نتایج جستجو برای: dynamic light scattering interaction

تعداد نتایج: 1386329  

2011
Vinay Jain

Ionizing radiations are known to challenge the integrity of the genome, by inducing several lesions like double strand breaks, single strand breaks and oxidative base damages in the DNA. Eukaryotic DNA is packaged inside the nucleus in the form of chromatin, which is formed by the interaction of histone proteins with DNA. Higher order chromatin structure acts as a barrier to the detection and r...

2005
Tom Savels Allard P. Mosk

In the description of the interaction of atomic ensembles with light, the atoms are often treated in the electric dipole approximation, and are therefore effectively considered to be point dipoles. The advantages of the point-dipole formalism are twofold. First, the d-function potential associated with point scatterers allows for significant mathematical simplifications compared to finite-size ...

Background and Objectives: Actinobacteria efficiently can produce different nanoparticles with different biological properties due to their ability to produce secondary metabolites. The aim of present study, isolation and screening of gold nanoparticles via producing actinobacteria from the soil were studied and their antibacterial activities was evaluate. Methods: In this study, after iso...

Journal: :Journal of biomedical optics 2012
Youngchan Kim John M Higgins Ramachandra R Dasari Subra Suresh YongKeun Park

We present the anisotropic light scattering of individual red blood cells (RBCs) from a patient with sickle cell disease (SCD). To measure light scattering spectra along two independent axes of elongated-shaped sickle RBCs with arbitrary orientation, we introduce the anisotropic Fourier transform light scattering (aFTLS) technique and measured both the static and dynamic anisotropic light scatt...

Journal: :physical chemistry research 0
mohhamad mahdi heyhat assistance professor salimeh kimiagar islamic azad university- central tehran branch - tehran - iran narjes ghanbaryan sani gasem abad master student elnaz feyzi master student

graphene oxide was prepared using modified hummers method. stable ethylene-glycol nanofluids containing graphene oxide nanosheets were provided. nd: yag pulsed laser was applied to prepare reduced nanofluids. experimental results revealed that thermal conductivity of the nanofluids is increased with increasing the concentration of graphene oxide (go) in ethylene glycol. the enhancement ratio of...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2013
guangxiu mao anfeng zhu

in this paper, aggregation behaviors of aqueous solutions of short chain hydrophilic ionic liquids (ils), 1 – allyl - 3 - methylimidazolium chloride ([amim]cl), 1 - ethyl - 3 - methylimidazolium chloride ([emim]cl), 1 - butyl - 3 - methylimidazolium chloride ([bmim]cl), 1 - butyl - 3 - methylimidazolium tetrafluoroborate ([bmim]bf4) were investigated using conductivity and laser light scatterin...

Journal: :iranian journal of pharmaceutical sciences 0
zahra ramezani nanotechnology research center, faculty of pharmacy, jundishapur university of medical sciences, ahvaz, iran department of medicinal chemistry, faculty of pharmacy, jundishapur university of medical sciences, ahvaz, iran najmeh dibaee chemistry department, research and science center of azad university, ahvaz branch, ahvaz, iran

resonance light scattering (rls) intensity of silver nanoparticles in the presence of sodium dodecylsulphate was quenched on addition of sulfasalzine. the quenching extent was shown to be proportional to the sulfasalazine concentration. effect of different parameters such as ph, volume and kind of buffer, silver nanoparticles concentration, sodium dodecylsulphate (sds) concentration, and waitin...

The development and design of the biocompatible and biodegradable thermodynamically stable micellar and microemulsion transparent dispersions to reduce the free and unbounded drugs concentration in the blood is a basic challenge in field of drug efficacy and bioavailability of drugs. In the current work, solubilization capacity of the drug (Tocopherol), oil (Ethyl Butyrate), and oil+drug (1:1 m...

2017
Johannes Mauer Matti Peltomäki Simón Poblete Gerhard Gompper Dmitry A Fedosov

Light scattering is a well-established experimental technique, which gains more and more popularity in the biological field because it offers the means for non-invasive imaging and detection. However, the interpretation of light-scattering signals remains challenging due to the complexity of most biological systems. Here, we investigate static and dynamic scattering properties of red blood cell...

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