Relevant bibliographies by topics / 5-CuO

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

Academic literature on the topic '5-CuO'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "5-CuO"

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Frerichs, D., and Hk Müller-Buschbaum. "Vier verschiedene Koordinationspolyeder um Cu2+ im Oxid-Arsenat-Phosphat CuO(Cu,Mg)3(As1–xPxO4)2 (x = 0,3) / Four Different Coordination Polyhedra Around Copper in the Oxide-Arsenate-Phosphate CuO(Cu,Mg)3(As1-xPxO4)2 (x = 0,3)." Zeitschrift für Naturforschung B 51, no. 1 (January 1, 1996): 25–28. http://dx.doi.org/10.1515/znb-1996-0106.

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Abstract Single crystals of CuO(Cu,Mg)3[(As0.7P0.3)O4]2 have been prepared by crystallization from melts. The compound crystallizes with triclinic symmetry, space group Ci1-P1̄, a = 6.372(4), b = 7.643(7), c = 8.175(5) Å, α = 98.59(6), β = 112.26(3), γ = 99.03(3)°, Z = 2. CuO(Cu,Mg)3[(As0.7P0.3)O4]2 is isotypic to Cu4(PO4)2O . X-ray investigations show square planar CuO4 polygons, twisted tetragonal CuO5 pyramids, CuO5 bipyramids and elongated (Cu,Mg)O6 octahedra.
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Kong, Wusong, Hongxia Qu, Peng Chen, Weihua Ma, and Huifang Xie. "Property of Cu2O-CuO/ZSM-5 nanocomposite and degradation process of azo dye AO7 without sacrificial agent (H2O2)." Water Science and Technology 73, no. 11 (March 11, 2016): 2747–53. http://dx.doi.org/10.2166/wst.2016.138.

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In this study, Cu2O-CuO/ZSM-5 nanocomposite was synthesized by the impregnation method, and its catalytic performance for the destruction of AO7 in aqueous solutions was investigated. The morphology, structure and surface element valence state of Cu2O-CuO/ZSM-5 were characterized by transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The operating conditions on the degradation of AO7 by Cu2O-CuO/ZSM-5, such as initial pH values, concentration of AO7 and catalyst dosage were investigated and optimized. The results showed that the sample had good catalytic activity for destruction of AO7 in the absence of a sacrificial agent (e.g. H2O2): it could degrade 91% AO7 in 140 min at 25 °C and was not restricted by the initial pH of the AO7 aqueous solutions. Cu2O-CuO/ZSM-5 exhibited stable catalytic activity with little loss after three successive runs. The total organic carbon and chemical oxygen demand removal efficiencies increased rapidly to 69.36% and 67.3% after 120 min of treatment by Cu2O-CuO/ZSM-5, respectively.
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Alam, Mir Waqas, Farooq Ahmad Dar, Fida Mohmed, Abdullah Aljaafari, and Osama Saber. "Augmentation of ferromagnetism in CuO–Al2O3 nanocomposite synthesized via solution combustion method." Materials Express 9, no. 6 (September 1, 2019): 653–59. http://dx.doi.org/10.1166/mex.2019.1549.

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The finite size effect of CuO nanoparticles and their effect on the magnetic behavior of a CuO–Al2O3 nanocomposite synthesized via a solution combustion method are discussed here. It is observed that the introduction of CuO nanoparticles of ∼20 nm in size on the surfaces of Al2O3 nanosheets strongly influences the magnetic moment of the nanocomposite. The X-ray diffraction pattern reveals the presence of a CuO phase in the CuO–Al2O3 nanocomposite. Electron microscopy imaging shows the presence of CuO nanoparticles distributed over the surfaces of Al2O3 nanosheets. Magnetic measurements performed at 5 and 300 K revealed a strong enhancement in the saturation magnetization of the CuO–Al2O3 nanocomposite at both temperatures. This increase is due to the formation of CuO nanoparticles on the surfaces of the Al2O3 nanosheets. These CuO nanoparticles show a ferromagnetic nature due to the uncompensated surface Cu2+ spins of the copper ions. The presence of the Cu2+ state in the CuO nanoparticles in the CuO–Al2O3 nanocomposite was confirmed by X-ray photoelectron spectroscopy (XPS) measurements.
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Supakosl, Benjara, Vatcharinkorn Mekla, and Chakkaphan Raksapha. "Effect of Temperature and Synthesis of CuO Nanostructures on Cu Plate by Thermal Method." Advanced Materials Research 634-638 (January 2013): 2160–62. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.2160.

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CuO nanostructures were synthesized by thermal evaporation method using Cu metal plate in air at temperatures ranging from 400 to 600 C for 6 h. The CuO nanostructures were characterized by X-ray diffraction, XRD and field emission scanning electron microscopy, FE-SEM. X-ray diffraction, XRD pattern showed the bicrystal nanostructure of CuO and Cu2O. FE-SEM images indicated that the nanowires depended on temperatures. The diameter of Cuo nanowires varies from 10 nm to 20 nm and length of several 5 micrometers.
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Adamson, Sherleen Xue-Fu, Wei Zheng, Zeynep Sena Agim, Sarah Du, Sheila Fleming, Jonathan Shannahan, and Jason Cannon. "Systemic Copper Disorders Influence the Olfactory Function in Adult Rats: Roles of Altered Adult Neurogenesis and Neurochemical Imbalance." Biomolecules 11, no. 9 (September 6, 2021): 1315. http://dx.doi.org/10.3390/biom11091315.

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Disrupted systemic copper (Cu) homeostasis underlies neurodegenerative diseases with early symptoms including olfactory dysfunction. This study investigated the impact of Cu dyshomeostasis on olfactory function, adult neurogenesis, and neurochemical balance. Models of Cu deficiency (CuD) and Cu overload (CuO) were established by feeding adult rats with Cu-restricted diets plus ip. injection of a Cu chelator (ammonium tetrathiomolybdate) and excess Cu, respectively. CuD reduced Cu levels in the olfactory bulb (OB), subventricular zone (SVZ), rostral migratory stream (RMS), and striatum, while CuO increased Cu levels in these areas. The buried pellet test revealed both CuD and CuO prolonged the latency to uncover food. CuD increased neural proliferation and stem cells in the SVZ and newly differentiated neurons in the OB, whereas CuO caused opposite alterations, suggesting a “switch”-type function of Cu in regulating adult neurogenesis. CuO increased GABA in the OB, while both CuD and CuO reduced DOPAC, HVA, 5-HT and the DA turnover rate in olfactory-associated brain regions. Altered mRNA expression of Cu transport and storage proteins in tested brain areas were observed under both conditions. Together, results support an association between systemic Cu dyshomeostasis and olfactory dysfunction. Specifically, altered adult neurogenesis along the SVZ-RMS-OB pathway and neurochemical imbalance could be the factors that may contribute to olfactory dysfunction.
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Yang, Yuran, Can Zhang, Xuejiao Huang, Xuwei Gui, Yifang Luo, and Zhenlun Li. "Exogenous Fe2+ alleviated the toxicity of CuO nanoparticles on Pseudomonas tolaasii Y-11 under different nitrogen sources." PeerJ 8 (November 10, 2020): e10351. http://dx.doi.org/10.7717/peerj.10351.

