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Parabens, bisphenols, and other environmental phenols exposure from cosmetics use in Korean adolescent girls: Findings from a 2-day intervention study

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Environmental Research 2025年 282卷 122039页

作者： Kang, Habyeong Kim, Sunmi Lee, Hyojin Jeong, Yunsun Lee, Jiwon Lee, Inae Moon, Hyo-Bang Choi, Kyungho Kim, Ki-Tae Department of Preventive Medicine Hanyang University College of Medicine Seoul04763 Korea Republic of Chemical Analysis Center Korea Research Institute of Chemical Technology Daejeon34114 Korea Republic of Department of Biology University of Ottawa ONK1N 6N5 Canada Division for Environmental Health Korea Environment Institute Sejong30147 Korea Republic of Department of Environmental Engineering Seoul National University of Science and Technology Seoul01811 Korea Republic of Department of Public Health Keimyung University Daegu42601 Korea Republic of Department of Marine Science and Convergence Technology Ansan15588 Korea Republic of of Public Health Seoul National University Seoul08826 Korea Republic of

Endocrine-disrupting chemicals (EDCs), such as bisphenols, parabens, and benzophenones, are commonly found in personal care products (PCPs) and pose a significant public health concern, particularly in adolescent girls. This study aimed to investigate the association between PCP use and urinary concentrations of environmental phenols in Korean adolescent girls, focusing on the potential role of PCPs as a major source of EDC exposure. A total of 112 female adolescents (aged 13–17 years) were recruited to examine the associations between urinary concentrations of parabens, bisphenols, benzophenones, and other environmental phenols and the self-reported frequency of PCP use (e.g., skincare products, sunscreen, cosmetics, and eye/lip products). In a subsequent two-day intervention restricting cosmetic use, involving a subpopulation of 74 participants, the changes in urinary chemical concentrations were assessed. Baseline findings showed an association between frequent PCP use and higher urinary concentrations of parabens (e.g., methyl, ethyl, and propyl parabens), bisphenol A (BPA), and benzophenone (e.g., benzophenone-1). After the two-day intervention, no significant reductions in EDCs concentrations were observed for the entire intervention participants (n = 74). However, when excluding adolescents with no baseline PCP use (n = 22), substantial reductions were shown in BPA (by 32.7 %), and benzophenones (by 11.9 %–22.8 %). This study contributes to the limited research on EDC exposure in adolescent populations and underscores the need for targeted public health interventions and policy measures to protect vulnerable populations from the potential health risks associated with EDC exposure. © 2025

关键词： Skin care products

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Signal propagation parameters estimation through designed multi layer fibre with higher dominant modes using OptiFibre simulation

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Journal of Optical Communications 2024年第0期45卷 s453-s463页

作者： Zaki Rashed, Ahmed Nabih Ahammad, S.K. Hasane Daher, Malek G. Sorathiya, Vishal Siddique, Abrar Asaduzzaman, Sayed Rehana, Hasin Dutta, Nitul Patel, Shobhit K. Nyangaresi, Vincent Omollo Jibon, Rayhan Habib Ibrahim, Anas Electronics and Electrical Communications Engineering Department Faculty of Electronic Engineering Menoufia University Menouf32951 Egypt Department of ECE Koneru Lakshmaiah Education Foundation Andhra Pradesh Vaddeswaram522302 India Physics Department Islamic University of Gaza P.O. Box 108 Gaza Palestine Department of Information and Communication Technology Marwadi University Rajkot India Department of Smart Robot Convergence and Application Engineering Pukyong National University Busan48513 Korea Republic of Department of Electrical and Computer Engineering University of Waterloo WaterlooONN2L 3G1 Canada Department of Computer Science and Engineering Rangamati Science and Technology University Rangamati Bangladesh Department of Computer Science and Engineering Daffodil International University Dhaka Bangladesh Computer Science and Engineering Department SRM University Andhra Pradesh Guntur India Electronics and Communication Engineering Department Marwadi University Gujarat Rajkot India Tom Mboya University College P.O. Box 199-40300 Homabay Kenya Electronics and Communication Engineering Discipline Khulna University Khulna9208 Bangladesh

