Relevant bibliographies by topics / Quaternary complexes

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

Academic literature on the topic 'Quaternary complexes'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Quaternary complexes"

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V., Shankar, K. Mishra G., and Krishna V. "Multimetal multiligand complex formation equilibria of copper(II), nickel(II) and zinc(II) with L-2-amino-3-methylbutanoic acid (valine) and nitrilotriacetic acid." Journal of Indian Chemical Society Vol. 83, Jan 2006 (2006): 23–25. https://doi.org/10.5281/zenodo.5815119.

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Department of Chemistry, University of Allahabad, Allahabad-211 002, Uttar Pradesh, India <em>Manuscript received 7 March 2005, revised 10 August 2005. accepted 29 August 2005</em> Formation equilibria of homo and heterobinuclear ternary/quaternary complexes of Cu<sup>II</sup>&nbsp;, Ni<sup>II</sup> and Zn<sup>II</sup> with nitrilotriacetic acid (A) and valine (B) ligands in aqueous solution have been investigated. Stability constants&nbsp;of the complexes and the complex formation equilibria at temperature 30 &plusmn; 1&deg;&nbsp;and the ionic strength \(I \)&nbsp;= 0.1 M (NaNO<sub>3</sub>) h
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Gallicano, Keith D., and Norman L. Paddock. "Cyclotetraphosph(III)azanes: donor properties and ylide formation." Canadian Journal of Chemistry 63, no. 2 (1985): 314–18. http://dx.doi.org/10.1139/v85-052.

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The ligand (MeNPMe)4 (L) forms complexes [Formula: see text] [Formula: see text] L.M(CO)3 (M = Cr, Mo, W, Mn+), and a nickel complex L.Ni2(CO)3, which is easily oxidised to the phosphonimide [MeNP(0)Me]4. Quaternary complexes [LM(CO)3R]+I− have been prepared both by quaternisation of the neutral complex (R = Me, CH2CN, CH2C(O)NH2, M = Cr, Mo, W) and (R = Me) by reaction of the simple quaternary with the metal carbonyl. The quaternary complexes have been deprotonated to ylidic complexes, L.M(CO)3CH2 (M = Mo, W) in which the ylidic group has displaced one phosphine function. Chemical and structu
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S., S. Yadav, and S. Saxena R. "Formation constants and thermodynamic parameters of some tri-ligand complexes of lanthanides." Journal of Indian Chemical Society Vol. 86, Feb 2009 (2009): 168–70. https://doi.org/10.5281/zenodo.5807540.

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Department of Chemistry, Government Raza P.G College, Rampur-244 901, Uttar Pradesh, India <em>Manuscript received 30 June 2008, revised 15 October 2008, accepted 23 October 2008</em> Potentiometric evidences have been cited for the formation of 1 : 1 : 1 : 1; MLL&#39;L<em>&quot;</em> quaternary complexs [M<sup>III</sup>&nbsp;= La<sup>III</sup>, Pr<sup>III</sup>&nbsp;and Nd<sup>III</sup>, L = ethyleneglycol-bis(p-aminoethylether)-<em>N,N,N&#39; ,N&#39;</em>-tetraacetic acid (EGTA), L&#39; = pyrldine-2,6-dicarboxylic acid (PDA) and L&quot;&nbsp;= 2,2<em>&#39;</em>-dithiodisalicylic acid (DTSA)
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Appolaire, Alexandre, Eric Girard, Matteo Colombo, et al. "Small-angle neutron scattering reveals the assembly mode and oligomeric architecture of TET, a large, dodecameric aminopeptidase." Acta Crystallographica Section D Biological Crystallography 70, no. 11 (2014): 2983–93. http://dx.doi.org/10.1107/s1399004714018446.

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The specific self-association of proteins into oligomeric complexes is a common phenomenon in biological systems to optimize and regulate their function. However,de novostructure determination of these important complexes is often very challenging for atomic-resolution techniques. Furthermore, in the case of homo-oligomeric complexes, or complexes with very similar building blocks, the respective positions of subunits and their assembly pathways are difficult to determine using many structural biology techniques. Here, an elegant and powerful approach based on small-angle neutron scattering is
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Surabhi, Sinha, Bartaria Divya, and Krishna V. "Solution equilibria of some quaternary metal complexes involving iminodiacetic acid and L-pyrrolidine-2-carboxylic acid." Journal of Indian Chemical Society Vol. 83, Jul 2006 (2006): 714–7. https://doi.org/10.5281/zenodo.5825126.

