Literatura académica sobre el tema "Cobalto cyclam"

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Artículos de revistas sobre el tema "Cobalto cyclam"

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Babic-Samardzija, K., Sofija Sovilj та V. M. Jovanovic. "Comparative electrochemical study of some cobalt(III) and cobalt(II) complexes with azamacrocyles and β-diketonato ligands". Journal of the Serbian Chemical Society 68, № 12 (2003): 989–99. http://dx.doi.org/10.2298/jsc0312989b.

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The electrochemical properties of eight mixed-ligand cobalt(III) and co balt(II) complexes of the general formulas [CoIII(Rac)cyclam (ClO4)2 (1)?(4) and [Co2II(Rac)tpmc](ClO4)3 (5)?(8) were studied. The substances were investigated in aqueous NaClO4 solution and non-aqueous LiClO4/CH3CN solution by cyclic voltam metry at a glassy carbon electrode. In aqueous solution, cyclam and Rac ligands being soluble in water undergo anodic oxidation. Coordination to Co(III) in complexes 1?4, stabilizes these ligands but reversible peaks in catohodic region indicate the redox reaction CoIII/CoII ion. In th
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2

Boyd, Simon, Kenneth P. Ghiggino, and W. David McFadyen. "Photochemistry of Anthracene-Appended Cobalt(III) Cyclam Complexes." Australian Journal of Chemistry 61, no. 8 (2008): 585. http://dx.doi.org/10.1071/ch08189.

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The photochemistry of two anthracene-appended cobalt(iii) cyclam complexes is explored with a view to demonstrate a photoactivated ligand release process. The ligand exchange processes that occur in the complexes cis-[CoL(NO2)(ONO)]+ and trans-[CoL(NO2)(ONO)]+ in which L = 6-(anthracen-9-ylmethyl)-1,4,8,11-tetraazacyclotetradecane were monitored upon illumination of the anthracenyl chromophore at 360 nm in the presence of a large excess of thiocyanate. The trans-[CoL(NO2)(ONO)]+ complex underwent a ligand exchange reaction in the absence of light and displayed an enhancement of the reaction up
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Jovanovic, Vladislava, K. Babic-Samardzija, and Sofija Sovilj. "The effect of heterocyclic S,S’-ligands on the electrochemical properties of some cobalt(III) complexes in acid." Journal of the Serbian Chemical Society 70, no. 1 (2005): 51–61. http://dx.doi.org/10.2298/jsc0501051j.

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Eight mixed-ligand cobalt(III) complexes with the macrocyclic amine 1,4,8,11-tetraazacyclotetradecane (cyclam) and a heterocyclic dithiocarbamate (Rdtc-)i.e., morpholine-(Morphdtc), thiomorpholine- (Timdtc), piperazine-(Pzdtc), N-methylpiperazine-(Mepzdtc), piperidine- (Pipdtc), 2-, 3- or 4-methylpiperidine-(2-, 3- and 4-Mepipdtc) carbodithionato-S,S ions, of the general formula [Co(cyclam)Rdtc](ClO4)2, were investigated in deoxygenated 0.1 MHClO4 solutions. Cyclic voltammetry data at a glassy carbon (GC) electrode demonstrate a redox reaction of cobalt(III) from the complexes at potentials st
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4

Tcho, Woon-Young, Bin Wang, Yong-Min Lee, Kyung-Bin Cho, Jason Shearer, and Wonwoo Nam. "A mononuclear nonheme cobalt(iii)–hydroperoxide complex with an amphoteric reactivity in electrophilic and nucleophilic oxidative reactions." Dalton Transactions 45, no. 37 (2016): 14511–15. http://dx.doi.org/10.1039/c6dt01194b.

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A mononuclear nonheme cobalt(iii)–hydroperoxide complex bearing a tetramethylated cyclam ligand, which is synthesized by the protonation of its corresponding cobalt(iii)–peroxide complex, exhibits an amphoteric reactivity in electrophilic and nucleophilic oxidative reactions.
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Marimuthu, Alexander, and Kannaiyan Pandian. "Electrochemical Detection of Hydrazine Using Cobalt Hexacynoferrate Deposited Carbon Sphere Modified Glassy Carbon Electrode." Advanced Materials Research 584 (October 2012): 324–28. http://dx.doi.org/10.4028/www.scientific.net/amr.584.324.

