Relevant bibliographies by topics / Intermolecular forces

Academic literature on the topic 'Intermolecular forces'

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Published: 4 June 2021
Last updated: 31 July 2024

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Journal articles on the topic "Intermolecular forces"

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Leckband, Deborah, and Jacob Israelachvili. "Intermolecular forces in biology." Quarterly Reviews of Biophysics 34, no. 2 (May 2001): 105–267. http://dx.doi.org/10.1017/s0033583501003687.

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0. Abbreviations 1061. Introduction: overview of forces in biology 1081.1 Subtleties of biological forces and interactions 1081.2 Specific and non-specific forces and interactions 1131.3 van der Waals (VDW) forces 1141.4 Electrostatic and ’double-layer‘ forces (DLVO theory) 1221.4.1 Electrostatic and double-layer interactions at very small separation 1261.5 Hydration and hydrophobic forces (structural forces in water) 1311.6 Steric, bridging and depletion forces (polymer-mediated and tethering forces) 1371.7 Thermal fluctuation forces: entropic protrusion and undulation forces 1421.8 Comparison of the magnitudes of the major non-specific forces 1461.9 Bio-recognition 1461.10 Equilibrium and non-equilibrium forces and interactions 1501.10.1 Multiple bonds in parallel 1531.10.2 Multiple bonds in series 1552. Experimental techniques for measuring forces between biological molecules and surfaces 1562.1 Different force-measuring techniques 1562.2 Measuring forces between surfaces 1612.3 Measuring force–distance functions, F(D) 1612.4 Relating the forces between different geometries: the ‘Derjaguin Approximation’ 1622.5 Adhesion forces and energies 1642.5.1 An example of the application of adhesion mechanics of biological adhesion 1662.6 Measuring forces between macroscopic surfaces: the surface forces apparatus (SFA) 1672.7 The atomic force microscope (AFM) and microfiber cantilever (MC) techniques 1732.8 Micropipette aspiration (MPA) and the bioforce probe (BFP) 1772.9 Osmotic stress (OS) and osmotic pressure (OP) techniques 1792.10 Optical trapping and the optical tweezers (OT) 1812.11 Other optical microscopy techniques: TIRM and RICM 1842.12 Shear flow detachment (SFD) measurements 1872.13 Cell locomotion on elastically deformable substrates 1893. Measurements of equilibrium (time-independent) interactions 1913.1 Long-range VDW and electrostatic forces (the two DVLO forces) between biosurfaces 1913.2 Repulsive short-range steric–hydration forces 1973.3 Adhesion forces due to VDW forces and electrostatic complementarity 2003.4 Attractive forces between surfaces due to hydrophobic interactions: membrane adhesion and fusion 2093.4.1 Hydrophobic interactions at the nano- and sub-molecular levels 2113.4.2 Hydrophobic interactions and membrane fusion 2123.5 Attractive depletion forces 2133.6 Solvation (hydration) forces in water: forces associated with water structure 2153.7 Forces between ‘soft-supported’ membranes and proteins 2183.8 Equilibrium energies between biological surfaces 2194. Non-equilibrium and time-dependent interactions: sequential events that evolve in space and time 2214.1 Equilibrium and non-equilibrium time-dependent interactions 2214.2 Adhesion energy hysteresis 2234.3 Dynamic forces between biomolecules and biomolecular aggregates 2264.3.1 Strengths of isolated, noncovalent bonds 2274.3.2 The strengths of isolated bonds depend on the activation energy for unbinding 2294.4 Simulations of forced chemical transformations 2324.5 Forced extensions of biological macromolecules 2354.6 Force-induced versus thermally induced chemical transformations 2394.7 The rupture of bonds in series and in parallel 2424.7.1 Bonds in series 2424.7.2 Bonds in parallel 2444.8 Dynamic interactions between membrane surfaces 2464.8.1 Lateral mobility on membrane surfaces 2464.8.2 Intersurface forces depend on the rate of approach and separation 2494.9 Concluding remarks 2535. Acknowledgements 2556. References 255While the intermolecular forces between biological molecules are no different from those that arise between any other types of molecules, a ‘biological interaction’ is usually very different from a simple chemical reaction or physical change of a system. This is due in part to the higher complexity of biological macromolecules and systems that typically exhibit a hierarchy of self-assembling structures ranging in size from proteins to membranes and cells, to tissues and organs, and finally to whole organisms. Moreover, interactions do not occur in a linear, stepwise fashion, but involve competing interactions, branching pathways, feedback loops, and regulatory mechanisms.
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Keating, S. P. "Optics and intermolecular forces." Molecular Physics 58, no. 1 (May 1986): 33–52. http://dx.doi.org/10.1080/00268978600100971.

