Relevant bibliographies by topics / VFOA

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'VFOA'

Author: Grafiati
Published: 11 September 2023
Last updated: 26 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'VFOA.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "VFOA"

1

Liu, Yuanyuan, Xingmei Li, Fang Fang, Fayong Zhang, Jingying Chen, and Zhizhong Zeng. "Visual Focus of Attention and Spontaneous Smile Recognition Based on Continuous Head Pose Estimation by Cascaded Multi-Task Learning." International Journal of Pattern Recognition and Artificial Intelligence 33, no. 07 (2019): 1940006. http://dx.doi.org/10.1142/s0218001419400068.

Full text
Abstract:
Multi-person Visual focus of attention (M-VFOA) and spontaneous smile (SS) recognition are important for persons’ behavior understanding and analysis in class. Recently, promising results have been reported using special hardware in constrained environment. However, M-VFOA and SS remain challenging problems in natural and crowd classroom environment, e.g. various poses, occlusion, expressions, illumination and poor image quality, etc. In this study, a robust and un-invasive M-VFOA and SS recognition system has been developed based on continuous head pose estimation in the natural classroom. A
APA, Harvard, Vancouver, ISO, and other styles
2

Huang, Huajuan, Dao Tao, Xiuxi Wei, and Yongquan Zhou. "Adaptive Image Enhancement Algorithm Based on Variable Step Fruit Fly Optimization Algorithm and Nonlinear Beta Transform." Biomimetics 8, no. 2 (2023): 212. http://dx.doi.org/10.3390/biomimetics8020212.

Full text
Abstract:
Due to the traditional use of manual methods for the parameter adjustment of a nonlinear beta transform, which is inefficient and unstable, an adaptive image enhancement algorithm based on a variable step size fruit fly optimization algorithm and a nonlinear beta transform is proposed. Utilizing the intelligent optimization characteristics of the fruit fly algorithm, we automatically optimize the adjustment parameters of a nonlinear beta transform to achieve better image enhancement effects. Firstly, the dynamic step size mechanism is introduced into the fruit fly optimization algorithm (FOA)
APA, Harvard, Vancouver, ISO, and other styles
3

Indi, Chirag S., Varun Pritham, Vasundhara Acharya, and Krishna Prakasha. "Detection of Malpractice in E-exams by Head Pose and Gaze Estimation." International Journal of Emerging Technologies in Learning (iJET) 16, no. 08 (2021): 47. http://dx.doi.org/10.3991/ijet.v16i08.15995.

Full text
Abstract:
Examination malpractice is a deliberate wrong doing contrary to official examina-tion rules designed to place a candidate at unfair advantage or disadvantage. The proposed system depicts a new use of technology to identify malpractice in E-Exams which is essential due to growth of online education. The current solu-tions for such a problem either require complete manual labor or have various vulnerabilities that can be exploited by an examinee. The proposed application en-compasses an end-to-end system that assists an examiner/evaluator in deciding whether a student passes an online exam witho
APA, Harvard, Vancouver, ISO, and other styles
4

Vosper, J. V. "Maximum oscillation frequencies andftsensitivities of two groups of single-VFOA active-RC oscillators." International Journal of Electronics 88, no. 7 (2001): 759–72. http://dx.doi.org/10.1080/00207210110052874.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Liu, WenYan, and Zhen Wang. "Enhancing Martial Arts Safety Through 6G-Enabled Risk Assessment and Alert Systems." International Journal of Information System Modeling and Design 15, no. 1 (2024): 1–19. http://dx.doi.org/10.4018/ijismd.353158.

Full text
Abstract:
This paper proposes an advanced approach to enhance athlete safety in martial arts competitions by integrating 6G-enabled technologies with enterprise engineering and semantic integrity principles. Wearable sensors within a 6G network capture vital physiological data, such as temperature, pulse rate, opponent-induced force, and ECG signals. These data are analyzed using an Optimized Support Vector Risk Prediction Model (OSVRPM), optimized through the Vinegar Fly Optimization Algorithm (VFOA), to accurately assess athlete risk levels during competitions. Real-time alert messages, facilitated by
APA, Harvard, Vancouver, ISO, and other styles
6

Vijay, Laxmi Kalyani, and Sharma Tanisha. "Design And Simulation of CFOA Based Bubba Oscillator And Its Application." Journal of Management Engineering and Information Technology (JMEIT) 4, no. 5 (2017): 12–14. https://doi.org/10.5281/zenodo.1039337.

