نتایج جستجو برای: localized material

تعداد نتایج: 463553  

Journal: :ACS nano 2014
Michael R Roenbeck Xiaoding Wei Allison M Beese Mohammad Naraghi Al'ona Furmanchuk Jeffrey T Paci George C Schatz Horacio D Espinosa

Understanding atomic interactions between constituents is critical to the design of high-performance nanocomposites. Here, we report an experimental-computational approach to investigate the adhesion energy between as-produced arc discharge multiwalled carbon nanotubes (MWCNTs) and graphene. An in situ scanning electron microscope (SEM) experiment is used to peel MWCNTs from graphene grown on c...

Journal: :IEEE International Conference on Robotics and Automation : ICRA : [proceedings]. IEEE International Conference on Robotics and Automation 2012
Brian C Becker Robert A Maclachlan Louis A Lobes Cameron N Riviere

Peeling delicate retinal membranes, which are often less than 5 µm thick, is one of the most challenging retinal surgeries. Preventing rips and tears caused by tremor and excessive force can decrease injury and reduce the need for follow up surgeries. We propose the use of a fully handheld microsurgical robot to suppress tremor while enforcing helpful constraints on the motion of the tool. Usin...

2004
A. Vaziri H. Nayeb-Hashemi H. R. Hamidzadeh

Dynamic response of single lap joints, subjected to a harmonic peeling load is studied theoretically and experimentally. In the theoretical part, dynamic response of a single lap joint clamped at one end and subjected to a harmonic peeling load at the other end is investigated. Adherents are modeled as Euler-Bernouli beams joined in the lap area by a viscoelastic adhesive layer. Both axial and ...

2012
Ramin Tadayoni Ivana Svorenova Ali Erginay Alain Gaudric Pascale Massin

AIMS To compare the retinal sensitivity and frequency of microscotomas found by spectral domain optical coherence tomography (SD-OCT) combined with scanning laser ophthalmoscopy (SLO) microperimetry after idiopathic macular hole closure, in eyes that underwent internal limiting membrane (ILM) peeling and eyes that did not. METHODS This was a retrospective, non-randomised, comparative study. C...

Journal: :ACS combinatorial science 2013
Jan Philipp Kollender Andrei Ionut Mardare Achim Walter Hassel

A WO3-Fe2O3 thin film combinatorial library was fabricated using a vapor phase co-deposition method followed by a combined thermal annealing and oxidation process. The scanning electron microscopy (SEM) analysis of the library microstructure combined with X-ray diffraction (XRD) investigations suggested that α-Fe2O3 grains preferentially grow from boundaries of domains, containing finer grains ...

2018
Katsutoshi Kokubun Sachiko Matsumura Masako Yudasaka Sumio Iijima Kiyotaka Shiba

Introduction Inorganic materials are widely used in medical devices, such as artificial hearts, vessels, and joints, in stents, and as nanocarriers for drug-delivery systems. Carbon nanomaterials are of particular interest due to their biological inertness and their capability to accommodate molecules. Several attempts have been proposed, in which carbon nanomaterials are used as nanocarriers f...

Journal: :Arthritis and rheumatism 2007
Guive Balooch Wei Yao Joel W Ager Mehdi Balooch Ravi K Nalla Alexandra E Porter Robert O Ritchie Nancy E Lane

OBJECTIVE Glucocorticoids (GCs) alter bone strength such that patients receiving these medications have a high rate of fragility-related fractures. The purpose of this study was to assess whether concurrent treatment with GCs (prednisolone) and risedronate (an aminobisphosphonate) would prevent the reduction in bone strength induced by GCs, in a mouse model of GC-induced bone loss and in patien...

A. Ghanizadeh H. Delavari Amrei M. M. Montazer-Rahmati M. R. Mehrnia

Volumetric techniques were employed to study the adsorption of CO2 on a purified multi-wall carbon nanotubes (MWNT’s) sample, as a mesoporous material, at isothermal conditions of 288, 293 and 298 K and pressures ranging from 30 to 150 kPa. Langmuir, Freundlich and Sips equations were used to represent the isotherms. Also the parameters of these fitted isotherm models have been determined. The ...

Journal: :Journal of Alzheimer's disease : JAD 2001
Ron Strohmeyer Joseph Rogers

A wide range of inflammatory mediators has been demonstrated in the Alzheimer’s disease (AD) brain during the past 15 years (for previous reviews, see [6, 279,298,340,343]). Questions nonetheless remain, including even the designation of AD inflammatory mechanisms as a true inflammatory response. Like multiple sclerosis, the cardinal signs of peripheral inflammation, the “rubor et tumor cum cal...

Journal: :International Journal of Nanoscience 2021

Digital Image Correlation (DIC) techniques can be used to visually map and measure strain in materials such as metals metallic alloys. The induced an American Society for Testing Materials (ASTMs) standard specimen measured using a DIC technique. patterns indicating the localized variations function of time constant load applied were also obtained. Results obtained technique more accurate compa...

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