Spektroskopie und Chemometrie Neuigkeiten Wöchentlich #43, 2016

Chemometrics

SWIR region contains chemical spectral info. Chemometrics differentiate 4 sugars. Realtime spectral processing LINK


Near Infrared

Using advanced NIR sensors, our hygenic TS line measures fluid absorption for FoodandBeverage applications: LINK!

“NIR penetrates much further into samples and, unlike Raman, is unaffected by fluorescence.” | Env… LINK

Qualitätskontrolle während der Extrusion – Folie Fremdpolymeren NIRAnalyse Inspektionssystem LINK

Pre-grazing significantly boosts first cut silage quality | NIRanalycer NIRmachine via LINK


Infrared

Selective Weighted Least Squares Method for Fourier Transform Infrared Quantitative Analysis LINK

Multivariate Analysis of Hemicelluloses in Bleached Kraft Pulp Using Infrared Spectroscopy LINK


Hyperspectral

Combining hyperspectral and lidar is a great approach to identify & monitor invasive plants species… LINK


Environment

DETECTION OF CANNABIS PLANTS BY HYPER-SPECTRAL REMOTE SENSING MEANS LINK


Pharma

US FDA Purchases Transmission Raman for Quantitative Analysis of Tablets & Capsules – European Pharmaceutical Review LINK


Laboratory

“Washington State University (WSU) portable smartphone spectrometer laboratory detects cancer” LINK

Spectroscopy Outside the Lab: LINK


CalibrationModel.com

Spectroscopy and Chemometrics News 42, 2016 | NIRS Spectroscopic Chemometric Software LINK

Spektroskopie und Chemometrie Neuigkeiten Wöchentlich 42, 2016 | NIRS Spektroskopie Chemometrie Kalibration LINK

Spettroscopia e Chemiometria Weekly News 42, 2016 | NIRS Spettroscopia Chemiometria news LINK


Summary of the NIR Chemometric survey polls

Summary of the NIR Chemometric survey polls (as of end of Sept. 2013)

The interesting finding is that most of the answers fit the following pattern. The most companies that use NIR have one NIR Instrument and only one employee that is able to develop NIR calibrations. For that the most common off-the-shelf chemometrics program is used and spent 2 hours or over a month and therefore gets no calibration training about the complex topics like Chemometrics and NIR Spectroscopy or only once (introduction). The calibration maintenance ranges from never to 3 times a year. Interestingly, there was no one who uses portable NIR instruments. We continue our surveys, for the discovery of new trends. Conclusion Seeing this picture, we think that there is huge potential to improve the calibrations. Advanced knowledge can help individuals to build the calibrations with best practices and improve their models accuracy and reliability. Once the decision and investment in NIR technology is done, you should get the best out of your data, because this extra NIR performance can be given by calibration optimization. We offer this as an easy to use and independent service.

Neueste weiterentwickelte chemometrische Methoden

Sie suchen nach den neusten weiterentwickelten chemometrischen Methoden, um bessere NIR-Kalibrierungs Modelle zu erstellen? Methoden und Algorithmen wie:
  • Künstliche Neuronale Netze (KNN, ANN)
  • Allgemeine Regression Neural Networks (GR-NN)
  • RBF Neuronale Netze (RBF-NN)
  • Support Vector Machines (SVM)
  • Multiway Partial Least Squares (MPLS)
  • Orthogonale PLS (OPLS), (O-PLS), OPLS-AA, OPLS-ANN
  • R-PLS, UVE-PLS, Rüve-PLS, PLS LOCAL
  • Hierarchische Kernel Partial Least Squares (HKPLS)
  • Random Forest (RF)
  • usw.
und Daten-Vorverarbeitungs Methoden wie
  • Erweiterte Multiplikative Signal Correction (EMSC)
  • Orthogonale Signal Correction (OSC)
  • Dynamische orthogonale Projektion (DOP)
  • Fehlerbeseitigung durch orthogonale Subtraktion (EROS)
  • Externe Parameter Orthogonalisierung (EPA)
  • usw.
die z.T. erhältlich sind als Module für Software-Pakete wie Matlab, Octave, R-Project, usw. Warum viel Zeit und Geld investieren in neue Werkzeuge? Haben Sie es wirklich ausgiebig versucht, Ihre Kalibrierungen mit Standard-Methoden zu optimieren? Zu den chemometrischen Standard-Methoden gehören Partial Least Squares (PLS), Principal Component Regression (PCR) und multiple lineare Regression (MLR), diese sind verfügbar in nahezu allen chemometrischen Software-Paketen. Sind Sie sicher, dass Sie alle guten Regeln und Optimierungsmöglichkeiten versucht haben? Verwenden Sie einfach die üblichen kompatiblen Standard-Methoden, wir sind auf die Optimierung und Erstellung von NIR-Kalibrierungen spezialisiert, lassen Sie uns helfen, kontaktieren Sie uns!