Academic literature on the topic 'MFA'

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Journal articles on the topic "MFA"

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Zaveri, Mehul, and Neha Kawathekar. "SYNTHESIS AND ANTIMALARIAL ACTIVITY OF SOME NEW 3-PHENYL-2-THIOXOTHIAZOLIDIN-4-ONE DERIVATIVES." International Journal of Current Pharmaceutical Research 9, no. 3 (2017): 58. http://dx.doi.org/10.22159/ijcpr.2017.v9i3.18897.

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Objective: Current therapies to treat P. falciparum malaria are heavily reliant on artemisinin-based combinations. However, resistance to artemisinin has recently been identified, and resistance to key artemisinin partner drugs is already widespread. Therefore, there is an urgent need for new antimalarial drugs with improved attributes over older therapies. The objective of this research work is to synthesize new antimalarial agents more effective against clinically relevant malarial strains.Methods: In present work, a series of ten 3-phenyl-2-thioxothiazolidin-4-one (MF1-MF10) derivatives, were synthesized by Knoevenagel condensation of N-phenyl rhodanine (I1) with substituted aromatic or hetro aromatic aldehydes using microwave irradiation. N-phenyl rhodanine (I1) was synthesized by a conventional reaction involving methyl-2-mercaptoacetate (1) and phenyl Isothiocyanates in presence of triethylamine. All the synthesized compounds were characterized by various spectroscopic techniques and evaluated for in-vitro antimalarial activity by microdilution technique against resistance strains of Plasmodium falciparum.Results: The antimalarial activity data showed that six compounds (MF1, MF3, MF4, MF5, MF7 and MF8) exhibited IC50 values ranging from 1.0-1.30 µg/ml, three compounds (MF2, MF6 and MF10) displayed IC50 values in the range of 0.9-1.0 µg/ml. Compound MF9 showed most significant result with maximum activity (IC50 = 0.85µg/ml).Conclusion: The antimalarial activity results revealed that compound MF9 possess potent activity and could be identified as a promising lead for further investigation.
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Kastberger, Gerald, Martin Ebner, and Thomas Hötzl. "Giant honeybees (Apis dorsata) trade off defensiveness against periodic mass flight activity." PLOS ONE 19, no. 4 (2024): e0298467. http://dx.doi.org/10.1371/journal.pone.0298467.

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The giant honeybee Apis dorsata (Fabricius, 1793) is an evolutionarily ancient species that builds its nests in the open. The nest consists of a single honeycomb covered with the bee curtain which are several layers of worker bees that remain almost motionless with their heads up and abdomens down on the nest surface, except for the mouth area, the hub between inner- and outer-nest activities. A colony may change this semi-quiescence several times a day, depending on its reproductive state and ambient temperature, to enter the state of mass flight activity (MFA), in which nest organisation is restructured and defense ability is likely to be suppressed (predicted by the mass-flight-suspend-defensiveness hypothesis). For this study, three episode of MFA (mfa1-3) of a selected experimental nest were analysed in a case study with sequences of >60 000 images at 50 Hz, each comprise a short pre-MFA session, the MFA and the post-MFA phase of further 10 min. To test colony defensiveness under normative conditions, a dummy wasp was cyclically presented with a standardised motion programme (Pd) with intervening sessions without such a presentation (nPd). Motion activity at five selected surveillance zones (sz1-5) on the nest were analysed. In contrast to mfa1,2, in mfa3 the experimental regime started with the cyclic presentation of the dummy wasp only after the MFA had subsided. As a result, the MFA intensity in mfa3 was significantly lower than in mfa1-2, suggesting that a colony is able to perceive external threats during the MFA. Characteristic ripples appear in the motion profiles, which can be interpreted as a start signal for the transition to MFA. Because they are strongest in the mouth zone and shift to higher frequencies on their way to the nest periphery, it can be concluded that MFA starts earlier in the mouth zone than in the peripheral zones, also suggesting that the mouth zone is a control centre for the scheduling of MFA. In Pd phases of pre- and postMFA, the histogram-based motion spectra are biphasic, suggesting two cohorts in the process, one remaining at quiescence and the other involved in shimmering. Under MFA, nPd and Pd spectra were typically Gaussian, suggesting that the nest mates with a uniform workload shifted to higher motion activity. At the end of the MFA, the spectra shift back to the lower motion activities and the Pd spectra form a biphasic again. This happens a few minutes earlier in the peripheral zones than in the mouth zone. Using time profiles of the skewness of the Pd motion spectra, the mass-flight-suspend-defensiveness hypothesis is confirmed, whereby the inhibition of defense ability was found to increase progressively during the MFA. These sawtooth-like time profiles of skewness during MFA show that defense capability is recovered again quite quickly at the end of MFA. Finally, with the help of the Pd motion spectra, clear indications can be obtained that the giant honeybees engage in a decision in the sense of a tradeoff between MFA and collective defensiveness, especially in the regions in the periphery to the mouth zone.
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SOUSA, Elane Sampaio de, Roberto Cesar De Mendonça BARBOSA, and Isaac Daniel RUDNITZKI. "Microfácies de carbonatos pensilvanianos da Formação Itaituba (Grupo Tapajós) no norte da Bacia do Amazonas, Urucará (AM)." Pesquisas em Geociências 48, no. 1 (2021): e092531. http://dx.doi.org/10.22456/1807-9806.92531.

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A aplicação de técnicas microfaciológicas em exposições de carbonatos da Formação Itaituba (Grupo Tapajós), situados na borda norte da Bacia do Amazonas, permitiu contribuir na reconstituição paleogeográfica do Pensilvaniano da bacia, uma vez que as principais interpretações da unidade são baseadas em dados da borda sul devido a facilidade logística de acesso em condições amazônicas. A análise microfaciológica em 80 seções delgadas de uma sucessão carbonática de aproximadamente 30 m permitiu a individualização de 10 microfácies (MF): Mudstone recristalizado (MF1), Mudstone/wackestone com intraclastos (MF2), Mudstone/ wackestone com terrígenos (MF3), Dolomudstone/wackestone (MF4), Dolowackestone/ packstone com peloides (MF5), Wackestone/packstone bioclástico com foraminíferos (MF6), Packstone/grainstone oolítico (MF7), Grainstone com peloides (MF8), Grainstone com ooides rescristalizados (MF9) e Grainstone bioclástico (MF10). As microfácies foram agrupadas em 4 zonas faciológicas que remetem a instalação de uma plataforma carbonática com amplas planícies de marés com precipitação carbonática e evaporítica (sabkha), lagunas com circulação restrita e barras oolíticas/bioclásticas. Espessos depósitos interpretados como sabkha sugerem condições mais evaporíticas da plataforma carbonática quando comparados com exposições da borda sul da bacia. Os dados levantados nessa pesquisa, possuem caráter inédito e reforçam interpretações paleoambientais anteriores para a borda sul e auxiliam no refinamento da reconstrução das condições paleogeográficas da Formação Itaituba.
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Sakae, Kotaro, Keiji Nagano, Miyuna Furuhashi, and Yoshiaki Hasegawa. "Diversity analysis of genes encoding Mfa1 fimbrial components in Porphyromonas gingivalis strains." PLOS ONE 16, no. 7 (2021): e0255111. http://dx.doi.org/10.1371/journal.pone.0255111.

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Porphyromonas gingivalis, a gram-negative anaerobic bacterium, is associated with the development of periodontal disease. The genetic diversity in virulence factors, such as adhesive fimbriae, among its strains affects the bacterial pathogenicity. P. gingivalis generally expresses two distinct types of fimbriae, FimA and Mfa1. Although the genetic diversity of fimA, encoding the major FimA fimbrilin protein, has been characterized, the genes encoding the Mfa1 fimbrial components, including the Mfa1 to Mfa5 proteins, have not been fully studied. We, therefore, analyzed their genotypes in 12 uncharacterized and 62 known strains of P. gingivalis (74 strains in total). The mfa1 genotype was primarily classified into two genotypes, 53 and 70. Additionally, we found that genotype 70 could be further divided into two subtypes (70A and 70B). The diversity of mfa2 to mfa4 was consistent with the mfa1 genotype, although no subtype in genotype 70 was observed. Protein structure modeling showed high homology between the genotypes in Mfa1 to Mfa4. The mfa5 gene was classified into five genotypes (A to E) independent of other genotypes. Moreover, genotype A was further divided into two subtypes (A1 and A2). Surprisingly, some strains had two mfa5 genes, and the 2nd mfa5 exclusively occurred in genotype E. The Mfa5 protein in all genotypes showed a homologous C-terminal half, including the conserved C-terminal domain recognized by the type IX secretion system. Furthermore, the von Willebrand factor domain at the N-terminal was detected only in genotypes A to C. The mfa1 genotypes partially correlated with the ragA and ragB genotypes (located immediately downstream of the mfa gene cluster) but not with the fimA genotypes.
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Rajabi, Peiman, and Imad Ghafor. "Stratigraphy, Microfacies, Paleoenvironments and Paleoecology of Asmari Formation (Oligocene - Miocene), Zagros Basin, Western Iran." Iraqi Geological Journal 57, no. 2C (2024): 210–29. http://dx.doi.org/10.46717/igj.57.2c.15ms-2024-9-23.