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Cobalt hexacynoferrate decorated carbon spheres (CoHCF@C) with few micron dimensions was synthesized by sequential deposition method in which the carbon sphere previously modified with cobalt ion exposed into potassium ferricyanide. The thickness of the CoHCF layer was restricted to five cycles. The formation of layer CoHCF was confirmed by FT-IR, XRD, HRSEM, EDX and cyclic voltammeter technique. The CoHCF decorated carbon sphere modified GCE was utilized as electron transfer mediator for electrocatalytic oxidation of hydrazine in phosphate buffer medium. The electrocatalytic behavior of modif
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Koshtyal, Yury, Ilya Mitrofanov, Denis Nazarov, et al. "Atomic Layer Deposition of Ni-Co-O Thin-Film Electrodes for Solid-State LIBs and the Influence of Chemical Composition on Overcapacity." Nanomaterials 11, no. 4 (2021): 907. http://dx.doi.org/10.3390/nano11040907.

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Nanostructured metal oxides (MOs) demonstrate good electrochemical properties and are regarded as promising anode materials for high-performance lithium-ion batteries (LIBs). The capacity of nickel-cobalt oxides-based materials is among the highest for binary transition metals oxide (TMOs). In the present paper, we report the investigation of Ni-Co-O (NCO) thin films obtained by atomic layer deposition (ALD) using nickel and cobalt metallocenes in a combination with oxygen plasma. The formation of NCO films with different ratios of Ni and Co was provided by ALD cycles leading to the formation
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Nakajima, Takeshi, Hiroyuki Hosokawa, and Koji Shimojima. "Influence of Cobalt Content on the Fatigue Strength of WC-Co Hardmetals." Materials Science Forum 534-536 (January 2007): 1201–4. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.1201.

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The behavior of hardmetals under cyclic loads is investigated. Unnotched specimens were employed to obtain practical information regarding fatigue in hardmetals. All the tested hardmetals exhibit an increase in the number of cycles until failure with a decrease in the maximum stress, i.e., the hardmetals exhibit a high fatigue sensitivity. The fatigue strength increases with the cobalt content. Although distinct fatigue limits, as observed in metals, cannot be observed, the calculated fatigue limit stress at 107 cycles is found to be approximately 70% of the flexural strength, and the stress v
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Vainoris, Modestas, Natalia Tsyntsaru, and Henrikas Cesiulis. "Modified Electrodeposited Cobalt Foam Coatings as Sensors for Detection of Free Chlorine in Water." Coatings 9, no. 5 (2019): 306. http://dx.doi.org/10.3390/coatings9050306.

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Metal foams offer a substantial specific surface area and sturdy frame, which makes them great candidates for various applications such as catalysts, sensors, heat sinks, etc. Cobalt and its various compounds are being considered as a cheaper alternative for precious and rare metal catalysts. The cobalt foams have been electrodeposited under galvanostatic and current pulse modes; the porous surface was created using a dynamic hydrogen bubble template. In order to obtain the highest porosity, four different solutions were tested, as well as a wide current density window (0.6–2.5 A/cm²), in addi
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Vuckovic, Gordana, V. Stanic, Sofija Sovilj, M. Antonijevic-Nikolic, and J. Mrozynski. "Cobalt(II) complexes with aromatic carboxylates and N-functionalized cyclam bearing 2-pyridylmethyl pendant arms." Journal of the Serbian Chemical Society 70, no. 8-9 (2005): 1121–29. http://dx.doi.org/10.2298/jsc0509121v.