The aim and scope of the paper is to simulate the signal propagation parameters estimation through designed multi-layer fibre with higher dominant modes by using OptiFibre simulation software. The multi-layer fibre profile has a length of 1000 m is designed and clarified with six layers. RI difference profile variations are clarified with radial distance variations. Modal/group index, group delay, dispersion, mode field diameter and total fibre losses are demonstrated with the fibre wavelength variations. All the dominant mode field distribution for multi-layer fibre are simulated and demonstrated. The other modes for designed multi-layer fibre with the theoretical fibre cutoff values for the different modes based the designed multi-layer fibre are analyzed and clarified clearly in details. © 2022 Walter de Gruyter GmbH, Berlin/Boston.

关键词： Parameter estimation

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Sample-Driven Federated Learning for Energy-Efficient and Real-Time IoT Sensing

arXiv

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arXiv 2023年

作者： Luu, Minh Ngoc Nguyen, Minh-Duong Bedeer, Ebrahim Nguyen, Van Duc Hoang, Dinh Thai Nguyen, Diep N. Pham, Quoc-Viet The School of Electricals and Electronics Hanoi University of Science and Technology Hanoi Viet Nam The Department of Information Convergence Engineering Pusan National University Busan46241 Korea Republic of The Department of Electrical and Computer Engineering University of Saskatchewan SaskatoonS7N 5A9 Canada The School of Electrical and Data Engineering University of Technology Sydney SydneyNSW2007 Australia The School of Computer Science and Statistics Trinity College Dublin The University of Dublin D02 PN40 Dublin 2 Ireland

In the domain of Federated Learning (FL) systems, recent cutting-edge methods heavily rely on ideal conditions convergence analysis. Specifically, these approaches assume that the training datasets on IoT devices possess similar attributes to the global data distribution. However, this approach fails to capture the full spectrum of data characteristics in real-time sensing FL systems. In order to overcome this limitation, we suggest a new approach system specifically designed for IoT networks with real-time sensing capabilities. Our approach takes into account the generalization gap due to the user’s data sampling process. By effectively controlling this sampling process, we can mitigate the overfitting issue and improve overall accuracy. In particular, We first formulate an optimization problem that harnesses the sampling process to concurrently reduce overfitting while maximizing accuracy. In pursuit of this objective, our surrogate optimization problem is adept at handling energy efficiency while optimizing the accuracy with high generalization. To solve the optimization problem with high complexity, we introduce an online reinforcement learning algorithm, named Sample-driven Control for Federated Learning (SCFL) built on the Soft Actor-Critic (A2C) framework. This enables the agent to dynamically adapt and find the global optima even in changing environments. By leveraging the capabilities of SCFL, our system offers a promising solution for resource allocation in FL systems with real-time sensing *** Codes 68-00 Copyright © 2023, The Authors. All rights reserved.

关键词： Resource allocation

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Universal Stretchable Conductive Cellulose/Pedot:Pss Hybrid Films for Low-Power and Multifunctional Stretchable Electronics

SSRN

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SSRN 2022年

作者： Wibowo, Anky Fitrian Han, Joo Won Kim, Jung Ha Prameswati, Ajeng Entifar, Siti Aisyah Nurmaulia Park, Jihyun Lee, Jonghee Kim, Soyeon Lim, Dong Chan Moon, Myoung-Woon Kim, Min-Seok Kim, Yong Hyun Department of Smart Green Technology Engineering Pukyong National University Busan48513 Korea Republic of Industry-University Cooperation Foundation Pukyong National University Busan48513 Korea Republic of Department of Creative Convergence Engineering Hanbat National University Daejon34158 Korea Republic of Changwon-daero 797 Changwon51508 Korea Republic of Department of Materials and Life Science Research Division Korea Institute of Science and Technology Seoul02792 Korea Republic of School of Electrical Engineering Pukyong National University Busan48513 Korea Republic of