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The present work involves the study of the Asmari Formation from the viewpoint of the stratigraphy, microfacies, and depositional environment. The Khorramabad area, Zagros basin, west Iran, has been investigated for the first time. For this purpose, seventy-three samples were taken from the Shurab section. Eight microfacies have been identified in the Asmari Formation: Sandy wackestone (MF1), Peloidal Mudstone (MF2), Bioclastic milina Wackestone-Packstone (MF3), Bioclastic imperforate foraminifera Wackestone-Packstone (MF4), Coral boundstone (MF5), Bioclastic packstone - grainstone (MF6), Bioclastic imperforate foraminifera grainstone (MF7), Mudstone microfacies (MF8). Two benthic foraminiferal biozones were recognized, which are Archaias asparagus- Archaias Henson Assemblage Zone, which is restricted to Chattian, and the Eulepidina- Miogypsina Assemblage Zone, which is restricted to Aquitanian. The biostratigraphic correlation with other studies in and outside Iran, executed across the studied section, enveloping the Chattian to Aquitanian, divulges a progression in the biozone thickness, indicating a migration of the depositional center towards the northwest of the basin. The Asmari Formation is deposited from an outer ramp and open shelf lagoon and is defined as a tropical environment.
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Wang, Fang, Greg W. Dicinoski, Yan Zhu, and Paul R. Haddad. "Simultaneous Determination of Fluoroacetates, Chloroacetates, and Bromoacetates in Soil Samples by Ion Chromatography." Australian Journal of Chemistry 57, no. 10 (2004): 1005. http://dx.doi.org/10.1071/ch04067.

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A comparative study was made of the chromatographic behaviour of nine haloacetic acids, namely mono-, di-, and tri-fluoroacetate (MFA, DFA, and TFA, respectively); mono-, di-, and tri-chloroacetate (MCA, DCA, and TCA, respectively); and mono-, di- and tri-bromoacetate (MBA, DBA, and TBA, respectively), employing anion-exchange chromatography with suppressed conductivity and UV detection, using a Dionex AS17 anion-exchange column employed with a potassium hydroxide gradient (via a Dionex EG40 Eluent Generator). All nine haloacetic acids were completely separated under the optimized gradient elution conditions, and use of selective detection methods or pretreatment with an OnGuard II Ag cartridge resulted in the elimination of interferences from chloride and bromide occurring in soil samples. The procedure for the simultaneous determination of the nine haloacetic acids was simple and rapid. The method detection limits for MFA, DFA, TFA, MCA, DCA, TCA, MBA, DBA, and TBA were 21, 40, 40, 28, 48, 86, 67, 55, and 160 μg L−1, respectively. Application of this method to the determination of haloacetic acids in real soil samples is illustrated.
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&NA;. "MFA Newsbriefs." ACSM's Health & Fitness Journal 10, no. 3 (2006): 3. http://dx.doi.org/10.1249/00135124-200605000-00003.

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&NA;. "MFA Newsbriefs." ACSM's Health & Fitness Journal 10, no. 4 (2006): 3. http://dx.doi.org/10.1249/00135124-200607000-00003.

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&NA;. "MFA Newsbriefs." ACSM's Health & Fitness Journal 10, no. 5 (2006): 3. http://dx.doi.org/10.1249/01.fit.0000244884.86630.71.

