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Efficient and stable perovskite solar cells by build-inπ-columns and ionic interfaces in covalent organic frameworks

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Nano Research 2023年第7期16卷 9387-9397页

作者： Riming Nie Xiaokai Chen Zhongping Li Weicun Chu Si Ma Changqing Li Xiaoming Liu Yonghua Chen Zhuhua Zhang Wanlin Guo State Key Laboratory of Mechanics and Control of Mechanical Structures Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of EducationInstitute for Frontier ScienceNanjing University of Aeronautics and AstronauticsNanjing 210016China Department of Chemical and Biomolecular Engineering Yonsei University50 Yonsei-roSeodaemun-guSeoul 120-749Republic of Korea College of Chemistry Jilin UniversityChangchun 130012China Department of Energy and Chemical Engineering Ulsan National Institute of Science and Technology(UNIST)50 UNIST-gilEonyang-eupUljugunUlsan 44919Republic of Korea Key Laboratory of Flexible Electronics(KLoFE) School of Flexible Electronics(Future Technologies)&Institute of Advanced Materials(IAM)Nanjing Tech University(Nanjing Tech)Nanjing 211816China

Perovskite solar cells(PSCs)have attracted much attention due to their rapidly increased power conversion efficiencies,however,their inherent poor long-term stability hinders their *** degradation of PSCs first comes from the degradation of hole transport materials(HTMs).Here,we report the construction of periodicπ-columnar arrays and ionic interfaces over the skeletons by introducing cationic covalent organic frameworks(C-COFs)to the ***π-columnar arrays can optimize the charge transport ability and energy levels of the hole transport layer and suppress the degradation of HTM,and ionic interfaces over the skeletons can produce stronger electric dipole and electrostatic interactions,as well as higher charge *** C-COFs were designed and synthesized via Schiff base reaction by using 1,3,5-triformylphloroglucinol as a neutral knot and dimidium bromide as cationic *** neutral COFs(N-COFs)were also synthesized as a reference by using 3,8-diamino-6-phenylphenanthridine as neutral *** with cationic COF exhibit the highest efficiency of 23.4%with excellent humidity and thermal *** the best of our knowledge,this is the highest efficiency among the meso-structured PSCs fabricated by a sequential process.

关键词： cationic covalent organic framework(C-COF) π-columnar arrays ionic interfaces charge density perovskite solar cells

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Mechanism of iron on the intestinal epithelium development in suckling piglets

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Science China(Life Sciences) 2023年第9期66卷 2070-2085页

作者： Lanmei Yin Yitong Zhang Jun Li Jing Zhou Qiye Wang Jing Huang Jianzhong Li Huansheng Yang Hunan International Joint Laboratory of Animal Intestinal Ecology and Health Laboratory of Animal Nutrition and Human HealthCollege of Life SciencesHunan Normal UniversityChangsha 410081China Key Laboratory of Agro-ecological Processes in Subtropical Region Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic ProcessNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China Tianjin Institute of Industrial Biotechnology Chinese Academy of SciencesTianjin 300308China State Key Laboratory of Food Safety Technology for Meat Products Yinxiang GroupFujian Aonong BiologicaI Science and Technology Group Co.Ltd.Key Laboratory of Swine Nutrition and Feed Science of Fujian ProvinceZhangzhou 363000China

This study aimed to investigate the mechanism of iron on intestinal epithelium development of suckling piglets. Compared with newborn piglets, 7-day-old and 21-day-old piglets showed changes in the morphology of the jejunum, increased proliferation,differentiated epithelial cells, and expanded enteroids. Intestinal epithelium maturation markers and iron metabolism genes were significantly changed. These results suggest that lactation is a critical stage in intestinal epithelial development, accompanied by changes in iron metabolism. In addition, deferoxamine(DFO) treatment inhibited the activity of intestinal organoids at passage 4(P4) of 0-day-old piglets, but no significant difference was observed in epithelial maturation markers at passage 1(P1) and P4,and only argininosuccinate synthetase 1(Ass1) and β-galactosidase(Gleb) were up-regulated at passage 7(P7). These results in vitro show that iron deficiency may not directly affect intestinal epithelium development through intestinal stem cells(ISCs). The iron supplementation significantly down-regulated the m RNA expression of interleukin-22 receptor subunit alpha-2(IL-22RA2)in the jejunum of piglets. Furthermore, the m RNA expression of IL-22 in 7-day-old piglets was significantly higher than that in0-day-old piglets. Adult epithelial markers were significantly up-regulated in organoids treated with recombinant murine cytokine IL-22. Thus, IL-22 may play a key role in iron-affecting intestinal epithelium development.

