Zobrazeno 51 - 60
of 116
pro vyhledávání: '"785"'
Publikováno v:
Applied spectroscopy. 71(11)
A high-throughput Raman chemical imaging method was developed for direct inspection of benzoyl peroxide (BPO) mixed in wheat flour. A 5 W, 785 nm line laser (240 mm long and 1 mm wide) was used as a Raman excitation source in a push-broom Raman imagi
Publikováno v:
Applied Spectroscopy. 68:692-695
A line-scan hyperspectral system was developed to enable Raman chemical imaging for large sample areas. A custom-designed 785 nm line laser based on a scanning mirror serves as an excitation source. A 45° dichroic beam splitter reflects the laser li
Autor:
Anup Sharma, Aschalew Kassu, J. Boateng, Carlton Farley, Nayana Bose, Armitra Jackson-Davis, Paul Ruffin
Publikováno v:
Applied spectroscopy. 71(6)
A short distance standoff Raman technique is demonstrated for detecting economically motivated adulteration (EMA) in extra virgin olive oil (EVOO). Using a portable Raman spectrometer operating with a 785 nm laser and a 2-in. refracting telescope, ad
Autor:
Carolyn S. Brauer, Timothy J. Johnson, Louis Wasserzug, Rick Cox, Christopher Ball, Jeffrey Barber, Yin-Fong Su, Robert Steinke, Patricia McDaniel, James C. Weatherall, Barry T. Smith
Publikováno v:
Applied Spectroscopy. 67:149-157
Raman spectral data collected with high-resolution laboratory spectrometers are processed into a format suitable for importing as a user library on a 1064 nm DeltaNu first generation, field-deployable spectrometer prototype. The two laboratory system
Publikováno v:
Applied Spectroscopy. 66:151-156
The application of in situ Raman spectroscopy at small scale (maximum 80 mL) during the development of a manufacturing process is disclosed. The reaction was run in aqueous solution between ambient and 100 °C. Raman spectroscopy has proven to be a v
Autor:
David B. Damiano, Kimberley A. Frederick, Lindsey A. Tonge, Kathryn Y. Noonan, Owen S. Fenton
Publikováno v:
Applied Spectroscopy. 63:742-747
The ability to accurately and noninvasively analyze illicit drugs is important for criminal investigations and prosecution. Current methods involve significant sample pretreatment and most are destructive. The goal of this work is to develop a method
Publikováno v:
Applied Spectroscopy. 62:575-582
A common goal of most Raman spectroscopists is the acquisition of clear Raman spectra in short integration times. It is paramount, then, that the hardware used in a Raman system be optimized for throughput, signal-to-noise ratio, and resolution. To t
Autor:
Katherine J. Wurden, E. Bruce Orler, Thomas J. Flaherty, David A. Langlois, Debra A. Wrobleski, Darren L. Williams, James C. Timmons
Publikováno v:
Applied Spectroscopy. 61:608-612
The spectral signatures of nitro attack of the aromatic portion of thermoplastic urethanes (TPU) were determined. Eight fragment molecules were synthesized that represent the nitrated and pristine methylenediphenyl section common to many TPUs. Infrar
Autor:
Róża Starczak, Jolanta Was-Gubala
Publikováno v:
Applied spectroscopy. 69(2)
Presented in this paper is an assessment of the applicability of Raman spectroscopy and microspectrophotometry (MSP) in visible and ultraviolet light (UV–Vis) in the examination of textile fibers dyed with mixtures of synthetic dyes. Fragments of s
Autor:
Claudio Saitz, José Vicente García-Ramos, P. Leyton, Marcelo Campos-Vallette, Santiago Sánchez-Cortés, Concepción Domingo
Publikováno v:
APPLIED SPECTROSCOPY
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
Surface-enhanced micro-Raman spectroscopy (micro-SERS) was used to detect traces of the hazardous pollutant polycyclic aromatic hydrocarbons (PAHs) pyrene and benzo[c]phenanthrene deposited onto a calix[4]arene-functionalized Ag colloidal surface. Hi