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CuS nanoplatelets arrays grown on graphene nanosheets as advanced electrode materials for supercapacitor applications

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Journal of Materials Science & Technology 2018年第12期34卷 2342-2349页

作者： xianfu li Kaixuan Zhou Jianyu Zhou Jianfeng Shen Mingxin Ye School of Biological and Chemical Engineering Anhui Polytechnic University Institute of Special Materials and Technology Fudan University

CuS nanoplatelets arrays grown on graphene nanosheets are successfully synthesized via a facile lowtemperature solvothermal reaction with graphene oxide（GO）, CH;CSNH;and Cu（CH;COO）;·H;O as the reactants. CH;CSNH;plays an important role in being the reducing agent for GO and the sulfur source of CuS. Supercapacitive performance of the graphene/CuS nanocomposite as active electrode materials has been evaluated by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy measurements. The results indicate that graphene/CuS electrode delivers a high capacitance of 497.8 F g;at a current density of 0.2 A g;, which outperforms bare CuS electrode. This excellent performance is ascribed to the short diffusion path and large surface area of the unique hierarchical nanostructure with nanoflakes building blocks for bulk accessibility of faradaic reaction.

关键词： Electrochemical capacitor Solvothermal method Nanostructures Composites

三峡水库入库溪流中麦氏花翅蜉(蜉蝣目:四节蜉科)的生活史研究

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中国环境监测 2024年第1期40卷 198-205页

作者：杨坤田震石欣敖偲成李浩然李先福谭路蔡庆华大理大学东喜玛拉雅研究院云南大理671003 中国科学院水生生物研究所淡水生态与生物技术国家重点实验室湖北武汉430072 吉首大学湖南吉首416000 中国科学院大学北京100049 九江学院资源环境学院江西九江332005 中国三江并流区域生物多样性协同创新中心云南大理671003 云南省高校洱海流域保护与可持续发展研究重点实验室云南大理671003

开展水生昆虫生长过程研究对掌握研究区域水生生物的生物学特征和研究区域生态环境状况等均具有重要作用,可为构建和完善研究区域河流生态环境保护体系提供科学参考。于2017年逐月对香溪河库湾入库支流(螃蟹溪)中的一种水生昆虫———... 详细信息

开展水生昆虫生长过程研究对掌握研究区域水生生物的生物学特征和研究区域生态环境状况等均具有重要作用,可为构建和完善研究区域河流生态环境保护体系提供科学参考。于2017年逐月对香溪河库湾入库支流(螃蟹溪)中的一种水生昆虫———麦氏花翅蜉(Baetiella macani)的种群进行了研究,基于大小频率法、幼虫期有效积温条件进行了生活史性状分析和验证。结果显示:麦氏花翅蜉为三化性昆虫,包含一个冬季世代和两个夏季世代。冬季世代幼虫的发育历期为3~4个月,所需有效积温为1286℃;夏季世代幼虫的发育历期为1~2个月,所需有效积温为757℃。研究结果丰富了中国地区水生昆虫的生活史性状信息,并首次呈现了花翅蜉属的生活史特征。

关键词：水生昆虫香溪河生命周期有效积温大小频率法

宫颈癌内外照射后放射性直肠损伤临床预测模型的研究

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中华放射医学与防护杂志 2024年第2期44卷 119-126页

作者：陈宝杰曹璐余远航赵强谢杉沙杜丹李贤富川北医学院附属医院肿瘤科南充637000 川北医学院临床医学院南充637000 医学影像四川省重点实验室四川省肿瘤学重点学科南充637000

目的探讨宫颈癌内外照射放疗不同剂量叠加方式的剂量学差异,建立宫颈癌放疗后慢性放射性直肠损伤(RLRI)的临床预测模型。方法回顾性分析2020年1月1日至2021年11月30日于川北医学院附属医院肿瘤科接受根治性同步放化疗宫颈癌患者的临床资... 详细信息

目的探讨宫颈癌内外照射放疗不同剂量叠加方式的剂量学差异,建立宫颈癌放疗后慢性放射性直肠损伤(RLRI)的临床预测模型。方法回顾性分析2020年1月1日至2021年11月30日于川北医学院附属医院肿瘤科接受根治性同步放化疗宫颈癌患者的临床资料,放疗采用外照射+近距离治疗方式,内外照射剂量评估采用内、外照射生物等效剂量(EQD2)参数直接叠加和内外照射三维计划图像形变配准(DIR)剂量叠加,分析两种剂量评估方式剂量学差异。RLRI分级标准采用肿瘤放射治疗协作组标准。运用两种剂量评估方式构建RLRI的预测模型,使用受试者工作特征(ROC)曲线计算曲线下面积,以评估不同剂量评估方式的预测准确性。结果多次近距离治疗剂量叠加的EQD2参数较DIR剂量叠加高危临床靶区D95%和D90%分别高2.18和2.92 Gy,直肠D_(2 cm)3、D_(1 cm)3、D_(0.1 cm)3分别高1.74、2.28、2.26 Gy(t=3.82、5.21、4.58、5.17、2.05,P0.05)。传统预测指标DIR剂量叠加的预测模型:直肠D_(2 cm)3、D_(1 cm)3的ROC曲线下面积分别为0.784、0.763,最佳预测阈值的灵敏度分别为0.850、0.750,特异度分别为0.679、0.717。结论内外照射EQD2参数直接叠加与三维计划图进行DIR剂量叠加评估剂量参数有剂量学差异。DIR剂量叠加直肠D_(2 cm)3、D_(1 cm)3与联合预测模型预测RLRI的价值较高,但联合预测模型预测RLRI计算复杂,建议临床上通过DIR剂量叠加直肠D_(2 cm)3、D_(1 cm)3预测RLRI。

