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Calibration of low-cost sensor data for ambient PM 2.5 monitoring across urban and rural settings in South Central Uganda

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Atmospheric Pollution Research 2025年第9期16卷

作者： Sophia Le William Checkley Lauren Dudley Joseph Ssuuna Anthony Ndyanabo Engineer Bainomugisha Joel Ssematimba Richard Sserunjogi Deo Okedi Deo Okure Joseph Kagaayi Larry Chang Kirsten Koehler Laura Nicolaou Department of Environmental Health and Engineering Bloomberg School of Public Health Johns Hopkins University Baltimore 21205 MD USA Center for Global Non-Communicable Disease Research and Training Johns Hopkins University Baltimore 21287 MD USA Department of International Health Bloomberg School of Public Health Johns Hopkins University Baltimore 21205 MD USA Division of Pulmonary and Critical Care School of Medicine Johns Hopkins University Baltimore 21287 MD USA Rakai Health Sciences Program Kalisizo Uganda AirQo Department of Computer Science Makerere University Kampala Uganda Division of Infectious Diseases School of Medicine Johns Hopkins University Baltimore 21827 MD USA

Air pollution is a leading risk factor for the global burden of disease. There are limited data from Sub-Saharan Africa (SSA). This study addresses significant data gaps in air quality monitoring in South-Central Uganda. Using a near-reference grade monitor and a network of 27 low-cost air quality monitors in the rural Rakai region and urban cities of Masaka and Kampala, we developed a locally tailored calibration model for ambient PM 2.5 concentrations. Using calibrated data across all low-cost monitors, we then examined spatiotemporal trends in ambient PM 2.5 concentrations. The calibration model, which adjusts for relative humidity, demonstrated robust performance with an R 2 of 0.92, a root mean squared error (RMSE) of 3.83 μg/m 3 and bias of −0.39 μg/m 3 compared to an RMSE of 20.37 μg/m 3 and bias of 15.96 μg/m 3 with the raw data. Mean PM 2.5 concentrations during the dry and wet seasons were 22.1 μg/m 3 and 12.7 μg/m 3 in rural areas, and 37.7 μg/m 3 and 23.2 μg/m 3 in urban areas, respectively. We observed diurnal variations, with PM 2.5 levels peaking in the early morning (6 a.m.–9 a.m.) and late evening (6 p.m.–10 p.m.), correlating with peak traffic hours. Low-cost sensors can enhance air quality research in regions like South-Central Uganda that lack air pollution data. Calibration tailored to local conditions can improve measurement accuracy of ambient PM 2.5 concentrations.

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Author Correction: Feasibility of peak temperature targets in light of institutional constraints

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Nature Climate Change 2025年 119页

作者： Christoph Bertram Ryna Cui Nate Hultman Gokul Iyer Gunnar Luderer Elmar Kriegler Rahel Mandaroux Elina Brutschin Bas van Ruijven Oliver Fricko Shinichiro Fujimori Volker Krey Joeri Rogelj Keywan Riahi Laurent Drouet Lara Aleluia Reis Luiz Bernardo Baptista Roberto Schaeffer Harmen-Sytze de Boer Vassilis Daioglou Isabela Tagomori Detlef van Vuuren Florian Fosse Kimon Keramidas Dimitris Fragkiadakis Zoi Vrontisi Diego Silva Robin D. Lamboll Pedro Rochedo Center for Global Sustainability (CGS) School of Public Policy University of Maryland College Park MD USA Potsdam Institute for Climate Impact Research (PIK) Member of the Leibniz Association Potsdam Germany Joint Global Change Research Institute Pacific Northwest National Laboratory and University of Maryland College Park MD USA Global Energy Systems Analysis Technische Universität Berlin Berlin Germany Faculty of Economics and Social Sciences University of Potsdam Potsdam Germany International Institute for Applied System Analysis (IIASA) Laxenburg Austria Department of Environmental Engineering Kyoto University Kyoto Japan Social Systems Division National Institute for Environmental Studies (NIES) Tsukuba Japan Centre for Environmental Policy and Grantham Institute–Climate Change and Environment Imperial College London London UK Graz University of Technology Graz Austria CMCC Foundation–Euro-Mediterraneaen Center on Climate Change Milan Italy RFF-CMCC European Institute of Economics and the Environment Milan Italy Centre for Energy and Environmental Economics (Cenergia) Energy Planning Program (PPE) COPPE Universidade Federal do Rio de Janeiro Rio de Janeiro Brazil Netherland’s Environmental Agency (PBL) The Hague The Netherlands Copernicus Institute for Sustainable Development Utrecht University Utrecht The Netherlands European Commission Joint Research Centre (JRC) Seville Spain Grenoble Applied Economics Lab Université Grenoble Alpes Grenoble France E3Modelling Athens Greece Research and Innovation Center on CO2 and Hydrogen (RICH Center) and Management Science and Engineering Department Khalifa University Abu Dhabi United Arab Emirates