Skin-attachable conductive materials have attracted significant attention for use in wearable devices and physiological monitoring applications. Soft, skin-like conductive films must have excellent mechanical and electrical characteristics with on-skin conformability, stretchability, and robustness to detect body motion and biological signals. In this study, a conductive, stretchable, hydro-biodegradable, and highly robust cellulose/poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) hybrid film is fabricated. Through the synergetic interplay of a conductivity enhancer, non-ionic fluorosurfactant, and surface modifier, the mechanical and electrical properties of the stretchable hybrid film are greatly improved. The stretchable cellulose/PEDOT:PSS hybrid film achieves a limited resistance change of only 1.21-fold after 100 stretch–release cycles (30% strain) with little hysteresis, demonstrating its great potential as a stretchable electrode for stretchable electronics. In addition, the film shows excellent biodegradability, promising environmental friendliness, and safety benefits. High-performance stretchable cellulose/PEDOT:PSS hybrid films, which have high biocompatibility and sensitivity, are applied to human skin to serve as on-skin multifunctional sensors. The conformally mounted on-skin sensors are capable of continuously monitoring human physiological signals, such as body motions, drinking, respiration rates, vocalization, humidity, and temperature, with high sensitivity, fast responses, and very low power consumption (21 μW). The highly conductive hybrid films developed in this study can be integrated as both stretchable electrodes and multifunctional healthcare monitoring sensors. We believe that the highly robust stretchable, conductive, biodegradable, skin-attachable cellulose/PEDOT:PSS hybrid films are worthy candidates as promising soft conductive materials for stretchable electronics. © 2022, The Authors. All rights reserved.

关键词： Cellulose

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Ishophloroglucin a, a Potent Ptp1b Inhibitor Isolated from Brown Alga Ishige Okamurae Inhibits Adipogenesis in 3t3-L1 Adipocytes

SSRN

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SSRN 2022年

作者： Im, Seung Tae Kim, Hyun-Soo Jung, Won-Kyo Lee, Seung-Hong Department of Medical Science Soonchunhyang University Asan31538 Korea Republic of National Marine Biodiversity Institute of Korea Seocheon33662 Korea Republic of Pukyong National University Busan48513 Korea Republic of Research Center for Marine-Integrated Bionics Technology Marine Integrated Biomedical Technology Center Pukyong National University Busan48513 Korea Republic of Department of Pharmaceutical Engineering Soonchunhyang University Asan31538 Korea Republic of

Ishophloroglucin A (IPA) is one of the most abundant and active compounds in Ishige okamurae and is known to be a potential therapeutic candidate for the improvement of metabolic diseases. However, IPA on the inhibitory effects of protein tyrosine phosphatase 1B (PTP1B) and adipogenesis have not been determined. In this study, we investigated the effects of IPA on the inhibition of PTP1B, the effects on adipogenesis, and its mechanisms of action in 3T3-L1 adipocytes. The IC50 value of IPA against PTP1B was 1.05 μM, which evidenced the higher inhibition activity than that of ursolic acid, a known PTP1B inhibitor. For further insight, we predicted the 3D structure of PTP1B and used a docking algorithm to simulate the binding between PTP1B and IPA. Molecular docking studies revealed a high and stable binding affinity between IPA and PTP1B and indicated that the IPA could interacts with the amino acid residues located in a region to the active site of PTP1B. Further studies showed that IPA concentrations between 6.25 μM and 25 μM dose-dependently attenuated adipogenesis, which was accompanied by a reduction in adipogenesis-related factors, including PPARγ, C/EBPα, SREBP-1, and FABP4. Our findings suggested that IPA may be a promising natural compound for the treatment of obesity and related diseases. © 2022, The Authors. All rights reserved.