关键词：宫颈癌形变图像配准放射性直肠损伤临床预测模型

矿山环境下的多台无人矿车协同作业调度与协调策略研究

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Carbon Nanofibrous Sponge Made from Hydrothermally Generated Biochar and Electrospun Polymer Nanofibers

中国科技纵横 2024年第5期 119-121页

作者：李宝程张伟帅根来白洪亮李先福辽宁首钢硼铁有限责任公司辽宁凤城 118110 丹东东方测控技术股份有限公司辽宁丹东 118000

矿山环境的复杂性为多台无人矿车的协同作业调度和协调策略实施带来一系列挑战.基于先进技术,提出一种矿山环境下多台无人矿车协同作业的调度与协调策略,以优化运行效率、提高资源利用率.通过高精度地图构建、自组织通信网络和分布式资... 详细信息

矿山环境的复杂性为多台无人矿车的协同作业调度和协调策略实施带来一系列挑战.基于先进技术,提出一种矿山环境下多台无人矿车协同作业的调度与协调策略,以优化运行效率、提高资源利用率.通过高精度地图构建、自组织通信网络和分布式资源分配等手段,实现无人矿车的智能化协同作业,从而为矿业生产的提升与优化提供技术支持.

关键词：无人矿车协同作业调度策略资源分配矿山环境地形感知

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Advanced Fiber Materials 2020年第2期2卷 74-84页

作者： Tao Xu xianfu li Zhipeng liang Vinod S.Amar Runzhou Huang Rajesh V.Shende Hao Fong Department of Chemistry and Applied Biological Sciences South Dakota School of Mines and TechnologyRapid CitySD 57701USA School of Biological and Chemical Engineering Anhui Polytechnic UniversityWuhu 241000AnhuiChina Department of Chemical and Biological Engineering South Dakota School of Mines and TechnologyRapid CitySD 57701USA

The objective of this study was to convert biochar,a byproduct generated from the hydrothermal process(in oxygen-limited environment)of biomass(e.g.,corn stover),into value-added *** specific,three-dimensional(3D)biochar-containing precursor sponge,which was made by using electrospun polymer nanofibers as skeleton support,was fabricated via an innovative *** weight ratio of biochar to polymer(in the precursor sponge)was 2/1,and it appeared that the biochar weight ratio could be further *** heat treatments(i.e.,stabilization in air and carbonization in argon),the precursor sponge was converted into carbon nanofibrous sponge that had the porosity of~90 vol%,the BET surface area of~51.7 m^(2) g^(−1),and the carbon content of~95 wt%;and it was mechanically elastic/*** electrochemical study indicated that,the carbon nanofibrous sponge could be utilized for making supercapacitor electrode with excellent rate capability and high kinetic *** study would not only demonstrate a high-value application of hydrothermally generated biochar,but also provide a facile while novel approach for the fabrication of carbon nanofibrous sponge which could be potentially used for various applications(particularly the energy storage application).

关键词： Electrospinning 3D nanofibrous sponge Hydrothermally generated biochar Supercapacitor electrode

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“缓冲溶液的配制及性质”的创新设计

广东化工 2024年第16期51卷 196-198页

作者：王芬华孙连伟王崇侠黄江胜李现府徐凯佳安徽工程大学化学与环境工程学院安徽芜湖241000

缓冲溶液是一种能使体系pH值稳定的溶液,在生活中有广泛的应用。无机化学实验、无机及分析化学实验课程中均设置了该实验内容。但根据实践教学发现,传统的实验内容只是设置了单一浓度条件,用pH试纸测试溶液的pH变化,这样的设计存在不直... 详细信息

缓冲溶液是一种能使体系pH值稳定的溶液,在生活中有广泛的应用。无机化学实验、无机及分析化学实验课程中均设置了该实验内容。但根据实践教学发现,传统的实验内容只是设置了单一浓度条件,用pH试纸测试溶液的pH变化,这样的设计存在不直观、设置条件单一等问题,达不到本实验的教学目的。为此,我们重新设计了这部分实验内容:采用指示剂的显色变化代替pH试纸来检验溶液酸碱度的变化;增设不同浓度、不同缓冲比的缓冲溶液及使用精密pH计,考察缓冲容量的影响因素。以上创新设计,学生可以直观地观察溶液颜色的变化,从而理解缓冲溶液的缓冲作用,又可以通过多因素的实验设计,系统地掌握不同的缓冲条件对缓冲容量的影响。从而达到本实验的教学目的及培养学生的自主思考能力和归纳总结能力。