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Extensive use of CuO nanoparticles (CuO-NPs ) inevitably leads to their accumulation in wastewater and toxicity to microorganisms that effectively treat nitrogen pollution. Due to the effects of different mediums, the sources of CuO-NPs-induced toxicity to microorganisms and methods to mitigating the toxicity are still unclear. In this study, CuO-NPs were found to impact the nitrate reduction of Pseudomonas tolaasii Y-11 mainly through the action of NPs themselves while inhibiting the ammonium transformation of strain Y-11 through releasing Cu2+. As the content of CuO-NPs increased from 0 to 20 mg/L, the removal efficiency of NO3− and NH4+ decreased from 42.29% and 29.83% to 2.05% and 2.33%, respectively. Exogenous Fe2+ significantly promoted the aggregation of CuO-NPs, reduced the possibility of contact with bacteria, and slowed down the damage of CuO-NPs to strain Y-11. When 0.01 mol/L Fe2+ was added to 0, 1, 5, 10 and 20 mg/L CuO-NPs treatment, the removal efficiencies of NO3- were 69.77%, 88.93%, 80.51%, 36.17% and 2.47%, respectively; the removal efficiencies of NH4+ were 55.95%, 96.71%, 38.11%, 20.71% and 7.43%, respectively. This study provides a method for mitigating the toxicity of CuO-NPs on functional microorganisms.
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Puchert, M. K., A. Hartmann, R. N. Lamb, and J. W. Martin. "Highly resistive sputtered ZnO films implanted with copper." Journal of Materials Research 11, no. 10 (October 1996): 2463–69. http://dx.doi.org/10.1557/jmr.1996.0310.

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Polycrystalline (0001)-oriented thin films of ZnO (thickness 120 nm) were deposited by rf magnetron sputtering and post-deposition annealed at 500 °C in oxygen (1 atm). The films were subsequently implanted with copper at doses over the range 1016 to 1017 ions/cm2. X-ray diffraction (XRD) indicates the compressive intrinsic film stress is largely relieved by the preimplantation anneal, and does not change when implanted or when further annealed after implantation, suggesting that the dominant cause of intrinsic stress is the atomic packing density rather than the crystallographic defect density. Resistivity measurements indicate that annealing of pure ZnO films causes the perpendicular resistivity to increase from 1.3 × 105 Ω · cm to 5 × 1010 Ω · cm. Copper implantation results in a lower resistivity of the order of 107 Ω · cm, but subsequent annealing actually increases resistivity beyond that of annealed nonimplanted ZnO to 3 × 1012 Ω · cm. It is proposed that copper increases the resistivity of those annealed films by trapping free electrons with the Cu 3d hole state occurring in CuO (formed predominantly during annealing). In order to check this, the oxidation state of the implanted copper was studied before and after annealing by x-ray photoelectron spectroscopy (XPS) and extended x-ray absorption fine structure (EXAFS). Three oxidation states of copper (Cu0, Cu1+, Cu2+) are detected in the implanted films, and postimplantation annealing results in oxidation of copper to the Cu2+ state, confirming that the presence of CuO in ZnO is associated with increased resistivity.
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Khan, Rizwan, Muhammad Ali Inam, Saba Zam Zam, Muhammad Akram, Sookyo Shin, and Ick Tae Yeom. "Coagulation and Dissolution of CuO Nanoparticles in the Presence of Dissolved Organic Matter Under Different pH Values." Sustainability 11, no. 10 (May 17, 2019): 2825. http://dx.doi.org/10.3390/su11102825.

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The increased use of copper oxide nanoparticles (CuO NPs) in commercial products and industrial applications raises concerns about their adverse effects on aquatic life and human health. Therefore, the current study explored the removal of CuO NPs from water via coagulation by measuring solubility under various pH values and humic acid (HA) concentrations. The results showed that the media pH significantly affected the coagulation efficiency of CuO NPs (30 mg/L) under various (0–0.30 mM) ferric chloride (FC) dosages. The concentration of dissolved Cu2+ ions at pH 3–6 was (16.5–4.8 mg/L), which was higher than at other studied pH (7–11). Moreover, the simultaneous effect of coagulants and charge neutralization at pH 6–8 enhanced the removal of CuO NPs. At a lower FC (0–0.05 mM) dosage, the higher HA concentration inhibited the aggregation of CuO NPs. However, at the optimum dose of (0.2 mM) FC, the efficiency of turbidity removal and solubility of CuO NPs between pH 8 and 11 was above 98% and 5%, respectively, probably due to coagulant enmeshment. Our study suggested that coagulation was effective in removing the CuO NPs from the complex matrices with pH values ranging from 8–11. The findings of the present study provide insight into the coagulation and dissolution behavior of CuO NPs during the water treatment process.
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Sapkota, Kamal Prasad, Insup Lee, Md Abu Hanif, Md Akherul Islam, Jeasmin Akter, and Jae Ryang Hahn. "Enhanced Visible-Light Photocatalysis of Nanocomposites of Copper Oxide and Single-Walled Carbon Nanotubes for the Degradation of Methylene Blue." Catalysts 10, no. 3 (March 5, 2020): 297. http://dx.doi.org/10.3390/catal10030297.

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We report enhanced catalytic action of a series of copper(II)-oxide-single-walled carbon nanotube (CuO-SWCNT) composite photocatalysts (abbreviated as CuO-SWCNT-0.5, CuO-SWCNT-2, and CuO-SWCNT-5, where 0.5, 2, and 5 represent the calcination time in hours) synthesized via recrystallization followed by calcination. The photocatalytic performance of the fabricated nanocomposites was examined by evaluating the degradation of methylene blue (MB) under irradiation with visible light. All of the as-fabricated nanocomposites were effective photocatalysts for the photodegradation of a MB solution; however, the CuO-SWCNT-5 displayed the best photocatalytic ability among the investigated catalysts, achieving 97.33% degradation of MB in 2 h under visible-light irradiation. The photocatalytic action of the nanocomposites was remarkably higher than that of pristine CuO nanocrystals fabricated using the same route. The recyclability of the photocatalyst was also investigated; the CuO-SWCNT-5 catalyst could be reused for three cycles without substantial degradation of its catalytic performance or morphology.
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Vo, Nguyen Lam Uyen, Thi Thuy Van Nguyen, Tri Nguyen, Phung Anh Nguyen, Van Minh Nguyen, Ngoc Huy Nguyen, Van Linh Tran, Ngoc Anh Phan, and Ky Phuong Ha Huynh. "Antibacterial Shoe Insole-Coated CuO-ZnO Nanocomposite Synthesized by the Sol-Gel Technique." Journal of Nanomaterials 2020 (December 17, 2020): 1–13. http://dx.doi.org/10.1155/2020/8825567.