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&NA;. "MFA Newsbriefs." ACSM's Health & Fitness Journal 10, no. 6 (2006): 3. http://dx.doi.org/10.1249/01.fit.0000252523.82735.7a.

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Dissertations / Theses on the topic "MFA"

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Porobic, Damir Verona. "MFA thesis exhibition." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4189.

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Thesis (M.F.A.)--West Virginia University, 2005.<br>Title from document title page. Document formatted into pages; contains vi, 30 p. : ill. (some col.). Includes a video file in the QuickTime format. Includes abstract. Includes bibliographical references (p. 30).
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Cuevas, Santamaría Sergio Axel. "My MFA Experience." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1524073680662621.

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Caudill, Ross Steven. "Ross Caudill MFA Sculpture 2006." VCU Scholars Compass, 2006. http://scholarscompass.vcu.edu/etd/1407.

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This thesis overviews my experience during graduate school making tangible,object oriented sculpture. I have been working formally to compose space in a way that develops a narrative between parts. The work is also a bridge between the fields of painting and sculpture, in terms of drawing with form and both painted and local, material color. My palette has mostly consisted of bronze casting, steel fabrication, fiberglass and epoxy resin, paint, the found object, woodworking, and mold making. This work is also conceptually based in showing the hand worked qualities of the materials, the transfer of meaning through casting, and my emotional relationship with the various parts of the sculptures. The three major themes of the work are: divine love and the complex of the apocalypse, the complexities and psychology concerning the relationship between a man and a woman, and the intrigue, potential energy, and beauty of the systems mankind hasinvented to harness the atom. The major artistic influences for this body of work have been: Jasper Johns, Marcel Duchamp, Constantine Brancusi, Alberto Giacommetti, Reg Butler, Henry Moore, Lynn Chadwick, Kenneth Armitage, Jeff Koons, Terry Winters, William DeKooning, Richard Diebenkorn, David Smith and Charles Long. I retain a strongrelationship with the movements of Dada, Surrealism, Futurism, and Assemblage, and amalso currently involved in solidifying the Manifesto of Raubeaux with a small group ofesteemed colleagues.
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Jilka, Milan. "Artistic Learning in an MFA Community." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1538710/.

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The purpose of this phenomenographical case study is to explore the ways in which a group of MFA students conceive of their learning as they are enmeshed within an MFA community. The research follows along two guiding research questions: 1) What does artistic learning involve for graduate students in an MFA community? 2) How is one's artistic practice shaped by one's active participation in an MFA community? The findings of this study have been presented as lines of artistic learning and help to show the various conceptions that MFA students have of their learning as artists while in an MFA program of study. Ultimately, it is in better understanding one's lines of artistic learning that MFA students can be better supported in their journeying to become professional, practicing artists.
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Wessman, Stina. "MFA thesis Stina Wessman : BäddBoken sängliggande aktiviteter." Thesis, Konstfack, Experience Design, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-3039.

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Kundert-Gibbs, Kristin. "Cincinnati: A Documentation of an MFA Recital." The Ohio State University, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=osu1392808616.

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Godman, Nicola. "Tricky Tales : MFA Essay by Nicola Godman." Thesis, Konstfack, Institutionen för Konst (K), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-7738.

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This essay is a reflection on various layers which inform my artistic practice, and particularly expands on the background and research for my short film The Spirit, The Lamp &amp; The Permanent Inhabitant. It's an attempt to describe how certain parts of my Gotlandic background influence and inspire my artistic practice, and also to show how reading, writing and critical reflection are important parts of my process. The essay pays tribute to an oral storytelling tradition that can be found on the island Gotland, Sweden, but is also an examination into how tourism has affected human relationships, and speculatively, the relationship between humans and ancient spirits.
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Malandra, Allyson Jean. "How I failed to get my MFA." Thesis, University of Iowa, 2015. https://ir.uiowa.edu/etd/1687.

