复合材料与工程专业的“汇集式”教学体系
作者：
杨泛明;马德崇;吴丹;游一兰;贺国文
期刊：
河南化工 ,2023年40(09):66-68 ISSN：1003-3467
作者机构：
[杨泛明; 马德崇; 吴丹; 游一兰; 贺国文] 湖南城市学院材料与化学工程学院
关键词：
复合材料与工程;汇集式;教学;新工科;机制
摘要：
立足于新工科建设大背景，针对复合材料与工程专业学生能力培养，首次提出“汇集式”教学体系。具体包括：基于国家重点扶持行业和区域经济发展特色建立特色鲜明的人才培养方案；基于特色鲜明的人才培养方案构建“汇集式”教学体系；建立促进“汇集式”教学体系持续改进的反馈机制。“汇集式”教学体系的建立，有助于提高学生的专业认知，促进专业发展，缩小高校人才培养与用人单位人才需求之间的差距。
语种：
中文
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Carbon Dioxide Adsorption Performance and the Kinetic Properties of the Zirconium and Poly(ethyleneimine) Bifunctionalized Molecular Sieve of KIT-6
作者：
Liao, Min;Long, Sheng;Zou, Pan;Zhang, Ke-Yi;Liang, Hai-Cheng;...
期刊：
Energy & Fuels ,2023年37(20):15867-15878 ISSN：0887-0624
通讯作者：
Yang, FM
作者机构：
[Long, Sheng; Liang, Hai-Cheng; Zou, Pan; Yang, Fan-Ming; Liao, Min; Zhang, Ke-Yi; Xie, Du; Jiang, Kai] Hunan City Univ, Coll Mat & Chem Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构：
[Yang, FM ] H;Hunan City Univ, Coll Mat & Chem Engn, Yiyang 413000, Hunan, Peoples R China.
摘要：
Porous materials of PEI( n )/Zr ( N ) -KIT-6 were prepared by doping zirconium to the KIT-6 framework and introducing poly(ethylenimine) (PEI) to the pore channels ( n is the weight percentage of PEI to Zr ( N ) -KIT-6, and N is the molar ratio of Zr/Si). The adsorbents were characterized and tested at a 20% CO 2 concentration to investigate the influence of Zr and PEI on CO 2 adsorption. The results display that Zr–O–Si bonds are formed after the doping of Zr species. In addition, PEI is loaded on the surface through the formation of hydrogen bonds and Zr–N bonds. The synthesized PEI( n )/Zr ( N ) -KIT-6 materials keep stable when the temperature is lower than 210 °C. In addition, the materials exhibit good CO 2 adsorption performance, which is attributed to the existence of Zr and PEI. The Lewis acidity of KIT-6 is improved after the doping of Zr heteroatoms, leading to the immobilization of more PEI and the enhancement of CO 2 adsorption properties. The adsorption includes two steps: diffusion of CO 2 in the pore channels and the reaction between CO 2 and amine groups. When the gas flow rate is 40 mL/min, the maximum CO 2 adsorption capacity of 174.7 mg/g is achieved. After 20 cycles, the adsorption value keeps stable.
语种：
英文
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Synergistic phototherapy of NIR wavelength xanthene-quinoline salt-based heavy-atom-free photosensitizers for tumor therapy
作者：
He, Long;He, Lin-Hui;Lai, Huan-Hua;Xu, Shuai* ;Wang, Jiao-Liang;...
期刊：
Chemical Communications ,2023年59(72):10745-10748 ISSN：1359-7345
通讯作者：
Xu, Shuai;Shi, L;Xu, S
作者机构：
[He, Lin-Hui; Yuan, Lin; Shi, Ling; Xu, Shuai; He, Long; Xu, Jun-Chao; Lai, Huan-Hua; Xu, S] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Peoples R China.;[He, Long] Hunan Univ Sci & Technol, Sch Chem & Chem Engn, Key Lab Theoret Organ Chem, Funct Mol Minist Educ, Xiangtan 411201, Peoples R China.;[Xu, S; Xu, Shuai] Univ Jinan, Sch Chem & Chem Engn, Jinan 250022, Peoples R China.;[Wang, Jiao-Liang] Hunan City Univ, Coll Mat & Chem Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Xu, S ] U;[Shi, L ; Xu, S] H;Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Peoples R China.;Univ Jinan, Sch Chem & Chem Engn, Jinan 250022, Peoples R China.