Full text
Abstract:
Bubba oscillator has the ability to generate the stable sine wave with low distortion using op-amp. The processing power of Bubba oscillator is quite small,therefore they often transmit in the frequency range from VHF to HF band. It is used in various application like mobile devices, power inverter, communication etc. In this paper we proposed a design of bubba oscillator using current feedback operational amplifiers (CFOA) at 12 MHz frequency. For this purpose we will use the AD844 IC and the simulation results are also shown along with ultiboard design and 3D-view of the proposed circuit.
APA, Harvard, Vancouver, ISO, and other styles
7

Wentz, Laurel M., P. S. Webb, and Kate Burks. "A Comprehensive Method of Assessing Body Composition Using Kinanthropometry in Human Performance Training." Journal of Special Operations Medicine 22, no. 2 (2022): 37. http://dx.doi.org/10.55460/vfoy-zeg6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Munro, Erin, and Nancy Kopell. "Subthreshold somatic voltage in neocortical pyramidal cells can control whether spikes propagate from the axonal plexus to axon terminals: a model study." Journal of Neurophysiology 107, no. 10 (2012): 2833–52. http://dx.doi.org/10.1152/jn.00709.2011.

Full text
Abstract:
There is suggestive evidence that pyramidal cell axons in neocortex may be coupled by gap junctions into an “axonal plexus” capable of generating very fast oscillations (VFOs) with frequencies exceeding 80 Hz. It is not obvious, however, how a pyramidal cell in such a network could control its output when action potentials are free to propagate from the axons of other pyramidal cells into its own axon. We address this problem by means of simulations based on three-dimensional reconstructions of pyramidal cells from rat somatosensory cortex. We show that somatic depolarization enables propagati
APA, Harvard, Vancouver, ISO, and other styles
9

Andrade, Maureen S. "International Student Persistence: Integration or Cultural Integrity?" Journal of College Student Retention: Research, Theory & Practice 8, no. 1 (2006): 57–81. http://dx.doi.org/10.2190/9my5-256h-vfva-8r8p.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Bernstein, Zale P., Stephen P. Brooks, Asher Chanan-Khan, et al. "Granulocyte-macrophage colony-stimulating factor (GM-CSF) restores allostimulatory function to accessory cells in patients with AIDS." HIV Clinical Trials 3, no. 3 (2002): 219–24. http://dx.doi.org/10.1310/hp8b-nf27-vfwa-80yx.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "VFOA"

1

Sundin, Anton. "Produktion av bioplast i Värmland? : Fermentering av olika avfallströmmar." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-36624.

Full text
Abstract:
Ett av världens största miljöproblem är plastnedskräpning. På många platser kan spår av mänsklig närvaro ses i form av skräp av plast. År 2011 tillverkades det 280 miljoner ton plast, det motsvarar ungefär 28 000 Eiffeltorn. I Sverige förbrukades år 2010 ungefär 880 000 ton plast. I Asien produceras ungefär 50 % av all världens plast och Kina står för cirka hälften av detta. Nordamerika och Europa står för cirka 40 % av världens plastproduktion. Resterande produktion av plast är fördelat på Afrika och Sydamerika. Kommersiell plast är uppbyggd av små enheter kallade
APA, Harvard, Vancouver, ISO, and other styles
2

Wogatai, Ulrika. "Förekomst av hyperopi bland hjälpsökande på en VFA-resa i Bolivia." Thesis, Linnaeus University, School of Natural Sciences, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-6076.