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Novel binuclear Co(II) complexeswithN-functionalized cyclam N,N?,N",N???-tetrakis( 2-pyridylmethyl)tetraazacyclotetradecane (tpmc) and one of the aromatic monoor dicarboxylato ligands (benzoate, phthalate or isophthalate ions) were prepared. They were analyzed and studied by elemental analyses (C, H, N), electrical conductivities, VIS and IR spectroscopy andmagnetic as well as cyclic voltammetric measurements. In [Co2(C6H5COO)2tpmc]ClO4)2.3H2O, the benzoate ligands are most probably coordinated as chelates in the trans-position to each Co(II) and the macrocycle adopts a chair conformation. In
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Domenianni, Luis I., Reinhold Fligg, Annett Schäfermeier, et al. "Molecular and electronic structure of an azidocobalt(iii) complex derived from X-ray crystallography, linear spectroscopy and quantum chemical calculations." Physical Chemistry Chemical Physics 21, no. 36 (2019): 20393–402. http://dx.doi.org/10.1039/c9cp04350k.

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X-ray diffraction, UV/Vis electronic spectroscopy and Fourier-transform infrared spectroscopy are used with DFT and CAS calculations to explore the molecular and electronic structure of the cationic complex (cyclam)(diazido)cobalt(iii).
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Tesis sobre el tema "Cobalto cyclam"

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Maia, Danielle de Oliveira. "Desenvolvimento de um novo complexo macroc?clico do sistema cobalto cyclam." Universidade Federal do Rio Grande do Norte, 2011. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17650.

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Made available in DSpace on 2014-12-17T15:41:55Z (GMT). No. of bitstreams: 1 DanielleOM_DISSERT.pdf: 1963445 bytes, checksum: 143b241474d5026def897c0c4c0d797f (MD5) Previous issue date: 2011-07-12<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>In this work were synthesized and studied the spectroscopic and electrochemical characteristics of the coordination compounds trans-[Co (cyclam)Cl2]Cl, trans- Na[Co(cyclam)(tios)2], trans-[Co(en)2Cl2]Cl and trans-Na[Co(en)2(tios)2], where tios = thiosulfate and en = ethylenediamine. The compounds were characterized by: Elemental Anal
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2

Simon, Evelyne. "Etude des complexes cobalt(III)-cyclame-acétylacétonate : élaboration d'électrodes modifiées par des films de polypyrrole porteurs du site redox : co-cyclame." Brest, 1997. http://www.theses.fr/1997BRES2001.

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L'objectif de ce travail est la realisation d'electrodes modifiees, portant le site redox co#i#i#i(cyclame), par electropolymerisation de monomeres de pyrrole sybstitues en position 1 ou 3 par le complexe metallique. Le premier chapitre est consacre aux rappels bibliographiques concernant les electrodes modifiees, le polypyrrole et le cobalt-cyclame. L'etude de la nature du site catalytique choisi, co#i#i#i(cyclame), est exposee dans le chapitre 2. La structure du complexe co#i#i#i(cyclame)(acac)(bf#4)#2 a ete etablie sans abmiguite par diverses techniques spectroscopiques, electrochimiques et
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Soibinet, Mathieu. "Complexes du cuivre (II), nickel (II) et cobalt (III) avec des ligands bis macrocycliques dérivés du cyclam et du cyclen : Synthèse, études thermodynamique et structurale." Reims, 2002. http://www.theses.fr/2002REIMS023.

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Des ligands bis-macrocycliques dérivés du cyclam ou du cyclen ont été obtenus par une nouvelle méthode de synthèse via un intermédiaire bis-cis-aminal. L'étude des propriétés thermodynamiques et structurales des complexes formés entre ces ligands et les cations cuivre(II), nickel(II) et cobalt(III) a été réalisée. En solution aqueuse, l'étude potentiométrique et spectroscopique (RPE, UV visible) des complexes du cuivre(II) a montré l'existence, selon la valeur du rapport R = [ligand]/[métal], de complexes mononucléaires ou dinucléaires de très grande stabilité. A l'état solide, les complexes d
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Hawco, Nicholas James. "The cobalt cycle in the tropical Pacific Ocean." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/108907.

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Thesis: Ph. D., Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Although over a dozen elements are needed to support phytoplankton growth, only a few are considered to be growth-limiting. As the central atom in vitamin B12, cobalt is crucial for metabolism, but its status as a limiting nutrient is uncertain. This thesis investigates the geoche
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Bown, Johann. "Cycle biogéochimique du cobalt dans l'océan : du micronutritif au traceur de source lithogénique." Brest, 2011. http://www.theses.fr/2011BRES2052.