摘要：
We propose a practical strategy to design a series of heavy-atom-free synergistic phototherapy agents (CSQs) with both photodynamic therapy (PDT) and photothermal therapy (PTT) under NIR wavelength excitation by simply replacing the indole salt of xanthene Changsha (CS) with quinoline salt.
语种：
英文
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“三思、二创、一中心”混合式教学改革与实践——以环境工程原理为例
作者：
尹志芳;王立勤;王锋;曾永林;黄毅;...
期刊：
当代教育实践与教学研究 ,2023年(4):40-42 ISSN：2095-6711
作者机构：
[曾永林; 王立勤; 黄毅; 尹志芳; 王锋; 贺国文] 湖南城市学院材料与化学工程学院
关键词：
思政教育;思维导图;教学反思;教学创新;考核创新
摘要：
针对环境工程原理课程概念多、公式多、设备多、应用多、变化多和内容抽象复杂等特点，采用“三思、二创、一中心”的教学策略，即以学生为中心，有机融入思政教育、思维导图和教学反思，通过对教材内容进行知识重构，采用立体化的教学资源和翻转课堂等教学模式，结合雨课堂和智慧树平台，通过线上线下，多层次、多维度、多渠道地加强过程考核，最终实现知识获取、能力提升和价值引领“三位一体”培养目标。
语种：
中文
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A Fast and Robust Third-Order Multivariate Calibration Approach Coupled with Excitation–Emission Matrix Phosphorescence for the Quantification and Oxidation Kinetic Study of Fluorene in Wastewater Samples
作者：
Qing, Xiang-Dong;Zhang, Xiao-Hua;An, Rong;Zhang, Jin;Xu, Ling;...
期刊：
Chemosensors ,2023年11(1):53- ISSN：2227-9040
通讯作者：
Duponchel, L.;Qing, X.-D.
作者机构：
[Zhang, Jin; Qing, Xiang-Dong; Xu, Ling; An, Rong] Hunan City Univ, Coll Mat & Chem Engn, Hunan Prov Key Lab Dark Tea & Jin hua, Yiyang 413000, Peoples R China.;[Zhang, Xiao-Hua] Xuchang Univ, Food & Bioengn Coll, Key Lab Biomarker Based Rapid Detect Technol Food, Xuchang 461000, Peoples R China.;[Duponchel, Ludovic] Univ Lille 1, CNRS, UMR 8516, LASIRE Lab Spect Interact React & Environm, F-59000 Lille, France.
通讯机构：
[Ludovic Duponchel; Xiang-Dong Qing] A;Authors to whom correspondence should be addressed.<&wdkj&>Hunan Provincial Key Laboratory of Dark Tea and Jin-hua, College of Materials and Chemical Engineering, Hunan City University, Yiyang 413000, China<&wdkj&>Authors to whom correspondence should be addressed.<&wdkj&>Université Lille 1, CNRS, UMR 8516–LASIRE–Laboratoire de Spectroscopie Pour Les Interactions, La Réactivité et l’environnement, F-59000 Lille, France
关键词：
third-order multivariate calibration;SWAQLD;AQLD;PARAFAC;phosphorescence;fluorene;wastewater
摘要：
Human activity today produces a large number of pollutants that end up in the environment, such as soil, water, and airborne particles. The first objective of this work is to introduce a new third-order multivariate calibration approach called self-weighted alternating quadrilinear decomposition (SWAQLD) for the analysis of organic pollutant of fluorene (FLU) in different water systems. One simulated and two real four-way data sets are used to study the potential of the proposed approach in comparison with two classical algorithms, namely alternating quadrilinear decomposition (AQLD) and parallel factor analysis (PARAFAC). The results of simulated data show that SWAQLD inherits the advantages of PARAFAC in terms of not only tolerance to experimental noise but also a fast convergence and a certain robustness to overestimation of the rank of the models from AQLD. The second objective of this work is to propose a new way of generating third-order data using excitation–emission matrix phosphorescence (EEMP) at room temperature for the study of the kinetic process of oxidation of FLU in complex chemical systems. The obtained rate constant and half-life of the FLU oxidation, on average, are 0.015 min−1 and 45.5 min for free-interference water and 0.017 min−1 and 40.0 min for wastewater, respectively. Research results show that SWAQLD coupled with EEMP allows the quantification and kinetic monitoring of FLU in analytical conditions of different complexities with excellent robustness to the choice of the number of model components. © 2023 by the authors.