Full text
Abstract:
<p><strong>Syfte:</strong> Att undersöka förekomst av hyperopi i förhållande till läskunnighet hos hjälpsökande hos VFA i Bolivia, samt jämföra med studier från andra delar av världen.</p><p><strong>Metod:</strong> Studien utfördes i april 2010 på tre olika orter i centrala Bolivia. Patienterna sökte själva upp platsen för att få en undersökning. Subjektiv refraktion utfördes binokulärt, utan dimning, med hjälp av provbåge, provlåda och syntavla med Snellen E, uppsatt på 5 meters avstånd. Hyperopi räknades som sfärisk ekvivalent ≥ +1,00 D, myopi som ≤ –0,25 DS.</p><p><strong>Resultat:</strong>
APA, Harvard, Vancouver, ISO, and other styles
3

Restrepo, P. Ricardo J. "Dry matter digestibility and VFA production of selected feedstuffs using RUSITEC /." free to MU campus, to others for purchase, 1998. http://wwwlib.umi.com/cr/mo/fullcit?p9901273.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Noohi, Joobani Ali <1987&gt. "“VFA production from urban waste through acidogenic fermentation process: a machine learning approach”." Master's Degree Thesis, Università Ca' Foscari Venezia, 2022. http://hdl.handle.net/10579/21632.

Full text
Abstract:
Optimization of the dark fermentation process for the recovery of volatile fatty acids (VFA). The work is divided into pilot-scale fermentation tests on mixtures of sewage sludge and food residues, investigating different process parameters that influence fermentation yields. A machine learning approach will be used for data management and the development of a model that will be able to correlate the process performance (s) on the basis of different inputs (operational parameters).
APA, Harvard, Vancouver, ISO, and other styles
5

Lee, Sung Jae. "Relationship between Oxidation Reduction Potential (ORP) and Volatile Fatty Acid (VFA) Production in the Acid-Phase Anaerobic Digestion Process." Thesis, University of Canterbury. Civil and Natural Resources Engineering, 2008. http://hdl.handle.net/10092/1262.

Full text
Abstract:
The purpose of this research was to investigate the relationship between the oxidation-reduction potential (ORP) measurement and volatile fatty acid (VFA) production in the acid-phase anaerobic digestion process under different conditions of temperature and residence time. Two identical anaerobic digesters were operated while VFAs, SCOD, VSS, alkalinity, ORP and pH were measured. In digester 1, VFA production of 5,556 mg/L was generated with an ORP of -315 mv at a 10 day SRT; while 5,400 mg/L of VFA with an ORP of -389 mv was recorded in digester 2. The SRT was adjusted at 5, 8, 10, 12 and 15
APA, Harvard, Vancouver, ISO, and other styles
6

Häll, Sebastian, and Jani Körkkö. "Reducering av PIA och ledtider via VFA med upprätthållen leveranssäkerhet: en SME fallstudie inom tillverkningsindustrin." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-43723.

Full text
Abstract:
Bakgrund: Små-medelstora-företag (SME) har en viktig roll i dagens samhälle. SMEs står idag för en stor del av arbetsgivarsegmentet samt för en stor del av den ekonomiska utveckling som sker i Europa. Inom tillverkningsindustrin är en av utmaningarna att säkerställa robusta processer med hög kvalitet. För SMEs innebär det kontinuerlig uppföljning av de interna samt externa processerna för att hela tiden försäkra sig om att verksamheten följer uppsatta ramar, vilket generellt kan vara svårt eftersom tillgängliga resurser är begränsade. Andra utmaningar som tillverkande företag står inför är lån
APA, Harvard, Vancouver, ISO, and other styles
7

malekjahani, seyed. "THE EFFECTS OF PH ON ENHANCED BIOLOGICAL PHOSPHORUS REMOVAL (EBPR) WITH PROPIONIC ACID AS THE DOMINANT VOLATILE FATTY ACID (VFA)." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3712.

