Academic literature on the topic 'Atom sizes'

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Journal articles on the topic "Atom sizes"

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Sachdev, A., and R. I. Masel. "Embedded atom calculations of the equilibrium shapes of 5–60 atom palladium nanocrystals." Journal of Materials Research 8, no. 3 (1993): 455–61. http://dx.doi.org/10.1557/jmr.1993.0455.

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The embedded atom method (EAM) has been used to compare the stability of a series of small palladium clusters with 5–60 atoms and a variety of shapes. It is found that the 13- and 55-atom icosahedra and cubo-octahedra are stable at 0 K. However, other sized icosahedra and cubo-octahedra are unstable at 0 K. Upon annealing, the icosahedra and cubo-octahedra reconstruct into nonpolyhedral structures which are highly strained. The strained structures are much more stable than the icosahedron or cubo-octahedron except when there are 13 or 55 atoms in the cluster. Further, there are many disordered
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Rattanamongkhonkun, Kanya, Radom Pongvuthithum, and Chulin Likasiri. "Rearrangement of Single Atoms by Solving Assignment Problems via Convolutional Neural Network." Applied Sciences 14, no. 17 (2024): 7877. http://dx.doi.org/10.3390/app14177877.

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This paper aims to present an approach to address the atom rearrangement problem by developing Convolutional Neural Network (CNN) models. These models predict the coordinates for atom movements while ensuring collision-free transitions and filling all vacancies in the target array. The process begins with designing a cost function for the assignment problem that incorporates constraints to prevent collisions and guarantee vacancy filling. We then build and train CNN models using datasets for three different grid sizes: 10×10, 13×13, and 21×21. Our models achieve high accuracy in predicting ato
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O'Keefe, Michael, and N. E. Brese. "Atom sizes and bond lengths in molecules and crystals." Journal of the American Chemical Society 113, no. 9 (1991): 3226–29. http://dx.doi.org/10.1021/ja00009a002.

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Hossain, M. J., M. R. I. Faruque, M. T. Islam, and S. S. Islam. "An effective medium ratio obeying meta-atom for multiband applications." Bulletin of the Polish Academy of Sciences Technical Sciences 65, no. 2 (2017): 139–47. http://dx.doi.org/10.1515/bpasts-2017-0017.

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Abstract In this paper, an effective medium ratio obeying, negative refractive index, compact meta-atom was designed, manufactured and tested for operation in a multiband microwave regime. The proposed meta-atom structure obeyed better effective medium ratio. The results of the measurement were verified by the commercially available Computer Simulation Technology (CST) Studio Suite 2014 simulator. The effective medium ratio obeying meta-atom displayed multiband response, in conjunction with negative refractive index property over a certain frequency band in the microwave frequency span. Furthe
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Zhang, Haijun, Keisuke Kawashima, Mitsutaka Okumura, and Naoki Toshima. "Colloidal Au single-atom catalysts embedded on Pd nanoclusters." J. Mater. Chem. A 2, no. 33 (2014): 13498–508. http://dx.doi.org/10.1039/c4ta01696c.

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Martin, Thomas E., Robert W. Mitchell, Edward D. Boyes, and Pratibha L. Gai. "Atom-by-atom analysis of sintering dynamics and stability of Pt nanoparticle catalysts in chemical reactions." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2186 (2020): 20190597. http://dx.doi.org/10.1098/rsta.2019.0597.

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Supported Pt nanoparticles are used extensively in chemical processes, including for fuel cells, fuels, pollution control and hydrogenation reactions. Atomic-level deactivation mechanisms play a critical role in the loss of performance. In this original research paper, we introduce real-time in-situ visualization and quantitative analysis of dynamic atom-by-atom sintering and stability of model Pt nanoparticles on a carbon support, under controlled chemical reaction conditions of temperature and continuously flowing gas. We use a novel environmental scanning transmission electron microscope wi
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Watanabe, Shunta, Yoko Tomita, Kohei Kawabata, and Takashi Nakayama. "Clustering feature of metal atoms in pentacene molecular solids: a first-principles study." Japanese Journal of Applied Physics 61, no. 2 (2022): 021003. http://dx.doi.org/10.35848/1347-4065/ac41e2.

