نتایج جستجو برای: nano particles

تعداد نتایج: 201027  

Journal: :nutrition and food sciences research 0
yadullah edalatpanah dehdasht freshteh rahdan dehdasht abolfazl nematipour dehdasht mohammad ghasem keshavarz khoob iraj bahrebare dehdasht mahshid zahedi zadeh dehdasht

background and objectives: zinc oxide (zno) nano-particles have been proven to have strong antibacterial activity against food borne pathogens. the practical applications of different concentrations (control, 0, 1, 2, 4, 6 and 8 mm) of zno suspensions containing 1% acetic acid were investigated against the pathogenic bacteria like staphylococcus aureus. materials and methods: the projects of la...

Journal: :international journal of nano dimension 0
ali ghamartale department of nano chemical engineering, faculty of advanced technologies, shiraz university, shiraz, iranسازمان اصلی تایید شده: دانشگاه شیراز (shiraz university) rahmatollah saboori department of nano chemical engineering, faculty of advanced technologies, shiraz university, shiraz, iranسازمان اصلی تایید شده: دانشگاه شیراز (shiraz university) samad sabbaghi department of nano chemical engineering, faculty of advanced technologies, shiraz university, shiraz, iranسازمان اصلی تایید شده: دانشگاه شیراز (shiraz university)

a high pressure drop happens when heavy oil with high viscosity moves through the oil pipeline. a variety of methods to avoid this pressure drop is available. one of which is injection of chemicals to reduce the viscosity and ultimately reduce pressure drop. using the pipesim software, the effect of dispersion of nano and micro-particles into the oil has been simulated to study the amount of th...

Journal: :iranian journal of radiation research 0
e. hamid sales islamic azad university, varamin branch, faculty of agriculture, department of food industry, varamin, iran s. rajabifar agricultural, medical and industrial research school (amirs), karaj, iran f. motamedi sedeh agricultural, medical and industrial research school (amirs), karaj, iran

background: saffron, the dried stigmas of crocus sativus, is the world's most expensive spice which has been used as food additive and flavoring agent. the aim of the present study has been to investigate the combination effects of gamma irradiation and silver nano particles packing on the chemical properties of saffron during storage time. a combination of hurdles can ensure stability and...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Francisco J Martinez-Veracoechea Daan Frenkel

A key challenge in nano-science is to design ligand-coated nano-particles that can bind selectively to surfaces that display the cognate receptors above a threshold (surface) concentration. Nano-particles that bind monovalently to a target surface do not discriminate sharply between surfaces with high and low receptor coverage. In contrast, "multivalent" nano-particles that can bind to a larger...

2014
Kazuhiro Yamamoto

Industrial applications of nano-particles are reported in many fields recently. Regulation of nano-materials is also discussed in Organization for Economic Co-operation and Development (OECD). European Union (EU) announced the definition of nano-material in 2012. According to EU definition, nanomaterial means a natural, incidental or manufactured material containing particles, in an unbound sta...

Journal: :Bio-medical materials and engineering 2015
N H Sulaiman M J Ghazali B Y Majlis J Yunas M Razali

The calcium ferrite nano-particles (CaFe2O4 NPs) were synthesized using a sol-gel method for targeted drug delivery application. The proposed nano-particles were initially prepared by mixing calcium and iron nitrates that were added with citric acid in order to prevent agglomeration and subsequently calcined at a temperature of 550°C to obtain small particle size. The prepared nanoparticles wer...

2004
Sheikh A. Akbar

Introduction and Background: Ceramics are inorganic, nonmetallic materials, such as alumina, beryllia, or glassceramic, whose final characteristics are produced by subjection to high temperatures. Nanomaterials is a rapidly growing area of ceramics [1-3] and can be classified into the following categories: Nano-particles submicron or ultra micron size particles; Nano-fibers – nanometer (nm) siz...

Journal: :international journal of nano dimension 0
a. elsagh faculty of chemistry, department of chemistry, north tehran branch, islamic azad university, iran. m. tahernejad nuclear science and technology research institute, atomic energy organization of iran.

in recent years, using sol-gel procedure for the purpose of laboratory and industrial synthesis of nano-structures, and especially silica nano-particles, has been significantly increased. in this research, silica particles were synthesized by sol-gel procedure and their physical and chemical properties were studied by means of scanning electron microscopy (sem), transmission electron microscopy...

2016
James J Faust Kyle Doudrick Yu Yang David G Capco Paul Westerhoff

Recent studies indicate the presence of nano-scale titanium dioxide (TiO2) as an additive in human foodstuffs, but a practical protocol to isolate and separate nano-fractions from soluble foodstuffs as a source of material remains elusive. As such, we developed a method for separating the nano and submicron fractions found in commercial-grade TiO2 (E171) and E171 extracted from soluble foodstuf...

Journal: :Journal of virology 2015
Anna D Koromyslova Grant S Hansman

UNLABELLED Human noroviruses are icosahedral single-stranded RNA viruses. The capsid protein is divided into shell (S) and protruding (P) domains, which are connected by a flexible hinge region. There are numerous genetically and antigenically distinct noroviruses, and the dominant strains evolve every other year. Vaccine and antiviral development is hampered by the difficulties in growing huma...

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