Results 41 to 50 of about 459,406 (389)

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

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

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

Detection and identification of morphine in blood of male white rats (rattus norvegicus) by ultraviolet-visible spectrophotometry

open access: yesJournal of Physics: Conference Series, 2018
The blood of male white rats has been experimentally characterized by Ultraviolet-visible (UV-Vis) Spectrophotometry. Ultraviolet-visible (UV-Vis) spectrophotometry appears as an affordable option to monitor morphine composition in blood of male white ...
Z. Alfian   +4 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

Green Synthesis of Highly Luminescent Carbon Quantum Dots from Lemon Juice

open access: yesJournal 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

A UV Spectrophotometric method for simultaneous determination of Ibuprofen and Paracetamol concentration in suspensions

open access: yesRwanda Medical Journal, 2023
INTRODUCTION: Paracetamol is a standard antipyretic and analgesic which is widely used since the 19th century. Currently, paracetamol is the first-line treatment for pain management of different types.
E. Mugwiza, I. Hahirwa, T. Umumararungu
doaj   +1 more source

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