Results 21 to 30 of about 76,330 (257)

The Effect of Different Acid Treatments on Shear Bond Strength Between Monolithic Zirconia and Dentin Surface

Cumhuriyet Dental Journal, 2021
Objective: The aim of this study is to evaluate the effect of dentin surface treatments with citric, tartaric, phosphoric, and boric acids on the bonding strength of monolithic zirconia.
Oguzhan Gorler, Melih Ulgey
doaj   +1 more source

Comparison of the effects of pre-activators on morphology and corrosion resistance of phosphate conversion coating on magnesium alloy

Journal of Magnesium and Alloys, 2022
In this study, Mg–6.0Zn–3.0Sn–0.5Mn (ZTM630) magnesium alloy was pre-activated by colloidal Ti, oxalic acid, and phosphoric acid, and a phosphate conversion coating (PCC) was prepared on the alloy surface.
Tao Li, Zhongjun Leng, Shifang Wang, Xitao Wang, Reza Ghomashchi, Yuansheng Yang, Jixue Zhou   +6 more
doaj   +1 more source

Evaluation of Different Capture Solutions for Ammonia Recovery in Suspended Gas Permeable Membrane Systems

Membranes, 2022
Gas permeable membranes (GPM) are a promising technology for the capture and recovery of ammonia (NH3). The work presented herein assessed the impact of the capture solution and temperature on NH3 recovery for suspended GPM systems, evaluating at a ...
María Soto-Herranz, Mercedes Sánchez-Báscones, Juan Manuel Antolín-Rodríguez, Pablo Martín-Ramos   +3 more
doaj   +1 more source

Modification of Amberlite XAD-2 resin for U(VI) adsorption from Egyptian crude phosphoric acid

Egyptian Journal of Petroleum, 2019
Adsorption of U(VI) from Egyptian crude phosphoric acid was studied using the modified Amberlite XAD-2 resin. Modification process was performed by soaking Amberlite XAD-2 resin in tri-butyl phosphate (TBP) and di-2-ethyl hexyl phosphoric acid (D2EHPA ...
A.M. El Didamony, W.M. Youssef, A.A. Abdou   +2 more
doaj   +1 more source

Effect of Co-solution of Carbon Precursor and Activating Agent on the Textural Properties of Highly Porous Activated Carbon Obtained by Chemical Activation of Lignin With H3PO4

Frontiers in Materials, 2020
This work analyzes the effect of co-solution of carbon precursor and activating agent on the textural and surface chemistry properties of highly nanoporous activated carbons obtained by chemical activation of Alcell lignin with phosphoric acid.
Imane Moulefera, Imane Moulefera, Francisco J. García-Mateos, Abdelghani Benyoucef, Juana M. Rosas, José Rodríguez-Mirasol, Tomás Cordero   +6 more
doaj   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

The Effect of Enamel Etching with Different Acids on the Bond Strength of Brackets

Turkish Journal of Orthodontics, 2007
The purpose of this study was to compare the bond strengths of metallic brackets on human enamel etched with different acid solutions including (1) 37% phosphoric acid, (2) 10% maleic acid, (3) 37% phosphoric acid with i.23% NaF addition, (4) 10% maleic ...
Ayşegül Baş-Kalkan, Metin Orhan, Serdar Üşümez   +2 more
doaj   +1 more source

Antimicrobial and cytotoxic effects of phosphoric acid solution compared to other root canal irrigants

Journal of Applied Oral Science, 2015
Phosphoric acid has been suggested as an irrigant due to its effectiveness in removing the smear layer. Objectives : The purpose of this study was to compare the antimicrobial and cytotoxic effects of a 37% phosphoric acid solution to other irrigants ...
Maíra PRADO, Emmanuel João Nogueira Leal da SILVA, Thais Mageste DUQUE, Alexandre Augusto ZAIA, Caio Cezar Randi FERRAZ, José Flávio Affonso de ALMEIDA, Brenda Paula Figueiredo de Almeida GOMES   +6 more
doaj   +1 more source

dUTPase is essential in zebrafish development and possesses several single‐nucleotide variants with pronounced structural and functional consequences

FEBS Open Bio, EarlyView.
dUTPases are involved in balancing the appropriate nucleotide pools. We showed that dUTPase is essential for normal development in zebrafish. The different zebrafish genomes contain several single‐nucleotide variations (SNPs) of the dut gene. One of the dUTPase variants displayed drastically lower protein stability and catalytic efficiency as compared ...
Viktória Perey‐Simon, Angéla Békesi, Latifa Kazzazy, Jázmin Mihály, Máté Varga, Beáta G. Vértessy, Kinga Nyíri   +6 more
wiley   +1 more source

Assessment of the structural evolution of polyimide-derived carbons obtained by phosphoric acid activation using Fourier transform infrared and Raman spectroscopy

Adsorption Science & Technology, 2017
Two series of carbons obtained by carbonization of porous copolymer of 4,4′-bis(maleimidodiphenyl) methane (50 mol%) and divinylbenzene (50 mol%) with and without phosphoric acid (impregnation ratio 1.1) at temperatures 400–1000℃.
Alexander M Puziy, Olga I Poddubnaya, Magdalena Sobiesiak, Barbara Gawdzik   +3 more
doaj   +1 more source