语种：
英文
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基层药品不良反应报告与监测存在的问题及对策
作者：
刘湛军;李嘉贝;余一丹;刘添鑫
期刊：
城市学刊 ,2023年44(3):48-51 ISSN：2096-059X
作者机构：
[余一丹; 刘湛军; 刘添鑫] 湖南城市学院材料与化学工程学院,黑茶金花湖南省重点实验室;[李嘉贝] 南京工业大学材料科学与工程学院
关键词：
药品不良反应监测;问题;对策
摘要：
药品不良反应报告与监测是有效减少药品危害重复发生和保障公众用药安全的重要手段,目前我国药品不良反应报告与监测工作还存在公众药监报告意识不强、监测机构不健全,运行制度不完善、监测队伍专业性不强、法律法规体系不完备、药品不良...展开更多 药品不良反应报告与监测是有效减少药品危害重复发生和保障公众用药安全的重要手段,目前我国药品不良反应报告与监测工作还存在公众药监报告意识不强、监测机构不健全,运行制度不完善、监测队伍专业性不强、法律法规体系不完备、药品不良反应报告量少质低等很多问题,可以通过提高社会认知、加强制度建设、注重人才培养、完善法律法规等方法改进药品不良反应报告与监测工作。收起
语种：
中文
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冠突散囊菌产阿魏酸酯酶菌株筛选与产酶条件优化
作者：
周晓红;宁欢缘;王旭;蒋亚峰;章子龙;...
期刊：
湖南城市学院学报(自然科学版) ,2023年32(03):67-71 ISSN：1672-7304
作者机构：
[章子龙; 伍诺; 蒋亚峰; 王旭; 周晓红] 湖南城市学院材料与化学工程学院;[宁欢缘] 黑茶金花湖南省重点实验室
关键词：
冠突散囊菌;阿魏酸酯酶;酶活性
摘要：
通过制备、初筛和复筛PDA(potato dextrose agar)平板培养基和液体培养基,从8种不同来源的冠突散囊菌中筛选出1株高产阿魏酸酯酶的优势菌种,并通过控制反应时间、酶添加量和缓冲溶液pH值,对该优势菌种进行...展开更多 通过制备、初筛和复筛PDA(potato dextrose agar)平板培养基和液体培养基,从8种不同来源的冠突散囊菌中筛选出1株高产阿魏酸酯酶的优势菌种,并通过控制反应时间、酶添加量和缓冲溶液pH值,对该优势菌种进行条件优化实验,以确定其最佳反应条件。实验结果表明:3株冠突散囊菌(C20G11、C20G10和PDAJ1)在粗筛培养基中的菌落生长速度占据优势;通过复筛,发现PDAJ1菌落生长速度在3株冠突散囊菌中占据优势,由此确定其为优势菌种;当条件优化实验的反应时间为150 min、缓冲溶液pH值为6.0和酶液与阿魏酸甲酯溶液的体积比为3︰1时,PDAJ1产酶活性最大;随着反应时间延长、酶含量增加和缓冲溶液pH值增大,PDAJ1产酶活性逐渐降低。收起
语种：
中文
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一种基于类花菁检测过氧化氢荧光探针的合成
作者：
陈小宜;邓璇;樊辉;齐风佩
期刊：
工业微生物 ,2023年53(05):19-22 ISSN：1001-6678
作者机构：
[陈小宜; 邓璇; 樊辉; 齐风佩] 湖南城市学院材料与化学工程学院
关键词：
过氧化氢;花菁染料;荧光探针;苯并噻唑
摘要：
文章以2-甲基苯并噻唑和尼泊金乙酯为原料，合成了一种具有红色荧光的花菁类染料，该染料与4-溴甲基苯硼酸频哪醇酯反应可以生成用于检测过氧化氢的荧光探针。通过紫外和荧光研究该探针在不同溶剂、过氧化氢浓度、黏度条件下检测过氧化氢的响应。研究结果表明。在该实验中，过氧化氢浓度越高、体系黏度越低，探针荧光强度均逐渐降低，同时具有良好的选择性。
语种：
中文
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NaFexCry(SO4)2(OH)6的合成及电化学性能研究
作者：
陈俊雪;莫建欣;周治宇;李中林;王丁;...
