نتایج جستجو برای: sonication conditions

تعداد نتایج: 850823  

2010
Cynthia Washam

The use of engineered nanomaterials has grown dramatically over the past decade as the pharmaceutical, electronics, and other industries leverage these materials’ unique physical and chemical properties. In environmental circles, nanomaterials have aroused concern because, even as their use burgeons, their impact on animal and plant life remains largely unknown. Moreover, scientists studying th...

2015
RIZAFIZAH OTHAMAN YEON HUI YUAN MUNTAZ ABU BAKAR

Microsized aerogels were prepared from epoxidized natural rubber (ENR)/polyvinyl chloride (PVC) matrix blend using the solvent exchange method and dropping technique with sonication. Some parameters were manipulated in order to observe its effects on resultant aerogels. Parameter studied were ENR/PVC solution viscosity, ratio of ENR/PVC solution to EtOH/H 2 O solution and sonication time.It was...

Nasser Zare, Parisa Sheikhzadeh Rasool Asghari-Zakaria Roghayeh Ahmadpour,

An efficient Agrobacterium-mediate transformation method was developed by employing different duration of sonication, Agrobacterium strains, type of inoculation medium and concentrations of acetosyringone in Arya cultivar of wheat. Immature embryos were used as an explant for inoculation with Agrobacterium tumefaciens harboring the recombinant pBI121 plasmid. Among the durations of sonication t...

2010
Julia R. Barrett

The use of engineered nanomaterials has grown dramatically over the past decade as the pharmaceutical, electronics, and other industries leverage these materials’ unique physical and chemical properties. In environmental circles, nanomaterials have aroused concern because, even as their use burgeons, their impact on animal and plant life remains largely unknown. Moreover, scientists studying th...

2013
Ludovic Dumée Kallista Sears Jürg Schütz Niall Finn Mikel Duke Stephen Gray

The effect of sonication temperature on the debundling of carbon nanotube (CNT) macro-bundles is reported and demonstrated by analysis with different particle sizing methods. The change of bundle size over time and after several comparatively gentle sonication cycles of suspensions at various temperatures is reported. A novel technique is presented that produces a more homogeneous nanotube disp...

2013
Yunhua Shi Lingling Ren Dianqing Li Huifang Gao Bing Yang

The sonication-driven dispersion of single-walled carbon nanotubes (SWCNTs) in aqueous surfactant solution has been monitored by UV-vis-NIR spectroscopy and scanning electron microscopy. Dispersion of SWCNTs experiments reveal that the maximum concentration of dispersed SWCNTs corresponds to the maximum UV-vis-NIR absorbance of the solution. With higher surfactant concentration the dispersion r...

2018
Rossella Arrigo Rosalia Teresi Cristian Gambarotti Filippo Parisi Giuseppe Lazzara Nadka Tzankova Dintcheva

The aim of this work is the investigation of the effect of ultrasound treatment on the structural characteristics of carbon nanotubes (CNTs) and the consequent influence that the shortening induced by sonication exerts on the morphology, rheological behaviour and thermo-oxidative resistance of ultra-high molecular weight polyethylene (UHMWPE)-based nanocomposites. First, CNTs have been subjecte...

2009
Kadir Aslan Yongxia Zhang Chris D. Geddes

A new bioassay technique, sonication-assisted metalenhanced fluorescence, which is based on the combined use of ultrasound waves and metal-enhanced fluorescence (MEF), is reported. In this technique, low-intensity ultrasound waves significantly reduce the bioassay time by creating a temperature gradient between the bulk and the surface, which is thought to result in a mass transport of biomolec...

Journal: :Ultrasound in medicine & biology 2007
Harold R Azencott Gary F Peter Mark R Prausnitz

To assess the cell wall's role as a barrier to intracellular delivery, wild-type Chlamydomonas reinhardtii algal cells and mutant cells lacking a cell wall were exposed to electroporation or sonication. Flow cytometry determined intracellular uptake of calcein and bovine serum albumin (BSA) and loss of cell viability as functions of electroporation transmembrane potential and acoustic energy. E...

2017
Frederike M J Reischies Robert Krause Judith Holzer Fabian Tiefenbacher Raimund Winter Gertraud Eylert Tobias Meikl Alexandru Tuca Martin J Köfer Lars P Kamolz David B Lumenta

BACKGROUND Different research groups have identified microorganisms on breast implants by sonication with significant correlation to the rate of capsular contracture. This substantiated the hypothesis of an infectious etiology of capsular contracture. However, no clinical consequence has been drawn from these results yet. Aim of this study was to review sonication results from breast implants a...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید