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arXiv 2018年

作者： Rock, William Qiao, Baofu Zhou, Tiecheng Clark, Aurora E. Uysal, Ahmet Argonne National Laboratory Chemical Sciences and Engineering Division United States ArgonneIL60439 United States Department of Chemistry and Material Science and Engineering Program United States Washington State University PullmanWA99164 United States

Ion hydration and interfacial water play crucial roles in numerous phenomena ranging from biological to industrial systems. Although biologically relevant (and mostly smaller) ions have been studied extensively in this context, very little experimental data exist about molecular scale behavior of heavy ions and their complexes at interfaces, especially under technologically significant conditions. It has recently been shown that PtCl62-complexes adsorb at positively charged interfaces in a two-step process that cannot fit into well-known empirical trends, such as Hofmeister series. Here, a combined vibrational sum frequency generation and molecular dynamics study reveals that a unique interfacial water structure is connected to this peculiar adsorption behavior. A novel sub-ensemble analysis of MD simulation results show that after adsorption, PtCl62-complexes partially retain their first and second hydration spheres, and it is possible to identify three different types of water molecules around them based on their orientational structures and hydrogen bonding strengths. These results have important implications for relating interfacial water structure and hydration enthalpy to the general understanding of specific ion effects. This in turn influences interpretation of heavy metal ion distribution across and reactivity within, liquid interfaces. Copyright © 2018, The Authors. All rights reserved.

关键词： Molecules

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Influence of inhibitory synapses on the criticality of excitable neuronal networks

arXiv

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arXiv 2020年

作者： Borges, F.S. Protachevicz, P.R. Santos, V. Santos, M.S. Gabrick, E.C. Iarosz, K.C. Lameu, E.L. Baptista, M.S. Caldas, I.L. Batista, A.M. Center for Mathematics Computation and Cognition Federal University of ABC São Bernardo do CampoSP09606-045 Brazil Graduate Program in Science - Physics State University of Ponta Grossa Ponta Grossa PR84030-900 Brazil Institute of Physics University of São Paulo São PauloSP05508-900 Brazil Faculdade de Telêmaco Borba Telêmaco BorbaPR84266-010 Brazil Graduate Program in Chemical Engineering Federal University of Technology Paraná Ponta Grossa PR84016-210 Brazil Cell Biology and Anatomy Department University of Calgary AB T2N 4N1 CalgaryAB Canada Institute for Complex Systems and Mathematical Biology University of Aberdeen AberdeenScotlandAB24 3UE United Kingdom Department of Mathematics and Statistics State University of Ponta Grossa Ponta Grossa PR84030-900 Brazil

In this work, we study the dynamic range of a neuronal network of excitable neurons with excitatory and inhibitory synapses. We obtain an analytical expression for the critical point as a function of the excitatory and inhibitory synaptic intensities. We also determine an analytical expression that gives the critical point value in which the maximal dynamic range occurs. Depending on the mean connection degree and coupling weights, the critical points can exhibit ceasing or ceaseless dynamics. However, the dynamic range is equal in both cases. We observe that the external stimulus mask some effects of self-sustained activity (ceaseless dynamic) in the region where the dynamic range is calculated. In these regions, the firing rate is the same for ceaseless dynamics and ceasing activity. Furthermore, we verify that excitatory and inhibitory inputs are approximately equal for a network with a large number of connections, showing excitatory-inhibitory balance as reported experimentally. Copyright © 2020, The Authors. All rights reserved.

关键词： Dynamics

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Recycling and processing of solid waste into products of the cosmetic packaging industry

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Journal of Physics: Conference Series 2019年第1期1295卷

作者： P. Purwanto A.D. Permana-Citra Doctorate Program of Environmental Science School of Postgraduate Studies (SPS) Universitas Diponegoro Semarang Indonesia Department of Chemical Engineering Faculty of Engineering Universitas Diponegoro Semarang Indonesia STIKES Widya Husada Semarang Indonesia

The waste generation of the plastic packaging industry for the cosmetic product is consisting of the hazardous and non-hazardous waste. The non-hazardous waste of cosmetic product includes product reject, plastic bags, cardboard, and paper. The content of hazardous waste of the cosmetic product is the part such as chemical packaging drum, paint sludge, and wastewater treatment sludge. On the other hand, there is a chance of the waste management that can be started from the segregation of both hazardous and non-hazardous waste, recycling of non-hazardous waste and utilization of waste into products by third parties. That is because the dangerous waste that is carried out according to the waste regulation can be used as a useful product to provide economic and environmental benefits. The research examines various opportunities to use waste as raw material and also to be processed into products. The study steps consist of identification, assessment, techno-economic analysis, and implementation approaches. The study results show that the hazardous solid waste can be used as fuel, filling materials for paving blocks, and ceramic raw materials. The utilization as raw material for paving blocks shows the most significant opportunity for economic and has environmental benefits.