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Department ot Chemistry, university of Allahabad, Allahabad-211 002, Uttar Pradesh, Indta E mail vkrishna_,aIld@rediffmail com <em>Manuscript received 19&nbsp;October 2005, revised 29 March 2006 accepted 3 April 2006</em> I quihbnum based computer studies on quaternary complex systems, viz Mn<sup>II</sup>/Co<sup>II</sup>Pb<sup>II</sup>&nbsp;iminodiacetic acid (IMDA = A l-) and&nbsp;L.-pyrrohdine-2-carboxylic acid (proline = B)&nbsp;systems demonstrate the formation&nbsp;of mixed-metal mixed-ligand complexes of storchiometry M<sup>1</sup>M<sup>2</sup>AB and M<sup>1</sup>M<sup>1</sup>A<sub>2</su
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Sharma, Sangita, Dipika Dalwadi, and Madhurjya Neog. "A study of the formation constants of ternary and quaternary complexes of some bivalent transition metals." Journal of the Serbian Chemical Society 75, no. 1 (2010): 75–82. http://dx.doi.org/10.2298/jsc1001075s.

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The formation of hetero-ligand 1:1:1, M(II)-Opda-Sal/Gly ternary and 1:1:1:1, M(II)-Opda-Sal-Gly quaternary complexes, where M(II) = Ni, Cu, Zn and Cd; Opda = o-phenylenediamine, Sal = salicylic acid, Gly = glycine, was studied pH-metrically in aqueous medium. The formation constants for the resulting ternary and quaternary complexes were evaluated at a constant ionic strength, ? = 0.20 mol dm-3 and temperature, 30?0.1 ?C. The order of the formation constants in terms of the metal ion for both type of complexes was found to be Cu(II) &gt; Ni(II) &gt; Zn(II) &gt; Cd(II). This order was explaine
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Hao, Xao Xiu, Jie Meng, and Cheng Sun. "Study on Synthesis and Fluorescent Properties of Ternary and Quaternary Rare Earth Europium Complexes." Advanced Materials Research 380 (November 2011): 103–6. http://dx.doi.org/10.4028/www.scientific.net/amr.380.103.

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Synthesis and fluorescent properties of rare earth Rare earth complexes ultraviolet photochromic materials such as ternary and quaternary europium complexes were synthesized in this,we selected the high luminescent β-diketones such as α-thenoyltrifluoroacetone(HTTA),fine fragrant carboxylic acid and o-phenanthroline as ligands. The structure of the ternary and quaternary europium complexes were studied by IR spectrum, indicated that these complexes have bonded with the ligands. The fluorescent properties were studied systematically by fluorescence spectrophotometer, relative fluorescence inten
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Sliwa, Wanda, and Jerzy Peszke. "Inclusion Complexes Containing Quaternary Azaaromatic Moieties." HETEROCYCLES 71, no. 8 (2007): 1685. http://dx.doi.org/10.3987/rev-06-615.

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S., S. YADAV, and C. SHARMA R. "Formation Studies on Ternary and Quaternary Complexes of some Lanthanides." Journal of Indian Chemical Society Vol.71, Jan 1994 (1994): 9–11. https://doi.org/10.5281/zenodo.5890986.

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Department of Chemistry, Institute of Basic Sciences; Agra University, Khandari, Agra-282 002 Manuscript received 15 October 1992, revised 26 March 1993, accepted 30 April 1993 The formation of 1 : 1 : 1, Ln(iii)&mdash;PDA&mdash;NTA/FA ternary complexes and 1 : 1 : 1 : 1, Ln(III)&mdash;PDA&mdash;NTA&mdash;FA quaternary complexes, where Ln(III) = La, Pr and Nd; PDA = pyridine-2,6-dicarboxylic acid, NTA = nitrilotriacetic acid and FA = furan-2-carboxylic&nbsp;acid, has been studied potentiometrically. The formation constants for the resulting ternary and quaternary complexes have been evaluated
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Zhang, H., Y. Xiong, and D. Beach. "Proliferating cell nuclear antigen and p21 are components of multiple cell cycle kinase complexes." Molecular Biology of the Cell 4, no. 9 (1993): 897–906. http://dx.doi.org/10.1091/mbc.4.9.897.