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Henderson, S. J., and J. W. White. "Microassembly by intermolecular forces." Journal of Applied Crystallography 21, no. 6 (December 1, 1988): 744–50. http://dx.doi.org/10.1107/s0021889888008118.

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Chen, Wenhua, and Jan A. K. Paul. "Intermolecular Forces in Porphyrin Crystals." Inorganic Chemistry 34, no. 1 (January 1995): 199–201. http://dx.doi.org/10.1021/ic00105a033.

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Meot-Ner, Michael. "Intermolecular forces in organic clusters." Journal of the American Chemical Society 114, no. 9 (April 1992): 3312–22. http://dx.doi.org/10.1021/ja00035a024.

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Gupta, N. P. "Intermolecular forces in solid neon." Solid State Communications 54, no. 11 (June 1985): 1017–20. http://dx.doi.org/10.1016/0038-1098(85)90177-2.

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Liang, Ying Q., and K. L. C. Hunt. "Intramolecular screening of intermolecular forces." Journal of Chemical Physics 98, no. 6 (March 15, 1993): 4626–35. http://dx.doi.org/10.1063/1.464990.

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ROAMBA, Brahima, Jean de Dieu ZABSONRE, and Yacouba ZONGO. "On the Existence of Global Weak Solutions to 1D Pollutant Transport Model." Journal of Mathematics Research 9, no. 4 (July 23, 2017): 124. http://dx.doi.org/10.5539/jmr.v9n4p124.

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We consider a one-dimensionnal bilayer model coupling shallow water and Reynolds lubrication equations with a molecular interactions between molecules. These molecular interactions give rise to intermolecular forces, namely the long-range van der Waals forces and short-range Born intermolecular forces. In this paper, an expression will be used to take into account all these intermolecular forces. Our model is a similar model studied in (Roamba, Zabsonré & Zongo, 2017). The model considered is represented by the two superposed immiscible fluids. A similar model was studied in (Zabsonré Lucas & Fernandez-Nieto, 2009) but the authors do not take into account the intermolecular forces. Without hypothesis about the unknowns as in (Roamba, Zabsonré & Zongo, 2017), we show the existence of global weak solution in time in a periodic domain.
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Patrick, Chris. "Altering intermolecular forces with optical cavities." Scilight 2021, no. 10 (March 5, 2021): 101106. http://dx.doi.org/10.1063/10.0003732.

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Wash, Paul L., Shihong Ma, Ulrike Obst, and Julius Rebek. "Nitrogen−Halogen Intermolecular Forces in Solution." Journal of the American Chemical Society 121, no. 34 (September 1999): 7973–74. http://dx.doi.org/10.1021/ja991653m.

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Dissertations / Theses on the topic "Intermolecular forces"

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Bianchini, Thiago Bufeli [UNESP]. "O ensino por investigação abrindo espaços para a argumentação de alunos e professores do ensino médio." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/90983.

