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Profiles of readiness: Using a blended framework to explore what it takes for faculty to be ready to change instructional practice

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Journal of Geoscience Education 2021年第3期69卷 281-299页

作者： Hauk, Shandy St John, Kristen Jones, Megan Mathematics Department San Francisco State University San Francisco CA United States Science Technology Engineering & Mathematics Program WestEd San Francisco CA United States Department of Geology and Environmental Science James Madison University Harrisonburg VA United States Earth and Environmental Science North Hennepin Community College Brooklyn Park MN United States

In answer to calls for research about professional change, this study addressed the question: What is involved in college science faculty readiness for change in instructional practice? The setting was a professional development experience in oceanography/marine science and paleoclimatology among 32 faculty from 2- and 4-year colleges. Ten of the 32 participated in interviews, and all provided survey responses and documents used in the study. Cycles of inductive analysis generated three example case stories to illustrate a new model for exploring faculty readiness for change in teaching. The model blends results from the health sciences on readiness for behavioral change with research on the personal, external, professional, and consequence domains of a professional change environment. The blended model attends to how an instructor draws on the domains to (a) see an instructional challenge as requiring intentional action to be resolved;(b) notice new significance (for the instructor) in some aspect of instructional practice;(c) feel able to manage instructional stressors/challenges;(d) have commitment to initiate/sustain change;and (e) perceive adequate support in undertaking change. Profiles of instructional readiness for change are represented by composite cases named Lee, Pat, and Chris. In the case of Lee, factor (c) drove change efforts;for Pat, factors (a) and (b) were in the forefront;and for Chris it was factors (d) and (e). The three cases are valuable both as sketches of the blended model in use and as touchstones for future research and development related to postsecondary faculty professional learning. © 2021 The Author(s). Published with license by Taylor and Francis Group, LLC.

关键词： commitment Faculty professional development readiness support

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Visualization of water transfer channel in sludge dewatering conditioned with skeleton builders by X-ray micro-computed tomography

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Chemosphere 2024年 355卷 141818页

作者： Xiao, Keke Lv, Yang Yu, Wenbo Yang, Jiakuan School of Environmental Science and Engineering Huazhong University of Science and Technology 1037 Luoyu Road Hubei Wuhan430074 China Hubei Provincial Engineering Laboratory of Solid Waste Treatment Disposal and Recycling 1037 Luoyu Road Hubei Wuhan430074 China Environmental Science and Engineering Program Guangdong Technion-Israel Institute of Technology 241 Daxue Road Guangdong Shantou515063 China Nanjing Institute of Environmental Sciences Ministry of Ecology and Environment of the People's Republic of China 8 Jiangwangmiao Street Jiang Su Nanjing210042 China Hubei Water Quality Safety and Water Pollution Control Engineering Center 1037 Luoyu Road Hubei Wuhan430074 China State Key Laboratory of Coal Combustion Huazhong University of Science and Technology 1037 Luoyu Road Hubei Wuhan430074 China

Skeleton builders were normally deemed to improve the high porosity and newly-generated permeability of sludge cakes by building water transfer channel during high pressure filtration, thus enhancing sludge dewaterability. However, currently a direct visualization proof of water transfer channel was still lacking. This study provided the direct proof for visualizing water transfer channel in dewatered sludge cakes conditioned with a typical skeleton builder (i.e., phosphogypsum (PG)) by X-ray micro-computed tomography (micro-CT) for the first time. After the addition of PG, the pixel value and image luminance increased significantly, indicating the presence of high density substances from both two-dimensional (2D) cross section and three-dimensional (3D) reconstruction CT images. Moreover, the CT numbers showed strong and negative correlations with specific resistance to filtration (SRF) (R = − 0.99, p © 2024 Elsevier Ltd

关键词： Visualization

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Conceptual Model of Graph-based Individual Tree and Its Utilization in Digital Twin and Metaverse of Urban Forest

Conceptual Model of Graph-based Individual Tree and Its Util...