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We have recently shown that two proteins, proliferating cell nuclear antigen (PCNA) and p21, are associated with cyclin D. Here we show that PCNA and p21 are common components of a wide variety of cyclin/cyclin-dependent kinase complexes in nontransformed cells. These include kinase complexes containing cyclin A, cyclin B, and cyclin D, associated either with CDC2, CDK2, CDK4, or CDK5. We show that PCNA and p21 form separate quaternary complex with each cyclin/CDK and that these quaternary complexes contain a substantial, if not major, fraction of the cell cycle kinases in asynchronously growi
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Dissertations / Theses on the topic "Quaternary complexes"

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Chamberlain, Dean. "Expression and structural studies of multidomain proteins and complexes." Thesis, University College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314366.

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Busch, Florian [Verfasser], and Reinhard [Akademischer Betreuer] Sterner. "Tryptophan synthase complexes: evolution, substrate specificity, and quaternary structure / Florian Busch. Betreuer: Reinhard Sterner." Regensburg : Universitätsbibliothek Regensburg, 2016. http://d-nb.info/1110148305/34.

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Marzak, Saïd. "Complexes du cuivre (i) construits sur le fragment (ms::(4))**(2-) (m=mo,w) : role du ligand thiocyanate dans l'edification de composes heterometalliques a structure infinie." Paris 6, 1988. http://www.theses.fr/1988PA066401.

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Preparation de complexes du type (nr::(4))::(n)(cu::(4)(ncs)::(4)ms::(4)), m=mo, w, r=me, et et n=2 ou 3. Selon la taille du cation, obtention de macrostructures bidimensionnelles ou tridimensionnelles; l'insertion du cation pph::(4)**(+) conduit a la formation d'une structure infinie de chaines lineaires
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May, Tricia Lee. "Copper-Based N-Heterocyclic Carbene Complexes for Catalytic Enantioselective Conjugate Additions of Alkyl-, Aryl- and Vinyl-Based Nucleophiles to Form All-Carbon Quaternary Stereogenic Centers." Thesis, Boston College, 2011. http://hdl.handle.net/2345/2650.

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Thesis advisor: Amir H. Hoveyda<br>Chapter 1 Enantioselective Conjugate Additions of Carbon Nucleophiles to Activated Olefins: Preparation of Enantioenriched Compounds Containing All-Carbon Quaternary Stereogenic Centers. Methods for enantioselective conjugate addition of nucleophiles to activated olefins generating products containing all-carbon quaternary stereogenic centers are critically reviewed. Enantioselective conjugate addition has been shown to be a powerful and concise approach to construct carbon-carbon bonds to prepare compounds containing sterically hindered stereogenic centers a
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Blackwell, Anne. "Expanding the Role of Gas-Phase Methods in Structural Biology: Characterization of Protein Quaternary Structure and Dynamics by Tandem Mass Spectrometry and Ion Mobility." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/238912.

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This dissertation presents efforts to expand the role of mass spectrometry (MS) in structural biology. Determination of quaternary structure of a protein complex has been hindered by limited fragmentation from collision-induced dissociation (CID). As an alternative, surface-induced dissociation (SID) was implemented for a quadrupole - time-of-flight instrument in the Wysocki laboratory. This research tested the hypothesis that SID should produce fragmentation reflective of subunit organization. Furthermore, ion mobility (IM) was used to prove the direct relationship between precursor confo
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Hills, Ivory Derrick 1977. "Catalytic enantioselective synthesis of oxindoles and benzofuranones bearing a quaternary stereocenter and reactions of palladium bisphosphine complexes relevant to catalytic C-C bond formation." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/28699.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2004.<br>Includes bibliographical references.<br>In Part I the development of a new method for the construction of oxindoles and benzofuranones bearing quaternary stereocenters is discussed. A planar-chiral PPY derivative catalyzes the O-to-C acyl group migration (Black rearrangement) in a highly efficient and enantioselective manner. The utility of this method is further demonstrated by the formal total synthesis of the natural product aplysin. In Part II reactivity of bisphosphine palladium-complexes is discussed. It
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Aous, Soad. "Synthèse de cyclopendants aminophosphorés : complexes d'ions paramagnétiques à finalité biomédicale." Université Joseph Fourier (Grenoble), 1998. http://www.theses.fr/1998GRE10057.

