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Immobilization of poly(hexamethylene biguanide) to cellulose acetate- and cellulose-based nanofiber membranes for antibacterial and cytotoxic studies

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Biochemical engineering Journal 2024年 205卷

作者： Dinh Thi My Huong Chi-Yun Wang Pin-Yi Chen Chien Wei Ooi Xue Er Crystal Thew Bing-Lan Liu Chen-Yaw Chiu Shen-Long Tsai Kuei-Hsiang Chen Yu-Kaung Chang Department Chemical Technology and Environment University of Technology and Education the University of Da Nang Da Nang City Viet Nam Department Chemical Engineering/ Graduate School of Biochemical Engineering Ming Chi University of Technology New Taipei City 243303 Taiwan Department Chemical Engineering National Taiwan University of Science and Technology Taipei City 10607 Taiwan International Ph.D. Program in Innovative Technology of Biomedical Engineering and Medical Devices Ming Chi University of Technology New Taipei City 243303 Taiwan Bone and Joint Research Centre Chang Gung Memorial Hospital Taoyuan City 333423 Taiwan Research Center for Intelligent Medical Devices Ming Chi University of Technology New Taipei City 243303 Taiwan Chemical Engineering Department School of Engineering Monash University Malaysia Jalan Lagoon Selatan Bandar Sunway Selangor 47500 Malaysia Advanced Engineering Platform School of Engineering Monash University Malaysia Jalan Lagoon Selatan 47500 Bandar Sunway Selangor Malaysia Department of Applied Chemistry Chaoyang University of Technology Taichung 413310 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Zhongli Dist Taoyuan City 320315 Taiwan

To develop the environmental antibacterial membrane, the physical attachments of poly (hexamethylene biguanide) hydrochloride (PHMB) on the cellulose acetate (CA) and regenerated cellulose (RC) electrospun nanofiber membranes were employed. The immobilization of PHMB increased the antibacterial efficacy ( AE , %) of nanofiber membranes from 65.67% to approximately 86.13% for CA-PHMB and from 35.09% to approximately 100% for RC-PHMB. The results of the chemical and physical characteristics indicate that the degree of deacetylation of CA nanofiber, the surface charge of the nanofiber, and the density of PHMB immobilized onto the nanofiber primarily affect the antibacterial efficacy. The use of mathematical models, such as the Temkin equilibrium model for PHMB immobilization and the Monod-type model for the relationship between antibacterial activity and immobilization density of PHMB provides a deeper understanding of the interactions and kinetics involved. The rapid achievement of ∼100% AE after only 10 min of contact with Escherichia coli ( E. coli ) is a notable finding, indicating the quick and efficient antibacterial action of RC-PHMB nanofiber membranes. Furthermore, maintaining approximately 100% AE after 20 days of storage underscores the long-term stability of PHMB immobilized on RC nanofiber membranes. The findings suggest that RC-PHMB holds great promise as an antibacterial material for biomedical applications, food packaging industries, and filtration or treatment of water.

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Liquid-EM goes viral - visualizing structure and dynamics

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Current opinion in structural biology 2022年 75卷 102426页

作者： Deborah F Kelly Liza-Anastasia DiCecco G M Jonaid William J Dearnaley Michael S Spilman Jennifer L Gray Madeline J Dressel-Dukes Department of Biomedical Engineering Pennsylvania State University University Park PA 16802 USA Center for Structural Oncology Pennsylvania State University University Park PA 16802 USA Materials Research Institute Pennsylvania State University University Park PA 16802 USA. Electronic address: Debkelly@psu.edu. Department of Materials Science and Engineering McMaster University Hamilton ON L8S 4L7 Canada. Electronic address: https://***/LizaDiCecco. Bioinformatics and Genomics Graduate Program Huck Institutes of the Life Sciences Pennsylvania State University University Park PA 16802 USA. Materials Research Institute Pennsylvania State University University Park PA 16802 USA. Electronic address: https://***/PennStateMRI. Direct Electron LP San Diego CA 92128 USA. Electronic address: https://***/DirectElectron. Materials Research Institute Pennsylvania State University University Park PA 16802 USA. Protochips Inc. Morrisville NC 27560 USA. Electronic address: https://***/Protochips.