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2024 Symposium on Spatial Information to Empower the Metaverse

作者： Ambarwari, Agus Suwardhi, Deni Rani, Medria Shekar Husni, Emir Junaidy, Deny Willy Agirachman, Fauzan Alfi Murtiyoso, Arnadi Griess, Verena Christiane Doctoral Program of Electrical Engineering and Informatics School of Electrical Engineering and Informatics Institut Teknologi Bandung Jl. Ganesha No.10 Bandung40132 Indonesia Faculty of Earth Sciences and Technology Institut Teknologi Bandung Indonesia School of Architecture Planning and Policy Development Institut Teknologi Bandung Indonesia School of Electrical Engineering and Informatics Institut Teknologi Bandung Indonesia Faculty of Art and Design Institut Teknologi Bandung Indonesia Department of Environmental Systems Science Forest Resources Management Institute of Terrestrial Ecosystems Zurich8092 Switzerland

3D city models are an important cornerstone in the development of digital twin cities, allowing for various analyses and simulations. CityGML, as an open standard for 3D city models, emphasizes five main aspects: scale or level of detail (LoD), semantics, geometry, topology, and appearance. One of the important elements in CityGML 3D city models is representation of vegetation. Vegetation in CityGML, especially individual trees, is still limited in terms of detail and resolution, reducing its effectiveness for specific applications. This paper proposes a graph-based conceptual model for individual trees that conforms to the CityGML v2.0 specification. The model refers to the morphological structure of a tree consisting of roots, trunk, and crown (including branches, twigs, and leaves), and considers the five main aspects of CityGML. By enhancing semantic information and geometric details, the model aims to provide an information-rich and realistic representation of individual trees in a 3D city environment. The 3D tree model created based on this conceptual model may be applicable in the development of digital twin urban forests and virtual forest simulations that utilize immersive technologies such as the metaverse. This research opens up new opportunities in the development of solitary vegetation objects through CityGML ADE by including more detailed semantic and topological information. © Author(s) 2024.

关键词： Digital elevation model

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Biochar as construction materials for achieving carbon neutrality

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Biochar 2022年第1期4卷 194-218页

作者： Yuying Zhang Mingjing He Lei Wang Jianhua Yan Bin Ma Xiaohong Zhu Yong Sik Ok Viktor Mechtcherine Daniel C.W.Tsang Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina State Key Laboratory of Clean Energy Utilization Zhejiang UniversityHangzhou 310027China Laboratory for Waste Management Nuclear Energy and SafetyPaul Scherrer Institute5232 VilligenSwitzerland School of Civil Engineering University of LeedsWest YorkshireLeedsUK Korea Biochar Research Center APRU Sustainable Waste Management Program&Division of Environmental Science and Ecological EngineeringKorea UniversitySeoulKorea Institute of Construction Materials Technische Universität Dresden01062 DresdenGermany Research Centre for Resources Engineering towards Carbon Neutrality The Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina

Biochar is a waste-derived material that can sequester carbon at a large *** development of low-carbon and sustainable biochar-enhanced construction materials has attracted extensive ***,having a porous nature and highly functionalised surface,can provide nucleation sites for chemical reactions and exhibit compatibility with cement,asphalt,and polymer *** study critically reviewed the state-of-the-art biochar-enhanced construction materials,including biochar-cement composites,biochar-asphalt composites,biochar-plastic composites,*** efficacies and mechanisms of biochar as construction materials were articulated to improve their functional *** critical review highlighted the roles of biochar in cement hydration,surface functional groups of engineered biochar for promoting chemical reactions,and value-added merits of biochar-enhanced construction materials(such as humidity regulation,thermal insulation,noise reduction,air/water purification,electromagnetic shielding,and self-sensing).The major properties of biochar are correlated to the features and functionalities of biochar-enhanced construction *** advances in our understanding of biochar’s roles in various composites can foster the next-generation design of carbon-neutral construction materials.

