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Novel diaminoguanidine functionalized cellulose: synthesis, characterization, adsorption characteristics and application for ICP-AES determination of copper(II), mercury(II), lead(II) and cadmium(II) from aqueous solutions
Springer Science and Business Media LLC -
Magda A. Akl, Mohammed Hashem, Mohammed Ismail, Dina A. Abdelgalil
AbstractIn this study, the novel adsorbent diaminoguanidine-modified cellulose (DiGu.MC) was synthesized to extract mercury, copper, lead and cadmium ions from aqueous solutions and environmental water samples. The synthetic strategy involved oxidizing cellulose powder into dialdehyde cellulose (DAC) and reacting DAC with diaminoguanidine to create an imine linkage...... hiện toàn bộ
Synthesis, characterization and antimicrobial properties of two derivatives of pyrrolidine-2,5-dione fused at positions-3,4 to a dibenzobarrelene backbone
Springer Science and Business Media LLC - Tập 16 - Trang 1-10 - 2022
Emmanuel Sopbué Fondjo, Abdou Salamou Njoya, Jean-de-Dieu Tamokou, Giscard Doungmo, Bruno Ndjakou Lenta, Peter F. W. Simon, Apollinaire Tsopmo, Jules-Roger Kuiate
A new diazo derivative of a pyrrolidine-2,5-dione (8) fused at position-3,4 to a dibenzobarrelene backbone has been prepared by coupling the previously reported N-arylsuccinimid (5) precursor with aryldiazonium ion of aniline. The initial step of the reaction involved the preparation of the intermediate 9,10-dihydro-9,10-ethanoanthracene-11,12-dicarboxylic anhydride (3) through [4 + 2]-cycloadditi...... hiện toàn bộ
Synthesis and characterization of Cu-Doped ZnO nanostructures for UV sensing application
Springer Science and Business Media LLC - Tập 18 - Trang 1-8 - 2024
K. Al-heuseen, A. I. Aljameel, R. K. Hussein
In this work, Fabrication, and characterization of Cu-doped ZnO thin films deposited on porous silicon (PSi) substrates have been reported using electrochemical deposition (ECD) technique. The influence of Cu-doping concentrations on morphology, structure, and electrical characteristics of zinc oxide (ZnO) thin films were presented. X-ray diffraction analysis (XRD) has been used to characterize th...... hiện toàn bộ
HPLC/UV approach method for the first simultaneous estimation of molnupiravir and ertapenem as a binary mixture in human plasma and dosage form as a regimen for COVID-19 treatments
Springer Science and Business Media LLC - Tập 17 - Trang 1-8 - 2023
Khaled K. Afify, Ramadan Ali, Mohammad A. El-Dosoky, Mohamed wafaa I. Nassar
COVID-19 is a serious virus that can have a lot of effects, one of which is a secondary bacterial infection that can be more life-threatening and even lethal than the initial viral infection. Hence a fast and sensitive HPLC/UV method was developed and validated for the first estimation of a binary mixture of molnupiravir (MOL) and ertapenem (ERT) as a co-administrated medicine for the management o...... hiện toàn bộ
Effects of temperature and shear on the structural, thermal and pasting properties of different potato flour
Springer Science and Business Media LLC - Tập 14 - Trang 1-8 - 2020
Ke Zhang, Yang Tian, Chenglong Liu, Wentong Xue
The properties of potato flour will be different due to different processing parameters, which will affect their processing adaptability. In this paper, different potato flour were investigated to determine viscoelastic properties and structural transformation using thermodynamics, rheological and spectrum methods. Potato flour was prepared by drying at different temperature after soaking in citri...... hiện toàn bộ
Design, synthesis, and molecular docking studies of diphenylquinoxaline-6-carbohydrazide hybrids as potent α-glucosidase inhibitors
