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Smart Gas Sensors:Recent Developments and Future Prospective

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Nano-Micro Letters 2025年第3期17卷 55-86页

作者： Boyang Zong shufang Wu Yuehong yang Qiuju Li Tian Tao shun Mao College of Environmental Science and Engineering Biomedical Multidisciplinary Innovation Research InstituteShanghai East HospitalState Key Laboratory of Pollution Control and Resource ReuseTongji University1239 Siping RoadShanghai 200092People’s Republic of China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092People’s Republic of China Microbiome Medicine Center Department of Laboratory MedicineZhujiang HospitalSouthern Medical UniversityGuangzhou 510280People’s Republic of China

Gas sensor is an indispensable part of modern society withwide applications in environmental monitoring,healthcare,food industry,public safety,*** the development of sensor technology,wireless communication,smart monitoring terminal,cloud storage/computing technology,and artificial intelligence,smart gas sensors represent the future of gassensing due to their merits of real-time multifunctional monitoring,earlywarning function,and intelligent and automated *** electronicand optoelectronic gas sensors have been developed for high-performancesmart gas *** the development of smart terminals and the maturityof integrated technology,flexible and wearable gas sensors play an increasingrole in gas *** review highlights recent advances of smart gassensors in diverse *** structural components and fundamentalprinciples of electronic and optoelectronic gas sensors are described,andflexible and wearable gas sensor devices are ***,sensorarray with artificial intelligence algorithms and smart gas sensors in“Internet of Things”paradigm are ***,the challengesand perspectives of smart gas sensors are discussed regarding the future need of gas sensors for smart city and healthy living.

关键词： Smart gas sensor Electronic sensor Optoelectronic sensor Flexible and wearable sensor Artificial intelligence

Modeling tactile perceived intensity for vibration from a coin eccentric rotating mass motor

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Science China Technological Sciences 2025年

作者： yun FANG Jingchen HUANG Yujun WU Jiaqi DONG Weichao GUO Xinjun SHENG State Key Laboratory of Mechanical System and Vibration School of Mechanical Engineering Shanghai Jiao Tong University Meta Robotics Institute Shanghai Jiao Tong University

Establishing the relationship between vibrotactile parameters and perceived intensity（PI） is of great significance in the regulation of desired sensations, which contribute to haptic interfaces in practical applications. Coin eccentric rotating mass（ERM） motors are routinely utilized due to their lightweight design and efficient ability to evoke strong tactile sensations. By adjusting input voltages, ERMs can yield different stimuli, but the effects of their physical properties on PI remain ***, we developed the physical model of the ERM-skin system and optimized the parameters affecting PI. Moreover, the relationship between stimulus and perception was derived based on Fechner?s law. Three experiments were conducted on fifteen subjects（ten males and five females, aged 24.40 ± 2.87 years） to identify the vibration parameters and corresponding PI to verify the proposed PI model. ERMs in this study were attached to phantom skin/forearm with slim adhesive tape to minimize the interference. Experiment 1 performed vibration calibration with ERM attached to the skin phantom to simulate the actual configuration. Then, the relative and absolute PI of subjects on specific stimuli were acquired in Experiments 2 and *** fitting reliability of the proposed PI model was evaluated on fifteen subjects with R2of 0.73 ± 0.07 and root mean squared error（RMSE） of 1.35 ± 0.28. Overall, the proposed PI model established the quantitative relationship between stimulus parameters（vibration parameters and physical parameters） and subjective PI, which provided theoretical support for ERM optimization and vibrotactile modulation.

