Results 111 to 120 of about 8,194 (267)

A rapid transition from ice covered CO2–rich waters to a biologically mediated CO2 sink in the eastern Weddell Gyre [PDF]

, 2007
Circumpolar Deep Water (CDW), locally called Warm Deep Water (WDW), enters the Weddell Gyre in the southeast, roughly at 25° E to 30° E. In December 2002 and January 2003 we studied the effect of entrainment of WDW on the fugacity of carbon dioxide (fCO2)
Bakker, DCE, de Baar, HJW, Geibert, W, Hoppema, M, Schröder, M   +4 more
core   +2 more sources

High‐Concentration Hydrogen Peroxide Gels Containing Calcium Polyphosphate Associated With Violet Led Light: Bleaching Efficacy and Effects on Enamel Properties

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objectives To evaluate the effect of violet LED light (VL) and hydrogen peroxide (HP) in‐office bleaching gels supplemented with calcium polyphosphate (CaPP) or calcium gluconate (GU): Materials and Methods Bovine enamel blocks (n = 10) were randomly assigned: commercial HP gel, commercial HP gel with GU, or experimental 35% HP with or without
Hemanuelly Albuquerque dos Anjos, Débora Alves Nunes Leite Lima, Carolina Meneghin Barbosa, Klaus Rischka, Waldemir Francisco Vieira‐Junior   +4 more
wiley   +1 more source

Dynamics of refractory carbon in seagrass meadows [PDF]

, 2016
University of Technology Sydney. Faculty of Science.The protection and rehabilitation of natural landscapes in order to enhance their role in carbon sequestration is currently a hot topic for scientists and policymakers looking for solutions to reduce ...
Trevathan-Tackett, Stacey Marie
core  

Effects of Bleaching Protocols on the Esthetic Outcome and Surface Integrity of Enamel Treated With an Ammonia‐Free Silver Fluoride Solution

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective To investigate the effects of three bleaching protocols on the color stability and surface roughness of enamel previously treated with a water‐based, ammonia‐free silver fluoride solution (Riva Star Aqua). Materials and Methods Eighty‐eight human enamel/dentin specimens were demineralized and treated with Riva Star Aqua, divided into
Ahmed Alshawi, Fadimeana Lal, Esra Yildiz, Sevda Ozel Yildiz, Ugur Erdemir   +4 more
wiley   +1 more source

Influence of nanohydroxyapatite mouthwash on the growth of Candida albicans biofilm on milled denture surfaces: An in vitro study

Journal of Prosthodontics, EarlyView.
Abstract Purpose There is a need for effective solutions for the persistent prevalence of denture stomatitis (DS) in denture‐wearing populations. This study assessed the impact of nanohydroxyapatite (nanoHAP) nanoparticles on Candida albicans biofilm formation on milled polymethylmethacrylate (PMMA) denture bases.
Cynthia U. Udeh, Bennett T. Amaechi, Parveez A. Abdul‐Azees, Amos C. Obiefuna, Chun‐Yen Lin, Nahid IftiKhar, Sunil Mankar, Temitope O. Omosebi, Tejal Gohil   +8 more
wiley   +1 more source

An in vitro comparison of the enamel remineralisation potential of bioactive glass, hydroxyapatite and CPP-ACP [PDF]

, 2017
The objective of this research was to investigate the comparative in vitro enamel remineralisation potential of commercial toothpastes containing bioactive glass (BG) particles, hydroxyapatite (HAP) particles or casein phosphopeptide – amorphous calcium ...
Coleman, N. J., Gjorgievska, E. S., Guclu, Z. A.   +2 more
core   +1 more source

Cold comfort for change: Stream mats as biological indicators of ecosystem processes in the McMurdo Dry Valleys, Antarctica

Journal of Phycology, EarlyView.
Abstract Glacier‐fed streams (GFSs) make ideal systems for studying climate‐related changes. Some of the best‐studied GFSs are found in the McMurdo Dry Valleys (MDVs) of Antarctica, one of the Earth's coldest and driest deserts. Despite their harsh and isolated nature, MDV GFSs represent an oasis of life in a landscape visually devoid of it, with ...
Tyler J. Kohler, Ian Hawes, Adrian Howkins, Lydia H. Zeglin, Mike N. Gooseff, Diane M. McKnight   +5 more
wiley   +1 more source

Inflammatory and Immunological Basis of Periodontal Diseases

Journal of Periodontal Research, EarlyView.
The periodontal lesion emerges as an evolving immunological battlefield, where host–microbiome interactions, dysregulated immune responses, fragile resolution mechanisms, and inflammophilic dysbiosis converge to shift the balance from homeostasis to unrestrained tissue destruction.
Giacomo Baima, Marion Arce, Mario Romandini, Thomas Van Dyke   +3 more
wiley   +1 more source

Prevention of Erosion and Abrasion by a High Fluoride Concentration Gel Applied at High Frequencies [PDF]

, 2010
Ziel dieser Studie war es, den maximal erreichbaren Schutz des Zahnschmelzes nach Erosion und Erosion in Verbindung mit Abrasion durch hochkonzentriertes Fluoridgel mit zusätzlichem Fluorid aus Zahnpasta zu ...
Kohnke, Sabrina
core  

On the influence of marine biogeochemical processes over CO2 exchange between the atmosphere and ocean [PDF]

, 2018
The ocean holds a large reservoir of carbon dioxide (CO2), and mitigates climate change through uptake of anthropogenic CO2. Fluxes of CO2 between the atmosphere and surface ocean are regulated by a number of physical and biogeochemical processes ...
Arrigo, Balch, Capone, Chris J. Daniels, Culberson, Dickson, Dickson, Dickson, Dieter A. Wolf-Gladrow, Eric P. Achterberg, Frankignoulle, Gruber, Henson, Humphreys, Ito, Jones, Le Quéré, Lee, Lee, Lueker, Matthew P. Humphreys, Moisander, Morris, Morse, Poulton, Solomon, Takahashi, Takahashi, Takahashi, Tjiputra, Toby Tyrrell, van Heuven, van Vuuren, Wang, Wanninkhof, Weiss, Weiss, Wolf-Gladrow, Wu, Zeebe   +39 more
core   +3 more sources