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Jorge, Ana Rita. "Molecularity imprinted nanogels as catalysts for phosphate hydrolysis : an approach based on cobalt-cyclem monomers." Thesis, Queen Mary, University of London, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538660.

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Huron, Eric S. "High temperature monotonic and cyclic deformation in a directionally solidified nickel-base superalloy." Thesis, Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/16093.

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Sá, Acelino Cardoso de [UNESP]. "Potencialidades eletroanalíticas de complexos binucleares de nitroprussiato de metais de transição suportado em 3-aminopropil sílica." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/91954.

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Made available in DSpace on 2014-06-11T19:25:32Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-01-26Bitstream added on 2014-06-13T19:12:22Z : No. of bitstreams: 1 sa_ac_me_ilha.pdf: 1061286 bytes, checksum: b370fdf160f4689709efe584af803c2a (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>O objetivo deste trabalho esta resumido através de três etapas. 1 - A primeira etapa consistiu em funcionalizar e caracterizar a sílica gel com grupos 3- aminopropiltrietoxisilano. Nesta etapa o material obtido (Si) foi caracterizado por técnicas de Ressonância Magnétic
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Andersen, Claire. "Catalyse au cobalt et au cuivre : Couplages croisés entre des (pseudo)halogénures d'alkyle et des réactifs de Grignard." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLET048.

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La majorité des médicaments sur le marché possède un ou plusieurs noyaux aromatiques au sein de leurs structures. Si ces motifs sont souvent essentiels à l’interaction des molécules avec leur cible, leur présence en trop grand nombre peut avoir des conséquences néfastes sur les propriétés physico-chimiques ou sur la toxicité des candidats médicaments. Il est donc intéressant de remplacer ces motifs par des bioisostères d’aryle, notamment par des cycles tendus (cyclopropanes, cyclobutanes, bicyclo[1.1.1]pentanes). Au cours de ce travail de thèse, deux méthodes permettant le couplage entre des (
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Dulaquais, Gabriel. "Cycle biogéochimique du cobalt en domaines océaniques contrastés : l'Atlantique Ouest, la Mer Méditerranée et la Mer Noire." Thesis, Brest, 2014. http://www.theses.fr/2014BRES0035/document.

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Le cobalt est un métal de transition essentiel pour la croissance du phytoplancton, et en particulier pour les cyanobactéries qui ont un besoin absolu pour cet élément. En étant l'atome central de la cobalamine (vitamine B12), le cobalt est aussi indirectement essentiel aux eucaryotes marins qui ne synthétisent pas cette vitamine. Cet élément peut se substituer au zinc et au cadmium au sein de la carbonique anhydrase, l’enzyme permettant la fixation du dioxyde de carbone dans la cellule phytoplanctonique. Il pourrait intervenir également dans l’activation de l’alcaline phosphatase. De par ses
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Libros sobre el tema "Cobalto cyclam"

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Barrett, Charles A. High-temperature cyclic oxidation data. National Aeronautics and Space Administration, Lewis Research Center, 1989.

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Barrett, Charles A. High-temperature cyclic oxidation data. National Aeronautics and Space Administration, Lewis Research Center, 1989.

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Barrett, Charles A. High-temperature cyclic oxidation data. National Aeronautics and Space Administration, Lewis Research Center, 1989.

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Sreeramesh, Kalluri, U.S. Army Research Laboratory., and United States. National Aeronautics and Space Administration., eds. Cyclic axial-torsional deformation behavior of a cobalt-base superalloy. National Aeronautics and Space Administration, 1992.

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Sreeramesh, Kalluri, U.S. Army Research Laboratory., and United States. National Aeronautics and Space Administration., eds. Cyclic axial-torsional deformation behavior of a cobalt-base superalloy. National Aeronautics and Space Administration, 1992.

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Cyclic axial-torsional deformation behavior of a cobalt-base superalloy. National Aeronautics and Space Administration, 1995.