Full text
Abstract:
pH control is a tool to improve some aspects of Enhanced Biological Phosphorus Removal (EBPR) process. Filipe et al (2001a, 2001b, and 2001c) found strong evidence that the stability of EBPR systems can be improved by increasing the pH of the anaerobic zone, thereby creating conditions where phosphorus-accumulating organisms (PAOs) are able to take up acetate faster than glycogen-accumulating organisms (GAOs). They explained this observation by comparing the growth rate of phosphorus-accumulating organisms (PAOs) and glycogen-accumulating organisms (GAOs) and found that pH has little effect on
APA, Harvard, Vancouver, ISO, and other styles
8

Mallory, William, Rich Rivera, William Swinford, and BRB Consulting. "Improving Utilization of F/A-18 Simulator CUBIC Instructors at VFA-106, Naval Air Station Oceana, VA." Thesis, Monterey, California. Naval Postgraduate School, 2010. http://hdl.handle.net/10945/7062.

Full text
Abstract:
EMBA Project Report<br>EXECUTIVE SUMMARY: Strike Fighter Squadron ONE ZERO SIX (VFA-106), the only East Coast F/A-18 Fleet Replacement Squadron (FRS), has identified problems in Cubic Instructor (CI) capacity during periods of high demand as a result of combining series of aircraft, C/D and E/F, into larger “Super” classes. Subsequently, the squadron is forced to augment CIs with Instructor Pilots (IPs) or Instructor Weapons System Officers (IWSOs) to increase capacity or forego utilization of some of their 70 simulator hours allotted to them daily. A simulator process improvement study was un
APA, Harvard, Vancouver, ISO, and other styles
9

Bjarne, Katrin. "Optimerad förfällning med hydrolys och fermentation av primärslam för utvinning av kolkälla till efterdenitrifikation." Thesis, Uppsala universitet, Avdelningen för systemteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-210613.

Full text
Abstract:
Att rena vatten är kostsamt, från både en ekonomisk och miljömässig synpunkt, då behovet av fällningskemikalier, kolkällor och energi är stort. Det är därför önskvärt att titta på alternativa lösningar som möjliggör reningsverk att bli mer självförsörjande och kretsloppsanpassande. Hammarby Sjöstadverket är en pilotanläggning för avloppsvattenrening belägen i Stockholms sydöstra stadsdel i Henriksdal och ägs av IVL, Svenska Miljöinstitutet samt KTH. Sedan pilotanläggning byggdes år 2002, har flera olika reningstekniker utvärderats där fokus ligger på att sträva efter miljövänliga och kretslopp
APA, Harvard, Vancouver, ISO, and other styles
10

Drakley, Catherine. "The dietary energy value of wheat for young broiler chickens." Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391650.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "VFOA"

1

New York (State). Dept. of Correctional Services. Division of Program Planning, Research, and Evaluation, ed. Violent crime histories of sample of non-VFO second felony offenders. State of New York, Dept. of Correctional Services, Division of Program Planning, Research and Evaluation, 1985.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Simbulan, Roland G. Why the Senate should reject the VFA: A briefing paper submitted to the Philippine Senate on the Visiting Forces Agreement. Nuclear Free Philippines Coalition, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Jones, Ally. VFA Chronicles: Dedication. Independently Published, 2021.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Shapiro, Robert. The Ultimate VFO Book (Explorer Race). Light Technology Publishing, 2002.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Khalat, David, and KHALAT. Print Art Now : Edition Vfo 1948 - 2023hb: Print Art Now. Antique Collectors' Club, 2023.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Derrah, Aurelio. Thirty-Seven Years of Existence : the VF-201 / VFA-201, Legend of Texas: Naval History Questions. Independently Published, 2021.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Dictionary of American naval aviation squadrons: Volume 1 The history of VA, VAH, VAK, VAL, VAP, and VFA squadrons. Naval Historical Center, Dept. of the Navy : For sale by the U.S. G.P.O., Supt. of Docs., 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Navy Historical Center Staff Dept of the Navy. Dictionary of American Naval Aviation Squadrons Vol. 1: The History of VA, VAH, VAK, VAL, VAP and VFA Squadrons. United States Government Printing Office, 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "VFOA"

1

Karyawan, I. Dewa Made Alit, Januarti Jaya Ekaputri, Iswandaru Widyatmoko, and Ervina Ahyudanari. "The Effect of Replacing Natural Aggregate with Geopolymer Artificial Aggregates on Air Voids of Hot Mix Asphalt." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2532-2_39.

