Results 51 to 60 of about 48,569 (262)

Spectrophotometric Determination of Diclofenac sodium Using 2,4-dinitrophenylhydrazine in Pure Form and Pharmaceutical Preparations

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017
A simple and sensitive spectrophotometric method is described for the determination of diclofenac sodium (DCL), in pure form and pharmaceutical formulations.
Sarmad B. Dikran, Ruaa M. Mahmood
doaj  

Streptavidins Coordinate Biotin Sequestration and Self‐Resistance Within a Biotin‐Pathway Antibiotic Network

Advanced Science, EarlyView.
A conserved genomic region between two streptavidin genes in Streptomyces packages biosynthetic gene clusters for diverse biotin‐pathway antibiotics: acidomycin, stravidin, the new non‐proteinogenic amino acid ANDA, and the new BioA inhibitor α‐methyl‐KAPA.
Sumire Kurosawa, Jingjun Mo, Xiaotong Diao, Feng Xie, Tingting Wang, Haowen Zhao, Dalei Wu, Rolf Müller, Chengzhang Fu   +8 more
wiley   +1 more source

Spectrophotometric determination of antioxidant activity

Redox Report, 1996
The spectrophotometric technique for total antioxidant activity (TAA)(1,2) measures the relative abilities of antioxidants to scavenge the 2,2'-azino-bis(3-ethylbenz-thiazoline-6-sulfonic acid) (ABTS) radical cation (ABTS(•+)) in comparison with the antioxidant potency of standard amounts of Trolox, the water-soluble vitamin E analogue.
N J, Miller, C A, Rice-Evans
openaire   +2 more sources

Xenogeneic Mitochondrial Transplantation Improves Selected Age‐Associated Phenotypes in Mice

Advanced Science, EarlyView.
Yak‐derived xenogeneic mitochondrial transplantation improves selected age‐associated phenotypes in mice, enhances mitochondrial functional readouts, and engages host mitochondrial quality‐control pathways. Broad tissue biodistribution, increased ATP production and mtDNA copy number, reduced ROS levels and dysfunctional mitochondria, improved motility ...
Wenpeng Li, Xijia Wang, Yaning Hu, Zhen Yang, Tian Niu, Xingbo Zhao   +5 more
wiley   +1 more source

Development of a simple UV-spectrophotometric method for the determination of lansoprazole and study of its degradation profile

Química Nova, 2012
A UV-spectrophotometric method is described for the determination of lansoprazole (LAN). The method is based on the measurement of the absorbance of LAN solution in acetonitrile at 281 nm. The system obeyed Beer's law over the concentration range of 1.25-
Zenita Devi Okram, Basavaiah Kanakapura, Ramesh Pavagada Jagannathamurthy, Vinay Kanakapura Basavaiah   +3 more
doaj   +1 more source

Oxygen Vacancy‐Enriched Platinum Single‐Atom Nanozyme Wrapped in Nanoislands: Unlocking Catalytic Activity and Reprogramming Redox Microenvironment for Osteonecrosis Repair

Advanced Science, EarlyView.
CeO2‐x/Pt single‐atom nano‐island is constructed via low‐temperature reduction, featuring abundant oxygen vacancies and an island–sea structure. It delivers outstanding multi‐enzyme‐mimetic activity and ROS‐scavenging efficiency. Density functional theory reveals optimized electronic structures and reaction pathways.
Yang Zhu, Zehui Lv, Xuejie Cai, Penghui Wei, Dengliang Wang, Zhao Wang, Ruoying Wang, Yingjie Wang, Xingdong Yang, Yixin Bian, Jiawei Xu, Xisheng Weng, Liangfeng Wei   +12 more
wiley   +1 more source

2-Hydroxy-4-n-butoxy-5-bromoacetophenone thiosemicarbazone as an extractive spectrophotometric reagent for nickel

Orbital: The Electronic Journal of Chemistry, 2011
2-hydroxy-4-n-butoxy-5-bromoacetophenone thiosemicarbazone (HBBrAT) is spectrophotometric reagent for nickel (II) in chloroform. The metal ion reacts with 2-hydroxy-4-n-butoxy-5-bromoacetophenone thiosemicarbazone (HBBrAT) forming a dark brown coloured ...
K. N. Patel, K. S. Parikh, Rashmin Manubhai Patel   +2 more
doaj   +1 more source

A Sprayable Nanoplatform Breaks the Vicious Cycle of Diabetic Wounds via Photoactivated Antioxidant and Drug Delivery

Advanced Science, EarlyView.
A sprayable near‐infrared‐activated nanoplatform incorporating MXene, ZnHCF nanozyme, and deferoxamine efficiently breaks the vicious cycle of diabetic wounds. Upon irradiation, interfacial electron transfer and photothermal effects enhance multi‐enzyme activity, enabling explosive ROS elimination, alleviation of hypoxia, and controlled DFO release ...
Jiahao Guo, Yuanyuan Meng, Qixiang Gui, Xi‐Tao Yang, Yong Fan, Xiaodong Zhu   +5 more
wiley   +1 more source

Molecular Engineering Mediated Interfacial Assembly as an Artificial Extracellular Matrix Remolds Bacteria With Enhanced Abiotic Resilience

Advanced Science, EarlyView.
A biomimetic artificial extracellular matrix is assembled directly on Pseudomonas fluorescens by co‐assembling amyloid‐like lysozyme and alginate at the cell surface. This conformal nanocoating acts as both a hydration buffer and a physiological priming layer, markedly enhancing desiccation tolerance, seed adhesion, storage stability, and biocontrol ...
Yuanyuan Wang, Zili Jia, Yang Li, Qitao Wang, Shuai Hou, Lei Liu   +5 more
wiley   +1 more source

Two Validated Spectrophotometric Methods for Quantitative Analysis of Amlodipine Besylate in Pharmaceutical Preparations by Redox Reaction

Pakistan Journal of Analytical & Environmental Chemistry
This research aims to develop two spectrophotometric methods for the quantitative determination of amlodipine besylate (ADB) in its pure form and in pharmaceuticals.
Maab A. Al-jabbar , Khalida M. Omer
doaj   +1 more source