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Les resultats de ce travail a finalite biomedicale s'organisent selon trois axes : - synthese de nouveaux cyclopendants et de complexes polyfonctionnels de gd iii, en serie macrocyclique et bismacrocyclique, les podants etant organophosphores. Nous avons ainsi obtenu le dotmp -acide 10,13-dioxo-1,4,7-triazacyclopentadecane-4,7,10-tri(methylenephosphonique) avec un cycle bifonctionnel dioxo-triaza et des composes modeles, precurseurs de dendrimeres : le ttap, -acide 1,4,8,11-tetraazacyclotetradecane-1-acetique-4,8,11-tri(methylenephosphonique) cyclopendant a podants mixtes phosphonique et carbo
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Blacker, Andrew John. "Recepteurs cyclointercalants et reactifs de photocoupure d'acides nucleiques." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13119.

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Nous avons etudie: les proprietes d'electrochimie, de photochimie et de complexation d'anions d'une serie de recepteurs bases sur un motif ressemblant au methylviologene, le cation 2,7-diazapyrenium; les syntheses et les proprietes de complexation d'une serie de cyclointercalants, incorporant l'element plan, le naphthalene diimide; les proprietes photophysiques d'un recepteur heteroditopique, contenant un groupement intercalant et un element macrocyclique polyammonium et sa capacite de complexer des nucleotides phosphates dans une orientation preferentielle. La photocoupure des acides nucleiqu
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Benhlima, Nadia. "Echelles d'acidite et de potentiel redox dans le nitrate d'ethylammonium fondu et ses melanges avec l'eau a 298 k." Paris 6, 1988. http://www.theses.fr/1988PA066066.

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Millot, Nicolas. "Syntheses et reactivites de nouveaux complexes (cyclohexadiene) fer carbonyle." Paris 11, 1998. http://www.theses.fr/1998PA114801.

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Books on the topic "Quaternary complexes"

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Speed, Robert C., and Hai Cheng. Emergence and Evolution of Barbados. Edited by Christine Speed, Richard Sedlock, and Lawrence Andreas. Geological Society of America, 2021. http://dx.doi.org/10.1130/spe549.

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Emergence and Evolution of Barbados is a three-part analysis of the Quaternary geologic and geomorphologic evolution of the island of Barbados in the southeastern Caribbean. “Geology of Southeastern Barbados” assembles and integrates detailed observations into a complex 700 k.y. history of marine sculpting and riverine flooding processes. “Marine Terrace Evolution of Windward Barbados” revises the Quaternary stratigraphy of the island, describes the tectonics of emergence, and demonstrates that uplift rates vary by location. “Active Emergence, Chronology, and Limestone Facies in Southeastern W
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Freund, Holger, and Deutsche Quartärvereinigung e. V, eds. E&G – Quaternary Science Journal Vol. 59 No 1-2. Geozon Science Media, 2011.

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Book chapters on the topic "Quaternary complexes"

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Dey, Sucharita, and Emmanuel D. Levy. "Inferring and Using Protein Quaternary Structure Information from Crystallographic Data." In Protein Complex Assembly. Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-7759-8_23.

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SEXTON, WALTER J., MILES O. HAYES, and DONALD J. COLQUHOUN. "EVOLUTION OF QUATERNARY SHOAL COMPLEXES OFF THE CENTRAL SOUTH CAROLINA COAST." In Quaternary Coasts of the United States. SEPM (Society for Sedimentary Geology), 1992. http://dx.doi.org/10.2110/pec.92.48.0161.

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Graymer, R. W., and V. E. Langenheim. "Geologic framework of Mount Diablo, California." In Regional Geology of Mount Diablo, California: Its Tectonic Evolution on the North America Plate Boundary. Geological Society of America, 2021. http://dx.doi.org/10.1130/2021.1217(01).