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Sreeramesh, Kalluri, U.S. Army Research Laboratory., and United States. National Aeronautics and Space Administration., eds. Cyclic axial-torsional deformation behavior of a cobalt-base superalloy. National Aeronautics and Space Administration, 1992.

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Sreeramesh, Kalluri, U.S. Army Research Laboratory., and United States. National Aeronautics and Space Administration., eds. Cyclic axial-torsional deformation behavior of a cobalt-base superalloy. National Aeronautics and Space Administration, 1992.

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Reimer, Steven. Synthesis and characterization of some cobalt complexes of tetramethylcyclam. 1991.

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A, Barrett Charles, and United States. National Aeronautics and Space Administration., eds. The effect of Cr, Co, Al, Mo, and Ta on a series of cast Ni-base superalloys on the stability of an aluminide coating during cyclic oxidation in Mach 0.3 burner rig. National Aeronautics and Space Administration, 1986.

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Capítulos de libros sobre el tema "Cobalto cyclam"

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Del Puglia, A., F. Betti, E. Giorni, F. Pratesi, and G. Zonfrillo. "Low-Cycle and Bithermal Fatigue of a Cobalt-Base Superalloy." In Materials for Advanced Power Engineering 1994. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1048-8_73.

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Zevaco, Thomas A., and Arjan W. Kleij. "Nonreductive Reactions of CO2 Mediated by Cobalt Catalysts: Cyclic and Polycarbonates." In Non-Noble Metal Catalysis. Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527699087.ch19.

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Chen, L. J., P. K. Liaw, Y. H. He, et al. "Influence of Hold Time and Temperature on Low-Cycle Fatigue Behavior of Cobalt-Based Superalloy Haynesr̀ 188." In Fatigue and Fracture Behavior of High Temperature Materials. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118787823.ch11.

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"Cobalt Complex Based on Cyclam for Reversible Binding of Nitric Oxide." In Industrial Applications of Molecular Simulations. CRC Press, 2016. http://dx.doi.org/10.1201/b11485-22.

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Gleiter, R., and D. B. Werz. "Reactions of Cyclic Alkynes with (η-Cyclopentadienyl)cobalt(I)." In Polyynes, Arynes, Enynes, and Alkynes. Georg Thieme Verlag KG, 2008. http://dx.doi.org/10.1055/sos-sd-043-00559.

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Peter, K., C. Vollhardt, and Michael J. Eichberg. "The Synthesis of (±)-Strychnine VIA A Cobalt-Mediated [2 + 2 + 2] Cyclo Addition." In Strategies and Tactics in Organic Synthesis. Elsevier, 2004. http://dx.doi.org/10.1016/s1874-6004(04)80018-2.

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Pluzhnikova, Tatyana Nikolaevna, Arseniy Dmitrievich Berezner, Viktor Aleksandrovich Fedorov, et al. "The study of physical and mechanical properties of amorphous metallic alloys based on cobalt under high-cycle electrofatigue." In Application to Journal. Tambov University Reports. Series: Natural and Technical Sciences. Publishing House “Derzhavinskiy”, 2018. http://dx.doi.org/10.20310/1810-0198-2018-23-123p-508-511.

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Keefer, Robert F. "Soil Nutrients (Soil Fertility)." In Handbook of Soils for Landscape Architects. Oxford University Press, 1999. http://dx.doi.org/10.1093/oso/9780195121025.003.0012.

