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  Selected Sites   (see also All Sites in this category)

  1. Chemistry Spreadsheet Calculator - James T. Parker
    A calculator designed to help teach high school students how to balance chemistry equations and then perform basic stoichiometry calculations. Includes a short tutorial. more>>

  2. Hypermedia Textbook for Grades 6-12 (MathMol) - NYU/ACF Scientific Visualization Laboratory
    Designed for middle school students, but also useful for students of high school chemistry. Introductory concepts: mass, weight, volume, density, scientific notation, our 3-dimensional world, VRML, geometry quiz, the geometry of 2 and 3 dimensions, and mathematical equations. A Model of Matter: structure of an atom, bonding of atoms, and motion of molecules. Structure and Properties of Important Molecules: water and ice, the element, carbon, simple carbon compounds, molecules of life, materials, and drugs. Appendix of Structures: water and ice, carbon, hydrocarbons, lipids, DNA, amino acids, sugars, photosynthetic pigments, drugs, and math structures. more>>

  3. MathMol - NYU/ACF Scientific Visualization Laboratory
    A starting point for those interested in molecular modeling, one of the fastest growing fields in science, from building and visualizing molecules to performing complex calculations on molecular systems. Using molecular modeling scientists will be better able to design new and more potent drugs against diseases such as Cancer, AIDS, and Arthritis. Short movies show the mathematics in molecular modeling, e.g.: 1) fullerene molecule; bond angle formed by 3 consecutive carbon atoms in a benzene ring; dihedral angle shown for the hexane molecule; equation E=kT where k is the slope of the line; relationship between coulombic energy and distance; torsion bond energy of a molecule modeled by a periodic function; ammonia molecule showing symmetry. See also K12 Activities. more>>


 

Mason error

 
component stack:   /library/branch.html
/library/dhandler
code stack:   /var/lib/mason/obj/library/branch.html:208
/usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Commands.pm:70
/var/lib/mason/obj/library/dhandler:90

debug info:   Debug file is '/var/lib/mason/debug/anon/12'.

raw_error





























raw error:
 






























error while executing /library/branch.html:
Server message number=1105 severity=17 state=4 line=1 text=Can't allocate space for object 'syslogs' in database 'catalog' because 'logsegment' segment is full/has no free extents. If you ran out of space in syslogs, dump the transaction log. Otherwise, use ALTER DATABASE or sp_extendsegment to increase size of the segment.
Statement=INSERT INTO keystorage ( keys ) VALUES ( '946;6888;4700;3892;7629;7018;4480;12573;63923;3344;11174;4078;4376;7738;12604;4473;787;4989;9192;1406;11829;4428;211;718;7260;4225;12373;12518;68523;6084;1987;7300;6392;5274;68756;4475;28;4746;6416;8009;67465;...
HTML::Mason::Interp::__ANON__('Server message number=1105 severity=17 state=4 line=1 text=Can\'...') called at /usr/lib/perl5/site_perl/5.6.0/Forum/Key.pm line 284
Forum::Key::store('chemistry', 'Forum::Key=HASH(0x8f583c4)') called at /var/lib/mason/obj/library/branch.html line 208
HTML::Mason::Commands::__ANON__('passed_args', 'HASH(0x8f054e0)', 'tree', 'topics', 'branch', 'chemistry') called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Component.pm line 131
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0x8f3f28c)', 'passed_args', 'HASH(0x8f054e0)', 'tree', 'topics', 'branch', 'chemistry') called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 653
require 0 called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 653
HTML::Mason::Request::comp('HTML::Mason::Request::ApacheHandler=HASH(0x8e43cd4)', '/library/branch.html', 'passed_args', 'HASH(0x8f054e0)', 'tree', 'topics', 'branch', 'chemistry') called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Commands.pm line 70
HTML::Mason::Commands::mc_comp('/library/branch.html', 'passed_args', 'HASH(0x8f054e0)', 'tree', 'topics', 'branch', 'chemistry') called at /var/lib/mason/obj/library/dhandler line 90
HTML::Mason::Commands::__ANON__('start_at', 1, 'num_to_see', 50, 'keyid', 38891301) called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Component.pm line 131
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0x8f05588)', 'HTML::Mason::Component::FileBased=HASH(0x8f05588)', 'HTML::Mason::Component::FileBased=HASH(0x8f05588)', 'start_at', 1, 'num_to_see', 50, 'keyid', ...) called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 653
require 0 called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 653
HTML::Mason::Request::comp('HTML::Mason::Request::ApacheHandler=HASH(0x8e43cd4)', 'HASH(0x8f46704)', 'HTML::Mason::Component::FileBased=HASH(0x8f05588)', 'start_at', 1, 'num_to_see', 50, 'keyid', ...) called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 159
require 0 called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 159
HTML::Mason::Request::exec('HTML::Mason::Request::ApacheHandler=HASH(0x8e43cd4)', '/library/topics/chemistry', 'start_at', 1, 'num_to_see', 50, 'keyid', 38891301) called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/ApacheHandler.pm line 914
HTML::Mason::ApacheHandler::handle_request_1('HTML::Mason::ApacheHandler=HASH(0x8de2bfc)', 'Apache=SCALAR(0x8e08388)', 'HTML::Mason::Request::ApacheHandler=HASH(0x8e43cd4)', 'HASH(0x8f46530)') called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/ApacheHandler.pm line 560
require 0 called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/ApacheHandler.pm line 560
HTML::Mason::ApacheHandler::handle_request('HTML::Mason::ApacheHandler=HASH(0x8de2bfc)', 'Apache=SCALAR(0x8e08388)') called at /etc/httpd/conf/handler.pl line 97
HTML::Mason::handler('Apache=SCALAR(0x8e08388)') called at /dev/null line 0
require 0 called at /dev/null line 0