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Made available in DSpace on 2014-06-11T19:24:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-09-28Bitstream added on 2014-06-13T19:52:39Z : No. of bitstreams: 1 bianchini_tb_me_bauru.pdf: 683609 bytes, checksum: ef65f80c6217a55d4db4bb22436bf15c (MD5)
Nas últimas décadas, o Ensino de Ciências vem buscando estratégias que favoreçam o entendimento dos conteúdos científicos ou, como indica Driver (1999), a enculturação da Ciência (DRIVER, CAPECCHI E CARVALHO, MORTIMER, 2000), além da formação de alunos e professores críticos e reflexivos. O uso da argumentação em salas de aula pode se tornar grande aliada na formação de jovens pensadores e críticos, que consigam utilizar seus pensamentos em favor próprio e em conjunto, que sejam capazes de discutir problemas e propor soluções, não apenas na escola, mas em seu dia a dia. Para favorecer a argumentação, foi utilizado um minicurso investigativo com o tema Forças intermoleculares. Nossa proposta de trabalho procurou investigar quais são as potencialidades do uso integrado desses referenciais teóricos e qual a contribuição de uma proposta de minicurso invesetigativo no desenvolvimento de habilidades de argumentação em alunos e futuros professores além de analisar a proposta investigativa utilizada. Os dados analisados foram divididos em três categorias, i) a proposta do minicurso investigativo com base na classificação de atividades de ensino proposta por Canal (2000), ii) a qualidade da argumentação com Osborne et al (2004) e iii) a atuação do professor na elaboração dos argumentos dos alunos com Mendonça e Justil (2009). Os resultados mostram que a atividade proposta favoreceu a argumetnação dos alunos e professores, possibilitando a abertura de espaços na sala de aula para que ocorra diálogo entre os alunos e os professores. Pode-se perceber o papel fundamental do professor na elaboração dos argumentos dos alunos, pois, se os mesmos não direcionarem as discussões, os argumentos podem ser mal elaborados ou mal explorados
In recent decades, the Teaching if Science has been searching for strategies that enhance the understanding of scientific content or, as indicated by Driver (1999), enculturation of Science (DRIVER, Capecchi and CARVALHO, MORTIMER, 2000) and the training of teachers ans students to be critical and reflective. The use of argumentation in the classroom can become a great ally in forming young thinkers and critics, who can use their own behalf and thoughts together; they can discuss problems and propose solutions, not just in shool but in their day by day. To facilitate the argument we used an investigate shor course with the theme Intermolecular Forces. Our proposal of work aimed to investigate what are the potential use of integrated theoretical and the contribution of a proposed short course in the development of investigate reasoning abilities in students and future teachers as well as used to analyze the research proposal. Data were divided into three categories, i) the proposed investigative mini course based on the classification of educational activities proposed by Canal (2000), ii) the quality of argumentation with Osborne et al (2004) and iii) the performance of teacher in preparing students with the arguments of Mendonça and Justi (2009). The results show that the proposed activity favored the argument of the students and teachers, enabling the opening of spaces in the classroom dialogue to occur between students and teachers. It can be noticed the teqacher's role in the development of students arguments, because if they do not guiding discussions arguments can be poorly designed or poorly explored
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Bianchini, Thiago Bufeli. "O ensino por investigação abrindo espaços para a argumentação de alunos e professores do ensino médio /." Bauru : [s.n.], 2011. http://hdl.handle.net/11449/90983.