关键词： iron suckling piglets intestinal epithelium development interleukin-22

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Accurate monitoring of machining process of Ti-6Al-4V using deep multi-task learning

Accurate monitoring of machining process of Ti-6Al-4V using ...

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2024 International Conference on advanced Mechatronic Systems, ICAMechS 2024

作者： Park, Soyeon Yang, Sang Min Kim, Gyeongho Kim, Dong Min Lee, Hoon Hee Choi, Jae Gyeong Jeon, Sujin Lim, Sunghoon Park, Hyung Wook Unist Department of Industrial Engineering Ulsan44949 Korea Republic of Unist Department of Mechanical Engineering Ulsan44949 Korea Republic of Tech University of Korea Department of Mechanical Design Engineering Siheung15073 Korea Republic of Kitech Extreme Process Control Group Jinju52845 Korea Republic of Industry Intelligentization Institute Unist Graduate School of Artificial Intelligence Department of Industrial Engineering Ulsan44949 Korea Republic of Ulsan National Institute of Science and Technology Department of Industrial Engineering Department of Mechanical Engineering Ulsan44949 Korea Republic of Unist Department of Mechanical Engineering Ulsan44919 Korea Republic of

ISBN: (纸本)9798350366204

Accurate machining process monitoring (MPM) is crucial to ensure manufacturing process stability and efficiency. In particular, tool wear, surface roughness, and cutting force comprise primary elements of MPM, which are physically interconnected and significantly affect machining quality and productivity. Hence, MPM should be performed through comprehensive consideration of the primary elements and their interactions. Yet, there is a lack of a unified approach to MPM that holistically predicts, which limits the practical applicability of MPM in real-world machining processes. Therefore, this work proposes a novel deep multi-task learning (MTL)-based method that integrates primary MPM elements by simultaneously predicting tool wear, surface roughness, and cutting force. To this end, the proposed method develops a probabilistic multitask likelihood that considers task uncertainty for seamless end-to-end training. The proposed method's efficacy in MPM is validated with real-world datasets from an end-milling process of Ti-6Al-4V. The comprehensive experimental results demonstrate that the proposed method consistently shows superior prediction performance compared to existing single-task and MTL methods, indicating its effectiveness in real-world MPM. © 2024 IEEE.

关键词： Multi-task learning

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Demand Response Optimization for the Enhancement of the Distribution System's Operation

Demand Response Optimization for the Enhancement of the Dist...

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International Conference on Smart Energy Systems and technologies (SEST)

作者： Maria Fotopoulou George Tsekouras Dimitrios Rakopoulos Vassiliki Kontargyri Department of Electrical and Electronics Engineering University of West Attica Athens Greece Chemical Process and Energy Resources Institute Centre for Research and Technology Hellas Athens Greece Control Systems and Industrial Automation Laboratory National and Kapodistrian University of Athens Athens Greece

ISBN: (数字)9798350386493

ISBN: (纸本)9798350386509

Following the latest energy market trends, active distribution systems incorporate an ascending mix of flexible loads, which can participate in Demand Response (DR) strategies. The purpose of this research paper is to present a DR strategy for the Distribution System Operator (DSO) in order to enhance the system's operation and mitigate power quality issues, such as voltage drops, and congestion. The proposed algorithm aims at smoothing the load curve, taking into consideration the available flexible load and the limitations of the system. The algorithm is demonstrated on a model of the distribution system of Skiathos island, Greece, in the context of ENFLATE, a Horizon Europe project, and future scenarios with photovoltaic (PV) penetration are studied as well. According to the results, the proposed DR algorithm manages to reduce the voltage drop, eliminate the number of events where the voltage drop exceeds the limits and reduce the losses of the distribution system up to 8%-9%, depending on the PV penetration.

