keyword
MENU ▼
Read by QxMD icon Read
search

Nano particle

keyword
https://www.readbyqxmd.com/read/28339189/polymerization-induced-self-assembly-pisa-control-over-the-morphology-of-19f-containing-polymeric-nano-objects-for-cell-uptake-and-tracking
#1
Wei Zhao, Hang Thu Ta, Cheng Zhang, Andrew Keith Whittaker
Fluorine-containing polymeric materials are receiving increasing attention as imaging probes in fluorine-19 magnetic resonance imaging (19F MRI), for example to enable quantitative in vivo detection of cells. Here we describe the one-pot polymerization synthesis of 19F-containing functional poly(OEGA-co-TFEA)-b-poly(St-co-VBA) copolymers as a new class of fluorinated MRI agent. A range of nanoparticle morphologies, including spheres, worm-like particles and vesicles were formed as a consequence of polymerization-induced self-assembly (PISA)...
March 24, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28335369/effect-of-nano-sio%C3%A2-on-the-hydration-and-microstructure-of-portland-cement
#2
Liguo Wang, Dapeng Zheng, Shupeng Zhang, Hongzhi Cui, Dongxu Li
This paper systematically studied the modification of cement-based materials by nano-SiO₂ particles with an average diameter of about 20 nm. In order to obtain the effect of nano-SiO₂ particles on the mechanical properties, hydration, and pore structure of cement-based materials, adding 1%, 3%, and 5% content of nano-SiO₂ in cement paste, respectively. The results showed that the reaction of nano-SiO₂ particles with Ca(OH)₂ (crystal powder) started within 1 h, and formed C-S-H gel. The reaction speed was faster after aging for three days...
December 15, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335342/innovative-self-cleaning-and-biocompatible-polyester-textiles-nano-decorated-with-fe-n-doped-titanium-dioxide
#3
Ionela Cristina Nica, Miruna Silvia Stan, Anca Dinischiotu, Marcela Popa, Mariana Carmen Chifiriuc, Veronica Lazar, Gratiela G Pircalabioru, Eugenia Bezirtzoglou, Ovidiu G Iordache, Elena Varzaru, Iuliana Dumitrescu, Marcel Feder, Florin Vasiliu, Ionel Mercioniu, Lucian Diamandescu
The development of innovative technologies to modify natural textiles holds an important impact for medical applications, including the prevention of contamination with microorganisms, particularly in the hospital environment. In our study, Fe and N co-doped TiO₂ nanoparticles have been obtained via the hydrothermal route, at moderate temperature, followed by short thermal annealing at 400 °C. These particles were used to impregnate polyester (PES) materials which have been evaluated for their morphology, photocatalytic performance, antimicrobial activity against bacterial reference strains, and in vitro biocompatibility on human skin fibroblasts...
November 15, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335333/plant-mediated-green-synthesis-of-cuo-nanoparticles-comparison-of-toxicity-of-engineered-and-plant-mediated-cuo-nanoparticles-towards-daphnia-magna
#4
Sadia Saif, Arifa Tahir, Tayyaba Asim, Yongsheng Chen
Research on green production methods for metal oxide nanoparticles (NPs) is growing, with the objective to overcome the potential hazards of these chemicals for a safer environment. In this study, facile, ecofriendly synthesis of copper oxide (CuO) nanoparticles was successfully achieved using aqueous extract of Pterospermum acerifolium leaves. P. acerifolium-fabricated CuO nanoparticles were further characterized by UV-Visible spectroscopy, field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray (EDX), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and dynamic light scattering (DLS)...
November 9, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335222/effects-of-atomization-injection-on-nanoparticle-processing-in-suspension-plasma-spray
#5
Hong-Bing Xiong, Cheng-Yu Zhang, Kai Zhang, Xue-Ming Shao
Liquid atomization is applied in nanostructure dense coating technology to inject suspended nano-size powder materials into a suspension plasma spray (SPS) torch. This paper presents the effects of the atomization parameters on the nanoparticle processing. A numerical model was developed to simulate the dynamic behaviors of the suspension droplets, the solid nanoparticles or agglomerates, as well as the interactions between them and the plasma gas. The plasma gas was calculated as compressible, multi-component, turbulent jet flow in Eulerian scheme...
