Results 61 to 70 of about 22,161 (255)

FORMULA ESTABLISHMENT OF COLORLESS Pb(II) COMPLEX WITH N-BENZOYL-N-PHENYL HYDROXYLAMINE (BPA) USING ATOMIC ABSORPTION SPECTROSCOPY

Indonesian Journal of Chemistry, 2012
A new method for determination of stoichiometry of colorless complexes by using atomic absorption spectrophotometric technique in continuous variation method and slope ratio method was described here.
Dhananjay B Sarode, Sopan T Ingle, Sanjay B Attarde   +2 more
doaj   +1 more source

[The examination of peat preparations by the UV-VIS absorption spectrophotometry].

Roczniki Panstwowego Zakladu Higieny, 2008
For the testing of natural peat extracts and preparations produced from them absorbance measurements in the range lambda = 200--800 nm were used. The progressive increase of absorption spectra from 450 nm to short waves was observed. The curve calibration was rectilinear in a solution of humus acid (commercial preparation) when lambda = 420 nm.
Michał, Drobnik, Teresa, Latour, Beata, Krawczyk   +2 more
openaire   +1 more source

Nano‐Backpack Engineered Probiotics with Reactive Oxygen Species–Responsive Tungsten Release for Synergistic Therapy of Inflammatory Bowel Disease

Advanced Science, EarlyView.
An integrated probiotic system is engineered to execute a programmed therapeutic cascade against inflammatory bowel disease. Upon pathological signals, the system sequentially performs ROS scavenging, tungsten release, and selective pathogen suppression, thereby breaking the oxidative stress–dysbiosis cycle to remodel gut microbiota and reinforce ...
Yang Yang, Liucan Wang, Guoqing Chen, Yuanling Zhang, Jiarui Shi, Wenzhe Fan, Min Yu, Jixi Zhang, Hua Yang   +8 more
wiley   +1 more source

PROPOSTA EXPERIMENTAL DIDÁTICA PARA O ENSINO DE ANÁLISE DE COMPONENTES PRINCIPAIS

Química Nova, 2016
Principal component analysis (PCA) is a chemometric method that allows for the extraction of chemical information that would otherwise be impossible to determine.
Leonardo Valderrama, Vassula Belinato Paiva, Paulo Henrique Março, Patrícia Valderrama   +3 more
doaj   +1 more source

A Pathology‐Instructed Theranostic Platform with Mechanoadaptive and ROS‐Powered Nanobreathing Functions for Precision Myocardial Repair

Advanced Science, EarlyView.
We developed a pH responsive theranostic serum albumin hydrogel named BST, functionalized with MRI and CT probes and loaded with mitochondria targeted CAT‐SOD nanogels, that rapidly self repairs and mechanically stabilizes the infarcted myocardium, releases therapeutic nanogels and albumin under hypoxia induced acidosis to clear mitochondrial ROS ...
Zheng Luo, Cui Yang, Liuzhou Mao, Panqin Ma, Chiyu Jia, Karen Yuanting Tang, Xian Jun Loh, Yun‐Long Wu   +7 more
wiley   +1 more source

Kinetic Spectrophotometric Method for the 1,4-Diionic Organophosphorus Formation in the Presence of Meldrum′s Acid: Stopped-Flow Approach

Molecules, 2016
The kinetics of the reaction between triphenylphosphine (TPP) and dimethyl acetylenedicarboxylate (DMAD) in the presence of Meldrum’s acid (MA) for the generation of the 1,4-diionic organophosphorus compound has been investigated using the stopped-flow ...
Fatemeh Ghodsi, Sayyed Mostafa Habibi-Khorassani, Mehdi Shahraki   +2 more
doaj   +1 more source

Self‐Sustaining Lactate Depletion Nanoplatform Remodels Tumor Microenvironment and Augments Synergistic Photodynamic/Photothermal/Chemodynamic/Starvation Therapy for Eradication of Colon Cancer

Advanced Science, EarlyView.
The HILA nanoplatform integrates HMnO2, LOX, and ICG to orchestrate multimodal therapy (starvation, chemodynamic, photodynamic, and photothermal) for achieving efficient colon cancer eradication. The established HMnO2‐LOX catalytic cycle continuously consumes lactate, acidifys microenvironment, relieves hypoxia, and generats reactive oxygen species ...
Yu‐E. Wang, Shibo Zhao, Wenying Wu, Zhiwei Duan, Yuan Li, Xiangyu Zeng, Liang Hong, Yan Chen, Ling Tao, Kewu Zeng, Chaoda Xiao, Xiangchun Shen   +11 more
wiley   +1 more source

Cerium Nanoparticle‐Mediated Inhibition of the NSUN2/m5C Axis Suppresses Synovial Aggression in Rheumatoid Arthritis

Advanced Science, EarlyView.
A novel epitranscriptomic mechanism in rheumatoid arthritis is uncovered: NSUN2 promotes disease via m5C‐dependent stabilization of ICMT mRNA, fueling the migration and invasion of pathogenic RA FLS. Targeting this axis with engineered nanoparticles (Ce/SAA NPs) effectively inhibits disease progression, presenting a precise therapeutic strategy ...
Ruiru Li, Simin Chen, Huijuan Hu, Shiyao Wu, Jingnan Wang, Kai Sun, Chenxi Peng, Suling Liu, Shuoyang Zhang, Yu Kuang, Wei Chen, Qian Qiu, Liuqin Liang, Yu Wen, Hanshi Xu, Youjun Xiao   +15 more
wiley   +1 more source

PENETAPAN KADAR FLAVONOID EKSTRAK TERPURIFIKASI UMBI BAWANG DAYAK (Eleutherine palmifolia (L). Merr) SECARA SPEKTROFOTOMETRI

JIIS: Jurnal Ilmiah Ibnu Sina, 2019
Eleutherine palmifolia (L) Merr. is one of the plant that has function as medicine. One of the compound which much contained in ethanol extract of dayak union is flavonoid, so that could separate with purification.
Siti Jubaidah, Eka Siswanto, Heri Wijaya, Muhammad Putu Aditya   +3 more
doaj  

Applications of Spectroscopy in Veterinary Clinical Analysis—Literary Review

Proceedings
Introduction: UV–Vis spectrophotometry is a central technique in veterinary diagnostics, enabling quantification of biomolecules such as glucose, proteins, and creatinine, as well as minerals and pharmaceuticals [...]
Thiago R. Silva, Lavinia M. Barbosa, Rômulo D. A. Andrade, Eduarda S. Fabri, Maria H. R. Marques, Heitor A. B. da Silva   +5 more
doaj   +1 more source