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ABSTRACT The basic stratigraphic and structural framework of Mount Diablo is described using a revised geologic map, gravity data, and aeromagnetic data. The mountain is made up of two distinct stratigraphic assemblages representing different depocenters that were juxtaposed by ~20 km of late Pliocene and Quaternary right-lateral offset on the Greenville-Diablo-Concord fault. Both assemblages are composed of Cretaceous and Cenozoic strata overlying a compound basement made up of the Franciscan and Great Valley complexes. The rocks are folded and faulted by late Neogene and Quaternary compressi
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Frangov G., Krastanov M., and Varbanov R. "Complex engineering geological conditions for civil construction in the Rhodope Mountain (Bulgaria)." In Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering. IOS Press, 2009. https://doi.org/10.3233/978-1-60750-031-5-749.

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The explored terrain falls within the central parts of the Rila-Rhodope engineering-geological region which has undergone continuous tectonic evolution. The big fault structures manifested in the region were reflected both on relief modeling and on the engineering geological properties of rocks and soils. The studied site is situated on a steep valley slope, inclined to the east and with an average altitude of 1540 m. The terrain is built of deluvial Quaternary deposits situated on pre-Cambrian gneisses and marbles. The geotechnical exploration carried out has proved that site conditions are c
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Valle, G., E. Campiani, F. Foglini, et al. "Morphology of late Quaternary mass-transport complexes along the South-Western Adriatc Margin." In Landslides and Engineered Slopes. Experience, Theory and Practice. CRC Press, 2016. http://dx.doi.org/10.1201/b21520-86.

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Valle, G. Dalla, E. Campiani, F. Foglini, et al. "Morphology of late Quaternary mass-transport complexes along the South-Western Adriatc Margin." In Landslides and Engineered Slopes. Experience, Theory and Practice. CRC Press, 2018. http://dx.doi.org/10.1201/9781315375007-76.

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R. Bond, Marcus. "Structural Diversity in Substituted Pyridinium Halocuprates(II)." In Chemistry with Pyridine Derivatives [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.107124.

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The flexible coordination sphere of the Jahn-Teller active Cu(II) ion provides access to a full spectrum of coordination geometries from 4-coordinate (tetrahedral or square planar) to 6-coordinate elongated octahedral. This is further enhanced in anionic halide complexes by the ability of the halide ligand to bridge between Cu(II) centers to generate extended oligomeric or polymeric complexes. Coordination geometry and extended structure of the anionic complex is very sensitive to the nature of the organic counterion. This is especially true for planar substituted pyridinium cations in which m
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Meghan Gladu, Erin, Iman Sayed, and Michael Anthony Massiah. "Review of the Structural Basis of Human E2 Conjugating Enzymes in Complexed with RING E3 Ligases." In Hydrolases [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.101484.

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Protein ubiquitination is a post-translational modification that controls essential biological processes through its regulation of protein concentration, function, and cellular location. RING E3 ligases are a critical component of a three-enzyme cascade that facilitates the ubiquitination of proteins. RING-type E3 ligases represent one class of E3 ligases that function by binding the substrate protein and ubiquitin-conjugating enzymes (E2s). Proteins exhibiting RING-type E3 ligase activities do so via a domain that adopts a ββα-RING fold and coordinates two zinc ions. To date, structural studi
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Stoffers, Albert J., Christopher A. L. Clarke, Brian L. Cousens, Christopher D. Henry, and Ann C. Timmermans. "Geochemical transition from Miocene–Pliocene to Quaternary arc volcanism in the northern Sierra Nevada, California." In The Virtue of Fieldwork in Volcanology, Sedimentology, Structural Geology, and Tectonics—Celebrating the Career of Cathy Busby. Geological Society of America, 2025. https://doi.org/10.1130/2025.2563(02).