Liquid-electron microscopy (EM), the room temperature correlate to cryo-EM, is an exciting new technique delivering real-time data of dynamic reactions in solution. Here, we explain how liquid-EM gained popularity in recent years by examining key experiments conducted on viral assemblies and host-pathogen interactions. We describe developing workflows for specimen preparation, data collection, and computing processes that led to the first high-resolution virus structures in a liquid environment. Equally important, we review why liquid-electron tomography may become the next big thing in biomedical research due to its ability to monitor live viruses entering cells within seconds. Taken together, we pose the idea that liquid-EM can serve as a dynamic complement to current cryo-EM methods, inspiring the "real-time revolution" in nanoscale imaging.

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Immunotherapy: engineering an Artificial T‐Cell Stimulating Matrix for Immunotherapy (Adv. Mater. 23/2019)

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Advanced materials 2019年第23期31卷

作者： John W. Hickey Yi Dong Jae Wook Chung Sebastian F. Salathe Hawley C. Pruitt Xiaowei Li Calvin Chang Andrew K. Fraser Catherine A. Bessell Andrew J. Ewald Sharon Gerecht Hai‐Quan Mao Jonathan P. Schneck Department of Biomedical Engineering School of Medicine Baltimore MD 21218 USA Institute for Cell Engineering School of Medicine Baltimore MD 21205 USA Department of Pathology School of Medicine Baltimore MD 21287 USA Translational Tissue Engineering Center Baltimore MD 21287 USA Institute for NanoBioTechnology Baltimore MD 21218 USA Graduate Program in Immunology School of Medicine Baltimore MD 21205 USA Department of Chemical and Biomolecular Engineering Whiting School of Engineering Baltimore MD 21218 USA Department of Biology Krieger School of Arts and Sciences Baltimore MD 21218 USA Department of Materials Science and Engineering Whiting School of Engineering Baltimore MD 21218 USA Department of Cell Biology and Center for Cell Dynamics School of Medicine Baltimore MD 21205 USA Department of Oncology School of Medicine Baltimore MD 21205 USA Physical Sciences‐Oncology Center Baltimore MD 21218 USA Department of Medicine School of Medicine Johns Hopkins University Baltimore MD 21205 USA

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Back Cover: Enhancement of Donor–Acceptor Polymer Bulk Heterojunction Solar Cell Power Conversion Efficiencies by Addition of Au Nanoparticles (Angew. Chem. Int. Ed. 24/2011)

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Angewandte Chemie International Edition 2011年第24期50卷

作者： Dong Hwan Wang Do Youb Kim Kyeong Woo Choi Dr. Jung Hwa Seo Dr. Sang Hyuk Im Prof. Jong Hyeok Park Prof. O Ok Park Prof. Alan J. Heeger Center for Polymers and Organic Solids University of California at Santa Barbara Santa Barbara CA 93106 (USA) Fax: (+1) 805-893-4755 Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (BK 21 Graduate Program) 373-1 Guseong-dong Yuseong-gu Daejeon 305-701 (Republic of Korea) Fax: (+82) 42-350-3910 KRICT-RPFL Global Research Laboratory Advanced Materials Division Korea Research Institute of Chemical Technology Daejeon (Republic of Korea) School of Chemical Engineering and SKKU Advanced Institute of Nanotechnology (SAINT) Sungkyunkwan University Suwon 440-746 (Republic of Korea) Fax: (+82) 31-290-7272 Jong Hyeok Park School of Chemical Engineering and SKKU Advanced Institute of Nanotechnology (SAINT) Sungkyunkwan University Suwon 440-746 (Republic of Korea) Fax: (+82) 31-290-7272 O Ok Park Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (BK 21 Graduate Program) 373-1 Guseong-dong Yuseong-gu Daejeon 305-701 (Republic of Korea) Fax: (+82) 42-350-3910 Alan J. Heeger Center for Polymers and Organic Solids University of California at Santa Barbara Santa Barbara CA 93106 (USA) Fax: (+1) 805-893-4755

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Mixed-linker strategy for suppressing structural flexibility of metal-organic framework membranes for gas separation

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Communications Chemistry 2023年第1期6卷 1-12页