Full text
Abstract:
AbstractHigh voids in hot mix asphalt (HMA) can increase sensitivity to moisture, resulting in premature failure of asphalt pavements. The use of artificial aggregates as a substitute for natural aggregates has been considered in this paper to optimize air voids that meet the requirements. The reason is that natural aggregates are non-renewable raw materials and their availability continues to decrease. This study aims to determine the effect of replacing some natural aggregates with artificial aggregates on air voids. This experiment assessed 2 sets of HMA standard gradations, namely the Bina
APA, Harvard, Vancouver, ISO, and other styles
2

Bonnick, Sydney Lou, and Lori Ann Lewis. "VFA Imaging, Femoral Morphometry, and Hip Structural Analysis." In Bone Densitometry for Technologists. Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-3625-6_13.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Michałek, Maciej, and Krzysztof R. Kozłowski. "Finite-time VFO Stabilizers for the Unicycle with Constrained Control Input." In Robot Motion and Control 2009. Springer London, 2009. http://dx.doi.org/10.1007/978-1-84882-985-5_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Michałek, Maciej. "VFO Control for Mobile Vehicles in the Presence of Skid Phenomenon." In Lecture Notes in Control and Information Sciences. Springer London, 2007. http://dx.doi.org/10.1007/978-1-84628-974-3_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Cui, Naiyu, Hefei Gao, and Wei Wang. "Dynamic Optimization Deployment of Wireless Sensor Networks Based on TPWRLS Graph Construction and VFA." In Lecture Notes in Electrical Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-7545-7_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Söğüt, Hasan Can, and Sanem Şener. "İlköğretim Kurumlarında Görev Yapan Öğretmenlerin Vücut Farkındalık Düzeylerinin İş Motivasyonu ve Yaşam Kalitesi Üzerine Etkisi." In Sağlık Bilimleri Alanında Uluslararası Araştırmalar-II. Özgür Yayınları, 2023. http://dx.doi.org/10.58830/ozgur.pub74.c231.

Full text
Abstract:
İstanbul ilinde Nisan-Eylül 2022 tarihleri arasında gerçekleştirilen bu çalışmada, ilköğretimde öğretmenlik yapanların vücut farkındalığı, iş motivasyonu ve yaşam kalitesi arasındaki ilişkiyi araştırmayı amaçlamıştır. Yaş aralığı 25-40 arasında olan 109 gönüllü öğretmen çalışmaya katılmıştır. Çalışmaya dahil edilen öğretmenlerin vücut farkındalığı Vücut Farkındalığı Anketi(VFA) ile, iş motivasyonları İş Motivasyonu Ölçeği(İMÖ) ile, yaşam kaliteleri Nottingham Sağlık Profili (NHP) ile ve postür durumları New York Postür Analizi Yöntemi(NYPAY) ile değerlendirildi. Çalışmada, öğretmenlerin vücut
APA, Harvard, Vancouver, ISO, and other styles
7

Rowland, Richard. "The Value-First Account and First-Order Neutrality." In The Normative and the Evaluative. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198833611.003.0002.

Full text
Abstract:
The Value-First Account (VFA) analyses reasons for pro-attitudes in terms of value. G. E. Moore, amongst others, held VFA. This chapter first motivates and defends a neutrality requirement according to which we have reason to reject views about what it is to have a certain property or to fall under a certain concept that entail the falsity of substantial, widely held, and somewhat plausible first-order views in normative ethics. Two versions of VFA conflict with this neutrality requirement. One version holds that reasons to have pro-attitudes towards something are just valuable features of tha
APA, Harvard, Vancouver, ISO, and other styles
8

Rowland, Richard. "The Value-First Account and the Unity of the Normative." In The Normative and the Evaluative. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198833611.003.0003.

