检索结果-南通市图书馆

Chinese Chemical Letters 2006年第7期17卷 933-936页

作者： Sha Hua QIAN Xue Qin LI Han LIN Mei xiao hong Bing deng Luo Jing XIANG College of Resource and Environmental Science Wuhan University Wuhan 430072

A novel method of ultra-trace Cd（Ⅱ） preconcentration with nanometer-size TiO2 colloid and determination by graphite furnace atomic adsorption spectrometry（GFAAS） with slurry sampling was first advanced in this paper. The adsorption efficiency of nanometer-size TiO2 colloid for ultra-trace Cd（Ⅱ） could reach above 96% in a short time when the pH value was between 5 and 6. Other problems were also studied, such as adsorption capacity, nanometer-size TiO2 colloid dosage, effect of coexistent ions. The detection limit（3σ） and the relative standard deviation （R.S.D） of this method were 4.46.103 μg/L and 1.30%（n=7）, respectively. The method was successfully applied to the analysis of environmental samples with recoveries between 93.8% and 96.4%.

关键词： Nanometer-size TiO2 colloid Cd(Ⅱ) GFAAS slurry sampling.

High-risk endometrial cancer may be benefit from adjuvant radiotherapy plus chemotherapy

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Cancer Research 2012年第4期24卷 332-339页

作者： Jin-Wei Miao xiao-hong deng Department of Gynecologic Oncology Beijing Obstetrics and Gynecology HospitalCapital Medical University

Objective： To present patterns of practice and outcomes in the adjuvant treatment of intermediate- and high-risk endometrial cancer. Methods： Retrospective data on 224 women with intermediate-risk and high-risk endometrial cancer from 1999 to 2006 were reviewed. All patients underwent surgical staging. Patterns of adjuvant treatment, consisting of pelvic radiotherapy, chemotherapy, and radiotherapy plus chemotherapy, were assessed. The 3- and 5-year disease-specific survival （DSS） rates were calculated using the Kaplan-Meier method. Results： The difference in 5-year DSS rate was statistically significant between adjuvant group and non-adjuvant group （80.65% vs. 63.80%, P=0.040）. In 110 high-risk patients who underwent adjuvant treatment, both 5-year DSS rate and recurrent rate were significantly different in combined radiotherapy and chemotherapy group compared with radiotherapy alone and chemotherapy alone groups （DSS rate, P=0.049; recurrent rate, P=0.047）. In 83 intermediate-risk women who underwent adjuvant treatment, there was no significant difference in 5-year DSS rate and recurrence rate among the combined radiotherapy and chemotherapy, radiotherapy alone and chemotherapy alone groups （DSS rate, P=0.776; recurrent rate, P=0.937）.

关键词： Adjuvant treatment chemotherapy endometrial cancer radiotherapy recurrence

ENHANCEMENT　OF　EXCIMER　FORMATION　AND　PHOTODIMERIZATIONON　OF　9－ANTHRYLMETHYL　DODECANOATE　VIA　AGGREGATION

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1994年第4期5卷 287-290页

作者： Xi LI xiao hong deng xiao hong WANG and Chen Ho TUNG(The Laboratory of Photochemistry, Institute of PhotographicChemistry, Academia Sinica, Beijing 100101)

The diluted solution of 9-anthrylmethyl dodecanoate in aqueous organic binary mixed solvents exhibits strong excimer fluorescence. Photoirradiation of this solution results in the dimerization of the anthracene nucleus at 9, 10-positions to form almost exclusively the head-to-head (h-h) dimer. This is contrary to the photodimerization in organic solvents, where the major product is the head-to-tail (h-t) dimer.

关键词： VIA DODECANOATE ANTHRYLMETHYL AGGREGATION AND

Bowen’s Disease on the Left Fifth Finger Successfully Treated with Photodynamic Therapy: A Case Report

在线全文

学校读者我要写书评

暂无评论

International Journal of Dermatology and Venereology 2022年第1期5卷 56-58页

作者： Wei-hong Wu Maher Al-Muriesh xiao-hong deng Chang-Zheng Huang Department of Dermatology China Resources and WISCO General HospitalWuhanHubei 430080China Department of Dermatology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei 430022China

Introduction:Bowen’s disease is a squamous cell carcinoma in *** is more common on the head and neck,less common on the nail units in which it usually involves the second to fourth fingers of both ***,we report a case of Bowen’s disease involving the left fifth finger of a 78-year-old Chinese *** presentation:The patient was treated with nine sessions of topical 5-aminolevulinic acid-photodynamic therapy(5-ALA-PDT),with a one-week interval between *** 5-ALA cream was applied to the lesion and the region surrounding its marginal diameter by 0.5 *** 3-4 hours,the lesion was irradiated with 635±10 nm red light at an intensity of 80mw/cm2 for *** excellent result with a topical 5-ALA-PDT was ***:PDT involves the application of a combination of a photosensitizing drug and light to cause selective damage to the target *** is more appropriate than surgical excision for lesions located in sites with poor healing ***:PDT appears to be effective,safe and has a better cosmetic outcome in the treatment of Bowen’s disease of the finger unit.