作者： Chung-Kai Chang Yen-Chun Lin Yi-Pei Li Dun-Yen Kang Ting-Rong Ko Tsai-Yu Lin Heng-Liang Wu Hyun Jung Yu Jong Suk Lee Department of Chemical Engineering National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan International Graduate Program of Molecular Science and Technology National Taiwan University (NTU-MST) No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan Center of Atomic Initiative for New Materials National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan Center for Condensed Matter Sciences National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan Department of Chemical and Biomolecular Engineering Sogang University Baekbeom-ro 35 Mapo-gu Seoul 04107 Republic of Korea

Structural flexibility is a critical issue that limits the application of metal-organic framework (MOF) membranes for gas separation. Herein we propose a mixed-linker approach to suppress the structural flexibility of the CAU-10-based (CAU = Christian-Albrechts-University) membranes. Specifically, pure CAU-10-PDC membranes display high separation performance but at the same time are highly unstable for the separation of CO2/CH4. A partial substitution (30 mol.%) of the linker PDC with BDC significantly improves its stability. Such an approach also allows for decreasing the aperture size of MOFs. The optimized CAU-10-PDC-H (70/30) membrane possesses a high separation performance for CO2/CH4(separation factor of 74.2 and CO2permeability of 1,111.1 Barrer under 2 bar of feed pressure at 35°C). A combination of in situ characterization with X-ray diffraction (XRD) and diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, as well as periodic density functional theory (DFT) calculations, unveils the origin of the mixed-linker approach to enhancing the structural stability of the mixed-linker CAU-10-based membranes during the gas permeation tests.

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The ALCHEMI atlas: principal component analysis reveals starburst evolution in NGC 253

arXiv

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arXiv 2024年

作者： Harada, Nanase Meier, David S. Martín, Sergio Muller, Sebastien Sakamoto, Kazushi Saito, Toshiki Gorski, Mark D. Henkel, Christian Tanaka, Kunihiko Mangum, Jeffrey G. Aalto, Susanne Aladro, Rebeca Bouvier, Mathilde Colzi, Laura Emig, Kimberly L. Herrero-Illana, Rubén Huang, Ko-Yun Kohno, Kotaro König, Sabine Nakanishi, Kouichiro Nishimura, Yuri Takano, Shuro Rivilla, Víctor M. Viti, Serena Watanabe, Yoshimasa van der Werf, Paul P. Yoshimura, Yuki National Astronomical Observatory of Japan 2-21-1 Osawa Mitaka Tokyo181-8588 Japan Institute of Astronomy and Astrophysics Academia Sinica 11F of AS/NTU Astronomy-Mathematics Building No.1 Sec. 4 Roosevelt Rd Taipei10617 Taiwan Astronomical Science Program Graduate Institute for Advanced Studies SOKENDAI 2-21-1 Osawa Mitaka Tokyo181-1855 Japan New Mexico Institute of Mining and Technology 801 Leroy Place SocorroNM87801 United States National Radio Astronomy Observatory PO Box O 1003 Lopezville Road SocorroNM87801 United States European Southern Observatory Alonso de Córdova 3107 Vitacura Santiago763-0355 Chile Joint ALMA Observatory Alonso de Córdova 3107 Vitacura Santiago763-0355 Chile Department of Space Earth and Environment Chalmers University of Technology Onsala Space Observatory OnsalaSE-439 92 Sweden Department of Physics and Astronomy Northwestern University EvanstonIL60208 United States Max-Planck-Institut für Radioastronomie Auf dem Hügel 69 Bonn53121 Germany Astronomy Department Faculty of Science King Abdulaziz University P. O. Box 80203 Jeddah21589 Saudi Arabia Department of Physics Faculty of Science and Technology Keio University 3-14-1 Hiyoshi Kanagawa Yokohama223-8522 Japan National Radio Astronomy Observatory 520 Edgemont Road CharlottesvilleVA22903-2475 United States Department of Space Earth and Environment Chalmers University of Technology GöteborgSE-412 96 Sweden Leiden Observatory Leiden University P.O. Box 9513 Leiden2300 RA Netherlands CSIC-INTA Ctra. de Ajalvir Km. 4 Torrejón de Ardoz Madrid28850 Spain Campus UAB Carrer de Magrans BarcelonaE-08193 Spain Institute of Astronomy Graduate School of Science The University of Tokyo 2-21-1 Osawa Mitaka Tokyo181-0015 Japan Department of Astronomy The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-0033 Japan ALMA Project National Astronomical Observatory of Japan 2-21-1 Osawa Mitaka Tokyo181-8588 Japan Department of Physic