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In this study, CuO-ZnO composite was synthesized via the sol-gel method using oxalic acid to form the medium complex and its applications in antibacterial have been conducted with B. cereus, E. coli, S. aureus, Salmonella, and P. aeruginosa. Then, nanopowder of CuO-ZnO was coated on shoe insoles and their antibacterial effect with S. aureus was tested. The nanocomposite products were characterized by XRD, XPS, SEM, TEM, and UV-Vis. The results showed that the CuO-ZnO composite has the average particle size in a range of 20-50 nm, the point of zero charge of 7.8, and the bandgap of 1.7 eV. XPS result shows the composite structure with Cu2+ in the product. The minimum inhibitory concentration (MIC) of CuO-ZnO nanocomposite was 0.313 mg·mL-1 for S. aureus and Samonella, 0.625 mg·mL-1 for E. coli, and 5 mg·mL-1 for B. cereus and P. aeruginosa. The shoe insoles coated with 0.35 wt.% of CuO-ZnO nanocomposite also had high antibacterial activity against S. aureus, and this antibacterial nanocomposite was implanted durably on the surface of the shoe insoles.
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Dissertations / Theses on the topic "5-CuO"

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Caillault, Nathalie. "Systeme cuo-bi#2o#3-sb#2o#3 structures et proprietes electriques des ceramiques de type pyrochlore m#i#im#1#,#5#i#i#im#1#,#5#vo#7 (m#i#i=cu, zn, cd; m#i#i#i=bi, y, gd; m#v=sb, nb)." Limoges, 1990. http://www.theses.fr/1990LIMO0096.

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L'etude du systeme cuo-bi#2o#3-sb#2o#5 a permis de mettre en evidence, outre quatre composes definis deja signales: bisbo#4, bi#3sbo#7, cusb#2o#6 et cubi#2o#4, un compose defini cu#4sb#2o#9 bixbyite et deux phases non-stchiometriques bi#1#-#xcu#xo#1#,#5#-#x#/#2 sillenite et cu#2#-#2#xbi#3#xsb#2#-#xo#7 pyrochlore. Les substitutions cationiques (la, y, gd-bi; nb-sb) realisees sur la phase prototype mb#1#,#5sb#1#,#5o#7 (m=cu, zn, cd) ont permis d'etudier l'influence des differents cations sur les proprietes cristallochimiques et les proprietes electriques qui en resultent
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Costa, Maria Jos? Fonseca. "S?ntese e caracteriza??o de materiais nanoporosos para pir?lise catal?tica de ?leos pesados." Universidade Federal do Rio Grande do Norte, 2008. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17609.

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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior
The present work reports the study of nanoporous structures, aiming at their use in research directed to the current demand of the petroleum industry to value heavy oil. Initially, two ways were chosen for the synthesis of porous structures from the molecular sieves of type Si-MCM-41. In the first way, the structure MCM-41 is precursory for heteroatom substitutes of silicon, generating catalyst of the type Al-MCM-41 from two different methods of incorporation of the metal. This variation of the incorporation method of Aluminum in the structure of Si-MCM-41 was carried out through the conventional procedure, where the aluminum source was incorporated to the gel of synthesis, and the procedure post-synthesis, where the Aluminum source was incorporated in catalyst after the synthesis of Si-MCM-41. In the second way, the MCM-41 acts as a support for growth of nanocrystals of zeolite embedded in their mesoporous, resulting in hybrid MCM-41/ZSM-5 catalyst. A comparative analysis was carried through characterizations by XRD, FTIR, measures of acidity through n-butylamine adsorption for TGA, SEM-XRF and N2 adsorption. Also crystalline aluminosilicate with zeolitic structure MFI of type ZSM-5 was synthesized without using organic templates. Methodologies to the preparation of these materials are related by literature using conventionally reactants that supply oxides of necessary silicon and aluminum, as well as a template agent, and in some cases co-template. The search for new routes of preparation for the ZSM-5 aimed at, above all, the optimization of the same as for the time and the temperature of synthesis, and mainly the elimination of the use of organic templates, that are material of high cost and generally very toxic. The current study is based on the use of the H2O and Na+ cations playing the role of structural template and charge compensation in the structure. Characterizations by XRD, FTIR, SEM-XRF and N2 adsorption were also conducted for this material in order to compare the samples of ZSM-5 synthesized in the absence of template and those used industrially and synthesized using structuring
O presente trabalho relata o estudo de estruturas nanoporosas, visando o uso em pesquisas que atendam a atual demanda da ind?stria do petr?leo, de valorizar ?leos pesados. Inicialmente, optou-se por duas vertentes para a s?ntese de estruturas porosas a partir da peneira molecular do tipo Si-MCM-41. Na primeira vertente, a estrutura MCM-41 ? precursora para hetero?tomos substituintes do sil?cio, gerando catalisadores do tipo Al-MCM-41 a partir de dois diferentes m?todos de incorpora??o do metal. Essa varia??o do m?todo de incorpora??o do Alum?nio na estrutura do Si-MCM-41 se deu atrav?s do procedimento convencional, no qual a fonte de alum?nio foi incorporada ao gel de s?ntese e do procedimento p?s-s?ntese, no qual a fonte de Alum?nio foi incorporada ao catalisador ap?s a s?ntese do Si-MCM-41. Na segunda vertente, o MCM-41 age como suporte para o crescimento de nanocristais de ze?lita embutidos nos seus mesoporos, resultando no catalisador h?brido MCM-41/ZSM-5. Uma an?lise comparativa foi realizada atrav?s de caracteriza??es por XRD, FTIR, medidas de acidez atrav?s de dessor??o de n-butilamina por TGA, SEM-XRF e Adsor??o de N2. Tamb?m foi sintetizado um aluminossilicato cristalino com estrutura zeol?tica MFI do tipo ZSM-5, na aus?ncia total de direcionador org?nico. Metodologias relacionadas ? prepara??o desses materiais s?o relatadas pela literatura utilizando-se convencionalmente reagentes que forne?am os ?xidos de sil?cio e de alum?nio necess?rios, bem como um agente direcionador, e em alguns casos at? co-direcionadores. A busca por novas rotas de prepara??o para a ZSM-5 visou, sobretudo, a otimiza??o da mesma no que se refere ao tempo e ? temperatura de s?ntese, e principalmente a elimina??o do uso dos direcionadores org?nicos, que s?o materiais de alto custo e geralmente muito t?xicos. O atual estudo se baseia na utiliza??o da H2O e dos c?tions Na+ desempenhando o papel de direcionamento estrutural e compensa??o de cargas na estrutura. Caracteriza??es por XRD, FTIR, SEM-XRF e Adsor??o de N2 tamb?m foram realizadas para esse material, a fim de comparar as amostras de ZSM-5 sintetizadas na aus?ncia do direcionador e aquelas utilizadas industrialmente e sintetizadas utilizando estruturantes
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Nganga, Léon. "Contribution à l'étude du matériau supraconducteur à température critique élevée YBa2Cu3O7: cristallogénèse et caractérisations physico-chimiques." Phd thesis, Université Sciences et Technologies - Bordeaux I, 1990. http://tel.archives-ouvertes.fr/tel-00173106.