关键词： Electric potential Smoothing methods Power quality Europe Voltage Artificial neural networks Transformers Demand response Load modeling Context modeling

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Atomic magnetometer with microfabricated vapor cells based on coherent population trapping

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Chinese Physics B 2021年第3期30卷 215-219页

作者： Xiaojie Li Yue Shi Hongbo Xue Yong Ruan Yanying Feng State Key Laboratory of Precision Measurement Technology and Instrument Tsinghua UniversityBeijing 100084China Key Laboratory of Photonic Control Technology(Ministry of Education) Tsinghua UniversityBeijing 100084China Department of Precision Instrument Tsinghua UniversityBeijing 100084China State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China MEMS Institute of Zibo National High-tech Industrial Development Zone Zibo 255086China

An atomic magnetometer based on coherent population trapping(CPT) resonances in microfabricated vapor cells is demonstrated. Fabricated by the micro-electro-mechanical-system(MEMS) technology, the cells are filled with Rb and Ne at a controlled pressure. An experimental apparatus is built for characterizing properties of microfabricated vapor cells via the CPT effects. The typical CPT linewidth is measured to be about 3 k Hz(1.46 k Hz with approximately zero laser intensity) for the rubidium D1 line at about 90℃. The effects of pressure, temperature and laser intensity on CPT linewidth are studied experimentally. A closed-loop atomic magnetometer is finally finished with a sensitivity of 210.5 p T/Hz1/2 at 1 Hz bandwidth. This work paves the way for developing an integrated chip-scale atomic magnetometer in the future.

关键词： atomic magnetometer MEMS vapor cell coherent population trapping

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Simultaneous hydrogen production with photo reforming of lactic acid over MXene derived MoS_(2)/TiO_(2)/Ti_(3)C_(2)nanowires

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Chinese Journal of Catalysis 2025年第4期71卷 234-245页

作者： Seemal Mansoor Zixu Hu Yuxin Zhang Muhammad Tayyab Mazhar Khan Zeeshan Akmal Liang Zhou Juying Lei Muhammad Nasir Jinlong Zhang Key Laboratory for Advanced Materials Shanghai Engineering Research Center for Multi–media Environmental Catalysis and Resource UtilizationJoint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Molecular EngineeringEast China University of Science&TechnologyShanghai 200237China National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical ProcessEast China University of Science and TechnologyShanghai 200237China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150090HeilongjiangChina Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Institute of Materials Research Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055GuangdongChina COMSATS Univ Islamabad Interdisciplinary Res Ctr Biomed Mat IRCBMLahore CampusLahore 54000Pakistan

Developing efficient photocatalysts to address collaborative energy and environmental crises still faces significant *** this report,we present a highly efficient MXene–based photocatalyst,which is combined with MoS_(2)nano patches and TiO_(2)/Ti_(3)C_(2)(TTC)nanowires through hydrothermal *** all the composites tested,the optimized photocatalyst gave a remarkable H_(2)and revolving polylactic acid(PLA)into pyruvic acid(PA).Achieving a remarkable H_(2)evolution rate of 637.1 and 243.2μmol g^(−1)h^(−1),in the presence of TEOA and PLA as a sacrificial reagent under UV-vis(λ≥365 nm)light *** improved photocatalytic activity is a result of the combination of dual cocatalyst on the surface of TTC photocatalyst,which create an ideal synergistic effect for the generation of PA and the production of H_(2)*** MoS_(2)TiO_(2)/Ti_(3)C_(2)(MTT)composite can generate more photoexcited charge carriers,leading to the generation of more active radicals,which may enhance the system's photocatalytic *** work aims at demonstrating its future significance and guide the scientific community towards a more efficient approach to commercializing H_(2)through photocatalysis.

关键词： Photo reforming Polylactic acid Hydrogen evolution Lactic acid Pyruvic acid

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Improved LMI-based conditions for designing of PD-type ILC laws for linear batch processes over two-dimensional setting

Improved LMI-based conditions for designing of PD-type ILC l...

