检索结果-内蒙古大学图书馆

2021 3rd International Conference on Polymer Synthesis and Application, ICPSA 2021

作者： Li, Zengling Chen, Nan Qu, Liangti Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science Ministry of Education of China School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing100081 China Key Laboratory of Organic Optoelectronics and Molecular Engineering Ministry of Education Department of Chemistry Tsinghua University Beijing100084 China

Noise pollution, which is no less harmful than air, water and soil pollution, is becoming an environmental shortcoming that cannot be ignored. Scientists are also seeking various solutions to work on reducing noise pollution. In this work, porous graphene aerogel (FD-GA) and porous graphene oxide aerogel (FD-GOA) prepared by foaming combined with freeze-drying are reported as acoustic-absorbing materials. The effects of thickness and degree of compression on the acoustic-absorbing performance of FD-GA and FD-GOA in the 1000- 6000 Hz range, where human ear hearing is sensitive, were investigated, respectively. FD-GA was found to have significantly higher acoustic absorption performance with a peak absorption of 96.7%. The present work provides a simple and straightforward strategy for the synthesis of the acoustic-absorbing material. Key words: freeze-drying, graphene aerogel, acousticabsorbing. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Noise pollution

来源：评论

学校读者我要写书评

暂无评论

Recent advances in self-immobilizing fluorescent probes for in vivo imaging

Smart Molecules

引用

Smart Molecules 2024年第3期2卷 39-52页

作者： Yong Zhang Xuemei Lv Yafu Wang Xueqian Chen Jinchao Zhang Dongdong Su State Key Laboratory of New Pharmaceutical Preparations and Excipients Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of EducationCollege of Chemistry&Materials ScienceChemical Biology Key Laboratory of Hebei ProvinceHebei UniversityBaodingChina School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiangHenanChina Department of Chemistry Center of Excellence for Environmental Safety and Biological EffectsBeijing Key Laboratory for Green Catalysis and SeparationBeijing University of TechnologyBeijingChina

In situ precise detection of bioactive molecules with high sensitivity and spatiotemporal resolution is essential for studying physiological events and disease *** utilization of versatile fluorescent probes in fluorescence imaging offers a powerful tool for in vivo imaging of biomarkers closely associated with pathological ***,the dynamic behavior leading to rapid clearance of small molecule probes from regions of interest severely compromises their potential for precise ***,self-immobilizing fluorescent probes that selectively recognize diseased tissues while improving in situ retention and enrichment enable accurate high-fidelity fluorescence *** this review,we aim to summarize the strategies employed for recent advances in the performance and precision of in vivo fluorescence imaging using self-immobilizing ***,we discuss the prospects and potential challenges associated with selfimmobilizing fluorescent probes to promote further development and application of more delicate fluorescent probes.

关键词： biomarkers fluorescent probes in situ precise imaging self-immobilizing

来源：评论

学校读者我要写书评

暂无评论

Exploring Environmentally Friendly Corrosion Inhibitors: Insights from Natural and Biomass Residue-Derived Compounds

SSRN

引用

SSRN 2024年

作者： Othman, Norinsan Kamil Mohammed, Naba Jasim Yusop, Muhammed Rahimi Al-Gburi, Ahmed Jamal Abdullah Materials Science Program Department of Applied Physics Faculty of Science and Technology University Kebangsaan Malaysia Selangor Bangi43600 Malaysia Faculty of Science and Technology School of Chemical Sciences and Food Technology University Kepangsaan Malaysia Selangor Bangi43600 Malaysia Faculty of Electronics and Computer Engineering Universiti Teknikal Malaysia Melaka Hang Tuah Jaya Melaka Durian Tunggal76100 Malaysia