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Des monocristaux de YBa2Cu3O7 ont été préparés par une méhode de flux en creuset d'or. Une analyse des spirales de croissance et des domaines ferroélastiques révélés par une étude en microscopie optique en lumière polarisée et en microscopie électronique a balayage sur la face principale (001) à été effectuée. Un ensemble de caractérisations physico-chimiques (diffraction X, EPMA, détermination de la température critique par mesures électriques, spectroscopie micro-Raman, mesures des susceptibilités alternatives en champ faible) réalisé sur des cristaux bruts de croissance et recuits sous oxygène à permis de relier l'évolution des propriétés supraconductrices à la non stoechiométrie en oxygène. Enfin le phénomène de dégradation atmosphérique de YBa2Cu3O7 à été confirmé par une étude sur monocristal, à l'aide des techniques spectroscopiques (micro-Raman, Auger, XPS)
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CASTRO, Aleff Cruz de. "SENSOR ELETROQUÍMICO À BASE DE NiAlPO-5 PARA DETERMINAÇÃO DE Cu2+ EM ETANOL COMBUSTÍVEL." Universidade Federal do Maranhão, 2017. http://tedebc.ufma.br:8080/jspui/handle/tede/1242.

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CNPq, FAPEMA, CAPES, FSADU
Zeolites are microporous inorganic materials with a variety of applications in several areas of science and engineering. Their physical and chemical properties are attributed to the large internal surface area, and the chemical and hydrothermal stability, which are induced by the existence of well defined channels and/or cavities. These structural characteristics promote the use of zeolites as catalysts, molecular sieves, ion exchangers and, more recently, as electrochemical sensors. Taking in consideration these premises, this work describes the development of an electrochemical sensor obtained from the modification of the polyurethane graphite composite electrode with NiAlPO-5, a nickel-modified AFI aluminophosphate, and its application for determination of Cu2+ in ethanol biofuel. The synthesis of the aluminophosphates were conducted by the hydrothermal method and the obtained materials were characterized by X-ray diffraction, scanning electron microscopy, 31P nuclear magnetic resonance and UV-Vis and infrared spectroscopy. After synthesis and characterization, materials were used as modifiers (10%) in GPU electrodes in order to compare the performance of the unmodified and modified electrodes by Square Wave Anodic Stripping Voltammetry. The results showed that the incorporation of Ni to the material structure promotes an improvement in the electrical properties and analytical properties of the electrode. The analytical response of the sensor in the copper ion determination showed that the NiAlPO-5 electrode is more sensitive in terms of peak current than the electrolyte based on AlPO-5 only. The best response was obtained with the Ni/Al ratio of 0.5 on the NiAlPO-5 sensor. The experimental conditions of potential and deposition time, pulse amplitude, step potential, frequency and pH were optimized in an electrochemical cell containing 2 mL of ethanol, 8 mL of HCl 0.1 mol L-1 and Cu2+ concentration of 2.5×10-7 mol L-1. GPU/NiAlPO-5 modified sensor was then evaluated for electroanalytical determination of Cu2+ in ethanol biofuel samples presenting a linear response for Cu2+. Good results were obtained for the limit of detection (9.44×10-9 mol L-1), accuracy (recovery of 115%) and precision (RSD of 5.92%).
As zeólitas são materiais inorgânicos microporosos que apresentam uma grande variedade de aplicações em diversas áreas das ciências e engenharias. Suas propriedades físicas e químicas são atribuídas à grande área superficial interna e à estabilidade química e hidrotérmica, as quais são induzidas pela existência de canais e/ou cavidades bem definidos, tornando possível a sua utilização como catalisadores, peneiras moleculares, trocadores iônicos e, mais recentemente, como sensores eletroquímicos. Com base nisto, este trabalho apresenta o desenvolvimento de um sensor eletroquímico obtido a partir da modificação do eletrodo compósito de grafite poliuretana com NiAlPO-5, um aluminofosfato de estrutura AFI modificado com níquel, e sua aplicação na determinação de Cu2+ em amostras de etanol combustível. Os aluminofosfatos foram sintetizados através do método hidrotérmico e caracterizados por difração de raios-X, microscopia eletrônica de varredura, ressonância magnética nuclear de 31P e espectroscopia de UV-Vis e de infravermelho. Os materiais obtidos foram, então, utilizados como modificadores na proporção de 10% em eletrodos GPU, a fim de realizar-se uma comparação entre os eletrodos sem modificação e modificados com AlPO-5 e NiAlPO-5 mediante a utilização da técnica de voltametria de redissolução anódica com varredura de onda quadrada e o método de adição padrão. Os resultados mostraram que a incorporação do Ni à estrutura do material promove uma melhora nas propriedades elétricas e analíticas do eletrodo. A resposta analítica do sensor na determinação do íon Cu2+, mostrou que o eletrodo NiAlPO-5 é mais sensível, em termos de corrente de pico, que o eletrodo baseado apenas em AlPO-5. A melhor resposta foi obtida com a razão Ni/Al de 0,5 no sensor NiAlPO-5. As condições experimentais, potencial e tempo de deposição, amplitude de pulso, potencial de escada, frequência e pH foram otimizadas em uma célula eletroquímica contendo 2 mL de etanol, 8 mL de HCl 0,1 mol L-1 e uma concentração de Cu2+ de 2,5×10-7 mol L-1. O sensor modificado com NiAlPO-5 foi então avaliado para determinação eletroanalítica de Cu2+ em amostras de etanol combustível apresentando resposta linear para Cu2+. Bons resultados foram obtidos para o limite de detecção (9,44×10-9 mol L-1), limite de quantificação (3,15 x10-8 mol L-1), recuperação (115%) e precisão (5,92%).
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Fernandes, Juliana Esteves. "Catalisadores Cu-, Co- ou Fe-ZSM-5 caracterização e avaliação na redução de NO a N2 com hidrocarbonetos na presença ou ausência de vapor de água." Universidade Federal de São Carlos, 2005. https://repositorio.ufscar.br/handle/ufscar/4146.

