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(1) MIT: New insights on fusion power

David Chandler, MIT News Office
December 3, 2008

Research carried out at MIT's Alcator C-Mod fusion reactor may have brought the promise of fusion as a future power source a bit closer to reality, though scientists caution that a practical fusion powerplant is still decades away.

Adapted from - http://web.mit.edu/newsoffice/2008/fusion-results-tt1203.html


(2)Disappearing superconductivity reappears -- in 2-D

Scientists studying a material that appeared to lose its ability to carry current with no resistance say new measurements reveal that the material is indeed a superconductor -- but only in two dimensions. Equally surprising, this new form of 2-D superconductivity emerges at a higher temperature than ordinary 3-D superconductivity in other compositions of the same material.

Adapted from - http://www.bnl.gov/bnlweb/pubaf/pr/PR_display.asp?prID=865

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Showing posts with label Physical chem. Show all posts
Showing posts with label Physical chem. Show all posts

November 29, 2008

Quantum States of Atoms and Molecules - Digital Book

Quantum States of Atoms and Molecules

Chemistry online Resources

Link - Read the Book,  its Free 

"Quantum States of Atoms and Molecules is an introduction to quantum mechanics as it relates to spectroscopy, the electronic structure of atoms and molecules, and molecular properties. A digital, living textbook, it provides opportunities not found in conventional textbooks—opportunities that allow students to develop skills in information processing, critical thinking or analytical reasoning, and problem solving that are so important for success.

In contrast to many quantum chemistry books, the relevant properties of atoms and molecules become part of the discussion immediately, and concepts are introduced at a concrete level and then generalized, and put in mathematical form at a later stage in the presentation. The goal is to establish the fundamental principles of quantum chemistry and their consequences in a rigorous way while not delaying the discussion of molecular properties until the end. This approach is based on the experience that a concrete verbal description paves the way for a more fundamental, mathematical approach.

The design goals of Quantum States are:

* Make the concepts and methodologies of quantum chemistry accessible and meaningful to all students.
* Develop an understanding of atomic and molecular properties in terms of quantum chemistry.
* Establish the fundamental principles of quantum chemistry and their consequences in a rigorous way while not delaying a discussion of molecular properties until the end.
* Encourage the development of information processing, critical-thinking, and problem-solving skills.
* Set the challenge for each assignment at a level that encourages the growth of critical-thinking and problem-solving skills, yet that can be achieved reasonably, though not always easily, by a student learning team facilitated by a master learner, the instructor.

Quantum States is suitable for a one-semester undergraduate or graduate course and can be part of a two-semester sequence in physical chemistry. It was developed with partial support from the National Science Foundation through grant NSF DUE #0127291.

A set of corresponding questions for student assessment is also available in the QBank collection of the JCE Digital Library"[1].

1.http://www.jce.divched.org/JCEDLib/LivTexts/pChem/JCE2005p1880_2LTXT/index.html

Analytical Inorganic Organic Physical

November 6, 2008

Virtual Computational Chemistry Laboratory

Virtual Computational Chemistry Laboratory

on-line software

Chemistry online Resources

Link - http://www.vcclab.org


"This site provides free on-line tools, which we hope you will find helpful in performing computational chemistry, ADME/T and chemoinformatics tasks including the building and visualisation of chemical structures, the calculation of molecular properties and the analysis of relationships between chemical structure and properties. All these tools are developed, provided and supported by the VCCLAB partners.

Please feel free to browse our site and take advantage of the various on-line cheminformatics services provided. However, the calculation algorithms are running on remote servers, communicating via the Internet, so we are unable to control the speed of access to these services. An overview of on-line WWW resources for Phys-Prop calculations is also available"[1].
1.http://www.vcclab.org/



Analytical Inorganic Organic Physical

October 30, 2008

Online SMILES Translator and Structure File Generator

Online SMILES Translator and Structure File Generator

Chemistry online Resources

Link - http://cactus.nci.nih.gov/services/translate/

Analytical Inorganic Organic Physical

October 26, 2008

NIST Chemistry WebBook - Physical Chemistry

NIST Chemistry WebBook - Physical Chemistry

Chemistry online Resources

Link - http://webbook.nist.gov

"The NIST Chemistry WebBook provides access to data compiled and distributed by NIST under the Standard Reference Data Program.

The NIST Chemistry WebBook contains:

  • Thermochemical data for over 7000 organic and small inorganic compounds:
    • Enthalpy of formation
    • Enthalpy of combustion
    • Heat capacity
    • Entropy
    • Phase transition enthalpies and temperatures
    • Vapor pressure
  • Reaction thermochemistry data for over 8000 reactions.
    • Enthalpy of reaction
    • Free energy of reaction
  • IR spectra for over 16,000 compounds.
  • Mass spectra for over 15,000 compounds.
  • UV/Vis spectra for over 1600 compounds.
  • Gas chromatography data for over 27,000 compounds.
  • Electronic and vibrational spectra for over 5000 compounds.
  • Constants of diatomic molecules (spectroscopic data) for over 600 compounds.
  • Ion energetics data for over 16,000 compounds:
    • Ionization energy
    • Appearance energy
    • Electron affinity
    • Proton affinity
    • Gas basicity
    • Cluster ion binding energies
  • Thermophysical property data for 74 fluids:
    • Density, specific volume
    • Heat capacity at constant pressure (Cp)
    • Heat capacity at constant volume (Cv)
    • Enthalpy
    • Internal energy
    • Entropy
    • Viscosity
    • Thermal conductivity
    • Joule-Thomson coefficient
    • Surface tension (saturation curve only)
    • Sound speed"[1]
    1.http://webbook.nist.gov/

Analytical Inorganic Organic Physical

Free Chemistry Hand Books

Hand Books

This site provides thermochemical, thermophysical, and ion energetics data compiled by NIST under the Standard Reference Data Program.


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