نتایج جستجو برای: ir spectra
تعداد نتایج: 171670 فیلتر نتایج به سال:
We report the first observation of infrared (IR) and mass spectra of neutral, aliphatic amino acid clusters: the example presented herein is for (valine)(n), n = 2-5. The clusters are generated in a supersonic expansion and their IR spectra are recorded in various fragment and (valine)(n-1)H(+) (n = 2-5) mass channels. The ions are created by single photon ionization with a VUV laser at 118 nm ...
A new concept of designing and synthesizing highly dispersed ionic liquids was developed through physical confinement or encapsulation of them into silica gel matrix with sol-gel process. A series of silica gel confined ionic liquids were synthesized through this process and characterized by diffuse-reflectance infrared Fourier transform spectroscopy (DRIFTS) and FTRaman analysis, and abnormal ...
The gas-phase conformations of protonated uridine, [Urd+H](+), and its modified form, protonated 2'-deoxyuridine, [dUrd+H](+), generated by electrospray ionization are investigated using infrared multiple photon dissociation (IRMPD) action spectroscopy techniques. IRMPD action spectra of [Urd+H](+) and [dUrd+H](+) are measured over the IR fingerprint and hydrogen-stretching regions. [Urd+H](+) ...
We present the mid-infrared spectra obtained with the Spitzer IRS for 52 sources, selected as infrared luminous, zk1 candidates in the Extragalactic First Look Survey. The sample selection criteria are f24 mk 0:9 mJy, f (24 m)/ f (8 m)k 3:16, and f (24 m)/ f (0:7 m)k10. Of the 52 spectra, 47 (90%) produced measurable redshifts based solely on the mid-IR spectral features, with 35/47 (74%) at 1:...
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