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This is the thorough examination of Allyson Malandra's process of becoming a character, and the many different challenges and triumphs she has faced throughout the past three years of developing her craft. It also aims to bring into focus where the work will be headed throughout the many years to come. The goal of this process paper is to examine the many different details and intricacies that go into a role, and also how to troubleshoot problems that may arise throughout the journey. Our process is how we, as actors, attempt to create life on stage, and discover and unfold the underlying truth that connects all human beings. It is understood that each role for an actor will present a different set of chges, and therefore it is important to understand a baseline process that gets at the core of the actor's work. Through examination of this process, previous and current chges in the work will be discussed, as well as ways to move through these issues. Ideas on what is valuable in acting will be discussed, as a way of staying centered and focused, and also retaining quality in the craft. The examination will also explore three main pillars of the work--breathe, listen, and play--and how these anchor Allyson's artistry. The ultimate goals of this examination are to create a support for the process, to chge her work in the future, and to help her continue to grow and expand, both as an artist and as a person.
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Elston, Ken D. "Written Record for an MFA Showcase Production in Acting." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1392212218.

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Sjöberg, Gustav. "MFA för att öka produktiviteten av 3HB av rekombinant E.coli." Thesis, KTH, Skolan för bioteknologi (BIO), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-163703.

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Books on the topic "MFA"

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Faini, Riccardo. A primer on the MFA maze. Centre for Economic Policy Research, 1992.

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Faini, Riccardo. A primer on the MFA maze. Country Economics Dept., World Bank, 1993.

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Woldekidan, Berhanu. Mauritian clothing exports without the MFA. Research School of Pacific Studies, ANU, 1992.

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Spinanger, Dean. Textiles beyond the MFA phase-out. University of Warwick, 1998.

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Whalley, John. The post MFA performance of developing Asia. National Bureau of Economic Research, 2006.

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Whalley, John. The post MFA performance of developing Asia. National Bureau of Economic Research, 2006.

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Lacewing, Green. Poetry MFA: A Zine About Grad School. Green Lacewing, 2011.

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Workshop, New York Writers, ed. The portable MFA in creative writing: Improve your craft with the core essentials taught to MFA students. Writer's Digest Books, 2006.

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America, College Art Association of. Directory of MFA programs in the visual arts. College Art Association, 1999.

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Yang, Yongzheng. The MFA, world markets, and East Asian exporters. Research School of Pacific Studies, ANU, 1992.

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Book chapters on the topic "MFA"

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Taylor, Timothy. "MFA vs. NYC vs. MBA." In Teaching Creative Writing in Canada. Routledge, 2024. http://dx.doi.org/10.4324/9781032614144-17.

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Jazmin, Lara J., John P. O’Grady, Fangfang Ma, Doug K. Allen, John A. Morgan, and Jamey D. Young. "Isotopically Nonstationary MFA (INST-MFA) of Autotrophic Metabolism." In Plant Metabolic Flux Analysis. Humana Press, 2013. http://dx.doi.org/10.1007/978-1-62703-688-7_12.

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Hicks, Richard M. "Azure MFA Integration." In Implementing Always On VPN. Apress, 2021. http://dx.doi.org/10.1007/978-1-4842-7741-6_9.

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Deshpande, Paritosh C., and Arron W. Tippett. "Application of Material Flow Analysis: Mapping Plastics Within the Fishing Sector in Norway." In Business Transitions: A Path to Sustainability. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-22245-0_17.

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AbstractPlastic in our marine environment is now ubiquitous. Abandoned lost or otherwise discarded fishing gear (ALDFG) is of particular concern due to its ability to continue to function as a trap for marine organisms. In order for decision makers to act on this grave issue, we require data on the flow of ALDFG into the marine environment. One key tool for revealing the flow of material within a specific system is Material Flow Analysis (MFA). MFA takes a life cycle approach (cradle to grave) to assess energy or material flows in a system within space and time boundaries. It can be applied at multiple levels from the industrial process level to the national level. This chapter presents a case study of an MFA conducted on fishing gear in Norway. The MFA methodology was used in this case study to assess the flow of plastic fishing gear from production through to recycling, final disposal or loss to the marine environment. Data was collected for the MFA through stakeholder interviews, literature reviews and analysis of government data sets. The MFA revealed that around 4000 tons of plastic fishing gear enters the system in Norway and around 400 tons enter the marine environment each year. An analysis of the implications of the MFA for the key actors within the life cycle chain of fishing gear is presented and a short description of the links between MFA and the circular economy and sustainable development is provided. Furthermore, the relevance and implications of using MFA tool for policy making at national and regional level is discussed and elaborated while associated challenges are presented here.
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Eichel, Hans Werner. "Funktionsdiagnostik durch die MFA." In Arbeitsplatz HNO-Praxis. Springer Berlin Heidelberg, 2025. https://doi.org/10.1007/978-3-662-70502-5_5.

