Showing 201 - 220 results of 267 for search '"EPA"', query time: 0.05s Refine Results
  1. 201

    Molecular Circuits of Resolution in the Eye by Elvira L. Liclican, Karsten Gronert

    Published 2010-01-01
    “…In addition to AA, the ω-3 polyunsaturated fatty acids (PUFAs) eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) also serve as substrates to generate potent and protective autacoids, such as resolvins and neuroprotectin (i.e., NPD1), respectively. …”
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  2. 202

    A Semi-portable Enclosure to Measure Emission Rates from Small Fugitive Sources: Leaf Blower Dust Example by Dennis Fitz, David Pankratz, Sally Pederson, James Bristow

    Published 2021-07-01
    “…The PM emission rates for most of these have not been measured due to the difficulty involved. The EPA addresses some fugitive emission rates in their AP-42 document and these generally were developed from upwind-downwind sampling. …”
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  3. 203

    Optimization and Validation of Thermal Desorption Gas Chromatography-Mass Spectrometry for the Determination of Polycyclic Aromatic Hydrocarbons in Ambient Air by Iñaki Elorduy, Nieves Durana, José Antonio García, María Carmen Gómez, Lucio Alonso

    Published 2018-01-01
    “…The performance of the method was tested by Standard Reference Material (SRM) 1649b urban dust and compared with the conventional method (Soxhlet extraction-GC/MS), showing a better recovery (mean of 97%), precision (mean of 12%), and accuracy (±25%) for the determination of 14 EPA PAHs. Furthermore, other 15 nonpriority PAHs were identified and quantified using their relative response factors (RRFs). …”
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  4. 204

    Prosociality in adolescents: an intervention experience by Claudia Regina de Freitas, Celso Stephan

    Published 2025-02-01
    “…The instrument used was the EPA-A (Prosocial Behavior Assessment Scale for Adolescents). …”
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  5. 205

    Heavy metals content in soils and cocoa tissues in Magdalena department Colombia: emphasis in cadmium by Sonia Esperanza Aguirre-Forero, Nelson Virgilio Piraneque-Gambasica, José Rafael Vásquez-Polo

    Published 2020-01-01
    “…El contenido medio de Ni, Pb y Cr en el tejido vegetal no excedió los límites máximos permisibles establecidos por la Agencia de Protección Ambiental (EPA) de los Estados Unidos. El contenido medio de Cd en los frijoles fue de 0,51 mg kg-1 en la región 1 y 0,66 mg kg-1 en la región 2, que se consideran riesgosos según los informes de la Unión Europea y restringen la exportación del producto. …”
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  6. 206

    Determination of the Percentage of Iron in River Rwabakazi From Source of Tributaries Around Kyase Iron Factory in Kabale Town. by Twesigomwe, Vicent

    Published 2025
    “…The recommended iron concentration in river water is 0.1-10 mg/l, 0.1-50 mg/l in groundwater, 0.01-0.1 mg/l in seawater, and 0.3-0.5 mg/l in drinking water according to WHO, EP, EPA, and IWBA. Thus the iron concentration in River Rwabakazi was found to be averagely higher than the recommended limit. …”
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  7. 207

    Striving for consistency in a national lake assessment: Defining reference status and littoral macroinvertebrate condition in lakes across the conterminous United States by Richard M. Mitchell, Alan T. Herlihy, Robert M. Hughes

    Published 2025-01-01
    “…We used data collected during the U.S. EPA’s National Lake Assessment between 2007–2022 to develop and validate a national macroinvertebrate multi-metric index (MMI) of lake condition across the conterminous U.S. …”
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  8. 208

    Defining “Adverse Environmental Impact” and Making § 316(b) Decisions: A Fisheries Management Approach by David E. Bailey, Kristy A.N. Bulleit

    Published 2002-01-01
    “…The process also employs risk assessment with stakeholder participation, in accordance with EPA’s Guidelines for Ecological Risk Assessment. …”
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  9. 209

    Screening 27 Genotypes of Eggplant (Solanum melongena) for Resistance to Three Species of Begomovirus by Dian Yogi Noviana, Rudi Hari Murti, Panjisakti Basunanda, Ratih Wahyuni, Mustika Ajeng Kartini Putri Pertiwi

    Published 2025-01-01
    “…The results indicated that EPA 21016 A genotype was resistant to TYLCKaV, with the lowest disease incidence (2.5%) and severity (1.25%), making it a promising parental line for breeding virus-resistant cultivars. …”
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  10. 210

    The EU Cooperation with South African Countries: Main Trends and Prospects for Development by Savchenko Maryna V., Apeniuk Anna I., Skladaniuk Darina M.