Molecular lines are powerful diagnostics of the physical and chemical properties of the interstellar medium (ISM). These ISM properties, which affect future star formation, are expected to differ in starburst galaxies from those of more quiescent galaxies. We investigate the ISM properties in the central molecular zone of the nearby starburst galaxy NGC 253 using the ultra-wide millimeter spectral scan survey from the ALMA Large program ALCHEMI. We present an atlas of velocity-integrated images at a 1′′. 6 resolution of 148 unblended transitions from 44 species, including the first extragalactic detection of HCNH+ and the first interferometric images of C3H+, NO, HCS+. We conduct a principal component analysis (PCA) on these images to extract correlated chemical species and to identify key groups of diagnostic transitions. To the best of our knowledge, our dataset is currently the largest astronomical set of molecular lines to which PCA has been applied. The PCA can categorize transitions coming from different physical components in NGC 253 such as i) young starburst tracers characterized by high-excitation transitions of HC3N and complex organic molecules (COMs) versus tracers of on-going star formation (radio recombination lines) and high-excitation transitions of CCH and CN tracing PDRs, ii) tracers of cloud-collision-induced shocks (low-excitation transitions of CH3OH, HNCO, HOCO+, and OCS) versus shocks from star-formation-induced outflows (high-excitation transitions of SiO), as well as iii) outflows showing emission from HOC+, CCH, H3O+, CO isotopologues, HCN, HCO+, CS, and CN. Our findings show these intensities vary with galactic dynamics, star formation activities, and stellar feedback. © 2024, CC BY.

关键词： Principal component analysis

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Corrigendum to "Development and functional evaluation of a hyaluronic acid coated nano-formulation with kaempferol as a novel intra-articular agent for knee osteoarthritis treatment"[ Biomed. Pharmacother. 175(2024) 116717]

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Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie 2024年 177卷 116944页

作者： Ching-Yu Lee Yu-Chu Chang Kai-Chiang Yang Yung-Fang Lin Alexander T H Wu Ching-Li Tseng International Ph.D. Program in Cell Therapy and Regenerative Medicine College of Medicine Taipei Medical University Taipei 110301 Taiwan Department of Orthopedics Taipei Medical University Hospital Taipei 110301 Taiwan Department of Orthopaedics School of Medicine College of Medicine Taipei Medical University Taipei 110301 Taiwan Orthopedic Research Center Taipei Medical University Hospital Taipei 110301 Taiwan. Department of Biochemistry and Molecular Cell Biology School of Medicine College of Medicine Taipei Medical University Taipei 110301 Taiwan. School of Dental Technology College of Oral Medicine Taipei Medical University Taipei 110301 Taiwan. Graduate Institute of Biomedical Materials and Tissue Engineering College of Biomedical Engineering Taipei Medical University Taipei 110301 Taiwan International Ph.D. Program in Biomedical Engineering College of Biomedical Engineering Taipei Medical University Taipei 110301 Taiwan. The Ph.D. Program for Translational Medicine College of Medical Science and Technology Taipei Medical University Taipei 110301 Taiwan Clinical Research Center Taipei Medical University Hospital Taipei Medical University Taipei 110301 Taiwan. Electronic address: chaw1211@tmu.edu.tw. International Ph.D. Program in Biomedical Engineering College of Biomedical Engineering Taipei Medical University Taipei 110301 Taiwan. Electronic address: chingli@tmu.edu.tw.

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CORROSION RESISTANCE OF ALUMINUM ALLOY 5083 IN MARINE ENVIRONMENTS

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Journal of the American Society for Naval Engineers 1961年第3期73卷 545-547页