Springer Science and Business Media LLC - Tập 16 - Trang 1-13 - 2022
Keyvan Pedrood, Zahra Rezaei, Kimia Khavaninzadeh, Bagher Larijani, Aida Iraji, Samanesadat Hosseini, Somayeh Mojtabavi, Mehdi Dianatpour, Hossein Rastegar, Mohammad Ali Faramarzi, Haleh Hamedifar, Mir Hamed Hajimiri, Mohammad Mahdavi
A novel series of diphenylquinoxaline-6-carbohydrazide hybrids 7a–o were rationally designed and synthesized as anti-diabetic agents. All synthesized compounds 7a–o were screened as possible α-glucosidase inhibitors and exhibited good inhibitory activity with IC50 values in the range of 110.6 ± 6.0 to 453.0 ± 4.7 µM in comparison with acarbose as the positive control (750.0 ± 10.5 µM). An exceptio...... hiện toàn bộ
Synthesis of novel mono- and bis-pyrazolylthiazole derivatives as anti-liver cancer agents through EGFR/HER2 target inhibition
Springer Science and Business Media LLC - Tập 17 - Trang 1-17 - 2023
Mostafa E. Salem, Esraa M. Mahrous, Eman A. Ragab, Mohamed S. Nafie, Kamal M. Dawood
3-Bromoacetyl-4-(2-naphthoyl)-1-phenyl-1H-pyrazole (6) was synthesized from 2-acetylnaphthalene and was used as a new key building block for constructing the title targets. Thus, the reaction of 6 with the thiosemicarbazones 7a–d and 9–11 afforded the corresponding simple naphthoyl-(3-pyrazolyl)thiazole hybrids 8a–d and 12 ~ 14. The symmetric bis-(2-naphthoyl-pyrazol-3-yl)thiazol-2-yl)hydrazono)me...... hiện toàn bộ
A highly sensitive and green electroanalytical method for the determination of favipiravir in pharmaceutical and biological fluids
Springer Science and Business Media LLC - Tập 17 - Trang 1-11 - 2023
Heba M. El-Sayed, Hisham Ezzat Abdellatef, Hassan A. M. Hendawy, Omar M El-Abassy, Hany Ibrahim
Favipiravir is currently used for the treatment of coronavirus disease-2019 (COVID-19). A highly sensitive and eco-friendly electroanalytical method was developed to quantify favipiravir. The voltammetric method optimized a sensor composed of reduced graphene oxide / modified carbon paste electrode in the presence of an anionic surfactant, improving the favipiravir detection limit. The investigati...... hiện toàn bộ
Eco-friendly monitoring of triclosan as an emerging antimicrobial environmental contaminant utilizing electrochemical sensors modified with CNTs nanocomposite transducer layer
Springer Science and Business Media LLC - Tập 17 Số 1
Nardine Safwat, Amr M. Mahmoud, Maha Farouk, Miriam F. Ayad
AbstractEnvironmental appearance of antimicrobials due to frequent use of personal care products as recommended by WHO can cause serious flare-up of antimicrobial resistance. In this work, three eco-friendly microfabricated copper solid-state sensors were developed for measuring triclosan in water. Multi-walled carbon nanotubes were incorporated in sensor 2 and 3 a...... hiện toàn bộ
Experimental and theoretical study for removal of trimethoprim from wastewater using organically modified silica with pyrazole-3-carbaldehyde bridged to copper ions
Springer Science and Business Media LLC - Tập 16 - Trang 1-17 - 2022
Shehdeh Jodeh, Ahlam Jaber, Ghadir Hanbali, Younes Massad, Zaki S. Safi, Smaail Radi, Valbonë Mehmeti, Avni Berisha, Said Tighadouini, Omar Dagdag
Human and veterinary antibiotics are typically discharged as parent chemicals in urine or feces and are known to be released into the environment via wastewater treatment plants (WWTPs). Several research investigations have recently been conducted on the removal and bioremediation of pharmaceutical and personal care products (PPCPs) disposed of in wastewater. SiNP-Cu, a chelating matrix, was produ...... hiện toàn bộ
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