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Abstract Metal-atom contamination often induces the degradation of organic molecular devices. In this work, we studied the clustering feature of Au and Al impurity metal atoms in pentacene solids by first-principles calculations. We found that Au atoms prefer to produce clusters in a molecule-edge space due to the strong bonding among Au atoms, and such clusters can increase their sizes by producing molecule vacancies. On the other hand, the Al atom prefers to locate separately around the center of pentacene molecules due to the strong bonding between the Al atom and surrounding molecules, whi
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Banerjea, Amitava, Radhika Prosad Datta, Abhijit Mookerjee, and A. K. Bhattacharyya. "Determination of the Ground State Geometries of Copper Clusters by Simulated Annealing." International Journal of Modern Physics B 11, no. 19 (1997): 2333–41. http://dx.doi.org/10.1142/s0217979297001192.

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We determine the lowest energy structures of small (10–20 atoms) copper clusters. The semi-empirical Equivalent Crystal Theory (ECT) is used in conjunction with the Metropolis Monte Carlo algorithm to determine the equilibrium geometry of each cluster via simulated annealing. The optimum structures of the clusters in this size range are found to be derived from icosahedral structures. The 13-atom cluster is an icosahedron and the 19-atom one a double-icosahedron. The other sizes show structures related to these. The 10- and 11-atom clusters, however, show somewhat different structures. We repo
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Nakhaei Pour, Ali, Javad Karimi, Zahra Keyvanloo, and Mohamadreza Hashemian. "Size Dependence Adsorption of Hydrogen on Cobalt Clusters: A DFT Study." Journal of Nano Research 42 (July 2016): 100–111. http://dx.doi.org/10.4028/www.scientific.net/jnanor.42.100.

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Density functional theory was used to investigate the effect of size on the adsorption state of hydrogen atom on small cobalt particles. For this propose, we have performed series of DFT-GGA calculations on various sizes of Co clusters, between 4 and 24 atoms, and a Co FCC (100) slab, with and without hydrogen atom adsorbate. The results showed that the destabilization and the cohesive energies per atom in a metal cluster are represented as linear function of the surface-to-volume ratio of the metal clusters. In addition, the energy of the HOMO–LUMO gap from 4s and 3d valence orbitals of the c
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Zhang, Hongtao, Wen Wang, Jun Sun, Li Zhong, Longbing He, and Litao Sun. "Surface-Condition-Dependent Deformation Mechanisms in Lead Nanocrystals." Research 2022 (July 27, 2022): 1–7. http://dx.doi.org/10.34133/2022/9834636.

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Serving as nanoelectrodes or frame units, small-volume metals may critically affect the performance and reliability of nanodevices, especially with feature sizes down to the nanometer scale. Small-volume metals usually behave extraordinarily in comparison with their bulk counterparts, but the knowledge of how their sizes and surfaces give rise to their extraordinary properties is currently insufficient. In this study, we investigate the influence of surface conditions on mechanical behaviors in nanometer-sized Pb crystals by performing in situ mechanical deformation tests inside an aberration-
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Dissertations / Theses on the topic "Atom sizes"

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Adiguzel, O. "Phase Transition and Functional Characteristics of Shape Memory Alloys." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35059.

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Shape-memory alloys are a new class of functional materials with a peculiar property known as shape memory effect. These alloys have an ability to recover a particular shape. The origin of this phenomenon lies in the fact that the material changes its internal crystalline structure with changing temperature. Copper based ternary alloys exhibit shape memory effect in metastable - phase field. These alloys undergo two ordered transitions on cooling, and bcc structures turn into B2(CsCl) or DO3(Fe3Al) -type ordered structures. The ordered structures martensitically undergo the non-convention
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Robinson, David John Robert. "Transitions in medium sized atoms." Thesis, Queen's University Belfast, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359122.

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Aubailly, Simon. "From coarse-grained to atomistic molecular modeling : how structure and dynamics shape intra-molecular communication and functional sites in proteins." Thesis, Orléans, 2017. http://www.theses.fr/2017ORLE2002/document.

