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regulation of Surface Hydrophilicity in Amphiphilic dendron/Polyimide regular Through-Pore Composite Membranes Via Grafting Modification for the development of Versatile Oil-Water Separation Membranes

SSRN

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SSrN 2025年

作者： Hu, Chien-Chieh Jeng, ru-Jong Sung, Cai-Syuan Wu, Chien-Hsin Huang, Ying-Chi Chang, Huai-Che Lee, Kueir-rarn Lai, Juin-Yih Advanced Membrane Materials Research Center Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei10607 Taiwan Institute of Polymer Science and Engineering National Taiwan University Taipei106319 Taiwan Department of Chemical Engineering National Taiwan University of Science and Technology Taipei10607 Taiwan R&D Center for Membrane Technology Chung Yuan Christian University Chung Li32023 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Taoyuan Chungli32003 Taiwan

The rapid advancement of industrial processes has led to the substantial release of oily wastewater into the environment, posing a severe threat to ecological systems. Therefore, the development of highly efficient oil-water separation membranes is of critical importance. In this study, a casting solution was prepared by dissolving C18 polyurethane/malonamide dendron and polyimide (PI) in chloroform. This solution was then applied to the filter paper via drop-casting. The surface of the filter paper was subsequently treated using the breath-figure method, facilitating the formation of a regular through-pore composite membrane. The membrane surface incorporates azetidine-2,4-dione, a functional moiety presented in the C18 polyurethane/malonamide dendron, which undergoes a ring-opening reaction with primary amine-functionalized compounds. Hydrophilic branched polyethyleneimine (PEI) or hydrophobic octadecylamine can be covalently attached to the membrane surface, enabling the fabrication of membranes tailored for either oil-in-water or water-in-oil emulsion separation. This tunable surface chemistry, combined with the highly ordered through-pore structure, enables the development of versatile oil-water separation composite membranes with ultra-high permeance and excellent rejection. The degree of membrane hydrophilicity or hydrophobicity can be precisely modulated by adjusting parameters such as grafting density, molecular weight of the grafted compound, and reaction duration. Under optimized conditions, modification with branched polyethyleneimine (PEI 10000) for 6 h resulted in a membrane with high hydrophilicity and underwater superoleophobicity, achieving an oil-in-water emulsion permeance of 49,518.4 LMH/bar and a rejection of 99.1%. Conversely, the original regular through-pore composite membrane demonstrated a water-in-oil emulsion permeance of 380,520.8 LMH/bar with a rejection of 96.1%. These findings highlight the potential of integrating regular through-por

关键词： Grafting (chemical)

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Fast-Settling Onboard Electrochemical Impedance Spectroscopy System Adopting Two-Stage Hilbert Transform

Fast-Settling Onboard Electrochemical Impedance Spectroscopy...

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Annual Conference of Industrial Electronics Society

作者： Young-Nam Lee Min Jae Jung Seong-Won Jo Gul rahim Sang-Gug Lee Kyung-Sik Choi School of Electrical Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon South Korea Autosilicon Co. Ltd. at Daejeon R&D Center Daejeon South Korea Department of Information Technology and Electrical Engineering ETH Zürich Zürich Switzerland

Electrochemical impedance spectroscopy (EIS) is a non-invasive method for analyzing battery states based on impedance measurements. With the widespread use of high-capacity lithium-ion batteries in the range of mΩ impedance, achieving highly accurate impedance measurements becomes crucial for precise battery examination. EIS systems frequently utilize a digital lock-in amplifier (dLIA) to achieve ultra-precision impedance readings, but it requires a long settling time. This study proposes an innovative EIS architecture with a two-stage Hilbert transform that significantly reduces the measurement time by widening the bandwidth of noise suppression low-pass filter while maintaining high accuracy. It achieves a substantial 66% reduction in the estimated settling time at the lower bound frequency of 1 Hz and a 57% reduction in the total measurement time across the frequency range of 1-to-1k Hz.

