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VALIdATION OF A HEAdSPACE GAS CHrOMATOGrAPHY METHOd FOr VOLATILE rESIdUAL SOLVENTS IdENTIFICATION IN rAdIOPHArMACEUTICALS

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UPB Scientific Bulletin, Series B: Chemistry and materials Science 2024年第4期2024卷 119-130页

作者： Tudoroiu-Cornoiu, Maria-roxana Chilug, Elena Livia Ion, Ion Niculae, dana Doctoral School of Applied Chemistry and Materials Science Faculty of Chemical Engineering and Biotechnologies National University of Science and Technology POLITEHNICA Bucharest Romania Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering Măgurele Romania

The following study presents the development and validation of a headspace gas chromatography (HS-GC) analytical method for determining five residual solvents, frequently encountered in radioactive drugs. Measurement of residual solvents is a critical step in the testing and release of pharmaceutical products. The method demonstrated high accuracy and precision, being specific and fast, under the regulations of the European Pharmacopoeia. © 2024, Politechnica University of Bucharest. All rights reserved.

关键词： Gas chromatography

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droplet morphology analysis of drop-on-demand inkjet printing

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China Foundry 2024年第1期21卷 20-28页

作者： Hu-xiang Xia Takechi Kensuke Tajima Shin Kawamura Yoshiumi Qing-yan Xu Key Laboratory for Advanced Materials Processing Technology(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Toyota Central R&D Labs. Inc.41-1 Yokomichi NagakuteAichi 480-1192Japan Frontier Research Center Toyota Motor Corporation1 Toyota-ChoToyotaAichi 471-8572Japan

As an accurate 2d/3d fabrication tool,inkjet printing technology has great potential in preparation of micro electronic *** morphology of droplets produced by the inkjet printer has a great impact on the accuracy of *** this study,the drop-on-demand(dod)inkjet simulation model was established,and the accuracy of the simulation model was verified by corresponding *** simulation result shows that the velocity of the droplet front and tail,as well as the time to disconnect from the nozzle is mainly affected by density(ρ),viscosity(μ)and surface tension(σ)of *** the liquid filament is about to disconnect from the nozzle,the filament length and filament front velocity are found to have a linear correlation withσ/ρμand ln(ρ/(μσ1/2)).

关键词： microdevice fabrication inkjet printing droplet morphology modeling and simulation

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Fuzzy Logic Technique based Fault diagnosis for Electrical distribution Network 3

Fuzzy Logic Technique based Fault Diagnosis for Electrical D...

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3rd International Conference for Innovation in technology, INOCON 2024

作者： rana, Saurabh G. Talati, Shefali desai, Manish J. The Maharaja Sayajirao University Faculty of Technology and Engineering Department of Electrical Engineering Vadodara India Electrical Research and Development Association Department of R&d Vadodara India

ISBN: (纸本)9798350381931

The power system needs to operate reliably and efficiently, with the distribution system being a critical component. distribution systems are prone to faults and malfunctions for several reasons. These issues can have a significant impact on the power grid, but their effects can be minimized quickly and accurately through fault diagnostics. Electric utilities face an ongoing challenge in promptly and precisely identifying and locating faults in the distribution system. AI tools can be an efficient method for accurately identifying these faults. There are several possible diagnostic methods, such as fuzzy logic, ANN (artificial neural network), ANFIS (adaptive neuro-fuzzy inference system), support vector machines, genetic algorithms, and matching approaches. Each technique has its own advantages and disadvantages. The paper has employed fuzzy logic for fault detection, identification, and location. This paper includes the study of multiple faults on different buses. Also, the identification and location of multiple faults are included. The simulation and algorithm development have been carried out in MATLAB/Simulink. Thus, fault detection, identification, and location have been done through a fuzzy logic algorithm. © 2024 IEEE.

关键词： Location

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Effect of cooling scheme and coating of drills on hole quality in drilling of Inconel 718

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Procedia CIrP 2024年 123卷 137-142页

作者： Jinming Zhou Stefan Frejd Kateryna Slipchenko Andrii Hrechuk rachid M’Saoubi Division of Production and Materials Engineering Lund University Lund Sweden Seco Tools AB R&D Material and Technology Development Fagersta Sweden

Challenges in drilling nickel-based superalloys, such as Inconel 718 (IN718), are multifaceted. High requirement of hole surface quality in drilling such alloy must deal with extreme material properties and complex process condition in drilling operation. This paper presents an experimental investigation on the effect of PVd coated solid carbide drills under different internal cooling schemes on hole quality in drilling IN 718 alloy. Three types of solid carbide drills were used in the series of drilling experiments, including PVd coated and uncoated drills, and different design in the number of internal cooling channels, two channels and four channels. The objective of the investigation is to assess the effect of coating and efficiency of internal cooling on surface quality in drilling IN718 alloy. Surface quality on drilled holes in terms of roughness, burr formation, subsurface deformation and strain hardening has also been measured and analyzed on the machined specimen. The roughness and burr size on drilled holes demonstrated little differences among the three types of testing drills. Surface roughness was severely deteriorated by the chip trapped in the hole leaving scratch and smears on the surface. Nevertheless, the scheme of internal cooling channels and PVd coating exhibited noticeable influence on quality of drilled hole surface.