期刊：
无机盐工业 ,2023年55(08):71-76 ISSN：1006-4990
作者机构：
[李中林; 莫建欣; 李玉平; 王丁; 李义兵; 周治宇; 陈俊雪] 桂林理工大学材料科学与工程学院,广西桂林 541000;[李中林; 莫建欣; 李玉平; 王丁; 李义兵; 周治宇; 陈俊雪] 桂林理工大学有色金属与材料加工新技术教育部重点实验室,广西桂林 541000;湖南城市学院材料与化学工程学院,湖南益阳 413099;[将学先] 桂林理工大学南宁分校冶金与资源工程系,广西南宁 530000;[胡拥军] 湖南城市学院
关键词：
黄钠铁矾;Cr掺杂;非贵金属催化剂;析氧反应
摘要：
随着国内外能源的过度消耗和环境污染,寻求高效、清洁、可持续的能源已成为当前的首要任务。关于易合成的黄钠铁矾在析氧反应(OER)方面的研究较少。因此,通过水热法合成了4种不同铁铬物质的量比的铬掺杂黄钠铁矾[NaFe展开更多 随着国内外能源的过度消耗和环境污染,寻求高效、清洁、可持续的能源已成为当前的首要任务。关于易合成的黄钠铁矾在析氧反应(OER)方面的研究较少。因此,通过水热法合成了4种不同铁铬物质的量比的铬掺杂黄钠铁矾[NaFexCry(SO4)2( OH)6]催化材料。利用SEM、XRD、Raman和电化学方法对其结构和性能进行表征。结果表明,Cr3+成功地掺入到黄钠铁矾晶格中,随着Cr3+掺杂量的增加,黄钠铁矾颗粒尺寸逐渐减小,在1 mol/L KOH的电解液中,n(Fe3+)/n(Cr3+)为1∶1的样品的OER催化性能最佳,当电流密度为10 mA/cm2时,其过电位为370 mV,塔菲尔斜率为92.99 mV/dec,电化学双层电容(Cdl)为10.94 mF/cm2。
语种：
中文
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Authentication of the production season of Xinyang Maojian green tea using two-dimensional fingerprints coupled with chemometric multivariate calibration and pattern recognition analysis
作者：
Xiao-Hua Zhang;Ren-Jun Liu;Jing-Jing Zheng;Xiang-Dong Qing;Kai-Long Yang;...
期刊：
LWT ,2023年176:114556 ISSN：0023-6438
通讯作者：
Xiao-Hua Zhang<&wdkj&>Jin-Fang Nie
作者机构：
[Xiao-Hua Zhang; Jing-Jing Zheng; Kai-Long Yang; Ya-Qian Zhang; Le-Yuan Pan] Henan Key Laboratory of Biomarker Based Rapid-detection Technology for Food Safety, Food and Pharmacy College, Xuchang University, Xuchang, 461000, PR China;[Ren-Jun Liu; Jin-Fang Nie] Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, China;[Xiang-Dong Qing] Hunan Provincial Key Laboratory of Dark Tea and Jin-hua, College of Materials and Chemical Engineering, Hunan City University, Yiyang, 413049, PR China
通讯机构：
[Xiao-Hua Zhang] H;[Jin-Fang Nie] C;Henan Key Laboratory of Biomarker Based Rapid-detection Technology for Food Safety, Food and Pharmacy College, Xuchang University, Xuchang, 461000, PR China<&wdkj&>Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, China
关键词：
Discriminant analysis;Least squares approximations;Palmprint recognition;Alternating trilinear decomposition;Alternating trilinear decomposition assisted multivariate curve resolution;Chemometric pattern recognition analyse;Chemometrices;Green tea;HPLC-DAD fingerprint;Hplc/dad;Multivariate curve resolution;Production season;Xinyang;Xinyang maojian green tea;Flavonoids
摘要：
This study aimed to authenticate the production season of Xinyang Maojian green tea, and screen and identify its characteristic components through non-targeted metabonomics methods based on two-dimensional fingerprints combined with chemometric analysis. Firstly, two-dimensional fingerprints of spring and autumn teas were obtained through HPLC-DAD analysis to form a three-dimensional array (retention time × absorption wavelength × sample). Subsequently, the multiple co-elution peaks and spectral profiles in two-dimensional HPLC-DAD fingerprints were resolved by using alternating trilinear decomposition assisted multivariate curve resolution (ATLD-MCR) algorithm. We obtained the relative concentration matrix C (24 × 122), which was further used to distinguish the production season of Xinyang Maojian green tea through chemometric pattern recognition analysis. The evaluation results of both orthogonal partial least squares-discriminant analysis (OPLS-DA) and partial least squares-discriminant analysis (PLS-DA) models were better than those of PCA models, and could effectively distinguish the production season of Xinyang Maojian green teas. Moreover, 5 variables were selected through VIP method to build new UV-scaling and Par-scaling OPLS-DA models. In conclusion, the following characteristic components were identified in accordance with the analytical standards and published data: gallocatechin (GC), theobromine (THB), epigallocatechin gallate (EGCG), gallocatechin gallate (GCG), and epicatechin gallate (ECG). © 2023 The Author(s)
语种：
英文
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Hollow urchin-shaped NCM811 ternary-structure for high rate charge/discharge capability and efficient CO2 adsorption
作者：
Yang, Fan-Ming* ;Zhou, Xiao-Yao;Li, Xi-Da;Yi, Zhi-Cheng;Feng, Rong;...
