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作者： Wang Zhinan Luo Yinsheng Yang Sujun Hua Shihai Chen Demin Marine Design & Research Institute of China Beijing Beetech Corp. Science and Technology on Water Jet Propulsion Laboratory Shanghai Key Laboratory of Ship Engineering

For the problems of the complicated installation and removal of dynamometer card detection equipment,high cost,not convenient for real-time detection,prone to failure and maintenance workload,a kind of low cost wireless dynamometer is *** the implement of wireless transmission gateway,comprehensive monitoring software is *** system consists of a pumping dynamometer,gateway,monitoring software and indicator diagram measuring ***,the wireless dynamometer was installed at RenQiu oil field,and the data shows that the system works well and can be used for the long-term working and operating state of pumping oil field monitoring.

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Observation of 2D Weyl Fermion States in Epitaxial Bismuthene

arXiv

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arXiv 2023年

作者： Lu, Qiangsheng Reddy, P.V. Sreenivasa Jeon, Hoyeon Mazza, Alessandro R. Brahlek, Matthew Wu, Weikang Yang, Shengyuan A. Cook, Jacob Conner, Clayton Zhang, Xiaoqian Chakraborty, Amarnath Yao, Yueh-Ting Tien, Hung-Ju Tseng, Chun-Han Yang, Po-Yuan Lien, Shang-Wei Lin, Hsin Chiang, Tai-Chang Vignale, Giovanni Li, An-Ping Chang, Tay-Rong Moore, Rob G. Bian, Guang Department of Physics and Astronomy University of Missouri ColumbiaMO65211 United States Materials Science and Technology Division Oak Ridge National Laboratory Oak RidgeTN37831 United States Department of Physics National Cheng Kung University Tainan701 Taiwan Center for Nanophase Materials Sciences Oak Ridge National Laboratory Oak RidgeTN37831 United States Center for Integrated Nanotechnologies Los Alamos National Laboratory Los AlamosNM87123 United States Research Laboratory for Quantum Materials Singapore University of Technology and Design Singapore487372 Singapore Institute of Physics Academia Sinica Taipei11529 Taiwan Department of Physics University of Illinois at Urbana-Champaign 1110 West Green Street UrbanaIL61801-3080 United States Frederick Seitz Materials Research Laboratory University of Illinois at Urbana-Champaign 104 South Goodwin Avenue UrbanaIL61801-2902 United States Tainan70101 Taiwan Physics Division National Center for Theoretical Sciences Taipei10617 Taiwan

A two-dimensional (2D) Weyl semimetal featuring a spin-polarized linear band dispersion and a nodal Fermi surface is a new topological phase of matter. It is a solid-state realization of Weyl fermions in an intrinsic 2D system. The nontrivial topology of 2D Weyl cones guarantees the existence of a new form of topologically protected boundary states, Fermi string edge states. In this work, we report the realization of a 2D Weyl semimetal in monolayer-thick epitaxial bismuthene grown on SnS(Se) substrate. The intrinsic band gap of bismuthene is eliminated by the space-inversion-symmetry-breaking substrate perturbations, resulting in a gapless spin-polarized Weyl band dispersion. The linear dispersion and spin polarization of the Weyl fermion states are observed in our spin and angle-resolved photoemission measurements. In addition, the scanning tunneling microscopy/spectroscopy reveals pronounced local density of states at the edge, suggesting the existence of Fermi string edge states. These results open the door for the experimental exploration of the exotic properties of Weyl fermion states in reduced dimensions. © 2023, CC BY-NC-ND.

关键词： Spin polarization

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Cellular damage triggers mechano-chemical control of cell wall dynamics and patterned cell divisions in plant healing

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Developmental Cell 2025年第10期60卷 1411-1422.e6页

作者： Di Fino, Luciano Martín Anjam, Muhammad Shahzad Besten, Maarten Mentzelopoulou, Andriani Papadakis, Vassilis Zahid, Nageena Baez, Luis Alonso Trozzi, Nicola Majda, Mateusz Ma, Xuemin Hamann, Thorsten Sprakel, Joris Moschou, Panagiotis N. Smith, Richard S. Marhavý, Peter Umeå Plant Science Centre (UPSC) Department of Forest Genetics and Plant Physiology Swedish University of Agricultural Sciences Umeå 901 83 Sweden Laboratory of Biochemistry Wageningen University and Research Stippeneng 4 Wageningen 6708 WE Netherlands Department of Biology University of Crete Heraklion Greece Department of Industrial Design and Production Engineering University of West Attica Athens 12244 Greece Institute of Molecular Biology and Biotechnology Foundation for Research and Technology-Hellas Heraklion Greece Institute for Biology Faculty of Natural Sciences Norwegian University of Science and Technology 5 Høgskoleringen Trondheim 7491 Norway Department of Computational and Systems Biology John Innes Centre Norwich NR4 7UH United Kingdom Department of Molecular Sciences Uppsala BioCenter Swedish University of Agricultural Sciences and Linnean Center for Plant Biology Uppsala Sweden

