New voltammetric method for determination of tyrosine in foodstuffs using an oxygen-functionalized multi-walled carbon nanotubes modified acetylene black paste electrode
作者：
Feng, Jinxia;Deng, Peihong* ;Xiao, Jinyun;Li, Junhua;Tian, Yaling;...
期刊：
Journal of Food Composition and Analysis ,2021年96:103708 ISSN：0889-1575
通讯作者：
He, Quanguo;Deng, Peihong
作者机构：
[Li, Guangli; He, Quanguo; Tian, Yaling; Wu, Yiyong; Xiao, Jinyun; Liu, Jun; Feng, Jinxia] Hunan Univ Technol, Sch Life Sci & Chem, Zhuzhou 412007, Peoples R China.;[Tian, Yaling; Deng, Peihong; Wu, Yiyong; Li, Junhua; Xiao, Jinyun; Feng, Jinxia] Hengyang Normal Univ, Dept Chem & Mat Sci, Key Lab Funct Organometall Mat Hunan Prov Univ, Key Lab Funct Metal Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.
通讯机构：
[He, Quanguo; Deng, Peihong] H;Hunan Univ Technol, Sch Life Sci & Chem, Zhuzhou 412007, Peoples R China.;Hengyang Normal Univ, Dept Chem & Mat Sci, Key Lab Funct Organometall Mat Hunan Prov Univ, Key Lab Funct Metal Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.
关键词：
Oxygen-functionalized multi-walled carbon nanotubes;Tyrosine;Acetylene black paste electrode;Voltammetric determination
摘要：
In this paper, acetylene black paste electrode (ABPE) was prepared and modified by oxygen-functionalized multi-walled carbon nanotubes (MWCNT-COOH). The fabricated MWCNT-COOH/ABPE was further used for the investigation on the electrochemical behavior of tyrosine by cyclic voltammetry and second-order derivative linear sweep voltammetry. In 0.1 M pH 2.6 phosphate buffer solution, a well-defined anodic peak appeared at 924 mV, which was attributed to the electrooxidation of tyrosine on the modified electrode. The electrochemical parameters of tyrosine on the modified electrode were calculated. Under the optimal conditions, the oxidation peak current of tyrosine varies linearly with its concentration in the range of 0.04−1.0 μ M, 1.0−60 μ M and 60−600 μ M, and the detection limit is 0.02 μM. The MWCNT-COOH/ABPE was applied to the determination of tyrosine in food with satisfactory results. © 2020 Elsevier Inc.
语种：
英文
展开
Measuring and Predicting Urban Expansion in the Angkor Region of Cambodia
作者：
Liu, Jie;Ren, Hongge* ;Wang, Xinyuan;Shirazi, Zeeshan;Quan, Bin
期刊：
Remote Sensing ,2019年11(17):2064 ISSN：2072-4292
通讯作者：
Ren, Hongge
作者机构：
[Liu, Jie; Shirazi, Zeeshan; Ren, Hongge; Wang, Xinyuan] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, 9 Dengzhuang South Rd, Beijing 100094, Peoples R China.;[Liu, Jie; Ren, Hongge] Univ Chinese Acad Sci, Beijing 100049, Peoples R China.;[Quan, Bin] Hengyang Normal Univ, Coll City & Tourism, Hengyang 421002, Peoples R China.