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Universidade Federal de Sao Carlos
The minimization of the emissions of nitrogen oxides (NOx) in the atmosphere has been one of the great goals in the area of environmental protection. Among the possible processes to treat the NOx, the selective catalytic reduction of NO with hydrocarbons (SCR-HC) has presented important expectations. For this process, the metal/ZSM-5 type catalysts have appropriate levels of conversion in oxidative conditions. In this context, the aim of this work was to prepare Cu, Co and FeZSM-5 catalysts. The samples were characterized by XRD, DRS-UVVIS, FTIR, H2-TPR, SEM and tested in the reduction of NO to N2 with propane or methane in oxidative atmosphere in the presence or absence of water steam. The H2-TPR data showed that the cationic species present in the prepared Cu, Co and FeZSM-5 catalysts, after thermal activation, were mainly Cu2+ (Cuα 2+ e Cuβ 2+), Co2+ and Fe3+ cations located in charge compensation sites in the zeolite, respectively. From FTIR and DRS-UVVIS it was also possible identify oxide species, which were present in a lower content. In the reduction of NO to N2 in the absence of water steam, the CuZSM-5 catalysts showed higher levels of conversion of NO than those based in Co and Fe. However, the FeZSM-5 catalysts showed, in this condition, activity at lower temperatures. This behavior makes them potentially interesting to be applied for practical purposes. On the other hand, in the presence of water steam, it was verified a higher loss of activity of the CuZSM-5 catalyst, which was totally restored removing the water in the feed. For the Co and FeZSM-5 catalysts, the activity loss in the presence of water steam was partially recovered during time on stream.
A minimização das emissões de óxidos de nitrogênio (NOx) na atmosfera tem sido um dos grandes desafios da área de proteção ambiental. Dentre os processos para o tratamento dos NOx possíveis, a redução catalítica seletiva do NO com hidrocarbonetos (RCS-HC) vem apresentando excelentes perspectivas. Para este processo os catalisadores metal/zeólita ZSM-5 possuem adequados níveis de conversão em condições oxidantes. Dentro deste contexto, este trabalho teve como objetivo preparar catalisadores Cu, Co e FeZSM-5. As amostras foram caracterizadas por DRX, DRS-UVVIS, FTIR, RTP-H2, MEV e sua atividade verificada através da redução de NO a N2 com propano ou metano em atmosfera oxidante, na presença ou ausência de vapor de água. Os resultados de RTP-H2 mostraram que as espécies presentes nos catalisadores Cu, Co e FeZSM-5, após ativação térmica, foram principalmente os cátions Cu2+ (Cuα 2+ e Cuβ 2+), Co2+ e Fe3+ compensando carga na zeólita, respectivamente. A partir de FTIR e DRS-UVVIS foi possível, também, identificar espécies oxidas, as quais estavam presentes em teores menores. Na redução de NO a N2 na ausência de vapor de água os catalisadores CuZSM-5 apresentaram maiores conversões de NO que os contendo Fe ou Co. Entretanto, os catalisadores FeZSM-5 apresentaram, nessa condição, atividade em temperaturas menores, o que mostra uma vantagem para o seu uso prático. Na presença de vapor de água, verificou-se uma maior queda da atividade no catalisador CuZSM-5, somente recuperada com a retirada desse composto na alimentação, sendo que para os catalisadores CoZSM-5 e FeZSM-5 a perda de atividade foi parcialmente recuperada ao longo do tempo.
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Lucena, Flávia Raquel Santos. "Avaliação da toxicidade, atividade antitumoral de 5-fluorouracil incorporado a redes de coordenação multifuncionais." Universidade Federal de Pernambuco, 2013. https://repositorio.ufpe.br/handle/123456789/13373.

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Relatos na literatura vêm utilizando nanoparticulas com o objetivo de carrear drogas e diminuir seus efeitos colaterais. Dentro dessa perspectiva estão às redes coordenadas a metais orgânicos ou MOFs. Este trabalho teve como objetivo realizar a incorporação de um fármaco antitumoral em uma rede de coordenação, visando melhorar sua biodisponibilidade para o organismo, bem como avaliar a toxicidade deste sistema in vitro e in vivo. Para isso foi realizado estudo teórico-computacional que nos permitiu a escolher o melhor fármaco a ser utilizado (5-fluorouracil) e a melhor rede de coordenação (Cu-BTC MOF), levando em consideração os tamanhos das moléculas dos mesmos em relação ao tamanho dos poros das MOFs Cu-BTC e MIL-53(Al). Os resultados das caracterizações químicas realizadas (UV-VIS, IV, CNHS, DRX, TGA/DTG e DSC) indicaram uma incorporação de 0,82 g de 5-fluorouracil para cada 1 g de MOF Cu-BTC após sete dias de agitação. A cultura celular in vitro demonstrou que o sistema 5-FU + Cu-BTC MOF apresentou atividade citotóxica significante quando comparado ao fármaco em solução. O teste de verificação do mecanismo de morte celular utilizando a citometria de fluxo indicou ser a apoptose o mecanismo de ação responsável para eliminação das células tumorais. O estudo de dissolução indicou uma liberação lenta e controlada de 39% do fármaco nos primeiros 30 minutos seguida da liberação de 82% do fármaco em 48 horas. Alterações histológicas só foram evidenciadas quando utilizada a dose de 750mg/kg sendo esta, a dose letal (DL50) encontrada. O teste da peritonite, verificação dos níveis de citocinas pro-inflamatórias e produção de óxido demonstraram que o sistema 5-FU + Cu-BTC MOF reduziu o número de leucócitos, os níveis de citocinas pró-inflamatórias e óxido nítrico, indicando que o sistema apresentou também atividade antiinflamatória para os testes realizados. Os resultados indicaram ser o sistema 5-FU+Cu-BTC MOF um excelente carreador de fármaco, com indicação de atividade anti-inflamatória, excelente atividade citotóxica via mecanismo de apoptose e liberação lenta e gradual do fármaco, o que possibilitou a diminuição na toxicidade do mesmo acompanhado de uma significante melhora terapêutica.
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Campbell, Erin, and Hanna Fares. "Roles of CUP-5, the Caenorhabditis elegans orthologue of human TRPML1, in lysosome and gut granule biogenesis." BioMed Central, 2010. http://hdl.handle.net/10150/610355.

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BACKGROUND:CUP-5 is a Transient Receptor Potential protein in C. elegans that is the orthologue of mammalian TRPML1. Loss of TRPML1 results in the lysosomal storage disorder Mucolipidosis type IV. Loss of CUP-5 results in embryonic lethality and the accumulation of enlarged yolk granules in developing intestinal cells. The embryonic lethality of cup-5 mutants is rescued by mutations in mrp-4, which is required for gut granule differentiation. Gut granules are intestine-specific lysosome-related organelles that accumulate birefringent material. This link between CUP-5 and gut granules led us to determine the roles of CUP-5 in lysosome and gut granule biogenesis in developing intestinal cells.RESULTS:We show that CUP-5 protein localizes to lysosomes, but not to gut granules, in developing intestinal cells. Loss of CUP-5 results in defects in endo-lysosomal transport in developing intestinal cells of C. elegans embryos. This ultimately leads to the appearance of enlarged terminal vacuoles that show defective lysosomal degradation and that have lysosomal and endosomal markers. In contrast, gut granule biogenesis is normal in the absence of CUP-5. Furthermore, loss of CUP-5 does not result in inappropriate fusion or mixing of content between lysosomes and gut granules.CONCLUSIONS:Using an in vivo model of MLIV, we show that there is a defect in lysosomal transport/biogenesis that is earlier than the presumed function of TRPML1 in terminal lysosomes. Our results indicate that CUP-5 is required for the biogenesis of lysosomes but not of gut granules. Thus, cellular phenotypes in Mucolipidosis type IV are likely not due to defects in lysosome-related organelle biogenesis, but due to progressive defects in lysosomal transport that lead to severe lysosomal dysfunction.
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Zheng, Quanxing. "Conversion of 2,3-butanediol over bifunctional catalysts." Diss., Kansas State University, 2016. http://hdl.handle.net/2097/34461.