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ABSTRACT Miocene–Pliocene volcanism around Lake Tahoe, California/Nevada, USA, part of the Southern Ancestral Cascades arc, ceased at around 3 Ma as the southern edge of the subducting Juan de Fuca plate migrated north of the region. Post–3 Ma, arc volcanism continued north of Lake Tahoe, but modern subduction and arc volcanism now occur only north of the Lassen volcanic center. Miocene–Pliocene Tahoe arc lavas appear to include an older mantle source component that is not common in Quaternary Lassen arc rocks. The goal of this work was to investigate how magma sources and/or volcanic processe
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Anderson, John B., Julia Wellner, Ken Abdulah, and Sabrina Sarzalejo. "Late Quaternary Shelf-Margin Delta and Slope-Fan Complexes of the East Texas–Western Louisiana Margin: Variable Response to Eustasy and Sediment Supply." In Shelf Margin Deltas and Linked Down Slope Petroleum Systems: 23rd Annual. SOCIETY OF ECONOMIC PALEONTOLOGISTS AND MINERALOGISTS, 2003. http://dx.doi.org/10.5724/gcs.03.23.0067.

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Conference papers on the topic "Quaternary complexes"

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Agarwala, Vinod S., and A. Basir Shafiq. "Corrosion Fatigue Crack Growth Behavior and Aircraft Structure Life Time Prediction." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00303.

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Abstract Considerable amount of research has been performed in the area of lifetime assessment of aircraft (structural) materials; however, a methodology or a model is yet to surface that would accurately predict lifetime of an aircraft structure serving in aggressive environment. Literature survey reports some trends but many conflicting opinions (results) as well, which reduces confidence level in lifetime prediction. Some experimental results reported in this paper suggest that corrosion, even though a time dependent phenomenon plays a vital role in affecting fatigue crack growth rates when
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Tsui, Kenny, and Jennifer E. Wong. "Effect of Corrosion Inhibitor Active Components on Corrosion Inhibition in a Sweet Environment." In CORROSION 2010. NACE International, 2010. https://doi.org/10.5006/c2010-10326.

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Abstract In sweet corrosion, corrosion scales such as iron carbonate are formed on the internal surfaces of oil and gas production and transport systems. Depending on the type of corrosion inhibition program and the age of production system before chemical treatment is implemented, the presence of corrosion scale could affect the performance of the inhibitor. Previous work completed by the authors' company investigated the interaction of iron carbonate and three inhibitor actives - quaternary amine, imidazoline, and phosphate ester. This study is a continuation and examines two more generic co
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Gough, M. A., R. A. Mothershaw, and N. E. Byrne. "Molecular Monitoring of Residual Corrosion Inhibitor Actives in Oilfield Fluids: Implications for Inhibitor Performance." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98033.

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Abstract In recent years a number of significant advances in the molecular monitoring of residual corrosion inhibitors in oilfield fluids have been reported. The techniques used, chromatography and mass spectroscopy, provide molecular specificity with high sensitivity, and allow individual molecules to be tracked at low levels (sub ppm) throughout oil production systems. These analyses have demonstrated for the first time how individual corrosion inhibitor molecules behave in real systems, and the results obtained have shown some interesting phenomena. For example, for a series of quaternary a
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Kramer, Jeffrey F., Frank O’Brien, and Steven F. Strba. "A New High Performance Quaternary Phosphonium Biocide for Microbiological Control in Oilfield Water Systems." In CORROSION 2008. NACE International, 2008. https://doi.org/10.5006/c2008-08660.

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Abstract Microorganisms can cause severe problems in oilfield water systems. This paper describes a new quaternary phosphonium biocide based on tributyl tetradecyl phosphonium chloride (TTPC). Laboratory and field data has shown that TTPC is effective at low concentrations, is fast acting and is effective against both acid producing and sulfate reducing bacteria. It has out performed both glutaraldehyde and THPS in comparative biocidal tests giving complete kill of aerobic and anaerobic sulfate-reducing bacteria in one hour at 5 and 50 ppm active, respectively. Glutaraldehyde required &amp;gt;
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Kopecky, Sarah E. "Investigation of Substituent Effects on the Corrosion Inhibition of Pyridine Derivatives with Acetylenic Alcohols on Steel in Acid Media." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05569.

