Results 101 to 110 of about 499,982 (305)
Debris Evaluation after Root Canal Shaping with Rotating and Reciprocating Single-File Systems
Journal of Functional Biomaterials, 2016 This study evaluated the root canal dentine surface by scanning electron microscope (SEM) after shaping with two reciprocating single-file NiTi systems and two rotating single-file NiTi systems, in order to verify the presence/absence of the smear layer ...
Alberto Dagna +3 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal +3 more
wiley +1 more source
Cerebral Embolic Protection in Patients Undergoing Left Atrial Appendage Closure
Journal of Cardiovascular Development and Disease(1) Background: Cerebral magnetic resonance imaging has reported new cerebral ischemic lesions after left atrial appendage (LAA) closure in about one- third of patients. Stroke occurs predominantly periprocedurally.
Julia Seeger +5 more
doaj +1 more source
Cleaning Effectiveness of Three NiTi Rotary Instruments: A Focus on Biomaterial Properties
Journal of Functional Biomaterials, 2015 Nickel-titanium (NiTi) instruments are commonly used for shaping the root canal system in endodontic practice. They are more flexible and have better cutting efficiency than conventional stainless steel files.
Claudio Poggio +4 more
doaj +1 more source
Electrified Damage in Motion Systems
Advanced Engineering Materials, EarlyView.The electrified damage in motion systems is a fundamental framework presenting the degradation pathway arising from the coupling of electrical energy transport with mechanical contact and interfacial chemistry. The framework positions electrified damage as a distinct degradation regime with unique characteristic surface morphologies and failures of ...
M. Humaun Kabir +2 more
wiley +1 more source
Debris mitigation in geostationary earth orbit [PDF]
, 2004 Paper presented at Dynamics and Control of Systems and Structures in Space (DCSSS), 6th conference, Riomaggiore, Italy, July 2004The Inter-Agency Debris Committee recommendation for the reorbiting of geostationary satellites at the end of life ...
Laura Todd +3 more
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EcologiesThe Mar Piccolo is a transitional water system located in Taranto city (Southern Italy); it is a semi-enclosed basin affected by severe pollution issues due to the presence of various industrial, agricultural and other anthropic activities that require ...
Carmine Massarelli +2 more
doaj +1 more source
Albumin Protein Cleavage Affects the Wear and Friction of Ultra-High Molecular Weight Polyethylene
Lubricants, 2017 It is well established that the total protein concentration and albumin-to-globulin ratio influence the wear of ultra-high molecular polyethylene (UHMWPE, “polyethylene”) in joint prostheses.
Yasha Dwivedi +4 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco +8 more
wiley +1 more source
Ground-based optical position measurements of space debris in low earth orbits
, 2013 The increasing amount of space debris requires the satellite operators to handle a growing number of collision risk assessments in order to eventually perform collision avoidance manoeuvrers.
Hampf, Daniel +4 more
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