关键词： drill Superalloy Surface quality PVd coating Cooling Burr

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Fluorophosphates and fluorosulfates cathode materials: Progress towards high energy density sodium-ion battery

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Nano research 2024年第3期17卷 1427-1440页

作者： Mohammed Hadouchi Jingrong Hou Toshinari Koketsu Abdelilah Lahmar Jiwei Ma Laboratoire de Chimie Appliquée des Matériaux Centre des Sciences des MatériauxFaculty of ScienceMohammed V University in RabatAvenue Ibn BattoutaBP 1014RabatMorocco Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials Institute of New Energy for VehiclesSchool of Materials Science and EngineeringTongji UniversityShanghai 201804China Battery Materials Development Section Business Creation Sector R&D CenterMitsui Mining&Smelting Co.Ltd.362-0021 SaitamaJapan Laboratoiry of Condensed Matter Physics University of Picardie Jules Verne33 Rue Saint-Leu 80039AmiensFrance

The rapid diffusion of renewable energy boosts the wide deployment of large-scale energy storage *** the low cost and high crustal abundance,sodium-ion battery(SIB)technology is expected to become a dominant technology in that area in the *** the practical application,novel cathode materials are urged to develop that show high energy density without sacrificing their cost and benignity to the *** the years of many studies,this still remains a huge challenge to battery *** this review,we discuss recent breakthroughs in SIB cathode materials with high energy density,namely fluorphosphates and *** design of materials,the crystal structure,the electrochemical performance,and the underlaying intercalation mechanism are systematically *** strategies and research directions are also provided to advance future high-energy,low-cost,and ecofriendly cathode materials for next generation SIB.

关键词： fluorophosphates fluorosulfates crystal structure intercalation mechanism high energy density sodium-ion battery

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design and implementation of the second-generation COSPAS-SArSAT distress beacon based on Sdr 6

Design and implementation of the second-generation COSPAS-SA...

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6th IEEE International Conference on Automation, Electronics and Electrical Engineering, AUTEEE 2023

作者： renle, Zheng Wenxue, Liu Chaosan, Yang Jintao, Wan dongyang, Li Jinhai, Li Imecas Communications and Information Engineering R&d Center Beijing China Imecas New Technology Development Department Beijing China

ISBN: (纸本)9798350305623

COSPAS-SArSAT has currently completed the design of a new generation distress beacon systems, namely the second-generation distress beacon system. The second-generation distress beacon adopts dSSS-OQPSK as its basic signal modulation mode, while adopting a new signal detail structure. This paper provides a solution for the hardware implementation of the second-generation COSPAS-SArSAT distress beacon on Software-defined radio (Sdr). Firstly, the baseband signal that meets the definition format of the second-generation beacon standard was generated, and then the second-generation beacon was transmitted through the Universal Software radio Peripheral (USrP). By comparing with specific requirements of the second-generation distress beacon standard, the second-generation beacon generated by this paper can meet the requirements of the second-generation COSPAS-SArSAT distress beacon standard, and the method proposed in this paper has the advantages of flexibility and higher signal reconfigurability. © 2023 IEEE.

关键词： COSPAS-SArSAT dSSS-OQPSK Sdr second-generation distress beacon

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The Non-destructive Three-dimensional Analysis of Crack in Solder Joints Employing by deep Learning Technique

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Journal of Japan Institute of Electronics Packaging 2024年第5期27卷 466-471页

作者： Hasegawa, Masashi Onizuka, riri Ogata, Shin Ueki, ryusuke Takahashi, Masanori R&D development Qualtec Co. Ltd. 4-230 Sambo-cho Sakai-ku Sakai-shi590-0906 Japan Quality Technology development Qualtec Co. Ltd. 4-230 Sambo-cho Sakai-ku Sakai-shi590-0906 Japan

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Organic matter occurrence and pore-forming mechanisms in lacustrine shales in China

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Petroleum Science 2022年第4期19卷 1460-1472页

作者： Li-Chun Kuang Lian-Hua Hou Song-Tao Wu Jing-Wei Cui Hua Tian Li-Jun Zhang Zhong-Ying Zhao Xia Luo Xiao-Hua Jiang Science and Technology R&D Department CNPCBeijing100000China Research Institute of Petroleum Exploration and Development CNPCBeijing100083China National Energy Tight Oil and Gas R&D Center Beijing100083China Key Laboratory of Oil and Gas Reservoirs CNPCBeijing100083China

