检索结果-内蒙古大学图书馆

Nanoarchitectonics of europium vanadate nanoparticles decorated carbon nanofibers for electrochemical detection of fungicide in fruits

引用

Journal of the Taiwan Institute of Chemical Engineers 2024年 161卷

作者： Huang, Song-Jeng Gokulkumar, Kumar Govindasamy, Mani Albaqami, Munirah D. Wabaidur, Saikh Mohammad Department of Mechanical Engineering National Taiwan University of Science and Technology Taipei City106335 Taiwan Department of Research and Innovation Saveetha School of Engineering SIMATS Chennai602105 India International Ph.D. Program in Innovative Technology of Biomedical Engineering and Medical Devices Ming Chi University of Technology New Taipei City243303 Taiwan Department of Chemistry College of Science King Saud University Riyadh11451 Saudi Arabia

Background: Fungicides, like carbendazim, have effects on male fertility. There have been sufficient studies conducted on certain chemical compounds to indicate a selective action at the epididymis level. To prevent contamination of food products with fungicides, most of the governments have established rules for the use of fungicides. However, even though this type of fungicide is primarily used in agriculture. More probably, it's contaminated with fruits and vegetables. In particular, carbendazim is one of the major fungicides in the agricultural usage Methods: This research work developed a europium vanadate (EuVO4) nanoparticle decorated carbon nanofiber (CNF) composites by hydrothermal-sonochemical approach. Based on this composite, Carbendazim sensing is developed through electrochemical oxidation based on EuVO4/f-CNF modified Glassy Carbon Electrode (GCE). By combining EuVO4 and f-CNF with the GCE, carbendazim detection can be highly effective. GCEs are rigid, making them ideal for depositing EuVO4/f-CNF, while their expansive surface area makes it possible to immobilize a greater amount of EuVO4/f-CNF, which could increase the Carbendazim sensing ability of the resulting modified GCEs with EuVO4/f-CNF. Main Findings: : The carbendazim sensing was actualized by the electrocatalytic oxidation of carbendazim on the composite modified electrode, and it is demonstrating a linear range of 0.125 to 23.875 – 33.81 to 131.375 µM with a remarkably limit of detection of 0.00612 µM. The EuVO4/f-CNF /GCE also showcased an excellent degree of stability, retaining 96.5 % of its initial activity even after 30 days. This research highlights the potential of EuVO4/f-CNF modified GCEs as robust, and efficient platform for the carbendazim detection under electrochemical approach. © 2024 Taiwan Institute of Chemical Engineers

关键词： Carbon nanofibers

来源：评论

学校读者我要写书评

暂无评论

Gradient Boosting Model for Water Quality Forecasting

Gradient Boosting Model for Water Quality Forecasting

引用

International Conference on Data Analytics and Management, ICDAM 2023

作者： Panda, Parnani Banerjee, Sushovan Mishra, Sushruta Shashidhar, Chitra de Albuquerque, Victor Hugo C. Reis, Marcello Singh, Pooja Kalinga Institute of Industrial Technology Deemed to Be University Bhubaneswar India Department of Commerce and Management Seshadripuram College Bengaluru560020 India Graduate Program in Telecommunication Engineering Federal Institute of Education Science and Technology of Ceará Fortaleza Brazil Federal University of Ceará Ceará Brazil Fort Lauderdale United States Lead of the Biomedical Data Analytics Research Group Bengaluru India Federal Institute of Ceará Ceará Brazil Meteora Consultoria Fortaleza Brazil Galgotias University Uttar Pradesh Greater Noida India

ISBN: (纸本)9789819965465

The aim of our study is to evaluate the quality of water using machine learning methods. Potability is a subjective word that quantifies water quality. In this research, a variety of metrics were used to measure general potability of the water. The prescribed elements are applied like variable matrix to denote water quality. The article used three different classification methods, with success rates ranging from 84.27 to 93.16%, to predict the water quality class including ensemble approach like Random Forest (RFC), SVM for classification (SVC), as well as XGBoost. The Gradient Boosting approach, out of all the ones used, received the greatest accuracy (93.16%), precision (96.3%), recall (92.76%) and F-score (94.54%). Also, it achieved the least computational delay with a mean latency of 1.34 s. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd 2024.

