Results 11 to 20 of about 899,614 (253)

Comparative microleakage outcomes of different techniques used for creating the occlusal anatomy in occlusal direct restorations using the dental operating microscope

Clinical and Experimental Dental Research, Volume 8, Issue 6, Page 1623-1629, December 2022., 2022
Abstract Objectives Microleakage in direct dental restorations is a primary causal factor in the restoration's failure. The aim of this study was to evaluate whether the technique for occlusal layering of the composite resin (the use of brush adaptation, the use of magnification, cusp build‐up, stamp technique) has any effect on microleakage of direct ...
Marius G. Bud, Razvan C. Pop, Razvan Pricope, Anca Mesaros, Andrada Voina, Ada Delean, Ondine Lucaciu, Sanda Cîmpean   +7 more
wiley   +1 more source

Functional activity of peptide ion channels in tethered bilayer lipid membranes: Review

Electrochemical Science Advances, Volume 2, Issue 6, December 2022., 2022
Abstract Ion transport across biomembranes plays a major role in living cells. This fundamental function is normally carried out by molecules with both a hydrophobic and a hydrophilic side (amphiphilic molecules), which aggregate within the membrane forming a hydrophilic pore (the ion channel) permitting the selective translocation of permeant ions ...
Rolando Guidelli, Lucia Becucci
wiley   +1 more source

Irreversibility scrutinization on EMHD Darcy–Forchheimer slip flow of Carreau hybrid nanofluid through a stretchable surface in porous medium with temperature‐variant properties

Heat Transfer, Volume 52, Issue 1, Page 395-429, January 2023., 2023
Abstract The significance of hybrid nanofluids in controlling heat transmission cannot be overemphasized. Therefore, this article scrutinizes the electromagnetized flow of Carreau hybrid nanofluid towards a stretching surface in a Darcy–Forchheimer porous medium with the occurrence of slip conditions.
M. P. Mkhatshwa, M. Khumalo
wiley   +1 more source

Atomic and nuclear surface analysis methods for dental materials: A review

AIMS Materials Science, 2018
The development of dental biomaterials is now on the rise, with new materials created at a high rate and in large variety. Yet, considerable effort is needed to improve their physical–chemical characteristics as well as their biotolerance ...
Eugen A. Preoteasa, Elena S. Preoteasa, Ioana Suciu, Ruxandra N. Bartok   +3 more
doaj   +1 more source

Isolation of a californium(II) crown–ether complex

Nature Chemistry, 2023
The actinides, from californium to nobelium (Z = 98–102), are known to have an accessible +2 oxidation state. Understanding the origin of this chemical behaviour requires characterizing Cf^II materials, but investigations are hampered by the fact that ...
Todd N. Poe, Harry Ramanantoanina, J. Sperling, Hannah B. Wineinger, Brian M. Rotermund, J. Brannon, Zhuanling Bai, B. Scheibe, Nicholas B Beck, Brian N. Long, Samantha Justiniano, Thomas E. Albrecht‐Schönzart, Cristian Celis‐Barros   +12 more
semanticscholar   +1 more source

Ultrahigh Selective Colorimetric Quantification of Chromium(VI) Ions Based on Gold Amalgam Catalyst Oxidoreductase-like Activity in Water.

Analytical Chemistry, 2018
Hexavalent chromium ion (Cr6+) is one of the most toxic substances for plants, for animals, and is a confirmed human respiratory carcinogen. However, so far, there are few independent and efficient colorimetric methods for detection of Cr6+.
Xuehong Zhang, Wei Liu, Xuemei Li, Zhen Zhang, Duoliang Shan, Hong Xia, Shouting Zhang, Xiaoquan Lu   +7 more
semanticscholar   +1 more source

Some definable types that cannot be amalgamated [PDF]

Math. Log. Quart., 69: 46-49 (2023), 2022
We exhibit a theory where definable types lack the amalgamation property.
arxiv   +1 more source

Integrating tradition and innovation within a wine tourism and hospitality experience

International Journal of Tourism Research, Volume 25, Issue 1, Page 169-182, January/February 2023., 2023
Abstract This study explores the strategic choices among wineries involved in wine tourism experiences, including whether they rely on tradition, fully embrace innovation, or combine both. The study, conducted between December of 2018 and January of 2019, draws on face‐to‐face interviews with 32 owners/managers of New World wineries that, on average ...
Abel Duarte Alonso, Alessandro Bressan, Oanh Vu Thi Kim, Seng Kiat Kok, Erhan Atay   +4 more
wiley   +1 more source

Tropical surface gold mining: A review of ecological impacts and restoration strategies

Land Degradation &Development, Volume 33, Issue 18, Page 3661-3674, December 2022., 2022
Abstract Surface gold mining severely degrades landscapes, causing deforestation, soil erosion and displacement, and toxic contamination. The prevalence of both large‐scale and artisanal, small‐scale surface gold mining in the tropics has risen over recent decades.
Shrabya Timsina, Nora G. Hardy, David J. Woodbury, Mark S. Ashton, Susan C. Cook‐Patton, Rachel Pasternack, Meredith P. Martin   +6 more
wiley   +1 more source

Interactive effects of temperature and nitrogen source on the elemental stoichiometry of a polar diatom

Limnology and Oceanography, Volume 67, Issue 12, Page 2750-2762, December 2022., 2022
Abstract A recent study hypothesized that the near‐zero temperatures that generally prevail in Arctic waters negate the influence that different nitrogen (N) sources can otherwise have on the growth and elemental stoichiometry of marine micro‐algae. Here we test this hypothesis experimentally by evaluating how temperature (0–9°C) affects the growth and
Nicolas Schiffrine, Jean‐Éric Tremblay, Marcel Babin   +2 more
wiley   +1 more source