升高,复合聚合物发光强度逐渐提高,但近红外区的光透过率略微下降。使用这三组复合聚合物材料制备的倒脊型光波导放大器,在1550 nm处,器件的相对增益分别为3,3.46,5.61 dB,插入损耗分别为19.20,25.00,26.53 dB。该结果说明,虽然高掺杂浓度的稀土纳米晶造成了散射损耗增加,却有效地提高了增益介质在C波段的发光强度和器件的相对增益。在本文实验中,增加纳米晶浓度带来的增益提高优于散射损耗的增加。

关键词：掺铒纳米晶复合聚合物键合比例光波导放大器

The short-time effects of chemotherapy with combinations of hydroxycamptothecine and oxaliplatin in treatment of advanced colorectal cancer

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

The Chinese-German Journal of Clinical Oncology 2007年第1期6卷 40-43页

作者： Yuanjue Sun Hui Zhao yuewu Guo Feng Lin Xun Cai Xiaochun Tang Yang Yao Department of Medical Oncology the Sixth People＇s Hospital of Shanghai Jiaotong University Shanghai 200233 China

Objective: Although 5-fluarouracil-based chemotherapy has become a standard regimen for treatment of ad- vanced colorectal cancer, the efficacy, as second line therapy, is not high. It is necessary to find a new regimen as a substitute for these patients. The study was to evaluate the short-time effects and toxicity of combination of HCPT plus L-OHP regimen in treatment of advanced colorectal cancer. Methods: Forty-seven patients with pathological evidence of advanced colorectal cancer were enrolled and were treated with HCPT plus L-OHP regimen for 86 cycles. All patients were treated with L-OHP 130 mg/m2 day 1 and HCPT 6 mg/m2 day 1–4, the chemotherapy was repeated every 3 weeks as a cycle. The Short-time efficats and side effects were evaluated after 2 cycles for each patient. Results: 38 cases can be evaluated to short-time effects and achieved the overall response rate (CR+PR) was 36.8%. KPS improved in 20 cases (52.6%). In the total 86 cycles, the leuco- penia occurred in 59 cycles (68.6%),18 cycles (30.5%) in grade III and IV and the diarrhea occurred in 48 cycles (55.8%), 18 cycles (37.5%) in grade III and IV. Conclusion: A satisfied response rate was obtained in advanced colorectal cancer patients treated by HCPT plus L-OHP regimen, especially who were the failure of first-line chemotherapy with 5-FU. The limited-dose toxicity was leucopenia and diarrhea.

关键词：晚期结直肠癌治疗联合化疗奥沙利铂羟基喜树碱短期疗效

基于重复控制的有源电力滤波器6k±1次谐波补偿

在线全文

学校读者我要写书评

暂无评论

电力系统自动化 2016年第16期40卷 125-131页

作者：郑远辉杨苹王月武唐铖华南理工大学电力学院广东省广州市510640 广东省绿色能源技术重点实验室华南理工大学广东省广州市511458 风电控制与并网技术国家地方联合工程实验室华南理工大学广东省广州市511458

采用重复控制(RC)有利于提高有源电力滤波器(APF)的补偿性能。针对三相整流电路产生的6k+1次谐波为正序量,6k-1次谐波为负序量的特点,提出了dq旋转坐标系下的选择性RC内核,用于补偿6k±1次谐波。为消除该RC内核存在的N/6拍延时不为整数... 详细信息

采用重复控制(RC)有利于提高有源电力滤波器(APF)的补偿性能。针对三相整流电路产生的6k+1次谐波为正序量,6k-1次谐波为负序量的特点,提出了dq旋转坐标系下的选择性RC内核,用于补偿6k±1次谐波。为消除该RC内核存在的N/6拍延时不为整数的影响,引入基于Thiran近似法的无限脉冲响应(IIR)滤波器来逼近所需的分数延时特性,提高系统补偿性能。采用重复控制器串联比例—积分(PI)控制器的复合控制结构,并对该复合控制系统进行了理论推导及稳定性分析,进而给出了控制器的详细设计方法。最后通过仿真验证了所提方法的有效性和优越性。

关键词：有源电力滤波器重复控制分数延时稳定性

世为书香家,行为图林范——著名图书馆学家孙云畴教授传略

在线全文

学校读者我要写书评

暂无评论

大学图书馆学报 2015年第2期33卷 113-122页

作者：党跃武四川大学公共管理学院成都610065

介绍毕业于西南联合大学和哥伦比亚大学的著名图书馆学家孙云畴教授的生平事迹,重点反映他在金陵大学(成都)图书馆、哥伦比亚大学图书馆学院、北京大学图书馆学专修科、哈尔滨工业大学图书馆、郑州大学图书馆和华东师范大学图书馆学系... 详细信息

介绍毕业于西南联合大学和哥伦比亚大学的著名图书馆学家孙云畴教授的生平事迹,重点反映他在金陵大学(成都)图书馆、哥伦比亚大学图书馆学院、北京大学图书馆学专修科、哈尔滨工业大学图书馆、郑州大学图书馆和华东师范大学图书馆学系的从业经历。

关键词：孙云畴图书馆学家西南联合大学金陵大学北京大学哥伦比亚大学哈尔滨工业大学郑州大学华东师范大学

Some conifers from Aptian in Yanbian area of Jilin, Northeast China

在线全文

学校读者我要写书评

暂无评论

Global Geology 2013年第2期16卷 59-67页

作者： ZHAO Guowei SUN yuewu ZHANG Ying Research Center of Paleontology and Stratigraphy Jilin University College of Earth Sciences Jilin University Key Laboratory for Evolution of Past Life and Environment in Northeast Asia Ministry of Education (Jilin University) International Center for Geoscience Research and Education in Northeast Asia Jilin University