关键词： Water quality

来源：评论

学校读者我要写书评

暂无评论

Reduction of Reflected Light on Fluorescence Emission for Indocyanine Green

引用

Journal of engineering and science in Medical Diagnostics and Therapy 2022年第1期5卷 011004页

作者： Kwon, So Yoon Yoon, Ki-Cheol Kim, Kwang Gi Interdisciplinary Program in Bioengineering Seoul National University Seoul08826 Korea Republic of Medical Devices R&D Center Gachon University Gil Medical Center 774 beon-gil Namdong-daero Namdong-gu Incheon21565 Korea Republic of Department of Biomedical Engineering College of Medicine Gachon University 38-13 Dokjom-ro 3 Namdong-gu Incheon21565 Korea Republic of Department of Biomedical Engineering College of Health Science Gachon University 191 Hambakmoero Yeonsu-gu Incheon21936 Korea Republic of Gachon University 38-13 3 Dokjom-ro Namdong-gu Incheon21565 Korea Republic of

Inside the brain tumor, the blood vessels are intricately composed, and the tumors and blood vessels are similar in color. Therefore, when observing tumors and blood vessels with the naked eye or a surgical microscope, it is difficult to distinguish between tumors and blood vessels. Fluorescence staining with indocyanine green (ICG) is performed to distinguish between brain tumors and blood vessels using a surgical microscope. However, when observing the blood circulation state of a tumor or blood vessel through a surgical microscope, light reflection occurs from the camera. In the process of observing the state of the blood vessel, due to the occurrence of light reflection, an obstruction phenomenon in which the observation field is blocked by the blood vessel of the object to be observed occurs. Therefore, it is difficult to diagnose the vascular condition. In this experiment, the 780 nm light-emitting diode (LED) was irradiated to the ICG phantom, and then, when the fluorescence expression image was observed, the polarizing filter such as circular polarized light (CPL) filter and linear polarized light (LPL) filter was inserted into the camera, and the reflected light was reduced. Therefore, it is possible to reduce the reflected light from the fluorescence expression image by using a polarizing filter, and it is expected to be applicable to surgery and diagnostic fields of cancer such as surgery. Copyright © 2022 by ASME.

关键词： Microscopes

来源：评论

学校读者我要写书评

暂无评论

Biosynthesis of silver nanoparticles as a reliable alternative for the catalytic degradation of organic dyes and antibacterial applications

引用

Current Research in Green and Sustainable Chemistry 2024年 8卷

作者： Hijazi, Baraa U. Faraj, Marwa Mhanna, Rami El-Dakdouki, Mohammad H. Department of Chemistry Faculty of Science Beirut Arab University P.O. Box 11-5020 Riad El Solh Beirut 11072809 Lebanon Biomedical Engineering Program Maroun Semaan Faculty of Engineering and Architecture American University of Beirut Beirut 1107 2020 Lebanon

Water bodies are being threatened continuously by various anthropogenic pollutants such as organic dyes and bacteria which led to scarcity of fresh water suitable for drinking and irrigation. Therefore, different water treatment methods have been implemented before the discharge of contaminated wastewater into water bodies. In this report, green-synthesized silver nanoparticles (AgNPs) were evaluated in the degradation of organic dyes and bacterial decontamination. The S. costus root aqueous extract was used as an environmentally benign reducing agent in the biosynthesis of AgNPs. The synthetic procedure was optimized in terms of different parameters, and several analytical techniques were used to thoroughly characterize the prepared nanocomposites including TEM, SEM, EDX, DLS, XRD, FTIR, UV/Vis, photoluminescence, and TGA. The nanoparticles were spherical, monodisperse, colloidally and thermally stable, and crystalline in nature. The efficiency of the biogenic AgNPs as catalysts for the degradation of organic dyes was evaluated against six structurally diverse dyes. These included methylene blue, phenol red, methyl orange, Congo red, orange G and safranin O. Moreover, the applicability of AgNPs as antibacterial agents was tested against K. pneumoniae, S. aureus, S. haemolyticus and E. faecalis where the zones of growth inhibition, MIC and MBC values were determined for each bacterium. Overall, the biosynthesized nanoparticles were remarkable catalysts in the discoloration of hazardous dyes and displayed notable antibacterial potency against Gram-positive and Gram-negative bacteria. © 2024

关键词： Antimicrobial activity Catalytic activity Green synthesis Hazardous dyes Saussurea costus

来源：评论

学校读者我要写书评

暂无评论

Segmented readout for Cherenkov time-of-flight positron emission tomography detectors based on bismuth germanate

arXiv

引用

arXiv 2024年

作者： Yi, Minseok Lee, Daehee Gola, Alberto Merzi, Stefano Penna, Michele Lee, Jae Sung Cherry, Simon R. Kwon, Sun Il Department of Biomedical Engineering University of California Davis United States Interdisciplinary Program in Bioengineering College of Engineering Seoul National Graduate School Korea Republic of Integrated Major in Innovative Medical Science Seoul National Graduate School Korea Republic of Fondazione Bruno Kessler Italy Brightonix Imaging Inc. Korea Republic of

