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Multiple interface coupling on natural tourmaline enables high-efficiency removal of antibiotic:Superior property and mechanism

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Journal of Environmental Sciences 2024年第6期140卷 242-254页

作者： Jingjing Cui Xiangyu liu Feifan qie.Chengzhe Xie Qingdong He Jian liu Steven L.Suib Wenbo Wang College of Chemistry and Chemical Engineering Inner Mongolia UniversityHohhot 010021China Department of Chemistry University of ConnecticutStorrsCT 06269-3060United States

Reasonably designing highly active,environmentally friendly,and cost-effective catalysts for efficient elimination of pollutants from water is desirable but ***,an efficient heterogeneous photo-Fenton catalyst tourmaline(TM)/tungsten oxide(WO_(3-x))(named TW10)containing tungsten/boron/iron(W/B/Fe)synergistic active centers and 90%of cheap natural tourmaline(TM)mineral rich in Fe and B *** TW10 catalyst can quickly activate peroxymonosulfate(PMS)to generate massive active free radicals,which may induce the rapid and efficient degradation of tetracycline(TC).The TW10/PMS/Visible light system can effectively degrade up to 98.7%of tetracycline(TC)in actual waters(***,Yellow River,and Yangtze River water),and the catalytic degradation rates reach 1.65,5.569,and 2.38 times higher than those of TM,WO_(3-x),and commercial P25(Degussa,Germany),*** addition,the catalyst can be recycled and reused multiple *** spin resonance spectroscopy(EPR),X-ray photoelectron spectroscopy(XPS),and liquid chromatograph-mass spectrometer(LC-MS)analyses confirm that the synergistic catalytic effect of W/B/Fe sites on the TW10 catalyst accelerates the electron transfer between Fe(Ⅱ)and Fe(Ⅲ),as well as between W(Ⅴ)and W(Ⅵ),and thus promotes the rapid degradation of *** catalytic reaction mechanism and degradation pathway of TC were *** work provides a feasible route for the design and development of new eco-friendly and efficient catalyst.

关键词： Tourmaline(TM) Fenton-like catalyst Tungsten oxide Peroxymonosulfate Antibiotic

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Functional properties of defatted chickpea flour heat-induced gels

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International Journal of Agricultural and Biological Engineering 2024年第2期17卷 280-286页

作者： Chonghao Bi Aoxue qie.Tong Zhou Yi liu Bin Tian School of Artificial Intelligence Beijing Technology and Business UniversityBeijing 100048China

Defatted chickpea flour(DCF),which is a by-product of chickpea oil extraction industry,is rich in nutrients that are beneficial to human *** this study,the effects of temperature and DCF variation on the rheological properties,water holding capacity,freeze-thaw stability and microstructure of DCF heat induced gels were *** results showed that the viscoelasticity,frequency dependence,and resistance strength of heat induced gels increased significantly with the increase of temperature and DCF *** degree of denaturation and water retention of heat induced gels increased significantly with increased variables within the temperature and variation windows of 75℃ to 95℃ and 13%to 21%.The CLSM results revealed that variations of both temperature and DCF variation could cause the proteins in the heat induced gels to aggregate gradually and to form protein *** temperature or variation exceeded certain value(85℃ or 17%),the protein aggregations broke up and the protein clusters became smaller and more ***,the heat induced gels presented better water holding capacity,viscoelasticity,structural stability and gel property at a temperature of 95℃ or a DCF variation of 21%within the present experimental range.