The evolution of pore structure in shales is affected by both the thermal evolution of organic matter(OM)and by inorganic diagenesis,resulting in a wide variety of pore *** paper examines the OM distribution in lacustrine shales and its influence on pore structure,and describes the process of porosity *** principal findings are:(i)Three distribution patterns of OM in lacustrine shales are distinguished;laminated continuous distribution,clumped distribution,and stellate scattered *** differences in total organic carbon(TOC)content,free hydrocarbon content(S_(1)),and OM porosity among these distribution patterns are discussed.(ii)Porosity is negatively correlated with TOC and plagioclase content and positively correlated with quartz,dolomite,and clay mineral content.(iii)Pore evolution in lacustrine shales is characterized by a sequence of decreasing-increasing-decreasing porosity,followed by continuously increasing porosity until a relatively stable condition is reached.(iv)A new model for evaluating porosity in lacustrine shales is *** this model,the organic and inorganic porosity of shales in the Permian Lucaogou Formation are calculated to be 2.5%-5%and 1%-6.3%,respectively,which correlate closely with measured *** findings may provide a scientific basis and technical support for the sweet spotting in lacustrine shales in China.

关键词： Shale oil Unconventional oil and gas Organic matter Pore evolution Log interpretation model

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Spherical modification of tungsten powder by particle composite system

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rare Metals 2022年第6期41卷 1972-1976页

作者： Cong-Cong Wang Cheng-Chang Jia Peng Gao Guo-Sheng Gai Yu-Fen Yang School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Powder Technology R&D Group Department of Material Science and EngineeringTsinghua UniversityBeijing 100084China

Owing to contradiction between increasing demand of spherical tungsten powder and limitation of traditional manufacturing technology,a novel preparation method was developed to sphericize the polygonal tungsten powder by means of modification of particle composite *** powder particles were modified by par-ticle composite system,and detailed characterization by scanning electron microscopy(SEM)was *** size distribution and function mechanism were analyzed,and the internal relationship between average diameter and processing time was *** results show that the spherical tungsten powder with an average diameter of 6.41μm is obtained from polyhedral tungsten powder with an average diameter of 7.50μ*** spherical effect could be achieved(sharp edge angles of particles are rounded off and reshaped)when the processing time is over 30 *** relationship between average diameter(d)and pro-cessing time can be described by the exponential decay model,which provides a good interpretation for the process of *** relationship between them can be expressed by the equation d=1.87406exp(-x/8.92718)+*** proposed method could readily enable large-scale production of spherical tungsten powder.

关键词： Tungsten powder Modification Average diameter Powder metallurgy

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Fully carbonate-electrolyte-based high-energy-density Li–S batteries with solid-phase conversion

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Carbon Energy 2024年第11期6卷 14-26页

作者： Takashi Hakari Yuto Kameoka Kaihei Kishida Shinji Ozaki Chihiro Murata Minako deguchi ryo Harada Tomoki Fujisawa Yusuke Mizuno Heisuke Nishikawa Tomoyuki Tamura Yiqun Wang Hikari Takahara Takashi Aoki Tokuo Inamasu daisuke Okuda Masashi Ishikawa Department of Chemistry and Materials Engineering Faculty of ChemistryMaterials and BioengineeringKansai UniversitySuitaOsakaJ apan R&D Center GS Yuasa International Ltd.Minami-kuKyotoJapan Department of Physical Science and Engineering Nagoya Institute of TechnologyNagoyaAichiJapan Application Laboratory X-ray Product DivisionRigaku CorporationTakatsukiOsakaJapan

Carbonate-electrolyte-based lithium–sulfur(Li–S)batteries with solid-phase conversion offer promising safety and scalability,but their reversible capacities are *** addition,large-format pouch cells are paving the way for large-scale *** study demonstrates the in situ formation of a solid-electrolyte interphase(SEI)as a protective layer using vinylene carbonate(VC),highlighting its industrial adaptability.A high reversible capacity is achieved by the lithiated poly-VC SEI formed inside the cathode particles as a nanoscale ionic conduction path,along with the traditional surface protective ***,the severe dissolution of poly-VC is mitigated by LiF derived from fluorine ethylene carbonate as a co-solvent,enabling high rate performance and a long cycle life.A large 8 Ah pouch cell is successfully developed,which shows a high energy density of 400 Wh kg^(−1) based on the cell *** work demonstrates the high performance of large-scale Li–S batteries with the in situ formation of a protective layer as a scalable technique for future applications.

关键词： lithium-sulfur batteries pouch cells solid-electrolyte interphase

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