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	<title>Quantum Pharmaceuticals &#187; polar liquid</title>
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	<link>http://q-pharm.com</link>
	<description>The drug discovery company</description>
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		<title>Effects of the surface density on the stability of surface electrostatics models</title>
		<link>http://q-pharm.com/2010/05/effects-of-the-surface-density-on-the-stability-of-surface-electrostatics-models/</link>
		<comments>http://q-pharm.com/2010/05/effects-of-the-surface-density-on-the-stability-of-surface-electrostatics-models/#comments</comments>
		<pubDate>Thu, 20 May 2010 05:57:17 +0000</pubDate>
		<dc:creator>Peter Fedichev, Quantum CTO</dc:creator>
				<category><![CDATA[Generalized Born]]></category>
		<category><![CDATA[polar liquid]]></category>
		<category><![CDATA[solvation energy]]></category>
		<category><![CDATA[water]]></category>

		<guid isPermaLink="false">http://q-pharm.com/?p=236</guid>
		<description><![CDATA[We&#8217;ve been extensively involved in developing new and testing already existing methods for continuous electrostatics problems solution. Large part of the effort is building and understanding of the so called Generalized Born models. It&#8217;s been known for quite a while that although various incarnations of...


Related posts:<ol><li><a href='http://q-pharm.com/2009/12/on-surface-charges-generalized-born-calculation-demonstration/' rel='bookmark' title='Permanent Link: O(N) Surface Charges Generalized Born calculation demonstration'>O(N) Surface Charges Generalized Born calculation demonstration</a></li>
<li><a href='http://q-pharm.com/2010/05/fft-acceleration-demonstration-for-surfacegb-methods/' rel='bookmark' title='Permanent Link: FFT acceleration demonstration for (surface)GB methods'>FFT acceleration demonstration for (surface)GB methods</a></li>
<li><a href='http://q-pharm.com/2009/11/protein-solvation-energies-and-gb-surface-charges-perfect-match/' rel='bookmark' title='Permanent Link: Protein solvation energies and GB surface charges: perfect match!'>Protein solvation energies and GB surface charges: perfect match!</a></li>
<li><a href='http://q-pharm.com/2010/05/surface-gb-models-the-ultimate-test/' rel='bookmark' title='Permanent Link: Surface GB models: the ultimate test'>Surface GB models: the ultimate test</a></li>
<li><a href='http://q-pharm.com/2009/11/water-polarization-charges-in-generalized-born-models/' rel='bookmark' title='Permanent Link: Water polarization charges in Generalized Born models.'>Water polarization charges in Generalized Born models.</a></li>
</ol>

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		<wfw:commentRss>http://q-pharm.com/2010/05/effects-of-the-surface-density-on-the-stability-of-surface-electrostatics-models/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Water molecules alignments on a hydrophobic surface &#8211; I</title>
		<link>http://q-pharm.com/2010/04/water-molecules-alignments-on-a-hydrophobic-surface-i/</link>
		<comments>http://q-pharm.com/2010/04/water-molecules-alignments-on-a-hydrophobic-surface-i/#comments</comments>
		<pubDate>Sun, 11 Apr 2010 19:45:54 +0000</pubDate>
		<dc:creator>Peter Fedichev, Quantum CTO</dc:creator>
				<category><![CDATA[polar liquid]]></category>
		<category><![CDATA[water]]></category>

		<guid isPermaLink="false">http://q-pharm.com/?p=201</guid>
		<description><![CDATA[Water molecules interact strongly &#8220;using&#8221; both the long range dipole-dipole and short-range &#8220;hydrogen bonds&#8221; to form sophisticated networks. As described in our previous post, water molecules align along a hydrophobic surface and form an strongly-interacting 2d system of molecular dipoles. Normally there is no true...