Positron emission tomography (PET) is the most sensitive biomedical imaging modality for noninvasively detecting and visualizing positron-emitting radiopharmaceuticals within a subject. In PET, measuring the time-of-flight (TOF) information for each pair of 511-keV annihilation photons improves effective sensitivity but requires high timing resolution. Hybrid materials that emit both scintillation and Cherenkov photons, such as bismuth germanate (BGO), recently offer the potential for more precise timing information from Cherenkov photons while maintaining adequate energy resolution from scintillation photons. However, a significant challenge in using such hybrid materials for TOF PET applications lies in the event-dependent timing spread caused by the mixed detection of Cherenkov and scintillation photons due to relatively lower production of Cherenkov photons. This study introduces an innovative approach by segmenting silicon photomultiplier (SiPM) pixels coupled to a single crystal, rather than using traditional SiPMs that are as large as or larger than the crystals they read. We demonstrated that multiple time stamps and photon counts obtained from the segmented SiPM can classify events by providing temporal photon density, effectively addressing this challenge. The approach and findings would lead to new opportunities in applications that require precise timing and photon counting, spanning the fields of medical imaging, high-energy physics, and optical physics. © 2024, CC BY.

关键词： Photons

来源：评论

学校读者我要写书评

暂无评论

Jing-Si Herbal Tea Suppresses H2O2-Instigated Inflammation and Apoptosis by Inhibiting Bax and Mitochondrial Cytochrome C Release in HIG-82 Synoviocytes

引用

Environmental Toxicology 2024年第12期39卷 5347-5356页

作者： Kao, Shih-Wen Chang, Yu-Chun Lin, Feng-Huei Huang, Tai-Lung Chen, Tung-Sheng Lin, Shinn-Zong Lin, Kuan-Ho Kuo, Wei-Wen Ho, Tsung-Jung Huang, Chih-Yang Graduate Institute of Aging Medicine China Medical University Taichung Taiwan Department of Orthopedic Surgery Chung-Shan Medical University Hospital Taichung Taiwan Department of Biological Science and Technology College of Life Sciences China Medical University Taichung Taiwan Cardiovascular and Mitochondrial Related Disease Research Center Hualien Tzu Chi Hospital Buddhist Tzu Chi Medical Foundation Hualien Taiwan Institute of Biomedical Engineering College of Medicine and College of Engineering National Taiwan University Taipei Taiwan Division of Biomedical Engineering and Nanomedicine Research National Health Research Institute Miaoli Taiwan Department of Orthopedics Chung-Kang Branch Cheng Ching General Hospital Taichung Taiwan School of Life Science National Taiwan Normal University Taipei Taiwan Department of Neurosurgery Hualien Tzu Chi Hospital Buddhist Tzu Chi Medical Foundation Hualien Taiwan Bioinnovation Center Buddhist Tzu Chi Medical Foundation Hualien Taiwan Department of Emergency Medicine China Medical University Hospital Taichung Taiwan College of Medicine China Medical University Taichung Taiwan Ph.D. Program for Biotechnology Industry China Medical University Taichung Taiwan School of Pharmacy China Medical University Taichung Taiwan School of Post-Baccalaureate Chinese Medicine College of Medicine Tzu chi University Hualien Taiwan Department of Chinese Medicine Hualien Tzu Chi Hospital Buddhist Tzu Chi Medical Foundation Tzu Chi University Hualien Taiwan Integration Center of Traditional Chinese and Modern Medicine Hualien Tzu Chi Hospital Buddhist Tzu Chi Medical Foundation Hualien Taiwan Graduate Institute of Biomedical Sciences China Medical University Taichung Taiwan Department of Medical Laboratory Science and Biotechnology Asia University Taichung Taiwan