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Pretreatment of Herbal, Tofu and Fertilizer Waste Using UV/Ozon Technique and Its Utilization for Spirulina sp Cultivation

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IOP Conference Series: Earth and Environmental science 2019年第1期248卷

作者： H Hadiyanto A Digda N P Adetya M Evanty Chemical Engineering Department Faculty of Engineering Diponegoro University Graduate Program of Environmental Science School of Postgraduate Studies Diponegoro University Jalan Prof. Soedarto SH Tembalang Semarang Kotak Pos 1269

The herbal, tofu and fertilizer industries contribute considerable waste to the environment. The waste contains COD and organic substances which should be reduced before it is discharged to the environmental body. One of methods is by using Advanced Oxidation Processes (AOPs) degradation method. The process of AOPs in this study used a combination of UV irradiation and ozone to produce hydroxyl radicals. This study was aimed to investigate the degradation of chemical Oxygen Demand (COD) by using AOP techniques and to evaluate the treated waste for microalgae growth. This research consists of two steps: (1) the initial COD degradation using UV-Ozon. (2) utilization of the treated waste for microalgae cultivation by combining a mixed nutrient of waste and 10 mg/L TSP, 10 mg/L Urea, 80mg/L NaHCO3. The results showed that the COD degraded by UV/Ozone follows the first order equation by k value of 0.082/day, 0.223/day and 0.436/day for tofu, herbal and fertilizer waste respectively. The growth rate of Spirulina cultivated in waste medium was in comparable with the one cultivated in control medium.

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Analysis of potential bioethanol production from pineapple (Ananas Comosus L. Merr) peel waste Belik District - Pemalang - Central Java

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AIP Conference Proceedings 2020年第1期2296卷

作者： E. Hugeng Wandono Endang Kusdiyantini Hadiyanto 1Magister Program of Energy School of Postgraduate Studies Diponegoro University Jl. Imam Bardjo SH No.5 Pleburan Semarang 50241 Indonesia 2Department of Biology Faculty of Science and Mathematics Diponegoro University Jl. Prof. Soedharto SH Tembalang Semarang 50275 Indonesia 3Department of Chemical Engineering Faculty of Engineering Diponegoro University Jl. Prof. Soedharto SH Tembalang Semarang 50275 Indonesia

Belik Subdistrict - Pemalang District, which produces honey pineapple with a contribution of around 27,162 tons per year in Central Java, is a superior product, which has great and reliable potential to develop the regional economy. It several small and medium-sized businesses that produce processed pineapple honey that is made into pineapple juice products, pineapple chips, pineapple meal, and some small and medium businesses that sell pineapples peel. This activity produces a lot of honey pineapples peel waste; utilization of pineapple peel waste into bioethanol is expected to be potential energy for household needs. Pineapple skin waste containing carbohydrates and reducing sugars is high enough so that it has the potential to become bioethanol by carrying out the process of fermentation and distillation. One kilogram of pineapple fruit can produce 250 grams of pineapple peel waste, or 1 ton can produce about 250 kg of peel waste. This study uses raw materials for pineapple skin waste with LSF (liquid state fermentation) fermentation method and the distillation process. Using 2.5 kg of peel can produce 1 liter of bioethanol with 27% content. In Belik District, produces pineapple peel waste around 4,125 tons (4,125 kg) per day, bioethanol can be produced around 1.650 liters per day.

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A global assessment of microplastic abundance and characteristics on marine turtle nesting beaches

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Marine Pollution Bulletin 2025年 215卷 117768页