关键词： Amino acids

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Longitudinal Trends in a Community Trophic Niche in Two Temperate Tributaries Across Forested and Agricultural Watersheds Pre- and Post-Monsoon

SSRN

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SSRN 2023年

作者： Kang, Hee Yoon Lee, Byeong-Gweon Shin, Jae-Ki Kim, Changseong Park, Hyun Je Kang, Chang-Keun School of Earth Sciences and Environmental Engineering Gwangju Institute of Science and Technology Gwangju61005 Korea Republic of Department of Oceanography College of Natural Science Chonnam National University Gwangju61186 Korea Republic of Busan49300 Korea Republic of Department of Marine Ecology and Environment Gangneung-Wonju National University Gangneung25457 Korea Republic of

Pulsed flows from tributaries following monsoon rains alter riverine food web structures. However, understanding of how food web processes within tributaries respond to these pulses remains limited. We analyzed C and N stable isotopes of macroinvertebrates and fish in two tributaries of the Suyeung River, South Korea, before and after the monsoon to quantify changes in the trophic base and diversity, food chain length, and food web trophic niches. We hypothesized that monsoon rains, which increase hydrological connectivity, would shift consumer isotope signatures differently in forest streams and agricultural land channels, thus modifying trophic niches. The δ13C and δ15N values of primary basal resources, leaf litter and biofilms, were consistent before and after the monsoon, with biofilms having higher δ13C values than leaf litter in upper tributaries. However, these resources showed a marked increase in δ15N values from forest streams to agricultural land channels. Consumer δ13C and δ15N values were constant with time but increased longitudinally due to greater nutritional contributions from local resources. Community isotopic niche metrics (breadth, height, area) were consistent across locations and seasons, but trophic niches were separated between watershed locations and were closely overlapped between seasons in isotopic niche space. These results suggest that short-term monsoonal rains do not alter the longitudinal trend of a trophic niche across tributaries, thus disproving our hypothesis. The patterns identified offer insights into food web responses to monsoon rains in temperate tributaries: 1) stream food webs at different watershed locations rely on local resources pre- and post-monsoon;2) downstream food webs rely on nitrogen inputs from agricultural watersheds;and 3) trophic niche expansion in agricultural land channel food webs after monsoon rain is insignificant. Decreasing δ13C and increasing δ15N values reported for downstream consumers after mons

关键词： Location

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Reactive Oxidation Induced Stoichiometric Modulation of Multivalent Vanadium Oxides

SSRN

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SSRN 2023年

作者： Song, Sehwan Lee, Dooyong Son, Yeongjun Choi, Yesul Kim, Jiwoong Han, Seunghoon Lee, Jisung Kim, Seokjun Jeong, Seung Gyo Lim, Si-Heon Yan, Jiafeng Kim, Songkil Choi, Woo Seok Kim, Hyun-Ho Kim, Jaeyong Bae, Jong-Seong Takesue, Naoshia Hwang, Chanyong Park, Sungkyun Department of Physics Pusan National University Busan46241 Korea Republic of Korea Basic Science Institute Korea Republic of Center for Scientific Instrumentation Korea Basic Science Institute Daejeon34133 Korea Republic of School of Mechanical Engineering Pusan National University Busan46241 Korea Republic of Department of Physics Sungkyunkwan University Suwon16419 Korea Republic of Department of Energy Engineering Convergence School of Materials Science and Engineering Kumoh National Institute of Technology Gumi39177 Korea Republic of Department of Physics Institute for High Pressure Hanyang University Seoul04763 Korea Republic of Busan Center Korea Basic Science Institute Busan46742 Korea Republic of Dearptement of Applied Physics Fukuoka University Fukuoka814-0180 Japan Quantum Spin Team Korea Research Institute of Standards & Science Daejeon34113 Korea Republic of

Vanadium oxides, such as V2O3, VO2, and V2O5, have attracted considerable attention because of the fascinating physical properties of each oxidation state. On the other hand, controlling the individual oxidation states precisely is difficult because of the sensitivity of oxygen stoichiometry. This paper reports that reactive oxygen annealing (ROA) can systematically change the oxidation state of the vanadium oxide films grown on a c-Al2O3 substrate. Structural, electrical, and chemical analysis confirmed the evolution of the vanadium oxide phase from V2O3 to V2O3/VO2, VO2, VO2/V2O5, and V2O5, showing that the ROA method could precisely control and tune the oxidation state of the high oxygen-sensitive multivalent metallic oxides. © 2023, The Authors. All rights reserved.