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Dans cette thèse, nous nous sommes intéressés à la relation subtile qui existe entre lesstructures complexes des protéines et leurs fonctions encore plus raffinées que ces dernièreseffectuent. Basés sur deux descriptions différentes des protéines, à l’échelle de acide-aminé età l’echelle atomique, un de nos objectifs était de connecter des indicateurs structuraux calculésà partir de la topologie des protéines à des sites fonctionnels tels que les sites catalyiquesdans les enzymes. Un autre pan de la recherche de cette thèse était d’utiliser nos outils baséssur la structure et de mettre au poin
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Silva, Talita Cristina da. "AtoM, normas e padrões para a descrição e representação de informações e objetos digitais em ambientes digitais Web /." Marília, 2017. http://hdl.handle.net/11449/151041.

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Orientador: Maria José Vicentini Jorente<br>Banca: Natália Bolfarini Tognoli<br>Banca: Rodrigo Eduardo Botelho Francisco<br>Resumo: Diante das transformações, das tecnologias e a mudança no comportamento dos internautas, os arquivos e profissionais da informação encontram-se com novos desafios, quanto à busca, a recuperação e o acesso à informação. Neste discutiu-se sobre os temas: descrição arquivística, normalização em arquivos, criação e implantação dos padrões e normas, com vistas à representação da informação; e o AtoM, como resultado destes esforços, que é um software de descrição Arquiv
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Alvinge, Björn. "Is Speed a Magnitude? : Neurocognitive Estimations of Speed and its’ Connection to Time, Space and Numeric/Quantity Estimations." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-156255.

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Associations between space, time, numbers and quantities have suggested that there must be a shared representational format which underlies them. One of the more prominent theories of an underlying system of representation is that of ATOM, which suggests that the there exists a generalized system of magnitude which processes these dimensions. However, there has been no study that examines whether speed is also processed within such a system. This study investigates this by seeing if a SNARC or Problem-Size effect arise in two speed estimation tests. The fundamental task for the participants in
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Košťák, Ondřej. "Kalibrace optických souřadnicových měřicích strojů GOM ATOS." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318719.

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This master’s thesis contains the basic division of 3D methods which are used for reconstruction of measured objects. Furthermore the types of structured light patterns used for 3D triangulation. It also contains a description of the construction and functions of GOM ATOS and TRITOP machines. Primarily the thesis deals with the calibration of these machines, the design of suitable materials standard of size and the internal calibration methodology used by ŠKODA AUTO a.s. The text also includes verification of the proposed calibration procedure in practice, proposal for determination of calibra
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Rintelman, Jamie Marie. "Quantum Chemistry, and Eclectic Mix From Silicon Carbide to Size Consistency." Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Science ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2004. http://www.osti.gov/servlets/purl/835379-0CKsBH/webviewable/.

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19 Dec 2004.<br>Published through the Information Bridge: DOE Scientific and Technical Information. "IS-T 1948" Jamie Marie Rintelman. 12/19/2004. Report is also available in paper and microfiche from NTIS.
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Malasi, Wilhelm S. "Synthesis and Complexation of Functionalized Mixed Thia-Aza-Macrocyclic and Medium Sized Ligands." University of Akron / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=akron1239210466.

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Long, Wei. "Designing immobilized catalysts for chemical transformations: new platforms to tune the accessibility of active sites." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/49017.

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Chemical catalysts are divided into two traditional categories: homogeneous and heterogeneous catalysts. Although homogeneous (molecular) catalysts tend to have high activity and selectivity, their wide application is hampered by the difficulties in catalyst separation. In contrast, the vast majority of industrial scale catalysts are heterogeneous catalysts based on solid materials. Immobilized catalysts, combining the advantages of homogeneous and heterogeneous catalysts, have developed into an important field in catalysis research. This dissertation presents synthesis, characterization and e
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Bookjans, Eva M. "Relative number squeezing in a Spin-1 Bose-Einstein condensate." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37148.