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超声协同热处理对菜籽蛋白结构及溶解性的影响

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食品科学 2025年第1期46卷 100-107页

作者：赵康妤杨萍马俊坤舒文静杨凤谢伊莎刘庆庆西华大学食品与生物工程学院川渝共建特色食品重庆市重点实验室四川成都610039 南昌大学食品学院江西南昌330027

研究超声(200、400、600 W)协同热处理(25、60、90℃)改性对菜籽蛋白结构及溶解性的影响。结果表明:单独热处理时,随着温度的升高,蛋白质发生热聚集,粒径从1188.18 nm增至5630.00 nm,溶解度从8.6%降至5.6%,并伴随Zeta电位绝对值减小,蛋... 详细信息

研究超声(200、400、600 W)协同热处理(25、60、90℃)改性对菜籽蛋白结构及溶解性的影响。结果表明:单独热处理时,随着温度的升高,蛋白质发生热聚集,粒径从1188.18 nm增至5630.00 nm,溶解度从8.6%降至5.6%,并伴随Zeta电位绝对值减小,蛋白构象从有序转变为无序;热处理协同超声处理时,蛋白分子空间结构展开,肽键断裂,疏水性基团暴露,与仅25℃热处理相比,协同超声(600 W)促进蛋白聚集体破裂,粒径降至1155.27 nm,暴露出更多极性基团,带电残基增多,表面疏水性增加,二级结构发生相互转化,蛋白的溶解度得到显著改善(升至57.31%)。本研究结果可为菜籽蛋白复合改性及溶解性相关研究提供科学依据。

关键词：超声波菜籽蛋白协同作用蛋白结构热处理溶解度

Distinct MLT asymmetry of auroral kilometric radiation observed by the FAST satellite

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Earth and Planetary Physics 2025年第1期9卷 188-193页

作者： JiaWen Tang Sai Zhang FuLiang Xiao HongMing yang Si Liu YiHua He Chang yang YuYue Jin ZhouKun Deng Ping Li Archie James Johnston School of Physics and Electronic Sciences Changsha University of Science and TechnologyChangsha 410114China Hunan Province Higher Education Key Laboratory of Modeling and Monitoring on the Near-Earth Electromagnetic Environments Changsha University of Science and TechnologyChangsha 410114China School of Electrical and Information Engineering Changsha University of Science and TechnologyChangsha 410114China

Auroral Kilometric Radiation (AKR) is a common radio emission,which can contribute to the magnetosphere-ionosphereatmosphere co u *** emissions have been observed in all magnetic planet magnetospheres of the solar *** this study,using observations from the FAST satellite from 30 August 1996 to 9 September 2001,the distribution of AKR in altitude=500-4500 km and invariant latitude (|ILAT|)=60°-80°has been analyzed.63045 AKR samples have been identified with~48%(52%) samples on the dayside (nightside).Of considerable interest,there is a distinct MLT asymmetry with the high occurrence rate in MLT=05-08 and 18-22(02-05 and 12-17) in the northern (southern) *** distinct MLT asymmetry is associated with the direction of Bxof the interplaneta ry magnetic *** addition,the occurrence rate on the nightside clearly increases as the AE^(*) index *** study further enriches the information and understanding of AKR in the magnetosphere as well as other similar radio emissions.

关键词： asymmetry auroral kilometric radiation interplanetary magnetic field

Constructing quasi-2D perovskite to collect hot carriers to reduce open-circuit voltage loss for efficient inverted perovskite solar cells

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Science China Chemistry 2025年

作者： Lei Gu Xing Li Chao Wu yang Feng Chunming yang Lin Song Frontiers Science Center for Flexible Electronics Institute of Flexible Electronics Northwestern Polytechnical University Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences

Inverted perovskite solar cells （PSCs） have received great attention owing to the high certificated power conversion efficiency（PCE） reaching 26.7%. However, interfacial charge recombination is far superior to perovskite bulk charge recombination due to the use of fullerenes and their derivatives in inverted perovskite solar cells, which induces devastating open circuit voltage（VOC） losses. For this reason the present work attempts to use 4-chloropiperidine hydrochloride for the upper surface modification of perovskite to construct a quasi-two-dimensional （2D） structure with suitable 2D layer widths （n=2, 3 dominant）,which has a smaller electron carrier transport barrier without sacrificing short-circuit current （JSC） in the device. This strategy effectively passivates the interfacial defect states while promoting energy level alignment to achieve carrier dissociation and equilibrium transport at the interface, which in turn resulted in improved fill factor （FF）. In addition, additional energy levels are provided by 2D perovskites to collect hot carriers, resulting in improved device open circuit voltage （VOC）. As a result, the device PCE increases from 22.37%to 24.11%after the 4CPD treatment. In addition, the 4CPD-treated PSCs maintain 90%of the initial PCE after storage in an N2atmosphere at 50°C for 1,080 h, whereas the control devices show a 15%PCE loss under the same aging conditions. This work provides new opportunities to suppress interfacial charge recombination in inverted devices.