期刊：
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING ,2023年11(2):109445 ISSN：2213-2929
通讯作者：
Yang, Fan-Ming;He, GW
作者机构：
[Feng, Rong; Yang, Fan-Ming; Zhou, Xiao-Yao; Li, Xi-Da; Yi, Zhi-Cheng; He, Guo-Wen] Hunan City Univ, Coll Mat & Chem Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构：
[Yang, FM; He, GW ] H;Hunan City Univ, Coll Mat & Chem Engn, Yiyang 413000, Hunan, Peoples R China.
关键词：
Carbon dioxide;Potassium hydroxide;Surface reactions;Charge-discharge capability;CO2 adsorption;CO2adsorption;High rate;Hollow;Ncm811;Porous;Rate capabilities;Ternary structure;Urchin-shaped;Adsorption
摘要：
A new type of hollow urchin-shaped NCM811 ternary-structure material was prepared for high rate charge/discharge capability and efficient CO2 adsorption. Ni2+/Ni3+, Co2+/Co3+ and Mn4+exist simultaneously in the NCM811 material, and the atomic ration of Ni: Co: Mn is close to 8: 1: 1. In KOH, the NCM811 material shows a pseudocapacitance behavior and achieves a remarkable specific discharge capacity of 208.3 F/g. When the current density is improved to 20 A/g, the capacity still keeps 52.3 %. The excellent rate capability is associated with the hollow urchin-shaped porous structure which provide fast ions migration, large reaction surface area and good heterometallic synergy. The CO2 adsorption results conform to the Bangham mode. At 25 °C, a large CO2 adsorption capacity of 3.66 mmol/g is achieved in a flow rate of 35 mL/min. The adsorption process may closely related to the large pore volume and abundant O2- basic sites. © 2023 Elsevier Ltd.
语种：
英文
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颗粒状NiO的制备及其电化学性能和CO_2吸附性能
作者：
杨泛明;贺国文
期刊：
化工进展 ,2023年42(2):907-916 ISSN：1000-6613
通讯作者：
Yang, Fanming(ychufei@163.com)
作者机构：
[杨泛明; 贺国文] College of Materials and Chemical Engineering, Hunan City University, Hunan, Yiyang;413000, China;[杨泛明; 贺国文] 413000, China
关键词：
氧化镍;颗粒;介孔;赝电容;吸附
摘要：
利用乙醇和去离子水的混合溶液为溶剂,通过静态水热处理合成NiO,并对其在KOH电解液中的电化学行为与CO_2吸附性能进行探究。采用X射线衍射、X射线光电子能谱、扫描电子显微镜、能量色散谱和N_2吸附-脱附技术对NiO的物相、形貌、组成和孔结构进行分析。结果表明,NiO为颗粒状介孔材料,属于立方系晶体。NiO中,Ni以Ni~(2+)、Ni~(3+)形式存在。以NiO为活性材料、6mol/L KOH为电解液组装三电极,可以产生赝电容。电流密度为1A/g,电压窗口为0.1~0.5V时,首次放电效率为93.5%,放电比容量为254.5F/g,能量密度为5.7Wh/kg,功率密度为200W/kg;循环1000次,放电比容量仅降低3.93%。NiO表面的CO_2吸附过程符合Bangham模型;温度为25℃、气体流速为10mL/min时,CO_2吸附量可达103.2mg/g;循环20次,吸附量保持稳定。
语种：
中文
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The preparation of rod-like porous α-Fe2O3 with large interplanar spacing for symmetric supercapacitors
作者：
Yang, Fan-Ming;Li, Xi-Da
期刊：
Australian Journal of Chemistry ,2023年76(11):774-784 ISSN：0004-9425
通讯作者：
Yang, FM
作者机构：
[Li, Xi-Da; Yang, Fan-Ming] Hunan City Univ, Coll Mat & Chem Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构：
[Yang, FM ] H;Hunan City Univ, Coll Mat & Chem Engn, Yiyang 413000, Hunan, Peoples R China.