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Doctor of Philosophy
Department of Chemical Engineering
Keith L. Hohn
In this study, Cu/ZSM-5 catalysts were used to catalyze the hydrodeoxygenation of 2,3-butanediol to butenes in a single reactor in the presence of hydrogen. The carbon selectivity of butenes increased with increasing SiO₂/Al₂O₃ ratio (lowering acidity of zeolite) and H₂/2,3-butanediol ratio. Cu/ZSM-5 with a SiO₂/Al₂O₃ ratio of 280 showed the best activity toward the production of butenes. On zeolite ZSM-5(280), the carbon selectivity of butenes increased with increasing copper loading and 19.2wt% of CuO showed the highest selectivity of butenes (maximum 71%). The optimal reaction temperature is around 250 °C. Experiments demonstrated that methyl ethyl ketone (MEK) and 2-methylpropanal are the intermediates in the conversion of 2,3-butanediol to butenes. The optimal performance toward the production of butene is the result of a balance between copper and acid catalytic functions. Due to the functionalized nature of 2,3-butanediol, a variety of reactions can occur during the conversion of 2,3-butanediol, especially when multiple catalyst functionalities are present. To investigate the role of the metal (Cu) and acid sites in the process of reaction, the reaction kinetics for all major intermediate products (acetoin, MEK, 2-methylpropanal, 2-butanol and 2-methyl-1-propanol) were measured over Cu/ZSM-5(280), HZSM-5(280), and Cu/SiO₂ at 250 °C. The results showed that Cu is the active site for hydrogenation reactions, while the acidic sites on the zeolite are active for dehydration reactions. In addition, dehydration of alcohols over the zeolite is much faster than hydrogenation of ketone (MEK) and aldehyde (2-methylpropanal). A kinetic model employing Langmuir-Hinshelwood kinetics was constructed in order to predict 2,3-butanediol chemistry over Cu/ZSM-5(280). The goal of this model was to predict the trends for all species involved in the reactions. Reactions were assumed to occur on two sites (acid and metal sites) with competitive adsorption between all species on those sites. Two different types of mesoporous materials (Al-MCM-48, Al-SBA-15) and hierarchical zeolite (meso-ZSM-5) were loaded with ~20wt% CuO and investigated in the conversion of 2,3-butanediol to butenes. The results showed that the existence of mesopores on the catalysts (Al-MCM-48 and Al-SBA-15 types) could decrease the selectivities of products from cracking reactions, especially C₃= and C₅=−C₇= by comparison with the catalyst with ~20wt% CuO loaded on the regular HZSM-5(280); meanwhile, the selectivity of C₈= from oligomerization of butenes was found to increase with increasing pore size of the catalysts. With respect to Cu/meso-ZSM-5(280) catalyst, it can be seen that the catalyst performs in a similar way to both Cu/ZSM-5(280) catalyst and mesoporous copper catalysts (Cu/Al-MCM-48 and Cu/Al-SBA-15) since both micropores (diameter of ~0.55 nm) and mesopores (pore size of ~23 nm) exist on meso-ZSM-5(280). The results from Cu catalysts were compared with four other metal catalysts (Ni, Pd, Rh and Pt). It was found that Cu is not very active for hydrogenation of butenes, but is active for hydrogenation of carbonyl groups (C=O) to form hydroxyl groups (−OH). Pd, on the other hand, is active in further hydrogenating butenes and other unsaturated hydrocarbons. Both Ni and Rh catalysts are good for hydrogenation of olefins and cracking of heavy hydrocarbons; however, Rh is not as good as Ni for the hydrogenation of the carbonyl group (C=O) of MEK. In addition, Pt favors the formation of heavy aromatics such as 5-ethyl-1,2,3,4-tetrahydro-naphthalene, while Pd is active for the production of xylene.
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Huynh, Julie. "ESCRT-Dependent Cell Death in a Caenorhabditis elegans Model of the Lysosomal Storage Disorder Mucolipidosis Type IV." Thesis, The University of Arizona, 2015. http://hdl.handle.net/10150/595811.

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Mutations in MCOLN1, which encodes the cation channel protein TRPML1, result in the neurodegenerative lysosomal storage disorder Mucolipidosis type IV. Mucolipidosis type IV patients show lysosomal dysfunction in many tissues and neuronal cell death. The orthologue of TRPML1 in Caenorhabditis elegans is CUP-5; loss of CUP-5 results in lysosomal dysfunction in many tissues and death of developing intestinal cells that results in embryonic lethality. We previously showed that a null mutation in the ATP-Binding Cassette transporter MRP-4 rescues the lysosomal defect and embryonic lethality of cup-5(null) worms. Here we show that reducing levels of the Endosomal Sorting Complex Required for Transport (ESCRT)-associated proteins DID-2, PHI-33, and ALX-1/EGO-2, which mediate the final de-ubiquitination step of integral membrane proteins being sequestered into late endosomes, also almost fully suppress cup-5(null) mutant lysosomal defects and embryonic lethality. Indeed, we show that MRP-4 protein is hypo-ubiquitinated in the absence of CUP-5 and that reducing levels of ESCRT-associated proteins suppresses this hypo-ubiquitination. Thus, increased ESCRT-associated de-ubiquitinating activity mediates the lysosomal defects and corresponding cell death phenotypes in the absence of CUP-5.
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Bisacchi, Lorenzo. "Elettroriduzione selettiva del 5-idrossimetilfurfurale: studio dei parametri di reazione." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19231/.

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I processi di riduzione del 5-idrossimetilfurfurale (HMF) sono generalmente condotti mediante processi che utilizzano calore e alte pressioni di H2. Una via alternativa prevede l’applicazione di processi elettrochimici, i quali richiedono condizioni più blande e non necessitano di H2. Il lavoro di tesi qui presentato si concentra sullo studio della elettoriduzione del 5-idrossimetilfurfurale a 2,5-bis(idrossimetil)furano, tramite l’utilizzo di catalizzatori basati su schiume 3D a cella aperta di Cu, sopra le quali viene depositato Ag tramite elettrodeposizione. La caratterizzazione elettrochimica è stata condotta tramite voltammetrie a scansione lineare fatte in tampone borato 0,5M e in HMF, seguite da cronoamperometrie (CA) e cronopotenziometrie (CP); inoltre sono stati valutati l’effetto dei parametri di reazione, quali concentrazione iniziale di reagente, potenziale applicato e densità di corrente applicata sulla conversione, selettività ed efficienza faradica. Le prove effettuate a due diverse concentrazioni di HMF (0,02M e 0,05M), con potenziale di -1,3V vs SCE, mostrano che all’aumentare della concentrazione di reagente si ha un calo della selettività in BHMF. Mantenendo la concentrazione a 0,05M e variando il potenziale applicato, si è osservato un aumento importante della selettività in BHMF a potenziali meno catodici e un calo della conversione a potenziali più catodici; la prova a -1,25V vs SCE fornisce i migliori risultati, tuttavia il tempo di reazione a questo potenziale è molto elevato, portando ad un netto calo della produttività. All’aumentare della densità di corrente si osserva un aumento della selettività in BHMF e una riduzione della conversione, mentre la FE è stabile.
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Books on the topic "5-CuO"

1

Final Cut Pro 5. Berkeley, CA: Peachpit Press, 2006.