关键词：缓冲溶液缓冲容量缓冲作用创新设计 pH值

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井约束地震速度分形反演技术及其应用

天然气工业 2005年第2期25卷 39-40页

作者：赵追李献甫九江学院惠州市国土资源局

将分形技术用于地震勘探中的储层解释是一个新课题,根据分形理论在地球物理勘探中的应用原理,利用井约束地震速度分形反演技术可以提高地震资料的分辨率.文章提出了具体的井约束声波曲线速度分形反演方法和实现流程.以新疆焉耆盆地实际... 详细信息

将分形技术用于地震勘探中的储层解释是一个新课题,根据分形理论在地球物理勘探中的应用原理,利用井约束地震速度分形反演技术可以提高地震资料的分辨率.文章提出了具体的井约束声波曲线速度分形反演方法和实现流程.以新疆焉耆盆地实际资料为例,利用分形理论对波阻抗曲线在实际测井曲线的约束下进行分形计算,得到一条近似的声测井曲线和一组分形参数,把这一组分形参数延拓至整个目的层段,所内插出的声波曲线和实测的声波曲线有较高的相似性,能得到较精细的声波约束分形反演剖面,其薄层分辨能力可达到5～10 m.

关键词：反演技术地震速度测井曲线分形地震资料反演方法地震勘探声波约束近似

Tectonic Characteristics and Emplacement Mechanism of Dayishan Granite in Hunan Province, China

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Journal of Earth Science 1999年第4期18卷 287-290页

作者： li xianfu(Wuhan Institute of Chemical Technology, Wuhan 430073)li Jianwei Fu Zhaoren li Zijin(Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074) Wuhan Institute of Chemical Technology Wuhan 430073 Faculty of Earth Sciences China University of GeosciencesWuhan 430074

Dayishan granite, a significant metallogenic-rock body located in Shaoyang-Chenxian tectonomagmatic belt of Hunan Province, was controlled by 'Dayishan-type' fault pattern. Based on the study of tectonic setting and geological features of the grantie, it is concluded that the tectonic system controlling magmatic emplacement is a shear folded-fauted zone which resulted from NW-trending convergent strike-slip faulting. The close relationship between the temporal-spatial distribution, emplacement mechanism of Dayishan granite and the strike-slip faulting is detailed.

关键词： strike-slip faulting tectonic style controlling granite emplacement mechanism,Dayishan Hunan Province

Clinical study of three dimensional conformal radiotherapy combined with intracavitary brachytherapy in the treatment of cervical cancer

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The Chinese-German Journal of Clinical Oncology 2011年第6期10卷 340-343页

作者： Yeqin Zhou Daiyuan Ma Tao Ren xianfu li Jing Hu Bangxian Tan Department of Radiotherapy Affiliated Hospital of North Sichuan Medical College Nanchong 637000 China

Objective: The aim of our study was to evaluate the outcome and complications of cervical cancer patients undergoing conventional intracavitary brachytherapy (ICBT) treated with 3D-conformal radiotherapy (3DCRT). Methods: Sixty cervical cancer patients were divided randomly into the conformal group and the conventional group. Thirty patients treated with 3D-conformal radiotherapy in the 3DCRT group, when the whole pelvic received DT 40 Gy, a planning CT scan of each patient was obtained and the second 3DCRT therapy plan was taken. Then, continued to irradiate to 50 Gy. At last, 3DCRT was boosted at local involved volumes to the total dose of 60 Gy. When 3DCRT was combined with intracavitary brachytherapy, the dose of brachytherapy to point A was 30 Gy/5 fractions. In the conventional group, after a total tumor dose of 40 Gy was delivered by the whole pelvic irradiation, the four-field technique was used to irradiate the total pelvic and regional nodes (median dose of 10 Gy), and the involved volumes were boosted to 60 Gy and the dose of brachytherapy to point A was 30 Gy-36 Gy/5-6 fractions. Moreover, both groups were combined with intracavitary brachytherapy respectively. Results: The 1, 2, 3-year survival rates for the 3DCRT group and the conventional group were 96.7%, 93.3%, 90.0% and 86.6%, 76.7%, 70% respectively (P = 0.04, P = 0.02 and P = 0.02). There was a statistically significant difference between the two groups. Compared to the two groups each other in toxic effects, except for the I-II grade rectal and bladder reaction and pelvic fibrosis which was lower in the 3DCRT group (P = 0. 007, P = 0. 006 and P = 0. 015), the side effects were similar and well tolerated in two groups. Conclusion: The all-course 3DCRT combined with intracavitary brachytherapy can be considered as an effective and feasible approach to cervical cancer and may significantly improve the survival rate and reduce the late toxicity. This new role for 3DCRT merits need further evaluation

关键词： cervical cancer external radiotherapy three dimensional conformal radiotherapy chemotherapy intracavitary brachytherapy