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Orientador: Silvia Regina Quijadas Ara Zuliani
Banca: Maria Eunice Ribeiro Marcondes
Banca: Odete Pacubi Baierl Teixeira
Resumo: Nas últimas décadas, o Ensino de Ciências vem buscando estratégias que favoreçam o entendimento dos conteúdos científicos ou, como indica Driver (1999), a enculturação da Ciência (DRIVER, CAPECCHI E CARVALHO, MORTIMER, 2000), além da formação de alunos e professores críticos e reflexivos. O uso da argumentação em salas de aula pode se tornar grande aliada na formação de jovens pensadores e críticos, que consigam utilizar seus pensamentos em favor próprio e em conjunto, que sejam capazes de discutir problemas e propor soluções, não apenas na escola, mas em seu dia a dia. Para favorecer a argumentação, foi utilizado um minicurso investigativo com o tema "Forças intermoleculares". Nossa proposta de trabalho procurou investigar quais são as potencialidades do uso integrado desses referenciais teóricos e qual a contribuição de uma proposta de minicurso invesetigativo no desenvolvimento de habilidades de argumentação em alunos e futuros professores além de analisar a proposta investigativa utilizada. Os dados analisados foram divididos em três categorias, i) a proposta do minicurso investigativo com base na classificação de atividades de ensino proposta por Canal (2000), ii) a qualidade da argumentação com Osborne et al (2004) e iii) a atuação do professor na elaboração dos argumentos dos alunos com Mendonça e Justil (2009). Os resultados mostram que a atividade proposta favoreceu a argumetnação dos alunos e professores, possibilitando a abertura de espaços na sala de aula para que ocorra diálogo entre os alunos e os professores. Pode-se perceber o papel fundamental do professor na elaboração dos argumentos dos alunos, pois, se os mesmos não direcionarem as discussões, os argumentos podem ser mal elaborados ou mal explorados
Abstract: In recent decades, the Teaching if Science has been searching for strategies that enhance the understanding of scientific content or, as indicated by Driver (1999), enculturation of Science (DRIVER, Capecchi and CARVALHO, MORTIMER, 2000) and the training of teachers ans students to be critical and reflective. The use of argumentation in the classroom can become a great ally in forming young thinkers and critics, who can use their own behalf and thoughts together; they can discuss problems and propose solutions, not just in shool but in their day by day. To facilitate the argument we used an investigate shor course with the theme "Intermolecular Forces". Our proposal of work aimed to investigate what are the potential use of integrated theoretical and the contribution of a proposed short course in the development of investigate reasoning abilities in students and future teachers as well as used to analyze the research proposal. Data were divided into three categories, i) the proposed investigative mini course based on the classification of educational activities proposed by Canal (2000), ii) the quality of argumentation with Osborne et al (2004) and iii) the performance of teacher in preparing students with the arguments of Mendonça and Justi (2009). The results show that the proposed activity favored the argument of the students and teachers, enabling the opening of spaces in the classroom dialogue to occur between students and teachers. It can be noticed the teqacher's role in the development of students arguments, because if they do not guiding discussions arguments can be poorly designed or poorly explored
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Gellert, P. R. "Spectroscopic and theoretical studies of intermolecular forces." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234945.

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Al-Rasoul, Khalid. "Intermolecular forces in amphiphiles : an emulsion stability problem." Thesis, University of Reading, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.256365.

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Zarari, Maria Prodromou. "Intermolecular forces from the speed of sound in gases." Thesis, Imperial College London, 1993. http://hdl.handle.net/10044/1/8828.

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Jiemchooroj, Auayporn. "First-principles calculations of long-range intermolecular dispersion forces." Licentiate thesis, Linköping : Dept. of Electrical Engineering, Linköping University, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-7512.

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Robertson, Rae Marie. "Single-molecule studies of DNA dynamics and intermolecular forces." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2007. http://wwwlib.umi.com/cr/ucsd/fullcit?p3284227.

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Thesis (Ph. D.)--University of California, San Diego, 2007.
Title from first page of PDF file (viewed January 11, 2008). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 139-149).
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Chatten, Ryan. "The effect of intermolecular forces on diffusion in polymers." Thesis, Brunel University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393176.

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Jones, Andrew. "Quantum drude oscillators for accurate many-body intermolecular forces." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4878.

