Results 91 to 100 of about 80,097 (310)

Elastic scattering spectroscopy accurately detects high grade dysplasia and cancer in Barrett's oesophagus [PDF]

, 2006
Background and aims: Endoscopic surveillance of Barrett’s oesophagus currently relies on multiple random biopsies. This approach is time consuming, has a poor diagnostic yield, and significant interobserver variability. Elastic scattering spectroscopy is
Lovat, L.B., Bigio, I., Johnson, K., Davies, S., Thorpe, S.M., Bown, S.G., Fitzgerald, R., Clark, B.R., Novelli, M.R., Mackenzie, G.D., Pickard, D., Fearn, T., Selvasekar, C., O’Donovan, M.   +13 more
core  

Potential of on-line visible and near infrared spectroscopy for measurement of pH for deriving variable rate lime recommendations [PDF]

, 2013
This paper aims at exploring the potential of visible and near infrared (vis-NIR) spectroscopy for on-line measurement of soil pH, with the intention to produce variable rate lime recommendation maps.
Yücel Tekin, Boyan Kuang, Tekin, Yücel, Mouazen, Abdul Mounem, Kuang, Boyan Y., Abdul Mouazen, Abdul M. Mouazen   +6 more
core   +1 more source

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

FEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj, Eline M. F. de Lange, Klaas A. Sjollema, Ben N. G. Giepmans   +3 more
wiley   +1 more source

Remote multispectral imaging with PRISMS and XRF analysis of Tang Tomb paintings [PDF]

, 2011
PRISMS (Portable Remote Imaging System for Multispectral Scanning) is a multispectral/hyperspectral imaging system designed for flexible in situ imaging of wall paintings at high resolution (tens of microns) over a large range of distances (less than a ...
Rebecca Lange, Lange, R, Zhang, Q, Qunxi Zhang, Liang, H, Haida Liang   +5 more
core   +1 more source

Determination of ambroxol in syrups using diffuse reflectance spectroscopy

Química Nova, 2009
This paper reports an analytical method for the determination of ambroxol in micellar medium by spot test-diffuse reflectance spectroscopy. The reflectance measurements were performed analyzing the colored compound (λ= 520 nm) produced from the ...
José L. Rufino, Joel M. Santos, Mayra A. Rodrigues, Helena R. Pezza, Leonardo Pezza   +4 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Diffuse reflectance spectroscopy of human skin lesions [PDF]

, 2005
We have applied VIS-NIR diffuse reflectance spectroscopy to study different human skin lesions. A new set of features has been derived through the analysis of their spectra to discriminate among normal skin and skin lesions.
J. R. Sendra, Cordo, M., Viera, Agustín, López Silva, S. M., M. Cordo, Sendra, J. R., A. Viera, S. M. Lopez Silva   +7 more
core   +1 more source

Review: An Optical Surface Probe by Reflectance Anisotropy Spectroscopy

Hittite Journal of Science and Engineering, 2019
Rface and interface information. RAS measures the difference in reflectance of light eflectance anisotropy spectroscopy RAS is an optical technique to produce surlinearly polarised along two orthogonal axes in the surface at near normal incidence as ...
Orhan Zeybek
doaj   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source