作者： AILOR, W.H. LINDBERG, R.I. William H. Ailor has been a member of the Chemical Metallurgy Section of the Metallurgical Research Division Reynolds Metals Company for six years. Educated in chemistry and chemical engineering at the University of Tampa Florida and North Carolina State College. He is Task Force chairman of the ASTM B-3/V1 1957 20-Year Test Program for the atmospheric corrosion of metals secretary of ASTM Committee B-3 and is a member of the Electrochemical Society and the National Association of Corrosion Engineers. He formerly taught diesel engineering at North Carolina State College. He is a lieutenant commander in the Naval Reserve. During World War II he served as engineering officer afloat and later as commanding officer of USS PC 616 and USS Belet (APD-109). Recalled to service in the Korean conflict he served 17 months as executive officer of the USS Robinson (DD 562). He is in the active reserve and formerly was commanding officer of Surface Division 6–42 in Jacksonville Fla. Currently he is training officer of MSTS Co. 5-1 in Richmond Va. R. I. Lindberg is a corrosion engineer in the engineering services department of Reynolds Metals Company. Author of several papers on corrosion in marine environments Mr. Lindberg is a member of the National Association of Corrosion Engineers. Prior to joining Reynolds in 1959 Mr. Lindberg was director of corrosion research for A. M. Byers Co. Pittsbugh Pa. Mr. Lindberg graduated from the University of Cincinnati in 1939 with B. S. and Ch. E. degrees. He took post graduate work at Purdue University receiving a Master of Science degree in 1942.

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Corrigendum for “Review—Contemporary Progresses in Carbon-Based Electrode Material in Li-S Batteries” J. Electrochem. Soc. 169, 020530 2022

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Journal of The Electrochemical Society 2023年第11期170卷 119001-119001页

作者： Utkarsh Chadha Preetam Bhardwaj Sanjeevikumar Padmanaban Reyna Michelle Suneel Kevin Milton Neha Subair Akshat Pandey Mayank Khanna Divyansh Srivastava Rhea Mary Mathew Senthil Kumaran Selvaraj Murali Banavoth Prashant Sonar Badrish Badoni Nalamala Srinivasa Rao S. Gopa Kumar Arun Kumar Ray Amit Kumar Department of Manufacturing Engineering School of Mechanical Engineering (SMEC) Vellore Institute of Technology (VIT) Vellore Tamilnadu 632014 India Centre for Nanotechnology Research (CNR) School of Electronics Engineering (SENSE) Vellore Institute of Technology Vellore 632014 Tamil Nadu 632014 India Center for Electric Vehicles and Power Department of Electrical and Electronics Engineering Anna University Chennai-600025 India & Department of Energy Technology Aalborg University Esbjerg Denmark School of Chemical Engineering (SCHEME) Vellore Institute of Technology (VIT) Vellore Tamilnadu 632014 India Solar Cells and Photonics Research Laboratory School of Chemistry University of Hyderabad Hyderabad Telangana 500046 India Centre for Materials Science School of Chemistry and Physics Queensland University of Technology Brisbane QLD 4001 Australia Department of Physics Bal Ganga Degree College Sendul Kemar Tehri Garhwal Uttrakhand 249155 India Department of Chemistry Government Degree College Cumbum Prakasam Andhra Pradesh 523333 India Department of Electrical and Electronics Engineering Rohini College of Engineering and Technology Palkulam Anjugramam Tamilnadu 629401 India Department of Mechanical Engineering Hindu College of Engineering Sonipat Haryana-131001 India Department of Physics Radhey Hari Government Post Graduate College Kashipur Kumaun University Nainital Uttarakhand 244713 India

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Macromol. Biosci. 2/2011

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Macromolecular Bioscience 2011年第2期11卷

作者： Tomohiro Hiraishi Eriko Masuda Daisuke Miyamoto Naoki Kanayama Hideki Abe Mizuo Maeda Bioengineering Laboratory RIKEN Advanced Science Institute 2‐1 Hirosawa Wako‐shi Saitama 351‐0198 Japan Department of Innovative and Engineered Materials Tokyo Institute of Technology 4259 Nagatsuta Midori‐ku Yokohama Kanagawa 226‐8502 Japan Present address: Asahi Kasei Medical Co. Ltd. 6‐2700 Asahi‐cho Nobeoka‐shi Miyazaki 882‐0847 Japan Present address: Graduate School of Pure and Applied Science University of Tsukuba 1‐1‐1 Ten‐noudai Tsukuba‐shi Ibaraki 305‐8573 Japan Chemical Analysis Team RIKEN Advanced Science Institute 2‐1 Hirosawa Wako‐shi Saitama 351‐0198 Japan Present address: Bioplastic Research Team Biomass Utilization Research Group RIKEN Biomass Engineering Program 2‐1 Hirosawa Wako‐shi Saitama 351‐0198 Japan

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