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One of the important early applications of Quantum Mechanics was to explain the Van-der-Waal’s 1/R6 potential that is observed experimentally between two neutral species, such as noble gas atoms, in terms of correlated uncertainty between interacting dipoles, an effect that does not occur in the classical limit [London-Eisenschitz,1930]. When many-body correlations and higher-multipole interactions are taken into account they yield additional many-body and higher-multipole dispersion terms. Dispersion energies are closely related to electrostatic interactions and polarisation [Hirschfelder-Curtiss-Bird,1954]. Hydrogen bonding, the dominant force in water, is an example of an electrostatic effect, which is also strongly modified by polarisation effects. The behaviour of ions is also strongly influenced by polarisation. Where hydrogen bonding is disrupted, dispersion tends to act as a more constant cohesive force. It is the only attractive force that exists between hydrophobes, for example. Thus all three are important for understanding the detailed behaviour of water, and effects that happen in water, such as the solvation of ions, hydrophobic de-wetting, and thus biological nano-structures. Current molecular simulation methods rarely go beyond pair-wise potentials, and so lose the rich detail of many-body polarisation and dispersion that would permit a force field to be transferable between different environments. Empirical force-fields fitted in the gas phase, which is dominated by two-body interactions, generally do not perform well in the condensed (many-body) phases. The leading omitted dispersion term is the Axilrod-Teller-Muto 3-body potential, which does not feature in standard biophysical force-fields. Polarization is also usually ommitted, but it is sometimes included in next-generation force-fields following seminal work by Cochran [1971]. In practice, many-body forces are approximated using two-body potentials fitted to reflect bulk behaviour, but these are not transferable because they do not reproduce detailed behaviour well, resulting in spurious results near inhomogeneities, such as solvated hydrophobes and ions, surfaces and interfaces. The Quantum Drude Oscillator model (QDO) unifies many-body, multipole polarisation and dispersion, intrinsically treating them on an equal footing, potentially leading to simpler, more accurate, and more transferable force fields when it is applied in molecular simulations. The Drude Oscillator is simply a model atom wherein a single pseudoelectron is bound harmonically to a single pseudonucleus, that interacts via damped coulomb interactions [Drude,1900]. Path Integral [Feynman-Hibbs,1965] Molecular Dynamics (PIMD) can, in principle, provide an exact treatment for moving molecules at finite temperature on the Born- Oppenheimer surface due to their pseudo-electrons. PIMD can be applied to large systems, as it scales like N log(N), with multiplicative prefactor P that can be effectively parallelized away on modern supercomputers. There are other ways to treat dispersion, but all are computationally intensive and cannot be applied to large systems. These include, for example, Density Functional Theory provides an existence proof that a functional exists to include dispersion, but we dont know the functional. We outline the existing methods, and then present new density matrices to improve the discretisation of the path integral. Diffusion Monte Carlo (DMC), first proposed by Fermi, allows the fast computation of high-accuracy energies for static nuclear configurations, making it a useful method for model development, such as fitting repulsion potentials, but there is no straightforward way to generate forces. We derived new methods and trial wavefunctions for DMC, allowing the computation of energies for much larger systems to high accuracy. A Quantum Drude model of Xenon, fit in the gas-phase, was simulated in the condensed-phase using both DMC and PIMD. The new DMC methods allowed for calculation of the bulk modulus and lattice constant of FCC-solid Xenon. Both were in excellent agreement with experiment even though this model was fitted in the gasphase, demonstrating the power of Quantum Drudes to build transferable models by capturing many-body effects. We also used the Xenon model to test the new PIMD methods. Finally, we present the outline of a new QDO model of water, including QDO parameters fitted to the polarisabilities and dispersion coefficients of water.
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Monari, Antonio <1976&gt. "Ab initio computation of electric properties and intermolecular forces." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/468/1/tesi.pdf.

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Books on the topic "Intermolecular forces"

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Huyskens, Pierre L., Werner A. P. Luck, and Therese Zeegers-Huyskens, eds. Intermolecular Forces. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76260-4.

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J, Wales David, ed. Intermolecular forces and clusters. Berlin: Springer, 2005.

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1949-, Gans W., Boeyens J. C. A, and Structural Chemistry Indaba on Molecular Interactions (2nd : 1997 : Kruger National Park, South Africa), eds. Intermolecular interactions. New York: Plenum Press, 1998.

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Wales, D. J., ed. Intermolecular Forces and Clusters II. Berlin/Heidelberg: Springer-Verlag, 2005. http://dx.doi.org/10.1007/b100423.