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Wolsky, Tom. Final Cut Pro 5 Editing Essentials. Burlington: Elsevier, 2005.

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Advanced editing techniques in Final Cut Pro 5. Berkeley, Calif: Peachpit, 2005.

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Final Cut Pro 5 for Mac OS X. Berkeley, CA: Peachpit Press, 2006.

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Inc, ebrary, ed. Save big: Cut your top 5 costs and save thousands. Hoboken, N.J: Wiley, 2010.

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Final Cut Pro 5: Includes exercise files and demo movies. Berkeley, Calif: Lynda.com, 2006.

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Platt, W. H. W. North West of Ireland Senior Cricket cup finals, 1888 - 199 5. Coleraine): W.H.W Platt (56 Ballycairn Road, Coleraine, BT51 3HX, 1996.

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Zhengzhou ren min guang bo dian tai. Shi kong sheng yin: Huo jiang zuo pin 5 nian jing pin ji cui. Beijing: Zhongguo guang bo dian shi chu ban she, 2011.

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Central Unitaria de Trabajadores (Colombia). Congreso Nacional. Documentos de discusión: II Congreso CUT : Bogotá, diciembre 4, 5, 6, 7 y 8 de 1989. [Bogotá, Colombia?]: CUT, 1989.

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Clauser, Marina, Andrea Grigioni, and Mario Landi, eds. Peperoncini. Florence: Firenze University Press, 2010. http://dx.doi.org/10.36253/978-88-8453-951-9.

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The chili pepper is a spice and medicinal remedy used since ancient times by the American peoples who were the first to undertake the domestication of 5 species belonging to the genus Capsicum (Solanaceae): Capsicum (Solanaceae): Capsicum annuum, C. baccatum, C. chinense, C. frutescens e C. pubescens. After the sixteenth century the chili pepper became similarly popular in other continents and today the five species number many reference pod-types and over 3,000 varieties. The book describes their uses in the different spheres of cuisine (aromatic, spicy and colourful), medicine (antioxidant and digestive for internal use, rubefacient and anti-rheumatic for external use) and ornamentation (cut branches, floral compositions, border plants, splashes of colour).
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Book chapters on the topic "5-CuO"

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Haddad, Meriem, Akila Belhadi, and Mohamed Trari. "Photocatalytic Hydrogen Production on 5% CuO/ZnO Hetero-Junction." In Springer Proceedings in Energy, 429–34. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6595-3_55.

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Shigeno, Koichi, Hidenori Katsumura, Hiroshi Kagata, Hiroshi Asano, and Osamu Inoue. "Low Temperature Sintering of Alumina by CuO-TiO2-Nb2O5 Additives." In Electroceramics in Japan IX, 181–84. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-411-1.181.

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Cho, In Sun, Sang Gu Kang, Dong Wan Kim, and Kug Sun Hong. "Effects of CuO and V2O5 Addition on Sintering Behavior and Microwave Dielectric Properties of (1-x)Ca2P2O7-xTiO2." In Key Engineering Materials, 279–82. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-410-3.279.

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Wang, Jin, Zhen Xing Yue, Ying Chun Zhang, Zhi Lun Gui, and Long Tu Li. "Effects of CuO-V2O5-Bi2O3 Additions on the Microstructure and Microwave Dielectric Properties of 0.42ZnNb2O6-0.58TiO2 Ceramics." In High-Performance Ceramics III, 27–30. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-959-8.27.

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Kawarabayashi, Ken-ichi, and Bingkai Lin. "A nearly 5/3-approximation FPT Algorithm for Min-k-Cut." In Proceedings of the Fourteenth Annual ACM-SIAM Symposium on Discrete Algorithms, 990–99. Philadelphia, PA: Society for Industrial and Applied Mathematics, 2020. http://dx.doi.org/10.1137/1.9781611975994.59.

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Kim, Dong-Won, M. A. Suhaimi, Byung-Mun Kim, Min-Ho Cho, and F. Frank Chen. "Rough Cut Machining for Impellers with 3-Axis and 5-Axis NC Machines." In Advances in Sustainable and Competitive Manufacturing Systems, 609–16. Heidelberg: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00557-7_50.

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Gupta, A. "458 Spectroscopic data of the porphyrin C 48 H 35 CuN 5 O 7." In Porphyrins, 691. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41561-6_460.

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Hermiz, Ghazala Y., and Ebtisam Kh AL-Beyaty. "Electrical Properties of Hg0.8 Tl0.2 Ba2 Can-1 Cun O2n+2δ for (n=1-5) HTSC System." In Ceramic Transactions Series, 129–36. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118144480.ch14.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of homo-bimetallic copper(II), Cu2, complex with 1, 3, 5-tris(pyrazol-1-ylmethyl)benzene." In Magnetic Properties of Paramagnetic Compounds, 689–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-53974-3_351.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of homo trimetallic copper(II), Cu3, complex with 1, 3, 5-tris(pyrazol-1-ylmethyl)benzene." In Magnetic Properties of Paramagnetic Compounds, 691–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-53974-3_352.

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Conference papers on the topic "5-CuO"

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Xiang, Q., N. Li, Z. Cheng, X. Wang, and J. Xu. "P1NM.5 - Excellent Formic Acid Sensors Based on CuO Loaded SnO2/Zn2SnO4 Hollow Nano-cubes." In 17th International Meeting on Chemical Sensors - IMCS 2018. AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany, 2018. http://dx.doi.org/10.5162/imcs2018/p1nm.5.

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Mahdavi, Mahboobe, and Amir Faghri. "Transient Performance of Heat Pipes Using Nanofluids." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23463.

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Abstract In the present works, a comprehensive transient numerical model was developed to evaluate the effect of nanofluid on the transient performance of heat pipes. The numerical model solves for compressible vapor flow, the liquid flow in the wick region, and the energy equations in the vapor, wick and wall. The distinctive feature of the model is that it can uniquely determine the heat pipe operating pressure based on the physical and operating conditions of the system. Three nanoparticle types were considered: Al2O3, CuO, and TiO2. The effects of the concentration of nanoparticles (5%, 10%, 20% and 40%) were investigated on the heat pipe response time, thermal resistance, and pressure drop under various operating conditions. The results showed that the use of nanofluid decreased the response time of the heat pipe by the maximum of 27%. It was also discovered that the thermal resistance decreased significantly with an increase in the volume concentration. A maximum reduction of 84%, 82% and 78% in thermal resistance was obtained for Al2O3, CuO, and TiO2, respectively. In addition, the effect of nanoparticles on the liquid pressure drop highly depends on the nanoparticle type and volume concentration.
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Nabil, Mahdi, and J. M. Khodadadi. "Experimental Determination of Temperature-Dependent Thermal Conductivity of Solid Eicosane-Based Nanostructure-Enhanced Phase Change Materials." In ASME 2012 Heat Transfer Summer Conference collocated with the ASME 2012 Fluids Engineering Division Summer Meeting and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ht2012-58504.

