tag:blogger.com,1999:blog-7908026809795529695Fri, 01 Nov 2024 08:31:11 +0000SciBioAcademicSciPopular(Dutch)SciSpaceArtCultureXtallization & Xtallography, Science, Politics, Arts & Culture, Musichttp://xtalwebary.blogspot.com/noreply@blogger.com (Arie Schouten)Blogger25125tag:blogger.com,1999:blog-7908026809795529695.post-157031400718521749Thu, 12 Apr 2012 22:17:00 +00002012-04-13T00:17:33.905+02:00SciPopularMajorana fermions.Dutch researchers discovered the predicted Majorana particles (quasiparticles that are their own antiparticles). Computer technology based on quantum bits (qubits, 0 AND 1 at the same time) i.s.o. bits (0 or 1) will result in very fast computers, which in turn will speed up development of e.g. medicins. Fermions vs. Bosons: "Particles and quasiparticles comehttp://xtalwebary.blogspot.com/2012/04/majorana-particles.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-2407121011395570864Wed, 05 Oct 2011 21:23:00 +00002011-10-07T01:04:00.690+02:00SciPopularNobel Prize Chemistry 2011. Crystals of golden proportions: Daniel Shechtman received the 2011 Nobel Prize in Chemistry for his discovery of quasicrystals, perfectly ordered materials that never repeat themselves.  The X-ray diffraction pattern reflects the atom positions in a crystal. "It's all about symmetry". The Discovery of Quasicrystals: The atoms in the crystal in front of http://xtalwebary.blogspot.com/2011/10/nobelprizechemistry.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-3344183854627624489Wed, 14 Sep 2011 22:06:00 +00002011-09-15T10:17:23.391+02:00SciPopular"The Crystal's Cave", a Crystal Palace.  "The Crystal's Cave" or "Giant Crystal Cave" is a cave connected to the Naica mine in Mexico. Geologist Juan Manuel García-Ruiz of Granada's University calls this cave with stunning crystals "the Sistine Chapel of crystals". The cave at a depth of 300 m is extremely hot with air temperatures reaching up to 58 °C with 90 to 99 percent humidity. http://xtalwebary.blogspot.com/2011/09/crystal-cave-palace.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-33529544189401029Fri, 10 Jun 2011 20:38:00 +00002011-08-13T17:41:25.812+02:00SciSpaceStrings and branes. 'M-Theory' is the name of the unknown theory of everything which would combine all five Superstring theories and the Supergravity at 11 dimensions together. It's not a completed theory but rather an approach for producing one. For me it's fascinating to read about (super)strings, (super)gravity, quarks, fermions/bosons, worldline/screens, (mem)branes, curled-up http://xtalwebary.blogspot.com/2011/06/strings-and-branes.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-248002355749728622Mon, 07 Mar 2011 23:37:00 +00002011-03-10T00:41:42.880+01:00SciBioSciPopularSciSpaceMolecular impressions. Origin of life Stellar nursery: Molecular clouds in the Universe, vast assemblages of molecular gas with masses of 104–106 times the mass of the sun 'Spaceballs' (NU.nl) Stars reveal carbon 'spaceballs': largest molecules ever seen in space, in a cloud of cosmic dust surrounding a distant star Fullerene or Buckyball (carbon molecule) 10 nm, 200 http://xtalwebary.blogspot.com/2011/03/molecular-impressions_08.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-1832744505880603998Wed, 09 Feb 2011 00:18:00 +00002011-03-08T12:36:59.277+01:00(Dutch)SciPopularNL Vikingen gebruikten zonnestenen als kompas. Calciet (Ijslandspaat) Waarschijnlijk met behulp van stenen, waarmee de stand van de zon kon worden bepaald, waren de Vikingen in staat om op zee te navigeren. Doorschijnende kristallen en mineralen zoals calciet (zie afbeelding) zouden daarvoor kunnen zijn gebruikt als zogenaamde zonnestenen. Het moet daarmee mogelijk zijn geweest om http://xtalwebary.blogspot.com/2011/02/vikingen-en-kristallen.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-3068170987916184421Thu, 03 Feb 2011 00:27:00 +00002011-02-03T22:42:06.614+01:00SciPopularLateral Thinking. The concept of lateral thinking is a way of thinking to solve a problem through an unconventional, indirect and creative approach. It can be characterized as horizontal thinking opposite to vertical thinking. In principle, lateral thinking is based on ordening existing information to generate new information. Problem solving using lateral thinking is not straightforward. http://xtalwebary.blogspot.com/2011/02/lateral-thinking.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-4118565274169788088Mon, 31 Jan 2011 00:08:00 +00002011-02-03T10:34:57.241+01:00SciPopularSerendipity, fortunate discoveries by accident.   Serendipity is making fortunate discoveries by accident. Especially when one is looking for something unrelated, these lucky events can occur. In our daily life, sometimes we come across fortunate findings that makes us wonder. Usually, we phrase this as coincidence. Also in Physics and Science, in particular in fields as pharmacology http://xtalwebary.blogspot.com/2011/01/serendipity.