Voici notre dernière sélection de pays du monde entier publications et brevets en anglais sur l'astrophysique, entre de nombreuses revues scientifiques en ligne, classées et axées sur l'astrophysique, l'étoile à neutrons, la supernova, le trou noir, les micro-ondes cosmiques, le CMBR, le quasar, le décalage vers le rouge, le disque d'accrétion, la matière noire, l'inflation cosmique, la magnétohydrodynamique, l'énergie noire, Hubble, l'horizon des événements, l'onde gravitationnelle, l'exoplanète, la géante rouge, la naine blanche et le décalage vers le rouge.
Study on the Reconstruction of the Spectral Pattern of Near-Island Reef Bimodal Waves
Published on 2025-03-03 by Weihang Sun, Yuguo Pei, Leilei Qu, Xiaobo Wang @MDPI
Abstract: Accurately fitting bimodal wave spectra is crucial for understanding complex ocean conditions and promoting ocean-related research. In this context, this paper aims to solve the problem of reconstructing bimodal wave spectra in domestic island and reef areas. Taking measured data from the Jiangsu Xiangshui station in August 2017 and the Xisha Sea area on 1–3 August 2014 as case studies, the researchers selected three types of original bimodal wave spectra. After obtaining the sampl[...]
Our summary: Study aims to reconstruct bimodal wave spectra in island and reef areas using measured data and novel wave spectrum, achieving high fitting accuracy for different types of bimodal spectra.
Reconstruction, Bimodal, Wave, Spectra
Publication
A Numerical and Experimental Analysis
Published on 2025-03-01 by Ruiqing Lang, Yongquan Han, Yonglin Ma @MDPI
Abstract: The characteristics of a variable polarity plasma arc (VPPA) and the keyhole behavior significantly influence weld formation. This study investigates the impact mechanism of welding current on weld formation by examining both arc thermal-force output and keyhole behavior through a combination of numerical analysis and experimental methods. A three-dimensional transient arc model with alternating loading of electrode negative (EN) and electrode positive (EP) polarity arcs is developed based on ma[...]
Our summary: Investigating impact mechanism of welding current on weld formation through numerical and experimental analysis of variable polarity plasma arc characteristics and keyhole behavior. Developing a transient arc model with alternating EN and EP polarity arcs based on magnetohydrodynamics and UDS. Analyzing arc characteristics, thermal force, and keyhole stability for optimal weld bead formation.
numerical analysis, experimental methods, variable polarity plasma arc, welding current
Publication
Fluorescence Quenching of Graphene Quantum Dots from Orange Peel for Methyl Orange Detection
Published on 2025-02-28 by Weitao Li, Yang Liu, Xinglong Pang, Yuanhao Huang, Zeyun Dong, Qian Niu, Yuping Xiong, Shang Li, Shuai Li, Lei Wang, Huazhang Guo, Saisai Cui, Shenpeng Hu, Yuenan Li, Tiantian Cha, Liang Wang @MDPI
Abstract: Methyl orange (MO) is an organic synthetic dye widely used in laboratory and industrial applications. In laboratory settings, it serves as an acid–base indicator due to its distinct color change in both acidic and alkaline environments. Industrially, it is primarily utilized in the textile industry for its ultraviolet (UV) absorption properties. However, the discharge and leakage of methyl orange into the environment can cause severe ecological damage and pose potential carcinogeni[...]
Our summary: Synthesis of GQDs from orange peel for MO detection, GQDs exhibit cyan and yellow fluorescence, Methyl orange quenches fluorescence of y-GQDs.
Fluorescence Quenching, Graphene Quantum Dots, Methyl Orange, Detection
Publication
Numerical Simulation of Effects of Mold Cavity and Submerged Entry Nozzle on Flow, Heat Transfer and Solidification in Funnel-Type Molds for Thin Slab Casting
Published on 2025-02-11 by Zhaoyang Li, Yao Lu, Rudong Wang, Gengyang Li, Heng Cui @MDPI
Abstract: As the third generation of thin slab continuous casting and rolling technology, endless strip production (ESP) has been widely used in the steelmaking industry. The key equipment in this process, the funnel-type mold, is prone to accidents such as slag entrainment, surface cracks and steel leakage under high casting speed conditions. To reduce the incidence of the above accidents, the numerical model of flow, heat transfer and solidification in the funnel-type mold is established by using the k-[...]
