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112 results for “Silver nanoparticles”
Experimental data for "Deep Learning Methods for Colloidal Silver Nanoparticle Concentration and Size Distribution Determination from UV-Vis Extinction Spectra"
<p>Testing data (experimental data) for neural networks published in preprint https://doi.org/10.48550/arXiv.2404.10891</p> <p>The UV-VIS-NIR spectral data was also used in the dissertation of Nadzeya Khinevch, titled "Two-dimensional structures of nanoparticles for elements of surface-enhanced Raman scattering substrates".</p> <p>Emails of the corresponding authors:</p> <p>Tomas Klinavičius tomas.klinavicius@ktu.lt</p> <p>Tomas Tamulevičius tomas.tamulevicius@ktu.lt</p>
The Immunomodulatory Effect of Silver Nanoparticles in a Retinal Inflammatory Environment
<p>Activation of immune response plays an important role in the development of retinal diseases. One of the main populations of immune cells contributing to the retinal homeostasis are microglia, which represent a population of residential macrophages. However, under pathological conditions, microglia become activated and rather support a harmful inflammatory reaction and retinal angiogenesis. Therefore, targeting these cells could provide protection against retinal neuroinflammation and neovascularization. In the recent study, we analyzed effects of silver nanoparticles (AgNPs) on microglia in vitro and in vivo. We showed that the AgNPs interact in vitro with stimulated mouse CD45/CD11b positive cells (microglia/macrophages), decrease their secretion of nitric oxide and vascular endothelial growth factor, and regulate the expression of genes for Iba-1 and interleukin-1β (IL-1β). In our in vivo experimental mouse model, the intravitreal application of a mixture of proinflammatory cytokines tumor necrosis factor-α, IL-1β and interferon-γ induced local inflammation and increased local expression of genes for inducible nitric oxide synthase, IL-α, IL-1β and galectin-3 in the retina. This stimulation of local inflammatory reaction was significantly inhibited by intravitreal administration of AgNPs. The application of AgNPs also decreased the presence of CD11b/Galectin-3 positive cells in neuroinflammatory retina, but did not influence viability of cells and expression of gene for rhodopsin in the retinal tissue. These data indicate that AgNPs regulate reactivity of activated microglia in the diseased retina and thus could provide a beneficial effect for the treatment of several retinal diseases.</p>
Silver Nanoparticles Alter Cell Viability Ex Vivo and in Vitro and Induce Proinflammatory Effects in Human Lung Fibroblasts
<p>Dataset for data generated and presented in following article by Löfdahl et al in Nanomaterials 2020, 10, 1868. doi:10.3390/nano10091868</p>
Simulation file for "Titanium dioxide and silver nanoparticles air emissions risk assessment for spray coating processes in Witek, Italy – A case study"
<p>Underlying data for “Nanosized titanium dioxide particle emission potential from a commercial indoor air purifier photocatalytic surface – A case study”</p>
X-ray scattering Datasets of gold and silver nanoparticle composites, relating to the publication "Gold and silver dichroic nanocomposite in the quest for 3D printing the Lycurgus cup"
<p>Wide-range X-ray scattering datasets and analyses for all samples described in the 2020 publication "Gold and silver dichroic nanocomposite in the quest for 3D printing the Lycurgus cup". These datasets are composed by combining multiple small-angle x-ray scattering and wide-angle x-ray scattering curves into a single dataset. They have been analyzed using McSAS to extract polydispersities and volume fractions. They have been collected using the MOUSE project (instrument and methodology). </p> <p> </p>
Composite of graphene and silver nanoparticles obtained by low-dose gamma irradiation
<p>Content:</p> <p>TEM.zip - TEM images of composites, file type .tif and .dm3</p> <p>VINCA_FTIR.zip - FTIR data of graphene oxide and exfoliated graphene, file type .csv</p> <p>VINCA_UV-Vis.zip - FTIR data of graphene oxide and exfoliated graphene composites, file type .csv</p> <p>IEMN_VNA_Graphene-AgNP - EMI shielding measurement of graphene oxide and exfoliated graphene composites, file type .xlsx</p> <p>VINCA_CA_graphene-AgNP.jpg - contact angle measurement of graphene oxide and exfoliated graphene composites</p> <p>VINCA_532nmLASER.zip - temperature elevation measurements of graphene oxide and exfoliated graphene composites, file type .csv</p> <p>FTPO_TGA_Graphene-AgNP.zip - TGA data of graphene oxide and exfoliated graphene composites, file type .txt</p> <p> </p> <p> </p>
Fig. 3 in Tannic acid-modified silver nanoparticles enhance the anti-ACanthamoeba activity of three multipurpose contact lens solutions without increasing their cytotoxicity
Fig. 3 Anti-Acanthamoeba activity of AgTANPs conjugated with ReNu MultiPlus contact lens solution after 6 h of incubation in relation to cytotoxicity
