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Template synthesis of MnO_2/CNT nanocomposite and its application in rechargeable lithium batteries

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Transactions of Nonferrous Metals Society of China 2011年第9期21卷 2010-2014页

作者：邹敏敏艾邓均刘开宇中南大学化学化工学院长沙410083

Nanostructured MnO2/CNT composite was synthesized by a soft template approach in the presence of Pluronic P123 surfactant. The product was characterized by X-ray diffraction, thermogravimetric and differential thermal analyses, Fourier transformed infrared spectroscopy and high-resolution transmission electron microscopy. The results show that the sample consists of poor crystalline α-MnO2 nanorods with a diameter of about 10 nm and a length of 30-50 nm, which absorb on the carbon nanotubes. The electrochemical properties of the product as cathode material for Li-MnO2 cell are evaluated by galvanostatic charge-discharge and electrochemical impedance spectroscopy （EIS）. Compared with pure MnO2 electrode, the MnO2/CNT composite delivers a much larger initial capacity of 275.3 mA-h/g and better rate and cycling performance.

关键词： MnO2/CNT soft template nanocomposite rechargeable lithium batteries

单斜Li_3V_2(PO_4)_3/C复合材料的制备及其电化学性能

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无机化学学报 2009年第10期25卷 1717-1723页

作者：艾邓均刘维芳唐安平段浩刘开宇中南大学化学化工学院长沙410083 中南大学材料科学与工程学院长沙410083 湖南科技大学化学化工学院湘潭411201

以LiOH·H2O、V2O5、H3PO4和蔗糖为原料，采用软化学法制备了锂离子电池正极材料Li3V2（PO4）3／C。通过X射线衍射（XRD）、扫描电镜（SEM）对产物的结构和形貌进行表征，采用恒电流充放电、电化学阻抗考察了产物的电化学性能。结果表... 详细信息

以LiOH·H2O、V2O5、H3PO4和蔗糖为原料，采用软化学法制备了锂离子电池正极材料Li3V2（PO4）3／C。通过X射线衍射（XRD）、扫描电镜（SEM）对产物的结构和形貌进行表征，采用恒电流充放电、电化学阻抗考察了产物的电化学性能。结果表明，当煅烧温度达到700℃时，杂质相衍射峰消失，所得的样品为纯相的单斜Li3V2（PO4）3，颗粒粒度为1—2μm；在3．0～4．5V电压范围内以0．2C倍率充放电，首次放电比容量达到148．2mAh·g^-1，第50次循环比容量仍为144mAh·g^-1，容量保持率为97％，具有良好的循环性能；另外，样品还具有很好的倍率性能和高温性能。

关键词：锂离子电池 Li3V2(PO4)3 软化学法电化学性能

P123辅助合成的Li_3V_2(PO_4)_3/C的电化学性能

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电池 2012年第4期42卷 203-206页

作者：马珺元志红艾邓均刘开宇中南大学化学化工学院湖南长沙410083

以CH3COOLi、V2O5、H3PO4、草酸以及表面活性剂P123（EO20PO70EO20）为原料，采用液相法合成了亚微米级的Li3V2（PO4）3／C，通过XRD、SEM和电化学性能分析，研究了煅烧温度对产物的影响。用P123辅助合成的Li3V2（PO4）3／C粒径减小，... 详细信息

以CH3COOLi、V2O5、H3PO4、草酸以及表面活性剂P123（EO20PO70EO20）为原料，采用液相法合成了亚微米级的Li3V2（PO4）3／C，通过XRD、SEM和电化学性能分析，研究了煅烧温度对产物的影响。用P123辅助合成的Li3V2（PO4）3／C粒径减小，电化学性能提高。在850℃下煅烧合成的Li3V2（PO4）3／C，晶体生长完善，可逆性最好，电荷转移阻抗最小。在3．0—4．3V循环，0．1C首次放电比容量为128．7mAh／g，5．0C放电比容量为104．3mAh／g，容量保持率为81％。

关键词：锂离子电池磷酸钒锂[Li3V2(PO4)3] P123 电化学性能

缺氧时视网膜血管内皮细胞缺氧诱导因子-1α及其mRNA的时序性表达(英文)