关键词： defatted chickpea flour rheological property freeze-thaw stability water holding capacity microstructure

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Gradient layered MXene/Fe_(3)O_(4)@CNTs/TOCNF ultrathin nanocomposite paper exhibiting effective electromagnetic shielding and multifunctionality

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Nano Research 2024年第9期17卷 8233-8242页

作者： Zhengkun Ma Jingzong He Shilin liu Xiaoxuan qie.Meiheng Gan Ruonan Cheng Qilin Wu Malcolm Xing State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China College of Chemistry and Chemical Engineering Donghua UniversityShanghai 201620China Department of Mechanical Engineering University of ManitobaWinnipegMB R3T 2N2Canada

As wearable electronic devices are rapidly developing,there is an urgent need for lightweight,flexible,and ultrathin multifunctional electromagnetic interference(EMI)shielding ***,the flexible ultrathin paper that combines efficient shielding and multifunctional integration remains a considerable ***,a novel MXene/Fe_(3)O_(4)@CNTs/TOCNF(MCT,MXene=transition metal carbide/carbonitride,CNTs=carbon nanotubes,TOCNF=TEMPO-oxidized cellulose nanofiber,TEMPO=2,2,6,6-tetramethylpiperidine-1-oxyl radical)nanocomposite paper with a multilayer electromagnetic gradient structure and electromagnetic dual losses was successfully prepared by a simple filtration *** from effective gradient design and adjusting the proportion of TOCNF,the composite paper(only 18μm)exhibits outstanding shielding effectiveness(SE)of 66 dB in the X-band,ultrahigh thickness-specific SE and surface-specific SE values of 3300 dB·mm-1 and 31,428 dB·cm^(2)·g^(-1)***,dehydroxylation treatment improves MCT paper's hydrophobicity,environmental stability,and mechanical strength,expanding its range of ***,the highly efficient Joule heating properties and hydrophobicity provide MCT additional de-icing *** also simulated the electromagnetic shielding effects of MCT composite paper,which was applied in *** study documents an innovative and intriguing material combination,providing a simple and effective manufacturing strategy for developing EMI shielding *** paper is highly suitable for outdoor portable or wearable electronic devices and has significant application potential in humid/severe cold environments.

关键词： cellulose fiber thin papers nanocomposites electromagnetic interference(EMI)shielding

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Low-Volatile Binder Enables Thermal Shock-Resistant Thin-Film Cathodes for Thermal Batteries

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Energy & Environmental Materials 2024年第4期7卷 126-134页

作者： Yong Xie Yong Cao Xu Zhang Liangping Dong Xiaojiang liu Yixiu Cui Chao Wang Yanhua Cui Xuyong Feng Hongfa Xiang Long qie Laboratory of Electrochemical Power Sources Institute of Electronic Engineering China Academy of Engineering Physics School of Materials Science and Engineering Hefei University of Technology State Key Laboratory of Material Processing and Die & Mold Technology School of Materials Science and Engineering Huazhong University of Science and Technology

Manufacturing thin-film components is crucial for achieving high-efficiency and high-power thermal batteries (TBs).However,developing binders with low-gas production at the operating temperature range of TBs (400-550℃)has proven to be a significant ***,we report the use of acrylic acid derivative terpolymer (LA136D) as a low-volatile binder for thin-film cathode fabrication and studied the chain scission and chemical bondbreaking mechanisms in pyrolysis.

关键词： gas production high-power low-volatile binder thermal battery thin-film cathode

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Effects of the addition of edible polysaccharides on the properties of soybean protein isolate gels

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International Journal of Agricultural and Biological Engineering 2024年第3期17卷 241-248页

作者： Chonghao Bi Aoxue qie.Xueying Wang Tong Zhou Shangyi Chi Yi liu Bin Tian School of Artificial Intelligence Beijing Technology and Business UniversityBeijing 100048China

The gel properties of soybean isolate protein(SPI)gels are susceptible to the influence of other components in food products,particularly edible ***,six common edible polysaccharides were selected in this study to investigate their effects on the rheological properties,thermal properties,and microstructure of acid-induced soybean isolate protein self-assembled gels(SPIASG).The experimental results showed that the support capacity and creep recovery of SPIASG with added polysaccharides were higher than those of the control group without added polysaccharides,and the gel with Xanthan gum(XG)was the most *** hybrid gel,with added Condensed resin(CR),Xanthan gum(XG),Carrageenan(CA),and CMC formed a stronger network ***,compared with SPIASG,the hybrid gel with added edible polysaccharides the water-holding capacity of SPI hybrid gels was relatively *** this study,a simple and easy method was obtained to significantly improve the gel properties of SPIASG,analyzed and compared the effectiveness of various polysaccharides to enhance its gel properties,and provided some ideas to improve the gel properties of SPI protein gels.

