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Application of nanocatalyst iron oxide (Fe2O3) to reduce exhaust emissions (CO and HC)

IOP Conference Series: Materials science and engineering 2018年第1期432卷

作者： P Puspitasari C Yazirin L A Bachtiar J W Dika SM S N S Zaharis Mechanical Engineering Department Engineering Faculty Malang State University Semarang street 5 Malang East Java Indonesia Center of Nano Research and Advanced Materials Malang State University Semarang street 5 Malang East Java Indonesia Master Program of Mechanical Engineering Engineering Faculty Malang State University Semarang street 5 Malang East Java Indonesia Bachelor Program Mechanical Engineering Department Malang State University Semarang street 5 Malang East Java Indonesia Industrial Chemical Technology Programme Faculty of Science and Technology Universiti Sains Islam Malaysia Bandar Baru Nilai 71800 Nilai Negeri Sembilan

Fe2O3 has been the interest of many studies due to its applications in various scientific and industrial fields including in environment, corrosion, soil science, and exhaust emissions. Fe2O3 is a chemical mixture that can be applied as a catalyst to reduce exhaust emissions because it is capable of binding CO and HC contained in motorcycle exhaust gases The growth of motor vehicles results in air pollution and an increase in exhaust emissions consisting of 70.50% CO and 18.34% HC. One effort to reduce exhaust emission levels is by applying a catalytic converter to the exhaust system. This research was an experimental research aiming to investigate the difference in emission level of CO and HC between a motorcycle with and without a catalytic converter. The types of fuel used were RON 88, RON 90, RON 92, and RON 98. The results showed that the application of Fe2O3 as a catalyst could reduce the level of CO significantly in RON 88, i.e. 91.43% CO, and the level of HC in RON 88 and RON 92, i.e. 53.27% and 91.07% HC respectively.

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Publisher Correction: MEMOTE for standardized genome-scale metabolic model testing

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Nature biotechnology 2020年第4期38卷 504页

作者： Christian Lieven Moritz E Beber Brett G Olivier Frank T Bergmann Meric Ataman Parizad Babaei Jennifer A Bartell Lars M Blank Siddharth Chauhan Kevin Correia Christian Diener Andreas Dräger Birgitta E Ebert Janaka N Edirisinghe José P Faria Adam M Feist Georgios Fengos Ronan M T Fleming Beatriz García-Jiménez Vassily Hatzimanikatis Wout van Helvoirt Christopher S Henry Henning Hermjakob Markus J Herrgård Ali Kaafarani Hyun Uk Kim Zachary King Steffen Klamt Edda Klipp Jasper J Koehorst Matthias König Meiyappan Lakshmanan Dong-Yup Lee Sang Yup Lee Sunjae Lee Nathan E Lewis Filipe Liu Hongwu Ma Daniel Machado Radhakrishnan Mahadevan Paulo Maia Adil Mardinoglu Gregory L Medlock Jonathan M Monk Jens Nielsen Lars Keld Nielsen Juan Nogales Intawat Nookaew Bernhard O Palsson Jason A Papin Kiran R Patil Mark Poolman Nathan D Price Osbaldo Resendis-Antonio Anne Richelle Isabel Rocha Benjamín J Sánchez Peter J Schaap Rahuman S Malik Sheriff Saeed Shoaie Nikolaus Sonnenschein Bas Teusink Paulo Vilaça Jon Olav Vik Judith A H Wodke Joana C Xavier Qianqian Yuan Maksim Zakhartsev Cheng Zhang Novo Nordisk Foundation Center for Biosustainability Technical University of Denmark Lyngby Denmark. Systems Biology Lab Amsterdam Institute of Molecular and Life Sciences (AIMMS) Vrije Universiteit Amsterdam Amsterdam the Netherlands. BioQUANT/COS Heidelberg University Heidelberg Germany. Ecole Polytechnique Fédérale de Lausanne Laboratory of Computational Systems Biotechnology Lausanne Switzerland. iAMB-Institute of Applied Microbiology ABBt-Aachen Biology and Biotechnology RWTH Aachen University Aachen Germany. Department of Bioengineering University of California La Jolla CA USA. Department of Chemical Engineering and Applied Chemistry University of Toronto Toronto Ontario Canada. Human Systems Biology Laboratory Instituto Nacional de Medicina Genomica & Coordinación de la Investigación Científica-Red de Apoyo a la Investigación UNAM Mexico City Mexico. Institute for Systems Biology Seattle WA USA. Computational Systems Biology of Infection and Antimicrobial-Resistant Pathogens Institute for Biomedical Informatics (IBMI) Tübingen Germany. Department of Computer Science University of Tübingen Tübingen Germany. German Center for Infection Research (DZIF) partner site Tübingen Tübingen Germany. Australian Institute for Bioengineering and Nanotechnology The University of Queensland Brisbane Queensland Australia. Argonne National Laboratory Lemont IL USA. Analytical Biosciences Division of Systems Biomedicine and Pharmacology Leiden Academic Centre for Drug Research Leiden University Leiden the Netherlands. Department of Systems Biology Centro Nacional de Biotecnología Consejo Superior de Investigaciones Científicas (CNB-CSIC) Madrid Spain. Centro de Biotecnología y Genómica de Plantas (CBGP UPM-INIA) Universidad Politécnica de Madrid (UPM) - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA) Madrid Spain. Department of Animal and Aquacultural Sciences Faculty of Biosciences Norwegian University of Life Sciences Oslo Norway

