نتایج جستجو برای: silver resistance

تعداد نتایج: 419228  

Journal: :The Analyst 2012
Farkhondeh Fathi François Lagugné-Labarthet David B Pedersen Heinz-Bernhard Kraatz

Electrochemical cycling of silver surfaces in the presence of the organophosphonates paraoxon and malathion leads to changes in the electrochemical response of silver and the formation of silver nanostructures. Adsorption of the organophosphonates onto the silver surfaces causes a significant reduction in the observed current response due to an increase in the charge transfer resistance. Surfac...

2014
Sumaira Ashraf Mariyam Asghar Chatha Wardah Ejaz Hussnain Ahmed Janjua Irshad Hussain

Lysozyme, an antibacterial enzyme, was used as a stabilizing ligand for the synthesis of fairly uniform silver nanoparticles adopting various strategies. The synthesized particles were characterized using UV-visible spectroscopy, FTIR, dynamic light scattering (DLS), and TEM to observe their morphology and surface chemistry. The silver nanoparticles were evaluated for their antimicrobial activi...

2014
VANMATHI SELVI T. SIVAKUMAR

Human beings are often infected by microorganisms such as bacteria, molds, yeasts, and viruses present in their living environments. Because of the emergence and increase in the number of multiple antibiotic-resistant microorganisms and the continuing emphasis on health-care costs, many scientists have researched methods to develop new effective antimicrobial agents that overcome the resistance...

2011
Cai-Hong Liu Xun Yu

The fabrication of transparent, conductive, and uniform silver nanowire films using the scalable rod-coating technique is described in this study. Properties of the transparent conductive thin films are investigated, as well as the approaches to improve the performance of transparent silver nanowire electrodes. It is found that silver nanowires are oxidized during the coating process. Incubatio...

2013
C. MARTINEZ

Silver scurf is a surface blemish disease of potato (Solanum tuberosum L.) tubers, caused by Helminthosporium solani Durieu & Mont., which has gained increasing economic importance in recent years. The disease develops initially in the field but fully expands in the warehouse under storage conditions favourable to the spread of the pathogen. Control of the disease, once provided by the fungicid...

2011
N. LKHAGVAJAV I. YAŞA E. ÇELİK M. KOIZHAIGANOVA Ö. SARI

In this study, the antimicrobial activity of colloidal silver nanoparticles prepared by the sol-gel method was investigated, and the turbidity, viscosity and pH of the colloidal solutions were determined. The size of the silver nanoparticles was measured by Atomic Force Microscopy (AFM). The minimum inhibitory concentration (MIC) value of the colloidal solution resistance to test microorganisms...

Today, drug resistance is one of the major problems in fight against cancer. Therefore, combination of therapeutic strategies was raised to effectively improve disease prognosis. In this regard, silver nanoparticles (AgNPs) are considered significant due to their anticancer properties. This study aimed to return sensitivity to cisplatin to A2780 cisplatin-resistance cell lines in the presence o...

2012
Ching-Hsi Lin Shih-Peng Hsu Wei-Chih Hsu

The screen-printed silver (Ag) thick-film is the most widely used front side contact in industrial crystalline silicon solar cells. The front contacts have the roles of efficiently contacting with the silicon (Si) and transporting the photogenerated current without adversely affecting the cell properties and without damaging the p-n junction. Although it is rapid, has low cost and is simplicity...

2008
J. Pollanen H. Choi

We have developed a novel procedure for constructing high surface area silver sinter heat exchangers. Our recipe incorporates nylon fibers having a diameter of ∼ 50 μm and thin wires of bulk silver in the heat exchanger. In order to increase the thermal conductance of liquid helium within the heat exchanger, prior to sintering, the nylon fibers are dissolved with an organic acid leaving a netwo...

2013
Ritika Chauhan Abhishek Kumar Jayanthi Abraham

The biological approach to synthesize metal nanoparticles is an important aspect of current nanotechnology research. Silver nanoparticles have been well-known for their inhibitory and antimicrobial effects. The ever-increasing antibiotic resistance in pathogenic and opportunistic microorganisms is a major threat to the health care industry. In the present investigation, silver nanoparticles hav...

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