Results 41 to 50 of about 455,062 (389)

NOVEL ULTRAVIOLET ABSORBERS DERIVED FROM CASHEW NUT SHELL LIQUID: SPECTROPHOTOMETRIC, IN SILICO AND IN VITRO ASSAYS

open access: yesDrug Analytical Research, 2020
The cashew nut shell liquid (CNSL) constituents were isolated by our group leading to four mixtures and seventeen pure compounds, which had chromophoric groups similar to organic ultraviolet (UV) absorbers.
Emeli Moura de Araújo   +10 more
doaj   +1 more source

RECENT DEVELOPMENT IN ULTRAVIOLET SPECTROPHOTOMETRY THROUGH THE LAST DECADE (2006-2016): A REVIEW

open access: yes, 2016
Several techniques have been proposed for treatment of spectrophotometric data, with the objective of extracting the largest amount of analytical information from spectra composed of unresolved bands.
H. Lotfy, S. Saleh
semanticscholar   +1 more source

Reddened, Redshifted, or Intrinsically Red? Understanding Near-Ultraviolet Colors of Type Ia Supernovae [PDF]

open access: yes, 2017
Understanding the intrinsic colors of Type Ia supernovae (SNe Ia) is important to their use as cosmological standard candles. Understanding the effects of reddening and redshift on the observed colors are complicated and dependent on the intrinsic ...
Brown, Peter J.   +3 more
core   +3 more sources

Preparation of gastrodin‐modified dendrimer‐entrapped gold nanoparticles as a drug delivery system for cerebral ischemia–reperfusion injury

open access: yesBrain and Behavior, Volume 12, Issue 12, December 2022., 2022
Abstract Objective This study sought to evaluate the feasibility of multifunctional gastrodin (GAS)‐containing nano‐drug carrier system against cerebral ischemia–reperfusion injury (CIRI). Methods The drug‐loaded nanocomposite (Au‐G5.NHAc‐PS/GAS) with certain encapsulation efficiency (EE) was prepared by physical adsorption method using different ...
Wenqiang Huang   +8 more
wiley   +1 more source

Exploring Optical and Electrical Gas Detection Based on Zinc-Tetraphenylporphyrin Sensitizer [PDF]

open access: yesarXiv, 2021
We developed optical waveguide (OWG), ultraviolet-visible spectrophotometry (UV-vis), and electrically operated gas sensors by utilizing zinc-tetraphenylporphyrin (ZnTPP) as sensitizer. Strikingly, ZnTPP thin-film/K+-exchanged glass optical waveguide (OWG) sensing element exhibits a superior signal-to-noise ratio (SNR) of 109.6 upon 1 ppm NO2 gas ...
arxiv  

Development and validation of the discriminating method of prasugrel dissolution in tablets using ultraviolet detection

open access: yesActa Scientiarum. Health Sciences, 2014
Current study develops and validates a dissolution test for Prasugrel hydrochloride 10 mg in coated tablets. After sink condition, filters and drug stability were evaluated, the discriminatory dissolution conditions were achieved with a USP apparatus 1 ...
Camila Rigobello   +2 more
doaj   +1 more source

Development and validation of RP-LC and uv spectrophotometric methods to assay bromopride in oral and injectable solutions

open access: yesQuímica Nova, 2010
A reversed-phase liquid chromatographic (LC) and ultraviolet (UV) spectrophotometric methods were developed and validated for the assay of bromopride in oral and injectable solutions. The methods were validated according to ICH guideline.
Márcia Camponogara Fontana   +6 more
doaj   +1 more source

Determination of Levan from Bacillus licheniformis by Ultraviolet Spectrophotometry

open access: yes, 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

Determination of silicon in natural waters by spectrophotometry using modern methods of sample preparation

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2017
The main aim of the study is to develop modern methods of preparing natural water samples using ultrasound, ultraviolet radiationand photocatalytic systems for destruction of polysilicic acids and silicon complexes with humic substances to determine ...
Indira Abdumominovna Bekbulatova   +2 more
doaj   +2 more sources

Techniques and Review of Absolute Flux Calibration from the Ultraviolet to the Mid-Infrared [PDF]

open access: yes, 2014
The measurement of precise absolute fluxes for stellar sources has been pursued with increased vigor since the discovery of the dark energy and the realization that its detailed understanding requires accurate spectral energy distributions (SEDs) of redshifted Ia supernovae in the rest frame.
arxiv   +1 more source

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