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

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The Intermediate State of the Layered → Spinel Phase Transformation in LiNi0.80Co0.15Al0.05O2 Cathode

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Microscopy and Microanalysis 2017年第S1期23卷 2014-2015页

作者： Hanlei Zhang Khim Karki Yiqing Huang M. Stanley Whittingham Eric A. Stach Guangwen Zhou Materials Science and Engineering Program and Mechanical Department State University of New York Binghamton New York 13902 USA NorthEast Center for Chemical Energy Storage State University of New York Binghamton New York 13902 USA Center for Functional Nanomaterials Brookhaven National Laboratory Upton New York 11973 USA

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Effectiveness Study of Drinking Water Treatment Using Clays/Andisol Adsorbent in Lariat Heavy Metal Cadmium (Cd) and Bacterial Pathogens

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IOP Conference Series: Materials science and engineering 2018年第1期349卷

作者： Pranoto Inayati Fathoni Firmansyah Department of Chemistry Faculty of Mathematics and Natural Sciences Sebelas Maret University Jl. Ir. Sutami 36A Surakarta 57126 Indonesia Department of Chemical Engineering Faculty of Engineering Sebelas Maret University Jl. Ir. Sutami 36A Surakarta 57126 Indonesia Master Program of Environment Science Graduate School Sebelas Maret University Surakarta Indonesia

Water is a natural resource that is essential for all living creatures. In addition, water also caused of disease affecting humans. The existence of one of heavy metal pollutants cadmium (Cd) in the body of water is an environmental problem having a negative impact on the quality of water resources. Adsorption is one of the ways or methods that are often used for the treatment of wastewater. Clay and allophanic soil were used as Cd adsorbent by batch method. Ceramic filter was used to reduce Cd concentration in the ground water. This study aims to determine the effect of the composition of clay and Allophane, activation temperature and contact time on the adsorption capacity of Cd in the model solution. The optimum adsorption condition and the effectiveness of drinking water treatment in accordance with Regulation of the Minister of Health using clay/Andisol adsorbents in ensnare heavy metals Cd and bacterial pathogens. Identification and characterization of adsorbent is done by using NaF, Infrared Spectroscopy (FTIR), X-ray diffraction (XRD), specific surface area and total acidity specific. The Cd metal concentrations were analysed by atomic absorption spectroscopy. Adsorption isotherms determined by Freundlich and Langmuir equations. Modified water purification technology using ceramic filters are made with a mixture of clay and Andisol composition. The results showed samples of clay and Andisol containing minerals. The optimum condition of adsorption was achieved at 200 °C of activation temperature, 60 minutes of contact time and the 60:40 of clay:Andisol adsorbent composition. Freundlich isotherm represented Cd adsorption on the clay/Andisol adsorbent with a coefficient of determination (R2=0.99) and constant (k=1.59), higher than Langmuir (R2=0.89). The measurement results show the water purification technology using ceramic filters effectively reduce E. coli bacterial and Cd content in the water.