Related posts:<ol><li><a href='http://q-pharm.com/2010/03/water-polarization-and-density-profiles-at-a-gas-liquid-interface/' rel='bookmark' title='Permanent Link: Water polarization and density profiles at a gas-liquid interface'>Water polarization and density profiles at a gas-liquid interface</a></li>
<li><a href='http://q-pharm.com/2009/04/molecular-polarization-on-a-polar-liquid-interface-the-structure-of-a-water-surface/' rel='bookmark' title='Permanent Link: Molecular polarization on a polar liquid interface: the structure of a water surface'>Molecular polarization on a polar liquid interface: the structure of a water surface</a></li>
<li><a href='http://q-pharm.com/2009/11/three-great-ways-to-calculate-born-radii-beyond-the-coulomb-field-approximation/' rel='bookmark' title='Permanent Link: Three great ways to calculate Born radii beyond the Coulomb Field Approximation'>Three great ways to calculate Born radii beyond the Coulomb Field Approximation</a></li>
<li><a href='http://q-pharm.com/2008/09/the-nature-of-percolation-phase-transition-in-films-of-hydration-water-around-immersed-bodies/' rel='bookmark' title='Permanent Link: The nature of percolation phase transition in films of hydration water around immersed bodies.'>The nature of percolation phase transition in films of hydration water around immersed bodies.</a></li>
<li><a href='http://q-pharm.com/2008/09/spontaneous-polarization-of-a-polar-liquid-next-to-nano-scale-impurities/' rel='bookmark' title='Permanent Link: Spontaneous polarization of a polar liquid next to nano-scale impurities'>Spontaneous polarization of a polar liquid next to nano-scale impurities</a></li>
</ol>

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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Water polarization and density profiles at a gas-liquid interface</title>
		<link>http://q-pharm.com/2010/03/water-polarization-and-density-profiles-at-a-gas-liquid-interface/</link>
		<comments>http://q-pharm.com/2010/03/water-polarization-and-density-profiles-at-a-gas-liquid-interface/#comments</comments>
		<pubDate>Thu, 25 Mar 2010 06:13:58 +0000</pubDate>
		<dc:creator>Peter Fedichev, Quantum CTO</dc:creator>
				<category><![CDATA[polar liquid]]></category>
		<category><![CDATA[water]]></category>

		<guid isPermaLink="false">http://q-pharm.com/?p=195</guid>
		<description><![CDATA[The true picture of the water  molecules ordering next to a hydrophobic surface or a liquid-gas interface is in fact more complicated than a model. Next to the interface both the water polarization and the density should vanish. To account for the density changes we incorporated the density variations into the free energy functional. The resulting model even though only in the mean field approximation reveals spontaneous liquid polarization at the liquid boundary. The spontaneous polarization of the liquid is the consequence of the dipole-dipole interactions and effectively makes the liquid interface behave as a ferro-electric film.


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<li><a href='http://q-pharm.com/2008/08/ferro-electric-phase-transition-in-a-polar-liquid-and-the-nature-of-lambda-transition-in-supercooled-water/' rel='bookmark' title='Permanent Link: Ferro-electric phase transition in a polar liquid and the nature of lambda-transition in supercooled water'>Ferro-electric phase transition in a polar liquid and the nature of lambda-transition in supercooled water</a></li>
<li><a href='http://q-pharm.com/2009/12/ferro-electric-phase-transition-in-a-polar-liquid-and-the-nature-of-lambda-transition-in-supercooled-water-2/' rel='bookmark' title='Permanent Link: Ferro-electric phase transition in a polar liquid and the nature of \lambda-transition in supercooled water'>Ferro-electric phase transition in a polar liquid and the nature of \lambda-transition in supercooled water</a></li>
<li><a href='http://q-pharm.com/2010/04/water-molecules-alignments-on-a-hydrophobic-surface-i/' rel='bookmark' title='Permanent Link: Water molecules alignments on a hydrophobic surface &#8211; I'>Water molecules alignments on a hydrophobic surface &#8211; I</a></li>
<li><a href='http://q-pharm.com/2008/09/spontaneous-polarization-of-a-polar-liquid-next-to-nano-scale-impurities/' rel='bookmark' title='Permanent Link: Spontaneous polarization of a polar liquid next to nano-scale impurities'>Spontaneous polarization of a polar liquid next to nano-scale impurities</a></li>
</ol>

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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Ferro-electric phase transition in a polar liquid and the nature of \lambda-transition in supercooled water</title>
		<link>http://q-pharm.com/2009/12/ferro-electric-phase-transition-in-a-polar-liquid-and-the-nature-of-lambda-transition-in-supercooled-water-2/</link>
		<comments>http://q-pharm.com/2009/12/ferro-electric-phase-transition-in-a-polar-liquid-and-the-nature-of-lambda-transition-in-supercooled-water-2/#comments</comments>
		<pubDate>Sun, 20 Dec 2009 11:20:38 +0000</pubDate>
		<dc:creator>Peter Fedichev, Quantum CTO</dc:creator>
				<category><![CDATA[polar liquid]]></category>
		<category><![CDATA[publications]]></category>
		<category><![CDATA[water]]></category>