Reactivation of cell division is crucial for the regeneration of damaged tissues, which is a fundamental process across all multicellular organisms. However, the mechanisms underlying the activation of cell division in plants during regeneration remain poorly understood. Here, we show that single-cell endodermal ablation generates a transient change in the local mechanical pressure on neighboring pericycle cells to activate patterned cell division that is crucial for tissue regeneration in Arabidopsis roots. Moreover, we provide strong evidence that this process relies on the phytohormone ethylene. Thus, our results highlight a previously unrecognized role of mechano-chemical control in patterned cell division during regeneration in plants. © 2024 The Authors

关键词： cell division cell wall ethylene mechanobiology pectin regeneration single-cell laser ablation xylem-pole-pericycle

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A Service-Environment-Oriented Shape Reconstruction Method of Vehicle-borne Active Phased Array Antenna

A Service-Environment-Oriented Shape Reconstruction Method o...

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IEEE International Conference on Radar

作者： Pengying Xu Xiaoxian Xu Yan Wang Yucheng Teng Congsi Wang Dongming Ge Mingkui Kang Shuai Yuan Xuezi Wang Key Laboratory of Electronic Equipment Structure Design Ministry of Education Xidian University Xi'an China School of Information and Control Engineering Xi'an University of Architecture and Technology Xi'an China Beijing Institute of Spacecraft System Engineering Beijing China No.771 Institute of China Aerospace Science and Technology Corporation Xi'an China China Electronics Technology Group Corporation No.38 Research Institute Hefei China

ISBN: (纸本)9781665468893

Modern electronic equipment has been moving towards large scale and increased complexity. Affected by such factors as complex working environments, the performance of a large number of structures in engineering is degraded or even destroyed. Therefore, structure shape estimation is of great significance. The complexity of the structure, however, makes it impossible for a single deformation evaluation algorithm to evaluate the structure comprehensively and accurately. In this paper, a modal-approximate curve (M-AC) method, using a small amount of strain data, is proposed for block shape estimation of structures. Three typical wind load experiments are carried out on the finite element model (FEM) of the vehicle-borne active phased array antenna, and the effectiveness of the algorithm is verified. Under the wind speed of 28 (m/s), the deformation of antenna front is 104.70 mm and the estimation accuracy of the M-AC method is 87.43%, which is 16.47% higher than that of the modal approach. The results indicate that the estimated displacement is consistent well with the simulation results of the finite element method.

关键词： Phased arrays Shape Estimation Radar Radar antennas Finite element analysis Loaded antennas

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Improved genetic distance-based spatial deployment can effectively minimize inbreeding in seed orchard

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Forest Ecosystems 2020年第1期7卷 117-124,126,125,127页

作者： Boning Yang Haihong Sun Jiandong Qi Shihui Niu Yousry AEl-Kassaby Wei Li Beijing Advanced Innovation Center for Tree Breeding by Molecular Design National Engineering Laboratory for Forest Tree BreedingCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijing 100083China Liaoning Research Institute of Sandy Land Control and Utilization Xihe DistrictFuxin City 123000Liaoning ProvinceChina College of Information Science and Technology Beijing Forestry UniversityBeijing 100083China Department of Forest and Conservation Sciences Faculty of ForestryThe University of British Columbia2424 Main MallVancouverBritish Columbia V6T 1Z4Canada

Background:Inbreeding in seed orchards is expected to increase with the advancement of breeding cycles,which results in the delivery of crops with suboptimal genetic gain,reduced genetic diversity,and lower seed ***,a genetic distance-dependent method for clonal spatial deployment in seed orchards was developed and demonstrated,which reduced the inbreeding *** method’s main evaluation parameter of inbreeding is the genetic distance among individuals and the deployment method used an improved adaptive parallel genetic algorithm(IAPGA)based on Python *** inbreeding-prone Chinese Mongolian pine breeding population material originating from a single natural population,the proposed method was compared to a traditional orchard design and a distance-based design;namely,complete randomized block(RCB)and optimum neighborhood(ONA)designs,***:With the advancement of selective breeding cycles,group separation among orchard related individuals is expected to *** on the genetic distance among individuals,the IAPGA design was superior in significantly reducing the inbreeding level as compared to the two existing designs,confirming its suitability to advanced-generation orchards where relatedness among parents is *** the 1st,2nd,and mixed generations clonal deployment schemes,the IAPGA design produced lower inbreeding with 87.22%,81.49%,and 87.23%of RCB,and 92.78%,91.30%,and 91.67%of ONA designs,***:The IAPGA clonal deployment proposed in this study has the obvious advantage of controlling inbreeding,and it is expected to be used in clonal deployment in seed orchards on a *** studies are needed to focus on the actual states of pollen dispersal and mating in seed orchards,and more assumptions should be taken into account for the optimized deployment method.