关键词：
Capacitance;Electrolytes;Hematite;High resolution transmission electron microscopy;Infrared spectroscopy;Ions;Porous materials;Potassium hydroxide;Scanning electron microscopy;Single crystals;Sodium sulfate;Sulfur compounds;X ray photoelectron spectroscopy;Energy density;Interplanar spacings;KOH;Porous;Pseudocapacitance;Rate capabilities;Rod-like;Symmetrics;Synthesised;Α-fe2O3;Supercapacitor
摘要：
Rod-like porous α-Fe2O3 was synthesized by static hydrothermal treatment at 160°C and used as a symmetric supercapacitor. The phase information, structure, morphology, valence state and composition of the prepared sample were characterized using X-ray diffraction, infrared spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy and N2 adsorption–desorption. The results show that the prepared α-Fe2O3 is a rod-like porous material dominated by mesopores. Moreover, the α-Fe2O3 is a hexagonal single crystal with [FeO6] octahedrons and the interplanar crystal spacings are large enough for electrolyte ion diffusion. In both KOH and Na2SO4 electrolytes, the α-Fe2O3 sample displays good pseudocapacitance performance. However, the specific discharge capacity and energy density in KOH are larger than in Na2SO4. In 1 mol L–1 of KOH, remarkable capacities of 139 and 35.5 F g–1 are obtained and an energy density of 3.91 and 1.01 Wh kg–1 is achieved at 1 and 20 A g–1 respectively. After 10 000 cycles, 87.7% of the specific capacitance is still retained at 1 A g–1. The good capacitance properties may attributed to the rod-like porous structure and large interplanar spacing, which provide good ion insertion–exit paths, enough oxidation–reduction active sites and a fast ion transfer velocity. © 2023 The Author(s) (or their employer(s)). Published by CSIRO Publishing.
语种：
英文
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Application of iterative distance correlation and PLS for wavelength interval selection in near infrared spectroscopy
作者：
Huang, Xin;Xia, Li
期刊：
Chemometrics and Intelligent Laboratory Systems ,2023年234:104756 ISSN：0169-7439
通讯作者：
Xin Huang
作者机构：
[Huang, Xin] Hunan City Univ, Management Sch, Yiyang 413000, Peoples R China.;[Xia, Li] Hunan City Univ, Sch Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Xin Huang] M;Management School, Hunan City University, Yiyang, 413000, PR China
关键词：
Iterative distance correlation;Near-infrared spectroscopy;Partial least squares;Wavelength interval selection
摘要：
Wavelength selection is a fundamental and critical step in near infrared spectral analysis, which can improve the prediction performance and enhance the interpretability of the model. Motivated by the appealing properties of the distance correlation, a novel wavelength interval selection algorithm, named iterative distance correlation combined with PLS regression (IDC-PLS), is developed. To obtain all the possible wavelength intervals, our method mainly consists of two steps. First, an effective iterative procedure based on distance correlation is used to screen wavelength interval variables. Then, build a series of PLS models by recursive using all the wavelength intervals but one interval until the optimal wavelength intervals obtain, which correspond the lowest root mean square error of prediction. The IDC-PLS integrates the advantages of distance correlation with PLS method, which is an efficient strategy to enhance the performance of PLS in wavelengths selection. The performance of IDC-PLS was tested on three real NIR datasets. The results demonstrate that IDC-PLS can improve prediction performance and efficiently select strongly correlated wavelength intervals related to the response. The proposed method may be a good wavelength interval selection strategy due to its simplicity and efficiency.