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Abstract The corrosion inhibition of substituted pyridine derivatives and quaternized pyridines in the presence and absence of acetylenic alcohol synergists is reported. Electrochemical Frequency Modulation (EFM) was used as a method of monitoring corrosion rates of steel in acidic environments. Early stage pitting was evaluated via scanning electron microscope (SEM) for comparison of measured corrosion rates to observed pit formation. EFM was found to be a reliable and accurate method of monitoring general corrosion rates over time, and causality factor data was found to depend heavily on the
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Barker, Richard, Joshua Owen, Richard C. Woollam, et al. "Correlating Physical Chemistry with Interfacial Properties: Effect of Salinity on the Partitioning, Distribution and Performance of a Quaternary Amine Corrosion Inhibitor." In CONFERENCE 2023. NACE International, 2023. https://doi.org/10.5006/c2023-19142.

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Abstract Corrosion inhibitors provide a cost effective method for internal corrosion control of carbon and low alloy steel infrastructure within the oil and gas industry. The correct selection and validation of inhibitors is essential to ensure successful, safe and reliable operation of infrastructure. Despite a consensus from operators and chemical suppliers that the fundamental properties dictating inhibitor performance are largely understood, the reality is that an extremely complex relationship exists between the physical properties of surfactants, the environmental solution chemistry and
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Jackson, Tracey, and Jonathan Vargas. "Selective Loss of Bulk Corrosion Inhibitor Species When Exposed to Glass, Plastic, and Steel." In CORROSION 2020. NACE International, 2020. https://doi.org/10.5006/c2020-14999.

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Abstract Despite the widespread use of corrosion inhibitors (CIs) in the oil and gas industry much of their complex aggregation and adsorption behavior is still very poorly understood. CIs are surface active species meaning that when they are injected into aqueous solutions they naturally aggregate and migrate to gas-liquid, liquid-liquid, and solid-liquid interfaces. A better understanding of each CI component and how it adsorbs when exposed to various surfaces could lead to improved CI design, higher performance at lower dosages, as well as improved methods for residual detection. This paper
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Graham, G. M., and C. P. McMahon. "The Effect on Scale Inhibitor Performance against Bulk (Homogeneous) and Surface (Heterogeneous) Scale Nucleation and Growth by the Addition of Film Forming Corrosion Inhibitors." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02315.

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Abstract It is recognised that chemical interactions between scale inhibitor (SI) and corrosion inhibitor (CI) result in a reduction in the performance efficiency of both chemicals. As reservoir production systems become ever more complex, the requirements for chemical compatibility become greater. This is a particular concern for satellite and deepwater fields in which several wells may be co-produced through very long subsea tie backs. In such systems, chemical / chemical performance compatibilities are essential. Previous work on the issue has mainly been limited to field specific studies w
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Lu, Alex Yi-Tsung, and Zhiwei Yue. "Field Case Study: Impact of Corrosion Inhibitor on Scale Control." In CONFERENCE 2024. AMPP, 2024. https://doi.org/10.5006/c2024-20631.

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Abstract Mineral scale deposition and pipeline corrosion are two of the most common challenges that require chemical treatment in oil wells. Combination products including scale inhibitor (SI), corrosion inhibitor (CI) packages, surfactants, and other chemical additives are well accepted as an integrated solution to flow assurance and asset integrity problems. In this work, a case study in the Permian Basin field demonstrates a certain type of combination product exhibiting lower performance than expected. The raw material interference on the scale inhibitors was investigated and presented wit
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Newton, C. S., R. C. Shipp, D. C. Mosher, and G. D. Wach. "Importance of Mass Transport Complexes in the Quaternary Development of the Nile Fan, Egypt." In Offshore Technology Conference. Offshore Technology Conference, 2004. http://dx.doi.org/10.4043/16742-ms.

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Reports on the topic "Quaternary complexes"

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Rice, J. M., R. C. Paulen, M. Ross, M. B. McClenaghan, and H E Campbell. Quaternary geology of the south Core Zone area, Quebec and Labrador. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330903.

