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MIR1868 negatively regulates rice cold tolerance at both the seedling and booting stages

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The Crop Journal 2024年第2期12卷 375-383页

作者： Yang Shen Xiaoxi Cai Yan Wang Wanhong Li Dongpeng Li Hao Wu Weifeng Dong Bowei Jia Mingzhe Sun Xiaoli Sun Crop Stress Molecular Biology Laboratory Heilongjiang Bayi Agricultural UniversityDaqing 163319HeilongjiangChina

Low temperature causes rice yield losses of up to 30%–40%,therefore increasing its cold tolerance is a breeding *** genes in rice are reported to confer cold tolerance at both the vegetative and reproductive *** study revealed a rice-specific 24-nt miRNA,miR1868,whose accumulation was suppressed by cold *** of MIR1868 increased seedling survival,pollen fertility,seed setting,and grain yield under cold stress,whereas its overexpression conferred the opposite *** of MIR1868 increased reactive oxygen species(ROS)scavenging and soluble sugar content under cold stress by increasing the expression of peroxidase genes and sugar metabolism genes,and its overexpression produced the opposite ***,MIR1868 negatively regulated rice cold tolerance via ROS scavenging and sugar accumulation.

关键词： Rice Cold tolerance miRNA ROS scavenging Soluble sugar accumulation

Boosting Adversarial Training with Learnable Distribution

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Computers, Materials & Continua 2024年第3期78卷 3247-3265页

作者： Kai Chen Jinwei Wang James Msughter Adeke Guangjie Liu Yuewei Dai School of Electronics and Information Engineering Nanjing University of Information Science and TechnologyNanjing210044China Key Laboratory of Intelligent Support Technology for Complex Environments Ministry of EducationNanjing210044China School of Computer and Software Nanjing University of Information Science and TechnologyNanjing210044China Nanjing Center for Applied Mathematics Nanjing211135China

In recent years,various adversarial defense methods have been proposed to improve the robustness of deep neural *** training is one of the most potent methods to defend against adversarial ***,the difference in the feature space between natural and adversarial examples hinders the accuracy and robustness of the model in adversarial *** paper proposes a learnable distribution adversarial training method,aiming to construct the same distribution for training data utilizing the Gaussian mixture *** distribution centroid is built to classify samples and constrain the distribution of the sample *** natural and adversarial examples are pushed to the same distribution centroid to improve the accuracy and robustness of the *** proposed method generates adversarial examples to close the distribution gap between the natural and adversarial examples through an attack algorithm explicitly designed for adversarial *** algorithm gradually increases the accuracy and robustness of the model by scaling ***,the proposed method outputs the predicted labels and the distance between the sample and the distribution *** distribution characteristics of the samples can be utilized to detect adversarial cases that can potentially evade the model *** effectiveness of the proposed method is demonstrated through comprehensive experiments.

关键词： Adversarial training feature space learnable distribution distribution centroid

Waste Cotton-Derived Fiber-Based Thermoelectric Aerogel for Wearable and Self-Powered Temperature-Compression Strain Dual-Parameter Sensing

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Engineering 2024年第8期39卷 235-243页

作者： Xinyang He Mingyuan Liu Jiaxin Cai Zhen Li Zhilin Teng Yunna Hao Yifan Cui Jianyong Yu Liming Wang Xiaohong Qin Key Laboratory of Textile Science&Technology Ministry of EducationCollege of TextilesDonghua UniversityShanghai 201620China Key Laboratory of Science and Technology of Eco-Textiles Ministry of EducationJiangnan UniversityWuxi 214122China innovation Center for Textile Science and Technology Donghua UniversityShanghai 201620China

The rapid development of the global economy and population growth are accompanied by the production of numerous waste *** leads to a waste of limited resources and serious environmental pollution problems caused by improper *** rational recycling of wasted textiles and their transformation into high-value-added emerging products,such as smart wearable devices,is ***,we propose a novel roadmap for turning waste cotton fabrics into three-dimensional elastic fiber-based thermoelectric aerogels by a one-step lyophilization process with decoupled self-powered temperature-compression strain dual-parameter sensing *** thermoelectric aerogel exhibits a fast compression response time of 0.2 s,a relatively high Seebeck coefficient of 43μV·K^(-1),and an ultralow thermal conductivity of less than 0.04 W·m^(-1)·K^(-1).The cross-linking of trimethoxy(methyl)silane(MTMS)and cellulose endowed the aerogel with excellent elasticity,allowing it to be used as a compressive strain sensor for guessing games and facial expression *** addition,based on the thermoelectric effect,the aerogel can perform temperature detection and differentiation in self-powered mode with the output thermal voltage as the stimulus ***,the wearable system,prepared by connecting the aerogel-prepared array device with a wireless transmission module,allows for temperature alerts in a mobile phone application without signal interference due to the compressive strains generated during ***,our strategy is significant for reducing global environmental pollution and provides a revelatory path for transforming waste textiles into high-value-added smart wearable devices.

