Results 41 to 50 of about 522,116 (371)
Determination of Levan from Bacillus licheniformis by Ultraviolet Spectrophotometry
, 2015 Purpose : To establish a first-order derivative ultraviolet spectrophotometric (FODUS) method with good reproducibility for the determination of levan, a D-fructofuranosyl polymer with a β-(2-6) backbone and β-(2-1) branching.
Wei Zhang +5 more
semanticscholar +1 more source
Green Synthesis of Highly Luminescent Carbon Quantum Dots from Lemon Juice
Journal of Nanotechnology, 2019 Highly luminescent carbon dots (C-dots) were synthesized by the one-pot simple hydrothermal method directly from lemon juice using different temperatures, time, aging of precursors, and diluted solvents to control the luminescence of C‐dots. The obtained
Bui Thi Hoan +2 more
doaj +1 more source
First Astronomical Application of a Cryogenic TES Spectrophotometer [PDF]
, 1999 We report on the first astronomical observations with a photon counting pixel detector that provides arrival time- (delta t = 100ns) and energy- (delta E_gamma < 0.15eV) resolved measurements from the near IR through the near UV.
A. J. Miller +11 more
core +2 more sources
UVB-311 nm phototherapy and NAD(+)/NADH metabolism in keratinocytes in patients with psoriasis
Przegląd Dermatologiczny, 2019 Narrow band (311 nm) UVB phototherapy is established treatment for psoriasis. DNA is a target for UVB via formation of cyclobutane pyrimidine dimers, which trigger loss of dendritic cells and macrophages, and inhibit CD4+ and CD8+ T cells.
Małgorzata Bernacka +4 more
doaj +1 more source
Screening of wheat grains enriched with wall-bound phenolic compounds
MethodsX, 2023 Phenolic compounds are dominant antioxidant factors in whole grains and are essential quality traits in future breeding programs. We proposed a robust set of methods for extraction, screening, and quantitative analysis of soluble and wall-bound (WB ...
Yi-Lin Gong, Jin-Ying Gou
doaj +1 more source
Multivariate Analysis of Perfumes by Ultraviolet Spectrophotometry
, 2015 An efficient, fast and cost-effective method for detecting adulteration in perfumes by UV spectroscopy and multivariate analysis is proposed. Classification of perfumes, either as original or fake, was accomplished with the spectroscopic data using ...
Clerton L. Gomes +5 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin +7 more
wiley +1 more source
Dissolution test for glibenclamide tablets
Química Nova, 2007 The aim of this work is to develop and validate a dissolution test for glibenclamide tablets. Optimal conditions to carry out the dissolution test are 500 mL of phosphate buffer at pH 8.0, paddles at 75 rpm stirring speed, time test set to 60 min and ...
Elisabeth Aparecida dos Santos Gianotto +4 more
doaj +1 more source
The high-field polar RX J1007.5-2017 [PDF]
, 2012 We report optical and X-ray observations of the high-field polar RXJ1007.5-2017 performed between 1990 and 2012. It has an orbital period of 208.60 min determined from the ellipsoidal modulation of the secondary star in an extended low state.
Beuermann, K. +4 more
core +2 more sources
Advanced Functional Materials, EarlyView.We propose a suture‐complementary approach that integrates optical skin clearing with a strain‐programmable luminescent adhesive patch. Hyaluronic acid promotes transdermal delivery of tartrazine to improve optical clearing and stabilizes its interaction with a photosensitizer. Optical clearing increases the penetration depth of visible light into skin,
Seong‐Jong Kim +6 more
wiley +1 more source