Results 81 to 90 of about 51,800 (290)

A note on cement in asteroids [PDF]

Icarus 275, 249 (2016), 2016
Cement mineral tobermorite was formed in hydrothermal experiments on alternation of calcium-aluminum-rich inclusions (CAIs) in carbonaceous chondrite meteorites. Unidentified bands at 14 microns were measured for CAIs and the matrix of the Allende meteorite sample, as well as for Hektor and Agamemnon asteroids.
arxiv   +1 more source

Adsorption of Mercury in Aqueous Solutions by Functionalized Cellulose Extracted from Soybean Hulls

ChemPlusChem, EarlyView.
Reuse of agricultural waste as a source of adsorbent cellulose‐based materials is a low‐cost and sustainable approach to remove potentially toxic elements (PTEs) from aqueous solutions. This approach is successfully applied in the removal of mercury from aquaculture water, an important source of food where the absence of PTEs is a fundamental requisite
Monica Rigoletto, María Rapp, Amaya Arencibia, María‐José López‐Muñoz, Maria Laura Tummino, Nieves Fernández de Paz, Enzo Laurenti   +6 more
wiley   +1 more source

Synthesis and Antibacterial Study of New Microporous Zinc Phosphate Bioceramics [PDF]

, 2019
In a ternary system composed of aluminum phosphate, zinc oxide, and orthophosphoric acid, we have prepared microporous ceramics for orthopedic and dental uses.
Asehraou, A., Demnati, H., Hammouti, B., Jabri, M., Lakrat, M., Mejdoubi, E.   +5 more
core   +2 more sources

The application of Nano-silica gel in sealing well micro-annuli and cement channeling [PDF]

arXiv, 2023
The possibility for hydrocarbon fluids to migrate through debonded micro-annuli wells is a major concern in the petroleum industry. With effective permeability of 0.1-1.0 mD, the existence of channels in a cement annulus with apertures of 10-300 micrometer constitutes a major threat. Squeeze cement is typically difficult to repair channels-leakage with
arxiv  

Zinc oxide induces the stringent response and major reorientations in the central metabolism of Bacillus subtilis [PDF]

Journal of Proteomics, Elsevier, 2016, 135 (Sp{\'e}ciale Issue), pp.170-180, 2018
Microorganisms, such as bacteria, are one of the first targets of nanoparticles in the environment. In this study, we tested the effect of two nanoparticles, ZnO and TiO2, with the salt ZnSO4 as the control, on the Gram-positive bacterium Bacillus subtilis by 2D gel electrophoresis-based proteomics.
arxiv   +1 more source

Randomized clinical trial evaluating kinetic benefits of desensitizing agents: Magnitude, onset, and stability of relief

Journal of Periodontology, EarlyView.
Abstract Background Dentin hypersensitivity (DH) is common, particularly among periodontal patients. This trial evaluated magnitude of desensitizing benefit, onset of action, and complete relief of three dentifrices with distinct desensitizing technologies.
Aaron R. Biesbrock, Tao He, Yuanshu Zou, Julie M. Grender, Pejmon Amini, Paul A. Sagel, Andrew Groth, Malgorzata Klukowska   +7 more
wiley   +1 more source

The Evolution of Dental Materials over the Past Century: Silver and Gold to Tooth Color and Beyond. [PDF]

, 2019
The field of dental materials has undergone more of a revolution than an evolution over the past 100 y. The development of new products, especially in the past half century, has occurred at a staggering pace, and their introduction to the market has been
Bayne, SC, Ferracane, JL, Marshall, GW, Marshall, SJ, van Noort, R   +4 more
core   +1 more source

Comparison of solubility of four type of cements used in fixed restorations

مجله دانشکده دندانپزشکی اصفهان, 2009
Introduction: Zinc phosphate and poly carboxilate cement have wide usage in operative,pedodontics dentistry and fixed prosthodontics. Ariadent zinc phosphate and poly carboxilatecements are manufactured in Iran.
M Sabouhi, M Taher, S Nosouhian, A Yarahmadi   +3 more
doaj  

Arbuscular mycorrhizal fungi increase aleurone layer zinc concentration but reduce overall zinc bioavailability in rice grain

PLANTS, PEOPLE, PLANET, EarlyView.
Rice is a critical crop for the delivery of calories and essential micronutrients to the human diet. Biofortification of rice with zinc (Zn) and iron (Fe) aims to combat the health issues associated with “hidden hunger”. Arbuscular mycorrhizal (AM) fungi have been explored for their potential to enhance Zn and Fe uptake in rice products.
Thi Diem Nguyen, Na Sai, Alexander A. T. Johnson, Enzo Lombi, Euan Smith, Casey L. Doolette, Timothy R. Cavagnaro, Stephanie J. Watts‐Williams   +7 more
wiley   +1 more source

The kinetics of water loss from zinc phosphate and zinc polycarboxylate dental cements

Journal of Materials Science: Materials in Medicine, 2007
The water desorption behaviour of three different zinc oxide dental cements (two polycarboxylates, one phosphate) has been studied in detail. Disc-shaped specimens of each material were prepared and allowed to lose water by being subjected to a low humidity desiccating atmosphere over concentrated sulfuric acid.
Beata Czarnecka, John W. Nicholson
openaire   +3 more sources