نتایج جستجو برای: nano sized

تعداد نتایج: 94235  

Journal: :Environmental science & technology 2009
Rebecca A French Astrid R Jacobson Bojeong Kim Sara L Isley R Lee Penn Philippe C Baveye

The extensive use of titanium dioxide nanoparticles (nano-TiO2) in many consumer products has raised concerns about possible risks to the environment The magnitude of the threat may depend on whether nano-TiO2 remains dispersed in the environment, or forms much larger-sized aggregates or clusters. Currently, limited information is available on the issue. In this context, the purpose of the pres...

2016
Keiji Okuda Hai Ying Fu Takashi Matsuzaki Ryo Araki Shota Tsuchida Punniyakoti V. Thanikachalam Tatsuya Fukuta Tomohiro Asai Masaki Yamato Shoji Sanada Hiroshi Asanuma Yoshihiro Asano Masanori Asakura Haruo Hanawa Hiroyuki Hao Naoto Oku Seiji Takashima Masafumi Kitakaze Yasushi Sakata Tetsuo Minamino

Immunosuppressive agents are used for the treatment of immune-mediated myocarditis; however, the need to develop a more effective therapeutic approach remains. Nano-sized liposomes may accumulate in and selectively deliver drugs to an inflammatory lesion with enhanced vascular permeability. The aims of this study were to investigate the distribution of liposomal FK506, an immunosuppressive drug...

Journal: :Molecules 2017
Kuo-Tseng Li Ling-Huey Wu

Supported olefin polymerization catalysts can prevent reactor-fouling problems and produce uniform polymer particles. Constrained geometry complexes (CGCs) have less sterically hindered active sites than bis-cyclopentadienyl metallocene catalysts. In the literature, micrometer-sized silica particles were used for supporting CGC catalysts, which might have strong mass transfer limitations. This ...

Journal: :Applied sciences 2022

Copper nanoparticles are being applied in the biosensors, engineering, electronic devices, and technology fields. A key advantage of nanomaterials is that their properties differ from bulk with same composition. However, application nano-copper particles for jewelry artwork has not yet been revealed. We discovered compared nano-sized copper fabrication micro-copper particles. The nano- micro-si...

In this project, Bredigite (BG) has been successfully prepared by a modified sol-gel method. Optimization in calcination temperature and mechanical ball milling resulted in a pure and nano-sized powder which characterized by means of X-ray diffraction; scanning electron microscopy, transmission electron microscopy and Fourier transform infrared Spectroscopy. We hypothesized that nano-sized Bred...

There are only a handful reports about the sensor systems having the ability of detecting the existence of the noble gases. Chemical reluctance of these gaseous species causes them to have no chemical interactions like hydrogen bonding with the chemically designed nano-sized sensors. Noble gasses usually have no atomic charges nor do change the total polarity of the molecular sensor systems. Th...

Journal: Journal of Nanoanalysis 2014
Ali Mohajeri, Laleh Shirazi Yahya Zamani

Nano-sized iron-based catalyst was prepared by the micro-emulsion method. The composition of the final nano-sized iron catalyst, in term of the atomic ratio contains: 100Fe/4Cu/2Ce. Experimental techniques of XRD, BET, TEM and TPR were used to study the phase, structure and morphology of the catalyst. Fischer-Tropsch Synthesis (FTS) reaction test was performed in a fixed bed reactor at pressure...

A. Mostafapour S. T. Khandani

Friction stir processing was applied for fabricating an aluminum alloy based hybrid nano composite reinforced with nano sized Al2O3 and micro sized graphite particles. A mixture of Al2O3 and graphite particles was packed into a groove with 1 mm width and 4.5 mm depth, which had been cut in 5083 aluminum plate of 10 mm thick. Packed groove was subjected to friction stir processing in order to im...

2017
Shunsuke Katsuki Tetsuya Matoba Jun-ichiro Koga Kaku Nakano Kensuke Egashira

Coronary artery disease, in the development of which inflammation mediated by innate immune cells plays a critical role, is one of the leading causes of death worldwide. The 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors (statins) are a widely used lipid-lowering drug that has lipid-independent vasculoprotective effects, such as improvement of endothelial dysfunction, antioxidant pr...

Journal: :Nanoscale 2015
Saurabh Bajaj Michael G Haverty Raymundo Arróyave William A Goddard Sadasivan Shankar

Phase diagrams of multi-component systems are critical for the development and engineering of material alloys for all technological applications. At nano dimensions, surfaces (and interfaces) play a significant role in changing equilibrium thermodynamics and phase stability. In this work, it is shown that these surfaces at small dimensions affect the relative equilibrium thermodynamics of the d...

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