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International Conference on control, Automation, Robotics and Vision (ICARCV)

作者： Robert Maniarski Wojciech Paszke Hongfeng Tao Shoulin Hao Institute of Automation Electronic and Electrical Engineering University of Zielona Góra Zielona Góra Poland Key Laboratory of Advanced Process Control for Light Industry of Ministry of Education Jiangnan University Wuxi China Laboratory of Intelligent Control and Optimization for Industrial Equipment of Ministry of Education Dalian University of Technology Dalian China

ISBN: (纸本)9781665476881

This paper considers the problem of designing of iterative learning control (ILC) laws for linear batch processes. Unlike the majority of existing results about ILC law design for linear batch processes over repetitive/two-dimensional setting where Lyapunov theory is applied, this study is focused on formulating the ILC law design procedures by transforming it into an equivalent problem of (structural) stability analysis for a linear Roesser model for two-dimensional (2D) systems. Then, based on a non-conservative version of stability and stabilization conditions for linear 2D systems, suitable PD-type ILC laws are derived by the application of the linear matrix inequality (LMI) approach. Finally, a numerical example is given to show the validity of the proposed design procedure and some advantages are emphasized when compared to the existing alternatives.

关键词： State feedback Uncertainty Two dimensional displays Batch production systems Stability analysis Structural engineering Numerical models

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Engineered Bacillus subtilis alleviates intestinal oxidative injury through Nrf2-Keap1 pathway in enterotoxigenic Escherichia coli(ETEC) K88-infected piglet

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2023年第6期24卷 496-509页

作者： Chaoyue WEN Hong ZHANG Qiuping GUO Yehui DUAN Sisi CHEN Mengmeng HAN Fengna LI Mingliang JIN Yizhen WANG Institute of Feed Science Key Laboratory of Animal Feed and Nutrition of Zhejiang ProvinceKey Laboratory of Molecular Animal NutritionMinistry of EducationKey Laboratory of Animal Nutrition and Feed Science in Eastern ChinaMinistry of AgricultureCollege of Animal SciencesZhejiang UniversityHangzhou 310058China Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process CAS Key Laboratory of Agro-Ecological Processes in Subtropical RegionNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China College of Advanced Agricultural Science University of Chinese Academy of SciencesBejing 100039China

Engineered probiotics can serve as therapeutics based on their ability of produce recombinant immune-stimulating *** this study,we built the recombinant Bacillus subtilis WB800 expressing antimicrobial peptide KR32(WB800-KR32)using genetic engineering methods and investigated its protective effects of nuclear factor-E2-related factor 2(Nrf2)-Kelch-like ECH-associated protein 1(Keap1)pathway activation in intestinal oxidative disturbance induced by enterotoxigenic Escherichia coli(ETEC)K88 in weaned ***-eight weaned piglets were randomly distributed into four treatment groups with seven replicates fed with a basal *** feed of the control group(CON)was infused with normal sterilized saline;meanwhile,the ETEC,ETEC+WB800,and ETEC+WB800-KR32 groups were orally administered normal sterilized saline,5×10^(10)CFU(CFU:colony forming units)WB800,and 5×10^(10)CFU WB800-KR32,respectively,on Days 1-14 and all infused with ETEC K881×10^(10)CFU on Days *** results showed that pretreatment with WB800-KR32 attenuated ETEC-induced intestinal disturbance,improved the mucosal activity of antioxidant enzyme(catalase(CAT),superoxide dismutase(SOD),and glutathione peroxidase(GPx))and decreased the content of malondialdehyde(MDA).More importantly,WB800-KR32 downregulated genes involved in antioxidant defense(GPx and SOD1).Interestingly,WB800-KR32 upregulated the protein expression of Nrf2 and downregulated the protein expression of Keap1 in the ***800-KR32 markedly changed the richness estimators(Ace and Chao)of gut microbiota and increased the abundance of Eubacterium_rectale_ATCC_33656 in the *** results suggested that WB800-KR32 may alleviate ETEC-induced intestinal oxidative injury through the Nrf2-Keap1 pathway,providing a new perspective for WB800-KR32 as potential therapeutics to regulate intestinal oxidative disturbance in ETEC K88 infection.

关键词： Engineered probiotics Intestine Oxidative injury Weaned piglets Nuclear factor-E2-related factor 2(Nrf2)-Kelch-like ECH-associated protein 1(Keap1)pathway

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Accurate monitoring of machining process of Ti-6Al-4V using deep multi-task learning

Accurate monitoring of machining process of Ti-6Al-4V using ...