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Measure and Quantify the Water State of Frozen dough in Situ: Insights from the Study of Variable Temperature 1h Time-domain Nuclear Magnetic resonance (Vt-Nmr)

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SSrN 2025年

作者： Wang, Shujing Li, Huipin Tang, Ning Ji, Shengxin Ai, Zhilu Yang, Yong College of Food Science and Technology Henan Agricultural University Zhengzhou450002 China Key Laboratory of Staple Grain Processing Ministry of Agriculture and Rural Affairs Zhengzhou450002 China National R&D Center for Frozen Rice & Wheat Products Processing Technology Zhengzhou450002 China Henan Engineering Research Center of Cold-Chain Food Zhengzhou450002 China

The water states and distribution in frozen dough are critical to its quality. In this study, variable temperature 1H time-domain nuclear magnetic resonance (VT-NMr) was used to in situ investigate the unfrozen water (UFW) content of frozen dough and the changes in water distribution during the freezing process. VT-NMr results indicated that higher gluten content and lower water content corresponded to higher UFW levels. The UFW content measured by VT-NMr was consistent with values obtained by differential scanning calorimetry (dSC), confirming the efficacy of VT-NMr as a non-destructive tool for studying water states in frozen dough. during the freezing process from 2 °C to -30 °C, both the water proton population area and T2 relaxation time decreased significantly. At -30 °C, the water distribution within the dough stabilized. VT-NMr offered significant potential for online quality monitoring in industrial frozen dough production. © 2025, The Authors. All rights reserved.

关键词： Nuclear magnetic resonance

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World’s First 1 Hz driving Fringe-Field Switching (FFS) LCd for Power Saving

World’s First 1 Hz Driving Fringe-Field Switching (FFS) LCD...

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SId International Symposium digest of Technical Papers, 2023

作者： Baek, Seung-Hwa Jung, Jong-Wook Park, Hee-Jung Lee, dong-Jin Park, Sun-Mi Kwon, Ki-Sun Jin, Heui-Seok Park, Han Byeol Lee, da Yeon Kim, Min Su Lee, Seung Hee LG Display R&D Center Gyeonggi Paju413-779 Korea Republic of Merck Performance Materials Co. Ltd Gyeonggi Pyeongtaek Korea Republic of Affiliate of Merck KGaA Darmstadt Germany Department of Nano Convergence Engineering Jeonbuk National University Jeonbuk Jeonju54896 Korea Republic of Department of Polymer Nano Science and Technology Jeonbuk National University Jeonbuk Jeonju54896 Korea Republic of

Here, we demonstrate world’s first 1 Hz driving fringe-field switching (FFS) LCd via development of low flexoelectric coefficient LCs with high voltage holding ratio (VHr). The evaluation of the 1 Hz driving 13.4-inch FFS LCd laptop panel shows no flicker, and the power consumption is reduced by 83% compared to the 60 Hz driving. We believe this result opens a new chapter of FFS LCds for low-power consumption. © 2023, John Wiley and Sons Inc. All rights reserved.

关键词： Liquid crystal displays

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Individual Intelligent recognition Method Based on Fingerprint Features of radar Emitter

Individual Intelligent Recognition Method Based on Fingerpri...

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2021 CIE International Conference on radar, radar 2021

作者： Liu, Zhongwei Gao, Hongwei Chen, Jie Zhou, dongming Li, Yingchun Sun, Shuyan Xiang, rongrong School of Electronic and Information Engineering Beihang University Beijing China Beijing Institute of Radio Measurement Radar R&d Center Beijing China Beijing Institute of Computer Technology and Application Department of Data Technology and Application Beijing China

ISBN: (纸本)9781665498142

Aiming at the problem of radar emitter individual recognition with unintentional modulation feature, a method of emitter fingerprint identification based on deep learning is proposed. In this method, the deep fingerprint features of radar emitter are extracted by deep Convolutional neural network, and the fingerprint feature library is constructed. Through similarity calculation, the individual recognition results of radar emitter signal are obtained. The results show that the new method can effectively identify both known and unknown emitter individuals. © 2021 IEEE.