关键词： Engineered biochar Biomass waste management Carbon-negative materials Carbon neutrality Supplementary cementitious materials Sustainable construction

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Transforming disposable masks to sustainable gasoline-like fuel via pyrolysis

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environmental Advances 2024年 15卷

作者： Sari, Mega Mutiara Inoue, Takanobu Salsabilla, Vionna Chantika Septiariva, Iva Yenis Mulyana, Rahmad Prayogo, Wisnu Arifianingsih, Nur Novilina Suhardono, Sapta Suryawan, I. Wayan Koko Department of Environmental Engineering Faculty of Infrastructure Planning Universitas Pertamina Jakarta 12220 Indonesia Department of Architecture and Civil Engineering Toyohashi University of Technology Aichi Toyohashi 441-8580 Japan Civil Engineering Study Program Faculty of Engineering Universitas Sebelas Maret Jl. Ir. Sutami 36A Surakarta 57126 Indonesia Department of Civil Engineering Faculty of Engineering Universitas Negeri Medan North Sumatra Medan Indonesia Department of Environmental Engineering Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Bandung 40116 Indonesia Department of Environmental Science Universitas Sebelas Maret. Central Java Surakarta Indonesia

The past COVID-19 pandemic has led to a surge in the use of disposable masks, posing a significant environmental challenge due to the swift accumulation of waste. This study explores the potential of pyrolysis to transform this waste into valuable pyrolysis oil with characteristics akin to gasoline, addressing both waste management and energy derivation concerns. Pyrolysis, a thermal decomposition process, was applied to mask materials, producing an oil with a high calorific value of 45.93 MJ/kg. The chemical makeup of this pyrolytic oil was meticulously characterized using Pyrolysis-Gas Chromatography-Mass Spectrometry (PY-GC/MS) and Fourier-transform Infrared Spectroscopy (FTIR), confirming the presence of hydrocarbons similar to those found in gasoline. Achieving an efficiency of 41.865 %, the pyrolytic approach demonstrated a promising potential for not only managing mask waste but also creating an alternative energy carrier. However, the study advises that before considering this pyrolytic oil for engine use, a thorough evaluation of its combustion quality, engine compatibility, and environmental impact is essential. This investigation advances the discussion on sustainable waste management, offering insights into the generation of alternative fuels from daily waste streams, while also highlighting the necessity for comprehensive analyses to ensure the practicality and efficiency of such novel energy solutions. © 2023 The Author(s)

关键词： Alternative fuel sources Disposable masks Energy recovery techniques Medical waste valorization Thermochemical conversion

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Ozone Pollution Induced-Yield Loss of Major Staple Crops in China and Effects from Covid-19

SSRN

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SSRN 2024年

作者： Liu, Haiyang Tian, Hanqin Wang, Siyuan Chen, Guangsheng Feng, Zhaozhong Liu, Di Zhang, Wenxiu Pan, Shufen State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing China University of Chinese Academy of Sciences Beijing China College of Environmental and Resource Sciences Zhejiang A&F University Hangzhou311300 China School of Applied Meteorology Nanjing University of Information Science and Technology China Center for Earth System Science and Global Sustainability Department of Engineering and Environmental Studies Program Boston College Chestnut HillMA United States Center for Earth System Science and Global Sustainability Schiller Institute for Integrated Science and Society Department of Earth and Environmental Sciences Boston College Chestnut HillMA United States

Tropospheric ozone (O3) pollution can significantly affect crop yield. O3 concentrations are continuously rising in China. However, the long-term impacts of O3 pollution on crop yield over a long-term period have not yet well quantified due to the limitation of accurate spatiotemporal data and extrapolation methods. Based on a high resolution O3 dataset (HrSOD), here we analyzed the spatiotemporal O3 pollution patterns and their impacts on yield and resultant economic losses for wheat, rice, and maize in China during 2005-2020. Our results showed that daytime O3 concentrations (M7) increased by 2%, and AOT40 increased by 10% during 2005-2019. O3 trends diverged before and after China's 2013 Clean Air Action Plan between the southern and northern regions. Based on the observational data collected from literature and O3 gradient experiments in Asia, we fitted the O3 exposure-yield response curves, and then the relative yield loss (RYL) was assessed. Rising O3 pollution reduced national level wheat, rice and maize yields by 12.94-15.52%, 8.91-14.67%, and 4.13-4.9%, respectively, during 2005-2020. The O3-induced yield losses showed large spatiotemporal variations with higher losses in the northern China. Mean annual crop production losses reached 16.48 million tonnes (Mt) for wheat, 22.84 Mt for rice and 9.42 Mt for maize. The corresponding economic losses were USD 5.53 billion for wheat, 10.52 billion for rice and 1.70 billion for maize. While O3 declined across the southern China and the Tibetan Plateau, the northern China has witnessed an increased pollution and crop damage, highlighting the need for targeted mitigation policies in the northern China. Reduced O3 during 2020 COVID-19 lockdown period alleviated crop yield losses, demonstrating that curbing emissions could lessen damage. This long-term and high-resolution analysis provides robust evidence that rising O3 pollution has substantially affected China's staple cereal yields, causing considerable production an