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-9048352101182569910Thu, 13 Jan 2011 21:10:00 +00002011-03-10T00:19:34.889+01:00(Dutch)SciBioNL Dopamine. Waarom een blogpost over dopamine? De laatste tijd wordt er steeds meer bericht over experimenten waarbij dopamine een belangrijke rol lijkt te spelen. Zo blijkt luisteren naar muziek de aanmaak van deze genotstof in het brein te kunnen stimuleren. Een ander onderzoek toonde aan dat als er 'Liefde' in het spel is, er veel aktiviteit aanwezig is in de zogenaamde http://xtalwebary.blogspot.com/2011/01/dopamine.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-5480483112697497760Sun, 09 Jan 2011 15:18:00 +00002011-09-18T14:37:39.747+02:00AcademicSciBioIntroduction to Autophagy.   1. Autophagy is a lysosomal degradation pathway that is essential for survival, differentiation, development, and homeostasis. Autophagy principally serves an adaptive role to protect organisms against diverse pathologies, including infections, cancer, neurodegeneration, aging, and heart disease. However, in certain experimental disease settings, the http://xtalwebary.blogspot.com/2011/01/autophagy.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-7741916366612922221Sat, 08 Jan 2011 17:59:00 +00002011-04-06T23:02:22.260+02:00AcademicSciBioMembrane proteins. Cell membrane A membrane protein is a protein molecule that is attached to, or associated with the membrane of a cell or an organelle. More than half of all proteins interact withmembranes.  Illustration of a Eukaryotic cell membrane Biological membranes consist of a phospholipid bilayer and a variety of proteins that accomplish vital biological functions. http://xtalwebary.blogspot.com/2011/01/membrane-proteins.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-5679367756780225742Wed, 29 Dec 2010 23:23:00 +00002011-01-12T12:47:37.131+01:00(Dutch)SciSpaceNL Zwarte gaten. Zwart gat: gebied met zo veel zwaartekracht dat alles in de buurt erin valt (gat) terwijl er zelfs geen licht uit kan ontsnappen (zwart). 15 Weetjes over zwarte gaten (bron: Twursus) 1. Zwart gat: gebied met zo veel zwaartekracht dat alles in de buurt erin valt (gat) terwijl er zelfs geen licht uit kan ontsnappen (zwart). 2. Michell en Laplace opperden eind 18e eeuw http://xtalwebary.blogspot.com/2010/12/zwarte-gaten.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-7278338531058802322Tue, 28 Dec 2010 21:58:00 +00002011-01-10T21:48:07.810+01:00(Dutch)SciBioNL 'Uiterlijke eigenschappen niet alleen bepaald door genen' (NU.nl)AMSTERDAM 28 december 2010 – Amerikaanse wetenschappers hebben een biologisch mechanisme ontdekt dat er indirect voor zorgt dat genetisch identieke organismen toch verschillende eigenschappen kunnen ontwikkelen.  Een specifiek type RNA zorgt er in combinatie met een veel voorkomend eiwit (Hsp-90) voor dat http://xtalwebary.blogspot.com/2010/12/hsp-90-en-rna.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-4069440855557783227Mon, 20 Dec 2010 11:54:00 +00002011-01-12T12:59:35.253+01:00CultureCity2Enjoy, Vliegwijzer.com & 10Biggest. City2Enjoy  is founded in 2009 by two Dutch guys with a passion for travel. "Our goal is to provide all the information, in an exceptional clarifying manner, one needs for a great city trip." By picking your "City 2 Enjoy" from the map, major tourist attractions and top10 things you must see and do during city trips in Europe are http://xtalwebary.blogspot.com/2010/12/city2enjoy_20.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-2331316020547484564Mon, 13 Dec 2010 22:31:00 +00002011-01-10T21:46:04.230+01:00SciSpaceFlashing galaxies, a Universe tour. The American space agency NASA created a Universe tour of all known galaxies in the observable universe. Images from the Hubble and other sources were used, placing each of them in 3D space in relation to our viewing point. Keep in mind that this is only the small fraction of galaxies we have observed with telescopes, there are far far more out there in the http://xtalwebary.blogspot.com/2010/12/sterrenstelsels.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-3468067161376877021Sat, 04 Dec 2010 14:20:00 +00002011-01-10T22:00:42.008+01:00(Dutch)SciBioSciSpaceNL NASA kondigt bevinding over buitenaards leven aan (NU.nl).  'de DNA wenteltrap'  AMSTERDAM 30 november 2010 - De Amerikaanse ruimtevaartorganisatie NASA beweert een bevinding te hebben gedaan die van belang is voor de zoektocht naar buitenaards leven. Waarschijnlijk gaat het echter niet om de ontdekking van een levensvorm op een andere planeet. Links: NASA-homepage, http://xtalwebary.blogspot.com/2010/12/nasa-dwaling.