In this investigation, we explored the corrosive effects of date palm seed extracted from natural sources and biomass residues on mild steel in a solution of 0.5 M hydrochloric acid (HCl), employing a combination of experimental and theoretical approaches. Our objective was to scrutinize the interaction of the inhibitor with the metal surface, analyze experimental data, and elucidate how the structural characteristics of the inhibitors influence the corrosion process. The experimental results indicated that as the immersion time and temperature increased, the inhibitory effectiveness declined. Notably, the highest level of inhibition occurred when the concentration of date palm seed extract (DPSE) reached 1100 ppm, showcasing peak inhibitory effects of 95.8% and 97.8% through potentiodynamic polarization and electrochemical impedance spectroscopy techniques, respectively. Additionally, an analysis using X-ray diffraction (XRD) was conducted to scrutinize the chemical composition of the mild steel's surface. The adsorption data were evaluated using adsorption isotherms, revealing that DPSE adhered to the Langmuir adsorption isotherm on the mild steel surface. The Langmuir model exhibited the highest linear regression coefficient value and a slope close to unity. The Gibbs free energy () values suggested that the protection afforded by DPSE involved physical and spontaneous absorption. Examination of the results pertaining to the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) indicated that the carboxyl (COOH) group and the C=C bond were the principal regions exhibiting elevated electron acceptance activity. These components were found to be crucial in the adsorption process on the surface of iron (Fe). © 2024, The Authors. All rights reserved.

关键词： Electrochemical impedance spectroscopy

来源：评论

学校读者我要写书评

暂无评论

Hollow semiconductor photocatalysts for solar energy conversion

Advanced Powder Materials

引用

Advanced Powder materials 2022年第2期1卷 84-102页

作者： Bin Fang Zipeng Xing Dandan Sun Zhenzi Li Wei Zhou Department of Environmental Science School of Chemistry and Materials ScienceKey Laboratory of Functional Inorganic Material ChemistryMinistry of EducationHeilongjiang UniversityHarbin 150080China Shandong Provincial Key Laboratory of Molecular Engineering School of Chemistry and Chemical EngineeringQilu University of Technology(Shandong Academy of Sciences)Jinan 250353China

The development of high-efficient photocatalysts plays an important role in the sustainable utilization of solar *** nanostructured photocatalysts are vital for solar light utilization and charge carrier separation in photocatalytic ***,the construction of hollow semiconductor photocatalysts is a promising strategy for preparing novel high-efficient *** paper reviews common hollow semiconductor nanomaterials,such as oxides,sulfides,nitrides,C_(3)N_(4),MOFs,and their composite *** characteristics of hollow-structure photocatalysts,the application of solar energy conversion,and their understanding of the photocatalytic mechanism are also *** addition,future challenges will be focused on designing and majorizing broadband response hollow-structure photocatalysts to further enhance solar energy *** semiconductor photocatalysts will have potential applications in the natural environment,and these synthesized strategies can also provide new possibilities for synthesizing other high-performance semiconductor photocatalysts.

关键词： Photocatalysis Hollow structure Semiconductor Nanomaterial Solar energy conversion

来源：评论

学校读者我要写书评

暂无评论

Construction of dual Z-scheme Ag3VO4–BiVO4/InVO4 photocatalysts using vanadium source from spent catalysts for contaminated water treatment and bacterial inactivation

引用

Chemosphere 2024年 363卷 142746页

作者： Lee, Kuen-Chan Hsu, Shih-Chieh Huang, Jen-Hsien Wang, Kuan-Syun Pang, Wei Kong Hu, Chih-Wei Jiang, Yi-Jhen Cho, Er-Chieh Weng, Huei Chu Liu, Ting-Yu Department of Science Education National Taipei University of Education No. 134 Sec. 2 Heping E. Road Da-an District Taipei City106 Taiwan PhD Program in Medical Neuroscience College of Medical Science and Technology Taipei Medical University 250 Wuxing Street Taipei City110 Taiwan Department of Chemical and Materials Engineering Tamkang University No. 151 Yingzhuan Road Tamsui District New Taipei City25137 Taiwan Department of Green Material Technology Green Technology Research Institute CPC Corporation No.2 Zuonan Rd. Nanzi District Kaohsiung City81126 Taiwan Department of Materials Engineering Ming Chi University of Technology New Taipei City243303 Taiwan Faculty of Engineering Institute for Superconducting & Electronic Materials University of Wollongong WollongongNSW Australia National Synchrotron Radiation Research Center 101 Hsin-Ann Road Hsinchu Science Park Hsinchu30076 Taiwan School of Pharmacy College of Pharmacy Taipei Medical University 250 Wuxing Street Taipei City110 Taiwan Department of Mechanical Engineering Chung Yuan Christian University No. 200 Chungpei Road Chungli District Taoyuan City32023 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Taoyuan City32003 Taiwan College of Engineering & Center for Sustainability and Energy Technologies Chang Gung University Taoyuan33302 Taiwan