通讯机构：
[Ren, Hongge] C;[Ren, Hongge] U;Chinese Acad Sci, Inst Remote Sensing & Digital Earth, 9 Dengzhuang South Rd, Beijing 100094, Peoples R China.;Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
关键词：
Angkor World Heritage;urban expansion;photointerpretation;remote sensing;CA-Markov model
摘要：
Recent increases in urbanization and tourism threaten the viability of UNESCO world heritage sites across the globe. The Angkor world heritage site located in southern Cambodia is now facing such a challenge. Over the past two decades, Angkor has seen over 300,000% growth in international tourist arrivals, which has led to uncontrolled development of the nearby city of Siem Reap. This study uses remote sensing and GIS to comprehend the process of urban expansion during the past 14 years, and has applied the CA-Markov model to predict future urban expansion. This paper analyzes the urban pressure on the Angkor site at different scales. The results reveal that the urban area of Siem Reap city increased from 28.23 km2 in 2004 to 73.56 km2 in 2017, an increase of 160%. Urban growth mainly represented a transit-oriented pattern of expansion, and it was also observed that land surfaces, such as arable land, forests, and grasslands, were transformed into urban residential land. The total constructed land area in the core and buffer zones increased by 12.99 km2 from 2004 to 2017, and 72% of the total increase was in the buffer zone. It is predicted that the built-up area in Siem Reap is expected to cover 135.09 km2 by 2025 and 159.14 km2 by 2030. The number of monuments that are most likely be affected by urban expansion is expected to increase from 9 in 2017 to 14 in 2025 and 17 in 2030. The urban area in Siem Reap has increased dramatically over the past decade and monuments continue to be decimated by urban expansion. This paper urges closer attention and urgent actions to minimize the urban pressure on the Angkor site in the future. © 2019 by the authors.
语种：
英文
展开
Facile Preparation of Fe3O4/C Nanocomposite and Its Application for Cost-Effective and Sensitive Detection of Tryptophan
作者：
Liu, Jun;Dong, Shuai;He, Quanguo;Yang, Suchun;Xie, Mei;...
期刊：
Biomolecules ,2019年9(6):245- ISSN：2218-273X
通讯作者：
Li, Guangli;Deng, Peihong
作者机构：
[He, Quanguo; Li, Guangli; Xie, Mei; Dong, Shuai; Yang, Suchun; Liu, Jun] Hunan Univ Technol, Coll Life Sci & Chem, Hunan Key Lab Biomed Nanomat & Devices, Zhuzhou 412007, Peoples R China.;[Deng, Peihong] Hengyang Normal Univ, Dept Chem & Mat Sci, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.;[Deng, Peihong] Hengyang Normal Univ, Dept Chem & Mat Sci, Key Lab Funct Organometall Mat Hunan Prov Univ, Hengyang 421008, Peoples R China.;[Xia, Yonghui] Zhuzhou Inst Food & Drug Control, Zhuzhou 412000, Peoples R China.
通讯机构：
[Li, Guangli; Deng, Peihong] H;Hunan Univ Technol, Coll Life Sci & Chem, Hunan Key Lab Biomed Nanomat & Devices, Zhuzhou 412007, Peoples R China.;Hengyang Normal Univ, Dept Chem & Mat Sci, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.;Hengyang Normal Univ, Dept Chem & Mat Sci, Key Lab Funct Organometall Mat Hunan Prov Univ, Hengyang 421008, Peoples R China.
关键词：
Fe3O4/C composite;Second derivative linear scan voltammetry;Tryptophan;Voltammetric detection
摘要：
In this study, we reported facile synthesis of Fe3O4/C composite and its application for the cost-effective and sensitive determination of tryptophan (Trp) in human serum samples. Fe3O4/C composites were prepared by a simple one-pot hydrothermal method followed by a mild calcination procedure, using FeCl3·6H2O as Fe3O4 precursor, and glucose as reducing agent and carbon source simultaneously. The Fe3O4/C composite modified glassy carbon electrode (Fe3O4/C/GCE) was prepared by drop-casting method. The microstructure and morphology of Fe3O4/C composite was characterized by powder X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. Due to large specific surface area and synergistic effect from Fe3O4 nanoparticles and carbon coating, Fe3O4/C composite showed excellent electrocatalytic activity toward the oxidation of Trp. As a result, the proposed Fe3O4/C/GCE displayed superior analytical performances toward Trp determination, with two wide detection ranges (1.0–80 µM and 80–800 µM) and a low detection limit (0.26 µM, S/N = 3). Moreover, successful detection of Trp in human serum samples further validate the practicability of the proposed sensor. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.
语种：
英文
展开
Low-Cost Archaeological Investigation and Rapid Mapping of Ancient Stone Tidal Weirs in the Penghu Archipelago Using Google Earth
作者：
Luo, Lei;Wang, Xinyuan* ;Liu, Jie;Zheng, Wenwu;Zhen, Jing;...