Inflammation is an intrinsic protective mechanism against various forms of cellular injuries in humans;however, its undesired activation results in tissue damage and cell death. The onset of chronic inflammation and oxidative stress are the key characteristics of autoimmune inflammatory diseases such as rheumatoid arthritis (RA), for which an effective treatment is yet to be developed. Therefore, in this study, we investigated the protective effects and molecular mechanisms of a novel herbal preparation, Jing-Si herbal tea (JS), against H2O2-induced inflammation and cellular damage in HIG-82 synoviocytes. We found that JS did not show any significant alterations in cell viability at 2O2-induced pathological oxidative stress (ROS) in HIG-82 cells. Interestingly, JS treatment not only reduced the ROS levels but also significantly repressed the protein expressions of collagen degrading proteases in a dose-dependent manner. Treatment with JS showed enhanced cell viability against H2O2-induced toxic ROS levels. The expressions of cell protective aggrecan, Collagen II, and Bcl-2 were increased, whereas MMP-13, ADAMTS-2, Cytochrome C, and cleaved Caspase 3 were decreased by JS under inflammatory agents H2O2, MIA, LPS, and TNF-α treatment, respectively, in HIG-82 cells. Interestingly, the cytoprotective effect of JS treatment was attributed to a decreased mitochondrial localization of Bax and a reduction of Cytochrome C release into the cytoplasm of H2O2-treated HIG-82 cells. Collectively, our results suggest a novel protective mechanism of JS for RA treatment, which could be potentially applied as a complementary treatment or as an alternative therapeutic approach to mitigate inflammatory diseases. © 2024 Wiley Periodicals LLC.

关键词： Cell death

来源：评论

学校读者我要写书评

暂无评论

DiffEGG: Diffusion-Driven Edge Generation as a Pixel-Annotation-Free Alternative for Instance Annotation

arXiv

引用

arXiv 2025年

作者： Jo, Sanghyun Lee, Ziseok Lee, Wooyeol Kim, Kyungsu OGQ Seoul Korea Republic of Department of Biomedical Sciences Seoul National University Seoul Korea Republic of Department of Computer Science and Engineering Seoul National University Seoul Korea Republic of School of Transdisciplinary Innovations Interdisciplinary Program in Artificial Intelligence Seoul National University Seoul Korea Republic of

Achieving precise panoptic segmentation heavily relies on pixel-wise instance annotations, but obtaining such datasets is costly. Unsupervised instance segmentation (UIS) eliminates annotation requirements but struggles with adjacent instance merging and single-instance fragmentation, largely due to the limitations of DINO-based backbones, which lack strong instance separation cues. Weakly-supervised panoptic segmentation (WPS) reduces annotation costs by using sparse labels (e.g., points, boxes), yet these annotations remain expensive and introduce human bias and boundary errors, limiting performance. To address these challenges, we propose DiffEGG (Diffusion-Driven EdGe Generation), a fully annotation-free method that extracts instance-aware features from pretrained diffusion models to generate precise instance edge maps. DiffEGG fundamentally differs from prior UIS and WPS approaches by leveraging pretrained diffusion models as a backbone. Unlike DINO-based UIS methods, diffusion models inherently capture fine-grained, instance-aware features, enabling more precise boundary delineation. DiffEGG further enhances edge connectivity through self-supervised fine-tuning, progressively improving instance separation. For WPS, DiffEGG completely eliminates annotation costs and human bias by operating without any form of manual supervision, addressing the key limitations of prior best methods. Additionally, we introduce RIP, a post-processing technique that fuses DiffEGG’s edge maps with segmentation masks in a task-agnostic manner. This broad applicability allows DiffEGG to be seamlessly integrated into various segmentation frameworks. When applied to UIS, DiffEGG and RIP achieve an average +4.4 AP improvement over prior best UIS methods. When combined with weakly-supervised semantic segmentation (WSS), DiffEGG enables WPS without instance annotations, outperforming prior best point-supervised WPS methods by +1.7 PQ. These results demonstrate that DiffEGG’s edge maps serv

关键词： Semantic Segmentation

来源：评论

学校读者我要写书评

暂无评论

Printability and cytotoxicity of alginate/agarose hydrogel with carboxylmethyl cellulose and apple powder

Printability and cytotoxicity of alginate/agarose hydrogel w...

引用

biomedical engineering International Conference (BMEiCON)

作者： K. Chessadangkul N. Damrongplasit S. Morakul T. Tharasanit A. Pimpin Biomedical engineering program Faculty of Engineering Chulalongkorn University Bangkok Thailand Department of Obstetrics Gynaecology and Reproduction Faculty of Veterinary Science Chulalongkorn University Bangkok Thailand Department of Mechanical engineering Faculty of Engineering Chulalongkorn University Bangkok Thailand

ISBN: (纸本)9781665489041

The cultured meat is the solution to reduce resources using in a traditional meat production. It helps produce meat without killing livestock and decrease residue products. The method could also integrate with scaffold’s material which does not derive from animal products. This study aims to investigate the effects of carboxymethyl cellulose (CMC) and apple powder on printability and cytotoxicity as additives in alginate/agarose-based hydrogel. 3D structures of them were printed to find a proper printing condition. From our experiments, the structure could maintain their shapes and uniform line sizes for carboxylmethyl cellulose, but not for apple powder at the 2% w/v alginate and 0.8% w/v agarose. However, the combination of them could be printed well. In parallel, 293FT cells were cultured with hydrogel drop to test cytotoxicity. It showed that the hydrogel with both additives does not harm cells during 8-day culturing.