Full text
Abstract:
The Value-First Account (VFA) analyses reasons for pro-attitudes in terms of goodness or value. This chapter makes an argument against VFA. It argues that epistemic reasons for belief should not be analysed in terms of value. But it argues that if epistemic reasons should not be analysed in terms of value but reasons for pro-attitudes should be analysed in terms of value, then epistemic reasons for belief cannot be instances of the very same relation as reasons for pro-attitudes. And this chapter argues that we should hold that epistemic reasons for belief are instances of the very same relati
APA, Harvard, Vancouver, ISO, and other styles
9

Rowland, Richard. "Reasons as The Unity among the Varieties of Goodness." In The Normative and the Evaluative. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198833611.003.0005.

Full text
Abstract:
The Buck-Passing Account of Value (BPA) analyses goodness simpliciter in terms of reasons for pro-attitudes. The Value-First Account (VFA) analyses reasons for pro-attitudes in terms of value. And the No-Priority View (NPV) holds that neither reasons nor value can be analysed in terms of one another. This chapter argues that BPA should be accepted rather than VFA or NPV because if BPA is accepted, then what all the different varieties of goodness have in common can be explained: but if VFA or NPV is accepted, what the different varieties of goodness have in common cannot be explained. In makin
APA, Harvard, Vancouver, ISO, and other styles
10

Graf, Rudolf F., and William Sheets. "VFO Controlled FM Monaural Transmitter for 88-108 MHz." In Build Your Own Low-Power Transmitters. Elsevier, 2001. https://doi.org/10.1016/b978-0-08-049414-2.50010-5.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "VFOA"

1

Li, Kaiyue, Ziyan Zhang, Ruomeng Lin, and Wei Ma. "VFLA: A Verifiable Federated Learning Scheme for Multi-Round Aggregation in VANETs." In 2025 6th International Conference on Computing, Networks and Internet of Things (CNIOT). IEEE, 2025. https://doi.org/10.1109/cniot65435.2025.11071224.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Farquhar, Gale B. "A Review and Update of the Role of Volatile Fatty Acids (Vfa’S) in Seawater Injection Systems." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98005.

Full text
Abstract:
Abstract This paper presents a current review and update of the role the presence of volatile fatty acids play in the production problems related to sea water injection. Such production problems as corrosion, formation souring, deep water subsea injectivity and decline in injectivity are discussed. Conceptual souring models, methods of sampling and analysing for VFA and modern research methods developed towards VFA related sea water injection systems are reviewed. Areas for future research are indicated..
APA, Harvard, Vancouver, ISO, and other styles
3

Tanji, Yasunori, Kazuya Toyama, and Kazuhiko Miyanaga. "Identification of Crude Oil Component Which Facilitate Biological Souring." In CORROSION 2014. NACE International, 2014. https://doi.org/10.5006/c2014-3853.

Full text
Abstract:
Abstract Seawater injection into oil reservoirs for secondary oil recovery is frequently accompanied by souring (increased sulfide concentrations). Production of hydrogen sulfide causes various problems, such as microbiologically influenced corrosion (MIC), deterioration of crude oil. Sulfate-reducing bacteria (SRB) are considered to be major players in souring. Volatile fatty acids (VFAs) in oil field water are assumed to be produced by microbial degradation of crude oil. The objective of this research is to investigate mechanisms of souring from the view of VFA production by the crude oil bi
APA, Harvard, Vancouver, ISO, and other styles
4

Lillebø, Bente-Lise P., Terje Torsvik, Egil Sunde, and Hans Kristian Hornnes. "Effect of Water Content on the Growth of Srb in Crude Oil." In CORROSION 2010. NACE International, 2010. https://doi.org/10.5006/c2010-10206.

