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Engineering Reports 2025年第5期7卷

作者： A. Parthiban K. Ananthakumar S. Ajith Arul Daniel S. Sivaganesan T. Sathish Jayant Giri A. Johnson Santhosh Ahmad O. Hourani Department of Mechanical Engineering Vels Institute of Science Technology & Advanced Studies Chennai Tamil Nadu India -Metallurgist Process Engineering Department Motherson Health and Medical Systems Kanchipuram Tamil Nadu India Department of Mechanical Engineering Saveetha School of Engineering SIMATS Chennai Tamil Nadu India Department of Mechanical Engineering Yeshwantrao Chavan College of Engineering Nagpur India Division of Research and Development Lovely Professional University Phagwara India Associate Professor Faculty of Mechanical Engineering Jimma Institute of Technology Jimma University Jimma Ethiopia Hourani Center for Applied Scientific Research Al-Ahliyya Amman University Amman Jordan

CO 2 laser cutting and electrical discharge machining (EDM) wire cutting are two advanced thermal energy-based methods widely utilized for precision profile cutting tasks. This study conducts a comprehensive experimental analysis of these techniques, focusing on their performance when cutting stainless steel grades AISI 316L and 304. The research evaluates key process parameters influencing the cut quality, aiming to achieve minimal surface roughness. Additionally, the surface morphologies resulting from both methods are thoroughly examined. By analyzing the cutting performance and tracking the outcomes for both techniques, the study identifies the most efficient cutting technology for these materials. Using a multi-objective optimization approach based on Genetic Algorithms, the study demonstrates a significant enhancement in surface roughness. The percentages of deviations for AISI 316 Stainless steel for 1.5, 2, and 2.5 mm thickness for CO 2 laser cut and EDM wire cut surfaces are 24.8%, 21.59%, and 35.61%, respectively, and also that The percentages of deviations for AISI 304 Stainless steel for 1.5, 2, and 2.5 mm thickness for CO 2 laser cut and EDM wire cut surfaces are 36.86%, 27.88%, and 22.96%, respectively. The optimized process achieves a superior surface roughness of cutting quality. These findings offer valuable insights into selecting the appropriate cutting method and parameters for achieving high-precision results in industrial applications.

关键词： AISI 304 and surface roughness AISI 316L CO2 laser cutting EDM wire cut

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Segmentation and Multi-facet Classification of Individual Logs in Wooden Piles 18th

Segmentation and Multi-facet Classification of Individual Lo...

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18th International Conference on Computer Aided Systems Theory, EUROCAST 2022

作者： Praschl, Christoph Auersperg-Castell, Philipp Forster-Heinlein, Brigitte Zwettler, Gerald Adam Research Group Advanced Information Systems and Technology Research and Development Department University of Applied Sciences Upper Austria Hagenberg Austria Department of Software Engineering School of Informatics Communications and Media University of Applied Sciences Upper Austria Hagenberg Austria Bluedynamics Auersperg-Castell KG Kritzing 31 Freinberg Austria Faculty of Computer Science and Mathematics University of Passau Passau Germany

ISBN: (纸本)9783031253119

The inspection of products and assessment of quality is connected with high costs and time effort in many industrial domains. This also applies to the forestry industry. Utilizing state-of-the-art deep learning models allows automizing the analysis of wooden piles in a vision-based manner. In this work, a parallel two-step approach is presented for the segmentation and multi-facet classification of individual logs, according to the wood type and quality. The present approach is based on a preliminary log localization step and like this allows determining the quality, volume and also the value of individual logs, respectively the whole wooden pile. Using a YOLOv4 model for wood species classification for douglas firs, pines and larches results in an accuracy of 74.53%, while a quality classification model for spruce logs reaches 86.58%. In addition to that, the trained U-NET segmentation model reaches an accuracy of 93%. In the future, the underlying data set and models will be further improved and integrated to a mobile application for the on site analysis of wooden piles by foresters. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Deep learning

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Sustainable poultry farming in developing nations: Exploring cassava waste utilization for enhanced poultry production and economic viability

Animal Research and One Health

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Animal research and One Health 2024年第3期2卷 308-313页

作者： Aroh, Izuchukwu Martin Agboje, Agida Christopher Ogbonna, Goodness N. Anyanka, Samuel Onyedikachi Macartan, Benjamin P. Ohanehi, Helen Amara Anigbogu, Nnamdi Mbanefo Department of Animal Nutrition and Forage Science College of Animal Science and Production Michael Okpara University of Agriculture School of Biosystems and Food Engineering University College Dublin Pig Development Unit TEAGASC Computational and Bio-Simulation Research Group University of Calabar Environment Soil and Land Use Department TEAGASC Department of Food Science College of Applied Food Science and Technology Michael Okpara University of Agriculture Department of Animal Nutrition and Forage Science Coordinator Life-Enzyme and Fine Chemical Research Michael Okpara University of Agriculture

In intensive poultry production, particularly in developing countries like Nigeria, addressing the issues of agricultural waste and feed costs for farmers is crucial. This study explores a solution by incorporating cassava waste into broiler chicken diets. The research examines its effects on economic factors, growth performance, carcass yield, and agricultural waste utilization over 8 weeks. Three hundred broiler chickens were divided into three groups: a control group without cassava waste and two treatment groups with 10% and 15% cassava waste inclusion. Results showed that a 10% inclusion improved key performance indicators such as weight gain, feed intake, feed conversion ratio, and carcass weight, while a 15% inclusion was less efficient than the control. Economically, diets with 10% and 15% cassava tuber waste were more cost-effective than the control, emphasizing the economic benefits of cassava-based diets for broiler chickens, and offering a sustainable, cost-efficient feeding option for poultry farmers. © 2024 The Authors. Animal research and One Health published by John Wiley & Sons Australia, Ltd on behalf of Institute of Animal science, Chinese Academy of Agricultural sciences.

关键词： agricultural waste utilization economics growth nutrition poultry

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Cinnamic acid shortens the period of the circadian clock in mice

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Biochemistry and Biophysics Reports 2017年 9卷 232-237页

作者： Oishi, Katsutaka Yamamoto, Saori Oike, Hideaki Ohkura, Naoki Taniguchi, Masahiko Biological Clock Research Group Biomedical Research Institute National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Ibaraki Japan Department of Applied Biological Science Graduate School of Science and Technology Tokyo University of Science Noda Chiba Japan Department of Computational Biology and Medical Sciences Graduate School of Frontier Sciences The University of Tokyo Kashiwa Chiba Japan Division of Food Function Research Food Research Institute (NFRI) National Agriculture and Food Research Organization (NARO) Tsukuba Ibaraki Japan Molecular Physiology and Pathology School of Pharma-Sciences Teikyo University Itabashi Tokyo Japan Division of Pharmacognosy Osaka University of Pharmaceutical Sciences Takatsuki Osaka Japan

Cinnamic acid (CA) derivatives have recently received focus due to their anticancer, antioxidant, and antidiabetic properties. The present study aimed to determine the effects of cinnamic acid on the circadian clock, which is a cell-autonomous endogenous system that generates circadian rhythms that govern the behavior and physiology of most organisms. Cinnamic acid significantly shortened the circadian period of PER2::LUC expression in neuronal cells that differentiated from neuronal progenitor cells derived from PER2::LUC mouse embryos. Cinnamic acid did not induce the transient mRNA expression of clock genes such as Per1 and Per2 in neuronal cells, but significantly shortened the half-life of PER2::LUC protein in neuronal cells incubated with actinomycin D, suggested that CA post-transcriptionally affects the molecular clock by decreasing Per2 mRNA stability. A continuous infusion of CA into mice via an Alzet osmotic pump under constant darkness significantly shortened the free-running period of wheel-running rhythms. These findings suggest that CA shortens the circadian period of the molecular clock in mammals. © 2017 The Authors

关键词： Cinnamic acid Circadian clock PER2::LUC protein Real-time reporter assay Wheel-running activity

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Study on fundamental processes of laser welded metals observed with intense x-ray beams 12th

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12th International Conference on X-Ray Lasers, 2010

作者： Muramatsu, T. Daido, H. Shobu, T. Takase, K. Tsukimori, K. Kureta, M. Segawa, M. Nishimura, A. Suzuki, Y. Kawachi, T. Applied Laser Technology Institute Tsuruga Head Office Japan Atomic Energy Agency Japan Quantum Beam Science Directorate Japan Atomic Energy Agency Japan Nuclear Science and Engineering Directorate Japan Atomic Energy Agency Japan Advanced Nuclear System Research and Development Directorate Japan Atomic Energy Agency Japan

ISBN: (纸本)9789400711853

With use of photon techniques including visible light, soft and hard x-rays, precise fundamental laser welding processes in the repair and maintenance of nuclear plant engineering were reviewed mechanistically. We make discussions centered on the usefulness of an intense soft x-ray beams for evaluations of spatial residual strain distribution and welded metal convection behavior including the surface morphology. Numerical results obtained with a general purpose three-dimensional code SPLICE for the simulation of the welding and solidifying phenomena. Then it is concluded that the x-ray beam would be useful as one of the powerful tools for understanding the mechanisms of various complex phenomena with higher accuracy and higher resolution. © Canopus Academic Publishing Limited 2011.

关键词： Repair

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Lipid recognition propensities of amino acids in membrane proteins from atomic resolution data

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BMC Biophysics 2011年第1期4卷 1-12页

作者： Morita, Mizuki Katta, AVSK M. Ahmad, Shandar Mori, Takaharu Sugita, Yuji Mizuguchi, Kenji Department of Fundamental Research National Institute of Biomedical Innovation Ibaraki Osaka 7-6-8 Saito Asagi Japan Institute of Bioinformatics Research and Development Japan Science and Technology Agency Chiyoda-ku Tokyo 5-3 Yonbancho Japan RIKEN Quantitative Biology Center Kobe Hyogo 7-1-26 Minatojima-minamimachi Chuo-ku Japan RIKEN Advanced Science Institute Saitama 2-1 Hirosawa Wako-shi Japan RIKEN Advanced Institute for Computational Science Kobe Hyogo 7-1-26 Minatojima-minamimachi Chuo-ku Japan

Background: Protein-lipid interactions play essential roles in the conformational stability and biological functions of membrane proteins. However, few of the previous computational studies have taken into account the atomic details of protein-lipid interactions ***: To gain an insight into the molecular mechanisms of the recognition of lipid molecules by membrane proteins, we investigated amino acid propensities in membrane proteins for interacting with the head and tail groups of lipid molecules. We observed a common pattern of lipid tail-amino acid interactions in two different data sources, crystal structures and molecular dynamics simulations. These interactions are largely explained by general lipophilicity, whereas the preferences for lipid head groups vary among individual proteins. We also found that membrane and water-soluble proteins utilize essentially an identical set of amino acids for interacting with lipid head and tail ***: We showed that the lipophilicity of amino acid residues determines the amino acid preferences for lipid tail groups in both membrane and water-soluble proteins, suggesting that tightly-bound lipid molecules and lipids in the annular shell interact with membrane proteins in a similar manner. In contrast, interactions between lipid head groups and amino acids showed a more variable pattern, apparently constrained by each protein's specific molecular function. © 2011 Morita et al;licensee BioMed Central Ltd.

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Unconventional excitonic states with phonon sidebands in layered silicon diphosphide (Jun, 10.1038/s41563-022-01285-3, 2022)

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NATURE MATERIALS 2022年第10期21卷 1212-1212页

作者： Zhou, Ling Huang, Junwei Windgaetter, Lukas Ong, Chin Shen Zhao, Xiaoxu Zhang, Caorong Tang, Ming Li, Zeya Qiu, Caiyu Latini, Simone Lu, Yangfan Wu, Di Gou, Huiyang Wee, Andrew T. S. Hosono, Hideo Louie, Steven G. Tang, Peizhe Rubio, Angel Yuan, Hongtao National Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional Materials College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing China Max Planck Institute for the Structure and Dynamics of Matter Center for Free Electron Laser Science Hamburg Germany Department of Physics University of California Berkeley CA USA Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA USA School of Materials Science and Engineering Peking University Beijing China Materials Research Center for Element Strategy Tokyo Institute of Technology Yokohama Japan College of Materials Science and Engineering National Engineering Research Center for Magnesium Alloys Chongqing University Chongqing China Center for High Pressure Science and Technology Advanced Research Beijing China Department of Physics National University of Singapore Singapore Singapore School of Materials Science and Engineering Beihang University Beijing China Center for Computational Quantum Physics Simons Foundation Flatiron Institute New York NY USA

Complex correlated states emerging from many-body interactions between quasiparticles (electrons, excitons and phonons) are at the core of condensed matter physics and material science. In low-dimensional materials, quantum confinement affects the electronic, and subsequently, optical properties for these correlated states. Here, by combining photoluminescence, optical reflection measurements and ab initio theoretical calculations, we demonstrate an unconventional excitonic state and its bound phonon sideband in layered silicon diphosphide (SiP2), where the bound electron–hole pair is composed of electrons confined within one-dimensional phosphorus–phosphorus chains and holes extended in two-dimensional SiP2 layers. The excitonic state and emergent phonon sideband show linear dichroism and large energy redshifts with increasing temperature. Our ab initio many-body calculations confirm that the observed phonon sideband results from the correlated interaction between excitons and optical phonons. With these results, we propose layered SiP2 as a platform for the study of excitonic physics and many-particle effects.