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国际眼科杂志 2005年第2期5卷 225-228页

作者：邓爱军姜德咏中南大学湘雅二医院眼科中国湖南省长沙市410011

目的:探讨在缺氧状态下视网膜血管内皮细胞缺氧诱导因子-1α(H IF-1α)及其m RNA 表达的时空规律。方法:对分离的牛视网膜血管内皮细胞分别进行常规和CoCl2模拟缺氧培养,采用免疫组化和逆转录多聚酶链反应(RT-PCR)检测不同缺氧时间HIF-... 详细信息

目的:探讨在缺氧状态下视网膜血管内皮细胞缺氧诱导因子-1α(H IF-1α)及其m RNA 表达的时空规律。方法:对分离的牛视网膜血管内皮细胞分别进行常规和CoCl2模拟缺氧培养,采用免疫组化和逆转录多聚酶链反应(RT-PCR)检测不同缺氧时间HIF-1α及其mRNA的表达。结果:正常对照组HIF-1α有极低表达,在缺氧1h时表达量显著上升,4h 达到高峰,16h后下降。与对照组比较,各缺氧组HIF-1α的表达均有显著性差异(P<0.01)。但各缺氧组HIF-1αmRNA的表达无明显差异。结论:视网膜血管内皮细胞在缺氧早期HIF-1α表达有短暂、迅速的增加,但其mRNA的表达无明显变化,提示缺氧可以促进视网膜血管内皮细胞HIF-1α的表达,但不是在基因的转录水平。

关键词：缺氧诱导因子-1α 血管内皮细胞时序性表达 HIF-1α 逆转录多聚酶链反应 mRNA表达缺氧状态下 CoCl2 正常对照组显著性差异缺氧培养牛视网膜缺氧时间免疫组化转录水平低表达表达量

Is it possible to foot reflexology for infants with sensorineural hearing loss?

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World Journal of Clinical Cases 2025年第2期13卷 1-4页

作者： Min ai Hang-Hang Zhang jun-Bang Feng Chuan-Ming Li Wen-Jing Wang Meng-Die Hu Department of Anesthesiology Nanan District People's Hospital of ChongqingChongqing 400060China Department of Breast and Thyroid Surgery Chongqing Bishan District Maternal and Child Health Care HospitalChongqing 402760China Department of Medical Imaging Chongqing University Central HospitalChongqing 400014China

Foot reflexology is a non-invasive and safe complementary therapy that works by massaging the reflex zones of the feet and exerts systemic or whole-body regulation through meridian nerve *** therapy is commonly used in the treatment of various conditions such as autism and Parkinson's ***,there is limited reporting on the use of foot reflexology therapy for infants with sensorineural hearing loss(SNHL).Currently,there is no definitive conclusion on how foot reflexology therapy can influence *** editorial holds some guiding significance regarding this clinical *** aim is to present physiological evidence of how foot reflexology therapy can impact infants with SNHL,thereby enhancing clinician’s awareness of foot reflexology in treating infants with SNHL.

关键词： Foot reflexology Sensorineural Hearing Loss Future perspectives Limitations Neural conduction

Almost Sure Convergence and Complete Convergence for the Weighted Sums of Martingale Differences

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Wuhan University Journal of Natural Sciences 1999年第3期4卷 278-284页

作者： ai-jiao, deng Jing-jun, Liu College of Mathematical and Computer Sciences Wuhan University Wuhan China

Let {(D n, FFFn),n/->1} be a sequence of martingale differences and {a ni, 1≤i≤n,n≥1} be an array of real constants. Almost sure convergence for the row sums ?i = 1n ani D1\sum\limits_{i = 1}^n {a_{ni} D_1 } are discussed. We also discuss complete convergence for the moving average processes underB-valued martingale differences assumption.

