stone to nanoparticles

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stone to nanoparticles

Frontiers | Nanostructured Coatings for Stone Protection ...

The biocidal effectiveness of the nanoparticles was studied on stone surfaces by multispectral imaging, digital image analysis and optical coherence tomography. This is a low-cost and efficient ...

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(PDF) Enhancing the Durability of Calcareous Stone ...

The aim of this study is to evaluate the effectiveness of CaCO3 nanoparticles as a consolidation and protection material for calcareous stone monuments, when those nanoparticles used are dispersed ...

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Heritage | Free Full-Text | The Protection of Building ...

Marble and limestone have been extensively used as building materials in historical monuments. Environmental, physical, chemical and biological factors contribute to stone deterioration. The rehabilitation of stone damage and the delay of further deterioration is of utmost importance. Inorganic nanoparticles having chemical and crystallographic affinity with building materials is very ...

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In vivo antimicrobial activity of silver nanoparticles ...

Green silver nanoparticles of Phyllanthus amarus: as an antibacterial agent against multi drug resistant clinical isolates of Pseudomonas aeruginosa. J Nanobiotechnology. 2014;12(1):40. 64. Ahmad A, Wei Y, Syed F, et al. The effects of bacteria-nanoparticles interface on the antibacterial activity of green synthesized silver nanoparticles.

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Nanotechnology Introduction - UnderstandingNano

When the nanoparticle encounters a cancer cell it adheres to it and releases the drug into the cancer cell. This directed method of drug delivery has great potential for treating cancer patients while producing less side harmful affects than those produced by conventional chemotherapy. ... MEMS is a stepping stone to NEMS or Nano ...

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Fungal hydrophobins render stones impermeable for water ...

Coating of different lithotypes. Nanoparticles are increasingly exploited in many research fields, one which is the conservation of deteriorated stones.

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6. What are potential harmful effects of nanoparticles?

3.8 Toxicology of Nanoparticles. Studies specifically dealing with the toxicity of nanoparticles have only appeared recently and, although now emerging in the literature, are still rare. Data concerning the behaviour and toxicity of particles mainly comes from studies on inhaled nanoparticles (reviewed by Oberdörster G 1996, Oberdörster G et al 2005, Donaldson and Stone 2003, Borm 2002 ...

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The addition of silica nanoparticles on the mechanical ...

The stone powder and the silica nanoparticles were weighed using a precision digital scale (EC-301 SL; GAMA), and distilled water was measured using a 10 mL glass pipette (Satelit) as recommended by the stones' manufacturers and according to the test groups for the silica nanoparticles. The stones were mechanically spatulated under a vacuum ...

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US20070110816A1 - Method of coating nanoparticles - Google ...

Disclosed herein is a method of coating nanoparticles with a metal oxide. The method includes substituting surfaces of hydrophobic nanoparticles with an organic substance having a hydrophilic group effective to render the nanoparticles hydrophilic; and injecting the hydrophilic nanoparticles and a precursor of the metal oxide into an organic solvent including an amphiphilic surfactant to coat ...

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(PDF) Self-cleaning and de-polluting stone surfaces: TiO 2 ...

Self-cleaning and de-polluting stone surfaces: TiO 2 nanoparticles for limestone

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Zeolite-Encapsulated Ultrasmall Cu/ZnOx Nanoparticles for ...

Selective hydrogenation of CO2 to methanol is a "two birds, one stone" technology to mitigate the greenhouse effect and solve the energy demand–supply deficit. Cu-based catalysts can effectively catalyze this reaction but suffer from low catalytic stability caused by the sintering of Cu species. Here, we report a series of zeolite-fixed catalysts Cu/ZnOx(Y)@Na-ZSM-5 (Y is the mass ratios ...

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Reinforced dental plaster with low setting expansion and ...

Modified novel dental plaster reinforced by 10 wt.% aluminum oxide nanoparticle fillers could be used alternatively to the conventional improved stone (type IV) to be utilized as final cast and die materials with the highest surface microhardness and compressive strength and lowest setting expansion than that of the improved stone.

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Creating Structural Defects of Drug-Free Copper-Containing ...

motivate us to use the "one stone for two birds" strategy and devise an LDH-based multifunctional drug-free nanoplatform L. Sun, J. Wang, J. Liu, Dr. L. Li, Prof. Z. P. Xu Australian Institute for Bioengineering and Nanotechnology The University of Queensland Brisbane, QLD 4072, Australia E-mail: [email protected]; [email protected]

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Alcohol dispersions of calcium hydroxide nanoparticles for ...

Alcohol dispersions of Ca(OH)2 nanoparticles, the so-called nanolimes, are emerging as an effective conservation material for the consolidation of stone, mortars, and plasters present in old masonry and/or mural paintings. To better understand how this treatment operates, to optimize its performance …

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Stones to nanoparticles . . . and beyond

Download Citation | On May 1, 2010, Peter Maitlis published Stones to nanoparticles . . . and beyond | Find, read and cite all the research you need on ResearchGate

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Leaching of nanoparticles from nano-enabled products for ...

