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钛白粉厂废酸渣的表征及在水污染治理中的应用

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武汉理工大学学报 2010年第24期32卷 70-74页

作者：袁峥 grant douglas Laura Wendling 姜应和武汉理工大学土木工程与建筑学院武汉430070 澳大利亚联邦科工组织土壤和水研究院

试验对钛白粉厂石灰中和后的废酸渣进行了一系列的特性分析,并通过圆柱试验了解其对水中溶解性有机碳(DOC)和营养物质的去除能力。为了保证试验圆柱有良好的透水性,在废酸渣试验圆柱中添加了石英砂,并设置了石英砂对比圆柱。通过145 d试... 详细信息

试验对钛白粉厂石灰中和后的废酸渣进行了一系列的特性分析,并通过圆柱试验了解其对水中溶解性有机碳(DOC)和营养物质的去除能力。为了保证试验圆柱有良好的透水性,在废酸渣试验圆柱中添加了石英砂,并设置了石英砂对比圆柱。通过145 d试验,废酸渣/石英砂对水中DOC、TP、PO4-P、TN、NH3-N、NOx-N和DON的累计去除率分别为88.9%、94.9%、99.1%、63.5%、-107.3%、71.2%和77.7%,石英砂对水中DOC、TP、PO4-P、TN、NH3-N、NOx-N和DON的累积去除率分别为-0.3%、-50.1%、-44.8%、-10.8%、-298.2%、86.3%和-28.5%,通过计算得出废酸渣对水中DOC、TP、PO4-P、TN、NH3-N、NOx-N和DON的累积去除率分别为88.9%、96.6%、99.4%、67.1%、47.9%、-110.1%和82.7%。试验表明,钛白粉厂石灰中和后的废酸渣对水中的有机物和营养物质有很好的去除效果,尤其是对DOC、TP、PO4-P、TN、NH3-N和DON的去除,在水污染治理领域有很好的应用前景。

关键词：石灰中和后的废酸渣钛白粉厂溶解性有机碳营养物质水污染治理

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钢渣对水中有机物和营养物质去除的试验研究

河南城建学院学报 2010年第4期19卷 51-55页

作者：袁峥 grant douglas Laura Wendling 郭长虹武汉理工大学土木工程与建筑学院湖北武汉430070 澳大利亚联邦科工组织土壤和水研究院

论文对炼钢厂钢渣进行了一系列的特性分析,并通过圆柱试验了解其对水中溶解性有机碳(DOC)和营养物质的去除性能。为了保证试验圆柱良好的透水性,在试验圆柱中添加了石英砂,并设置了石英砂对比圆柱。通过64 d试验,钢渣对水中DOC、PO4-P... 详细信息

论文对炼钢厂钢渣进行了一系列的特性分析,并通过圆柱试验了解其对水中溶解性有机碳(DOC)和营养物质的去除性能。为了保证试验圆柱良好的透水性,在试验圆柱中添加了石英砂,并设置了石英砂对比圆柱。通过64 d试验,钢渣对水中DOC、PO4-P、TP、NH3-N、NOx-N、DON和TN的去除率分别为51%、99%、87%、-15%、32%、29%和23%,吸收容量分别为6 317 mg/kg1、35 mg/kg、126 mg/kg-、14 mg/kg2、7 mg/kg1、54 mg/kg和167 mg/kg。试验表明,钢渣对水中的有机物和营养物质有很好的去除效果。

关键词：钢渣溶解性有机碳营养物质水污染治理

钢铁、钛和铝工业废渣在去除水中重金属和酸性中的作用

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南昌大学学报（工科版） 2010年第2期32卷 168-172页

作者：袁峥 grant douglas Laura Wendling 姜应和武汉理工大学土木工程与建筑学院湖北武汉430070 澳大利亚联邦科工组织土壤和水研究院

选取钢铁工业废渣中的钒钛磁铁矿选铁尾矿渣、钒钛磁铁矿含钛高炉渣、普通高炉渣、钢渣,钛工业废渣中的钒钛磁铁矿选钛尾矿渣和铝工业废渣中的赤泥作为研究对象,通过圆柱试验以检验其对水中重金属Cd2＋、Co2＋、Cu2＋、Mn2＋、Ni2＋、Zn... 详细信息

