Results 21 to 30 of about 529,325 (289)

Diclofenac analysis in natural waters using UV-visible absorption spectrometric method

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2023
In this work, we developed an UV-visible (UV-VIS) absorption spectrometric method for the quantification of sodium diclofenac in natural waters. Several UV-VIS absorption method parameters were optimized.
Jean-Marie Bakhoum   +6 more
doaj   +1 more source

Descriminant analysis of flowers, leaves, stems of combretum indicum varr.M and Varr.B with UV-vis spectrophotometric chemometric method [PDF]

open access: yesE3S Web of Conferences, 2023
Combertum indicum has two varieties, namely varr.M and Varr.B., so to maintain the truth of the sample it is necessary to discriminate. The way to distinguish these two varieties can use the UV-vis spectrophotometric approach.
Hadi Samsul   +2 more
doaj   +1 more source

Improving high-altitude UV–Vis resistance of PBO braided tendons of NASA’s super pressure balloons

open access: yesThe Journal of The Textile Institute, 2015
Super pressure balloons (SPBs) are used by the National Aeronautics and Space Administration (NASA) for ultra-long duration ballooning (ULDB) missions which carry various scientific explorations to support space and earth sciences research activities. The resistance to photo-degradation of load-bearing braided tendons of SPBs is critical to the success
Vallabh, Rahul   +3 more
openaire   +3 more sources

Margarine products quality monitoring using reflectance UV-VIS-SWNIR spectroscopy [PDF]

open access: yes, 2008
Margarine is a term that can indicate any of a wide range of butter substitutes. Due to the great diversity of the raw material, margarine end-product quality characteristics are expected to be highly diversified.
Antó, Rui C. Martins, Vitor V. Lopes
core   +2 more sources

A Real-Time Ultraviolet Radiation Imaging System Using an Organic Photoconductive Image Sensor

open access: yesSensors, 2018
We have developed a real time ultraviolet (UV) imaging system that can visualize both invisible UV light and a visible (VIS) background scene in an outdoor environment.
Toru Okino   +6 more
doaj   +1 more source

Protein-mediated dethreading of a biotin-functionalised pseudorotaxane [PDF]

open access: yes, 2014
In this article, we describe the synthesis of new biotin-functionalised naphthalene derivatives 3 and 4 and their complexation behaviour with avidin and neutravidin using a range of analytical techniques.
Caldwell, S.T.   +11 more
core   +2 more sources

Predicting the UV–vis spectra of oxazine dyes

open access: yesBeilstein Journal of Organic Chemistry, 2011
In the current work we have investigated the ability of time-dependent density functional theory (TD-DFT) to predict the absorption spectra of a series of oxazine dyes and the effect of solvent on the accuracy of these predictions.
Scott Fleming, Andrew Mills, Tell Tuttle
doaj   +1 more source

Indigo in the nanochannels of zeolite L : towards a new type of colorant [PDF]

open access: yes, 2018
A host-guest based colorant was synthesized by intercalating indigo molecules into the nanochannels of zeolite L (ZL). Reductive washing thereby ensured the efficient and selective removal of non-intercalated indigo molecules.
Brühwiler, Dominik   +7 more
core   +1 more source

Remote Sensing Observation of New Particle Formation Events with a (UV, VIS) Polarization Lidar

open access: yesRemote Sensing, 2019
Observations of new particle formation events in free troposphere are rather seldom and limited in time and space, mainly due to the complexity and the cost of the required on-board instrumentation for airplane field campaigns.
Alain Miffre   +3 more
doaj   +1 more source

Forensic examination of different textile fibres using UV- Vis spectroscopy [PDF]

open access: yesE3S Web of Conferences
Objective: The purpose of this study is to forensically examine different textile fibres using UV/visible spectroscopy. Methodology: Five different fibre types of ten different local brands have been analyzed using uv-vis spectroscopy.Each fibre was ...
Aditi, Sharma Spriha
doaj   +1 more source

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