语种：
英文
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化工过程分析与合成中基于Aspen的优化问题教学
作者：
王立勤;贺国文;尹志芳;王锋;曹文秀
期刊：
广州化工 ,2023年(24):134-136 ISSN：1001-9677
作者机构：
湖南城市学院材料与化学工程学院
关键词：
化工过程分析与合成;优化问题;工程软件Aspen;案例式教学
摘要：
《化工过程分析与合成》是化工专业的专业核心课程,主要涉及化工过程系统的分析、合成和优化问题。纯粹的理论教学,不利于培养学生的工程实践能力。将工程软件Aspen引入课堂教学过程中,将有利于学生将理论知识正确应用于工程实践中...展开更多 《化工过程分析与合成》是化工专业的专业核心课程,主要涉及化工过程系统的分析、合成和优化问题。纯粹的理论教学,不利于培养学生的工程实践能力。将工程软件Aspen引入课堂教学过程中,将有利于学生将理论知识正确应用于工程实践中,提高工程能力。在理论知识的讲授过程中,结合工程案例,利用工程软件Aspen的优化模块,使优化问题的基本要素更加直观,使学生更加深入理解理论知识,为解决实际工程任务的优化问题奠定基础。收起
语种：
中文
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Nano TiC modified Ti(C,N)-based cermets with weakened rim-binder interfaces
作者：
Xie, Dan;Gan, Xueping;Xiong, Huiwen;Li, Zhiyou;Zhou, Kechao
期刊：
Materials Science and Engineering: A ,2022年845:143194 ISSN：0921-5093
通讯作者：
Huiwen Xiong
作者机构：
[Gan, Xueping; Xie, Dan; Zhou, Kechao; Li, Zhiyou; Xiong, Huiwen] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China.;[Xie, Dan] Hunan City Univ, Coll Mat & Chem Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构：
[Huiwen Xiong] S;State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan, 410083, China
关键词：
Bending strength;Fracture toughness;Morphology;Sintering;Tensile strength;Titanium carbide;Ar pressures;Core-rim structures;Diffusion-controlled;Metal-ceramic interface;Nano TiC;Nitrogen pressure;Ti(C,N)-based cermet;TiC powders;Ultra-fines;Ultrafine;Cermets
摘要：
In order to solve the problems of high internal stress of core-rim structure, and denitrification behavior of Ti(C, N)-based cermets, nano TiC powders were adopted to promote the diffusion-controlled formation of inner rims and to modify the metal-ceramic interfaces. Based on this, Ti(C,N)-based cermets with 0–8 wt% nano TiC were prepared via solid-state nitrogen-pressure sintering and subsequently Ar-pressure HIP sintering. Nano TiC refined the microstructure and resulted in more white core-rim phase with thicker rims, and ultrafine rimless Ti(C,N). Nano TiC greatly affected the rim-binder interfaces via shifting the equilibrium crystal morphology of (Ti,M) (C,N) in Ni–Co from cubic to octahedron. With the increasing nano TiC content, the orientation relationship of rim-binder interface changed from (200)rim//(111)binder to (111)rim//(111)binder, and the interface strain increaseds. Cermets with {200} rim-binder interface exhibited high bending strength but low fracture toughness and tensile strength, owing to the high bonding strength between rim and binder. Otherwise, weakening strength of the rim-binder interface could enhance the toughness via the breaking of ceramic-binder boundaries. A promising route for preparing Ti(C,N)-based cermets with satisfactory mechanical properties was put forward, via adjusting the rim-binder interfaces. © 2022 Elsevier B.V.
语种：
英文
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地质聚合物及其原位合成沸石去除水溶液中氟离子研究
作者：
黄毅;黄丽萍;余明洁
期刊：
环境科学与技术 ,2022年45(7):145-151 ISSN：1003-6504
作者机构：
[黄毅; 黄丽萍; 余明洁] 湖南城市学院材料与化学工程学院
关键词：
地质聚合物;原位合成;沸石;吸附;氟离子
摘要：
以NaOH和KOH混合碱液作激发剂,偏高岭土为固体原料,利用相同的工艺,分别制得地质聚合物和沸石样品,采用X射线衍射、扫描电子显微镜、比表面积和孔径分布分析对样品的物相和结构进行了表征,并将其用于水溶液中氟离子的吸附处理,探讨了其吸附去除氟离子的效率和特性。研究结果表明,沸石样品主要以I型钾沸石和F型钾沸石为主,比表面积为74.4 m~2/g,远高于地质聚合物的41.1 m~2/g。地质聚合物及其原位合成沸石对水溶液中氟离子都具有较好的吸附性能。在pH<4,温度为30 ℃条件下,地质聚合物样品最大氟离子吸附容量可达236.97 mg/g,沸石样品的吸附容量略大于地质聚合物。地质聚合物样品对氟离子的吸附等温线符合Langmuir模型,而沸石更符合Freundlich模型;两者的吸附动力学可用准二级动力学模型描述,属化学吸附过程。
语种：
中文
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The synthesis of zirconium and tetraethylenepentamine bi-functionalized TiO2 for efficient CO2 adsorption
作者：
Yang, Fan M.;Li, Li J.;He, Guo W.