关键词： Vanadium dioxide

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Eco-engineering approaches for ocean negative carbon emission

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science Bulletin 2022年第24期67卷 2564-2573,M0004页

作者： Chuanlun Zhang Tuo Shi Jihua Liu Zhili He Helmuth Thomas Hailiang Dong Buki Rinkevich Yuze Wang Jung-Ho Hyun Markus Weinbauer Celeste López-Abbate Qichao Tu Shucheng Xie Youhei Yamashita Pavel Tishchenko Quanrui Chen Rui Zhang Nianzhi Jiao Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Shenzhen Key Laboratory of Marine Geo-Omics Research Southern University of Science and TechnologyShenzhen 518055China Institute of Marine Science and Technology Shandong UniversityQingdao 266237China Environmental Microbiomics Research Center School of Environmental Science and EngineeringSouthern Marine Science and Engineering Guangdong LaboratorySun Yat-sen UniversityZhuhai 510006China Helmholtz-Center Hereon Institute of Carbon CyclesGeesthacht D-21502Germany Center for Geomicrobiology and Biogeochemistry Research State Key Laboratory of Biogeology and Environmental GeologyChina University of GeosciencesBeijing 100083China Israel Oceanographic&Limnological Research National Institute of OceanographyHaifa Tel Shikmona 3109701Israel Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Department of Marine Science and Convergence Engineering Hanyang University ERICA CampusAnsanGyeonggi-do 15588South Korea Laboratoire d’Océanographie de Villefranche(LOV) Sorbonne Université-CNRS UMR7093Institut de la Mer de Villefranche(IMEV)Villefranche BP28France Instituto Argentino de Oceanografía Consejo Nacional de Investigaciones Científicas y TécnicasBahía Blanca 8000Argentina State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan 430074China Faculty of Environmental Earth Science Hokkaido UniversityHokkaido 060-0810Japan V.I.Il’ichev Pacific Oceanological Institute Far Eastern BranchRussian Academy of SciencesVladivostok 690041Russia State Key Laboratory of Marine Environmental Science Institute of Marine Microbes and EcospheresCollege of Ocean and Earth SciencesXiamen UniversityXiamen 361102China

The goal of achieving carbon neutrality in the next 30-40 years is approaching worldwide consensus and requires coordinated efforts to combat the increasing threat of climate *** main sets of actions have been proposed to address this grand *** is to reduce anthropogenic CO2emissions to the atmosphere,and the other is to increase carbon sinks or negative emissions,i.e.,removing CO2from the *** we advocate eco-engineering approaches for ocean negative carbon emission(ONCE),aiming to enhance carbon sinks in the marine *** international program is being established to promote coordinated efforts in developing ONCE-relevant strategies and methodologies,taking into consideration ecological/biogeochemical processes and mechanisms related to different forms of carbon(inorganic/organic,biotic/abiotic,particulate/dissolved) for *** focus on marine ecosystem-based approaches and pay special attention to mechanisms that require transformative research,including those elucidating interactions between the biological pump(BP),the microbial carbon pump(MCP),and microbially induced carbonate precipitation(MICP).Eutrophic estuaries,hypoxic and anoxic waters,coral reef ecosystems,as well as aquaculture areas are particularly considered in the context of efforts to increase their capacity as carbon *** approaches are thus expected to be beneficial for both carbon sequestration and alleviation of environmental stresses.

关键词： Carbon neutrality Ocean negative carbon emission Biological pump Microbial carbon pump Microbially induced carbonate precipitation Ocean alkalinity

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Applications of Distributed Machine Learning for the Internet-of-Things: A Comprehensive Survey

arXiv

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arXiv 2023年

作者： Le, Mai Huynh-The, Thien Do-Duy, Tan Vu, Thai-Hoc Hwang, Won-Joo Pham, Quoc-Viet The Department of Information Convergence Engineering Pusan National University Busan46241 Korea Republic of The School of Computer Science and Statistics Trinity College Dublin The University of Dublin D02 PN40 Ireland The Department of Computer and Communication Engineering Ho Chi Minh City University of Technology and Education Viet Nam The Department of Electrical Electronic and Computer Engineering University of Ulsan Ulsan44610 Korea Republic of The Department of Biomedical Convergence Engineering Pusan National University Yangsan50612 Korea Republic of The School of Computer Science and Statistics Trinity College Dublin The University of Dublin DublinD02 PN40 Ireland