关键词： complete convergence almost sure convergence weighted sums, martingale differences moving average processes

A high-Nb-TiAl alloy with ultrafine-grained structure fabricated by cryomilling and spark plasma sintering

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Rare Metals 2023年第5期42卷 1678-1685页

作者： Hao deng Yong-Qiang Wei jun Tang ai-jun Chen Long-Qing Chen Zu-Xi Xia Key Laboratory of Radiation Physics and Technology of Ministry of Education Institute of Nuclear Science and TechnologySichuan UniversityChengdu610064China The Second Research Institute of Civil Aviation Administration of China(CAAC) Chengdu610064China

In this work,an ultrafine-grained high-Nb-TiAl alloy with a nominal composition of Ti-45Al-8Nb-0.2W-0.2B(at%)was prepared by cryomilling and subsequent spark plasma sintering(SPS)*** chemical composition,particle size,morphology and crystallite size of cryomilled powder were *** is found that cryomilling can effectively reduce the particle size and enhance grain *** ingots sintered at 900 and 1000℃ show an equiaxed near-γmicrostructure with grain sizesain achieve 1310,2174,578 MPa and 16.8%,*** reasons for the effect of cryomilling and the mechanical behavior of sintered ingots were *** is suggested that cryomilling in combination with SPS is an effective way to synthesize high-NbTiAl alloy with ultrafine-grained structure.

关键词： Cryomilling Spark plasma sintering Titanium aluminide Ultrafine-grained structure

TNP-470对人脐静脉内皮细胞生长的抑制作用

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国际眼科杂志 2005年第6期5卷 1146-1149页

作者：王平姜德咏邓爱军李雯霖李才锐中南大学湘雅二医院眼科中国湖南省长沙市410011

目的:观察TNP-470对人脐静脉内皮细胞系ECV-304细胞生长的影响.方法:采用MTT、细胞生长曲线、倒置显微镜形态学观察、荧光染色、流式细胞术等方法观察不同浓度TNP-470对ECV-304细胞形态、细胞增殖和细胞周期的影响.结果:MTT结果显示:在... 详细信息

目的:观察TNP-470对人脐静脉内皮细胞系ECV-304细胞生长的影响.方法:采用MTT、细胞生长曲线、倒置显微镜形态学观察、荧光染色、流式细胞术等方法观察不同浓度TNP-470对ECV-304细胞形态、细胞增殖和细胞周期的影响.结果:MTT结果显示:在低浓度(0.2μg/L)时,TNP-470对ECV-304增殖无明显抑制作用,从2μg/L开始产生抑制作用,且该抑制作用具有量效关系,IC50值为305μg/L;生长曲线:20,200,2000μg/LTNP-470处理细胞后,细胞增殖被抑制,且具有剂量—时相依赖性;倒置相差显微镜下观察:各时间段对照组细胞生长状态正常,排列整齐呈铺路石样;从2μg/L开始出现细胞增殖抑制现象,随作用时间的延长和浓度增高抑制作用更为明显;2000μg/L组见少部分脱落、悬浮细胞;流式细胞仪分析经20,200,2000μg/L的TNP-470作用24,36h后,细胞被阻滞在G0/G1期,G2/M和S期的细胞数减少(P<0.05),细胞分裂受抑制,增殖指数降低。结论:TNP-470能使ECV-304细胞周期阻滞在G0/G1期,对细胞增殖具有抑制作用。

关键词： TNP-470 内皮细胞增生抑制

Automatic software fault localization based on artificial bee colony

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Journal of Systems Engineering and Electronics 2015年第6期26卷 1325-1332页

作者： Linzhi Huang jun ai School of Reliability and Systems Engineering Beihang University

Software debugging accounts for a vast majority of the financial and time costs in software developing and maintenance. Thus, approaches of software fault localization that can help automate the debugging process have become a hot topic in the field of software engineering. Given the great demand for software fault localization, an approach based on the artificial bee colony （ABC） algorithm is proposed to be integrated with other related techniques. In this process, the source program is initially instrumented after analyzing the dependence information. The test case sets are then compiled and run on the instrumented program, and execution results are input to the ABC algorithm. The algorithm can determine the largest fitness value and best food source by calculating the average fitness of the employed bees in the iteralive process. The program unit with the highest suspicion score corresponding to the best test case set is regarded as the final fault localization. Experiments are conducted with the TCAS program in the Siemens suite. Results demonstrate that the proposed fault localization method is effective and efficient. The ABC algorithm can efficiently avoid the local optimum, and ensure the validity of the fault location to a larger extent.

关键词： software debugging software fault localization arti-ficial bee colony (ABC) algorithm program instrumentation.