Results 11 to 20 of about 50,108 (265)
A Test Not Hard to Swallow [PDF]
Clinical Chemistry, 2018 Which cancer is as lethal as pancreatic cancer, kills more people than ovarian cancer, and has quadrupled in incidence during the past 3 decades? An underappreciated killer—esophageal adenocarcinoma. “Esophageal adenocarcinoma has gone from being a tumor that was never seen to being commonplace,” states Sanford (Sandy) Markowitz, Professor of Cancer ...
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Hardness relationship between eNM3A10 and conventional hardness scales
Measurement: Sensors, 2021 Small ball rebound hardness eNM3A10 is a next-generation rebound hardness test with features not existing in conventional rebound hardness tests: reduced mass effect of hardness and satisfying the similarity rule of hardness (Minimum thickness of steel ...
Takashi Yamamoto +2 more
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Acta Odontologica Turcica, 2017 Objective: The aim of this study was to compare the effects of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) and 1.23% acidulated phosphate fluoride (APF; pH 3.5) on the microhardness of enamel treated with a bleaching agent. Materials and
Mügem Aslı Gürel Ekici +3 more
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Preparation and Properties of Sn-TiO2 nanocomposite coatings [PDF]
MATEC Web of Conferences, 2022 Sn-TiO2 nanocomposite coatings were prepared by sol-gel enhanced electrodeposition technique and the effect of c concentration on the performance of the composite coatings was investigated by adding different volumes of TiO2 sol to the electrolyte.
Zhang Shengping
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Some 3CNF properties are hard to test [PDF]
Proceedings of the thirty-fifth annual ACM symposium on Theory of computing, 2003 Summary: For a Boolean formula \(\phi\) on n variables, the associated property \(P_\phi\) is the collection of \(n\)-bit strings that satisfy \(\phi\). We study the query complexity of tests that distinguish (with high probability) between strings in \(P_\phi\) and strings that are far from \(P_\phi\) in Hamming distance.
Eli Ben-Sasson +2 more
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Evaluation of photo-activation appliances used in dentistry [PDF]
RGO: Revista Gaúcha de Odontologia, 2008 Objective: Verify the Vickers microhardness promoted by three photo-activation appliances: one Halogen Light Ultralux (Dabi-Atlante, Ribeirão Preto, Brazil) and two Light Emitting Diodes.
Thales Ribeiro de Magalhães Filho +5 more
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A fiber detector radiation hardness test [PDF]
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2000 An intense 146 MeV/c pion beam was stopped inside a scintillating fiber detector made out of 12 planes with 16 pixels each, where every pixel consists out of 8 times 8 scintillating fibers of 500 mkm diameter dense packed. The detector was irradiated for 52 hours to more than 1 Mrad at its center.
Baehr, Juergen +3 more
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Basic mechanical properties of layered steels
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2013 This article deals with identifying attributes of layered steel materials (damask steel) with the help of mechanical tests. Experimentally verify basic mechanical properties of layered steel and subsequently assessed it in comparison with the values ...
Michal Černý +3 more
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Testing Expressibility Is Hard [PDF]
, 2010 We study the expressibility problem: given a finite constraint language Γ on a finite domain and another relation R, can Γ express R? We prove, by an explicit family of examples, that the standard witnesses to expressibility and inexpressibility (gadgets/formulas/conjunctive queries and polymorphisms respectively) may be required to be exponentially ...
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Effects of Brushing Simulation on the Surface Roughness, Microhardness and Colour Stability of Indirect Composite Resin and Polyetheretherketone Polymer: An In-vitro Study [PDF]
Journal of Clinical and Diagnostic ResearchIntroduction: Indirect composite and Polyetheretherketone (PEEK) are widely used in restorative dentistry due to their favourable mechanical and aesthetic properties. However, their durability under simulated brushing conditions, which mimic routine oral
Bhavini Nahata +4 more
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