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-5574687766768931353Sat, 06 Nov 2010 19:24:00 +00002011-01-25T12:18:34.299+01:00(Dutch)ArtCultureNL De Herenclub. De Herenclub (copyright NU&toen) Het exquise eetclubje afgebeeld op bovenstaand schilderij telt inmiddels wat minder tafelgenoten. Wie zijn er nog over van deze vriendenclub? Voor zover ik kan nagaan: Adriaan van Dis, Marcel van Dam, medeoprichter van D66 Hans Gruijters, Veltman, Cees Nooteboom, Gerrit Komrij, musicus Reinbert de Leeuw, kunstenaar Jeroen http://xtalwebary.blogspot.com/2010/11/mulisch-herenclub_06.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-1745660394354221210Wed, 03 Nov 2010 13:27:00 +00002011-01-10T21:53:51.996+01:00ArtFavourite Painters/Drawers. M.C. Escher, An(s) Markus, Salvador Dali, Carel Willink, Michelangelo M.C. Escher (Dutch) In crystallography, a crystal structure is a unique 3D arrangement of atoms or molecules in a crystal. This arrangement is mainly dictated by symmetry. In this respect, symmetry phenomena are very intriguing for crystallographers. Escher was fascinated by symmetry, http://xtalwebary.blogspot.com/2010/11/favourite-paintings.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-416488204749047206Mon, 01 Nov 2010 11:00:00 +00002011-01-10T21:49:18.504+01:00ArtSciBio http://xtalwebary.blogspot.com/2010/12/videofavs.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-2055027356171842432Thu, 28 Oct 2010 11:06:00 +00002011-01-10T21:49:44.679+01:00SciBioAnimations of the Inner Life of the Cell. These YouTube video's are really fascinating.  "Nuclei, proteins and lipids move with bug-like authority, slithering, gliding and twisting through 3D space. All of those things that you see in the animation are going on in every one of your cells in your body all the time” 1: Wikipedia-TheInnerLifeOfTheCell   2: http://xtalwebary.blogspot.com/2010/10/inner-life-of-cell.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-6693720113568503094Tue, 26 Oct 2010 12:38:00 +00002011-01-10T21:50:07.512+01:00AcademicCultureSciBioICCBM13-Dublin. 13th International Conference on the Crystallization of Biomolecular Macromolecules at Trinity College, Dublin, Ireland (September 2010). Motto: 'Enjoy, Learn, Network'.  ICCBM13 focused on challenging systems to include macromolecular complexes and membrane proteins with an emphasis on novel practical as well as mechanistic aspects of crystallogenesis.  The http://xtalwebary.blogspot.com/2010/10/iccbm13-dublin.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-6229511324896692573Tue, 26 Oct 2010 09:39:00 +00002012-08-08T20:54:22.470+02:00AcademicSciBio Selection of publications: Protein X-ray structures (with pdb accession codes) PDB Structural Database birefringent protein crystals protein structures can be elucidated using X-ray diffraction data from protein crystals recent structure: GAPR-1 complex (4AIW) GAPR-1n complex with lipid-binding inhibitor I6P http://xtalwebary.blogspot.com/2010/10/published-protein-x-ray-structures.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-1911310086478561293Tue, 26 Oct 2010 09:31:00 +00002016-01-25T14:32:52.827+01:00AcademicSciBio Publication list. CSC     : Publications 1996-2007 (Crystal and Structural Chemistry) NARCIS: Publications 2002-2009 (National Academic Research and Collaborations Information System) all publications 1983-2016 (see below) [ 1.] Bouwstra, J.A., Schouten, A. & Kroon, J. (1983). Acta Cryst. C39, 1121-1123. Structural Studies of the System trans-Azobenzene/http://xtalwebary.blogspot.com/2010/11/list.htmlnoreply@blogger.com (Arie Schouten)tag:blogger.com,1999:blog-7908026809795529695.post-1571258600839924485Mon, 25 Oct 2010 15:00:00 +00002011-09-05T17:02:12.561+02:00AcademicSciBioImmune response by the Complement System. (Research Highlights, Piet Gros, CSC, Utrecht University, Nov. 2009) http://www.crystal.chem.uu.nl/~gros/complement.html   central components of the Alternative Pathway of complement activation  C3 convertase activity and specificity (Wu et al.) Movies: Classical Pathway Complement System     Factor B  &nbsphttp://xtalwebary.blogspot.com/2010/11/complement.htmlnoreply@blogger.com (Arie Schouten)0tag:blogger.com,1999:blog-7908026809795529695.post-2399539150421952396Mon, 25 Oct 2010 13:54:00 +00002011-01-25T12:32:26.648+01:00AcademicSciBioOctober 25th: Weblog "Xtal-WebAry" launched. However, still under construction. By the way, Xtal stands for Crystal. [1] Crystallogenesis: Protein Xtallization in particular and Xtallography in general are work-related topics that have my main interest. Universiteit Utrecht: Faculty of Science, Utrecht University (The Netherlands). The Bijvoet Center for Biomolecular Research aims to gain http://xtalwebary.blogspot.com/2010/10/weblog-launched.htmlnoreply@blogger.com (Arie Schouten)1