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The complex glacial geomorphology of east-central Quebec and western Labrador has resulted in conflicting ice sheet reconstructions leaving many questions regarding the behaviour of large ice sheets within their inner regions. Specifically, the ice-flow chronology and subglacial conditions remain poorly constrained. To address this, surficial geology investigations were conducted across the border of Quebec and Labrador. A complex glacial history consisting of five ice-flow phases influenced by regional ice stream dynamics was identified, including a near-complete ice-flow reversal. During eac
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Rice, J., R. C. Paulen, M. Ross, M. B. McClenaghan, and H. E. Campbell. Quaternary geology of the southern Core Zone area, Quebec and Newfoundland and Labrador. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331426.

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The complex glacial geomorphology of east-central Quebec and western Labrador has resulted in conflicting ice-sheet reconstructions, leaving many questions regarding the behaviour of large ice sheets within their inner regions. Specifically, the ice-flow chronology and subglacial conditions remainpoorly constrained. To address this, surficial geology investigations were conducted across the border of Quebec and Labrador. A complex glacial history consisting of five ice-flow phases influenced by regional ice-stream dynamics was identified, including a near-complete ice-flow reversal. During eac
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Edwards, B. R., R. G. Anderson, J. K. Russell, N. L. Hastings, and Y T Guo. Geology, the Quaternary Hoodoo Mountain Volcanic Complex and Paleozoic and Mesozoic basement rocks, parts of Hoodoo Mountain (NTS 104B/14) and Craig River (NTS 104B/11) map areas, northwestern British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2000. http://dx.doi.org/10.4095/211646.

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Edwards, B. R., R. G. Anderson, and J. K. Russell. Geology of the Quaternary Hoodoo Mountain volcanic complex and adjacent Mesozoic and Paleozoic basement rocks, parts of Hoodoo Mountain (NTS 104B/14) and Craig River (NTS 104B/11) map areas, northwestern British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1997. http://dx.doi.org/10.4095/208672.

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Tweet, Justin S., Vincent L. Santucci, Kenneth Convery, Jonathan Hoffman, and Laura Kirn. Channel Islands National Park: Paleontological resource inventory (public version). National Park Service, 2020. http://dx.doi.org/10.36967/nrr-2278664.

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Channel Island National Park (CHIS), incorporating five islands off the coast of southern California (Anacapa Island, San Miguel Island, Santa Barbara Island, Santa Cruz Island, and Santa Rosa Island), has an outstanding paleontological record. The park has significant fossils dating from the Late Cretaceous to the Holocene, representing organisms of the sea, the land, and the air. Highlights include: the famous pygmy mammoths that inhabited the conjoined northern islands during the late Pleistocene; the best fossil avifauna of any National Park Service (NPS) unit; intertwined paleontological
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Hiscock, Adam I. Hiscock, Emily J. Kleber, Susanne U. Jänecke, Greg N. McDonald, Robert Q. Oaks Jr., and Tammy Rittenour. Fault Trace Mapping and Surface-Fault-Rupture Special Study Zone Delineation of the East and West Cache Fault Zones and Other Regional Faults, Utah. Utah Geological Survey, 2024. http://dx.doi.org/10.34191/ri-286.

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The Cache Valley region in northern Utah and southern Idaho contains and is surrounded by several large, hazardous faults which pose significant earthquake risk. The 40-mile-long (65 km) East Cache fault zone (ECFZ) and the 35-mile-long (56 km) West Cache fault zone (WCFZ) bound the Cache Valley graben and both show evidence of large surface-faulting earthquakes in the late Quaternary. Other hazardous faults in the Cache Valley region include the intrabasin Dayton-Oxford fault, the Mantua area faults within the Wellsville Mountains, and the James Peak fault at the very southern end of the ECFZ
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Tweet, Justin, Holley Flora, Summer Weeks, Eathan McIntyre, and Vincent Santucci. Grand Canyon-Parashant National Monument: Paleontological resource inventory (public version). National Park Service, 2021. http://dx.doi.org/10.36967/nrr-2289972.

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Grand Canyon-Parashant National Monument (PARA) in northwestern Arizona has significant paleontological resources, which are recognized in the establishing presidential proclamation. Because of the challenges of working in this remote area, there has been little documentation of these resources over the years. PARA also has an unusual management situation which complicates resource management. The majority of PARA is administered by the Bureau of Land Management (BLM; this land is described here as PARA-BLM), while about 20% of the monument is administered by the National Park Service (NPS; th
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