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The effective thermal conductivity of composites of eicosane and copper oxide nanoparticles in the solid state was measured experimentally by using the transient plane source technique. Utilizing a controllable temperature bath, measurements were conducted at various temperatures between 10 and 35°C for the solid samples. In the course of preparation of the solid specimen, liquid samples (0, 1, 2, 5 and 10 wt%) were poured into small diameter molds and were degased within a vacuum oven. The molds were then subjected to either ambient solidification or ice-water bath freezing method. Measured thermal conductivity data of the composites were found to be nearly independent of the measurement temperature for a given loading of CuO nanoparticles regardless of the solidification procedure. Irrespective of the solidification method, as the melting temperature was approached, thermal conductivity data of the solid disks rose sharply for both sets of experiments. The composites prepared using the ice-water bath solidification scheme consistently exhibited lower values of thermal conductivity when compared to the samples which prepared under ambient solidification method. This behavior might be due to the greater void percentage of ice-water bath samples and/or crystal structure deviations due to phase transition method.
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Bomfim, Carlos Henrique Morais, and Walmir Matos Caminhas. "Identifica��o de uma Unidade de Destila��o Atmosf�rica e a V�cuo da Refinaria Gabriel Passos/Petrobr�s Utilizando Redes Neurais e L�gica Nebulosa." In 5. Congresso Brasileiro de Redes Neurais. CNRN, 2016. http://dx.doi.org/10.21528/cbrn2001-054.

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Khankhasaeva, Sesegma Ts. "PREPARATION AND USE OF NANOCOMPOSITE MATERIAL «Fe2O3 ∙ CuO ∙ Al2O3 ∙ SiO2» IN CATALYSIS." In Innovative technologies in science and education. Buryat State University Publishing Department, 2015. http://dx.doi.org/10.18101/978-5-9793-0803-6-36-38.

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Mikkola, Satu. "Cu2+ dependent and spontaneous cleavage of mRNA 5'-cap structure." In XIVth Symposium on Chemistry of Nucleic Acid Components. Prague: Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, 2008. http://dx.doi.org/10.1135/css200810410.

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DMITRIEV, V. M., A. M. GUREVICH, V. N. EROPKIN, L. A. ISHCHENKO, N. N. PRENTSLAU, A. S. ERMOLENKO, and A. G. KUCHIN. "HEAT CAPACITY AND SURFACE RESISTANCE OF YNI(5−X)CuX." In Proceedings of the First Regional Conference. World Scientific Publishing Company, 2000. http://dx.doi.org/10.1142/9789812793676_0125.

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Simakov, Andrey V., Evgenii S. Stoyanov, Evgenii V. Rebrov, and N. N. Sazonova. "FTIR study of acetone oxime interaction with H-ZSM-5 and Cu-ZSM-5." In Optical Science and Technology, the SPIE 49th Annual Meeting, edited by Martin W. McCall and Graeme Dewar. SPIE, 2004. http://dx.doi.org/10.1117/12.560320.

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Aoki, Y., S. Yatsu, S. Oikawa, H. Kitagawa, M. Yagi, N. Kayukawa, B. Tuchida, et al. "Experiments on a SiC-CuG1-Cu insulator and a construction of 5 MWt long duration MHD channel." In 1990 Plasma Science IEEE Conference Record - Abstracts. IEEE, 1990. http://dx.doi.org/10.1109/plasma.1990.110875.

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KARWAN-BACZEWSKA, Joanna, and Aleksandra FRANCZAK. "PROCESSING AND PROPERTIES OF Cu-5 WT% TiN COMPOSITES." In METAL 2019. TANGER Ltd., 2019. http://dx.doi.org/10.37904/metal.2019.958.

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Reports on the topic "5-CuO"

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Moshopoulou, E., J. D. Thompson, J. L. Sarrao, and Z. Fisk. Electron diffraction study of La{sub 2}Li{sub O.5}Cu{sub O.5}O{sub 4}. Office of Scientific and Technical Information (OSTI), March 1998. http://dx.doi.org/10.2172/658351.

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Krushnisky, A., P. Mercier-Langevin, P. S. Ross, V. McNicoll, J. Goutier, L. Moore, C. Pilote, and C. Bernier. Au-Ag-Cu-Zn-bearing mineralized zones at the Horne 5 Deposit, Rouyn-Noranda, Quebec - new observations and preliminary results. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2017. http://dx.doi.org/10.4095/300665.

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Barreix, Alberto, and Fernando Velayos. Incentivos tributarios, compromisos internacionales y suficiencia recaudatoria: Otra trilogía imposible. Inter-American Development Bank, April 2021. http://dx.doi.org/10.18235/0003231.

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Abstract:
Los países de América Latina y el Caribe (ALC) utilizan la reducción de la tasa de impuesto a la renta empresarial (IRE) para promover la inversión y, a su vez, este incentivo debe cumplir con la condición de no discriminar entre operaciones de exportación y aquellas destinadas a todo el mercado local, según los compromisos contraídos con la de la Organización Mundial del Comercio (OMC) y el proyecto de Erosión de la Base Imponible y Traslado de Beneficios (BEPS, por sus siglas en inglés). Así se posibilita un importante arbitraje tributario cuando las empresas con incentivos en la tasa de renta empresarial venden con sobreprecios a firmas sujetas a tasa normal en el mercado local, trasvasando rentas a las firmas beneficiadas desde las del régimen general. Esto tiene impactos negativos significativos y crecientes en términos de recaudación y equidad entre firmas bonificadas y las del régimen general en el mismo ramo, especialmente en los servicios cuyo crecimiento es notorio (como los digitales o de telecomunicación). Para morigerar este arbitraje será necesario aplicar algunas opciones prácticas, como las que se presentan más adelante, que hagan viable la bonificación tributaria en la tasa del impuesto como herramienta de políticas, sean compatibles con dichos acuerdos internacionales y reduzcan las pérdidas de recaudación. Adicionalmente, se incluyen cuadros con el resumen de los principales regímenes de incentivos tributarios y de la revisión por los pares de los posibles regímenes fiscales perniciosos en América Latina (Acción 5 de BEPS).
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Bleeker, W., and M. G. Houlé. Targeted Geoscience Initiative 5: Advances in the understanding of Canadian Ni-Cu-PGE and Cr ore systems - Examples from the Midcontinent Rift, the Circum-Superior Belt, the Archean Superior Province, and Cordilleran Alaskan-type intrusions. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2020. http://dx.doi.org/10.4095/326702.

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Core descriptions and assay results from the Cominco DDH-1 through DDH-5 boreholes, NAP Cu-Zn Prospect and Humble Oil H-02 through H-17 boreholes, Kemuk Mountain Prospect, Dillingham Quadrangle, Alaska. Alaska Division of Geological & Geophysical Surveys, January 2011. http://dx.doi.org/10.14509/22926.

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