		<guid isPermaLink="false">http://q-pharm.com/2009/12/ferro-electric-phase-transition-in-a-polar-liquid-and-the-nature-of-lambda-transition-in-supercooled-water-2/</guid>
		<description><![CDATA[P.O. Fedichev, L.I. Menshikov (Submitted on 7 Aug 2008 (v1), last revised 20 Dec 2009 (this version, v3)) We develop a series of approximations to calculate free energy of a polar liquid. We show that long range nature of dipole interactions between the molecules leads...


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<li><a href='http://q-pharm.com/2009/12/phospholipid-membranes-repulsion-at-nm-distances-explained-within-a-continuous-water-model/' rel='bookmark' title='Permanent Link: Phospholipid membranes repulsion at nm-distances explained within a continuous water model'>Phospholipid membranes repulsion at nm-distances explained within a continuous water model</a></li>
<li><a href='http://q-pharm.com/2008/09/spontaneous-polarization-of-a-polar-liquid-next-to-nano-scale-impurities/' rel='bookmark' title='Permanent Link: Spontaneous polarization of a polar liquid next to nano-scale impurities'>Spontaneous polarization of a polar liquid next to nano-scale impurities</a></li>
<li><a href='http://q-pharm.com/2010/03/water-polarization-and-density-profiles-at-a-gas-liquid-interface/' rel='bookmark' title='Permanent Link: Water polarization and density profiles at a gas-liquid interface'>Water polarization and density profiles at a gas-liquid interface</a></li>
</ol>

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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Phospholipid membranes repulsion at nm-distances explained within a continuous water model</title>
		<link>http://q-pharm.com/2009/12/phospholipid-membranes-repulsion-at-nm-distances-explained-within-a-continuous-water-model/</link>
		<comments>http://q-pharm.com/2009/12/phospholipid-membranes-repulsion-at-nm-distances-explained-within-a-continuous-water-model/#comments</comments>
		<pubDate>Mon, 14 Dec 2009 12:59:49 +0000</pubDate>
		<dc:creator>Peter Fedichev, Quantum CTO</dc:creator>
				<category><![CDATA[polar liquid]]></category>
		<category><![CDATA[publications]]></category>
		<category><![CDATA[solvation energy]]></category>
		<category><![CDATA[water]]></category>

		<guid isPermaLink="false">http://q-pharm.com/?p=167</guid>
		<description><![CDATA[P. O. Fedichev, L.I. Menshikov (Submitted on 5 Aug 2009 (v1), last revised 14 Dec 2009 (this version, v2)) We apply recently developed phenomenological theory of polar liquids to calculate the repulsive pressure between two hydrophilic membranes at nm-distances. We find that the repulsion does...


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<li><a href='http://q-pharm.com/2009/12/ferro-electric-phase-transition-in-a-polar-liquid-and-the-nature-of-lambda-transition-in-supercooled-water-2/' rel='bookmark' title='Permanent Link: Ferro-electric phase transition in a polar liquid and the nature of \lambda-transition in supercooled water'>Ferro-electric phase transition in a polar liquid and the nature of \lambda-transition in supercooled water</a></li>
<li><a href='http://q-pharm.com/2008/08/ferro-electric-phase-transition-in-a-polar-liquid-and-the-nature-of-lambda-transition-in-supercooled-water/' rel='bookmark' title='Permanent Link: Ferro-electric phase transition in a polar liquid and the nature of lambda-transition in supercooled water'>Ferro-electric phase transition in a polar liquid and the nature of lambda-transition in supercooled water</a></li>
<li><a href='http://q-pharm.com/2008/09/spontaneous-polarization-of-a-polar-liquid-next-to-nano-scale-impurities/' rel='bookmark' title='Permanent Link: Spontaneous polarization of a polar liquid next to nano-scale impurities'>Spontaneous polarization of a polar liquid next to nano-scale impurities</a></li>
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</ol>

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