作者： Botterell, Zara L.R. Ardren, Jed Dove, Elly McArthur, Ellen Addison, David S. Adegbile, Oyeronke M. Agamboue, Pierre Didier Agyekumhene, Andrews Allman, Phil Alterman, Alexandra Anderson, Adren Arenholz, Theresa Ariano-Sánchez, Daniel Arnold, Zephania Báez, José C. Bahar, Anat Barbosa, Castro Barrios-Garrido, Hector Başkale, Eyup Berumen, Michael L. Bézy, Vanessa S. Blumenthal, Janice Borja Bosquirolli, Manuela R. Boyce, Alysia J. Brammer-Robbins, Elizabeth Branco, Maria Brooks, Annabelle M.L. Bunbury, Nancy Cardona, Luis Chadwick, Helen Chalkias, Giannis Chug, Kimberly Clark, Jessica Cole, Matthew Coppock, Rachel L. Cuevas, Eduardo Dawson, Tiffany M. Denaro, Maria Donadi, Rodrigo Douglas, Corrine Douglas, Ryan Drobes, Emily Dubois, Chloé Duncan, Emily M. Elston, Chloe A. Esteban, Nicole Fernandes, Gabriela Ferreira-Airaud, Maria B. Finn, Sarah A. Fisayo Christie, Jerome Formia, Angela Fossette-Halot, Sabrina Fuentes, Mariana M.P.B. Galloway, Tamara S. Godfrey, Matthew H. Goodfellow, Joanna Guzmán-Hernández, Vicente Hart, Catherine E. Hays, Graeme C. Hirsch, Sarah E. Hochscheid, Sandra Holloway-Adkins, Karen G. Horrocks, Julia A. Inoguchi, Emi Inteca, Gélica E. Jean, Claire Kaska, Yakup Koumba Mabert, Brice Didier Lambot, Amandine Levy, Yaniv Lewis, Ceri Ley-Quiñonez, César P. Lindeque, Penelope K. Llamas, Israel Lopez-Martinez, Sergio López-Navas, Javier Mack, Kelsey Madeira, Fernando M. Maffucci, Fulvio Majewska, Roksana Mancini, Agnese Mansfield, Katherine L. Marco, Adolfo Margaritoulis, Dimitris Marques da Silva, Isabel Martins, Samir Maurer, Andrew S. McFarlane, Wendy J. Mejías-Balsalobre, Carmen Montello, Maxine A. Mortimer, Jeanne A. Nelms, Sarah E. Nogués Vera, Josep Not, Christelle Novillo-Sanjuan, Olga Oceguera Camacho, Karen Omessi, Omri Ondich, Breanna Outerbridge, Mark Paranthoen, Nicolas Pate, Jessica Pate, S. Michelle Patrício, Ana R. Paxinos, Odysseas Pearl, Tami Perrault, Justin R. Picknell, Angela S. Piovano, Susanna Pococa Arellano, Ernesto I. Ponteen, Alwyn Prakash, Shritika S. Quiros Rosales, Centre for Ecology and Conservation University of Exeter CornwallTR10 9FE United Kingdom Conservancy of Southwest Florida Naples Florida United States Nigerian Institute for Oceanography and Marine Research 3 Wilmot Point Road Victoria Island Lagos Nigeria Wildlife Conservation Society - Gabon Program LibrevilleBP 7847 Gabon University of Ghana Department of Marine and Fisheries Science Ghana Goshen College Department of Biology JN Roth Marine Biology Station Long KeyFL33001 United States Georgia Sea Turtle Center 214 Stable Island Rd. Jekyll IslandGA31527 United States Virgin Islands National Park Sea Turtle Program United States Sea Turtle Trackers PO Box 67422 St. Pete BeachFL 33736 United States Department of Natural Sciences and Environmental Health Faculty of Technology Natural Sciences and Maritime Sciences University of South-Eastern Norway Telemark3800 Bø Norway Centro de Estudios Ambientales y Biodiversidad Universidad del Valle de Guatemala 18 Avenida 11-95 zona 15 01015 Guatemala Sea Sense Organization Hse #7 Seleka Street Mikocheni B Dar es Salaam Tanzania United Republic of Plot No. 350 Regent Estate Mikocheni PO Box 63117 Dar es Salaam Tanzania United Republic of Centro Oceanográfico de Málaga Instituto Español de Oceanografía Málaga Spain Instituto Iberoamericano de Desarrollo Sostenible Universidad Autónoma de Chile Av. Alemania 1090 Región de La Araucanía Temuco4810101 Chile Israel Sea Turtle Rescue Center National Nature and Parks Authority Gan Leumi Beit Yanay Kfar Vitkin Israel Dr. Alfredo Simão da Silva Guinea-bissau Red Sea Research Center King Abdullah University of Science and Technology Thuwal Makkah23955 Saudi Arabia TropWATER James Cook University Townsville4811 Australia Laboratorio de Ecologia General Facultad Experimental de Ciencias La Universidad del Zulia Maracaibo04002 Bolivia Department of Biology Faculty of Sciences Pamukkale University Denizli Turkey Red Sea Research Center Division of Bio

Sandy coastal beaches are an important nesting habitat for marine turtles and a known sink for plastic pollution. Existing methodologies for monitoring the spatiotemporal patterns of abundance and composition of plastic are, however, disparate. We engaged a global network of marine turtle scientists to implement a large-scale sampling effort to assess microplastic abundance in beach sediments on marine turtle nesting beaches. Sand samples were collected from 209 sites spanning six oceans, microplastics (1-5 mm) were extracted through stacked sieves, visually identified, and a sub-sample verified via Fourier-transform infrared spectroscopy. Microplastics were detected in 45 % (n = 94) of beaches and within five ocean basins. Microplastic presence and abundance was found to vary markedly within and among ocean basins, with the highest proportion of contaminated beaches found in the Mediterranean (80 %). We present all data in an accessible, open access format to facilitate the extension of monitoring efforts and empower novel analytical approaches. © 2025 The Authors