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Lu, Suihua, and Aubrey B. Poore. "Network-Centric MFA Tracking Architectures." In Cooperative Systems. Springer US, 2003. http://dx.doi.org/10.1007/978-1-4757-3758-5_10.

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Bashford, David. "Tetrafluoroethylene and Perfluoromethylvinylether Copolymer (MFA)." In Thermoplastics. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-1531-2_41.

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Murphy, Christopher. "The Illusion of MFA Compliance." In Apress Pocket Guides. Apress, 2025. https://doi.org/10.1007/979-8-8688-1240-8_10.

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Fet, Annik Magerholm, and Paritosh C. Deshpande. "Closing the Loop: Industrial Ecology, Circular Economy and Material Flow Analysis." In Business Transitions: A Path to Sustainability. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-22245-0_11.

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AbstractThis chapter explores the principles supporting industrial ecology (IE), circular economy (CE) and material flow analysis (MFA). IE concerns constructing industrial and societal processes according to ecological principles. One of the main features within IE is the principle of closing material loops by avoiding pollution. Insights from IE further aid in building the understanding essential for establishing the principles of circularity in the resource economy. MFA is viewed as an analytical method rooted in the field of IE and Systems Engineering (SE).
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Bastos, Joana, and Leonardo Rosado. "Regional Metabolism: A Material and Product Flow Accounting Model for Trentino, Italy." In Smart and Sustainable Planning for Cities and Regions. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-39206-1_4.

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AbstractMaterial flow accounting (MFA) can be applied to systematically quantify material inputs, outputs and throughputs to and from a geographical area, providing particularly relevant insights into managing resource flows and stocks, and identifying opportunities to close material cycles, moving from a linear to a circular economy. Remarkable advances in recent years have been made on the application of MFA to regions and cities, in particular going beyond material to product flows and providing increased details on life-cycle stages of products across these flows, which are crucial to estimate, understand and manage their associated environmental impacts. This chapter presents an MFA model of the Autonomous Province of Trento (Trentino) in northern Italy, and of the province’s capital city Trento. The main purpose is to establish a model to estimate direct material inputs (DMI) and domestic material consumption (DMC) in thousand tonnes per year (reference year 2019), relying on publicly available online data on domestic resource extraction, industrial production, trade, freight transportation and waste generation. The DMC was 12.8 and 13.5 tonnes per capita in the province and in Trento, respectively; the result is below the EU mean of 14.2, but significantly higher than the reported DMC for Italy in the same year of 8.3 tonnes per capita. Accounting and characterizing resource flows associated with urban areas and regions is crucial to increase resource efficiency and mitigate environmental impacts at local, regional and global levels. Advanced detailed MFA models at city and regional levels can inform and support environmentally sustainable planning and policymaking.
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Conference papers on the topic "MFA"

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Biressi, Giovanni, and J. Karol Argasinski. "New Perfluoroalkoxy Resins for the Chemical Process Industry: a Reliable Solution in Corrosive Environments." In CORROSION 2009. NACE International, 2009. https://doi.org/10.5006/c2009-09330.

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Abstract In an effort to address the Chemical Processing Industry (CPI) market demands for effective corrosion protection and friendlier processing, new grades of lower melting point perfluoro-alkoxy resin, also known as MFA, have been developed recently. MFA belongs to the generic class of PFA fluoropolymers as specified in the ASTM D3307. It has a 30-40°C lower melting point when compared to type I-III, traditional PFA resins with comparable mechanical properties, chemical resistance, and permeability. PFA resins are commonly used in corrosion protection applications such as the coatings and linings of process vessels, storage tanks, pipes, and valves and fittings. They can successfully replace metals in several free-standing applications. The excellent performance/price ratio of MFA fluoropolymers makes them very attractive in CPI applications.
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Magdzinski, Leon, and Rafic Moubarac. "ECTFE and MFA: Less Permeation and More Safety in Sodium Chlorate Plants." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00544.