关键词： deep learning Fingerprint features Individual identification radar emitter

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Experimental study on thermal expansion property of epoxy mortar in hydraulic structure repairing 3

Experimental study on thermal expansion property of epoxy mo...

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2020 3rd International Conference on Civil, Architecture and engineering Management, ICCAEM 2020

作者： Sun, Yufei He, Jingjing Ma, Lingyun di, Shengjie Zhang, Ying Liu, Jing Xing, ruijiao Northwest Engineering Corporation Limited Power China Xi’an Shaanxi710065 China High Slope and Geological Hazard Research and Management branch National Energy and Hydropower Engineering Technology R&D Center Xi’an Shaanxi710065 China

The thermal expansion property of epoxy mortar has a significant effect on the repair effect. Experiments were carried out to study the thermal expansion coefficient of epoxy mortar by changing the type of curing agent, various sand binder ratios and sand etc. The results show that the curing agent has a remarkable effect on the thermal expansion coefficient of epoxy mortar. When the type and content of curing agent are fixed, the influence of sand binder ratio and sand type on thermal expansion coefficient of epoxy mortar is relatively small. It is an effective way to reduce the thermal expansion coefficient of epoxy mortar with excellent curing agent. The research conclusion can provide a reliable basis for hydraulic concrete repairing. © 2021 IOP Conference Series: Earth and Environmental Science.

关键词： Mortar

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design, Synthesis and Biological Evaluation of Novel Imine-Containing Inhibitors Against the Triple-Mutant Egfr Kinases Based on the Scaffold of Osimertinib

SSRN

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SSrN 2025年

作者： ding, Shi Wu, Yuanyu Li, Bin Wang, Xin ding, Haotian Zhan, Zhenzhen Shen, Jiwei Qi, rui Gao, Ziye Yao, Kai Su, riya Zheng, Hanxue Tang, Zhongyu Liu, Ju Chen, Ye College of Pharmacy of Liaoning University 66 Chongshan Road Huanggu District Shenyang110036 China API Engineering Technology Research Center of Liaoning Province 66 Chongshan Road Huanggu District Shenyang110036 China Small Molecular Targeted Drug R&D Engineering Research Center of Liaoning Province 66 Chongshan Road Huanggu District Shenyang110036 China

A series of novel EGFr inhibitors were designed and synthesized based on the scaffold of osimertinib, the inhibitory activities against the L858r/T790M/C797S mutant EGFr kinase of which were subsequently evaluated. Compounds with the imine fragments showed the highest kinase inhibitory activity and were proved to be reversible inhibitors, which were represented by the compound dd-8 (IC50 = 0.87 nM). Kinase selectivity assay showed the compounds with imine fragments were preferred to inhibit the triple-mutant EGFr kinases rather than other subtypes. In the proliferation inhibition assay against the BaF3-EGFr(L858r/T790M/C797S) cell line, the compound dd-8 also showed strong inhibitory activity (IC50 = 1.11 μM), and the inhibition rate of which reached 98.8% at the concentration of 2 μM. To further elucidate the antitumor mechanism of the compound dd-8, a comprehensive series of experiments were conducted, including apoptosis induction assay, cell cycle arrest assay, Western blot assay, cell migration inhibition assay, liver microsomal stability experiment, and molecular docking analysis. © 2025, The Authors. All rights reserved.

