نتایج جستجو برای: gold and silver nano structures

تعداد نتایج: 16911588  

A Shams, M Darabi S Ebrahimi

Background Prostate cancer is the second most common cancers in the world which causing harms and waste cost. Furthermore more prostate treatments are in effective and lead to male infertility. Purpose of this study was to evaluate the role gamma radiation with silver nano particles in treatment of human prostate cancer cell line in vitro. MaterialsAndMethods Human prostate cancer cell line DU1...

ژورنال: علمی شیلات ایران 2019

In this study, the toxicity of colloidal silver nanoparticles produced from three companies (US NANO, Pioneers, Nanonasb Pars) in the larvae of barnacles Amphibalanus amphitrite was evaluated using standard OECD. These crustaceans are important economically and ecologically. In this research, the LC50 within 24 hours for nauplius stages II, III, IV, V and VI examined against toxicity of the thr...

Journal: :international journal of nanoscience and nanotechnology 2008
anal k. jha k. prasad and a. r. kulkarni

a green low-cost and reproducible yeast mediated synthesis of silver nanoparticles is reported. the synthesis is performed at room temperature. x-ray and transmission electron microscopy analyses are performed to ascertain the formation of ag nanoparticles. nanoparticles almost spherical in shape having a size of 6-20 nm are found.

2012
José R. Parga Jesús L. Valenzuela José A. Díaz

The present chapter describes a new technology of pressure oxidation/cyanidation leaching for the dissolution of gold and silver and the recovery of the precious metals by using the electrochemical process of Electrocoagulation (EC). The novel method demonstrates that the oxidation and dissolution of gold and silver in alkaline cyanide solution can be conducted simultaneously in the same reacto...

2016
Tomohisa MATSUMOTO Kazuho FUKUDA Keiji UCHIKAWA

We investigated categorical regions and appearances of gold, silver and copper color, and glossiness for CG spheres with various chromaticities, lightnesses, and contrast glosses. It was found that the chromaticity regions of brown and yellow changed into gold color, those of gray and black into silver color, and a part of brown region changed into copper color with increase of contrast gloss. ...

2013
Kantha D Arunachalam Sathesh Kumar Annamalai Shanmugasundaram Hari

In this experiment, green-synthesized silver and gold nanoparticles were produced rapidly by treating silver and gold ions with an extract of Memecylon umbellatum leaf. The reaction process was simple and easy to handle, and was monitored using ultraviolet-visible spectroscopy. The effect of the phytochemicals present in M. umbellatum, including saponins, phenolic compounds, phytosterols, and q...

2013
Kantha D Arunachalam Sathesh Kumar Annamalai

The exploitation of various plant materials for the biosynthesis of nanoparticles is considered a green technology as it does not involve any harmful chemicals. The aim of this study was to develop a simple biological method for the synthesis of silver and gold nanoparticles using Chrysopogon zizanioides. To exploit various plant materials for the biosynthesis of nanoparticles was considered a ...

2004
Steven K. Volkman Yunan Pei David Redinger Shong Yin Vivek Subramanian

Low-resistance printed conductors are crucial for the development of ultra-low cost electronic systems such as radio frequency identification tags. Low resistance conductors are required to enable the fabrication of high-Q inductors, capacitors, tuned circuits, and interconnects. Furthermore, conductors of appropriate workfunction are also required to enable fabrication of printed Schottky diod...

Journal: :Nanoscale 2014
Víctor Sebastian Seung-Kon Lee Klavs F Jensen

Compared to freestanding nanoparticles, supported nanostructures typically show better mechanical stability as well as ease of handling. Unique shapes such as core-shells, raspberries and crescents have been developed on supported materials to gain improved chemical and optical properties along with versatility and tunability. We report the formation of hyper-branched gold structures on silica ...

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