The emergence of new services and applications in emerging wireless networks (e.g., beyond 5G and 6G) has shown a growing demand for the usage of artificial intelligence (AI) in the Internet of Things (IoT). However, the proliferation of massive IoT connections and the availability of computing resources distributed across future IoT systems have strongly demanded the development of distributed AI for better IoT services and applications. Therefore, existing AI-enabled IoT systems can be enhanced by implementing distributed machine learning (aka distributed learning) approaches. This work aims to provide a comprehensive survey on distributed learning for IoT services and applications in emerging networks. In particular, we first provide a background of machine learning and present a preliminary to typical distributed learning approaches, such as federated learning, multi-agent reinforcement learning, and distributed inference. Then, we provide an extensive review of distributed learning for critical IoT services (e.g., data sharing and computation offloading, localization, mobile crowdsensing, and security and privacy) and IoT applications (e.g., smart healthcare, smart grid, autonomous vehicle, aerial IoT networks, and smart industry). From the reviewed literature, we also present critical challenges of distributed learning for IoT and propose several promising solutions and research directions in this emerging area. Copyright © 2023, The Authors. All rights reserved.

关键词： Internet of things

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Dietary inclusion effect of yacon, ginger, and blueberry on growth, body composition, and disease resistance of juvenile black rockfish (Sebastes schlegeli) against Vibrio anguillarum

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Fisheries and Aquatic sciences 2020年第1期23卷 7.1-7.8页

作者： Lee, Ki Wook Jeong, Hae Seung Cho, Sung Hwoan East Sea Fisheries Research Institute National Institute of Fisheries Science Gangwon-do 25435 South Korea Department of Convergence Study on the Ocean Science and Technology Korea Maritime and Ocean University Busan 49112 South Korea Division of Marine Bioscience Korea Maritime and Ocean University Busan 49112 South Korea

Background: To minimize the use of antibiotics and to obtain a more sustainable fish culture and aquaculture industry, development of alternative natural source of immunostimulant to replace antibiotic in aquafeed is highly needed. Objective: Dietary inclusion effect of yacon (YC), ginger (GG), and blueberry (BB) on growth, body composition, and disease resistance of black rockfish against Vibrio anguillarum was compared to ethoxyquin (EQ). Methods: Four hundred eighty juvenile (an initial weight of 4.2 g) fish were randomly distributed into 12 of 50 L flow-through tanks (forty fish per tank). Four experimental diets were prepared;the control (Con) diet with 0.01% EQ inclusion, and YC, GG, and BB diets at 1% each additive inclusion. Each additive was included into the experimental diets at the expense of wheat flour. Each diet was assigned to triplicate tanks of fish and hand-fed to satiation twice daily for 8 weeks. At the end of 8-week feeding trial, 20 fish from each tank fish were artificially infected by intraperitoneal injection with 0.1 mL of culture suspension of pathogenic V. anguillarum containing 3.3 × 106 cfu/mL respectively. Fish were monitored for the following 8 days after V. anguillarum infection and dead fish were removed every 6 h for the first 4 days and 12 h for the rest of the study. Results: Weight gain, specific growth rate (SGR), and feed efficiency ratio (FER) of fish fed the YC diet was higher than those of fish fed all other diets. However, feed consumption, protein efficiency ratio, and protein retention was not affected by dietary additive. Moisture, crude protein, and crude lipid content of the whole body of fish were affected by dietary additive. Analysis of the Kaplan-Meier survival curves showed that survival of fish fed the YC, BB, and GG diets was higher than the Con diet. Conclusion: Oral administration of YC can improve not only weight gain, SGR, and FER of black rockfish, but lower mortality of rockfish at occurrence of V. angui

关键词： Black rockfish (Sebastes schlegeli) Blueberry Ginger Vibrio anguillarum Yacon

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