Colored light is applied in medicine in the treatment of various diseases. The aim of this study was to investigate potential effects of exposure to blue and red light on brain and muscle blood volume ([tHb]) and tissue oxygenation (StO2) measured by noninvasive near-infrared spectrophotometry (NIRS). Ten healthy volunteers were included in a randomized crossover study. Blue light exposure lead...

We present near-infrared VLT-UT1+ISAAC spec-troscopy of a sample of 9 extremely red galaxies (ERGs) with R − K > 5 and K < 19.0. Neither strong emission lines (F lim <1–5×10 −16 erg s −1 cm −2) nor continuum breaks are detected. From near-infrared spectrophotometry, complemented with broad-band optical and near-IR photometry, we estimate " spectro-photometric " redshifts to be in the range of 0...

Bacterial biofilms constitute an extremely resistant form of bacterial colonization with dire health and economical implications. Towards achieving polymeric composites capable of resisting bacterial adhesion and biofilm formation, we prepared five 2,6-pyridinedicarboxylate-based polyesters employing five different diol monomers. The resulting polyesters were complexed with copper (II) or silve...

New optical methods of studying the infant brain have been developed over the last 20 years. These techniques make use of a window of transparency of biological tissue to near infrared light. Using spectrophotometry new insights have been gained into mechanisms of brain damage in newborn infants undergoing intensive care, and non-invasive functional activation studies have been pioneered in awa...

Silica nanoparticle supported imidazolium ionic liquid [SNImIL] was synthesized and utilized as a biocompatible additive for studying the thermal reversibility of human carbonic anhydrase II (HCA II). For this purpose, we prepared additive by modification of nanoparticles through the grafting of ionic liquids on the surface of nanoparticles (SNImIL). The SNImIL were fully characterized by Fouri...

New angular diameter determinations for the bright southern F8 supergiant δ CMa enable the bolometric emergent flux and effective temperature of the star to be determined with improved accuracy. The spectral flux distribution and bolometric flux have been determined from published photometry and spectrophotometry and combined with the angular diameter to derive the bolometric emergent flux F = ...

The present work describes the synthesis of a series of four novel biologically active 2-amino-5-arylazothiazole disperse dyes containing the sulfa drug nucleus. The structures of the synthesized thiazole derivatives are confirmed using UV-spectrophotometry, infrared and nuclear magnetic resonance techniques and elemental analysis. The synthesized dyes are applied to polyester fabrics as disper...

A. Introduction B. Optical and Spectrophotometric Detectors 1. Differential refractometry 2. Ultraviolet spectrophotometry 3. Fluorescence detection 4. Infrared spectrophotometric detectors 5. Spectrophotometric detection with post-column chemical reaction C. Some Miscellaneous Detection Systems 1. The mass spectrometer as an HPLC detector 2. Radioactivity detectors 3. Density, electrochemical ...