May 20, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335216/investigation-of-the-structural-electrical-and-optical-properties-of-the-nano-scale-gzo-thin-films-on-glass-and-flexible-polyimide-substrates
#6
Fang-Hsing Wang, Kun-Neng Chen, Chao-Ming Hsu, Min-Chu Liu, Cheng-Fu Yang
In this study, Ga₂O₃-doped ZnO (GZO) thin films were deposited on glass and flexible polyimide (PI) substrates at room temperature (300 K), 373 K, and 473 K by the radio frequency (RF) magnetron sputtering method. After finding the deposition rate, all the GZO thin films with a nano-scale thickness of about 150 ± 10 nm were controlled by the deposition time. X-ray diffraction patterns indicated that the GZO thin films were not amorphous and all exhibited the (002) peak, and field emission scanning electron microscopy showed that only nano-scale particles were observed...
May 10, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335197/cationic-nanoparticles-assembled-from-natural-based-steroid-lipid-for-improved-intracellular-transport-of-sirna-and-pdna
#7
Ruilong Sheng, Xiaoqing Zhuang, Zhao Wang, Amin Cao, Kaili Lin, Julian X X Zhu
Developing new functional biomaterials from biocompatible natural-based resources for gene/drug delivery has attracted increasing attention in recent years. In this work, we prepared a series of cationic nanoparticles (Diosarg-DOPE NPs) by assembly of a natural steroid diosgenin-based cationic lipid (Diosarg) with commercially-available helper lipid 1,2-dioleoyl-sn-glycero-3-phosphorethanolamine (DOPE). These cationic Diosarg-DOPE NPs were able to efficiently bind siRNA and plasmid DNA (pDNA) via electrostatic interactions to form stable, nano-sized cationic lipid nanoparticles instead of lamellar vesicles in aqueous solution...
April 13, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28332482/development-of-novel-silk-fibroin-polyvinyl-alcohol-sol-gel-bioactive-glass-composite-matrix-by-modified-layer-by-layer-electrospinning-method-for-bone-tissue-construct-generation
#8
B N Singh, K Pramanik
The worldwide occurrence of bone tissue related defects as well as diseases and lack of successful perpetual cure has attracted attention and accelerated exploration of composite scaffolding material with superior bioactivity, osteoinductivity and osteoconductivity properties. Among such biomaterials, silk fibroin and bioglass composite attained special emphasis to develop tissue engineered construct with a hierarchical structure ranging from nano to microscale thereby mimicking bone tissue extracellular matrix...
March 23, 2017: Biofabrication
https://www.readbyqxmd.com/read/28332480/honey-bee-hairs-and-pollenkitt-are-essential-for-pollen-capture-and-removal
#9
Guillermo J Amador, Marguerite Matherne, D'Andre Waller, Megha Mathews, Stanislav N Gorb, David L Hu
While insect grooming has been observed and documented for over one hundred years, we present the first quantitative analysis of this highly dynamic process. Pollinating insects, like honey bees, purposely cover themselves with millions of pollen particles that, if left ungroomed, would make sensing and controlled flight difficult. How do they get clean? We show that the hairs on insect eyes are tuned to the pollen they collect; namely, the hairs are spaced so that they suspend pollen above the body for easy removal by the forelegs...
March 23, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28326861/cutaneous-applied-nano-zno-reduce-the-ability-of-hair-follicle-stem-cells-to-differentiate
#10
Wei Ge, Yong Zhao, Fang-Nong Lai, Jing-Cai Liu, Yuan-Chao Sun, Jun-Jie Wang, Shun-Feng Cheng, Xi-Feng Zhang, Li-Lan Sun, Lan Li, Paul W Dyce, Wei Shen
The ability of metal oxide nanoparticles to penetrate the skin has aroused a great deal of interest during the past decade due to concerns over the safety of topically applied sunscreens that contain physical UV-resistant metal particles, such as nano-Zinc oxide (nZnO). Previous studies demonstrate that metal oxide nanoparticles accumulate in skin furrows and hair follicles following topical application while little is known about the consequence of these nanoparticles on skin homeostasis. The current investigation tested the effects of nZnO (0...