选取钢铁工业废渣中的钒钛磁铁矿选铁尾矿渣、钒钛磁铁矿含钛高炉渣、普通高炉渣、钢渣,钛工业废渣中的钒钛磁铁矿选钛尾矿渣和铝工业废渣中的赤泥作为研究对象,通过圆柱试验以检验其对水中重金属Cd2＋、Co2＋、Cu2＋、Mn2＋、Ni2＋、Zn2＋和酸性的去除能力。这6种工业废渣对水中的Cd2＋的吸附容量为278~6 811 mg/kg,对Co2＋的吸附容量为127~6 052 mg/kg,对Cu2＋的吸附容量为442~53 566 mg/kg,对Mn2＋的吸附容量为95~5 594 mg/kg,对Ni2＋的吸附容量为158~6 213 mg/kg,对Zn2＋的吸附容量为151~6 710 mg/kg,对酸的中和容量为4.5~8.9 mol H＋/kg。工业废渣尤其是钢渣和赤泥在改善地下水酸性和去除矿业或工业废水中的重金属离子和酸性方面具有很好的应用前景,可以达到以废治废的目的。

关键词：工业废渣重金属酸性废水水污染治理

Seasonal variation and host sex affect bat–bat fly interaction networks in the Amazonian savannahs

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Integrative Zoology 2024年第3期19卷 400-416页

作者： Paulo MEJIA Gustavo Lima URBIETA Bruna da Silva XAVIER IsaíJorge de CASTRO JoséJúlio DE TOLEDO Gustavo GRACIOLLI Lucio AndréVIANA DIAS William douglas CARVALHO Programa de Pós-Graduação em Biodiversidade Tropical Universidade Federal do Amapá(UNIFAP)MacapáAPBrazil Programa de Pós-Graduação em Ecologia Instituto de BiologiaCentro de Ciências da SaúdeUniversidade Federal do Rio de Janeiro(UFRJ)Rio de JaneiroRJBrazil Laboratório de Mamíferos Instituto de Pesquisas Científicas e Tecnológicas do Estado do Amapá(IEPA)MacapáAPBrazil Programa de Pós-Graduação em Biologia Animal Laboratório de SistemáticaEcologia e Evolução(LSEE)Instituto de BiociênciasUniversidade Federal de Mato Grosso do Sul(UFMS)Campo GrandeMTBrazil Terrestrial Ecology Group(TEG-UAM) Departamento de EcologíaFacultad de CienciasUniversidad Autónoma de MadridMadridSpain Centro de Investigación en Biodiversidad y Cambio Global(CIBC-UAM) Universidad Autónoma de MadridMadridSpain

Bats are the second-most diverse group of mammals in the world,and bat flies are their main ***,significant knowledge gaps remain regarding these antagonistic interactions,especially since diverse factors such as seasonality and host sex can affect their network ***,we explore the influence of such factors by comparing species richness and composition of bat flies on host bats,as well as specialization and modularity of bat–bat fly interaction networks between seasons and adult host *** captured bats and collected their ectoparasitic flies at 10 sampling sites in the savannahs of AmapáState,northeastern region of the Brazilian *** female bats being more parasitized and recording greater bat fly species richness in the wet season,neither relationship was statistically *** pooled network could be divided into 15 compartments with 54 links,and all subnetworks comprised>12 *** total number of links ranged from 27 to 48(for the dry and wet seasons,respectively),and female and male subnetworks had 44 and 41 links,*** values were very low for the pooled network and for all *** results revealed higher bat fly species richness and abundance in the wet season,whereas specialization and modularity were higher in the dry ***,the subnetwork for female bats displayed higher specialization and modularity than the male ***,both seasonality and host sex contribute in different ways to bat–bat fly network *** studies should consider these factors when evaluating bat–bat fly interaction networks.

关键词： Amapá Amazon biome bat flies bats interaction networks

Oxidized organic molecules in the tropical free troposphere over Amazonia

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National Science Review 2024年第1期11卷 174-184页

作者： Qiaozhi Zha Diego Aliaga Radovan Krejci Victoria A.Sinclair Cheng Wu Giancarlo Ciarelli Wiebke Scholz Liine Heikkinen Eva Partoll Yvette Gramlich Wei Huang Markus Leiminger Joonas Enroth Otso Per?kyl? Runlong Cai Xuemeng Chen Alkuin Maximilian Koenig Fernando Velarde Isabel Moreno Tuukka Pet?j? Paulo Artaxo Paolo Laj Armin Hansel Samara Carbone Markku Kulmala Marcos Andrade douglas Worsnop Claudia Mohr Federico Bianchi Institute for Atmospheric and Earth System Research/Physics University of Helsinki Joint International Research Laboratory of Atmospheric and Earth System Sciences Nanjing University Department of Environmental Science & Bolin Centre for Climate Research Stockholm University Department of Chemistry and Molecular Biology University of Gothenburg Institute for Ion and Applied Physics University of Innsbruck Ionicon Analytik GmbH Laboratory for Atmospheric Physics Institute for Physics Research Universidad Mayor de San Andrés Institute of Physics University of Sao Paulo Institute for Geosciences and Environmental Research (IGE) University of Grenoble Alpes Agrarian Sciences Institute Federal University of Uberl?ndia Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Department of Atmospheric and Oceanic Sciences University of Maryland Aerodyne Research Inc. Department of Environmental System Science ETH Zürich Switzerland and Laboratory of Atmospheric Chemistry Paul Scherrer Institute