    Published 2024-06-01
    “…Particular attention is paid to the Economic Partnership Agreement between the EU and the countries of South Africa (SADC EPA) and its impact on trade relations. Changes in the trade balance between the EU and South Africa, in particular the impact of the COVID-19 pandemic on exports and imports, are studied. …”
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  11. 211

    Seasonal Dynamics in Bacteriological and Physicochemical Water Quality of the Southern Gulf of Lake Tana by Baye Sitotaw, Belayneh Daniel, Mulugeta Kibret, Workiye Worie

    Published 2022-01-01
    “…FC and biochemical oxygen demand (BOD5) in most sites did not meet the EPA standard for surface water. Corrective measures are highly recommended for anthropogenic activities driving high pollution loads in the lake.…”
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  12. 212

    Assessment of the Temporal and Spatial Variation of the Mercury Content of Lake Nokoué in Southern Benin Republic (West Africa) by Julien G. Adounkpe, N. B. Nadia Azon, Hermione W. Dégila, Peace Hounkpe, Robertson Amoussou

    Published 2021-01-01
    “…The assessment of total mercury is conducted by cold vapor atomic absorption according to the US EPA 7473 method, using a direct mercury analyzer (DMA-80). …”
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  13. 213

    Application of PS2M Aptamer as Receptor Layer for Electrochemical Detection of Lead Ions by Izabela Zaras, Olga Kujawa, Marcin Olszewski, Marta Jarczewska

    Published 2025-01-01
    “…The experiments revealed the possibility of lead ion detection from 50 to 600 nM, which covers the range below and above the maximum accepted limit stated by US EPA (72 nM). Moreover, the sensing layer exhibited high selectivity towards lead ions and was successfully applied both for the analysis of tap water spiked with Pb<sup>2+</sup> ions and as a miniaturized sensor. …”
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  14. 214

    Evaluation of atmospheric methane concentrations and growth trends in selected locations of Rivers State, Nigeria by Onwusameka Sonny Ogbowuokara, Tambari Gladson Leton, John Nwenearizi Ugbebor, Ochuko Felix Orikpete

    Published 2023-12-01
    “…The methodology combined descriptive, comparative, and regression analyses with plume chemistry modeling using the U.S. EPA Atmospheric Dispersion Modeling System software. …”
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  15. 215

    Investigation of Growth Performance, Proximate and Fatty Acid Composition of Freshwater (Euglena gracilis, Chlorella vulgaris) and Marine (Pavlova lutheri, Diacronema vlkanium) Mic... by Kamil Mert Eryalçın, Merve Sayar

    Published 2024-01-01
    “…Fatty acid compositions of microalgae were also determined. The highest EPA (C20:5n-3) content was found in Pavlova lutheri (6.85%) whereas arachidonic acid (C20:4n-6) and docosahexaenoic acid (C22:6n-3) contents were only found with a level of (3.32%) and (1.79%) in Euglena gracilis, respectively. …”
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  16. 216
  17. 217

    A Versatile SERS Sensor for Multiple Determinations of Polycyclic Aromatic Hydrocarbons and Its Application Potential in Analysis of Fried Foods by Shi Wang, Jie Cheng, Caiqin Han, Jianchun Xie

    Published 2020-01-01
    “…In this study, a SERS sensor composed of Au nanoparticles (AuNPs) and reoxidized graphene oxide (rGO) was developed for the simultaneous determination of 16 EPA priority PAHs. The synthesis of the rGO/AuNP substrate can be realized without a complicated modification process. …”
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  18. 218

    Issues with the Organic and Elemental Carbon Fractions in Recent U.S. Chemical Speciation Network Data by Philip K. Hopke, Yunle Chen, David Q. Rich, John G. Watson, Judith C. Chow

    Published 2023-05-01
    “…This factor is associated with aged secondary organic and inorganic species. The U.S. EPA changed the sampling and analytical protocols for its Chemical Speciation Network (CSN) in the 2007–2009 period to provide these well separated individual peaks in the thermogram for aerosol characterization, source apportionment, visibility, and health studies. …”
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  19. 219

    Assessing customer-side demand response identification for optimal scheduling considering satisfaction level for microgrids by Xidong Zheng, Feifei Bai, Tao Jin

    Published 2025-03-01
    “…The assessment reveals that the integrated classification and identification centre (ICIC) helps ensure 4.615 average electricity purchase cost assessment (EPCA) and 4.835 for electricity power assessment (EPA), which is higher than abnormal situations without machine learning-based identification. …”
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  20. 220

    Long-term Measurements of PM2.5 Concentrations in Lubbock, Texas by Mary C. Kelley, Mallory M. Brown, Clifford B. Fedler, Karin Ardon-Dryer

    Published 2020-04-01
    “…The majority of the average daily PM2.5 values fell below the Environmental Protection Agency (EPA) daily threshold of 35 µg m−3, but many days exhibited high hourly concentrations, mainly due to dust storm events. …”
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