关键词： Bowen’s disease treatment photodynamic therapy

Smart Cellulose‑Based Janus Fabrics with Switchable Liquid Transportation for Personal Moisture and Thermal Management

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第1期17卷 333-347页

作者： Jianfeng Xi Yanling Lou Liucheng Meng Chao deng Youlu Chu Zhaoyang Xu Huining xiao Weibing Wu Jiangsu Co‑Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsJiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass MaterialsNanjing Forestry UniversityNanjing 210037People’s Republic of China College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037People’s Republic of China Department of Chemical Engineering University of New BrunswickFrederictonNB E3B 5A3Canada Macromolecular Chemistry and Bavarian Polymer Institute University of BayreuthBayreuth 95440Germany

The Janus fabrics designed for personal moisture/thermal regulation have garnered significant attention for their potential to enhance human ***,the development of smart and dynamic fabrics capable of managing personal moisture/thermal comfort in response to changing external environments remains a ***,a smart cellulose-based Janus fabric was designed to dynamically manage personal moisture/*** cotton fabric was grafted with N-isopropylacrylamide to construct a temperature-stimulated transport ***,hydrophobic ethyl cellulose and hydrophilic cellulose nanofiber were sprayed on the bottom and top sides of the fabric to obtain wettability *** fabric exhibits anti-gravity directional liquid transportation from hydrophobic side to hydrophilic side,and can dynamically and continuously control the transportation time in a wide range of 3–66 s as the temperature increases from 10 to 40℃.This smart fabric can quickly dissipate heat at high temperatures,while at low temperatures,it can slow down the heat dissipation rate and prevent the human from becoming too *** addition,the fabric has UV shielding and photodynamic antibacterial properties through depositing graphitic carbon nitride nanosheets on the hydrophilic *** smart fabric offers an innovative approach to maximizing personal comfort in environments with significant temperature variations.

关键词： Directional water transport Cotton fabric Anti-gravity directional liquid transportation Janus wettability

New band-notched UWB antenna

在线全文

学校读者我要写书评

暂无评论

Journal of Shanghai University(English Edition) 2009年第2期13卷 142-145页

作者：何小祥邓宏伟 College of Information Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016P.R.China

A simple and compact ultra wideband （UWB） printed monopole antenna with band-notched performance is proposed in this paper. The antenna is partially grounded so that the Q value is depressed and the impedance bandwidth is broadened. A small strip bar is loaded on each arm of the similar U-shaped radiator. The impedance bandwidth of the antenna overlap with IEEE 802.11a is rejected consequently. The geometry parameters of the antenna are investigated and optimized with HFSS. The measured bandwidth of the proposed antenna occupies about 7.89 GHz covering from 3.05 GHz to 10.94 GHz with expected notched band from 4.96 GHz to 5.98 GHz. A quasi-omnidirectional and quasi-symmetrical radiation pattern in the whole band is also obtained. As a result, a UWB wireless communication system can be simplified with the band-notched UWB antenna presented.

关键词： wireless communications ultra wideband (UWB) band-notched planar antenna printed monopole antenna

在线全文

学校读者我要写书评

暂无评论

多种有序钙钛矿结构的高压制备与特殊物性

物理学报 2017年第3期66卷 1-22页

作者：殷云宇王潇邓宏芟周龙戴建洪龙有文中国科学院物理研究所北京凝聚态物理国家实验室(筹)北京100190 量子物质科学协同创新中心北京100190

具有ABO_3钙钛矿或类似结构的强关联电子体系是凝聚态物理研究的重要前沿领域,而高压是制备新型钙钛矿特别是A位与/或B位有序钙钛矿材料的有效手段.在这些有序钙钛矿中,因A,B位可同时容纳过渡金属离子,因而可导致A-A,B-B,A-B等多种磁电... 详细信息

具有ABO_3钙钛矿或类似结构的强关联电子体系是凝聚态物理研究的重要前沿领域,而高压是制备新型钙钛矿特别是A位与/或B位有序钙钛矿材料的有效手段.在这些有序钙钛矿中,因A,B位可同时容纳过渡金属离子,因而可导致A-A,B-B,A-B等多种磁电相互作用的出现,进而诱导系列新颖有趣的物理现象.本文介绍高压下制备的几种化学式为AA'_3B_4O_(12)的新型A位有序钙钛矿以及化学式为AA'_3B_2B'_2O_(12)的A,B位同时有序的钙钛矿体系.在LaMn_3Cr_4O_(12)中发现了具有立方钙钛矿结构的磁电多铁性,为多铁新材料探索与新机理研究提供范例;在CaCu_3Fe_2Os_2O_(12)中发现了远高于室温的亚铁磁半导体行为,并指出A位磁性离子的引入可大大增加磁相互作用强度从而大幅度提高磁有序温度;在LaMn_3Ni_2Mn_2O_(12)中观察到A位磁性离子调控的B位Ni^(2+)/Mn^(4+)子晶格正交自旋有序结构.以上研究结果为探索新型磁电多功能钙钛矿材料提供了重要参考.

