Modeling molecular effects on plasmon transport: Silver nanoparticles with tartrazine

2011 ◽  
Vol 134 (8) ◽  
pp. 084101 ◽  
Author(s):  
Christopher Arntsen ◽  
Kenneth Lopata ◽  
Michael R. Wall ◽  
Lizette Bartell ◽  
Daniel Neuhauser
Keyword(s):  
Silver Nanoparticles ◽  
Molecular Effects

scholarly journals Molecular Effects of Silver Nanoparticles on Monogenean Parasites: Lessons from Caenorhabditis elegans

2020 ◽  
Vol 21 (16) ◽  
pp. 5889
Author(s):  
Citlalic A. Pimentel-Acosta ◽  
Jorge Ramírez-Salcedo ◽  
Francisco Neptalí Morales-Serna ◽  
Emma J. Fajer-Ávila ◽  
Cristina Chávez-Sánchez ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Caenorhabditis Elegans ◽  
Expression Profiles ◽  
Mechanisms Of Action ◽  
Biological Processes ◽  
Microarray Hybridization ◽  
Genomic Information ◽  
Nematode Caenorhabditis Elegans ◽  
Metazoan Parasites ◽  
Molecular Effects

The mechanisms of action of silver nanoparticles (AgNPs) in monogenean parasites of the genus Cichlidogyrus were investigated through a microarray hybridization approach using genomic information from the nematode Caenorhabditis elegans. The effects of two concentrations of AgNPs were explored, low (6 µg/L Ag) and high (36 µg/L Ag). Microarray analysis revealed that both concentrations of AgNPs activated similar biological processes, although by different mechanisms. Expression profiles included genes involved in detoxification, neurotoxicity, modulation of cell signaling, reproduction, embryonic development, and tegument organization as the main biological processes dysregulated by AgNPs. Two important processes (DNA damage and cell death) were mostly activated in parasites exposed to the lower concentration of AgNPs. To our knowledge, this is the first study providing information on the sub-cellular and molecular effects of exposure to AgNPs in metazoan parasites of fish.

QUASI-MOLECULAR EFFECTS IN ION-ATOM COLLISIONS AT ION ENERGIES IN THE HUNDRED-keV REGION

1979 ◽  
Vol 40 (C1) ◽  
pp. C1-246-C1-249
Author(s):  
E. G. Bøving ◽  
K. Edlund ◽  
G. Sørensen
Keyword(s):  
Ion Energies ◽  
Molecular Effects

Synthesis, performance and growth mechanism of silver nanoparticle coated SERS fiber probe

2019 ◽  
Vol 107 (3) ◽  
pp. 305
Author(s):  
Mengmei Geng ◽  
Yuting Long ◽  
Tongqing Liu ◽  
Zijuan Du ◽  
Hong Li ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Absorption Spectrum ◽  
Reaction Time ◽  
Growth Mechanism ◽  
Fiber Optic ◽  
Fiber Optic Probe ◽  
Visible Absorption ◽  
Fiber Probe ◽  
Surface Enhanced Raman ◽  
Optic Probe

Surface-enhanced Raman Scattering (SERS) fiber probe provides abundant interaction area between light and materials, permits detection within limited space and is especially useful for remote or in situ detection. A silver decorated SERS fiber optic probe was prepared by hydrothermal method. This method manages to accomplish the growth of silver nanoparticles and its adherence on fiber optic tip within one step, simplifying the synthetic procedure. The effects of reaction time on phase composition, surface plasmon resonance property and morphology were investigated by X-ray diffraction analysis (XRD), ultraviolet-visible absorption spectrum (UV-VIS absorption spectrum) and scanning electron microscope (SEM). The results showed that when reaction time is prolonged from 4–8 hours at 180 °C, crystals size and size distribution of silver nanoparticles increase. Furthermore, the morphology, crystal size and distribution density of silver nanoparticles evolve along with reaction time. A growth mechanism based on two factors, equilibrium between nucleation and growth, and the existence of PVP, is hypothesized. The SERS fiber probe can detect rhodamin 6G (R6G) at the concentration of 10−6 M. This SERS fiber probe exhibits promising potential in organic dye and pesticide residue detection.

The cellular and molecular effects of the androgen receptor agonist, Cl-4AS-1, on breast cancer cells

2016 ◽  
Author(s):  
Mamoun Ahram ◽  
Ebtihal Mustafa ◽  
Shatha Abu Hammad ◽  
Mariam Hodhod ◽  
Malek Zihlif
Keyword(s):  
Breast Cancer ◽  
Androgen Receptor ◽  
Cancer Cells ◽  
Receptor Agonist ◽  
Breast Cancer Cells ◽  
Molecular Effects

The Effect of Silver Nanoparticles on Blood Cells in Rats

2012 ◽  
Vol 1 (1) ◽  
Author(s):  
S. Rezaei-Zarchi ◽  
M. Taghavi-Foumani ◽  
S. Razavi Sheshdeh ◽  
M. Negahdary ◽  
G. Rahimi
Keyword(s):  
Silver Nanoparticles ◽  
Blood Cells
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