关键词： Waste textiles High value-added recycling Thermoelectrics Elasticity Decoupled sensing

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多功能热电织物用于可穿戴无线传感系统

Engineering 2024年第4期35卷 158-167页

作者： Xinyang He Jiaxin Cai Mingyuan Liu Xuepeng Ni Wendi Liu Hanyu Guo Jianyong Yu Liming Wang Xiaohong Qin Key Laboratory of Textile Science&Technology Ministry of EducationCollege of TextilesDonghua UniversityShanghai 201620China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China innovation Center for Textile Science and Technology Donghua UniversityShanghai 201620China

Flexible thermoelectric materials play an important role in smart wearables,such as wearable power generation,self-powered sensing,and personal thermal ***,with the rapid development of Internet of Things(IoT)and artificial intelligence(AI),higher standards for comfort,multifunctionality,and sustainable operation of wearable electronics have been proposed,and it remains challenging to meet all the requirements of currently reported thermoelectric ***,we present a multifunctional,wearable,and wireless sensing system based on a thermoelectric knitted fabric with over 600 mm·s^(-1)air permeability and a stretchability of 120%.The device coupled with a wireless transmission system realizes self-powered monitoring of human respiration through an mobile phone application(APP).Furthermore,an integrated thermoelectric system was designed to combine photothermal conversion and passive radiative cooling,enabling the characteristics of being powered by solar-driven in-plane temperature differences and monitoring outdoor sunlight intensity through the ***,we decoupled the complex signals of resistance and thermal voltage during deformation under solar irradiation based on the anisotropy of the knitted fabrics to enable the device to monitor and optimize the outdoor physical activity of the athlete via the *** novel thermoelectric fabricbased wearable and wireless sensing platform has promising applications in next-generation smart textiles.

关键词： Thermoelectric fabrics Wearable device Wireless Multifunctional sensing system Outdoor wearable signal monitoring

Construction of voxel-based Portunus haanii phantom and its absorbed fractions and specific absorbed fractions calculation based on Monte Carlo simulations

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Radiation Medicine and Protection 2023年第3期4卷 159-164页

作者： Yaqin Zhang Chunhui Gong Chang Guo Peng Wang Wenjun Wang Pengtao Cao Qiang Li Yi Yang School of Environmental and Biological Engineering Nanjing University of Science and TechnologyNanjing 210094China Department of Radiation Oncology Jiangsu Cancer HospitalJiangsu Institute of Cancer ResearchAffiliated Cancer Hospital of Nanjing Medical UniversityNanjing 210009China Lianyungang Radiation Environment Monitoring and Management Station Lianyungang 222047China

Objective:To build the database of the absorbed fractions(AFs)and specific absorbed fractions(SAFs),in order to accurately assess the internal radiation dose in non-human ***:A voxel-based Portunus haanii phantom was established based on the computed tomography(CT)images.A set of AFs and SAFs were calculated with Monte Carlo toolkit Geant4 for the emission of monoenergetic photons and electrons with energies ranging from 10 keV to 5 ***:The mass of the voxel-based Portunus haanii phantom(392.2 g)was in agreement with the actual mass(389.2 g),indicating the reliability of the *** calculated AFs and SAFs,based on the voxel-based Portunus haanii phantom,provided precise and reliable data for conducting internal radiation dose calculations specifically tailored to the Chinese Red Swimming Crab(Portunus haanii).The results indicated that the self-AFs and self-SAFs were affected by both the radiation energy and the mass of the source/target ***,the AFs and SAFs for cross irradiation,were not only dependent on the energy and the mass of the target organ,but also on the relative position of the source and target ***:These results serve as a valuable resource for accurately evaluating the internal radiation exposure of this species.