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The quantum properties of matter waves, in particular quantum correlations and entanglement are an important frontier in atom optics with applications in quantum metrology and quantum information. In this thesis, we report the first observation of sub-Poissonian fluctuations in the magnetization of a spinor 87Rb condensate. The fluctuations in the magnetization are reduced up to 10 dB below the classical shot noise limit. This relative number squeezing is indicative of the predicted pair-correlations in a spinor condensate and lay the foundation for future experiments involving spin-squeezing
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Books on the topic "Atom sizes"

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Iinkai, Ōasa-chō Kyōiku. Shiseki Kikkawa-shi jōkan ato: Hozon kanri keikaku sakutei hōkokusho. Ōasa-chō Kyōiku Iinkai, 1990.

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Laurens, Christiaan Rudolf. Sites and diffusion of probe atoms on surfaces: Measured after soft-landing ion deposition. [s.n.], 1997.

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Snyder, Aaron. The dependence of atomic oxygen undercutting of protected polyimide Kapton® H upon defect size. National Aeronautics and Space Administration, Glenn Research Center, 2001.

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K, De Groh Kim, and NASA Glenn Research Center, eds. The dependence of atomic oxygen undercutting of protected polyimide Kapton® H upon defect size. National Aeronautics and Space Administration, Glenn Research Center, 2001.

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Iinkai, Nagasaki-shi Kyōiku, ред. Kuni shitei shiseki Dejima Oranda Shōkan ato hanʼi kakunin chōsa hōkokusho. Nagasaki-shi Kyōiku Iinkai, 1986.

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Division, Australian Antarctic, International Council of Scientific Unions., and International Council of Scientific Unions. Scientific Committee on Antarctic Research., eds. Waste disposal in the antarctic: Report of the SCAR panel of experts on waste disposal in response to recommendation 4 of the XIII Antarctic Treaty Consultative Meeting 1985 (ATCM XIII-4). Australian Antarctic Division, on behalf of International Council of Scientific Unions, Scientific Committee on Antarctic Research, 1989.

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Iinkai, Matsudo-shi Kyōiku. Heisei 2-nendo Matsudo shinai iseki hakkutsu chōsa gaihō: Jingamae iseki, Ōyaguchi iseki, Nomayoke dote, Kōde kaizuka, Wakashiba iseki, Ōyaguchi Koganejō ato = The Breaf [i.e. Brief] reports of the excavations at the archeological sites in Matsudo City in 1990 : Zingamae site, Ohyaguti site, Nomayoke dote, Koude shell mound, Wakasiba site, Ohyaguti-Kogane-jyou. Matsudo-shi Kyōiku Iinkai, 1991.

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Levin, Frank S. The Nuclear Atom. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198808275.003.0006.

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Chapter 5 describes how the concept of quantization (discretization) was first applied to atoms. This was done in 1913 by Niels Bohr, using Ernest Rutherford’s paradigm-changing, solar-system model of atomic structure, wherein the positively charged nucleus occupies a tiny central space, much smaller than the known sizes of atoms. Bohr, postulating a quantized version of this model for hydrogen, was able to explain previously inexplicable experimental features of that atom. He did so via an ad hoc quantization procedure that discretized the single electron’s energy, its angular momentum, and t
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MUM. Tom the Atom, Book 2: Atoms Are Like Guys, with Big Eyes That Look at You in Surprise and Have Different Round Sizes. Independently Published, 2019.

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van Ruitenbeek, Jan M. Quasi-ballistic electron transport in atomic wires. Edited by A. V. Narlikar and Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533046.013.5.

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This article describes quasi-ballistic electron transport in atomic wires. It begins with a review of experiments on the conduction properties for single metal atoms. Nearly all the information on the properties of such nanocontacts should be extracted from the current and voltage only. Nevertheless, a wide range of techniques has been developed to obtain detailed information. The article proceeds by considering various experimental techniques for characterizing single-atom contacts, along with their application for the study of conducting chains of individual metal atoms and for metal–molecul
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Book chapters on the topic "Atom sizes"

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Stubbs, M. T., and R. Huber. "Locating heavy-atom sites." In International Tables for Crystallography. International Union of Crystallography, 2006. http://dx.doi.org/10.1107/97809553602060000680.