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Spatial analysis: Mapping potential land for sustainable urban forests using Landsat-TM satellite data imagery in East Jakarta

Spatial analysis: Mapping potential land for sustainable urb...

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2017 CITIES International Conference: Multi Perspectives on Peri-Urban Dynamics Towards Sustainable Development

作者： Sundara, D.M. Hartono, D.M. Suganda, E. Haeruman, H. Environmental Science Program Indonesia Faculty of Engineering Universitas Indonesia Depok West Java16424 Indonesia Universitas Indonesia Jl. Salemba Raya no.4 Jakarta10430 Indonesia

This paper discusses the development of urban forest areas in eastern Jakarta to encourage sustainable urban development and socio-economic environment balance. This research aims to calculate the urban forest area needs in sub-district of Makasar, Ciracas and Cakung sub-districts, East Jakarta. The method used is to calculate index of urban forest area requirement (Indeks Luas Hutan Kota / ILHK) with Marshal Edgewarth method approach. The potential land mapping using Landsat-TM satellite image data is further processed through spatial allasis using Geographic Information System (GIS). The results of this research indicate the existence of sufficient land potential and can function ecologically as urban forests, and able to be a driver for sustainable urban development. © Published under licence by IOP Publishing Ltd.

关键词： Landsat

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17:15-17:25 Evaluation of Sars-CoV-2 entry receptors in COVID-19 positive and negative placentae: correlation between expression and infectivity

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Journal of Reproductive Immunology 2023年 158卷 103555-103555页

作者： Agostinis, Chiara Toffoli, Miriam Spazzapan, Mariagiulia Balduit, Andrea Zito, Gabriella Mangogna, Alessandro Zupin, Luisa Salviato, Tiziana Braga, Luca Maiocchi, Serena Romano, Federico Crovella, Sergio Fontana, Francesco Confalonieri, Marco Ricci, Giuseppe Bulla, Roberta Institute for Maternal and Child Health IRCCS Burlo Garofolo 34137 Trieste Italy Department of Life Sciences University of Trieste 34127 Trieste Italy Department of Diagnostic Clinic and Public Health Medicine University of Modena and Reggio Emilia Modena Italy International Centre for Genetic Engineering and Biotechnology (ICGEB) Padriciano 99 34149 Trieste Italy Biological Science Program Department of Biological and Environmental Sciences College of Arts and Sciences Qatar University Doha P.O. Box 2713 Qatar Division of Laboratory Medicine University Hospital Giuliano Isontina (ASU GI) Trieste Italy Department of Medical Surgical and Health Science University of Trieste 34149 Trieste Italy