期刊：
Sustainability ,2019年11(17):4536 ISSN：2071-1050
通讯作者：
Wang, Xinyuan;Wan, Hong
作者机构：
[Liu, Jie; Wan, Hong; Zhu, Lanwei; Wang, Xinyuan; Wang, XY; Wan, H; Liu, Chuansheng; Zhen, Jing; Luo, Lei] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, Beijing 100094, Peoples R China.;[Zheng, Wenwu; Luo, Lei] Hengyang Normal Univ, Natl Local Joint Engn Lab Digital Preservat & Inn, Hengyang 421001, Peoples R China.;[Liu, Jie; Zhu, Lanwei; Wang, Xinyuan; Liu, Chuansheng; Luo, Lei] Int Ctr Space Technol Nat & Cultural Heritage Aus, Beijing 100094, Peoples R China.;[Wan, Hong] Shandong Agr Univ, Coll Informat Sci & Engn, Tai An 271000, Shandong, Peoples R China.
通讯机构：
[Wang, XY; Wan, H] C;[Wang, Xinyuan] I;[Wan, Hong] S;Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, Beijing 100094, Peoples R China.;Int Ctr Space Technol Nat & Cultural Heritage Aus, Beijing 100094, Peoples R China.
关键词：
STWs;archaeological;intertidal flat;coastal;stone heritage;Google Earth;Penghu;remote sensing
摘要：
This paper provides a brief history review of the use of ancient weirs in fishing on our planet, as well as a pilot study that involves investigating and mapping the coastal heritage of ancient stone tidal weirs (STWs) in the Penghu Archipelago which is located in the Taiwan Strait. The spatial distribution and morphological features of STWs across Penghu Archipelago were investigated and analyzed using very high-resolution (VHR) and freely available Google Earth (GE) imagery and geographic information system (GIS) analysis tools. A total of 539 ground-truthed STWs were identified from multiple temporal GE images, and these accounted for over 90% of the localized inventory databases. The proposed GE-based method was found to be more efficient, timely and effective compared to field and airborne surveys. This paper illustrates the utility of GE as a source of freely available VHR remote sensing imagery for archaeological surveys and heritage sustainability in coastal areas.
语种：
英文
展开
Sketch-based 3-D modeling for piecewise planar objects in single images
作者：
Zou, Changqing;Peng, Xiaojiang;Lv, Hao;Chen, Shifeng* ;Fu, Hongbo;...
期刊：
COMPUTERS & GRAPHICS-UK ,2015年46(C):130-137 ISSN：0097-8493
通讯作者：
Chen, Shifeng
作者机构：
[Zou, Changqing; Peng, Xiaojiang] Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang, Peoples R China.;[Chen, Shifeng; Zou, Changqing; Lv, Hao] Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen Key Lab CVPR, Shenzhen, Peoples R China.;[Zou, Changqing] Univ Chinese Acad Sci, Shenzhen Coll Adv Technol, Beijing, Peoples R China.;[Fu, Hongbo] City Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China.;[Liu, Jianzhuang] Chinese Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China.
通讯机构：
[Chen, Shifeng] C;Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen Key Lab CVPR, Shenzhen, Peoples R China.
关键词：
3-D modeling;Piecewise planar objects;Single images;Sketch-based
摘要：
3-D object modeling from single images has many applications in computer graphics and multimedia. Most previous 3-D modeling methods which directly recover 3-D geometry from single images require user interactions during the whole modeling process. In this paper, we propose a semi-automatic 3-D modeling approach to recover accurate 3-D geometry from a single image of a piecewise planar object with less user interaction. Our approach concentrates on these three aspects: (1) requiring rough sketch input only, (2) accurate modeling for a large class of objects, and (3) automatically recovering the invisible part of an object and providing a complete 3-D model. Experimental results on various objects show that the proposed approach provides a good solution to these three problems. (C) 2014 Elsevier Ltd. All rights reserved.