Vanadate-based photocatalysts have recently attracted substantial attention owing to their outstanding photocatalytic activity for degrading organic pollutants and generating energy via photocatalytic processes. However, the relatively high price of vanadium has hindered the development of vanadate-based photocatalysts for various applications. Spent catalysts obtained from oil refineries typically contain a significant quantity of vanadium, making them valuable for recovery and utilization as precursors for the production of high-value-added photocatalysts. In this study, we transformed the V present in spent catalysts produced by the petrochemical industry into ternary vanadate-based photocatalysts [BiVO4/InVO4/Ag3VO4 (BVO/IVO/AVO, respectively)] designed for water remediation. The ternary composites revealed an enhanced photocatalytic capability, which was 1.42 and 5.1 times higher than those of the binary BVO/IVO and pristine AVO due to the facilitated charge separation. The ternary photocatalysts not only effectively treated wastewater containing various organic dyes, such as methylene blue (MB), rhodamine 6G (R6G), and brilliant green (BG), but also exhibited remarkable photocatalytic performance in the degradation of antibiotics, reduction of Cr(VI), and bacterial inactivation. This paper proposes a feasible route for recycling industrial waste as a source of vanadium to produce highly efficient vanadate-based photocatalysts. © 2024 Elsevier Ltd

关键词： Water pollution

来源：评论

学校读者我要写书评

暂无评论

Topological Rigidity and Non-Abelian defect junctions in chiral nematic systems with effective biaxial symmetry

arXiv

引用

arXiv 2024年

作者： Wu, Jin-Sheng Valenzuela, Roberto Abril Bowick, Mark J. Smalyukh, Ivan I. Department of Physics and Chemical Physics Program University of Colorado Boulder United States Department of Physics University of California Santa Barbara United States Kavli Institute for Theoretical Physics University of California Santa Barbara United States French American Center for Theoretical Science CNRS KITP Santa Barbara United States International Institute for Sustainability with Knotted Chiral Meta Matter Japan Department of Electrical Computer and Energy Engineering Materials Science and Engineering Program and Soft Materials Research Center University of Colorado Boulder United States Renewable and Sustainable Energy Institute National Renewable Energy Laboratory University of Colorado Boulder United States

We study topologically stable defect structures in systems where the defect line classification in three dimensions and associated algebra of interactions (the fundamental group) are governed by the non-Abelian 8-element group, the quaternions Q8. The non-Abelian character of the defect algebra leads to a topological rigidity of bound defect pairs, and trivalent junctions which are the building blocks of multi-junction trivalent networks. We realize such structures laboratory chiral nematics and analyze their behavior analytically, along with numerical modeling © 2024, CC BY.

关键词： Rigidity

来源：评论

学校读者我要写书评

暂无评论

Improving iPSC Differentiation Using a Nanodot Platform

引用

ACS Applied materials and Interfaces 2024年第28期16卷 36030-36046页

作者： Chiew, Men Yee Wang, Erick Lan, Kuan-Chun Lin, Yan-Ren Hsueh, Yu-Huan Tu, Yuan-Kun Liu, Chu-Feng Chen, Po-Chun Lu, Huai-En Chen, Wen Liang Center for Regenerative Medicine and Cellular Therapy National Yang Ming Chiao Tung University Hsinchu300 Taiwan Department of Biological Science and Technology National Yang Ming Chiao Tung University Hsinchu300 Taiwan College of Biological Science and Technology Industrial Ph. D. Program National Yang Ming Chiao Tung University Hsinchu300 Taiwan Kyoto University Kyoto606-8397 Japan Department of Emergency and Critical Care Medicine Changhua Christian Hospital Changhua500 Taiwan Department of Post Baccalaureate Medicine College of Medicine National Chung Hsing University Taichung402 Taiwan School of Medicine Kaohsiung Medical University Kaohsiung807 Taiwan School of Medicine Chung Shan Medical University Taichung402 Taiwan College of Biological Science and Technology National Yang Ming Chiao Tung University Hsinchu300 Taiwan Department of Orthopedic Surgery E-Da Hospital I-Shou University Kaohsiung824 Taiwan Emergency Medicine Department Kaohsiung Chang Gung Memorial Hospital Kaohsiung833 Taiwan Ph. D. Degree Program of Biomedical Science and Engineering National Yang Ming Chiao Tung University Hsinchu300 Taiwan Institute of Materials Science and Engineering National Taipei University of Technology Taipei106 Taiwan Institute of Biochemistry and Molecular Biology National Yang Ming Chiao Tung University Hsinchu300 Taiwan Bioresource Collection and Research Center Food Industry Research and Development Institute Hsinchu City300 Taiwan