ProblemThe risk of pre-term delivery, pre-eclampsia (PE), cesarean section, severe neonatal/perinatal morbidity and mortality was significantly increased in COVID-19 pregnant women (2). The infection of host cells by SARS-CoV-2 requires the presence of two receptors: the transmembrane receptor Angiotensin-Converting Enzyme 2 (ACE2) and the Type II Transmembrane Serine Protease (TMPRSS2) (3,4). Moreover, SARS-CoV-2 may bind to a third alternative receptor, the cluster of differentiation 147 (CD147)/EMMPRIN (5). There is therefore a lack of information on how maternal infection with SARS-CoV-2 impacts the expression of ACE2 and TMPRSS2 in the placenta, at both transcript and protein level. Here, we investigated term placentae collected before the SARS-CoV-2 pandemic and COVID-19+ placentae, analyzing the expression of the three main COVID-19 receptors, namely ACE2, TMPRSS2 and CD147. Method of StudyWe performed RT-qPCR, Western blot and cytofluorimetric analysis on placental tissues and on isolated placental cells, both in resting conditions and after stimulation with Spike protein. Finally, we evaluated the SARS-CoV-2 capability to infect placental cells in vitro. We observed very low expression of the canonical SARS-CoV-2 entry receptors on syncytio- and cytotrophoblast cells, as well as on human umbilical vein endothelial cells (HUVECs), but the infection by the virus resulted into an up-regulation of their expression. In order to try to understand the mechanisms underlying the resistance to Sars-CoV-2 infection of placental cells, we performed transfection tests with the Spike protein to see the formation of cellular syncytia. The simultaneous presence of Spike and functional receptors (ACE2, TMPRSS2) on the cell surface, in fact, leads to the activation of fusogenic mechanisms, which manifest with the formation of syncytia. ResultsOur results lead us to affirm that in healthy placentas there are elevated levels of CD147 expression and variable levels of ACE2, whi

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Postdoc Perspectives on Leadership and Matters of Equity and Inclusion in Polar science

Perspectives of Earth and Space Scientists

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Perspectives of Earth and Space Scientists 2024年第1期5卷

作者： Sophie Goliber Jason Coenen Heather Fair Angela R. Szesciorka Kirstin Schulz David J. Harning Benjamin Fernando Stanislav Saas Ksenofontov Astrid Pacini Marisol Juarez Rivera Radiance Calmer John A. Conroy Eva Lisa Doting Marie Bergelin Devon Dunmire Maria Luisa Sánchez Montes Alexandra M. Ravelo Anne Sledd Taylor R. Stinchcomb Emily J. Tibbett Mariama C. Dryák-Vallies The State University of New York at Buffalo Buffalo NY USA Department of Earth and Atmospheric Sciences University of Nebraska-Lincoln Lincoln NE USA Department of Plant and Microbial Biology University of Minnesota Saint Paul MN USA Marine Mammal Institute Hatfield Marine Science Center Oregon State University Newport OR USA Oden Institute for Computational Engineering and Sciences The University of Texas at Austin Austin TX USA Institute of Arctic and Alpine Research University of Colorado Boulder Boulder CO USA Johns Hopkins University Baltimore MD USA ARCTICenter University of Northern Iowa Cedar Falls IA USA Applied Physics Laboratory Polar Science Center University of Washington Seattle WA USA University of New Mexico Albuquerque NM USA Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder CO USA Ocean Sciences Department University of California Santa Cruz Santa Cruz CA USA Department of Earth and Environmental Science University of Pennsylvania Philadelphia PA USA Berkeley Geochronology Center Berkeley CA USA Department of Earth and Environmental Sciences KU Leuven Heverlee Belgium International Arctic Research Center University of Alaska Fairbanks Fairbanks AK USA National Oceanic and Atmospheric Administration Physical Sciences Laboratory Boulder CO USA Wildlife Conservation Society Arctic-Beringia Program Fairbanks AK USA University of Massachusetts Amherst Amherst MA USA Polar Science Early Career Community Office University of Colorado Boulder Boulder CO USA

In 2023, the first Polar Postdoc Leadership Workshop convened to discuss present and future polar science issues and to develop leadership skills. The workshop discussions fostered a collective commitment to inclusive leadership within the polar science community among all participants. Here, we outline challenges encountered by underrepresented groups in polar sciences, while also noting that progress has been made to improve inclusivity in the field. Further, we highlight the inclusive leadership principles identified by workshop participants to bring to the polar community as we transition into leadership roles. Finally, insights and practical knowledge we gained from the workshop are shared, aiming to inform the community of our commitment to inclusive leadership and encourage the polar community to join us in pursuing action toward our shared vision for a more welcoming polar science future. As a small community of postdoctoral researchers, we outline the leadership skills envisioned for an inclusive future in polar sciences Our vision is to increase the success of underrepresented individuals as leaders by creating a welcoming and supportive career environment Group norms and leadership skills focused on emotional intelligence are critical to equity and inclusion in polar sciences