关键词：高压合成有序钙钛矿多铁性自旋有序

Advances in therapies using mesenchymal stem cells and their exosomes for treatment of peripheral nerve injury:state of the art and future perspectives

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第11期20卷 3151-3171页

作者： Fatima Aldali Chunchu deng Mingbo Nie hong Chen Department of Rehabilitation Medicine Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina Department of Orthopedics Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina

“Peripheral nerve injury”refers to damage or trauma affecting nerves outside the brain and spinal *** nerve injury results in movements or sensation impairments,and represents a serious public health *** severed peripheral nerves have been effectively joined and various therapies have been offered,recovery of sensory or motor functions remains limited,and efficacious therapies for complete repair of a nerve injury remain *** emerging field of mesenchymal stem cells and their exosome-based therapies hold promise for enhancing nerve regeneration and *** stem cells,as large living cells responsive to the environment,secrete various factors and *** latter are nano-sized extracellular vesicles containing bioactive molecules such as proteins,microRNA,and messenger RNA derived from parent mesenchymal stem *** have pivotal roles in cell-to-cell communication and nervous tissue function,offering solutions to changes associated with cell-based *** ongoing investigations,mesenchymal stem cells and mesenchymal stem cell-derived exosome-based therapies are in the exploratory stage.A comprehensive review of the latest preclinical experiments and clinical trials is essential for deep understanding of therapeutic strategies and for facilitating clinical *** review initially explores current investigations of mesenchymal stem cells and mesenchymal stem cell-derived exosomes in peripheral nerve injury,exploring the underlying ***,it provides an overview of the current status of mesenchymal stem cell and exosomebased therapies in clinical trials,followed by a comparative analysis of therapies utilizing mesenchymal stem cells and ***,the review addresses the limitations and challenges associated with use of mesenchymal stem cell-derived exosomes,offering potential solutions and guiding future directions.

关键词： clinical trials exosome extracellular vesicles mesenchymal stem cells nerve regeneration peripheral nerve injury pre-clinical experiments

在线全文

学校读者我要写书评

暂无评论

磁化后掺水乳化重油分散度的实验研究

燃料化学学报 2001年第5期29卷 442-445页

作者：肖红飞邓云丽湘潭工学院资源工程系湖南湘潭411201

乳化重油的分散相 (水 )微粒大小对重油掺水乳化燃烧技术的应用效果有很大影响。本人在过去实验的基础上 ,用光学反射显微镜法对磁场作用下掺水乳化重油中分散相 (水 )的分散度进行了测定 ,研究了乳化重油的分散度与磁场强度、温度以及... 详细信息

乳化重油的分散相 (水 )微粒大小对重油掺水乳化燃烧技术的应用效果有很大影响。本人在过去实验的基础上 ,用光学反射显微镜法对磁场作用下掺水乳化重油中分散相 (水 )的分散度进行了测定 ,研究了乳化重油的分散度与磁场强度、温度以及流速之间的关系 ,实验结果表明 :磁化后有利于乳化重油的微细化 ,且效果比较显著 ;温度的升高有利于分散相 (水 )的微细化 ,兼顾能耗和燃油的发泡、沸腾现象 ,以及磁化后温度的升高对分散度的影响减少 ,有一个合理的温度范围 ;磁化后分散度与流速的关系呈峰值关系 ,本实验中流速较佳值为 8m s ;磁场强度的增大也有利于微细化 ,磁场强度太高或太低均不会取得太好的处理效果 ,在 10 0 0GS～ 140

关键词：乳化油分散度磁化燃烧重油燃烧利用率水

Graphene Aerogel Composites with Self‑Organized Nanowires‑Packed Honeycomb Structure for Highly Efficient Electromagnetic Wave Absorption

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第2期17卷 533-547页

作者： xiao You Huiying Ouyang Ruixiang deng Qiuqi Zhang Zhenzhong Xing xiaowu Chen Qingliang Shan Jinshan Yang Shaoming Dong State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Key Laboratory of Inorganic Coating Materials CAS Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Structural Ceramics and Composites Engineering Research Center Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210People’s Republic of China School of Materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China University of Chinese Academy of Sciences Beijing 100039People’s Republic of China

With vigorous developments in nanotechnology,the elaborate regulation of microstructure shows attractive potential in the design of electromagnetic wave ***,a hierarchical porous structure and composite heterogeneous interface are constructed successfully to optimize the electromagnetic loss *** macro–micro-synergistic graphene aerogel formed by the ice template‑assisted 3D printing strategy is cut by silicon carbide nanowires(SiC_(nws))grown in situ,while boron nitride(BN)interfacial structure is introduced on graphene *** unique composite structure forces multiple scattering of incident EMWs,ensuring the combined effects of interfacial polarization,conduction networks,and magnetic-dielectric ***,the as-prepared composites present a minimum reflection loss value of−37.8 dB and a wide effective absorption bandwidth(EAB)of 9.2 GHz(from 8.8 to 18.0 GHz)at 2.5 ***,relying on the intrinsic high-temperature resistance of SiC_(nws) and BN,the EAB also remains above 5.0 GHz after annealing in air environment at 600℃ for 10 h.

关键词： Hierarchical porous structure Interface High-temperature resistance Graphene aerogel composites Electromagnetic wave absorption