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Abstract The dual laminate, poly (ethylene-chlorotrifluoroethylene) / fiber-reinforced plastic (ECTFE/FRP), has proven successful in providing leak-free performance in many sodium chlorate manufacturing plants. ETCFE/FRP chlorate electrolytic cells, gas collectors, pipes, and chlorine scrubbers have operated for over eighteen years, outlasting titanium in similar applications. ECTFE-lined steel pipes have replaced CPVC, FEP, PVDF and other corrosion-resistant polymers due to ECTFE low permeability in hydrogen gas lines at temperatures as high as 95°C. A new fluoropolymer, poly (perfluoromethylvinyl ether-tetrafluoroethylene) (MFA), has been introduced for scrubbers and chlorate cells. MFA offers increased corrosion protection against high chlorine concentrations at elevated temperatures and is ideal for most sodium chlorate and chlor-alkali applications.
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Saputra Dalimunthe, Ade Lingga, Teddy Mantoro, Rika Wijiyanti, and Muhayatun Santoso. "Cybersecurity Vulnerabilities in Smartwatches as Health Devices using Multi-Factor Authentication (MFA)." In 2024 10th International Conference on Computing, Engineering and Design (ICCED). IEEE, 2024. https://doi.org/10.1109/icced64257.2024.10983384.

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Pandey, Pravin. "AI-Enabled Multi-Factor Authentication (MFA) Systems for Private and Public Cloud Security." In 2025 International Conference on Electronics and Renewable Systems (ICEARS). IEEE, 2025. https://doi.org/10.1109/icears64219.2025.10941462.

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Li, Zhiduo, Fukun Bi, Zhihao Che, Mengjie Kou, and Xiaoci Li. "MFA-Encoder: A Multilevel Feature-Aware Hybrid Encoder for Object Detection in Optical Remote Sensing Images under DETR Architecture." In IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2024. http://dx.doi.org/10.1109/igarss53475.2024.10642057.

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Conde, Maria, and Claes Taxén. "Hydrochloric Acid and Water Permeability in Fluoropolymer Tubes." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00572.

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Abstract The permeability factor (P, g∙mm/m2∙d) and the solubility coefficient (S, weight %) of water and hydrochloric acid solutions at 70°C enclosed in plastic tubes have been measured using gravimetric techniques. The materials in the tubes were commercial grades of the fluoropolymers PTFE, MFA and PFA. The experimental data of the mass decrease of the tubes as a function of time were treated using a numerical curve-fitting procedure to estimate the separate water and hydrochloric acid permeability of the materials. The numerically-calculated curves and the experimental data points for the HCl solutions showed good agreement. For the 5% and 15% HCl solutions, the mass decrease of the tubes was due to permeation of water. In the 25% HCl solution the mass decrease of water was about four times higher than that of HCl. The concentration of the 35% HCl solution decreased to 28-30%, which indicated dominant permeation of the HCl component. The permeability factors of the materials (P) showed a minimum for the 25% HCl solution. This minimum in P is not an optimum condition for the use of the polymer as lining, because any permeation of HCl is detrimental with respect to the corrosion of the underlying substrate.
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Miletovic, I., M. Wentink, D. Pool, et al. "The Use of Pilot Ratings in Rotorcraft Flight Simulation Fidelity Assessment." In Vertical Flight Society 73rd Annual Forum & Technology Display. The Vertical Flight Society, 2017. http://dx.doi.org/10.4050/f-0073-2017-12107.

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The fidelity of a rotorcraft flight simulator is influenced by many factors, such as the vehicle dynamic model and the motion cueing algorithm (MCA). To quantify the fidelity of a simulator objectively requires detailed knowledge of human pilot perception and control behaviour that is not yet available. As a consequence, subjective assessments made by qualified pilots remain the most important way to assess flight simulation fidelity. The use of standardized rating scales during such assessments can increase the level of objectivity above that provided by less structured evaluations. The current paper describes the result of an experiment performed on the Desdemona simulator to evaluate two rating scales, namely the Simulator Fidelity Rating (SFR) scale and the Motion Fidelity Rating (MFR) scale, as suitable indicators of flight simulation fidelity. In this experiment, two characteristics of the simulated environment were varied, namely rotorcraft dynamics and MCA configuration, and the type of rating scale used was treated as an additional independent variable. The primary results of the experiments suggest that pilots are able to recognize a strong decline in flight simulation fidelity when both rotorcraft dynamics and motion are degraded simultaneously. However, when either one of these characteristics are varied independently of the other, the results are inconclusive. The paper presents a more detailed review of the various results gathered during the experiment and formulates recommendations for future experiments in rotorcraft flight simulation fidelity assessment that involve the use of pilot ratings.
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Ondyak, James, James Noland, and Parag Shah. "Impact of Unreacted Mea-Triazine on Refinery Operation." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16832.