关键词： COVID-19

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Investigation of Cyanobacteria-Hosted Antibiotic Resistance Genes in Cyanohab-Impacted Drinking Water Sources

SSRN

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SSRN 2025年

作者： Volk, Abigail Mills, Molly Chae, Soryong Lee, Jiyoung Division of Environmental Health Sciences College of Public Health The Ohio State University ColumbusOH United States Environmental Sciences Graduate Program The Ohio State University ColumbusOH United States Department of Chemical and Environmental Engineering University of Cincinnati CincinnatiOH United States Department of Food Science and Technology The Ohio State University ColumbusOH United States Infectious Diseases Institute The Ohio State University ColumbusOH United States

Freshwater cyanobacterial blooms (cyanoHABs) produce cyanotoxins that cause human and animal illness. cyanoHABs are also hypothesized to play a role in the antibiotic resistome, but whether Cyanobacteria host clinically-relevant antibiotic resistant genes (ARGs) in the environment is largely unknown. To investigate this emerging issue, we looked for the presence of Cyanobacteria-hosted ARGs using shotgun metagenomic sequencing of drinking water source samples collected during the 2022 bloom season from Lake Erie and Grand Lake St. Marys (GLSM). . ARGs were annotated using DeepARG and Resistance Gene Identifier (RGI). Cyanobacteria were annotated to host genes conferring possible antibiotic resistance. Two of these genes were rpoB2 and arlR, but these genes were likely spurious hits on housekeeping genes. qac and OXA genes were also annotated. While those hits suggest potential resistance to clinical antibiotics, overall Cyanobacteria did not host appreciable clinically-relevant ARGs. Because the two drinking water sources historically have high cyanotoxin concentrations, selected cyanotoxins, Cyanobacteria, and ARGs were chosen for quantification. We found high levels of Microcystis in Lake Erie and Planktothrix in GLSM, and high microcystin concentrations in GLSM, supporting previous trends in these water bodies. This study takes a novel approach pairing the issues of cyanoHABs and ARGs together in two drinking water sources. In a changing climate, drinking water treatment strategies should consider the treatment and public health implications of multiple contaminants. © 2025, The Authors. All rights reserved.

关键词： Lakes

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Cyclodextrin-modified layered double hydroxide thin-film nanocomposite desalination membrane for boron removal

Cyclodextrin-modified layered double hydroxide thin-film nan...

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2023 AIChE Annual Meeting

作者： Ee, Liang Ying Zhao, Qipeng Gao, Jie Lim, Chit Kai Xue, Kai Chin, Sze Yuet Li, Sam Fong Yau Chung, Tai-Shung Chen, Shing Bor Department of Chemical and Biomolecular Engineering College of Design and Engineering National University of Singapore 4 Engineering Drive 4 Singapore117585 Singapore Department of Chemistry College of Humanities and Sciences National University of Singapore 3 Science Drive 3 Singapore117543 Singapore Chemical Engineering Program Physical Science and Engineering Division King Abdullah University of Science and Technology Thuwal23955-6900 Saudi Arabia Centre of High Field NMR Spectroscopy and Imaging School of Physical and Mathematical Sciences College of Science Nanyang Technological University 21 Nanyang Link Singapore637371 Singapore NUS Environmental Research Institute National University of Singapore T-Lab Building 5A Engineering Drive 1 Singapore117411 Singapore Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei106335 Taiwan

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Insights into the removal of lithium and molybdenum from groundwater by adsorption onto activated carbon, bentonite, roasted date pits, and modified-roasted date pits

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Bioresource Technology Reports 2022年 18卷