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Stubbs, M. T., and R. Huber. "Locating heavy-atom sites." In International Tables for Crystallography. International Union of Crystallography, 2012. http://dx.doi.org/10.1107/97809553602060000838.

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Haken, Hermann, and Hans Christoph Wolf. "The Mass and Size of the Atom." In Advanced Texts in Physics. Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-642-98099-2_2.

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Haken, Hermann, and Hans Christoph Wolf. "The Mass and Size of the Atom." In The Physics of Atoms and Quanta. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-97468-7_2.

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Haken, Hermann, and Hans Christoph Wolf. "The Mass and Size of the Atom." In The Physics of Atoms and Quanta. Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-97567-7_2.

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Haken, Hermann, and Hans Christoph Wolf. "The Mass and Size of the Atom." In The Physics of Atoms and Quanta. Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-97689-6_2.

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Haken, Hermann, and Hans Christoph Wolf. "The Mass and Size of the Atom." In Atomic and Quantum Physics. Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-97014-6_2.

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Margerum, Lawrence D., Kazuko I. Liao, and Joan Selverstone Valentine. "Oxygen Atom Transfer Reactions at Binuclear Copper Sites." In ACS Symposium Series. American Chemical Society, 1988. http://dx.doi.org/10.1021/bk-1988-0372.ch006.

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Landman, Uzi, R. N. Barnett, and W. D. Luedtke. "Nanowires: size evolution, reversibility, and one-atom contacts." In Small Particles and Inorganic Clusters. Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60854-4_67.

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Claudino-Sales, Vanda. "Brazilian Atlantic Islands: Fernando de Noronha and Atol das Rocas, Brazil." In Coastal World Heritage Sites. Springer Netherlands, 2018. http://dx.doi.org/10.1007/978-94-024-1528-5_32.

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Conference papers on the topic "Atom sizes"

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K, Venkata Muralidhar, Vinay Jain, and Beena Rai. "Thiourea Derivatives as Steel Corrosion Inhibitors: Density Functional Theory and Experimental Studies." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-13317.

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Abstract Thiourea and its derivatives have been studied for several decades, for their corrosion inhibition characteristics with steels. However, their interaction mechanisms with steel are not well understood. Such an understanding may be vital for design of novel thiourea derivatives as corrosion inhibitors for steels. We have carried out state of the art density functional theory (DFT) computations and experiments (weightloss, polarization and electrochemical impedance) to understand the effect of thioureas on corrosion of steel. The interactions of thiourea and dibutyl thiourea separately
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Dinuț, Ionuț-Cosmin, Bogdan Alexandrescu, and Rodica-Claudia Constantinescu. "Methods and algorithms for analyzing network node measurements to predict load and correctly size nodes." In 2024 Advanced Topics on Measurement and Simulation (ATOMS). IEEE, 2024. https://doi.org/10.1109/atoms60779.2024.10921516.

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Al-Hattab, Amro, Diaa Elsanosy, Gaurav Tomer, and Abdullah Al-Jarbou. "Role of Non-Metallic Inclusions and the Microstructure Constituents on HIC Performance." In MPWT 2019. NACE International, 2019. https://doi.org/10.5006/mpwt19-14439.

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Abstract With increasing oil &amp; gas demand and depletion of sweet reserves, oil &amp; gas companies in the regional economies are focusing towards the exploitation of sour resources. This necessitates the use of pipelines and down-hole tubing made from special steels with significant resistance to hydrogen-induced cracking (HIC). These steels are produced through specific technologies for enhanced chemical composition control and microstructural engineering to incorporate the required strength, weld ability and improved HIC resistance. It is well established that the HIC initiates at sites
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Hay, M. G., and D. W. Rider. "Integrity Management of a HIC-Damaged Pipeline and Refinery Pressure Vessel through Hydrogen Permeation Measurements." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98395.