March 22, 2017: Nanotoxicology
https://www.readbyqxmd.com/read/28326784/drop-impact-on-oblique-superhydrophobic-surfaces-with-two-tier-roughness
#11
Rui Zhang, Pengfei Hao, Feng He
This paper investigates the complex physical phenomenon of oblique drop impact on superhydrophobic substrates with two-tier roughness (patterned with varied submillimeter-scale posts and coated with nano-particles). Experimental results show that the impact Weber number of drops and the solid fraction of the submillimeter-scale post structures are crucial for the outcomes of oblique drop collisions. Water droplets with 10<Wen<245 are found to rebound on all the test substrates. As the surface solid fraction decreases, four possible bouncing patterns occur in sequence, sliding rebound, stretched rebound, penetration rebound and breakup rebound...
March 22, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28325308/inspired-by-efficient-cellulose-dissolving-system-facile-one-pot-synthesis-of-biomass-based-hydrothermal-magnetic-carbonaceous-materials
#12
Jian-Feng Ma, Jian-Xiong Xing, Kun Wang, Hai-Yan Yang, Ben-Hua Fei, Xing-E Liu
The core-shell structure of carbon encapsulated magnetic nanoparticles (CEMNs) displays unique properties. Enhancing the magnetization of iron core, in parallel, improving the encapsulation of carbon shell are the two major challenges in the synthesis of CEMNs. Inspired by efficient cellulose-dissolving system, carbon encapsulated magnetic nano-Fe3O4 particles (Fe3O4@C) with ∼10.0nm Fe3O4 cores and 1.9-3.3nm carbon shell, were successfully one-pot synthesized via a novel hydrothermal carbonization (HTC) process...
May 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28324629/electrospun-nerve-guide-scaffold-of-poly-%C3%AE%C2%B5-caprolactone-collagen-nano-bioglass-an-in-vitro-study-in-peripheral-nerve-tissue-engineering
#13
Forouzan Mohamadi, Somayeh Ebrahimi-Barough, Mohammad Reza Nourani, Mohammad Ali Derakhshan, Vahabodin Goodarzi, Mohammad Sadegh Nazockdast, Mehdi Farokhi, Roksana Tajerian, Reza Faridi Majidi, Jafar Ai
In among of various methods, nerve tissue engineering (NTE) is one of the applicable methods to reconstruct damaged nerve tissues. Electrospinning technique and biomaterials are often considered to fabricate fibrous tissue engineered conduits which have great similarity to the extracellular matrix on fiber structure. Polymer blending is one of the most effective methods for production of new materials with outstanding features. In this research, conduit structures as main part of the peripheral nerve regeneration based on polymer blend nanocomposites PCL/Collagen/NBG (poly (ε-caprolactone)/Collagen/nano bioglass) were manufactured by electrospinning technique...
March 21, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28317988/using-single-nanoparticle-tracking-obtained-by-nanophotonic-force-microscopy-to-simultaneously-characterize-nanoparticle-size-distribution-and-nanoparticle-surface-interactions
#14
Delyan R Hristov, Dong Ye, Joao Medeiros de Araújo, Colby Ashcroft, Brian DiPaolo, Robert Hart, Christopher Earhart, Hender Lopez, Kenneth A Dawson
Comprehensive characterization of nanomaterials for medical applications is a challenging and complex task due to the multitude of parameters which need to be taken into consideration in a broad range of conditions. Routine methods such as dynamic light scattering or nanoparticle tracking analysis provide some insight into the physicochemical properties of particle dispersions. For nanomedicine applications the information they supply can be of limited use. For this reason, there is a need for new methodologies and instruments that can provide additional data on nanoparticle properties such as their interactions with surfaces...
