Results 21 to 30 of about 559,420 (288)

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

ANALISA FLAVONOID DARI EKSTRAK ETANOL 96% KULIT BUAH OKRA MERAH (Abelmoschus esculentus L. Moench) SECARA KROMATOGRAFI LAPIS TIPIS DAN SPEKTROFOTOMETRI UV-VIS

open access: yesJIIS: Jurnal Ilmiah Ibnu Sina, 2016
Telah dilakukan penelitian tentang Analisa Flavonoid dari Ekstrak Etanol 96% Kulit Buah Okra Merah Secara Kromatografi Lapis Tipis dan Spektrofotometer UV-Vis.
Nia Lisnawati   +2 more
doaj   +3 more sources

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

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   +3 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

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

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

The spectral resolution of DOM in urban rivers affected by different non-point source intensities using self-organizing maps

open access: yesWater Science and Technology, 2023
UV–Vis, three-dimensional excitation–emission matrix fluorescence spectroscopy (EEMs) and a self-organizing map (SOM) were used to study changes in the composition and constituent concentrations of dissolved organic matter (DOM) in the water column of ...
Xincheng Jin   +7 more
doaj   +1 more source

Determination of Hexavalent Chromium (Cr(VI)) Concentrations via Ion Chromatography and UV-Vis Spectrophotometry in Samples Collected from Nacogdoches Wastewater Treatment Plant, East Texas (USA) [PDF]

open access: yes, 2016
The concentration of hexavalent chromium (Cr(VI)), a toxic environmental pollutant and carcinogen, was determined in samples collected from Nacogdoches Wastewater Treatment Plant (NWWTP) using ion chromatography and UV-visible spectrophotometry (IC, UV ...
Onchoke, Kefa Karimu, Sasu, Salomey A
core   +3 more sources

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