Full text
Abstract:
Abstract Growth of sulfate reducing bacteria (SRB) in crude oil, with variable amounts of enrichment medium was studied. Gullfaks, Snorre and Grane crude oil were used as carbon and energy source. In Gullfaks crude oil anaerobic cultures with 2 to 95 % v/v brine were inoculated with a mixed culture of SRB and incubated at 30 C for 4 weeks. The cultures were amended with volatile fatty acids (VFA) to enhance growth of SRB. Cultures were analyzed for growth of SRB and H2S production. Growth of SRB was observed in cultures with 6 % water and more, and H2S production was observed in cultures with
APA, Harvard, Vancouver, ISO, and other styles
5

Hoffmann, Heike, Kevin Harris, and Jim Palmer. "The Laboratory Evaluation of Seawater Injection on H2S Production, Incorporating Several Different Treatment Strategies, Utilizing Fixed Film Upflow Bioreactors." In CORROSION 2014. NACE International, 2014. https://doi.org/10.5006/c2014-3861.

Full text
Abstract:
Abstract Reservoir Souring is the unplanned production of increased concentrations of hydrogen sulfide (H2S) in well-stream fluids from production wells that are subjected to water-injection. The consequences of souring with respect to safety, corrosion and environmental risk can be significant. This is typically associated with the activity of a specialized group, the Sulfate-reducing bacteria (SRB). However, in recent years, various other micro-organisms are believed to be involved in souring, e.g. Sulfate reducing archaea (SRA). In this study, fixed film up flow bioreactors (FFUBR) were uti
APA, Harvard, Vancouver, ISO, and other styles
6

Kumar K, P. "VFSA-PSO Hybrid Algorithm - Resistivity Inversion." In 1st Indian Near Surface Geophysics Conference & Exhibition. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201979037.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Moreno, David L., and Enrique Fraga. "vFOX: Web Monitoring of Satellite Operations." In 15th International Conference on Space Operations. American Institute of Aeronautics and Astronautics, 2018. http://dx.doi.org/10.2514/6.2018-2304.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Resko, B., and P. Baranyi. "Lateral operations in the VFA model." In 2008 6th International Symposium on Applied Machine Intelligence and Informatics. IEEE, 2008. http://dx.doi.org/10.1109/sami.2008.4469152.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Kılıç, Onur Selim, Ahmet Akman, and A. Aydın Alatan. "E-VFIA: Event-Based Video Frame Interpolation with Attention." In 2023 IEEE International Conference on Robotics and Automation (ICRA). IEEE, 2023. http://dx.doi.org/10.1109/icra48891.2023.10160276.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Hassaoui, N., A. Tlemcani, and K. Sebaa. "DPC and VFOC of PWM rectifier using fuzzy type-2." In 2013 3rd International Conference on Systems and Control (ICSC). IEEE, 2013. http://dx.doi.org/10.1109/icosc.2013.6750829.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "VFOA"

1

Brooks, Stephen. FETS-VFFA Cell using Contour-Based Magnets. Office of Scientific and Technical Information (OSTI), 2020. http://dx.doi.org/10.2172/1895094.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Dahn, Katlin. HF IQ Mixer VFO Temperature Compensation and Drive Level Optimization for Opposite Sideband Suppression. Portland State University Library, 2019. http://dx.doi.org/10.15760/etd.7304.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Ellen, Hilko, Yvo Goselink, Jos Huis in ’t Veld, and Albert Winkel. Pilots naar de vermindering van fijnstofemissie uit pluimveestallen: ASPRA Agro van VFA-Solutions/Smits Agro. Wageningen Livestock Research, 2021. http://dx.doi.org/10.18174/548315.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Weinberg, Zwi G., Richard E. Muck, Nathan Gollop, Gilad Ashbell, Paul J. Weimer, and Limin Kung, Jr. effect of lactic acid bacteria silage inoculants on the ruminal ecosystem, fiber digestibility and animal performance. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7587222.bard.

Full text
Abstract:
The overall objective of the whole research was to elucidate the mechanisms by which LAB silage inoculants enhance ruminant performance. The results generated will permit the development of better silage inoculants that maximize both silage preservation and animal performance. For this one-year BARD feasibility study, the objectives were to: 1. determine whether lactic acid bacteria (LAB) used in inoculants for silage can survive in rumen fluid (RF) 2.select the inoculants that survived best, and 3. test whether LAB silage inoculants produce bacteriocins-like substances. The most promising str
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'VFOA' for particular source types:
Journal articles Dissertations / Theses
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography