| Author | Message | ||
     Suresh kumar. B (Sureshkumar) |
Hello Everybody iam working on Nir Instruments now i want to verify the pls-1 software wether it is working properly of not and another thing is can anyone explain Factors, rank, loading in pls (clear def.) pl.suggest any book/ journal reg. Partial Least Sqare regression analysis | ||
| Gary Ritchie |
Suresh, You are asking a loaded question, so I am not sure if you mean in general as for instructive purposes, or for clarification at your current knowledge level. Without sounding offensive (and I appologize if any is taken), have you registered for any upcoming short courses on NIR. The Eastern Analytical Symposium (EAS 2001) will be happening soon in Atlantic City, New Jersey, USA (Sept 30- October 4, 2001). If you are not planning to go to EAS this year, how about contacting Tony Davies, who may be able to direct you to short courses close to your location. EAS can be found at www.eas.org for info on short courses and Tony can be contacted at [email protected]. I hope this helps. Gary Ritchie | ||
| Howard Mark (Hlmark) |
Suresh - A short course is probably in order, as Gary recommends, although if you want to know more about PLS specifically rather than NIR in general and how PLS is used with NIR analysis, then a course about NIR may not be the best choice. There are several short courses given that deal specifically with chemometric analysis of data, rather then with NIR. Some of those are also given at EAS, so you have a choice there. As for books, there are many, at all levels from very elementary to very advanced. The best elementary introduction I know is Richard Kramer's "Chemometric Techniques for Quantitative Analysis" published by Marcel Dekker. A the intermediate level I recommend the book by K.R. Beebe, R.J. Pell and M.B. Seasholtz, "Chemoemtrics - a Practical Guide", John Wiley and Sons. At a level between intermediate and advanced is the book by D.L. Massart, B.G.M. VandeGinste, et al, "Chemometrics: a Textbook", published by Elsevier Publishing. For an advanced book, there are at least two that are very good: Harald Martens' and Tormod Naes' "Multivariate Calibration", also published by Wiley, although I believe it may be out of print. The other one at an advanced level is the one by M.A. Sharaf, D.L. Illman and B.R. Kowalski, "Chemometrics", also published by WIley. Howard | ||
| Donald Burns |
Suresh, Howard Mark wouldn't mention his own book, so I will. "Principles and Practice of Spectroscopic Calibration" published by John Wiley & Sons. It was first published in 1991, but is still a valuable addition to one's library. | ||
| hlmark |
Suresh - Don is a good friend and I appreciate his thinking of me. But he forgot one key point: while my book is very good for certain subjects, it does not include coverage of PLS!! HOward | ||
| Surinder Kumar Angra |
We are intrested in knowing NIR Insrument for Non Distructine testing of fruits and other horticulture products & source of soft wares being used in these equipment for quantatative analysis. | ||
| Surinder Kumar Angra |
Dear Sir, I am happy to note down this facility to discuss about various problems of NIR spectroscopy. Our group is engaged in elemental analysis & in this regard we have Perkin Elmer AAS & Jobin Yvon ICP-AES. Now we are planning to expand our activites to agriculture & horticulture (toxin in agricultural product & quality of the fruits etc) I would appreciate if you can give us your comments that NIR can be solution to these problems. If yes then which company is providing the instrument? Recently I came across a heading of an article "Seeing through layer of fruits and other horticulture product" by NIR technique, a non-destructive technique for quality assurance and testing of the fruit. I would appreciate if you can give more details of the technique &also some addresses that can supply such equipment to us. | ||
| hlmark |
Surinder - What a hot potato!! Too bad you did not ask this a month ago, then we could have just recommended that you go to Pittcon and talk to the NIR companies who were exhibiting there. According to the "company finder" listings, there were over 30 companies that were listed under the category of "Near Infrared". I hesitate to make list here, because I don't want to make anybody angry at me be leaving them off a list, and I couldn't possibly include them all by memory. However, you should know that NIR measurement of fruits and vegetables was actually how Karl Norris, the acknowledged "grandfather" of modern NIR analysis, first developed this technique, back in the late 1960's, and the technology has developed since then. But as far as finding companies, your best bet might be to do a web search, using "NIR" of "Near Infrared" as your search term, and see what you find. Howard \o/ /_\ | ||
| Bruce H. Campbell (Campclan) |
Suriner, You didn't state what quality of fruit you are wanting to monitor. However, to gain an understanding of what has been done by others, I would suggest obtaining the NIR bibliography which is available through the Council for Near Infrared Spectroscopy (CNIRS). You can go to the CNIRS home page for further information. Also, for companies, there are many listed in the equipment section of this site. Bruce |