منابع مشابه
Wear Particles Surface Identification Using Neural Network
This paper investigates the analysis of microscopic particles generated by wear mechanisms using image processing techniques. Particles are classified using their visual and morphological attributes to predict wear failure in engines and other machinery. The paper describes the stages of identification processing involved including a neural network system to classify wear articles in terms of t...
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Iron is essential element used for fundamental cell functions, catalyst for chemical reaction. We used scanning and transmission electron microscopy, energy-dispersive microanalysis, electron diffraction, UV and EPR measurements for investigation of iron particles in globus pallidus of human brain. Scanning electron microscopy revealed iron rich complexes with Na, Si, P, S, Cl, Ca and Cu. Trans...
متن کاملThe potential biohazards of nanosized wear particles at boneprosthesis interface
Much attention has been paid to the nanoparticles (NPs) that are produced for applications in various areas, such as semiconductor or metallic NPs used in the fabrication of components, polymer additives in packaging, tires or NPs for catalysts or in sunscreen formulations, and oxide NPs applied in our daily life. These NPs are produced in the environment and may penetrate into the human body t...
متن کاملThe influence of wear particles in the expression of osteoclastogenesis factors by osteoblasts.
Orthopedic implant failures are often associated with peri-implant osteolysis. Particles generated from the wear process have been suspected to play an important role in this situation. Indeed, the peri-implant osteolysis could be due to the presence of particles stimulating the osteoclastogenesis process. We hypothesize then that the presence of a low particle concentration positively influenc...
متن کاملWear particles enhance autophagy through up-regulation of CD147 to promote osteoclastogenesis
Objective(s): The study aimed to uncover the underlying mechanism linking wear particles to osteoclast differentiation, and we explored the effect of titanium particles of different sizes on CD147 expression and autophagy in macrophages. Materials and Methods: Effects of titanium particles on CD147 and RANKL mRNA were detected by QPCR; protein level of CD147 and Beclin-1 were detected by Wester...
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ژورنال
عنوان ژورنال: Journal of the Japan Society of Precision Engineering
سال: 1968
ISSN: 0374-3543
DOI: 10.2493/jjspe1933.34.586