Fig. 5 a–d Acanthamoeba trophozoites after 6 h in Tannic acid-modified silver nanoparticles enhance the anti-ACanthamoeba activity of three multipurpose contact lens solutions without increasing their cytotoxicity
Fig. 5 a–d Acanthamoeba trophozoites after 6 h of incubation. a Control culture in PYG medium. b Incubation with AgTANPs. c Incubation with SCA. d Incubation with AgTANPs conjugated with SCA.The arrow shows a rounded form. All images (× 40) represent the population of treated amoebae and were taken under a live cell imaging microscope (EVOS FLoid Cell Imaging Station). For abbreviations, see Figs. 1 and 2
Fig. 2 in Tannic acid-modified silver nanoparticles enhance the anti-ACanthamoeba activity of three multipurpose contact lens solutions without increasing their cytotoxicity
Fig. 2 Anti-Acanthamoeba activity of AgTANPs conjugated with Solo Care Aqua (SCA) contact lens solution after 6 h of incubation in relation to cytotoxicity
Fig. 4 in Tannic acid-modified silver nanoparticles enhance the anti-ACanthamoeba activity of three multipurpose contact lens solutions without increasing their cytotoxicity
Fig. 4 Anti-Acanthamoeba activity of AgTANPs conjugated with Opti-Free contact lens solution after 6 h of incubation in relation to cytotoxicity
Fig. 1 in Tannic acid-modified silver nanoparticles enhance the anti-ACanthamoeba activity of three multipurpose contact lens solutions without increasing their cytotoxicity
Fig. 1 High-resolution scanning transmission electron microscopy image of the distribution and diameters of the tannic acid-modified silver nanoparticles (AgTANPs)
Figure 4 in Synthesis of silver nanoparticles using Lactobacillus bulgaricus and assessment of their antibacterial potential
Figure 4. Absorption spectrum of AgNPs synthesized by Lactobacillus bulgaricus having clear peak at 410 nm.
Figure 2 in Synthesis of silver nanoparticles using Lactobacillus bulgaricus and assessment of their antibacterial potential
Figure 2. Lactobacillus bulgaricus synthesis of Ag-NPs: (a) AgNO3 (control); (b) Reaction mixture before synthesis; (c) Reaction mixture after synthesis.
Figure 1 in Synthesis of silver nanoparticles using Lactobacillus bulgaricus and assessment of their antibacterial potential
Figure 1. Morphological and microscopic properties of Lactobacillus bulgaricus. (a) Lactobacillus stained with gram stain under light microscope (X100); (b) Lactobacillus on MRS agar medium, 37 °C, 48 h.
Figure 7 in Synthesis of silver nanoparticles using Lactobacillus bulgaricus and assessment of their antibacterial potential
Figure 7. Antibacterial effect of Ag-NPs and antibiotics against (a) Staphylococcus epidermis (b) Salmonella (c) Staphylococcus aureus.
Figure 5 in Synthesis of silver nanoparticles using Lactobacillus bulgaricus and assessment of their antibacterial potential
Figure 5. SEM of silver nanoparticles synthesized by Lactobacillus bulgaricus. The shape of AgNPs was spherical and size between (30- 100 nm), magnification (16053×, 17876×, 15568×, and 9742 ×), the voltage (5 kV) and spot size 4 for (a), (b), (c) and (d) respectively.
Figure 5 in Silver nanoparticles as a potential nematicide against Meloidogyne graminicola
Figure 5: (A) Scanning electron microscope (SEM) micrographs of rice roots without silver nanoparticles (AgNP) treatment, (B) energy-dispersive X-ray spectroscopic elemental analysis of rice roots without AgNP, (C) SEM micrographs of rice roots with AgNP, and (D) energydispersive X-ray spectroscopic elemental analysis of rice roots with AgNP.
Figure 4 in Silver nanoparticles as a potential nematicide against Meloidogyne graminicola
Figure 4: (A) Rice seedlings grown in soilless medium, (B) root mats of different treatments showing galls, and (C-F) magnified view of root mats showing galls.
Figure 1 in Silver nanoparticles as a potential nematicide against Meloidogyne graminicola
Figure 1: Silver nanoparticles (AgNP) characterization (A) ultra violet-visible (UV–Vis) absorption spectra exhibiting 417 nm absorbance related to surface plasmon resonance of AgNP, (B) X-ray diffractogram showing the different reflections from crystalline planes of AgNP, indicating the formation of face-centered cubic (FCC) structure of AgNP, (C) transmission electron microscopy (TEM) image showing the formation of poly-dispersed spherical AgNP with average size of 20 nm, and (D) high resolution TEM image of single AgNP of 25 nm showing characteristic inter-planar spacing of silver (Ag).
Figure 3 in Silver nanoparticles as a potential nematicide against Meloidogyne graminicola
Figure 3: Effect of silver nanoparticles (AgNP) on root galling by MelOidOgyne graminiCOla on rice seedlings in soilless system. The experiment was repeated, the Trial×Treatment interaction was not significant (P>0.05). Data are means of two trials. All treatments had 10 replications randomized completely.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.