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Geomagnetic Excursions Recorded in North Atlantic IODP Expedition 395C Sites U1555 and U1563

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Geochemistry, Geophysics, Geosystems 2025年第6期26卷

作者： Anita Di Chiara Sara Satolli Sarah A. Friedman Deepa Dwyer Gary D. Acton Tom Dunkley Jones Boris Theofanis Karatsolis Paul N. Pearson Takuma Suzuki Sevasti Modestou Suzanne O'Connell Halima Ibrahim Claire E. Jasper Danielle E. LeBlanc Saran Lee-Takeda Thena Thulasi Deborah E. Eason Matthias Sinnesael Katharina Hochmuth Anne Briais Ross Parnell-Turner Leah J. LeVay Expedition 395C/395 science Party Istituto Nazionale di Geofisica e Vulcanologia Roma Roma Italy Department of Engineering and Geology University of Chieti-Pescara Chieti Italy School of Earth Environment & Sustainability Georgia Southern University Statesboro GA USA College of Earth Ocean and Atmospheric Sciences Oregon State University Corvallis OR USA International Ocean Discovery Program Texas A&M University College Station TX USA School of Geography Earth and Environmental Sciences University of Birmingham Birmingham UK Archaeology Environmental changes & Geo-Chemistry Vrije Universiteit Brussel Brussels Belgium Department of Earth Sciences Uppsala University Uppsala Sweden Department of Earth Sciences University College London London UK Marine Core Research Institute Kochi University Nankoku Kochi Japan Department of Geography and Environmental Sciences Northumbria University Newcastle upon Tyne UK Department of Earth and Environmental Sciences Wesleyan University Middletown CT USA Department of Earth Sciences Binghamton University Binghamton NY USA Lamont-Doherty Earth Observatory Columbia University Palisades NY USA Department of Earth and Environmental Sciences Boston College Chestnut Hill MA USA Department of Natural Environmental Studies Atmosphere and Ocean Research Institute The University of Tokyo Tokyo Japan Geosciences Division National Centre for Polar and Ocean Research (NCPOR) Vasco-da-Gama India Department of Earth Sciences School of Ocean & Earth Science & Technology University of Hawai'i at Mānoa Honolulu HI USA Geology School of Natural Sciences Trinity College Dublin The University of Dublin Dublin Ireland Institute for Marine and Antarctic Studies (IMAS) College of Science and Engineering University of Tasmania Hobart TAS Australia Australian Centre of Excellence in Antarctic Science University of Tasmania Hobart TAS Australia Geo-Ocean Centre National de la Recherche Scientifique (CNRS) Institut Universitaire Européen de la Mer Rue Dumont d

By studying deep-sea drilled records from the North Atlantic Ocean, several magnetic instabilities of short duration, such as the Iceland Basin (188 ka), the Björn (1,255 ka) and the Gardar (1,460 ka) excursions, were discovered. These records have contributed to our understanding of Earth's magnetic field and are the foundation of the Geomagnetic Instability Time Scale (GITS) in the Quaternary. Here, we present the magnetostratigraphy from Sites U1555 (0 to ∼2.7 Ma) and U1563 (0 to ∼5.2 Ma) drilled during the International Ocean Discovery program Expedition 395C on the eastern side of the modern Mid-Atlantic Ridge (∼60°N, 20–30°W). Shipboard paleomagnetic and microfossil data provided a preliminary age model, extending the regional record to 3.4 Ma. The Virtual Geomagnetic Pole latitudes from archive halves, corroborated with data from discrete samples, were used to build a high-resolution magnetostratigraphy, which contained the expected Brunhes and Matuyama Chrons and their respective Subchrons. We also identified most of the magnetic events reported in the GITS, including the less well-documented ones, such as Osaka, Kamitzukara, Huckleberry Ridge, Reunion, Gardar, Halawa and L4 events. The high-resolution magnetostratigraphy from Sites U1555 and U1563 is compared with two previous legacy sites and contributes toward an increasingly robust GITS, expanding its use as a correlation and dating tool. We present a high-resolution magnetostratigraphy for the last 2.6 Ma from North Atlantic IODP Expedition 395C Sites U1555 and U1563 We identified most of the magnetic events expected in the Brunhes and Matuyama Chrons, including the less well documented This high-resolution magnetostratigraphy contributes toward an increasingly robust GITS Paleomagnetism, the study of the Earth's magnetic field in the past, can decipher a detailed record of the field behavior from marine sediments that accumulate rapidly. Previous drilling into the sediments of the seafloor in the North