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Wales, D. J., ed. Intermolecular Forces and Clusters I. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/b101390.

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C, Maitland Geoffrey, ed. Intermolecular forces: Their origin and determination. Oxford: Clarendon Press, 1987.

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Maurice, Rigby, ed. The Forces between molecules. Oxford [Oxfordshire]: Clarendon Press, 1986.

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Salam, Akbar. Molecular quantum electrodynamics: Long-range intermolecular interactions. Hoboken, N.J: Wiley, 2010.

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Havenith-Newen, Martina. Infrared spectroscopy of molecular clusters: An introduction to intermolecular forces. New York: Springer, 2001.

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1927-, Huyskens P. L., Luck Werner A. P, and Zeegers-Huyskens T. 1922-, eds. Intermolecular forces: An introduction to modern methods and results. Berlin: Springer-Verlag, 1991.

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Book chapters on the topic "Intermolecular forces"

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Zeegers-Huyskens, Th, and P. Huyskens. "Intermolecular Forces." In Intermolecular Forces, 1–30. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76260-4_1.

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Kleeberg, H. "Cooperative Effects Involved in H-Bond Formation." In Intermolecular Forces, 251–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76260-4_10.

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Limbach, H. H. "NMR Studies of Elementary Steps of Multiple Proton and Deuteron Transfers in Liquids, Crystals, and Organic Glasses." In Intermolecular Forces, 281–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76260-4_11.

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Rademann, K. "Cluster Research with Spectroscopic Molecular Beam Techniques." In Intermolecular Forces, 297–315. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76260-4_12.

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Buck, U. "Molecular Beam Scattering: Method and Results on Intermolecular Potentials." In Intermolecular Forces, 317–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76260-4_13.

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Bopp, P. "Molecular Dynamics (MD) Computer Simulations of Hydrogen-Bonded Liquids." In Intermolecular Forces, 337–66. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76260-4_14.

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Somsen, G. "The Energy of Intermolecular Interactions in Solution." In Intermolecular Forces, 367–86. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76260-4_15.

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Siegel, G. G., and P. L. Huyskens. "The Mobile Order Created by Hydrogen Bonds in Liquids." In Intermolecular Forces, 387–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76260-4_16.

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Huyskens, P. L., and G. G. Siegel. "Hydrogen Bonding and Entropy." In Intermolecular Forces, 397–408. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76260-4_17.

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Barthel, J. "Specific Intermolecular Forces and the Permittivity and Conductivity of Solutions." In Intermolecular Forces, 409–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76260-4_18.

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Conference papers on the topic "Intermolecular forces"

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Meindinyo, Remi-Erempagamo T., and Thor Martin Svartås. "Intermolecular Forces in Clathrate Hydrate Related Processes." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-41774.

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The thermodynamics and kinetics of clathrate hydrate formation processes are topics of high scientific interest, especially in the petroleum industry. Researchers have made efforts at understanding the underlying processes that explicate the macroscopic observations from experiments and other research methods of gas hydrate formation. To achieve this, they have employed theories founded upon force related intermolecular interactions. Some of the theories and concepts employed include hydrogen bonding, the Leonard Jones force principle, and steric interactions. This paper gives a brief review of how these intermolecular interaction principles have been understood, and used as tools, in explaining the inaccessible microscopic processes, that characterize clathrate hydrate formation. It touches upon nucleation, growth, and inhibition processes.
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Mese, Ali I. "Clay‐water interaction, intermolecular forces and acoustic velocity." In SEG Technical Program Expanded Abstracts 2008. Society of Exploration Geophysicists, 2008. http://dx.doi.org/10.1190/1.3059218.

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Pathak, Saurabh, and Shao Wang. "A Dynamic Model of the Magnetic Head Slider With Contact and Off-Track Motion due to a Thermally Actuated Protrusion or a Moving Bump Involving Intermolecular Forces." In ASME 2016 Conference on Information Storage and Processing Systems. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/isps2016-9614.