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Abstract Hydrogen permeation measurements were used in the successful operation of a sour gas pipeline subsequent to a hydrogen-induced cracking (HIC) failure in September 1992. Two joints of HIC-resistant pipe were used to repair the failed section and adjacent cut-outs. The pipeline has been operated for five years with no further instances of HIC failure. Hydrogen permeation monitoring was chosen as an integrity management tool because no techniques are currently available to inspect for HIC damage in a pipeline this size. Self-powered electrochemical devices installed on the pipeline were
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Das, Nishith Kumar, and Tetsuo Shoji. "A Fundamental Study of an Fe-Cr(111) Binary Alloy-Metal Oxide(110)-Water Interfaces." In CORROSION 2011. NACE International, 2011. https://doi.org/10.5006/c2011-11289.

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Abstract Tight-binding quantum chemical molecular dynamics (QCMD) method was used to study Fe- Cr/Cr2O3/H2O interfaces in a boiling water reactor (BWR) environment. The system under study comprises an Fe-Cr (111) binary alloy covered with a Cr2O3 (110) surface and four water molecules. Reaction at the metal and oxygen-terminating metal oxide interface causes diffusion of oxygen ions into the metal surface and segregation of the metal ions. Concurrently, the interaction at the metal oxide- water interface causes the dissociation of water molecules. As a result, dissociated hydrogen atoms diffus
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Chen, Min. "Characteristics of Helium Diffusion Trajectory: A Molecular Dynamics Study." In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-16466.

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Molecular dynamics (MD) are employed to explore the features of Helium atom and He clusters diffusion in titanium at the temperatures between room temperature and 667k. The results demonstrate that the frequency for Helium atom jumping from site to site increases with the increasing temperature. Another important feature is that the diffusion of a He atom and a He trimer is a layered structure. The difference is that the trajectory of a He atom is between two Ti atom layers of (001) planes, and the trajectory of a He trimer is overlapped with the Ti atom layers of (001) plane. Meanwhile, it is
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Bonfim, Michel, Fred Freitas, and Stênio Fernandes. "A Solution for Goal-oriented Policy Refinement in NFV Management and Orchestration Systems." In Anais Estendidos do Simpósio Brasileiro de Redes de Computadores e Sistemas Distribuídos. Sociedade Brasileira de Computação - SBC, 2021. http://dx.doi.org/10.5753/sbrc_estendido.2021.17156.

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In this thesis, we propose an automated policy refinement procedure for NFV-MANO systems based on planning and description logic reasoning. It is implemented in ATOM, a framework that enables NFV-MANO to record high-level goals and performs a fully automated policy refinement that derives enforceable rules to govern NFV-MANO behavioral choices. Besides, ATOM provides a semantic verification system to find inconsistencies among policies. Experiments have shown that our solution scales well considering realistic scenarios with different sizes.
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Tomar, Vikas, and Min Zhou. "Characterization of Defect Nucleation and Propagation in Fe2O3+FCC-Al Nanocomposites During Uniaxial Tensile and Compressive Deformations." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13629.

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The objective of this research is to analyze uniaxial tensile and compressive mechanical deformations of α-Fe2O3 + fcc Al nanoceramic-metal composites using classical molecular dynamics (MD). Specifically, variations in the nucleation and the propagation of defects (such as dislocations and stacking faults etc.) with variation in the nanocomposite phase morphology and their effect on observed tensile and compressive strengths of the nanocomposites are analyzed. For this purpose, a classical molecular dynamics (MD) potential that includes an embedded atom method (EAM) cluster functional, a Mors
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Ren, Wensheng, and H. J. Carmichael. "Spontaneous emission from a moving atom in a standing-wave cavity." In OSA Annual Meeting. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.tur3.

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The spectrum of spontaneously emitted photons from an atom interacting with a single cavity mode depends on the relative sizes of the mode coupling constant and the cavity loss rate. If the coupling constant is not too large, perturbation theory can he used to show that the atomic linewidth is either increased (enhanced spontaneous emission) or decreased (inhibited spontaneous emission) by the presence of the cavity. When the coupling constant is so large that perturbation theory cannot be used, the spontaneous- emission spectrum forms a doublet, with peaks located at the normal-mode frequenci
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Zhang, N., F. Sun, L. Zhu, et al. "Characteristics of Cu Film-Like Coating Deposited Using VLPPS." In ITSC2010, edited by B. R. Marple, A. Agarwal, M. M. Hyland, et al. DVS Media GmbH, 2010. http://dx.doi.org/10.31399/asm.cp.itsc2010p0802.