The development of highly innovative techniques and technologies to enhance performance and technical sustainability of materials used in the field of cultural heritage conservation is providing conservators with innovative nanocomposites materials, including protective coatings, by merging the performances of engineered nanoparticles (NPs) with conventional chemicals.

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Recirculating Air Filtration Significantly Reduces ...

BackgroundAirborne nanoparticles from vehicle emissions have been associated with adverse effects in people with pulmonary and cardiovascular disease, ... Donaldson K, Stone V. 2003. The role of free radicals in the toxic and inflammatory effects of four different ultrafine particle types. Inhal Toxicol 15:39-52 12476359.

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Synthesis of ZnO nanoparticles by sol gel method - YouTube

Sol Gel Method for the synthesis of ZnO nanoparticlesPlease join for free to our telegram group for discussion in all areas of nanotechnology: https://t.me/j...

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Nanoparticles – known and unknown health risks | Journal ...

Manmade nanoparticles range from the well-established multi-ton production of carbon black and fumed silica for applications in plastic fillers and car tyres to microgram quantities of fluorescent quantum dots used as markers in biological imaging. As nano-sciences are experiencing massive investment worldwide, there will be a further rise in consumer products relying on nanotechnology.

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Metabolic and Environmental Profiling and Imaging for ...

Nanoparticles, which have been observed in geological samples, have also been isolated from biological specimens, including kidney stones. These nanoparticles have certain properties that are consistent with a novel life form, including in vitro self-replication, and contain lipids, DNA and proteins.

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Effects of Airway Exposure to Nanoparticles on Lung ...

The LPS plus nanoparticle groups received LPS (2.5 mg/kg) combined with nanoparticles (4 mg/kg) in vehicle. The surface areas of 14-nm nanoparticles and 56-nm nanoparticles are 300 m 2 /g and 45 m 2 /g, respectively (disclosed by Degussa). Nanoparticles were autoclaved at 250°C for 2 hr before use.

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Creating Structural Defects of Drug‐Free Copper‐Containing ...

Layered double hydroxide nanoparticles (LDH NPs) with a unique layered structure, sheet-like morphology, anion exchange, and pH-sensitive properties are considered promising platforms for biomedical applications such as cancer diagnosis and treatment. ... These fascinating features motivate us to use the "one stone for two birds" strategy ...

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Stone consolidation with SiO2 nanoparticles: Effects on a ...

The effect of the nanoparticle fillers on the stone microstructure, in the first 5 mm from the treated surface, consisted of a slight reduction of the integral open porosity, passing from 31% to 28% after the treatment. In addition, a shift of the pore sizes towards smaller radii was observed . The porosimetric distribution of the stone before ...

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Nanotechnology In Medicine: Huge Potential, But What Are ...

Nanotechnology, the manipulation of matter at the atomic and molecular scale to create materials with remarkably varied and new properties, is a rapidly expanding area of research with...

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Adsorption polymer on reservoir rock and role of the ...

As researches have shown, nanoparticles have a major role in the case of polymer molecules adsorption on stones. In a classification, one can attribute this dependence to the following: (a) Polymer viscosity, (b) Nanoparticles' concentration, (c) Stone characteristics, (d) Reaction temperature, (e) Durability against stone and solution salinity.

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Antimicrobial engineered nanoparticles in the built ...

Nanoparticles (NPs) of metal oxides, sometimes referred to as engineered nanoparticles have been used to protect building surfaces against biofilm formation for many years, but their history in the Cultural Heritage world is rather short. Their first reported use was in 2010. Thereafter, a wealth of reports can be found in the literature, with Ti, Ag and Zn oxides being the major protagonists.

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Green Synthesis of Iron Nanoparticles: Application on the ...

Iron nanoparticles were produced using the extract of mortiño berry ( Vaccinium floribundum ) (vZVI) as reducing and stabilizer agent. Fresh nanoparticles were characterized using TEM, XRD, and FTIR techniques, while laboratory experiments were conducted to assess the removal of total petroleum hydrocarbons (TPHs) from water and soil after treatment with synthesized nanoscale iron particles.

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(PDF) Enhancing the Durability of Calcareous Stone ...

The aim of this study is to evaluate the effectiveness of CaCO3 nanoparticles as a consolidation and protection material for calcareous stone …

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Alcohol dispersions of calcium hydroxide nanoparticles …

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Silver nanoparticle - Wikipedia

Silver nanoparticles are nanoparticles of silver of between 1 nm and 100 nm in size. While frequently described as being 'silver' some are composed of a large percentage of silver oxide due to their large ratio of surface to bulk silver atoms. Numerous shapes of nanoparticles can be constructed depending on the application at hand.

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