关键词： Electronic properties and materials Electronic structure Optical spectroscopy Two-dimensional materials

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Electrochemical reduction of CO2 in micropores

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Studies in Surface science and Catalysis 1998年 114卷 585-588页

作者： Yamamoto, T. Tryk, D.A. Hashimoto, K. Fujishima, A. Okawa, M. Department of Applied Chemistry Faculty of Engineering University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113 Japan Research Center for Advanced Science and Technology University of Tokyo 4-6-1 Komaba Megro-ku Tokyo 153 Japan Electric Power Development Co. Ltd. 6-15-1 Ginza Chuo-ku Tokyo 104 Japan

This chapter describes CO 2 electrochemical reduction on high area metal electro catalysts supported on activated carbon fibers (ACF), which contain slit-shaped pores with width on the order of nanometers. Such electro catalysts were used in the form of gas diffusion electrodes (GDE), which are used in the fuel-cell field. The structure of this type of electrode is shown in the chapter. The reaction takes places at the gas phase / electrolyte (liquid phase) / electrode interface, the so-called three-phase boundary.

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Integrated multi-mode glass ceramicﬁber for high-resolution temperature sensing

Advanced Powder Materials

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advanced Powder Materials 2023年第4期2卷 54-62页

作者： Yongsheng Sun Meihua Chen Puxian Xiong Yuzhen Wang Shuhang Tian Qingquan Jiang Yao Xiao Hongyou Zhou Peishan Shao Qiuqiang Zhan Jiulin Gan Qi Qian Dongdan Chen Zhongmin Yang School of Materials Science and Engineering School of Physics and OptoelectronicsState Key Laboratory of Luminescent Materials and DevicesInstitute of Optical Communication MaterialsGuangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and DevicesAnd Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied TechniquesSouth China University of TechnologyGuangzhou 510641China Centre for Optical and Electromagnetic Research National Center for International Research on Green OptoelectronicsSouth China Academy of Advanced OptoelectronicsMOE Key Laboratory&Guangdong Provincial Key Laboratory of Laser Life ScienceSouth China Normal UniversityGuangzhou 510631China

Optical temperature sensors,which can accurately detect temperature in biological systems,are crucial to the development of healthcare *** challenge the state-of-art technology,it is necessary to design single luminescence center doped materials with multi-wavelength emission for optical temperature sensors with more modes and higher ***,an Er^(3+)single-doped KYF4 nanocrystals glass ceramic with an obvious thermochromic phenomenon is reported for theﬁrst time,which shows a different temperature-dependent green,red,and near-infrared luminescence behavior based on thermal disturbance *** addition,Er^(3+)single-doped GCﬁber was drawn and fabricated into multi-mode opticalﬁber temperature sensor,which has superior measured temperature resolution(<0.5℃),excellent detection limit(0.077℃),and high correlation coefﬁcient(R^(2))of *** importantly,this sensor can monitor temperature in different scenarios with great environmental interference resistance and *** results indicate that our sensor shows great promise as a technology for environmental and healthcare monitoring,and it provides a route for the design of opticalﬁber temperature sensors with multi-mode and high resolution.

关键词： Er^(3+) Glass ceramic Thermochromic Opticalﬁber sensor Healthcare monitoring

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Chirped Large Mode Area Photonic Crystal Modal Fibers and its Resonance Modes Based on Finite Element Technique

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Journal of Optical Communications 2023年第3期44卷 333-338页

作者： Amiri, I.S. Rashed, Ahmed Nabih Zaki Sarker, Kaushik Paul, Bikash Kumar Ahmed, Kawsar Computational Optics Research Group Advanced Institute of Materials Science Ton Duc Thang University Ho Chi Minh City Viet Nam Faculty of Applied Sciences Ton Duc Thang University Ho Chi Minh City Viet Nam Electronics and Electrical Communications Engineering Department Faculty of Electronic Engineering Menoufia University Menouf32951 Egypt Department of Software Engineering Daffodil International University 102 Mirpur Road Shukrabad Dhanmondi Dhaka1207 Bangladesh Group of Bio-photomatiχ Information and Communication Technology Mawlana Bhashani Science and Technology University Tangail Santosh1902 Bangladesh Department of Information and Communication Technology Mawlana Bhashani Science and Technology University Tangail Santosh1902 Bangladesh

The study has outlined the finite element technique used for the fiber modal analysis of photonic crystal fiber (PCF) structure with a hexagonal/circular air holes arrangement on the cladding of pure fiber-optic silica. The used fibers that are namely highly nonlinear fiber (HNLF), single model silica fiber (SMSF) are combined with PCFs with different dopants concentration. Leakage loss, number of guided resonant modes, fiber birefringence, effective refractive index and cross-section areas and nonlinear coefficient parameters are measured inaccurate estimation. The optimum resonant guided modes are also estimated for different lattice infrastructure in circular PCFs. © 2019 Walter de Gruyter GmbH, Berlin/Boston.

关键词： Modal analysis

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