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Abstract Cu coatings were obtained by the VLPPS (Very Low Pressure Plasma Spray) process using a torch F4-VB. The tank pressure was varied from 1 mbar to 5 mbar: these specific conditions can allow obtaining a higher vapor condensation fraction in the coating. Different sizes of powders are used to compare the vaporization level. The other possible influencing factors for obtaining compact film-like coating are also considered such as the distance between the torch and substrate, the orientation of the vapors and also the substrate temperatures. Microstructures of coatings are analyzed and com
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Reports on the topic "Atom sizes"

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Wilkes, Seb, and Simon Brawley. Quantum computing, sensing and communications. Parliamentary Office of Science and Technology, 2025. https://doi.org/10.58248/pn742.

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Venkatachar, Arun. Evidence for the existence of two stable sites for cobalt impurity atoms in aluminum. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.1476.

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Tetreault, Brian, Marin Kress, and Patricia DiJoseph. AIS data case study : evaluating reception of AIS position reports on the Missouri River by LOMA AIS sites in April and August 2020. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/42980.

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This Coastal and Hydraulics Engineering Technical Note (CHETN) describes a method for evaluating the received coverage from Automatic Identification System (AIS) shoreside sites along the Missouri River managed by the US Army Corps of Engineers (USACE) Lock Operations Management Application (LOMA), and presents the results of that analysis. The purpose is to identify AIS coverage gaps in the current system. Reception of AIS transmissions between shore-based transceivers and vessels is generally line-of-sight between the vessel and the AIS site antenna. However, signal reception may be affected
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Gounder, Rajamani. Dynamic Multinuclear Active Sites Formed from Mobilized Single Atoms on Heterogeneous Supports for Selective Oxidation Catalysis. Office of Scientific and Technical Information (OSTI), 2023. http://dx.doi.org/10.2172/2228579.

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Chatraphorn, Patcha, and Sojiphong Chatraphorn. Simulations of thin film growth on patterned substrates. Chulalongkorn University, 2005. https://doi.org/10.58837/chula.res.2005.34.

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Patterned substrate growth is a technique that layers of thin film are grown on a substrate with a predetermined pattern. A simple model is used to study patterned growth process with two different types of pattern: flat pattern and periodic pattern. The goals are to determine growth conditions that enable the grown film to reproduce the original pattern, and to determine how much of the original patterns survive up to a specific time. The persistence probability is used to determine fractions of survived pattern. We found that in flat patterned growth, a high substrate temperature which resul
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Nelson, Nathan, and Charles F. Yocum. Structure, Function and Utilization of Plant Photosynthetic Reaction Centers. United States Department of Agriculture, 2012. http://dx.doi.org/10.32747/2012.7699846.bard.

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Light capturing and energy conversion by PSI is one of the most fundamental processes in nature. In the heart of these adaptations stand PSI, PSII and their light harvesting antenna complexes. The main goal of this grant proposal was to obtain by X-ray crystallography information on the structure of plant photosystem I (PSI) and photosystem II (PSII) supercomplexes. We achieved several milestones along this line but as yet, like several strong laboratories around the world, we have no crystal structure of plant PSII. We have redesigned the purification and crystallization procedures and recent
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Willits, Daniel H., Meir Teitel, Josef Tanny, Mary M. Peet, Shabtai Cohen, and Eli Matan. Comparing the performance of naturally ventilated and fan-ventilated greenhouses. United States Department of Agriculture, 2006. http://dx.doi.org/10.32747/2006.7586542.bard.

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The objectives of this project were to predict the performance of naturally and fan-ventilated greenhouses as a function of climate, type of crop, evaporative cooling and greenhouse size, and to estimate the effects of the two cooling systems on yield, quality and disease development in the different crops under study. Background In the competitive field of greenhouse cultivation, growers and designers in both the US and Israel are repeatedly forced to choose between naturally ventilated (NV) and fan ventilated (FV) cooling systems as they expand their ranges in an effort to remain profitable.
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