Differentiation of induced pluripotent stem cells (iPSCs) is an extremely complex process that has proven difficult to study. In this research, we utilized nanotopography to elucidate details regarding iPSC differentiation by developing a nanodot platform consisting of nanodot arrays of increasing diameter. Subjecting iPSCs cultured on the nanodot platform to a cardiomyocyte (CM) differentiation protocol revealed several significant gene expression profiles that were associated with poor differentiation. The observed expression trends were used to select existing small-molecule drugs capable of modulating differentiation efficiency. BRD K98 was repurposed to inhibit CM differentiation, while iPSCs treated with NSC-663284, carmofur, and KPT-330 all exhibited significant increases in not only CM marker expression but also spontaneous beating, suggesting improved CM differentiation. In addition, quantitative polymerase chain reaction was performed to determine the gene regulation responsible for modulating differentiation efficiency. Multiple genes involved in extracellular matrix remodeling were correlated with a CM differentiation efficiency, while genes involved in the cell cycle exhibited contrasting expression trends that warrant further studies. The results suggest that expression profiles determined via short time-series expression miner analysis of nanodot-cultured iPSC differentiation can not only reveal drugs capable of enhancing differentiation efficiency but also highlight crucial sets of genes related to processes such as extracellular matrix remodeling and the cell cycle that can be targeted for further investigation. Our findings confirm that the nanodot platform can be used to reveal complex mechanisms behind iPSC differentiation and could be an indispensable tool for optimizing iPSC technology for clinical applications. © 2024 The Authors. Published by American chemical Society.

关键词： Efficiency

来源：评论

学校读者我要写书评

暂无评论

Scaling Ipsc Production in Different 3d Platforms in Suspension Culture for Their Use in Allogeneic Regenerative Therapies

SSRN

引用

SSRN 2024年

作者： Freire-Flores, Danton Kawles, Nyna Caviedes, Pablo Andrews, Barbara A. Asenjo, Juan A. Centre for Biotechnology and Bioengineering Faculty of Physical and Mathematical Sciences Universidad de Chile Beaucheff 851 Santiago8370448 Chile Department of Chemical Engineering Biotechnology and Materials Universidad de Chile Beaucheff 851 Santiago8370448 Chile Program of Molecular and Clinical Pharmacology ICBM Faculty of Medicine University of Chile Independencia 1027 Santiago8379482 Chile

Human induced pluripotent stem cells (iPSCs) exhibit significant potential for advancing regenerative medical treatments due to their pluripotency and proliferation capacity. However, the large-scale production required for allogeneic therapies necessitates efficient and scalable culture systems. Conventional 2D culture techniques are inadequate for this, driving interest for innovative bioreactor-based expansion techniques such as microcarrier-based or suspension aggregate cultures. In this study, we compare iPSC expansion and quality in microcarrier and aggregate cultures in spinner flasks, aiming to ascertain which 3D growth configuration yields superior cell mass while maintaining cellular product quality. We demonstrated comparable expansion of iPSCs on Cytodex 1 and Cultisphere G microcarriers, as well as in aggregates by day 6 in culture, achieving a final cell density of 2.6*10^6 cells/ml and 5.67*10^6 cells/ml on microcarriers respectively, and 9.76*10^6 cells/ml in aggregates, yielding 4- and 9-fold expansion on microcarriers and 15-fold in aggregates. The efficiency in the recovery of iPSCs in single-cell form was over 91.5% for all cultures. iPSCs cultured on microcarriers and as aggregates exhibit OCT3/4, SSEA4, TRA-1-60, and SOX2 pluripotency marker expression, as well as retention of differentiation potential into three germinal layers. This work supports the utilization of microcarriers and aggregates as an efficient 3D expansion platform for suspension cultures of iPSCs, in the quest to further scale production in larger stirred-tank bioreactor systems. © 2024, The Authors. All rights reserved.

