نتایج جستجو برای: stiffness of nano membrane

تعداد نتایج: 21203320  

Journal: :Nature Materials 2021

The stiffness of the basement membrane is a determinant process metastasis and patient survival. Netrin-4 now shown to be key regulator stiffness.

The current study presents synthesis and characterization of high impact polystyrene - TiO2 nanoparticles mixed matrix membranes for separation of carbon dioxide from nitrogen. The solution-casting method was used for preparation of membranes. The nano mixed matrix membranes were characterized using scanning electron microscopy to ensure the suitable dispersion of nano particles in high impact ...

Journal: :international journal of nano dimension 0
f. golbabaei kootenaei department of environmental engineering, university of tehran, tehran, iran; member of young researchers club, islamic azad university, qaemshahr branch, iran m. ramezani young researchers club, qaemshahr branch, islamic azad university, qaemshahr, iran h. aminirad department of civil & environmental engineering, babol noshirvani university of technology, babol, iran s. ahmadi department of chemistry, faculty of science, islamic azad university, tonekabon branch, tonekabon, iran khalil pourshamsian department of chemistry, faculty of science, islamic azad university, tonekabon branch, tonekabon, iran m. fallahnejad department of environmental engineering, university of tehran, tehran, iran

hospital wastewater has special importance since having pathogens, radioactive materials, pharmaceutical wastes and heavy metals. removing them into environment without any treatment may cause serious problems for the public health. membrane biological reactor is the combination of the activated sludge and membrane filters. this research has investigated the performance of the nano-filtration i...

Journal: :The Journal of the Acoustical Society of America 1991
E S Olson D C Mountain

Basilar membrane stiffness measurements were made in the base of the gerbil cochlea. Basilar membrane stiffness was determined by contacting the basilar membrane with a stainless steel needle (tip diameter 25 microns) attached to a force transducer, putting the needle/transducer structure through a low-frequency sinusoidal excursion with amplitude 5 or 25 nm, and measuring the restoring force e...

Ali Akbar Babaluo, Elham Jannatdoust Majid Peyravi Masoumeh Akhfash Adrestani Pejman Ahmadian Namini

In this work, a simple and effective way to modify the support surface is developed and a nanostructure ceramic support to facilitate deposition of a defect-free overlying micro and meso (nano) porous membrane is obtained. To achieve high performance nanocomposite membranes, average pore size of outer surface of support was reduced by dip-coating in submicron and nano α-alumina slurries. In...

Journal: :mechanics of advanced composite structures‎ 2014
mahmood mehrdad shokrieh masood esmkhani amir reza haghighatkhah

in the present study, the effect of various weight fractions of graphene nanoplatelet (gpl) on flexural fatigue behavior of epoxy polymer has been investigated at room temperature and generally the temperature was monitored on the surface of specimen during each test. the flexural stiffness of grapheme nano-platelet/epoxy nanocomposites at 0.1, 0.25 and 0.5 wt. % as a main effective parameter o...

2006
Siqun Wang Seung-Hwan Lee William T.Y. Tze Tim Rials George M. Pharr

Cellulose fibers, cell wall fragments and cellulose microfibrils can be used as reinforced materials for biocomposite manufacture. Understanding nano-mechanical properties of those materials will be very useful to show their full theoretical potential. Nanoindentation testing is a technique that determines the mechanical properties of a material in the sub-micron/nano scale. The test involves p...

A. H. Korayem A. K. Hoshiar M. H. Korayem S. Badrlou

   During past decade the AFM based nanomanipulation has been focus of attention as the promising nano fabrication approach. The main challenge in this process is the real-time monitoring. Consequently, the dynamic models have been proposed as a solution to the existing challenge. In the modeling approach the magnitudes of the forces are proportional to the stiffness coefficients o...

M Raki M.M Najafizadeh, P Yousefi

In present study, the third-order shear deformation theory has been developed to investigate vibration analysis of FG Nano-plates based on Eringen nonlocal elasticity theory. The materials distribution regarding to the thickness of Nano-plate has been considered based on two different models of power function and exponential function. All equations governing on the vibration of FG Nano-plate ha...

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