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A computationally efficient five-degree-of-freedom dynamic model was developed to simulate the motion of a magnetic head slider under the conditions of moving-bump collision and of contact due to an expanding protrusion on the slider for thermal flying-height control, with consideration of intermolecular forces. Compared to results obtained without intermolecular forces for a bump on the rotating disk, the intermolecular forces cause a significantly greater normal contact force, a larger roll angle and a larger off-track displacement under nonzero skew. When an expanding protrusion on the slider reaches a position close to the disk surface, the intermolecular forces pull the slider into contact at an earlier time and keep the protrusion in contact for a longer duration, which, with friction under nonzero skew, results in a substantially greater off-track displacement.
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Deoras, Saurabh K., and Frank E. Talke. "Effect of Intermolecular Forces on the Dynamic Response of a Slider." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63679.

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As the spacing between the slider and the disk approaches atomic distances, near range intermolecular forces start to act at the slider-disk interface. Wu and Bogy have numerically predicted that intermolecular forces become of importance when the slider-disk spacing is lower than 5nm [1]. Thornton and Bogy have proposed that it may not be possible for a slider to fly at a very low flying height without “snapping” and without having slider disk contacts [2; 3]. According to their calculations, a slider would “snap” (get pulled very close) to the disk surface, as a result of attractive intermolecular forces, when the flying height is lowered below a certain “critical” flying height. However, the question arises whether a slider is likely to “snap” at flying heights greater than the “critical” flying height due to its dynamic response.
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Aquilanti, Vincenzo. "Molecular Alignment in Gaseous Expansions and Anisotropy of Intermolecular Forces." In RAREFIED GAS DYNAMICS: 24th International Symposium on Rarefied Gas Dynamics. AIP, 2005. http://dx.doi.org/10.1063/1.1941509.

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Arya, Maneesh, Jose A. Lopez, Gabriel M. Romo, Jing-Fei Dong, Larry V. McIntire, Joel L. Moake, and Bahman Anvari. "Investigating intermolecular forces associated with thrombus initiation using optical tweezers." In International Symposium on Biomedical Optics, edited by Daniel L. Farkas and Robert C. Leif. SPIE, 2002. http://dx.doi.org/10.1117/12.468336.

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Carvalho, Gleyde Márcia Teixeira Borges, and Darlene Pereira dos Santos. "Intermolecular forces: a methodological proposal of teaching based on experimentation." In II INTERNATIONAL SEVEN MULTIDISCIPLINARY CONGRESS. Seven Congress, 2023. http://dx.doi.org/10.56238/homeinternationalanais-022.

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Abstract Most high school students consider chemistry to be one of the most difficult subjects to understand. Whether by its very specific language, by abstraction, with glasses, or even by the way it is transmitted: in a repetitive and decontextualized way, being only memorized by the student and with practical applications far from everyday life.
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Ono, Kyosuke. "Numerical Analysis of Contact Mechanics Between Spherical Slider and Disk Due to Intermolecular Forces." In STLE/ASME 2008 International Joint Tribology Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ijtc2008-71076.

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A numerical method for analyzing the elastic contact mechanics due to intermolecular forces between a spherical slider and a disk is presented and typical results for a 1-μm radius sphere (which simulates a roughness asperity), 2-mm radius sphere (test slider), and 10–30-mm radius spheres (magnetic head sliders) are given. A numerical method for evaluating intermolecular forces at contacting asperities is also presented.
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Moghimi Zand, M., and M. T. Ahmadian. "Influence of Intermolecular Forces on Dynamic Pull-In Instability of Micro/Nano Bridges." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-25095.