关键词： soybean protein isolate gels self-assembled gels edible polysaccharides rheological properties

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Concurrence of high dust aerosol and stratosphere-intruded ozone pollution in super sandstorms

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Science Bulletin 2024年第16期69卷 2509-2513页

作者： Zhixiong Chen Jane liu Xiushu qie.Xugeng Cheng Mengmiao Yang Lei Shu Jing M.Chen Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education School of Geographical SciencesFujian Normal UniversityFuzhou 350117China Key Laboratory of Atmospheric Environment and Extreme Meteorology Chinese Academy of SciencesBeijing 100029China Department of Geography and Planning University of TorontoToronto M5S 3G3Canada Key Laboratory of Middle Atmosphere and Global Environment Observation(LAGEO) Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Science University of Chinese Academy of SciencesBeijing 100049China

The air quality in China has substantially improved in recent years,as indicated by the declining trends in SO_(2),NO_(2),PM_(2.5)and PM_(10)*** the reduced anthropogenic pollutant emissions;however,sustained increases in surface ozone(O_(3))that may impair the effectiveness of clean air actions have been ***,complex heavy pollution episodes can still occur,and some of these episodes are closely linked with *** example,two severe sandstorms occurred successively in the early spring of 2021 in North China,despite the sandstorm frequency in China having significantly decreased in recent years[1-3].

关键词： ozone sands aerosol

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考虑新能源不确定性的暂态稳定预防控制结构优化方法

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电力自动化设备 2024年第9期44卷 41-48页

作者：郄朝辉李威姜涛刘福锁东北电力大学电气工程学院吉林吉林132012 南瑞集团有限公司(国网电力科学研究院有限公司) 江苏南京211106

新能源不确定性对电网在线预防控制的影响已逐渐由量变向质变转变,预防控制寻优的复杂度和计算量大幅提高。为满足在线预防控制求解质量和求解效率的需求,将机器学习、结构优化方法和时域仿真方法相结合。为降低在线计算量,分析典型系... 详细信息

新能源不确定性对电网在线预防控制的影响已逐渐由量变向质变转变,预防控制寻优的复杂度和计算量大幅提高。为满足在线预防控制求解质量和求解效率的需求,将机器学习、结构优化方法和时域仿真方法相结合。为降低在线计算量,分析典型系统的电网稳定性函数结构,在此基础上利用机器学习方法离线构建稳定域。为解决控制措施冲突的问题,引入结构优化方法,构建预防控制的二次约束规划模型,实现预防控制措施的协调以及模型的快速求解。为保证控制措施的可靠性,基于可信性评价指标筛选高风险算例,通过迭代计算使所有高风险场景时域校核的结果均稳定。在实际电网中验证了所提方法的可行性与有效性。

关键词：不确定性预防控制暂态稳定稳定域算例筛选

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电网频率校正控制方法在高比例新能源电网的适应性

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电网技术 2024年第4期48卷 1543-1550,I0048页

作者：郄朝辉李威姜涛刘福锁李兆伟现代电力系统仿真控制与绿色电能新技术教育部重点实验室(东北电力大学) 吉林省吉林市132012 南瑞集团有限公司(国网电力科学研究院有限公司) 江苏省南京市211106

新能源出力由自然禀赋决定,在电力平衡约束下的高比例新能源电网运行方式调整范围逐渐增加,传统固定策略的频率校正控制方法失配风险不断提高。建立典型系统,给出了研究频率校正控制的电网运行场景域描述方法,计算了频率校正控制系统任... 详细信息