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International Conference on advanced Mechatronic Systems (ICAMechS)

作者： Soyeon Park Sang Min Yang Gyeongho Kim Dong Min Kim Hoon Hee Lee Jae Gyeong Choi Sujin Jeon Sunghoon Lim Hyung Wook Park Department of Industrial Engineering UNIST Ulsan Republic of Korea Department of Mechanical Engineering UNIST Ulsan Republic of Korea Department of Mechanical Design Engineering Tech University of Korea Siheung Republic of Korea Extreme Process Control Group KITECH Jinju Republic of Korea Department of Industrial Engineering Graduate School of Artificial Intelligence Industry Intelligentization Institute UNIST Ulsan Republic of Korea Department of Industrial Engineering and Department of Mechanical Engineering Ulsan National Institute of Science and Technology Ulsan Republic of Korea

ISBN: (数字)9798350366204

ISBN: (纸本)9798350366211

Accurate machining process monitoring (MPM) is crucial to ensure manufacturing process stability and efficiency. In particular, tool wear, surface roughness, and cutting force comprise primary elements of MPM, which are physically interconnected and significantly affect machining quality and productivity. Hence, MPM should be performed through comprehensive consideration of the primary elements and their interactions. Yet, there is a lack of a unified approach to MPM that holistically predicts, which limits the practical applicability of MPM in real-world machining processes. Therefore, this work proposes a novel deep multi-task learning (MTL)-based method that integrates primary MPM elements by simultaneously predicting tool wear, surface roughness, and cutting force. To this end, the proposed method develops a probabilistic multitask likelihood that considers task uncertainty for seamless end-to-end training. The proposed method’s efficacy in MPM is validated with real-world datasets from an end-milling process of Ti-6Al-4V. The comprehensive experimental results demonstrate that the proposed method consistently shows superior prediction performance compared to existing single-task and MTL methods, indicating its effectiveness in real-world MPM.

关键词： Training Productivity Accuracy Uncertainty Force Machining Multitasking Surface roughness Rough surfaces Surface treatment

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Oxidation to spontaneous combustion of pyrophoric iron sulphides in the process industries: A review

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Journal of Loss Prevention in the process Industries 2023年 85卷

作者： Dou, Zhan Li, Li-Li Liu, Zhe Min, Yi-Meng Guo, Shi-Jie Chen, Liang-Chao Wang, Qian-Lin Li, Jing-Hai Yang, Jian-Feng Zhang, Jian-Wen Jiang, Jun-Cheng Shu, Chi-Min Department of Safety Engineering College of Mechanical and Electrical Engineering Beijing University of Chemical Technology Beijing100029 China Jiangsu Key Laboratory of Hazardous Chemicals Safety and Control College of Safety Science and Engineering Nanjing Tech University Jiangsu Nanjing211816 China Centre for Process Safety and Industrial Disaster Prevention School of Engineering National Yunlin University of Science and Technology Yunlin64002 Taiwan

In the fossil energy industries, pyrophoric iron sulphides (PISs), the most commonly mentioned pyrophoric material, are widely distributed in the exploitation, transportation, storage, refining equipment and piping of oil and natural gas. When equipment and piping are opened for inspection or maintenance, they may be exposed to air and act as an ignition source by undergoing an exothermic reaction. Accordingly, they become hot or incandescent and can ignite nearby inflammable hydrocarbon-air mixtures. Numerous researchers have performed various research into this area. There are four main interests involved in this regard, and they are listed as follows: (1) the physical and chemical properties of PISs, (2) the suitable condition, processes, and mechanism for oxidation to spontaneous combustion of PISs, (3) the spontaneous combustion risk assessment of PISs, and (4) the active/passive prevention technologies and strategies of spontaneous combustion of PISs. Moreover, the main drawbacks existing in past research are also highlighted. Correspondingly, several solutions are put forward in combination with the current research methods, technology development trends, and industrial practice requirements. By the thorough summary, it is expected to lay a foundation and direct further research into the oxidation to spontaneous combustion of PISs, as well as to better enrich the theoretical basis and technical support for the improvement of production safety management levels in the petroleum, natural gas, and coal chemical industry. © 2023 Elsevier Ltd

关键词： Spontaneous combustion

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