关键词： Bruhnes Matuyama magnetostratigraphy excursions paleomagnetism magnetic instabilities International Ocean Discovery program Site U1555 Site U1563 Expedition 395C

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Regional Model of Smart Construction Waste Monitoring: Household Base Framework in Central Java-Indonesia

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IOP Conference Series: Earth and environmental science 2020年第1期448卷

作者： M Maryono S M Hastuti N N Rahma A D Roynaldi Sudarno Hadiyanto Department of Urban and Regional Planning Faculty of Engineering Diponegoro University-Indonesia Center for Green Infrastructure Resilience and Development (C-Greinde) Master Program of Environmental Science School of Postgraduate Diponegoro University-Indonesia Department of Environmental Engineering Faculty of Engineering Diponegoro University-Indonesia Department of Chemical Engineering Faculty of Engineering Diponegoro University-Indonesia

The growth of infrastructure development is currently increasing rapidly in Indonesia. Beside government policy trough their procurement in national, provincial and local level, it is also driven by private sector and per capita as of economic growing and increasing population. In the process physical development, several mixture of material such as stone, cement, sand, demolition material are often left over and discharge. Today Indonesia government will issued construction and demolition waste guideline to make more green and environmental sound. One of the basic problem founded was concerning to the development of model to estimated then monitored construction generation in rural, urban or in a strategic region. Moreover, in the era of digital as known as revolution industry 4.0, an automatic system of monitoring, known as smart monitoring of the construction waste generation is very importance to build. The purpose of this study was to build regional model of smart construction monitoring in Indonesia. The basic method to build the regional model is by utilized an index approach, and combined by using GIS to build automatic information delivery system from rural, urban or region to the central system. This study is then choosed Central Java Province for more detail model development. The study founded 7 (seven) pattern of construction waste generation. The extreme condition founded in Grobogan, Purworejo and Kebumen at which for decade 2000-2014 the degree is waste generation always decrease. In Addition, In central Java Province, this study founded three characteristic of regional model of construction waste as follow: (1) Region with high level of construction waste degree; (2) region with moderate level of construction waste degree; and (3) region with low level of construction waste degree.

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Enhancing Biodiesel from Kemiri Sunan Oil Manufacturing using Ultrasonics 2

Enhancing Biodiesel from Kemiri Sunan Oil Manufacturing usin...

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2nd International Conference on Energy, environmental and Information System, ICENIS 2017

作者： Supriyadi, Slamet Purwanto, Purwanto Anggoro, Didi Dwi Hermawan Doctoral Program of Environmental Science School of Postgraduate Studies Diponegoro University Semarang Indonesia Department of Mechanical Engineering Universitas PGRI Semarang Semarang Indonesia Department of Chemical Engineering Faculty of Engineering Diponegoro University Semarang Indonesia Department of Electrical Engineering Faculty of Engineering Diponegoro University Semarang Indonesia

Kemiri Sunan (Reutalis trisperma (Blanco) Airy Shaw) is a potential plant to be developed as biodiesel feedstock. The advantage of Kemiri Sunan seeds when compared to other biodiesel raw materials is their high oil content. This plant is also very good for land conservation. Due the increasingly demand for biodiesel, research and new methods to increase its biodiesel production continue to be undertaken. The weakness of conventional biodiesel manufacturing process is in the mixing process in which mechanical stirring and heating in the trans-esterification process require more energy and a longer time. A higher and stronger mixing process is required to increase the contact area between the two phases of the mixed substance to produce the emulsion. Ultrasonic is a tool that can be useful for a liquid mixing process that tends to be separated. Ultrasonic waves can cause mixing intensity at the micro level and increase mass transfer, so the reaction can be performed at a much faster rate. This study is to figure out the effect of ultrasonic irradiation on the transesterification process of biodiesel from Kemiri Sunan Oil. © 2018 The Authors, published by EDP sciences.