新能源出力由自然禀赋决定,在电力平衡约束下的高比例新能源电网运行方式调整范围逐渐增加,传统固定策略的频率校正控制方法失配风险不断提高。建立典型系统,给出了研究频率校正控制的电网运行场景域描述方法,计算了频率校正控制系统任一轮次适应的电网运行场景域。提出将控制量可整定的范围作为评价任一轮次适应性的指标,使用多个轮次的最小可整定范围评价频率校正控制系统的适应性。利用实际电网参数建立分析模型,计算频率校正控制系统适应的极限新能源接入比例。传统频率校正控制方法难以适应新能源比例高的场景,亟需新型控制方法。

关键词：频率校正控制失配风险新能源调频能力极限接入比例

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不确定性环境下维纳模型的随机变分贝叶斯学习

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自动化学报 2024年第6期50卷 1185-1198页

作者：刘切李俊豪王浩曾建学柴毅重庆大学自动化学院重庆400044

多重不确定性环境下的非线性系统辨识是一个开放问题.贝叶斯学习在描述、处理不确定性方面具有显著优势,已在线性系统辨识方面得到广泛应用,但在非线性系统辨识的应用较少,且面临概率估计复杂、计算量大等难题.针对上述问题,以典型维纳(... 详细信息

多重不确定性环境下的非线性系统辨识是一个开放问题.贝叶斯学习在描述、处理不确定性方面具有显著优势,已在线性系统辨识方面得到广泛应用,但在非线性系统辨识的应用较少,且面临概率估计复杂、计算量大等难题.针对上述问题,以典型维纳(Wiener)非线性过程为对象,提出基于随机变分贝叶斯的非线性系统辨识方法.首先对过程噪声、测量噪声以及参数不确定性进行概率描述;然后利用随机变分贝叶斯方法对模型参数进行后验估计.在估计过程中,利用随机优化思想,仅利用部分中间变量概率信息估计模型参数分布的自然梯度期望,与利用所有中间变量概率信息估计模型参数比较,显著降低了计算复杂性.该方法是首次在系统辨识领域中的应用.最后,利用一个仿真实例和一个维纳模型的Benchmark问题,证明了该方法在对大规模数据下非线性系统辨识的有效性.

关键词：非线性系统辨识随机优化变分贝叶斯维纳模型

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跨模态语义时空动态交互情感分析研究

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计算机工程与应用 2024年第1期60卷 165-173页

作者：屈立成郤丽媛刘紫君魏思董哲为长安大学信息工程学院西安710064

针对传统情感分析中存在的模态间交互性差、时空特征融合度低的问题,建立了一种跨模态的语义时空动态交互网络。通过引入双向长短期记忆网络挖掘各模态的时间序列特征,加入自注意力机制强化模态内特征的权重赋值,将自动筛选出的特征矩... 详细信息

针对传统情感分析中存在的模态间交互性差、时空特征融合度低的问题,建立了一种跨模态的语义时空动态交互网络。通过引入双向长短期记忆网络挖掘各模态的时间序列特征,加入自注意力机制强化模态内特征的权重赋值,将自动筛选出的特征矩阵送入图卷积神经网络进行语义交互。然后以时间戳为基础进行特征聚合,计算聚合层的相关系数,获得融合后的联合特征,实现跨模态空间交互,最终完成情感极性的分类与预测。使用公开数据集对所提出的模型进行评估验证,实验结果表明,多模态时间序列提取和跨模态语义空间交互机制可以实现模态内和模态间特征的全动态融合,有效地提升了情感分类的准确率和F1值,在CMU-MOSEI数据集上分别提高了1.7%~13.5%和2.1%~14.0%,表现出良好的健壮性和先进性。

关键词：跨模态情感分析语义交互时空交互双向长短期记忆网络图卷积网络

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