IR-Spektroskopie

Corollary 4.18 Exp Np L(ir; Ir)

{ 15 { codewords. If any of the strings supplied by P k fails a multilinearity test, then V accepts P 3?k 's claim about whether or not w 2 L. It remains to show how V can test equality of two functions that are both 1=4-close to multilinear polynomials in K n X 1 ; : : :; X n ]. This can also be done using a well-known fact about polynomials. Schwartz's Lemma Sc80]: Two distinct polynomials in...

A Combined Mid-IR/Near-IR Spectrometer

When analysts are faced with the decision of selecting either mid-IR (MIR) or near-IR (NIR) spectroscopy for materials characterization, the decision is usually based on the analytical, sampling, and/ or operational needs. For example, when the greatest analytical specificity is required or certain inorganic materials need to be measured, the choice favors MIR; whereas the need to keep an unsta...

Dypas2: ein Computerprogramm zur Simulation dynamischer PHIP-NMR-Spektroskopie auf Basis des Superoperatorformalismus

Die Detektionsgrenze der MR-Spektroskopie mittels intermolekularen Nullquantenkohärenzen in inhomogenen Magnetfeldern

Die Magnetresonanzspektroskopie (MRS) ermöglicht die Messung relativer Veränderungen oder sogar die absolute Quantifizierung von bestimmten Metaboliten im lebenden Organismus. Voraussetzung für hochwertige MR-Spektren ist eine hervorragende Homogenität des Hauptmagnetfeldes (B0). Feldverzerrungen kann man mit externen Shim-Spulen bis zu einem bestimmten Grad kompensieren und damit die von ihnen...

What Is an Ft-ir and an Ft-ir Spectrometer?

An FT-IR Spectrometer is an instrument which acquires broadband NIR to FIR spectra. Unlike a dispersive instrument, i.e. grating monochromator or spectrograph, an FT-IR Spectrometer collects all wavelengths simultaneously. This feature, called the Multiplex or Felgett Advantage, is discussed in detail on page 3. FT-IR Spectrometers are often simply called FT-IRs. But for the purists, an FT-IR (...