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Under the section on “Soil Aeration” (Chapter 4), it was explained that all living plants respire. This is the process where oxygen is used to burn food into carbon dioxide and water. Now we will consider another process used by green plants to manufacture their own food called “photosynthesis,” In photosynthesis, carbon dioxide and water are used along with light energy in the plant cell chloroplasts (containing chlorophyll) to produce their own food (carbohydrates) with oxygen produced as a by-product: Although this seems to be the opposite process from respiration, yet there are differences. Note that light energy and chlorophyll are required in photosynthesis. Chlorophyll is the green coloring matter in plants. There are, at present, seventeen (17) elements that plants need to grow and complete their life cycle. These are called “essential elements” or “nutrients.” Usually an essential element cannot be completely replaced by any other element. There are also four (4) other elements, although not essential, that help plants to grow better. These are called “functional” or “metabolic.” To remember all of these elements a memory aid, a mnemonic (the first letter is silent) has been devised. The 21 elements used by plants, carbon (C), hydrogen (H), oxygen (O), phosphorus (P), potassium (K), nitrogen (N), sulfur (S), calcium (Ca), magnesium (Mg), copper (Cu), zinc (Zn), nickel (Ni), cobalt (Co), manganese (Mn), molybdenum (Mo), vanadium (V), boron (B), silicon (Si), chlorine (Cl), and sodium (Na), can be listed in their chemical abbreavtions with the mnemonic below: The elements carbon, hydrogen, and oxygen can be considered nonmineral elements, as these are obtained by plants from air and water (O2, CO2, and H2O) and not from the soil. Plants use these three elements to form simple carbohydrates from which large amounts of more complex plant compounds (about 95% of plant tissue) are formed. There is little control of these elements by man, except for water. Supplemental CO2 has been provided to plants to increase photosynthesis by using solid CO2 (dry ice), hut this has not proved economical.
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Actas de conferencias sobre el tema "Cobalto cyclam"

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Vahedi, Nasser, and Alparslan Oztekin. "Experimental Analysis of Kinetics and Cyclic Performance of Cobalt Oxide Powder As Redox Reactant Agent for High-Temperature Thermochemical Energy Storage." In ASME 2019 Heat Transfer Summer Conference collocated with the ASME 2019 13th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ht2019-3681.

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Abstract For continuous operation of Concentrated Solar Power (CSP) Plants it is necessary to integrate thermal energy storage module. High-density energy storage system at a high temperature is required for the new generation of large scale CSP plants. The Thermochemical Energy Storage (TCES) systems use the enthalpy of formation of a reversible chemical reaction for energy storage and release. Gas/solid reduction-oxidation (redox) reactions of solid metal oxides using air as heat transfer fluid (HTF) can be directly integrated with air operated CSP plants, and there is no need for HTF storag
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Vahedi, Nasser, Carlos E. Romero, Mark A. Snyder, and Alparslan Oztekin. "Study of Heating and Cooling Rate of Cobalt Oxide-Based TCES System Using Experimental Redox Kinetics Analysis." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-10734.

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Abstract Cost-effective solar power generation in CSP plants requires the challenging integration of high energy density and high-temperature thermal energy storage with the solar collection equipment and the power plant. Thermochemical energy storage (TCES) is currently a very good option for thermal energy storage, which can meet the industry requirement of large energy density and high storage temperature. TCES specifically exploits reversible chemical reactions wherein heat is absorbed during the forward endothermic reaction and released during the reverse exothermic reaction. The associat
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Mishra, Ashutosh, Samrath Ninama, and Niyati Mishra. "XRD, SEM and EXAFS investigation of cobalt (II) macro cyclic complexes." In SOLID STATE PHYSICS: Proceedings of the 56th DAE Solid State Physics Symposium 2011. AIP, 2012. http://dx.doi.org/10.1063/1.4709931.

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Paris, Anthony, Alex Bergeron, Matthew Cullin, and Andres Munk. "Fatigue Behavior of Stainless Steel, Titanium, and Cobalt Chromium Molybdenum Spinal Rods." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19720.

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The objective of this study was to measure and compare the fatigue behavior of 316L stainless steel, titanium (Ti-6Al-4V), and cobalt chromium molybdenum (CoCrMo) spinal rods in vitro. Spinal rods are used to immobilize the spine while fusion of the vertebrae occurs (spinal arthrodesis). Implanted spinal rods are subjected to cyclic loading and are therefore susceptible to fatigue failure if fusion does not occur sufficiently quickly. A significant number of spinal rod fatigue failures have been observed between six months to one year following surgical implantation. On average, the spine will
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Glaeser, Thorsten, Axel Demmer, and Fritz Klocke. "Liquid-Phase Sintering of Tungsten Carbide-Cobalt by Laser Radiation." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59534.

