نتایج جستجو برای: silver resistance

تعداد نتایج: 419228  

2015
Mini Mol Menamparambath C. Muhammed Ajmal Kwang Hee Kim Daejin Yang Jongwook Roh Hyeon Cheol Park Chan Kwak Jae-Young Choi Seunghyun Baik

Silver nanowires have attracted much attention for use in flexible transparent conductive films (TCFs) due to their low sheet resistance and flexibility. However, the haze was too high for replacing indium-tin-oxide in high-quality display devices. Herein, we report flexible TCFs, which were prepared using a scalable bar-coating method, with a low sheet resistance (24.1 Ω/sq at 96.4% transmitta...

The Myco silver nanoparticles (AgNPs) are synthesized through bio-reduction reaction of silver nitrate by cell-free filtrate of endophytic fungi, which act as both reducing and capping agent. The synthesis of silver nanoparticles (AgNPs) was confirmed through UV-VIS spectroscopy, Fourier Transform Infrared (FTIR), Transmission Electron Microscope (TEM), Scanning Electron Microscope (SEM). Energ...

2013
Anh Thi Ngoc Dao Derrick M. Mott Koichi Higashimine Shinya Maenosono

Platinum coated by silver nanoparticles was synthesized, which displays a unique structure where polycrystalline platinum particles are completely encapsulated in continuous monocrystalline silver shells. These particles display accentuated electronic properties, where the silver shells gain electron density from the platinum cores, imparting enhanced properties such as oxidation resistance. Th...

2017
Mohamed Ibrahim Shaalan Magdy Mohamed El-Mahdy Sarah Theiner Mansour El-Matbouli Mona Saleh

BACKGROUND Antibiotic resistance is a global issue that threatens public health. The excessive use of antibiotics contributes to this problem as the genes of antibiotic resistance can be transferred between the bacteria in humans, animals and aquatic organisms. Metallic nanoparticles could serve as future substitutes for some conventional antibiotics because of their antimicrobial activity. The...

The mechanism of plasmid mediated silver (Ag) resistance was investigated in Acinetobacter baumanniiBL54. The intracellular accumulation of Ag in both original strain BL54 and Escherichia coli K12transconjugant containing plasmid pUPI276 began immediately and reached a maximum within 60 minutes.This initial accumulation was followed by net loss of Ag which reached a maximum wi...

Journal: :British medical journal 1979
K Bridges A Kidson E J Lowbury M D Wilkins

In 1977-8 gentamicin-resistant strains of Pseudomonas aeruginosa became very common in a burns unit, over 90% being resistant at the peak of the outbreak. Some strains were also resistant to silver nitrate, though silver resistance was not found in any other strains of Ps aeruginosa isolated. Unlike the gentamicin resistance, the silver resistance was unstable, and strains became sensitive on r...

A Japoni, A. Alborzi M. Hayati S.A. Abbasian Sh. Farshad

Background: Pseudomonas aeruginosa, as an etiological agent, has a prominent infection role in serious burned patients. Burned patients usually treated with antiseptic ointments such as silver sulfadiazine (SSD). This study evaluated the effectiveness of 1% SSD and different concentrations of silver nitrate solution (SNS) on resistant isolates of P. aeruginosa. Methods: Three groups of P. aerug...

2013
SHIVARAJ NINGANAGOUDA VANDANA

Objective: To develop a reliable, ecofriendly procedure for bioreduction of silver nanoparticles by Aspergillus flavus. Methods: Characterization was done by using UV-VIS spectrophotometry, Infrared spectroscopy (FT-IR) and X-ray diffraction. Results: IR spectroscopy showed the potential biomolecule responsible for the reduction of silver nanoparticles and stability of the bioreduced silver nan...

Journal: :Journal of dental research 1969
L N Johnson K Asgar F A Peyton

An etch resistance phase was found in dental silver amalgam when the amalgam was examined metallographically. This phase was common to the silver alloy ingot as well as to its prepared amalgam. Qualitative electron microprobe technics were used to identify this phase. Quantitative electron microprobe analysis defined it as the R' phase of the copper-tin system or the intermetallic compound Cu6Sn5.

  Background and purpose: Microbial resistance against antibiotics is increasingly growing, therefore, it is necessary to develop new remedies. Silver nanoparticles have significant antibacterial properties and synthesis of silver nanoparticles mediated by plant extracts could be considered as an alternative in treatment in various infections. Materials and methods: In this study, silver nano...

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