نتایج جستجو برای: functional dyes

تعداد نتایج: 601988  

Journal: :Ecotoxicology and environmental safety 2012
Ingrid Bazin Aziza Ibn Hadj Hassine Yosra Haj Hamouda Wissem Mnif Ahgleb Bartegi Miguel Lopez-Ferber Michel De Waard Catherine Gonzalez

The presence of dyes in wastewater effluent of textile industry is well documented. In contrast, the endocrine disrupting effects of these dyes and wastewater effluent have been poorly investigated. Herein, we studied twenty-three commercial dyes, usually used in the textile industry, and extracts of blue jean textile wastewater samples were evaluated for their agonistic and antagonistic estrog...

2013
Shokoufeh Ahmadi Douglas B. Craig Douglas M. Goltz

In this study, the separation parameters in micellar electrokinetic chromatography (MEKC)-laser-induced fluorescence (LIF) were optimized for the separation of red and yellow historical dyes in 20 mM borate buffer with 20 mM sodium dodecyl sulfate (SDS). Separation conditions were optimized by changing pH, organic modifier (methanol and acetonitrile) concentrations and applied voltage. The mixt...

Journal: :Immunology and cell biology 1999
C R Parish

Fluorescent dyes are increasingly being exploited to track lymphocyte migration and proliferation. The present paper reviews the properties and performance of some 14 different fluorescent dyes that have been used during the last 20 years to monitor lymphocyte migration. Of the 14 dyes discussed, two stand out as being the most versatile in terms of long-term tracking of lymphocytes and their a...

Journal: :iranian journal of health sciences 0
soheil sobhanardakani department of the environment, school of basic sciences, hamedan branch, islamic azad university, hamedan, iran raziyeh zandipak young researchers & elite club, hamedan branch, islamic azad university, hamedan, iran

background and purpose:the presence of dyes in wastewaters may cause serious problems for the environment because of their high toxicity to aquatic organisms and unfavorable aesthetical impact. in the present study, multi-walled carbon nanotubes (mwcnts) were used for removal of anionic dyes direct blue 106 (db106) and acid green 25 (ag25), from water samples. materials and methods:mwcnts were ...

Journal: :مجله بهداشت محیط و توسعه پایدار 0
abdolmajid gholizadeh mitra gholami asghar ebrahimi mohammad miri ali nikoonahad

introduction: the powdered activated carbon treatment (pact) has been proposed as an alternative in wastewater treatment and wastewater biomass protection against toxic substances. this study aims to evaluate pact performance in treating dyes, acid orange, and remazol brilliant reactive blue. methods: this empirical- applied research was carried out in pilot scale in which different dye removal...

کاویانی, سپیده , حسنی نژاد درزی, سید کریم, دیانتی تیلکی, رمضانعلی, یزدانی, جمشید,

Background and purpose: Adsorption processes are widely used in removing pollutants from waste waters, particularly those that are not easily biodegradable such as dyes. In this study natural zeolite, which is easily found in many places, was used as a low-cost adsorbent for removal of dye from effluents. Materials and methods: Adsorption of Azo dyes including two basic and one reactive (React...

Journal: :Small 2009
Santimukul Santra Charalambos Kaittanis Jan Grimm J Manuel Perez

A biocompatible, multimodal, and theranostic functional iron oxide nanoparticle is synthesized using a novel water-based method and exerts excellent properties for targeted cancer therapy, and optical and magnetic resonance imaging. For the first time, a facile, modified solvent diffusion method is used for the co-encapsulation of both an anticancer drug and near-infrared dyes. The resulting fo...

Journal: :Journal of the American Chemical Society 2010
Hee-Sun Han Neal K Devaraj Jungmin Lee Scott A Hilderbrand Ralph Weissleder Moungi G Bawendi

We present a bioorthogonal and modular conjugation method for efficient coupling of organic dyes and biomolecules to quantum dots (QDs) using a norbornene-tetrazine cycloaddition. The use of noncoordinating functional groups combined with the rapid rate of the cycloaddition leads to highly efficient conjugation. We have applied this method to the in situ targeting of norbornene-coated QDs to li...

2013

Near-infrared (near-IR, NIR) dyes offer important advantages over traditional visible light dyes. Because cellular or tissue components produce minimal autofluorescence in the near-IR region, near-IR dyes have the potential to offer highly specific and sensitive detection in complex biological systems. Also, because light with wavelength in the near-IR region has strong tissue penetration, near...

2014
Mahmoud E. M. Sakr Maram T. H. Abou Kana Gamal Abdel Fattah

Complexation of metallic silver nano particles (NPs) with Pyrromethene laser dyes (PM567, PM597) has significant effect on lifetime, photostability and the fluorescence efficiency. These enhancement of optical properties of the complex in solution due to surface Plasmon resonance (SPR) have been promised higher efficiencies in case of [40% Ag NPs: PM dye] complexes for dye laser systems. The fl...

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