关键词： Cell death

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Geomimetic, Ultrafast, and One-Step Preparation of an N-doped reduced TiO2Porous Layer through an Atmospheric Plasma Spraying Approach for Photocatalytic Tetracycline removal

ACS Applied Engineering Materials

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ACS Applied engineering Materials 2023年第6期1卷 1623-1633页

作者： Fang-Ting Tao Chechia Hu Tzu-Jen Lin Chun-Chieh Wang Jeffrey C. S. Wu Kuo-Lun Tung Department of Chemical Engineering National Taiwan University Daan District Taipei 106 Taiwan Department of Chemical Engineering National Taiwan University of Science and Technology Daan District Taipei 106 Taiwan R&D Center for Membrane Technology Chung Yuan Christian University Chungli District Taoyuan 320 Taiwan Department of Materials Science and Engineering National Taiwan University of Science and Technology Daan District Taipei 106 Taiwan National Synchrotron Radiation Research Center East District Hsinchu 300 Taiwan

A geomimetic, ultrafast, and one-step preparation method for an N-doped reduced TiO2porous layer using the atmospheric plasma spraying (APS) technique is proposed. The secondary gas provided by the APS (H2) is responsible for reducing TiO2, while an acetamide solution stored in the pores of the substrate acted as a nitrogen source for TiO2doping. Inspired by the nature of volcanic eruptions on Earth, we used a geomimetic vapor-induced pore-forming (VI-PF) mechanism to produce porous N-doped TiO2via one-step preparation. We varied the acetamide solution concentration to synthesize different samples (TNX,Xindicates the wt % of acetamide solution) to approach photocatalytic tetracycline (TC, 20 ppm/100 mL) degradation under AM1.5G solar simulator irradiation. When the acetamide solution concentration was 5 wt %, the sample (TN5) showed the highest lattice-nitrogen content, which gave it the highest photocatalytic degradation efficiency (rate constant = 1.71 × 10–2min–1) of TC. Moreover, after 15 rounds of recycling tests, the removal rate and crystalline structure remained stable. In addition to experiments, density functional theory (dFT) calculations are also used to verify the experimental results, and they are also consistent with each other. This work is the first study using the APS technique in a single-step process for nitrogen doping and H2reduction and is a green, cost-effective, time-saving, and promising method for the mass production of porous TiO2.

关键词： degradation Layers Nitrogen Oxides Photocatalysts

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The experimental study on the behavior of Coated Concretes 3

The experimental study on the behavior of Coated Concretes

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2020 3rd International Conference on Civil, Architecture and engineering Management, ICCAEM 2020

作者： Ma, Lingyun He, Jingjing Sun, Yufei di, Shengjie Zhang, Ying Huang, Peng Northwest Engineering Corporation Limited Power China Xi’an Shaanxi710065 China High Slope and Geological Hazard Research and Management branch National Energy and Hydropower Engineering Technology R&D Center Xi’an Shaanxi710065 China

In this paper, different waterproof materials are used to brush the concrete surface, and the influence of different coating materials on the microstructure, porosity, mechanics and durability of concrete is analysed. The results show that the frost resistance of concrete after coating treatment is improved to varying degrees, and the water absorption characteristics are reduced to varying degrees, among which the effect of modified methyl ester coating material is the most significant. The results of micro analysis show that the coating material can form a film on the surface of concrete, improve its surface microstructure and reduce the porosity of concrete. © 2021 IOP Conference Series: Earth and Environmental Science.

关键词： Porosity

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discussion on the structure layout of geo-membrane impervious rockfill dam 4

Discussion on the structure layout of geo-membrane imperviou...

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4th International Symposium on Power Electronics and Control engineering, ISPECE 2021

作者： Lu, Xi Liu, Jing di, Shengjie Ji, Yang Northwest Engineering Corporation Limited Power China Shaanxi Xian710065 China High Slope and Geological Hazard Research and Management Branch National Energy and Hydropower Engineering Technology R&D Center Xi anShaanxi710065 China

ISBN: (数字)9781510650374

ISBN: (纸本)9781510650367

Geosynthetics have a great development prospect in seepage prevention of water retaining buildings because of their reliability and economic superiority. Geomembrane impermeable rockfill dam development at home and abroad also highlights the signs of development. This paper analyzes and summarizes two types of structure layout of geomembrane inclined wall rockfill dam and geomembrane core rockfill dam, which provide some reference for the design of geomembrane impermeable face rockfill dam. © COPYrIGHT SPIE. downloading of the abstract is permitted for personal use only.

关键词： Geomembranes

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