New particle formation(NPF) in the tropical free troposphere(FT) is a globally important source of cloud condensation nuclei, affecting cloud properties and climate. Oxidized organic molecules(OOMs)produced from biogenic volatile organic compounds are believed to contribute to aerosol formation in the tropical FT, but without direct chemical observations. We performed in situ molecular-level OOMs measurements at the Bolivian station Chacaltaya at 5240 m above sea level, on the western edge of Amazonia. For the first time, we demonstrate the presence of OOMs, mainly with 4–5 carbon atoms, in both gas-phase and particle-phase(in terms of mass contribution) measurements in tropical FT air from Amazonia. These observations, combined with air mass history analyses, indicate that the observed OOMs are linked to isoprene emitted from the rainforests hundreds of kilometers away. Based on particle-phase measurements, we find that these compounds can contribute to NPF, at least the growth of newly formed nanoparticles, in the tropical FT on a continental scale. Thus, our study is a fundamental and significant step in understanding the aerosol formation process in the tropical FT.

关键词： oxidized organic molecules tropical aerosol formation Amazon free troposphere

Optical redox imaging of ANT1-de-cient muscles

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Journal of Innovative Optical Health Sciences 2024年第1期17卷 135-140页

作者： He N.Xu Ryan M.Morrow Min Feng Huaqing Zhao douglas Wallace Lin Z.Li Britton Chance Laboratory of Redox Imaging Department of Radiology Perelman School of Medicine University of Pennsylvania PhiladelphiaPA 19104USA Center for Mitochondrial and Epigenomic Medicine Children's Hospital of Philadelphia Research Institute Philadelphia PA 19104USA Center for Biostatistics and Epidemiology Lewis Katz School of Medicine at Temple University Philadelphia PA 19140USA

Adenine nucleotide translocator(ANT)is a mitochondrial protein involved in the exchange of ADP and ATP across the mitochondrial inner *** plays a crucial role in cellular energy metabolism by facilitating the transport of ATP synthesized within the mitochondria to the *** isoform ANT1 predominately expresses in cardiac and skeletal *** or dysregulation in ANT1 have been implicated in various mitochondrial disorders and neuromuscular *** aimed to examine whether ANT1 deletion may affect mitochondrial redox state in our established ANT1-de-cient *** and quadriceps resected from age-matched wild type(WT)and ANT1-de-cient mice were snap-frozen in liquid *** Chance redox scanner was utilized to perform 3D optical redox *** sample underwent scanning across 3–5 *** averaging analysis showed no signi-cant differences in the redox indices(NADH,flavin adenine dinucleotide containing-flavoproteins Fp,and the redox ratio Fp/(NADH+Fp)between WT and ANT1-de-cient ***,quadriceps had higher Fp than hearts in both groups(p¼0:0004 and 0.01,respectively).Furthermore,the quadriceps were also more oxidized(a higher redox ratio)than hearts in WT group(p¼0:004).NADH levels were similar in all *** data suggest that under non-stressful physical condition,the ANT1-de-cient muscle cells were in the same mitochondrial state as WT ones and that the signi-cant difference in the mitochondrial redox state between quadriceps and hearts found in WT might be diminished in ANT1-de-cient *** imaging of muscles under physical stress can be conducted in future.

关键词： ANT1 redox ratio flavoproteins

Forest composition and red oak (Quercus sp.) response to elevation gradients across greentree reservoirs

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Forest Ecosystems 2023年第5期10卷 607-617页

作者： Cassandra Hug Pradip Saud Keith McKnight douglas C.Osborne College of Forestry Agriculturaland Natural ResourcesUniversity of Arkansas at MonticelloMonticelloAR71656USA USFWS/Lower Mississippi Valley Joint Venture TylerTX75707USA Five Oaks Ag Research and Education Center HumphreyAR72073USA