语种：
英文
展开
Separation of Line Drawings Based on Split Faces for 3D Object Reconstruction
作者：
Zou, Changqing* ;Yang, Heng;Liu, Jianzhuang
期刊：
Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition ,2014年:692-699 ISSN：1063-6919
通讯作者：
Zou, Changqing
作者机构：
[Zou, Changqing; Liu, Jianzhuang] Shenzhen Inst Adv Technol, Shenzhen Key Lab CVPR, Shenzhen, Peoples R China.;[Zou, Changqing] Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang, Peoples R China.;[Zou, Changqing] Univ Chinese Acad Sci, Beijing, Peoples R China.;[Yang, Heng] Queen Mary Univ London, London, England.;[Liu, Jianzhuang] Chinese Univ Hong Kong, Dept Informat Engn, Hong Kong, Hong Kong, Peoples R China.
通讯机构：
[Zou, Changqing] S;Shenzhen Inst Adv Technol, Shenzhen Key Lab CVPR, Shenzhen, Peoples R China.
会议名称：
2014 IEEE Conference on Computer Vision and Pattern Recognition
会议时间：
June 2014
会议地点：
Columbus, OH, USA
会议论文集名称：
2014 IEEE Conference on Computer Vision and Pattern Recognition
关键词：
3D reconstruction;Line drawing decomposition;Line drawing separation;Split face
摘要：
Reconstructing 3D objects from single line drawings is often desirable in computer vision and graphics applications. If the line drawing of a complex 3D object is decomposed into primitives of simple shape, the object can be easily reconstructed. We propose an effective method to conduct the line drawing separation and turn a complex line drawing into parametric 3D models. This is achieved by recursively separating the line drawing using two types of split faces. Our experiments show that the proposed separation method can generate more basic and simple line drawings, and its combination with the example-based reconstruction can robustly recover wider range of complex parametric 3D objects than previous methods.
语种：
英文
展开
欠发达地区农业创新问题与策略
作者：
刘洁
期刊：
北京农业 ,2013年(30):262-263 ISSN：1000-6966
作者机构：
湖南省衡阳师范学院,湖南衡阳,421000;[刘洁] 衡阳师范学院
关键词：
欠发达地区;农业科技;信息化;策略
摘要：
中国农业现代化发展正处于转型的关键时期,由于受到资源和环境带来的巨大压力,农业必须注重改变增长方式,优化结构布局,实现自然资源和生产要素集约的优化配置。关注欠发达地区农村的统筹发展,加快转变农业生产方式,改变生产理念,使农业和农村发展真正的科学发展。通过农村信息化,加强科技创新,实现欠发达地区全面,协调,健康和可持续发展。
语种：
中文
展开
浅议独立学院女生就业能力培养对策
作者：
刘洁
期刊：
群文天地 ,2012年(14):289-290 ISSN：1009-6302
作者机构：
湖南衡阳师范学院南岳学院;[刘洁] 衡阳师范学院南岳学院
关键词：
独立学院;女大学生;就业能力
摘要：
通过分析独立学院女大学生就业现状以及就业优劣势,独立学院女大学生就业能力的培养主要着眼于专业知识能力、语言表达能力、文字应用能力、处理社会人际关系能力、心理调节能力、环境适应能力、忍辱负重能力、创新能力、自主创业能力、实践能力十个方面。
语种：
中文
展开
独立学院团建工作存在的问题及对策研究
作者：
刘洁
期刊：
首都教育学报 ,2010年04(5):87-88 ISSN：1002-2821
作者机构：
衡阳师范学院南岳学院,湖南,衡阳,421008
关键词：
独立学院;团建工作;重要性;现状;对策
摘要：
团的建设在全团始终处于举足轻重的地位.目前独立学院发展十分迅速,如何加强团建工作以适应独立学院快速发展的需要,如何发挥团组织服务学生的特点,已成为独立学院共青团工作中面临的一个新问题.本文阐述了独立学院团建工作的特点及重要性,分析了独立学院团建工作的现状, 并针对目前所存在的问题提出了一些解决办法.
语种：
中文
展开