Some well-preserved conifer leafy shoots and female cones from the Lower Cretaceous Changcai Formation near Fudong of Helong, eastern Jilin, Northeast China are studied. Based on gross morphological and cuticular study, a new species, Elatides helongensis Sun et Zhao (sp. nov.) is described systematically. The new species is characterized by persistent, linear or slightly falcate leaves with obtusely acute apex, attached helically on the shoots. Female cones of the new species are terminal and oval, composed of persistent helically-arranged rhomboidal scales and erect seeds. One erect seed is growing on each scale. Leaf cuticles are hypostomatic. Monocylic stomata are ellipse, composed of 2 sunken guard cells and 4-8 subsidiary cells. Moreover, the cuticles of a young female cone of Pityostrobus yingchengensis Yang are described for the first time.

关键词：针叶树延边地区吉林东北中国叶角质层细胞组成早白垩世

Geometric quantities of lower doubly excited bound states of helium

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2022年第3期31卷 160-164页

作者：周成栋余岳武杨三江乔豪学 School of Physics and Technology Wuhan UniversityWuhan 430072China College of Physics and Electronic Science Hubei Normal UniversityHuangshi 435002China

Expectation values of single electron and interelectronic geometric quantities such as , , , )>, and are calculated for doubly excited 2pnp ^(1)P^(e)(3 ≤ n ≤ 5), 2pnp ^(3)P^(e)(2 ≤ n ≤ 5)and 2pnd ^(1,3)D°(3 ≤ n ≤ 5) states of helium using Hylleraas-B-spline basis set. The energy levels converge to at least 10 significant digits in our *** extrapolated values of geometric quantities except for reach 10 significant digits as well; reaches at least 7 significant digits using a multipole expansion approach. Our results provide a precise reference for future research.

关键词： doubly excited states unnatural parity Hylleraas-B-spline geometric quantities

Exploitation of Waste Heat from a Solid Oxide Fuel Cell via an Alkali Metal Thermoelectric Converter and Electrochemical Cycles

在线全文

学校读者我要写书评

暂无评论

Journal of Donghua University(English Edition) 2021年第6期38卷 549-556页

作者：查静静黄跃武 College of Environmental Science and Engineering Donghua University Shanghai 201620 China

In order to employ the waste heat effectively,a novel three-stage integrated system based upon a solid oxide fuel cell(SOFC),an alkali metal thermoelectric converter(AMTEC)and thermally regenerative electrochemical cycles(TRECs)is put *** the main electrochemically and thermodynamically irreversible losses,the power output and the efficiency of the subsystems and the integrated system are compared,and optimally operating regions for the current density,the power output,and the efficiency of the integrated system are *** demonstrate that the maximum power density of the considered system is up to 7466 W/m2,which allows 18%and 74%higher than that of the conventional SOFC-AMTEC device and the stand-alone fuel cell model,*** is proved that the considered system is an efficient approach to boost energy ***,the influence of several significant parameters on the comprehensive performance of the integrated system is expounded in detail,including the electrolyte thickness of the SOFC,the leakage resistance of the SOFC,and the area ratio between the SOFC electrode and the AMTEC subsystem.

关键词： solid oxide fuel cell(SOFC) thermally regenerative electrochemical cycle alkali metal thermoelectric converter(AMTC) hybrid system performance comparison

在线全文

学校读者我要写书评

暂无评论

技术服务项目HSE管理模式构建与应用

现代工业经济和信息化 2023年第4期13卷 127-128,131页

作者：许跃武上海中核浦原有限公司上海200233

技术服务项目具有项目小而散、地点分布多、人员随机性强、管理能力不高等特点,在技术服务HSE管理领域,形成一套标准化、规范化且行之有效的管理模式确有必要。通过识别专业部门在技术服务HSE管理的良好实践,结合国内外先进管理经验,架... 详细信息

技术服务项目具有项目小而散、地点分布多、人员随机性强、管理能力不高等特点,在技术服务HSE管理领域,形成一套标准化、规范化且行之有效的管理模式确有必要。通过识别专业部门在技术服务HSE管理的良好实践,结合国内外先进管理经验,架构采用“管理办法+实用手册+支持性文件”搭建的技术服务HSE管理模式并实施应用。

关键词：技术服务项目HSE管理安全

核安全文化评估在装备制造企业质保体系有效性提升工作中的运用

在线全文

学校读者我要写书评

暂无评论

现代工业经济和信息化 2023年第3期13卷 187-189,192页

作者：许跃武上海中核浦原有限公司上海200233

核安全文化与核质保体系是涉核企业不可分割的两部分,核质保体系“完整性、符合性”可通过质保人员的努力得以实现,唯独“有效性”因为人的主观意识和文化修养较难保证。基于此,针对核质保体系有效性不足进行根本原因分析,找出关键影响... 详细信息

核安全文化与核质保体系是涉核企业不可分割的两部分,核质保体系“完整性、符合性”可通过质保人员的努力得以实现,唯独“有效性”因为人的主观意识和文化修养较难保证。基于此,针对核质保体系有效性不足进行根本原因分析,找出关键影响因素,以核安全文化八大原则为依据,建立评估指标体系,加强核安全文化建设,不断推进质保体系有效性提升,为涉核企业提供借鉴。

关键词：核安全文化质量保证有效性