关键词： Fourier transform infrared spectroscopy

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A first-principles study on the quantum tunneling of methylhydroxycarbene isomerization in various solvents

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Journal of Physics: Conference Series 2020年第1期1568卷 012003-012003页

作者： E D Susanti F Rusydi I Puspitasari R N Fadilla N D Aisyah A Ahmad Research Center for Quantum Engineering Design Faculty of Science and Technology Universitas Airlangga Jl. Mulyorejo Surabaya 60115 Indonesia Department of Physics Faculty of Science and Technology Universitas Airlangga Jl. Mulyorejo Surabaya 60115 Indonesia Visiting Researcher at Precision Sciences & Technology and Applied Physics Graduate School of Engineering Osaka University Suita 565-0871 Japan Information System Study Program Faculty of Science and Technology Universitas Airlangga Jl. Mulyorejo Surabaya 60115 Indonesia School of Chemical Science and Food Technology Faculty of Science and Technology Universiti Kebangsaan Malaysia Bangi Selangor 43600 Malaysia

Quantum tunneling phenomenon allows a high-barrier reaction to occur even though thermal energy is not sufficient to surmount the barrier. The phenomenon has been suggested to exist in the isomerization of methylhydroxycarbene which occured at 11 K. Here we study the quantum tunneling that occured in the isomerization of methylhydroxycarbene to acetaldehyde and to vinyl alcohol based on density functional calculations. The isomerization pathways are determined under the effect of various solvents which are modeled by polarizable continuum model (PCM). We use Wentzel-Kramers-Brillouin (WKB) approximation to calculate the tunneling probability (T) and extend the usefulness of T into isomerization rate. The results show that the solvents give a significant effect on the isomerization rate of methylhydroxycarbene to acetaldehyde but an insignificant one on the isomerization rate to vinyl alcohol.

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Integrated Energy Devices: 3D Heteroatom‐Doped Carbon Nanomaterials as Multifunctional Metal‐Free Catalysts for Integrated Energy Devices (Adv. Mater. 13/2019)

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Advanced Materials 2019年第13期31卷

作者： Rajib Paul Feng Du Liming Dai Yong Ding Zhong Lin Wang Fei Wei Ajit Roy Department of Macromolecular Science and Engineering Case Western Reserve University Cleveland OH 44106 USA School of Materials Science and Engineering Georgia Institute of Technology Atlanta GA 30332‐0245 USA Department of Chemical Engineering Tsinghua University Beijing 100084 China Materials and Manufacturing Directorate Air Force Research Laboratory Wright‐Patterson AFB Dayton OH 45433 USA

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Li Metal Anodes: Nonwoven rGO Fiber‐Aramid Separator for High‐Speed Charging and Discharging of Li Metal Anode (Adv. Energy Mater. 27/2020)

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Advanced Energy Materials 2020年第27期10卷

作者： Yong Jun Gong Jung Woon Heo Hakji Lee Hyunjin Kim Jinil Cho Seonmi Pyo Heejun Yun Heebae Kim Sang Yoon Park Jeeyoung Yoo Youn Sang Kim Program in Nano Science and Technology Graduate School of Convergence Science and Technology Seoul National University Gwanak‐ro 1 Gwanak‐gu Seoul 08826 Republic of Korea Advanced Institute of Convergence Technology Gwanggyo‐ro 145 Yeongtong‐gu Suwon 16229 Republic of Korea Korea Research Institute of Chemical Technology 141 Gajeong‐ro Yuseong‐gu 34114 Republic of Korea Department of School of Energy Engineering Kyungpook National University Daehak‐ro 80 Buk‐gu Daegu 41566 Republic of Korea School of Chemical and Biological Engineering College of Engineering Seoul National University Gwanak‐ro 1 Gwanak‐gu Seoul 08826 Republic of Korea

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Front Cover: Cationic Polymerization via Activation of Alkoxyamines Using Photoredox Catalysts (ChemPhotoChem 11/2019)

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ChemPhotoChem 2019年第11期3卷 1055-1055页

作者： Masato Konya Dr. Mineto Uchiyama Prof. Kotaro Satoh Prof. Masami Kamigaito Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Furo-cho Chikusa-ku Nagoya 464-8603 Japan Current Address: Department of Chemical Science and Engineering School of Materials and Chemical Technology Tokyo Institute of Technology 2-12-1-H120 Ookayama Meguro-ku Tokyo 152-8550 Japan

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