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Laser Sintering is a powder metallurgical process. The principle of Laser Sintering is based on a local densification of powdered materials as a result of the absorption of laser radiation. Through a cyclic repetition of material application, densification and the lowering of a build-up plate, a three dimensional geometry develops. Within the Laser Sintering (liquid-phase sintering) of tungsten carbide-cobalt (WC-Co) the low melting material, the metal binder phase cobalt, is temporarily transferred into the liquid phase. The high melting WCphase is not melted and remains fine dispersed in the
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6

Allen, Kyle M., James F. Klausner, Eric N. Coker, Nick AuYeung, and Rishi Mishra. "Synthesis and Analysis of Cobalt Ferrite in YSZ for Use as Reactive Material in Solar Thermochemical Water and Carbon Dioxide Splitting." In ASME 2013 7th International Conference on Energy Sustainability collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/es2013-18254.

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This paper reports the synthesis, characterization and evaluation of different weight loadings of cobalt ferrite (CoFe2O4) in 8 mol% yttria-stabilized zirconia (8YSZ) via the co-precipitation method. Prepared powders were calcined at 1350 °C for 36 hours and 1450 °C for 4 hours in air. These powders were then formed into a porous structure using sacrificial pore formation via oxidation of co-mixed graphite powder. These formed structures obtained were then characterized using thermogravimetric analysis (TGA), X-ray diffraction (XRD), high temperature X-ray diffraction (HT-XRD), scanning electr
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7

Burra, K. G., and A. K. Gupta. "Isothermal Splitting of CO2 to CO Using Cobalt-Ferrite Redox Looping." In ASME 2020 Power Conference collocated with the 2020 International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/power2020-16960.

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Abstract Rising atmospheric CO2 levels from significant imbalance between carbon emissions from fossil fuel utilization, especially for energy and chemicals, and natural carbon sequestration rates is known to drive-up the global temperatures and associated catastrophic climate changes, such as rising mean sea level, glacial melting, and extinction of ecosystems. Carbon capture and utilization techniques are necessary for transition from fossil fuel infrastructure to renewable energy resources to help delay the dangers of reaching to the point of positive feedback between carbon emissions and c
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8

Vahedi, Nasser, and Alparslan Oztekin. "Split Flow Modified Packed Bed Reactor for Cobalt Oxide Based High-Temperature TCES Systems." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-10740.

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Abstract The new generation of Concentrated Solar Power (CSP) plants requires high temperature and high energy density storage system with good cyclic stability. The potential solution satisfying such requirements is the thermochemical energy storage (TCES) using gas-solid redox reaction. Design of efficient storage reactor is very critical for applications of such storage systems. Packed bed reactors have a simpler design with no moving components and are more cost-effective compared to other available moving bed design configurations while having high-pressure drop is their main drawback. An
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9

Rosas, Omar, Atahualpa Oscar Garcia, Jose Hernandez, Carlos Girault, and Donald Oldiges. "Nut-Factor Variation on Coated High-Strength Steel Fasteners After Cycling Torquing." In ASME 2019 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/pvp2019-93874.

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Abstract This study presents recent research results on the Nut-Factor of coatings applied to high-strength steel threaded fasteners mainly used in the Oil and Gas industry. PTFE coatings are commonly used to protect B7 grade material from corrosion within the industrial marketplace; however, most coatings applied to threaded fasteners do not offer a consistent tightening and they are affected by torquing during assembly. This results in an inconsistent Nut-Factor and accuracy of the provided nut-factor is not only inconsistent but also lower than most published values. The lack of consistency
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10

Sato, M., Y. Kobayashi, H. Matsuzaki, et al. "Development of a Cobalt Base Superalloy for Heavy Duty Gas Turbine Nozzles." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-390.

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This paper describes an improvement in creep strength and thermal fatigue and hot corrosion resistance of a cobalt base superalloy developed for the applications of heavy duty gas turbine nozzles. The developed alloy has superior resistance to creep, thermal fatigue and hot corrosion over that of conventional alloys. The optimization of alloying elements which improve the creep properties and restrain the coarsening of carbides is discussed. A reduction in the volume fraction of eutectic carbides promoted the prevention of fast thermal fatigue cracking and also increased the hot corrosion resi
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