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In this study, influences of intermolecular forces on dynamic pull-in instability of electrostatically actuated beams are investigated. Effects of midplane stretching, electrostatic actuation, fringing fields and intermolecular forces are considered. The boundary conditions of the beams are clamped-free and clamped-clamped. A finite element model is developed to discretize the governing equations and Newmark time discretization is then employed to solve the discretized equations. The results indicate that by increasing the Casimir and van der Waals effects, the effect of inertia on pull-in values considerably increases.
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Zanaty, M., R. Jansen, V. Rochus, M. Abbas, A. Witvrouw, H. A. C. Tilmans, and X. Rottenberg. "Influence of nonlinear intermolecular forces on the harmonic behavior of NEM resonators." In 2013 14th International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE). IEEE, 2013. http://dx.doi.org/10.1109/eurosime.2013.6529974.

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Reports on the topic "Intermolecular forces"

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Jones, M. Evaluation of intermolecular attractive forces in coal-derived liquids. Office of Scientific and Technical Information (OSTI), August 1989. http://dx.doi.org/10.2172/6798722.

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Ostersetzer-Biran, Oren, and Jeffrey Mower. Novel strategies to induce male sterility and restore fertility in Brassicaceae crops. United States Department of Agriculture, January 2016. http://dx.doi.org/10.32747/2016.7604267.bard.

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Abstract Mitochondria are the site of respiration and numerous other metabolic processes required for plant growth and development. Increased demands for metabolic energy are observed during different stages in the plants life cycle, but are particularly ample during germination and reproductive organ development. These activities are dependent upon the tight regulation of the expression and accumulation of various organellar proteins. Plant mitochondria contain their own genomes (mtDNA), which encode for rRNAs, tRNAs and some mitochondrial proteins. Although all mitochondria have probably evolved from a common alpha-proteobacterial ancestor, notable genomic reorganizations have occurred in the mtDNAs of different eukaryotic lineages. Plant mtDNAs are notably larger and more variable in size (ranging from 70~11,000 kbp in size) than the mrDNAs in higher animals (16~19 kbp). Another unique feature of plant mitochondria includes the presence of both circular and linear DNA fragments, which undergo intra- and intermolecular recombination. DNA-seq data indicate that such recombination events result with diverged mitochondrial genome configurations, even within a single plant species. One common plant phenotype that emerges as a consequence of altered mtDNA configuration is cytoplasmic male sterility CMS (i.e. reduced production of functional pollen). The maternally-inherited male sterility phenotype is highly valuable agriculturally. CMS forces the production of F1 hybrids, particularly in predominantly self-pollinating crops, resulting in enhanced crop growth and productivity through heterosis (i.e. hybrid vigor or outbreeding enhancement). CMS lines have been implemented in some cereal and vegetables, but most crops still lack a CMS system. This work focuses on the analysis of the molecular basis of CMS. We also aim to induce nuclear or organellar induced male-sterility in plants, and to develop a novel approach for fertility restoration. Our work focuses on Brassicaceae, a large family of flowering plants that includes Arabidopsis thaliana, a key model organism in plant sciences, as well as many crops of major economic importance (e.g., broccoli, cauliflower, cabbage, and various seeds for oil production). In spite of the genomic rearrangements in the mtDNAs of plants, the number of genes and the coding sequences are conserved among different mtDNAs in angiosperms (i.e. ~60 genes encoding different tRNAs, rRNAs, ribosomal proteins and subunits of the respiratory system). Yet, in addition to the known genes, plant mtDNAs also harbor numerous ORFs, most of which are not conserved among species and are currently of unknown function. Remarkably, and relevant to our study, CMS in plants is primarily associated with the expression of novel chimericORFs, which likely derive from recombination events within the mtDNAs. Whereas the CMS loci are localized to the mtDNAs, the factors that restore fertility (Rfs) are identified as nuclear-encoded RNA-binding proteins. Interestingly, nearly all of the Rf’s are identified as pentatricopeptide repeat (PPR) proteins, a large family of modular RNA-binding proteins that mediate several aspects of gene expression primarily in plant organelles. In this project we proposed to develop a system to test the ability of mtORFs in plants, which are closely related to known CMS factors. We will induce male fertility in various species of Brassicaceae, and test whether a down-relation in the expression of the recombinantCMS-genes restores fertility, using synthetically designed PPR proteins.
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