关键词： Viscosity Printing Powders Additives Toxicology Three-dimensional displays Shape

来源：评论

学校读者我要写书评

暂无评论

Differential Responses of Transplanted Stem Cells to Diseased Environment Unveiled by a Molecular NIR-II Cell Tracker

引用

Research 2021年第1期2021卷 935-950页

作者： Hao Chen Huaxiao Yang Chen Zhang Si Chen Xin Zhao Mark Zhu Zhiming Wang Yuebing Wang Hung-Ta Wo Kai Li Zhen Cheng Center for Molecular Imaging Research Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China Molecular Imaging Program at Stanford(MIPS) Bio-X Programand Department of RadiologyCanary Center at Stanford for Cancer Early DetectionStanford UniversityStanfordCA 94305-5344USA University of North Texas Biomedical EngineeringDentonTX 76207USA Department of Biomedical Engineering Southern University of Science and TechnologyShenzhenGuangdong 518055China Department of Neurology Xiangya HospitalCentral South UniversityXiangya Road 88ChangshaHunan 410008China Stanford Cardiovascular Institute StanfordCA 94305USA Division of Cardiology Department of Internal MedicineChang Gung Memorial HospitalLinkouTaiwan33305China

Stem cell therapy holds high promises in regenerative *** major challenge of clinical translation is to precisely and quantitatively evaluate the in vivo cell distribution,migration,and engraftment,which cannot be easily achieved by current *** address this issue,for the first time,we have developed a molecular cell tracker with a strong fluorescence signal in the second near-infrared(NIR-II)window(1,000-1,700 nm)for real-time monitoring of in vivo cell behaviors in both healthy and diseased animal *** NIR-II tracker(CelTrac1000)has shown complete cell labeling with low cytotoxicity and profound long-term tracking ability for 30 days in high spatiotemporal resolution for semiquantification of the biodistribution of transplanted stem *** advantage of the unique merits of CelTrac1000,the responses of transplanted stem cells to different diseased environments have been discriminated and ***,we also demonstrate CelTrac1000 as a universal and effective technique for ultrafast real-time tracking of the cellular migration and distribution in a 100μm single-cell cluster spatial resolution,along with the lung contraction and heart *** such,this NIR-II tracker will shift the optical cell tracking into a single-cell cluster and millisecond temporal resolution for better evaluating and understanding stem cell therapy,affording optimal doses and efficacy.

关键词： doses distribution holds

来源：评论

学校读者我要写书评

暂无评论

Centrifugal Spinning of Porous Polylactic Acid Fibers by Centrifugal Spinning with Phase Separation for Oil Removal Application

SSRN

引用

SSRN 2024年

作者： Negoro, Masaki Doan, Hoan Ngoc Vo, Phu Phong Khuat, Khanh Van Thi Kinashi, Kenji Sakai, Wataru Tsutsumi, Naoto Master’s Program of Innovative Materials Kyoto Institute of Technology Matsugasaki Sakyo Kyoto606-8585 Japan Tissue Engineering and Regenerative Medicine Laboratory School of Biomedical Engineering International University Vietnam National University Ho Chi Minh City Viet Nam Faculty of Chemistry University of Science Ho Chi Minh City Viet Nam Doctor’s Program of Materials Chemistry Graduate School of Science and Technology Kyoto Institute of Technology Matsugasaki Sakyo Kyoto606-8585 Japan Faculty of Materials Science and Engineering Kyoto Institute of Technology Matsugasaki Sakyo Kyoto606-8585 Japan

Developing biodegradable oil absorption fibrous materials is essential because discarding conventional separation materials could cause secondary pollution due to their nondegradable properties. In this study, highly hydrophobic and superoleophilic porous polylactic acid (PLA) fibers were prepared using centrifugal spinning combined with nonsolvent-induced phase separation. The porous structure of PLA fibers was controlled by the ratio between good solvent and nonsolvent in the spinning solutions. The morphology and physical properties of the obtained PLA fibers were investigated using various measurement techniques. The PLA fibrous membrane prepared from a PLA solution containing chloroform/dimethylformamide (80/20 w/w) indicated not only a high water contact angle but also a high oil sorption value. The porous PLA fibers are a potential candidate for use as green materials for environmental applications. © 2024, The Authors. All rights reserved.

关键词： Spinning (fibers)

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：