期刊：
ENVIRONMENTAL ENGINEERING RESEARCH ,2022年27(6):210335-0 ISSN：1226-1025
通讯作者：
Yang, Fan M.(ychufei@163.com)
作者机构：
[He, Guo W.; Yang, Fan M.; Li, Li J.] Hunan City Univ, Coll Mat & Chem Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构：
[Yang, F.M.] C;College of Materials and Chemical Engineering, Hunan, China
关键词：
Adsorption;CO2;Tetraethylenepentamine;TiO2;ZrOCl2
摘要：
In the present work, zirconium-doped metal oxide of TiO2(ZrN) was synthesized and functionalized with different amount of tetraethylenepentamine (TEPA). The physical properties of the materials were tested using temperature-programmed desorption of NH3, X-ray diffractometer, X-ray photoelectron spectrometer, scanning electron microscope, transmission electron microscope, energy dispersion spectrum, Inductively coupled plasma atomic emission spectroscopy, Infrared spectrometer, N2 adsorption-desorption analyzer, energy dispersion spectrum and thermogravimetric analyzer. Zr species has a positive effect on the enhancement of the thermal stability and amine utilization. After the introduction of Zr, the decomposition temperature of TEPA is improved to 180℃. Over TEPA decorated adsorbents, physical adsorption and chemical adsorption occurs simultaneously. When the adsorption time is 75℃, CO2 flow rate is 20 mL/min, the adsorbent of TEPA(40)/TiO2(Zr0.1) exhibit a remarkable amine utilization of 83.5%. © 2022 Korean Society of Environmental Engineers.
语种：
英文
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纤维素酶辅助提取茶多糖的工艺研究
作者：
周晓红;陈洁冰;罗智;陈帅江;彭润芝;...
期刊：
湖南城市学院学报(自然科学版) ,2022年31(01):67-71 ISSN：1672-7304
作者机构：
[彭润芝; 陈洁冰; 罗智; 陈帅江; 刀彤] 湖南城市学院材料与化学工程学院;黑茶金花湖南省重点实验室;[周晓红] 湖南城市学院材料与化学工程学院<&wdkj&>黑茶金花湖南省重点实验室
关键词：
纤维素酶;“金花”茉莉花茶;茶多糖;抗氧化性
摘要：
以茉莉花茶为原料,通过添加冠突散囊菌（俗称"金花"）发酵液制备了"金花"茉莉花茶;采用纤维素酶辅助提取"金花"茉莉花茶中的茶多糖（teapolysaccharide,TPS）,并通过单因素和正交试验研究酶解时间、酶解温度、酶添加量对"金花"茉莉花茶中茶多糖提取效率的影响,获得了最佳提取工艺条件;进一步用1,2-二苯基-2-苦肼基（DPPH）考察了"金花"茉莉花中的茶多糖对DPPH自由基的清除作用.结果表明:当酶解时间为120 min,酶解温度为50℃和酶添加量为3%时,从"金花"茉莉花茶中提取茶多糖的效率最高,达104.25 mg/g;在抗氧化活性方面,相对于从茉莉花茶中提取的茶多糖,从"金花"茉莉花茶中提取的茶多糖对DPPH表现出了更好的清除作用.
语种：
中文
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基于核酸切割机理的荧光分析法检测水相中铜离子
作者：
胡伶俐;曾超;肖颖;刘长辉
期刊：
湖南城市学院学报(自然科学版) ,2022年31(4):74-78 ISSN：1672-7304
作者机构：
[胡伶俐] 湖南城市学院 材料与化学工程学院,湖南 益阳 413000;[胡伶俐] 湖南省产商品质量检验研究院,长沙 410007;[刘长辉; 曾超; 肖颖] 湖南城市学院
关键词：
铜离子;芬顿反应;阿霉素;聚集诱导发射;双链DNA
摘要：
铜离子(Cu2+)是生物体内一种不可或缺的微量元素,其含量异常易引发严重疾病﹒本文利用阿霉素(Dox)嵌入双链DNA(dsDNA)产生聚集诱导荧光淬灭,构建了一种铜离子核酸荧光探针(Dox/ds DNA),并在芬顿试剂(H2O2+Cu2+)作用下产生羟基自由基(·OH)切断dsDNA,实现阿霉素的荧光恢复﹒研究结果表明:当固定(H2O2)浓度为0.5 mmol/L、铜离子浓度为1.0~50 mol/L时,体系的荧光信号变化与铜离子浓度呈现良好的线性关系,此时检测限为0.3 mol/L;该探针具有响应速率快(<100 s)、选择性好和灵敏度高的优势.
语种：
中文
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