Schema Versioning in Databases: A Literature Review by Zouhaier Brahmia, Fabio Grandi, Barbara Oliboni

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Methodological approach to conducting a comparative analysis of economic systems at various stages of historical development by F. P. Volkov, E. V. Kulyasova, A. V. Voronin

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Model Calculation of Enhanced Light Absorption Efficiency in Two-Dimensional Photonic Crystal Phosphor Films by Taehun Kim, Sanghoon Lee, Kyungtaek Min

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Small cell conversion complicated with hypertrophic pulmonary osteoarthropathy after targeted therapy for advanced EGFR-mutated lung adenocarcinoma: A case report by Sijia Zhang, Leichong Chen, Kuikui Zhu, Rui Meng

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Connotation, research status, and development directions of clean coal geology in China by Yuegang TANG, Shaoqing WANG, Xiaoshuai WANG, Xin GUO, Yafeng WANG, Liping XUE, Harold H. Schobert

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Current problems of the patent tax system by N. Z. Zotikov

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A Design Procedure and Control Method for Improving Efficiency of a Family of Resonant Converters Over Wide Operating Conditions by Jasem Shahsevani, Reza Beiranvand

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Influence of A Novel Catalysis on The Pyrolysis Yields Obtained by Two Different Reactors by Mert Kılınçel, Ethem Toklu, Fikret Polat

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Cultivation of straw mushroom (Volvariella volvacea) on oil palm empty fruit bunch growth medium by Sugeng Triyono, Agus Haryanto, Mareli Telaumbanua, Jamalam Lumbanraja, Filip To

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A 3D-Printed Spherical Dual-Circular Polarized Luneburg Lens Antenna for Ku-Band by Qing Wang, Xiaohai Han, Pu Yu, Jian-Qiang Hou, Zhen-Ya Lei

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Hybrid energy harvesting enabled by a covalent organic framework membrane by Jiaming Yi, Zhuozhi Lai, Qing Guo, Zhiwei Xing, Qi Sun

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Thermal energy storage materials designed from recycled Tetra Pak waste and paraffin waxes with enhanced photothermal conversion efficiencies by Safna Nishad, Mabrouk Ouederni, Igor Krupa

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How to Design a Differential CMOS <italic>LC</italic> Oscillator by Asad A. Abidi, David Murphy

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Difference of SARS-CoV-2 infection and influence factors between people with and without HIV infection by Jianhui Yang, Esben Strodl, Dandan Zhang, Haibo Jiang, Kun Chu, Shiwen Tan, Zehao Ye, Hongbo Shi, Feng Tong, Weiqing Chen

Subjects: “…The long nucleic acid conversion time…”
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A hardware prototype of wideband high‐dynamic range analog‐to‐digital converter by Satish Mulleti, Eliya Reznitskiy, Shlomi Savariego, Moshe Namer, Nimrod Glazer, Yonina C. Eldar

Subjects: “…analog‐to‐digital conversion…”
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Disturbance Observer-Based Super-Twisting SMC for Variable Speed Wind Energy Conversion System Under Parametric Uncertainties by Ahmad Bala Alhassan, Muhammad Auwal Shehu, Vijayakumar Gali, Ton Duc do

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Not Just Plug and Play: Integrating Professional Skills Development into Undergraduate Experiential Learning Courses by Steven Henle, Susan T. Dinan, Megan Marcoux, Janette Barrington, Julia L. Ginsburg, Sandra Gabriele

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Temporal-spatial evolution and formation mechanism of energy consumption carbon footprint at county scale in the Yellow River Basin by Liyan Zhang, Mei Song, Yan Gao

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Optimizing Hydrogen Production in the Co-Gasification Process: Comparison of Explainable Regression Models Using Shapley Additive Explanations by Thavavel Vaiyapuri

Subjects: “…thermochemical conversion…”
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Risk factors and outcomes in patients who switched from peritoneal dialysis to physician-oriented or patient-oriented kidney replacement therapy by Liu Zhang, Xu Guan, Liang Liu, Yinghui Huang, Jiachuan Xiong, Jinghong Zhao

Subjects: “…kidney replacement therapy conversion…”
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