نتایج جستجو برای: mwcnts cooh
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رهاسازی پساب¬های آلوده به فلزات سمی به بوم سازگان های پذیرنده آن امروزه یکی از نگرانی¬های مهم جهانی محسوب می¬گردد. روش¬های متعددی برای حذف فلزات سمی از پساب¬های آلوده استفاده می¬گردد که جذب سطحی بر جاذب¬های عامل¬دار شده از معمول¬ترین روش¬ها می¬باشد. در مطالعه حاضر عامل دار کردن نانو لوله های کربنی چند دیواره (mwcnts) در چهار مرحله شامل خالص سازی و اکسید کردن (mwcnts-cooh)، آمین دار کردن (mwcnts...
Polymethyl methacrylate (PMMA) bone cement is being used to fill voids that are created due vertebral compression fractures. It also a grouting medium in orthopedic joint replacement surgeries as they possess fast primary fixation the bone. Considering properties and vitro bioactivity of essential for cemented hip knee surgeries. In this study, commercial Simplex P (SPBC) modified with carboxyl...
The natural occurrence of optically active isocitric acid was first demonstrated by Nelson' and Bruce(2) in blackberry fruits, and a somewhat large accumulation of the acid was found by Pucher et al. 3~ in Bryophyllum leaf tissue. This acid has also been recognized as a member of the tri-carboxylic acid cycle in many animals, plants and microorganisms. All isocitric acid, found before in nature...
The MWCNTs-COOH Paste Electrode (MCPE) was successfully used to study the electrochemical behavior of temozolomide in 0.2 M H2SO4 solution, phosphate buffer solution (0.1M PBS, pH 7.4) and 0.1M NaOH solution by Cyclic Voltammetry (CV) technique. The results exhibit that MCPE can remarkably enhance sensing and electrocatalytic activity towards the oxidation and reductio...
In this paper, we propose a simple procedure to obtain multi-walled carbon nanotubes (MWCNTs) decorated with TiO2–Ag nanoparticles (MWCNT–TiO2–Ag). The MWCNTs were via combined functionalization –OH and –COOH groups polymer-wrapping technique using poly(allylamine)hydrochloride (PAH). TiO2-modified Ag synthesized the Pechini method mixture of acetylacetonate-modified titanium (IV) isopropoxide ...
Introduction: The therapeutic potential of anandamide (AEA) for the neurological disorders may be negatively affected by its short half-life or poor solubility. The superior properties of carbon nanotubes (CNTs) for controlled drug delivery, prompted us to design AEA-CNTs complex and assess its effect in in vitro model of ischemic stroke. Methods: In this experimental study, a multi-walled CNTs...
Increasing application of engineered nanomaterials within occupational, environmental, and consumer settings has raised the levels of public concern regarding possible adverse effects on human health. We applied a tiered testing strategy including (i) a first in vitro stage to investigate general toxicity endpoints, followed by (ii) a focused in vivo experiment. Cytotoxicity of laboratory-made ...
We have developed a simple fabrication method of a highly sensitive direct electron transfer-type electrochemical biosensor for hydrogen peroxide by use of cup-stacked carbon nanotubes (CSCNTs). The CSCNTs, formed by stacking of cup-shaped carbon units, has larger internal space and more hydrophilic edges, thanks to the presence of functional groups containing oxygen (e.g., -COOH, -OH), than mu...
The numerous increasing use of carbon nanotubes (CNTs) derived from nanotechnology has raised concerns about their biosafety and potential toxicity. CNTs cause immunologic dysfunction and limit the application of CNTs in biomedicine. The immunological responses induced by pristine multi-walled carbon nanotubes (p-MWCNTs) and PEGylated multi-walled carbon nanotubes (MWCNTs-PEG) on BALB/c mice vi...
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