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Antioxidant and Anti-aging Activities of Silybum Marianum Protein Hydrolysate in Mice Treated with D-galactose

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Biomedical and Environmental Sciences 2017年第9期30卷 623-631页

作者： ZHU shu yun JIANG Ning TU Jie yang Jing ZHOU Yue School of Food and Biological Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina JiangsuHengshun Group Co.Ltd. Zhenjiang 212000JiangsuChina Institute of Vegetables Jiangsu Academy ofAgricultural SciencesNanjing 210014JiangsuChina College of Biotechnology Jiangsu University of Scienceand TechnologyZhenjiang 212018JiangsuChina

Objective In the present study, we investigated the antioxidant and anti‐aging effects of Silybum marianum protein hydrolysate（SMPH） in D‐galactose‐treated mice. Methods D‐galactose（500 mg/kg body weight） was intraperitoneally injected daily for 7 weeks to accelerate aging, and SMPH（400, 800, 1,200 mg/kg body weight, respectively） was simultaneously administered orally. The antioxidant and anti‐aging effects of SMPH in the liver and brain were measured by biochemical assays. Transmission electron microscopy（TEM） was performed to study the ultrastructure of liver mitochondria. Results SMPH decreased triglyceride and cholesterol levels in the D‐galactose‐treated mice. It significantly elevated the activities of superoxide dismutase（SOD） and glutathione peroxidase（GSH‐Px）, and total antioxidant capacity（T‐AOC）, which were suppressed by D‐galactose. Monoamine oxidase（MAO） and malondialdehyde（MDA） levels as well as the concentrations of caspase‐3 and 8‐OHd G in the liver and brain were significantly reduced by SMPH. Moreover, it increased Bcl‐2 levels in the liver and brain. Furthermore, SMPH significantly attenuated D‐galactose‐induced liver mitochondrial dysfunction by improving the activities of Na＋‐K＋‐ATPase and Ca2＋‐Mg2＋‐ATPase as well as mitochondrial membrane potential（ΔΨm） and fluidity. TEM showed that the degree of liver mitochondrial damage was significantly decreased by SMPH. Conclusion The results indicated that SMPH protects against D‐galactose‐induced accelerated aging in mice through its antioxidant and anti‐aging activities.

关键词： Silybum marianum protein hydrolysate Antioxidant Anti‐aging D‐galactose

基于CNN和Transformer交叉教学的半监督医学图像分割

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陕西科技大学学报 2025年第1期43卷 185-192页

作者：杨云胡雯青杨虹吴亚男陕西科技大学电子信息与人工智能学院陕西西安710021 西安富德医疗电子有限公司陕西西安710075 西安计量技术研究院陕西西安710199

由于医学图像分割领域缺乏高质量的标注数据,半监督学习方法在医学图像语义分割任务中受到高度重视.为了充分利用卷积神经网络(Convolutional Neural Network,CNN)和Transformer在半监督学习中的优势,本文提出一种基于CNN与Transformer... 详细信息

由于医学图像分割领域缺乏高质量的标注数据,半监督学习方法在医学图像语义分割任务中受到高度重视.为了充分利用卷积神经网络(Convolutional Neural Network,CNN)和Transformer在半监督学习中的优势,本文提出一种基于CNN与Transformer交叉教学的半监督医学图像分割方法.该方法将经典的深度协同训练从一致性正则化简化为交叉教学,利用循环伪标签方案使两个网络的预测差异转换为无监督损失,以鼓励两个网络具有一致的低熵预测.所提方法在ISIC 2018数据集上进行实验,在采用20%的标注比例时,Dice系数和Jaccard系数分别达到87.25%和79.17%,相比于监督U-Net++的训练结果分别提升了2.89%和3.53%,并且优于目前主流的半监督学习方法,验证了所提方法在半监督医学图像分割上的有效性和泛化性.