关键词： Seed orchard Deployment Inbreeding Genetic distance Clone SSR

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On-chip integrated 0.4 GHz & 2.3 GHz Lamb wave resonators: Electrode structure optimization and flip-transfer fabrication

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Microelectronics Journal 2025年 162卷

作者： Jicong Zhao Qiner Xu Shitao Lv Wenhao Ye Qiang Xu Yi Cao Haiyan Sun Jing Huang School of Microelectronics and Integrated Circuits (Jiangsu Key Laboratory of Semi. Dev. & IC Design Package and Test) Nantong University Nantong 226019 PR China School of Information Science and Technology Nantong University Nantong Jiangsu 226019 PR China

—Lamb wave resonators show great potential for applications in RF filters, infrared detectors, and sensors. Converting the bottom electrode into an interdigitated-transducer (IDT) structure allows broader application. However, the piezoelectric film deposited atop patterned IDTs often suffers from poor quality and cracking, degrading or damaging resonator performance. This study presents a wafer-level flip-transfer method which flips the pre-defined piezoelectric vibration and cavity structures onto another wafer. This reversed the sequence of bottom electrode patterning and piezoelectric film deposition, avoiding the problem above. Utilizing this process, Lamb wave resonators operating at 0.4 GHz and 2.3 GHz with both IDT-IDT and IDT-Floating configurations were integrated on an 8-inch wafer. Furthermore, electrode parameters were optimized to enable the multi-mode coupling and suppress spurious signals. Test results indicate that, with 9.5 % Sc doping, Lamb wave resonators operating in the 0.4 GHz and 2.3 GHz bands achieved effective electromechanical coupling coefficients ( k t 2 ) of 2.87 % and 6.24 %, and quality factors ( Q ) of 2547 and 1332, respectively.

关键词： Piezoelectric transducers

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Comparative study on thermal cracking characteristics and bio-oil production from different microalgae using Py-GC/MS

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International Journal of Agricultural and Biological Engineering 2019年第1期12卷 208-213页

作者： Gang Li Fang Ji Xue Bai Yuguang Zhou Renjie Dong Zhigang Huang College of Materials and Mechanical Engineering Beijing Technology and Business UniversityBeijing 100048China Chinese Academy of Agricultural Engineering Planning and Design Beijing 100125China Bioenergy and Environment Science&Technology Laboratory College of EngineeringChina Agricultural UniversityBeijing 100083China Key Laboratory of Clean Production and Utilization of Renewable Energy Ministry of AgricultureChinaBeijing 100083China National Center for International Research of BioEnergy Science and Technology Ministry of Science and TechnologyBeijing 100083China Yantai Institute China Agricultural UniversityYantai 264670China

The yield and chemical composition of pyrolysis products of Chlorella pyrenoidosa and Schizochytrium limacinum were determined using thermogravimetric analyzer(TGA)and pyrolysis-gas chromatographic mass spectrometry(Py-GC/MS)by varying the temperature *** further analysis of the total ion current(TIC)diagrams of Chlorella pyrenoidosa and Schizochytrium limacinum,it was concluded that both the pyrolysis products of each sample were mainly comprised of hydrocarbons,aromatics,fatty acids,nitrogen compounds,PAHs,phenols,etc,however,the relative content of each compound from Chlorella pyrenoidosa and Schizochytrium limacinum was *** pyrolysis of Chlorella pyrenoidosa and Schizochytrium limacinum at 350℃ produced a maximum yield of bio-oil production(44.32%and 60.99%);moreover,Chlorella pyrenoidosa could lead to more pollutants(nitrogen compounds and PAHs)release(2.71%)compared to that of Schizochytrium limacinum(0.7%).Considering the reasonable bio-oil production and minimum release of pollutants,Schizochytrium limacinum was found to be superior for producing biofuel against Chlorella pyrenoidosa.

关键词： microalgae Chlorella pyrenoidosa Schizochytrium limacinum bio-oil production thermal cracking Py-GC-MS

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DNA logic circuits based on FokI enzyme regulation

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New Journal of Chemistry 2020年第5期44卷 1931-1941页

作者： Sue Zhao Yuan Liu Bin Wang Changjun Zhou Qiang Zhang Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education School of Software Engineering Dalian University Dalian 116622 China School of Computer Science and Technology Dalian University of Technology Dalian 116024 China College of Computer Science and Engineering Dalian Minzu University Dalian China