Elevation gradients within forested wetlands have long been recognized for their role in defining species composition through factors such as hydrology and soil *** reservoirs(GTRs)are leveeimpounded tracts of bottomland hardwood forest flooded throughout the winter months to provide habitat for overwintering *** flooding of GTRs alters the forest composition due to flood frequency,depth,and duration in combination with slight changes in *** evaluate the effect of elevation gradients,soil properties,and management techniques in the overstory species composition and red oak(Quercus spp.)species abundance,we inventoried 662 plots across 12 independent GTRs in eastern *** the lower elevations ranging from 50.98 to 54.99 m above sea level,the importance value index(IVI)was highest for nuttall oak(Quercus texana)and overcup oak(Quercus lyrata),whereas IVI shifted to cherrybark oak(Quercus pagoda)in the higher elevations ranging from 54.99 to 58.00 *** diversity did not differ by elevation gradient,soil property,or management technique within *** diversity,using non-metric multi-dimensional scaling(NMDS)analysis,indicated site-specific variability significantly correlated with the environmental predictors,including elevation(R^(2)=0.57),easting(R^(2)=0.47),soil texture(R^(2)=0.21),and pH(R^(2)=0.12).Red oak species-specific mixed-effects modeling of abundance response using Poisson distribution suggested an inverse correlation of nuttall oak and a direct correlation of cherrybark oak abundance with ***,willow oak(Quercus phellos)abundance was not significantly affected by elevation but was by silt loam soil texture and restoration management *** findings will aid management efforts to reduce the dominance of less desirable species that are prominent under specific environmental conditions and promote the dominance of more desirable *** GTR sustainability is increas

关键词： Bottomland hardwoods Diversity Forested wetland Overstory Red oak Soil Thinning and management

Bayesian optimization with active learning of design constraints using an entropy-based approach

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npj Computational Materials 2023年第1期9卷 1866-1879页

作者： Danial Khatamsaz Brent Vela Prashant Singh Duane D.Johnson douglas Allaire Raymundo Arróyave J.Mike Walker’66 Department of Mechanical Engineering Texas A&M UniversityCollege StationTX 77843USA Department of Materials Science and Engineering Texas A&M UniversityCollege StationTX 77843USA Ames Laboratory U.S.Department of EnergyIowa State UniversityAmesIA 50011USA Department of Materials Science&Engineering Iowa State UniversityAmesIA 50011USA Department of Industrial and Systems Engineering Texas A&M UniversityCollege StationTX 77843USA

The design of alloys for use in gas turbine engine blades is a complex task that involves balancing multiple objectives and *** alloys must be ductile at room temperature and retain their yield strength at high temperatures,as well as possess low density,high thermal conductivity,narrow solidification range,high solidus temperature,and a small linear thermal expansion *** Integrated Computational Materials Engineering(ICME)methods are not sufficient for exploring combinatorially-vast alloy design spaces,optimizing for multiple objectives,nor ensuring that multiple constraints are *** this work,we propose an approach for solving a constrained multi-objective materials design problem over a large composition space,specifically focusing on the Mo-Nb-Ti-V-W system as a representative Multi-Principal Element Alloy(MPEA)for potential use in next-generation gas turbine *** approach is able to learn and adapt to unknown constraints in the design space,making decisions about the best course of action at each stage of the *** a result,we identify 21 Pareto-optimal alloys that satisfy all *** proposed framework is significantly more efficient and faster than a brute force approach.

关键词： alloys solidification alloy

Morphological characterization, antioxidant capacity and diversity of Syzygium cumini trees from Sri Lanka

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Horticultural Plant Journal 2022年第1期8卷 53-67页

作者： Prasajith Kapila Dissanayake Wekumbure Gedara Chandima Wekumbura Alge Watage Wijeratne douglas Siril Abeywickrama Wijesundara Faculty of Agricultural Sciences Sabaragamuwa University of Sri LankaBelihuloya 70140Sri Lanka Department of Agronomy Throckmorton Plant Sciences CenterKansas State UniversityManhattanKS 66506USA National Institute of Fundamental Studies Kandy 20000Sri Lanka

Syzygium cumini(L.)Skeels(Madan)is widely distributed in South Asian countries,including Sri Lanka,where it was naturally *** were only few studies reported on *** for its values and other benefits in Sri *** study focuses on morphological characterization and the diversity of *** trees in seven locations of Sri *** were collected on different morphological ***,flower and fruit morphology showed significant differences among ***,trees from Batticaloa region showed different morphology,which would potentially open a different avenue for further study to trace different cultivars across the *** of the diversity index and multivariate analyses indicated high diversity in morphology and antioxidant capacity of *** variables such as leaf area,inter-nodal length,petiole length,anther length,filament length,fruit size and pericarp thickness could be suitable candidates to investigate the morphological variation of *** any *** capacity studies also showed significant differences among locations and *** hue angle was positively correlated to antioxidant *** of this study concluded that the wide distribution of *** trees throughout Sri Lanka in different geographical locations showed high diversity in leaf,flower and fruit morphology together with antioxidant capacity.

关键词： Syzygium cumini Morphological diversity Antioxidant capacity Sri Lanka