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Abstract When oil producers or shippers treat for H2S removal, the market share leading chemistry is MEA-triazine. The reaction to capture H2S generates monoethanolamine (MEA) as a byproduct and also requires a stoichiometric excess of MEA-triazine to control H2S to the desired level. The presence of a stoichiometric excess causes MEA-triazine contamination in the crude. This paper provides new information on the impact of unreacted MEA-triazine on the risk of overhead corrosion in the crude unit. The conclusion is that unreacted MEA-triazine is a contaminant of significant concern. Distillation studies on crude spiked with MEA-triazine provide insight on amine generation that results from thermal decomposition of MEA-triazine at crude column conditions. Extraction studies of MEA-triazine and MEA provide insight into the difficulty of removing these contaminants in the desalter. The concentration of these contaminants in the desalted crude cannot be measured accurately enough for controlling the risk of overhead corrosion, and desalting efficiency based on salt removal is not a reliable predictor of protection from MEA or from unreacted MEA-triazine in the crude. New monitoring and desalting solutions are presented to improve the ability of the refinery to protect against continuous or intermittent presence of MEA-triazine and MEA in the crude.
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Lu, Suihua, Aubrey B. Poore, and Brian J. Suchomel. "Network MFA tracking architectures." In International Symposium on Optical Science and Technology, edited by Oliver E. Drummond. SPIE, 2001. http://dx.doi.org/10.1117/12.492749.

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J, Ganesan, Prathipa S, and Anantha Kirishnan S. "Biometric MFA in Smart Automobiles." In 2023 Intelligent Computing and Control for Engineering and Business Systems (ICCEBS). IEEE, 2023. http://dx.doi.org/10.1109/iccebs58601.2023.10448689.

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Reports on the topic "MFA"

1

Nelson, J. V. Irradiation data for the MFA-1 and MFA-2 tests in the FFTF. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/16897.

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Nelson, J. V. Irradiation data for the MFA-1 and MFA-2 tests during FFTF cycles 10A and 10B. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/332177.

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Trela, Irene, and John Whalley. Do Developing Countries Lose From the MFA? National Bureau of Economic Research, 1988. http://dx.doi.org/10.3386/w2618.

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Whalley, John. The Post MFA Performance of Developing Asia. National Bureau of Economic Research, 2006. http://dx.doi.org/10.3386/w12178.

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Finger, J. Michael, and Ann Harrison. The MFA Paradox: More Protection and More Trade? National Bureau of Economic Research, 1994. http://dx.doi.org/10.3386/w4751.

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Evans, Carolyn, and James Harrigan. Tight Clothing: How the MFA Affects Asian Apparel Exports. National Bureau of Economic Research, 2004. http://dx.doi.org/10.3386/w10250.

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Herrington, Karen, David Walker, Eric Goodman, Jim Jokl, and Scott Cantor. Multi-Factor Authentication (MFA) Interoperability Profile Working Group Final Report. Internet2, 2016. http://dx.doi.org/10.26869/ti.36.1.

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Trela, Irene, and John Whalley. Internal Quota Allocation Schemes and the Costs of the MFA. National Bureau of Economic Research, 1991. http://dx.doi.org/10.3386/w3627.

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Koster, Tinka, Landry Fanou, Nina Bellini Motovska, Denis Muhangi, Ali Mahamadou, and Cor Wattel. End evaluation of the MFA-NL-supported NCEA programme 2017-2022. Wageningen Economic Research, 2022. http://dx.doi.org/10.18174/578904.

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Brambilla, Irene, Amit Khandelwal, and Peter Schott. China's Experience Under the Multifiber Arrangement (MFA) and the Agreement on Textiles and Clothing (ATC). National Bureau of Economic Research, 2007. http://dx.doi.org/10.3386/w13346.

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