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The Robusta coffee grounds residues to adsorb the heavy metal Lead (Pb) in the water Layout guide for using Microsoft Word

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Journal of Physics: Conference Series 2018年第1期1114卷

作者： A D Moelyaningrum K Ngibad L P Lestari P Sunu D A Sari E P Permana D Hertina C F B Hartanto N Kurniasih Department of Environmental Health and Occupational Health and Safety Public Health Faculty. University of Jember Indonesia Medical Laboratory Program Faculty of Health Science Universitas Maarif Hasyim Latif Sidoarjo Indonesia Faculty of Animal Science Universitas Boyolali Indonesia Chemical Engineering Engineering Faculty University of Singaperbangsa Karawang Indonesia Department of Elementary School Teacher Education Faculty of Teacher Training and Education. University of Nusantara PGRI Kediri Indonesia Management and Bussines. Widyatama University Bandung Indonesia Nautical Science Program. Akademi Pelayaran Niaga Indonesia Indonesia Faculty of Communication Sciences Library and Information Science Program Universitas Padjajaran Indonesia

Lead (Pb) were toxic. Lead found in pipes, batteries, paint, dyes ceramic glaze, gasoline, and final waste disposal. The robusta coffee grouds residues had high carbon, nitrogen etc which can adsorb heavy metal. The purpose of this study is to analyze the robusta coffee grounds residues to adsorb the Pb in the water. The method of this research is a True Experimental using completely randomized design (CRD) method. There were control groups (C) and three treatments groups (T1; T2;T3; 5gram/litre; 8gram/litre; 10gram/litre) with six repetitions. The robusta coffee ground residues were contacted for 2 hours. Total samples were 24 samples which analyzed each parameter of the Pb with Atomic Adsorption Spectophotometry Analysis. The results showed that the more coffee ground residues that are exposed, increasingly turbid. The KS test showed that data were a normal distribution (sig = 0,324). One way ANOVA test; Turkey post Hoc showed that there was sig difference between the control and treatment (F = 4,326, Sig = 0,017). There were sig difference between control and treatment 2 and 3 (Sig = 0,019; Sig = 0,038). Robusta coffee grounds residues can reuse to adsorb the Pb pollution in the water. It can be a solution for treating the lead pollution in the water because of it easy to the application.

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The influence of pigment concentration, particle size distribution, and aspect ratio on rheology

The influence of pigment concentration, particle size distri...

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Paper Conference and Trade Show, PaperCon 2016

作者： Weeks, Lisa Bousfield, Doug W. Lyons, Anthony Paper Surface Science Program Department of Chemical and Biological Engineering University of Maine OronoME04469 United States IMERYS 618 Kaolin Rd. SandersvilleGA31082 United States

ISBN: (纸本)9781510831193

Paper coating colors are non-Newtonian suspensions that are subjected to high shear rates during blade coating applications. The rheological behavior has been linked as a potential cause of runnability issues. There are several important factors that control the rheology of a suspension such as size distribution, aspect ratio, solids content, and other additives. However, there has not been a clear understanding of the interaction of these factors on the rheology given in the literature. Particle size analysis on five different pigments with a range of aspect ratios was completed using two different techniques. A new parameter, ω, was devised using the results from the particle size analysis data which was used to characterize the pigments. The maximum packing fraction for each of the pigments were determined by two different methods. The rheology was also examined for the pigments in the shear rate range of 2,000 to 23,000 s-1. Three viscosity-volume fraction equations were fit to the experimental data. The maximum packing fraction that fit the experimental results was different than the measured values. An analysis of the maximum packing fraction and the intrinsic viscosity was completed to demonstrate the dependence on shape factor, α, or the new parameter, ω. New expressions were developed to estimate the viscosity at 10,000 s-1 based upon the Krieger-Dougherty equation using the volume fraction, centrifuged packing fraction and either α or ω.

关键词： Particle size analysis

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Polymer Brushes: Polymer Brushes on Hexagonal Boron Nitride (Small 19/2019)

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Small 2019年第19期15卷

作者： Wenbo Sheng Ihsan Amin Christof Neumann Renhao Dong Tao Zhang Erik Wegener Wei-Liang Chen Paul Förster Hai Quang Tran Markus Löffler Andreas Winter Raul D. Rodriguez Ehrenfried Zschech Christopher K. Ober Xinliang Feng Andrey Turchanin Rainer Jordan Chair of Macromolecular Chemistry School of Science Technische Universität Dresden Mommsenstr. 4 01069 Dresden Germany Junior Research Group Biosensing Surfaces Leibniz Insitute for Plasma Science and Technology (INP) Felix-Hausdorff-Str. 2 17489 Greifswald Germany Department of Materials Science and Engineering Cornell University 310 Bard Hall Ithaca NY 14853 USA Institute of Physical Chemistry Friedrich Schiller University Jena Center for Energy and Environmental Chemistry Jena (CEEC Jena) Lessingstr. 10 07743 Jena Germany Chair of Molecular Functional Materials School of Science Technische Universität Dresden Mommsenstr. 4 01069 Dresden Germany Robert Frederick Smith School of Chemical and Biomolecular Engineering Cornell University 120 Olin Hall Ithaca NY 14853 USA Dresden Center for Nanoanalysis Center for Advancing Electronics Dresden (CfAED) Technische Universität Dresden Helmholtzstr. 18 01187 Dresden Germany Research School of Chemistry & Applied Biomedical Sciences Tomsk Polytechnic University 30 Lenin Ave 634050 Tomsk Russia Department Head Microelectronic Materials and Nanoanalysis Fraunhofer Institute for Ceramic Technologies and Systems Maria Reiche Str. 2 01099 Dresden Germany