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Development of a Sparse Polynomial Chaos Expansions Method for Parameter Uncertainty Analysis

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IOP Conference Series: Earth and environmental science 2020年第1期435卷

作者： C X Wang J Liu Y P Li J Zhao X M Kong College of Fundamental Research Beijing Polytechnic Beijing 100176 China School of Environmental Science and Engineering Xiamen University of Technology Xiamen 361024 China School of Environmental Beijing Normal University Beijing 100875 China Research Scientist Environmental Systems Engineering Program Faculty of Engineering and Applied Science University of Regina Regina Sask. S4S 0A2

Incorporating uncertainty assessment into hydrological simulation is of vital significance for providing valuable information for conserving and restoring the ecology environment in arid and semiarid regions. In this study, a sparse polynomial chaos expansions method was developed to quantify hydrological model parameter uncertainties on model performance in Kaidu river basin, China. A four dimension two order polynomial chaos expansions model was built and the effect of four parameters were quantified based on the coefficients of the polynomial chaos expansions model. Results indicated that precipitation in summer has more significant influence on model output than that in other seasons. High Sobol sensitivity indices values (0.22 in spring, 0.17 in summer, 0.21 in autumn and 0.29) for the interaction of precipitation and maximum capacity for fast store demonstrate that they are the major factors affecting runoff generation. These results can help reveal the flow processes and provide valuable information for water resources management.

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Regional Model Development of Plastic Waste Monitoring: Basic Framework from Population and Public Market in Central Java-Indonesia

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IOP Conference Series: Earth and environmental science 2020年第1期448卷

作者： M Maryono K Seruyaningtyas A D Roynaldi C M Hastuti N N Rahma Sudarno Hadiyanto Department of Urban and Regional Planning Faculty of Engineering Diponegoro University-Indonesia Center for Green Infrastructure Resilience and Development (C-Greinde) Master Program of Environmental Science School of Postgraduate Diponegoro University-Indonesia Department of Environmental Engineering Faculty of Engineering Diponegoro University-Indonesia Department of Chemical Engineering Faculty of Engineering Diponegoro University-Indonesia

Recently, Intention to accelerate SGDs achievement and also mitigate climate change impact concerning to regional health, increasing significantly. One of the regional health issues for those is concerning to impcat of plastic waste. Event though plastic is one of the principal materials in the regional market and industry, but then plastic waste arise to be principal problem for regional environmental health indicators since they linked living from land to coastal and to oceans. Many tons of plastic from land accounted enter to costal and or ocean then attack to all living thinks. Moreover they may be able to return to the land as microplastic consumed by fish. Today, quick respond to manage plastic waste have a high assosiation with effort to manage green food cycle as of covering basic regional food and cereal cycle. This study goal is to provide basic model for regional plastic waste degree monitoring. The model is developed by using 'online' population data from regional statistical data and number of public market. GIS tools is used to degree of plastic waste in spatial map. For detail, Central Java Provice was then selected for model assessment. To monitor the plastic waste generation in spatial pattern, online data population for year 1990, 2000, 2010, 2018 and number of traditional market was utilized. The study calculated that the highest degree of plastic waste generation with population-base approach for year 2018 is located in Brebes Regency with estimated 161.53 Ton per day. Semarang city contributed 160.04 Ton per day and total plastic waste generation in Central Java is estimated 3, 090.38. According to the public market location, this study founded that Surakarta, Semarang, Pekalongan and Tegal clasify as high degree of plastic waste ggeneration.

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