In biomolecular programming, researchers have attempted to use DNA molecules as a new kind of highly reliable raw material, due to the high predictability and good programmability of DNA molecules, and construct DNA circuits that can realize logical calculation. In DNA circuits with a multi-step cascade, autonomy, and complex behavior, it is very important to be able to controllably activate and regulate toeholds. Therefore, we propose a strategy using an enzyme-assisted cleavage regulation system to solve the above problems. In this strategy, the DNA input strand regulates the recognition domain of FokI and initiates the activity of FokI due to the reconfiguration of programmable information. In addition, FokI induced conformational changes regulate the toehold-mediated strand displacement reaction, which optimizes the complex function and the signal transmission of logic circuits. In order to prove the feasibility of this strategy, we constructed a series of logic gates (YES, AND, and INHIBIT), and on this basis, we successfully implemented both a demultiplexer circuit and a multiplexer cascade circuit. The proposed enzyme-assisted cleavage regulation strategy provides a new approach for constructing more complex molecular computing systems, with applications in biosensors and medical detection systems.

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Discovery of a Proteolysis-Targeting Chimera Degrader of JAK2 as a Potential Therapeutic Agent for JAK2-Mediated Myeloproliferative Neoplasms

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Journal of medicinal chemistry 2025年第11期68卷 2025 Jun 3页

作者： Caolin Wang Ziqi Chen Siyu Wang Jie Wang Panpan Yu Chulu Huang Yunpeng Wu Zhenjiang Zhao Wenyi Mei Honglin Li Lili Zhu Shanghai Key Laboratory of New Drug Design School of Pharmacy East China University of Science and Technology Shanghai 200237 China. Lingang Laboratory Shanghai 200031 China. Innovation Center for AI and Drug Discovery School of Pharmacy East China Normal University Shanghai 200062 China.

JAK2 is a promising target for treating myeloproliferative neoplasms (MPNs). However, existing JAK2 inhibitors cannot fully cure these diseases and may induce resistance with prolonged use. Here, we report the design, synthesis, and biological evaluation of a series of highly potent JAK2 degraders based on our previously developed inhibitor WWQ-131. The optimal compound demonstrates a high degradation rate (DR) against JAK2 in SET-2 cells carrying the JAK2 V617F mutation, achieving a DR of 91.32% at 5 μM and a DC of 27.35 ± 5.36 nM. Moreover, exhibits more potent antiproliferative activity against SET-2 cells than fedratinib and its parent inhibitor WWQ-131. Mechanistic studies reveal that degrades JAK2 through the ubiquitin-protease pathway. Importantly, suppresses rhEPO-mediated polycythemia and splenomegaly in mice by degrading JAK2 and interfering with the JAK2-STAT signaling pathway. Taken together, the results of this study reveal a promising JAK2 PROTAC degrader for the treatment of MPNs.

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Simultaneous Single-Shot Two-Dimensional Imaging of Nanoparticles and Radicals in Turbulent Reactive Flows

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Physical Review Applied 2020年第4期13卷 044002-044002页

作者： Yihua Ren Yiyang Zhang Shuiqing Li Key Laboratory for Thermal Science and Power Engineering of Ministry of Education Department of Energy and Power Engineering Tsinghua University Beijing 100084 China Institute for Combustion Technology RWTH Aachen University Templergraben 64 Aachen 52056 Germany Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Collaborative Innovation Center of Advanced Nuclear Energy Technology Institute of Nuclear and New Energy Technology Tsinghua University Beijing 100084 China

Recently, a phase-selective laser-induced breakdown spectroscopy (PS-LIBS) technique has been proposed and developed to diagnose nanoparticles. However, only a few kinds of nanoparticles can generate sufficient strong PS-LIBS signals for single-shot two-dimensional measurement. In this work, we report on the development and validation of a resonance-enhanced PS-LIBS for instantaneous two-dimensional imaging of nanoparticle formation and transport in a turbulent reactive flow. By matching the laser pulse with the absorption line of titanium atoms in the laser-induced nanoplasma, we find that the resonance-enhanced titanium atomic emissions are 1 order of magnitude stronger than the nonresonant spectra ranging from 498 to 502 nm. Based on the spectral characterization, a quantitative relation between the spectra and the particle volume fraction is theoretically established and validated by experiments. Combining the resonance-enhanced PS-LIBS and planar laser-induced fluorescence (PLIF) techniques, instantaneous two-dimensional distributions of the nanoparticle and the hydroxyl radical (OH radical) can be measured in situ in a turbulent reactive flow. The simultaneous measurement demonstrates a strong correlation between the nanoparticle formation and the reactive flow pattern in the turbulent region. The correlation further reveals that the precursor consumption is dominated by the turbulence effect, indicating the precursor chemistry-turbulence coupling.

关键词： Analytical chemistry Atomic spectra Imaging & optical processing Metrology Plasma production & heating by laser beams, laser-foil, laser-cluster Reacting flows Turbulent mixing Nanoparticles

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