| Author | Message | ||
     venkatarman (venkynir) Senior Member Username: venkynir Post Number: 83 Registered: 3-2004 |
Corection : Dear Mui ; Thanks for pointing out the correction in year .Kindly go through slides .First slide was "Evlouation of R&D in NIR Instrumentation by CEERI chennai Center "and findings(paper ) . I want to point " has good relation with the ICNIRS" only .I know you are one of the Asian reprsentaitve for ICNIRS.My thrust is to link all NIR work group in NIRS in India. I hope that MUI will accept that we have submited our R&D work report for recogniszation in ANC. | ||
| venkatarman (venkynir) Senior Member Username: venkynir Post Number: 82 Registered: 3-2004 |
Dear Mui Thanks for pointing out the correction.Kindly go through slides .First slide was "Evlouation of R&D in NIR Instrumentation by CEERI chennai Center "and findings(paper ) . I want to point " has good relation with the ICNIRS" only .I know your the Asian reprsentaitve for ICNIRS.My thrust is to link all NIR work group in NIRS in India . | ||
| Sirinnapa Saranwong (mui) New member Username: mui Post Number: 2 Registered: 10-2006 |
Hello, This is Kawano and Mui from Asian NIR Consortium and NIR2009. Just a small correction for Venky. Venky, you did make a technical presentation related to sample and time optimization for selective multiconstituent analyses at our conference last year called "The First Asian NIR Symposium" or the "ANS2008". The meeting was co-orgazined by the Asian NIR Consortium and the Japan Council of NIRS. The Asian NIR Consortium is an independent organization, but has good relation with the ICNIRS. | ||
| venkatarman (venkynir) Senior Member Username: venkynir Post Number: 81 Registered: 3-2004 |
Dear Hlmarkanmd Dr.Bala of India . I have seen the messgae of Dr. Bala and happy to know that his working in the area of NIR in Biomedical Electrionics .Already alot work is going on this area in and around the world. After submiting and presesnting to NIR work Groups in ANS 2009 at Tsukuba Japan "Evlouation of R&D in NIR Instrumentation by CEERI chennai Center " to Asian NIR consrotium which works under ICNIRS , the centre (CEERI) invitied to be nodal centre in India. I hope within week of time we are expecting letter from Chairpersson of ANC. We are Govt.Of India R&D orgainzation working in the field of NIRS more than a deacade. We have also presented a paper on "ANS 2009". We welcome Dr.Bala join with us do the good things through NIRS applicaiton to Indian communtity . I hope Halmark will agree with me and support my view.I request Dr.Bala to contact us to strengthen NIR acitvity in India .It will helpful and meets both ends. | ||
| Howard Mark (hlmark) Senior Member Username: hlmark Post Number: 225 Registered: 9-2001 |
Dear Dr. Balasubramanian - I applaud your initiative, and wish you the best of luck in your future efforts to extend the reach and success of near infrared spectroscopy as a discipline. I would assume that your new NIR society is already active in sponsoring local meetings, facilitating interchange of information among Indian NIR scientists, etc. As far as increasing your "recognition", I'm not sure what I can do. Other organizations, both those involved in NIR and in general, get recognition for the efforts they make and the successes they achieve. The only advice I can think of is to suggest that you contact other organizations around the world, that are active in promoting NIR in their various ways. The two major organizations currently active are the Council for NIR Spectroscopy (CNIRS) and the International Committee for Near Infrared Spectroscopy (ICNIRS). You can find more information about them on their respective web sites: http://www.cnirs.org (for the CNIRS) and http://www.icnirs.org (for the ICNIRS). You can contact members of those other organizations, and perhaps think of ways you can help them with their efforts, and then they may also be able to help you with your efforts. One of the major activities of each of the two organizations I mentioned is to sponsor and organize an international meeting every two years, with the two organizations having their meetings in alternating years. ICNIRS is sponsoring a meeting coming up later this year, I believe in Thailand; there should be information about that on the ICNIRS web site (select ICNIRS Conferences => Next Conference). You might want to contact the two organizations to see how you can help them with their efforts, either personally or on behalf of your new NIR Society. After all, the best way to get recognition from people is to work with them, and have them become familiar with you and your capabilities. You can also become familiar with (and to) the people involved simply by attending the meeting, which would be a valuable experience not only technically, but also socially and personally. In general, the people I know who are the organizers of the meetings are a very friendly group, and glad to help out a newcomer. Maybe you can come up with ideas for future expansions of the activities for not only your Society, but also for the current societies, and think of ways the various ones can interact for positive effects. \o/ /_\ | ||