作者： Ahmad, Ayesha Y. Al-Ghouti, Mohammad A. Khraisheh, Majeda Zouari, Nabil Environmental Science Program Department of Biological and Environmental Sciences College of Arts and Sciences Qatar University P.O. Box 2713 Doha Qatar Department of Chemical Engineering College of Engineering Qatar University P.O. Box 2713 Doha Qatar

This study investigated the removal of lithium (Li) and molybdenum (Mo) from groundwater using activated carbon, bentonite, roasted date pits, and modified-roasted date pits as adsorbents under different experimental parameters including pH, initial concentration, and temperature. Various adsorption isotherm models were used to determine the best-fit model for the obtained experimental data. The negative values of Gibbs energy (ΔG°) indicated a spontaneous and favorable adsorption process of the adsorption at high temperatures. The positive entropy values (ΔS°) that controlled the adsorption process suggested the possibility of some structural changes or readjustments in the adsorbate–adsorbent complex. The adsorption efficiency of Li increases at 35 °C using the four adsorbents. At 35 °C, the maximum adsorption efficiency reached 95% for AC, 94% using MDPs, 63% using bentonite, and 38% using RDPs. The modified-roasted date pits showed the highest adsorption of Mo in all real groundwater samples. The adsorption of Mo increased with the increase in concentrations, and its maximum removal at 25 °C was 80%. © 2022 The Authors

关键词： Groundwater

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Evidence for autotrophic growth of purple sulfur bacteria using pyrite as electron and sulfur source (vol 90, e00863, 2024)

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APPLIED AND environmental MICROBIOLOGY 2024年第9期90卷 e0086324页

作者： Alarcon, Hugo V. Mohl, Jonathon E. Chong, Grace W. Betancourt, Ana Wang, Yi Leng, Weinan White, Jason C. Xu, Jie Environmental Science Engineering Program the University of Texas at El Paso El Paso Texas USA Department of Mathematical Sciences the University of Texas at El Paso El Paso Texas USA Border Biomedical Research Center the University of Texas at El Paso El Paso Texas USA Department of Earth Environmental Resource Sciences the University of Texas at El Paso El Paso Texas USA The Connecticut Agricultural Experiment Station New Haven Connecticut USA The National Center for Earth Environmental Nanotechnology Infrastructure Blacksburg Virginia USA School of Molecular Sciences Arizona State University Tempe Arizona USA

Purple sulfur bacteria (PSB) are capable of anoxygenic photosynthesis via oxidizing reduced sulfur compounds and are considered key drivers of the sulfur cycle in a range of anoxic environments. In this study, we show that Allochromatium vinosum (a PSB species) is capable of autotrophic growth using pyrite as the electron and sulfur source. Comparative growth profile, substrate characterization, and transcriptomic sequencing data provided valuable insight into the molecular mechanisms underlying the bacterial utilization of pyrite and autotrophic growth. Specifically, the pyrite-supported cell cultures (“py”’) demonstrated robust but much slower growth rates and distinct patterns from their sodium sulfide-amended positive controls. Up to ~200-fold upregulation of genes encoding various c- and b-type cytochromes was observed in “py,” pointing to the high relevance of these molecules in scavenging and relaying electrons from pyrite to cytoplasmic metabolisms. Conversely, extensive downregulation of genes related to LH and RC complex components indicates that the electron source may have direct control over the bacterial cells’ photosynthetic activity. In terms of sulfur metabolism, genes encoding periplasmic or membrane-bound proteins (e.g., FccAB and SoxYZ) were largely upregulated, whereas those encoding cytoplasmic proteins (e.g., Dsr and Apr groups) are extensively suppressed. Other notable differentially expressed genes are related to flagella/fimbriae/pilin(+), metal efflux(+), ferrienterochelin(−), and [NiFe] hydrogenases(+). Characterization of the biologically reacted pyrite indicates the presence of polymeric sulfur. These results have, for the first time, put the interplay of PSB and transition metal sulfide chemistry under the spotlight, with the potential to advance multiple fields, including metal and sulfur biogeochemistry, bacterial extracellular electron transfer, and artificial photosynthesis.<>

关键词： Allochromatium vinosum anoxygenic photosynthesis cytochrome iron sulfur cluster purple sulfur bacteria pyrite transcriptomic sequencing

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