关键词： Voxel-based phantom Absorbed fractions Specific absorbed fractions

Dynamic recrystallization behavior of Fe–20Cr–30Ni–0.6Nb–2Al–Mo alloy

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Rare Metals 2019年第2期38卷 181-188页

作者： Rui Luo Qi Zheng Jing-Jing Zhu Shun Guo Dong-Sheng Li Gui-Fang Xu Xiao-Nong Cheng School of Materials Science and Engineering Jiangsu University

Single-pass compression tests of an aluminaforming austenite(AFA) alloy(Fe–20Cr–30Ni–0.6Nb–2Al–Mo) were performed using a Gleeble-3500 thermal–mechanical simulator. By combining techniques of electron back-scattered diffraction(EBSD) and transmission electron microscopy(TEM), the dynamic recrystallization(DRX) behavior of the alloy at temperatures of 950–1100 ℃ and strain rates of 0.01–1.00 s^(-1) was investigated. The regression method was adopted to determine the thermal deformation activation energy and apparent stress index and to construct a thermal deformation constitutive model. Results reveal that the flow stress is strongly dependent on temperature and strain rate and it increases with temperature decreasing and strain rate increasing. The DRX phenomenon occurs more easily at comparably higher deformation temperatures and lower strain rates. Based on the method for solving the inflection point via cubic polynomial fitting of strain hardening rate(h) versus strain(e) curves, the ratio of critical strain(ec) to peak strain(ep) during DRX was precisely predicted. The nucleation mechanisms of DRX during thermal deformation mainly include the strain-induced grain boundary(GB)migration, grain fragmentation, and subgrain coalescence.

关键词： Alumina-forming austenitic alloy Constitutivemodel Dynamic recrystallization Critical strain Straininduced grain boundary migration

Stress distribution and surrounding rock control of mining near to the overlying coal pillar in the working face

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International Journal of Mining Science and Technology 2019年第6期29卷 881-887页

作者： Rui Gao Bin Yu Xiangbin Meng Key Laboratory of Deep Coal Resource Mining School of MinesMinistry of Education of ChinaChina University of Mining&TechnologyXuzhou 221116China Datong Coal Mine Group Co.Ltd. Datong 037000China

The occurrence of overlying coal pillar(OCP)exerts a strong effect on the stress and strain distribution of the surrounding rock in the *** this paper,the stress distribution characteristics are analyzed via the numerical calculation with the account of OCP presence or *** addition,this study revealed the joint effect of side pressure relief area of the goaf and stress concentration in OCP on the final stress ***,the rules of abutment stress distribution affected by three influencing factors,namely horizontal-vertical distances between OCP and working face and buried depth of OCP,are *** functional model linking the peak stress of surrounding rock with the above influencing factors is *** field application of the above results proved that the rib spalling and deformation of a 2.95 m-high and 5.66 m-wide roadway could be efficiently controlled by rationally adjusting working states of the support,and adopting the hydraulic prop coordinated with the p type metal beam and anchor cable to strengthen the surrounding rock of working face and roadway,*** proposed measures are considered appropriate to satisfy the safe operation requirements.

关键词： Overlying coal pillar(OCP) Stress distribution Influencing factors Surrounding rock control

Dorroh extensions of algebras and coalgebras

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Frontiers of Mathematics in China 2021年第3期16卷 857-888页

作者： Lan YOU Huixiang CHEN School of Mathematical Science Yangzhou UniversityYangzhou225002China School of Mathematics and Physics Yancheng Institute of TechnologyYancheng224051China

We study Dorroh extensions of algebras and Dorroh extensions of *** structures are *** properties of these extensions are *** also introduce the finite duals of algebras and modules which are not necessarily *** these... 详细信息

关键词： Dorroh extension of algebra Dorroh extension of coalgebra Dorroh pair of coalgebras finite dual

Preparation, Characterization and Catalytic Performance of La-SO_4^(2-)/SBA-15 in Esterification of Acetic Acid with n-Butanol

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Chemical research in Chinese Universities 2008年第3期24卷 357-361页

作者： TIAN Zhi-ming DENG Qi-gang SUN Hui ZHAO De-feng State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116012 P. R. China College of Chemistry and Chemical Engineering of Qiqihar University Qiqihar 161006 P. R. China

La-SO42-/SBA-15 was synthesized with various amounts of lanthanum via incipient-wetness impregnation. Characterization was done by X-ray diffraction（XRD）, transmission electron micrographs（TEM）, nitrogen adsorption, FTIR spectroscopic analysis, thermogravimetric analysis, and the total amount of acidity of catalyst was estimated by TPD of NH3. The results indicate that lanthanum has been incorporated into SBA-15 molecular sieve. The prepared materials（La-SO42-/SBA-15） keep the highly ordered mesoporous two-dimensional hexagonal structure and do not change the mesoporous channel structure of the support SBA-15. The catalyst showed best catalytic activity in the synthesis of n-butyl acetate. The optimum conditions of the esterification by orthogonal experiments were studied： the molar ratio of n-butanol to acetic acid 1：1.2, the amount of catalyst 7.5%, reaction time 80 min. The yield of n-butyl acetate could reach 93.2% under the optimum conditions. The catalyst was recyclable, cost effective and environmental friendly.

关键词： SBA-15 molecular sieve La-SO462-/SBA-15 Catalysis n-Butyl acetate Esterification