Results 271 to 280 of about 14,245,177 (346)

The burden of Onchocerca volvulus in Sudan

Annals of Tropical Medicine & Parasitology, 1998
Onchocerciasis has been reported in Sudan since 1908 and now prevails in three endemic regions known as the southern, northern and eastern foci. The southern focus is the largest, with nodule and blindness rates exceeding 80% and 12%, respectively, in certain villages.
M M, Mukhtar, M M, Khier, O Z, Baraka, M M, Homeida   +3 more
openaire   +2 more sources

Ultra-Trace Determination of Sudan I, II, III, and IV in Wastewater by Solid-Phase Microextraction (SPME) and on-Line Solid-Phase Extraction (SPE) with High-Performance Liquid Chromatography (HPLC)

, 2020
Two extraction/preconcentration methods are reported for the high-performance liquid chromatography (HPLC) determination of Sudan I, II, III, and IV in wastewater at trace (μg/L) and ultra-trace (ng/L) levels for the first time. The first approach, based
A. Aresta, Nicoletta De Vietro, C. Zambonin   +2 more
semanticscholar   +1 more source

Simple and sensitive electrochemical detection of sunset yellow and Sudan I in food based on AuNPs/Zr-MOF-Graphene

Food Control, 2023
Ruimeng Sun, Ruijuan Lv, Yuhan Li, Ting Du, Lixia Chen, Yang Zhang, Xiaoyu Zhang, Lina Zhang, Hainan Ma, Haolin Sun, Yanfei Qi   +10 more
semanticscholar   +1 more source

Magnetic solid phase extraction based on amino acid ionic liquids magnetic graphene oxide nanomaterials-high performance liquid chromatography for the simultaneous determination of Sudan I–IV

Journal of Liquid Chromatography & Related Technologies, 2020
A tryptophan ionic liquid (TrpIL) decorated magnetic graphene oxide (Fe3O4@SiO2-GO-TrpIL) nanocomposite has been prepared for magnetic solid-phase extraction of Sudan I–IV before their high performance liquid chromatography (HPLC) analysis.
Songqing Chen, Yan Zheng, Zijin Shen, Jiawei Li, Xiashi Zhu   +4 more
semanticscholar   +1 more source

History, ethnicity, and agriculturein the Sudan

1991
Abstract The Sudan is home to a human community with a long history and a rich and diverse culture. Not all the elements of the Sudanese experience are known, nor is everything known of immediate relevance to agriculture. The purpose of the present chapter is to delineate in broad terms some aspects of the Sudanese historical and ...
L Kapteijns, J Spaulding
openaire   +1 more source

Environmentally-friendly supramolecular solvent microextraction method for rapid identification of Sudan I-IV from food and beverages.

Food Chemistry, 2023
A. Dalmaz, Sezen SİVRİKAYA ÖZAK
semanticscholar   +1 more source

Vortex-Assisted Liquid-Liquid Microextraction Based on a Hydrophobic Deep Eutectic Solvent for the Highly Efficient Determination of Sudan I in Food Samples

Analytical Letters, 2019
As a new class of green solvents, hydrophobic deep eutectic solvents (DESs) have attracted considerable attention for liquid phase microextraction.
Kaige Zhang, Chuang Liu, Shuangying Li, Yunhe Wang, Guifen Zhu, Jing Fan   +5 more
semanticscholar   +1 more source

TheCulexMosquitos of the Sudan

Bulletin of Entomological Research, 1956
Forty five species, two subspecies and one variety ofCulexoccur in the Sudan.Taxonomic notes are given on a few species, and new localities, mainly for the subgenusCulex, are recorded. The known distribution of all species of this subgenus is shown on maps.Several aspects of distribution are discussed, and there is a short section on practical ...
openaire   +1 more source

Facile Synthesis of S-doped Carbon Quantum Dots and Their Application in the Detection of Sudan I in Saffron

Journal of Fluorescence, 2023
T. Mir, A. Malik, S. Shukla, Jaskaranjeet Singh, Deepak Kumar   +4 more
semanticscholar   +1 more source

Highly sensitive amperometric food sensor for Sudan-I dye using nanocomposites modified working electrode

Microchemical journal (Print), 2023
R. Kumari, Harish Kumar, Rahul Sharma, A. Yadav, G. Kumar, Aarti Tundwal, Ankit Dhayal, Anshu Sharma   +7 more
semanticscholar   +1 more source