关键词： Tanks (containers)

来源：评论

学校读者我要写书评

暂无评论

Optical assembly of nanostructures mediated by surface roughness

arXiv

引用

arXiv 2023年

作者： Felsted, Robert G. Chun, Jaehun Schenter, Gregory K. Bard, Alexander B. Xia, Xiaojing Pauzauskie, Peter J. Department of Chemistry University of Washington SeattleWA98195 United States Physical Sciences Division Physical and Computational Sciences Directorate Pacific Northwest National Laboratory RichlandWA99352 United States Levich Institute Department of Chemical Engineering CUNY City College New YorkNY10031 United States Department of Molecular Engineering and Science University of Washington SeattleWA98195 United States Materials Science and Engineering Department University of Washington SeattleWA98195 United States

Rigorous understanding of the self-assembly of colloidal nanocrystals is crucial to the development of tailored nanostructured materials. Despite extensive studies, a mechanistic understanding of self-assembly under non-equilibrium driven by an external field remains an ongoing challenge. We demonstrate self-assembly by optical tweezers imposing an external attractive field for cubic-phase sodium yttrium fluoride nanocrystals. We show that surface roughness of the nanocrystals is a decisive factor for contact leading to assembly between the nanocrystals, manifested by the roughness-dependent hydrodynamic resistivity. This provides direct evidence that dynamics are equally important to energetics in understanding self-assembly. These results have implications in a wide variety of different fields, such as in understanding the factors that mediate oriented attachment-based crystal growth or in interpreting the structure of binding sites on viruses. Copyright © 2023, The Authors. All rights reserved.

关键词： Nanocrystals

来源：评论

学校读者我要写书评

暂无评论

Nanoslot-Induced Ultrastrong Phonon-Photon and Phonon-Phonon Coupling in Hybrid Organic-Inorganic Perovskites 16

Nanoslot-Induced Ultrastrong Phonon-Photon and Phonon-Phonon...

引用

16th Pacific Rim Conference on Lasers and Electro-Optics, CLEO-PR 2024

作者： Kim, Dasom Hou, Jin Lee, Geon Agrawal, Ayush Kim, Sunghwan Zhang, Hao Bao, Di Baydin, Andrey Wu, Wenjing Tay, Fuyang Huang, Shengxi Hagenmüller, Daivd Chia, Elbert E. M. Kim, Dai-Sik Seo, Minah Mohite, Aditya D. Kono, Junichiro Applied Physics Graduate Program Smalley-Curl Institute Rice University HoustonTX77005 United States Department of Electrical and Computer Engineering Rice University HoustonTX77005 United States Department of Materials Science and NanoEngineering Rice University HoustonTX77005 United States Sensor System Research Center Korea Institute of Science and Technology Seoul02792 Korea Republic of Department of Physics and Astronomy Seoul National University Seoul08826 Korea Republic of Department of Chemical and Biomolecular Engineering Rice University HoustonTX77005 United States Ulsan44919 Korea Republic of Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University 637371 Singapore Smalley-Curl Institute Rice University HoustonTX77005 United States Université de Strasbourg Cnrs Strasbourg67000 France KU-KIST Graduate School of Converging Science and Technology Korea University Seoul02841 Korea Republic of Department of Physics and Astronomy Rice University HoustonTX77005 United States

Methods for harnessing vibrational states are desired for phonon-based technologies. We realized ultrastrong coupling of two phonon modes in perovskite materials induced by ultrastrong coupling with a common photonic ... 详细信息

ISBN: (纸本)9798350372076

关键词： Organic-inorganic materials

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：