Results 11 to 20 of about 329,129 (244)

Volatile elements in alkaline and calc-alkaline rocks from the Colima graben, Mexico: Constrains on their genesis and evolution

Geofísica Internacional, 1993
Tomando esencialmente como base la composición química de los elementos mayores, tres diferentes grupos de rocas fueron reconocidos en el graben de Colima: El grupo alcalino, calcialcalino y calcialcalino rico en potasio.
José Luis Macías, Bruno Capaccioni, Sandro Conticelli, Luciano Giannini, Marino Martini, Sergio Rodríguez   +5 more
doaj   +1 more source

Surface Structure Study of Crystal Hydroxy-Apatite from Fluorosis Enamels

Journal of Dentistry Indonesia, 2013
Fluorosis is a condition due to ingestion of excessive amounts of fluor which can cause the change in tooth structure and strength. However, there is still lack of explanation on the surface structure of crystal hydroxyapatite that influences the ...
Abdillah Imron Nasution, Harun Asyiq Gunawan, Sri Angky Soekanto   +2 more
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Engineering by Cuts: How Kirigami Principle Enables Unique Mechanical Properties and Functionalities

Advanced Science, 2023
Kirigami, the ancient art of paper cutting, has evolved into a design and fabrication framework to engineer multi‐functional materials and structures at vastly different scales.
Jiayue Tao, Hesameddin Khosravi, Vishrut Deshpande, Suyi Li   +3 more
doaj   +1 more source

Amplification of GaSb-Based Diode Lasers in an Erbium-Doped Fluoride Fibre Amplifier

IEEE Photonics Journal, 2023
Building upon recent advances in GaSb-based diode lasers and Er-doped fluoride fibre technologies, this article demonstrates for the first time the fibre-based amplification of mid-infrared diode lasers in the wavelength range around 2.78 $\mu$m.
Nikolai B. Chichkov, Amit Yadav, Franck Joulain, Solenn Cozic, Semyon V. Smirnov, Leon Shterengas, Julian Scheuermann, Robert Weih, Johannes Koeth, Sven Hofling, Ulf Hinze, Samuel Poulain, Edik U. Rafailov   +12 more
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Skuteczność zastosowania substancji biologicznie czynnych w łagodzeniu stresu wywołanego przez fluorek sodu na podstawie parametrów morfologicznych, biochemicznych i fizjologicznych u pszenicy jarej (Triticum aestivum L.) odmiany Bryza

Agronomy Science, 2017
Rośliny w trakcie swojego wzrostu i rozwoju stale są narażone na wpływ czynników stresowych. Jednym z tych czynników jest zanieczyszczenie środowiska związkami fluoru.
BEATA SMOLIK, JUSTYNA PELC
doaj   +1 more source

Liberación del ion flúor de un cemento de ionómero vítreo modificado con extracto etanólico de propóleo

Odontología Sanmarquina, 2021
Objetivo. El objetivo de este estudio fue cuantificar la liberación de flavonoides y flúor en probetas de ionómero vítreo convencional tipo II modificado con extracto de propóleo. Métodos. Fueron utilizadas 60 unidades de análisis.
Melisa Raquel Lezcano, María Eugenia Zamudio   +1 more
doaj   +1 more source

A Soft Robotic Gripper for Crop Harvesting: Prototyping, Imaging, and Model-Based Control

AgriEngineering
The global agricultural sector faces escalating labor shortages and post-harvest losses, particularly in delicate crop handling. This study introduces an integrated soft robotic harvesting system addressing these challenges through four key innovations ...
Yalun Jiang, Javad Mohammadpour Velni
doaj   +1 more source

The effect of monofluorophosphate implant in white rat mothers towards the level of fluor in the incisors of their young babies (Rattus-rattus)

Dental Journal, 2010
Background: Fluoride has been widely used in the prevention of dental caries for a long time. To prevent dental caries, fluoride must be induced in low amount at high frequency.
Widjijono Widjijono
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Răspândirea cariei dentare în unele unități administrativ-teritoriale din Republica Moldova

One Health & Risk Management, 2023
Introducere. Fluorul este un oligoelement esenţial pentru creşterea și dezvoltarea normală a oaselor şi a dinţilor. Organismul uman poate primi acest element din plante, în special din ceai, din peşte oceanic şi din oricare alt aliment pregătit în apă ...
Natalia BIVOL
doaj  

Retenção oral do flúor em crianças com diferentes experiências da doença cárie após escovação com um dentifrício de baixa concentração

Revista da Faculdade de Odontologia de Porto Alegre, 2006
O objetivo do presente estudo foi avaliar a retenção oral do fluoreto em crianças com e sem experiência da doença cárie após a escovação com um dentifrício de baixa concentração de fluoreto. O estudo clínico foi randomizado e cego, que avaliou a retenção
Juliana de Kássia e Silva BRAGA, Paulo Roberto CAVALCANTE, Auro Atsushi x CAVALCANTE, Cecilia Claudia Costa RIBEIRO   +3 more
doaj   +9 more sources