UV/Vis Spectroscopy / Ezine
Yes, we have blue bananas!
Date: Nov 1, 2008
Author: David Bradley
Forget the so-called morning banana diet, blue is the new yellow and researchers in Europe and the US have no intention of slipping up when it comes to explaining why ripened bananas glow blue under ultraviolet light.
Read More
Multicolor fluorescence imaging of leaves - a useful tool for visualizing systemic viral infections in plants
Date: Oct 13, 2008
Author:
The systemic infection of Nicotiana benthamiana plants with the Pepper mild mottle virus has been studied by multicolor fluorescence imaging to detect differences between two strains of the virus during the infection process and to establish a correlation between the virulence and changes induced in the host plant.
Read More
Cosmic molecules
Date: Oct 1, 2008
Author: David Bradley
Astroscientists are using various spectroscopic techniques to root out relatively complex molecules lurking in the interstellar medium. The complexity of naphthalene, discovered in space, and corannulene, could provide new evidence of a cosmic origin for the precursor molecules of life on Earth.
Read More
Maya blue-green pigments found in Calakmul, Mexico: a study by Raman and UV-visible spectroscopy
Date: Sep 8, 2008
Author:
A survey of the blue and green pigments used in the Early Classic and Late Classic periods in Calakmul (300-850 A.D.) has been performed using Raman and UV-visible spectroscopies to have a better understanding of their chemical composition and origin.
Read More
Universal detector
Date: Sep 1, 2008
Author: David Bradley
A team in Japan has used UV spectroscopy and microscopy to study the interaction between liposome clusters and endocrine-disrupting chemicals (EDCs) as a model of how living cell plasma membranes might be affected. The work could lead to the development of a universal detector for EDCs.
Read More
Detection of pretreated fingerprint fluorescence using an LED-based excitation system
Date: Aug 11, 2008
Author:
Optimization of a light emitting diode (LED)-based excitation system for the detection of pretreated fingerprint fluorescence is described. It employs blue and green LED arrays composed of ninety LED units with suitable low pass filters.
Read More
Summer screen
Date: Aug 1, 2008
Author: David Bradley
Wear sunscreen! It has been the advice of the medical profession, governments, and parents everywhere for several years. But, a report published this summer by the Environmental Working Group suggests that many popular sun protection products are at best ineffective, and at worst hazardous to health.
Read More
Optical spectroscopy of single-walled carbon nanotubes: From excitonic effects towards control of the radiative lifetime
Date: Jul 14, 2008
Author:
The radiative lifetime of single-walled carbon nanotubes has been enhanced by exciton coupling to surface plasmon polaritons in metallic nanostructures, as illustrated by their two-photon liminescence spectra.
Read More
Testing time for testosterone
Date: Jul 1, 2008
Author: David Bradley
A new analytical approach to testing for testosterone and related steroids in body fluids using non-specific micellar electrokinetic chromatography (MEKC) has been developed. The partial filling (PF) technique was employed, which means the approach is suitable for detection by either ultraviolet spectrophotometry or electrospray ionization mass spectrometry.
Read More
The protein fluorescence and structural toolkit: Database and programs for protein fluorescence and structural data
Date: Jun 9, 2008
Author:
Individual software modules developed previously for fluorescence and structural analyses have been integrated and a new program for the assignment of tryptophan residues to spectral-structural classes has been introduced. They form part of a web-based protein fluorescence and structural toolkit (PFAST).
Read More