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Ultrafast dynamics at 25T in photosynthetic protein complexes

Ultrafast dynamics at 25T in photosynthetic protein complexe...

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International Conference on Ultrafast Phenomena, UP 2016

作者： Maiuri, M. Oviedo, M.B. Dean, J.C. Toa, Z.S.D. Bishop, M. Wong, Bryan M. McGill, S. Scholes, G.D. Department of Chemistry Princeton University Washington Road PrincetonNJ08544 United States Department of Chemical Environmental Engineering and Materials Science Engineering Program University of California-Riverside RiversideCA92521 United States Paul Dirac Dr. 1800 TallahasseeFL United States

Ultrafast coherences in photosynthetic algae proteins are discriminated by using 25Tmagnetic field coupled with a pump-probe apparatus. Electronic/vibronic coherences are modulated by the presence of the field, while ... 详细信息

ISBN: (纸本)9781943580187

关键词： Proteins

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Flare gas recovery as one of the clean development mechanism (CDM) practices

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IOP Conference Series: Earth and Environmental science 2018年第1期200卷

作者： M S Sari Hadiyanto F Muhammad Master Program of Environmental Science School of Postgraduate Studies Diponegoro University Jl. Imam Bardjo S.H No. 5 Pleburan Semarang 50241 Indonesia Department of Chemical Engineering Faculty of Engineering Diponegoro University Jl. H. Prof. Soedarto SH. Tembalang Semarang 50275 Indonesia Department of Biology Faculty of Engineering Diponegoro University Jl. H. Prof. Soedarto SH. Tembalang Semarang 50275 Indonesia

Global warming has become an important issue over the last few decades. One of the causes is the presence of Greenhouse Gases (GHG) which is emitted by human activities. Oil and gas production (drilling, work over, and refinery) for energy consume will be followed by the associated gas. The associated gas will be flared due to safety and non-economic reasons. The objectives of this study are reviewing the environmental impact and utilize technologies from flaring gas. The impact of flaring gas can lead to a decrease in human health, increased GHG, changing the plant metabolism, and decrease the production of agricultural crops. Due to these, there are some technologies to reduce flaring such as: reinjection (EOR activities), PNG, LPG, LNG, CNG, NGH, GTE, and GTL. The flare gas recovery is expected to obtain the lower value of GHG in the air and as one of the clean development mechanism (CDM) practices with a rethink, reuse, reduce, recovery, and recycle principle.

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Non-close-packed three-dimensional quasicrystals

arXiv

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arXiv 2017年

作者： Damasceno, Pablo F. Glotzer, Sharon C. Engel, Michael Applied Physics Program University of Michigan Ann ArborMI48109 United States Department of Cellular and Molecular Pharmacology University of California San Francisco San FranciscoCA94158 United States Department of Materials Science and Engineering University of Michigan Ann ArborMI48109 United States Department of Chemical Engineering University of Michigan Ann ArborMI48109 United States Institute for Multiscale Simulation Friedrich-Alexander-University Erlangen-Nuremberg Erlangen91052 Germany

Quasicrystals are frequently encountered in condensed matter. They are important candidates for equilibrium phases from the atomic scale to the nanoscale. Here, we investigate the computational self-assembly of four quasicrystals in a single model system of identical particles interacting with a tunable isotropic pair potential. We reproduce a known icosahedral quasicrystal and report a decagonal quasicrystal, a dodecagonal quasicrystal, and an octagonal quasicrystal. The quasicrystals have low coordination number or occur in systems with mesoscale density variations. We also report a network gel phase. Copyright © 2017, The Authors. All rights reserved.

关键词： Quasicrystals

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