Results 31 to 40 of about 8,156 (254)

Iron speciation in natural waters by sequential injection analysis with a hexadentate 3-hydroxy-4-pyridinone chelator as chromogenic agent [PDF]

Talanta, 2016
A sequential injection method for iron speciation in various types of natural waters was developed using a synthesised hexadentate 3-hydroxy-4-pyridinone chelator (CP256). The denticity of the ligand that allow formation of the corresponding iron(III) complex in a 1:1 stoichiometry proved to be highly advantageous, in comparison with parent bidentate ...
Miranda, Joana, Mesquita, Raquel, Ana, Nunes, Rangel, Maria, Rangel, António O. S. S.   +4 more
openaire   +3 more sources

Use of a Polymer Inclusion Membrane and a Chelating Resin for the Flow-Based Sequential Determination of Copper(II) and Zinc(II) in Natural Waters and Soil Leachates [PDF]

Molecules, 2020
A bi-parametric sequential injection method for the determination of copper(II) and zinc(II) when present together in aqueous samples was developed. This was achieved by using a non-specific colorimetric reagent (4-(2-pyridylazo)resorcinol, PAR) together with two ion-exchange polymeric materials to discriminate between the two metal ions.
Ribas, Tânia C. F., Croft, Charles F., Almeida, M. Inês G. S., Mesquita, Raquel B. R., Kolev, Spas D., Rangel, António O. S. S.   +5 more
openaire   +5 more sources

How early can myocardial iron overload occur in Beta thalassemia major?

, 2014
BACKGROUND: Myocardial siderosis is the most common cause of death in patients with beta thalassemia major(TM). This study aimed at investigating the occurrence, prevalence and severity of cardiac iron overload in a young Chinese population with beta TM.
Gaohui Yang, Pan Hongfei, He, T, Lai, Y, Peng, P, Liu Rongrong, Long, X, Taigang He, Tan Shaohong, Liu, R, Hongfei Pan, Yang Weijia, Xingjiang Long, Rongrong Liu, Lai Yongrong, Yang Gaohui, He Taigang, Weijia Yang, Yang, G, Xinhua Zhang, Tan, S, Liling Long, Anderson Lisa, Lisa Anderson, Long Xingjiang, Yang, W, Zhang, X, Anderson, L, Peng Peng, Yongrong Lai, Zhang Xinhua, Long Liling, Pan, H, Shaohong Tan, Long, L   +34 more
core   +1 more source

Ketone synthesis via rhodium-catalyzed traceless chelation-controlled hydroacylation reactions

, 2018
This thesis documents the development of rhodium-catalyzed traceless chelation-controlled hydroacylation reactions for the synthesis of a variety of ketone products.
Ming Gao, Gao, Ming
core   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

FEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke, Michal Banasik, Rokas Juodeikis, Martin J. Warren, Richard W. Pickersgill   +4 more
wiley   +1 more source

Sequential Cross-linking of Gallic Acid-Functionalized GelMA-Based Bioinks with Enhanced Printability for Extrusion-Based 3D Bioprinting

, 2022
[Image: see text] The printability of a photocross-linkable methacrylated gelatin (GelMA) bioink with an extrusion-based 3D bioprinter is highly affected by the polymer concentration and printing temperature. In this work, we developed a gallic acid (GA)-
Parihar, Vijay Singh, Kellomäki, Minna, Jongprasitkul, Hatai, Turunen, Sanna, Parihar, Vijay   +4 more
core   +1 more source

Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies

Advanced Engineering Materials, EarlyView.
Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo, Daniela Winsley Valereto Friozi, Vinícius de Oliveira, Marcia Cristina Branciforti   +3 more
wiley   +1 more source

Sequential alternating deferiprone and deferoxamine treatment compared to deferiprone monotherapy: main findings and clinical follow-up of a large multicenter randomized clinical trial in thalassemia major patients

, 2011
In β-thalassemia major (β-TM) patients, iron chelation therapy is mandatory to reduce iron overload secondary to transfusions. Recommended first line treatment is deferoxamine (DFO) from the age of 2 and second line treatment after the age of 6 is ...
Gennaro D’Amico, Quota, A, Carmelo Magnano, Vincenzo Caruso, Carmelo Fidone, Gagliardotto, F, Paolo Cianciulli, Campisi, S, Maggio, A, Caruso, V, Rigano, P, Alessandra Quota, Aldo Filosa, Aurelio Maggio, Roberto Malizia, Morabito, A, Argento, C, Pietro Violi, Cuccia, L, Gluud, C., D'Amico, G, Luciano Prossomariti, Paolo Rigano, Filosa, A, D'Ascola, DG, Michele Rizzo, Saveria Campisi, VITRANO, Angela, Rizzo, M, Angela Vitrano, Calogera Gerardi, Cianciulli, P, Maria Antonietta Romeo, Magnano, C, Francesco Gagliardotto, Crocetta Argento, Marcello Capra, Violi, P, Christian Gluud, Liana Cuccia, Pantalone, GR, Capra, M, Alberto Morabito, Pepe, A, Malizia, R, Alessia Pepe, Fidone, C, Domenico Giuseppe D’Ascola, Gaetano Restivo Pantalone, Prossomariti, L, Romeo, MA, Gerardi, C   +51 more
core   +1 more source

Natural Bone‐Derived Ceramic Scaffolds Functionalized with Chitosan‐Gold, Chitosan‐Magnesium, and Chitosan‐Zinc for Enhanced Antibacterial Activity

Advanced Engineering Materials, EarlyView.
This study reports the development of antibacterial ceramic scaffolds derived from natural bovine bone. The bones were processed through sequential boiling and hydrogen peroxide treatment to remove organic matter, producing porous, mineral‐rich scaffolds.
Mohamad Hassan Taherian, Anh Thi Le, Anh Thi Van Le, Dung My Thi Dang, Tin Chanh Duc Doan, Chien Mau Dang, Martin Bolduc   +6 more
wiley   +1 more source