March 20, 2017: Nanoscale
https://www.readbyqxmd.com/read/28317716/a-nano-delivery-system-for-bioactive-ingredients-using-supercritical-carbon-dioxide-and-its-release-behaviors
#15
Wenbei Situ, Xianliang Song, Shucan Luo, Yan Liang
For the purpose of ensuring the bioavailability of bioactive ingredients, a nano-delivery system with low toxicity was developed using supercritical carbon dioxide (SC-CO2). Compared to thin-film hydration (TFH), obtaining nano-scale liposomes is easier using SC-CO2. The characteristic of these liposomes was also demonstrated by the analysis of particle size and morphology. An in vitro release study showed that liposomes produced using SC-CO2 were resistant to low pH in simulated gastric conditions. In a simulated intestinal environment, enteric solubility of these liposomes was enhanced, which are important properties for controlled releasing bioactive ingredient...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28316409/facile-synthesis-of-multifunctional-silver-nanoparticles-using-mangrove-plant-excoecaria-agallocha-l-for-its-antibacterial-antioxidant-and-cytotoxic-effects
#16
R Bhuvaneswari, R John Xavier, M Arumugam
The current study describes a simple, rapid and eco-friendly method for the synthesis of silver nanoparticles (AgNPs) using Excoecaria agallocha (E. agallocha) leaf extract as stabilizer, bioreductant and capping agent. Synthesized AgNPs were characterized by UV-Visible spectroscopy (UV-Vis), X-ray diffraction (XRD), fourier transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FESEM) and energy dispersive X-ray spectroscopy (EDX). Generation of AgNPs was initially confirmed with the color change from yellow to dark brown which produces intense absorbance spectra at 440 nm in UV-Vis spectroscopy without any shifting of peaks...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28314369/formulation-and-drug-loading-features-of-nano-erythrocytes
#17
Xiaoting Dong, Yawei Niu, Yi Ding, Yuemin Wang, Jialan Zhao, Wei Leng, Linghao Qin
Nano erythrocyte ghosts have recently been used as drug carriers of water-soluble APIs due to inherit biological characteristics of good compatibility, low toxicity, and small side-effect. In this study, we developed a novel drug delivery system based on nano erythrocyte ghosts (STS-Nano-RBCs) to transport Sodium Tanshinone IIA sulfonate (STS) for intravenous use in rat. STS-Nano-RBCs were prepared by hypotonic lysis and by extrusion methods, and its biological properties were investigated compared with STS injection...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28314363/raman-and-luminescent-spectra-of-sulfonated-zn-phthalocyanine-enhanced-by-gold-nanoparticles
#18
V Kavelin, O Fesenko, H Dubyna, C Vidal, T A Klar, C Hrelescu, L Dolgov
Sulfonated Zn phthalocyanine, as a prospective photosensitizer in the photodynamic therapy of tumors, is investigated by means of Raman, infrared, and fluorescence spectroscopies. Conventional and surface-enhanced spectra from this photosensitizer are obtained and compared. Gold nano-islands attached to silica cores (Au-SiO2) are proposed as nanostructures providing plasmonically enhanced signals. Pronounced enhancement of Raman and infrared spectral bands from sulfonated Zn phthalocyanine allows their more convenient assignment with vibrational modes of sulfonated Zn phthalocyanine...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28304060/bio-inspired-hybrid-nanoparticles-promote-vascularized-bone-regeneration-in-a-morphology-dependent-manner
#19
Gaojie Yang, Haoming Liu, Xixi Hu, Zetao Chen, Thor E Friis, Jianglin Wang, Yin Xiao, Shengmin Zhang
Current major obstacles for translating the nanoparticle (NP) morphology-related function into therapeutic purposes come from the challenges in understanding the mechanisms that determine cell lineage commitment and constructing a NP-based 3D functional structure, and few studies have successfully demonstrated clear evidence of regulating in vivo tissue regeneration by NP morphology so far. Here, we show that nanoparticle geometry can be harnessed to mediate bone regeneration in a rat cranial defect model. We successfully synthesized hydroxyapatite NPs with well-defined morphologies using a modified liquid-solution-solid (LSS) method...
March 17, 2017: Nanoscale
https://www.readbyqxmd.com/read/28301814/engineered-nano-particles-nature-behavior-and-effect-on-the-environment
#20
REVIEW
Linee Goswami, Ki-Hyun Kim, Akash Deep, Pallabi Das, Satya Sundar Bhattacharya, Sandeep Kumar, Adedeji A Adelodun
Increased application of engineered nano particles (ENPs) in production of various appliances and consumer items is increasing their presence in the natural environment. Although a wide variety of nano particles (NPs) are ubiquitously dispersed in ecosystems, risk assessment guidelines to describe their ageing, direct exposure, and long-term accumulation characteristics are poorly developed. In this review, we describe what is known about the life cycle of ENPs and their impact on natural systems and examine if there is a cohesive relationship between their transformation processes and bio-accessibility in various food chains...
March 13, 2017: Journal of Environmental Management
keyword
keyword
78230
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"