| Dr.K.Balasubramanian (drkbala) Advanced Member Username: drkbala Post Number: 24 Registered: 9-2006 |
NIR in Biomedical Elctronics is the future.I am trying to put Cancer detection,Cells and what not.For those who should get good approach would have the entire range of research available. | ||
| Dr.K.Balasubramanian (drkbala) Advanced Member Username: drkbala Post Number: 23 Registered: 9-2006 |
Dear Dr.Howard Mark, I have formed NIR Society of India.I req your Help from NIRS for Recognition.We would like the organisation to be uplifted.Pl help. | ||
| David von Boisman (david_von_boisman) Junior Member Username: david_von_boisman Post Number: 8 Registered: 2-2006 |
Hi Venky, its generally recommended that edible oils be scanned at a controlled temprature - that is, ideally in some sort of heated chamber with a regulated temperature. There are several reasons for that, one is that some fractions of the oil may be solid or semi-solid at room temperature. Anoter is, that without temperature control, the calibration would have to be stabilized for temperature - you would have to run a lot of samples at different temperature to make it stable within such a large temperature range. | ||
| Howard Mark (hlmark) Senior Member Username: hlmark Post Number: 212 Registered: 9-2001 |
Jerry & Venky - I was just reminded about a book that either or both of you might find useful: "Pharmaceutical and Medical Applications of Near Infrared Spectroscopy" by E. Ciurczak and J. Drennen; Marcel Dekker (now CRC press) (2002). \o/ /_\ | ||
| Howard Mark (hlmark) Senior Member Username: hlmark Post Number: 211 Registered: 9-2001 |
Venky - most of the work with temperature that I'm aware of has been on water and on -OH. Those exhibit relatively large shifts because of changes in hydrogen bonding. I don't know if there's been much work on wavelength shifts in situations where hydrogen bonding was not involved or unimportant. I think you should do a good a good literature search to see what work has been done on that. I think you could even publish a review article (say, in Spectroscopy or in Applied Spectroscopy, if not in JNIRS) if you find something. Such a review article would definitely be a worthwhile addition to the NIR literature. \o/ /_\ | ||
| venkatarman (venkynir) Senior Member Username: venkynir Post Number: 74 Registered: 3-2004 |
Dear Howard Mark; Good message/suggesstion for the New year!. Have done any experiment effects of NIR absorbance with tempeature .Say the liquid here is the edibel oil at 45 deg.c to 25 deg.c. I know that a tempeature there is shift in absorbance related in sin angle format .Is there any thing like !.Because the effect of spectral shift in carboxyal groups with tempeature with repect to FFA and PV in food oils. | ||
| Howard Mark (hlmark) Senior Member Username: hlmark Post Number: 209 Registered: 9-2001 |
Jerry - Happy New Year!! I don't know who's telling you these things, but here's a simple experiment you can do: take a flashlight and shine it through your fingers. Then come back and tell us if the light didn't penetrate. Penetration depends on two factors: scattering and absorption. Short wavelengths are more highly scattered than long ones. Nevertheless they can still penetrate fairly large distances into a scattering material, depending on the absorbance; if the absorbance is low enough, they can still make it through. Absorbance is more complicated than scattering. It depends on the molecular structure of the material. A somewhat oversimplified description is that molecules absorb light at those wavelengths where the vibrational frequencies of the molecules match the frequencies of the light. I suggest you read a good book on NIR, and also one on the optics of diffuse materials. There are several good NIR books around, and Don Dahm has just written one with the latest work on diffuse scattering: "Intepreting Diffuse Reflectance and Transmittance" \o/ /_\ | ||
| Jerry Jin (jcg2000) New member Username: jcg2000 Post Number: 1 Registered: 1-2009 |
The first post in 2009! I am a newbie in tissue optics. I have a few questions about NIR application to tissue oxygenation monitoring. People in tissue optics seem to agree that NIR spectra of hemoglobin and myoglobin are indistinguishable. My understanding is that hemoglobin and myoglobin have distinct structure (they do share a hemo group) and the chemical structure difference entails distinct NIR spectra. The people in tissue optics also claim that visible light (450-700nm) penetrates tissue only short distance because it is strongly attenuated by various tissue components, however NIR (700-1100nm)photos are capable of deeper peneration (several centimeters and more), even through bone. My question is: does NIR goes that deep into human tissue? It seems contrary to what I learned in spectroscopy: longer wavelength travels shorter (when wavelength is smaller than medium particle). Can anyone familiar with tissue optics help clarify? |