Our summary: Study on effects of mold cavity and submerged entry nozzle on flow, heat transfer, and solidification in funnel-type molds for thin slab casting. Optimizing ESP process through numerical model and MHD. Comparison between type-I and type-II molds and SEN designs. Reducing risk of accidents such as slag entrainment, surface cracks, and steel leakage.
Numerical Simulation, Mold Cavity, Submerged Entry Nozzle, Thin Slab Casting
Publication
Insights into supermassive black hole mergers from the gravitational wave background
Published on 2025-02-07 by C. M. F. Mingarelli, L. Blecha, T. Bogdanovi?, M. Charisi, S. Chen, A. Escala, B. Goncharov, M. J. Graham, S. Komossa, S. T. McWilliams, D. A. Schwartz, J. Zrake @NATURE
Abstract: Nature Astronomy, Published online: 07 February 2025; doi:10.1038/s41550-025-02482-1At the Kavli Institute for Theoretical Physics, participants of the rapid response workshop on the gravitational wave background explored discrepancies between experimental results and theoretical models for a background originating from supermassive black hole binary mergers. Underestimated theoretical and/or experimental uncertainties are likely to be the explanation. Another key focus was the wide variety of s[...]
Our summary: Insights into supermassive black hole mergers, discrepancies between experimental results, wide variety of search methods, compelling detections
black hole mergers, gravitational wave background, supermassive, theoretical models
Publication
Dual-Loop Charge Management for Space-Based Gravitational Wave Detection
Published on 2025-01-24 by Tao Yu, Zihan Zhao, Yongkun Chen, Huadong Li, Zhi Wang @MDPI
Abstract: In space-based gravitational wave detection missions, inertial sensors act as the inertial reference, requiring the test mass (TM) to maintain exceptionally low residual acceleration noise. High-energy particles, cosmic rays, and ion pumps during ground tests can quickly lead to charge accumulation on the TM surface, necessitating a charge management system to regulate surface charges. To manage the TM surface potential, this paper develops a mathematical model of the charge management system us[...]
Our summary: Mathematical model developed for charge management system using UV discharge simulation methods. Dual-loop control method implemented for precise regulation of surface potential. Achieving control accuracy of 1.1×10^6e for space-based gravitational wave detection missions. Insights provided for future charge management system design.
charge management, gravitational wave detection, dual-loop control, space-based missions
Publication
A lighting control system for the entrance section of a highway tunnel to alleviate the "black hole effect"
Patent published on the 2024-11-14 in LU under Ref LU507220 by UNIV CHONGQING JIAOTONG [CN] (Yang Hongyun [cn])
Abstract: This invention belongs to the field of highway tunnel lighting technology and specifically involves a lighting control system for the entrance section of a highway tunnel to mitigate the black hole effect. It includes a data acquisition module, a control center module, and a load circuit. The data acquisition module comprises tunnel entrance visibility sensors, air temperature sensors, meteorological detection devices, and tunnel interior color temperature sensors. The visibility sensor detects [...]
Our summary: Entrance section lighting control system, field of highway tunnel lighting, data acquisition module with sensors, real-time monitoring and control center
highway tunnel lighting technology, lighting control system, data acquisition module, black hole effect
Patent
Giant swamp taro (cyrtosperma merkusii) cookies
Patent published on the 2023-05-26 in PH under Ref PH2202205136 by ROMBLON STATE UNIV [PH] (Erispe Jannette S [ph], Ipedro Raymund R [ph], Juanzo Clara Jean M [ph])
Abstract: A method of producing giant swamp taro (Cyrtosperma merkusii) cookies comprising the steps of, gathering giant swamp taro plant, cutting, washing, peeling, slicing, drying the sliced corm by sun-drying, grinding, powderizing, preparing all ingredients consisting of powdered corm, baking soda, salt, granulated sugar, brown sugar, butter, eggs, and vanilla extract, preheat the oven, lining a cookie sheet with parchment paper, sifting the powdered giant swamp taro, baking soda, salt and granulated [...]
Our summary: Method of producing giant swamp taro cookies includes gathering, cutting, washing, peeling, slicing, drying, grinding, powderizing, preparing ingredients, baking, and cooling.
giant swamp taro, cookies, method, production
Patent
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