关键词：半监督学习图像语义分割交叉教学循环伪标签

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Mesh-supported V2O5-WO3/TiO2 nanosheet array catalysts for efficient removal of NOx

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Tungsten 2025年第1期7卷 100-111页

作者： Zhi-Qi Zhang Liu yang Wen Luo Vladimir An Jing Li Bao-Dan Liu School of Materials Science and Engineering Northeastern University Foshan Graduate School of Innovation Northeastern University Kizhner Research Center School of Advanced Manufacturing Technologies Tomsk Polytechnic University

The design and synthesis of vanadium-based denitration catalysts with low-temperature activity pose significant challenges in the field of toxic gas *** this study,we have developed a novel approach to fabricate highly efficient V2O5-WO3/TiO2monolithic mesh catalysts for NOxreduction at low ***,TiO2nanosheets with strong adhesion and large surface area were grown on Ti mesh using plasma electrolytic oxidation technology and hydrothermal ***,super-small traces of WO3and V2O5active nano-species were subsequently deposited on TiO2nanosheets using the deposition-precipitation *** to traditional ceramic-based V2O5-WO3/TiO2catalysts,our V2O5-WO3/TiO2monolithic mesh catalyst exhibits superior mechanical performance,excellent thermal conductivity,lower pressure drop,higher utilization of active components,and stronger synergistic ***,the V2O5-WO3/TiO2monolithic mesh catalysts exhibited excellent low-temperature catalytic activity with 98% of NOxconversion at 220℃,and remarkable long-term SO2tolerance and water resistance in the selective catalytic reduction（SCR） of NOxwith *** SCR reaction of tiny V2O5and WO3active species supported on TiO2nanosheets directly demonstrated to follow the Eley-Rideal mechanism by in situ infrared spectra.

关键词： Low temperature activity Monolithic mesh catalysts NH3-SCR SO2 tolerance V2O5-WO3/TiO2

Meta-analysis of the Occurrence Characteristics and Influencing Factors of Microplastics in Agricultural Soil in China

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Huanjing Kexue/Environmental Science 2025年第1期46卷 498-509页

作者： Wu, Ting Jiao, yang-yang Jiao, Hai-Hua School of Life Science Shanxi Normal University Taiyuan 030032 China Department of Life Sciences Changzhi University Changzhi 046011 China Henan Institute of Advanced Technology Zhengzhou University Zhengzhou 450003 China

The potential threat of soil microplastics（MPs，particle sizes smaller than 5 mm）to the agricultural environment and food security production has become a hot issue，but there are few systematic studies on the characteristics and influencing factors of MP pollution in agricultural soil in China. Based on the data of soil MPs and related environmental factors（temperature，precipitation，soil pH，and organic carbon）and social and economic factors（permanent population，gross regional product per capita，gross industrial product per capita，and cultivated land area per capita）extracted from 6 694 samples from 85 published studies from 2020 to 2023，meta-analysis was performed. The characteristics of MPs pollution in agricultural soil and the key factors affecting the accumulation of MPs in soil in six administrative regions of China were analyzed. The results showed that soil MPs had six colors：（semi-）transparent，black，white，yellow，blue，green，and red. There were five kinds of shapes：fragment，fiber，film，particle，and foam. The particle size was between 0.01 and 5.0 mm. There were nine types of MPs：polyethylene（PE），polypropylene（PP），polystyrene（PS），polyester（PES），polyethylene terephthalate（PET），polyvinyl chloride （PVC），rayon（RY），polyacrylonitrile（PAN），and polyamide（PA）. The abundance gradient of soil MPs in different regions was as follows：South-central region > Northwest region > Southwest region > East China region > North China region > Northeast region. The（semi-）transparent（27.6%），fragmented（32.2%），0.01~0.5 mm（66.3%），and PE （37%）types of MPs had the highest detection rates. The characteristics of soil MPs are the result of natural environmental factors（temperature，precipitation，soil pH，organic carbon）and social factors（permanent population，gross regional product per capita，gross industrial product per capita，cultivated land area per capita）. © 2025 Science Press. All rights reserved.

关键词： Polyvinyl chlorides