This is the recently installed nuclear magnetic resonance (NMR) instrument in the university.
The actual instrument is the round thing in the middle, the rectangular machine next to it is its processor.
The black part on top-middle of the instrument is where you insert the NMR tube for sample analysis. (and that's why the orange step is placed there)
I won't go into the details of how NMR works, I'll leave that to Wikipedia.
Just to let you know the NMR spectroscopy is an important tool for organic chemists to determine a compound's structure.
For organic compound structure determination, a IR spectra, MS spectra and NMR spectra will be needed.
Tools that organic chemists use to determine molecular structures:
Mass Spectrometry - molecular size and formula
Infrared Spectroscopy - functional group present
Ultraviolet Spectroscopy - conjugated pi electro system present
Nuclear Magnetic Resonance Spectroscopy - map of carbon-hydrogen framework
Further reading:
星期三, 9月 29, 2010
星期三, 6月 02, 2010
The First Successful Creation of Synthetic Life
With 15 years of work, Craig Venter and his team has successfully created the first self-replicating synthetic bacterial cell. The bacterial cell, Mycoplasma mycoides JCVI-syn1.0 contains 1.08 million base pair and it is full functioning. This is truly a historical human achievement and a giant breakthrough in molecular biology.
Figure 1: Dividing M. mycoides JCVI-syn1.0 under electron microscope. (Source)
Further Information
- http://www.jcvi.org/cms/research/projects/first-self-replicating-synthetic-bacterial-cell/overview/
- Full text pdf of the research article "Creation of a Bacterial Cell Controlled by a Chemically Synthesized Genome":
http://www.sciencemag.org/cgi/rapidpdf/science.1190719v1.pdf
星期一, 5月 24, 2010
Need A New Organ?
Just grow one! This is not a science fiction.
No transplant rejection. No lifelong taking immunosuppressant drugs. No cutting open the poor living donor's body.
I wonder if they can grow some brains for those who haven't got one.
No transplant rejection. No lifelong taking immunosuppressant drugs. No cutting open the poor living donor's body.
I wonder if they can grow some brains for those who haven't got one.
星期五, 11月 13, 2009
不可小看一隻小鳥的力量!
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