The remarkable characteristics of graphene make it a model candidate for boosting the effectiveness nano-adsorbents with high potential owing to its large surface area, π-π interaction, and accessible functional groups that interact an adsorbate. However, stacking reduces influence adsorption also practical application. On other hand, widespread use aromatic compounds in industry has aggravated contamination water environment, how effectively remove them become research hotspot. Herein, we...

Abstract Quantum dots (QDs) with photostability show a potential application in optical sensing and biological imaging. In this work, ternary nanocomposite (NC) of high fluorescent polyaniline (PANI)/2-acrylamido-2-methylpropanesulfonic acid (AMPSA) capped silver nanoparticles (NPs)/graphene oxide quantum (PANI/Ag (AMPSA)/GO QDs) have been synthesized by situ chemical oxidative polymerization aniline the presence Ag NPs GO QDs. QDs were prepared AgNO3 reduction glucose carbonization methods,...

Selective determination of toxic hexavalent chromium (Cr(VI)) is a stringent important due to its huge negative impact on the health and environment. Recently, high sensitivity, rapidness, cost-effectiveness fluorescent sensors for Cr(VI) have been developed. A nanocomposite (NC) has synthesized based doped polyaniline (PANI), 2-acrylamido-2-methylpropanesulfonic acid (AMPSA) capped Ag nanoparticles (NPs) graphene oxide (GO) quantum dots (QDs) via in situ reaction highly selective sensing...

Nanotoxicology is argued and considered one of the emerging topics. In this study, polyaniline (PANI)/2-acrylamido-2-methylpropanesulfonic acid (AMPSA) capped silver nanoparticles (NPs)/graphene oxide (GO) quantum dots (QDs) nanocomposite (PANI/Ag (AMPSA)/GO QDs NC) as a nanoadsorbent has potential for removal toxic hexavalent chromium (Cr(VI)) ions from water. The acute toxicity NC was evaluated on Artemia salina freshwater Ostracods (Cypridopsis vidua) larvae 48 h. measurements were made...

Cellulose and Nanocellulose acetate (NCA) have attractive novel properties like excellent mechanical properties, rich hydroxyl groups for modification, natural with environmental friendliness. was extracted from rice straw wastes as an extra value, then it had been further transformed into NCA using the acidic hydrolysis technique. The structural, crystalline, morphological, were characterized by Fourier transform infrared spectroscopy (FTIR), Proton nuclear magnetic resonance (1HNMR), X-ray...

Abstract This study aimed to characterize the water quality of 4 sites in Lake Idku, third largest wetland region Egypt regarding physicochemical indicators, spatial distributions certain trace elements and organochlorine compounds (OCs). Most tested indicators were above permissible limits River Nile except nitrate was lower than limits. The distribution concentrations Fe, Cu, Zn, Mn, Pb, Cd significantly differed (p > 0.05) among sampling sites, where mean these all ranged from...

The aim of this study is to develop a ternary nanocomposite (NC) polyaniline (PANI)/2-acrylamido-2-methylpropanesulfonic acid (AMPSA)-capped silver nanoparticles (NPs)/graphene oxide quantum dots (PANI/Ag (AMPSA)/GO QDs) as an efficient adsorbent for the removal highly toxic hexavalent chromium (Cr(vi)) from polluted water. PANI/Ag QDs NC was synthesized via in situ oxidative polymerization. effects pH, dose, initial concentration, temperature, contact time, ionic strength and co-existing...

The uptake of low concentration toxic cadmium ions from polluted water by polyaniline/akaganéite superparamagnetic nanocomposite was investigated.Akaganéite nanoparticles (NPs) and polyaniline (PANI) doped with hydrochloric acid were synthesized co-precipitation chemical polymerization methods, respectively.Polyaniline/akaganéite formed using facile method.High resolution transmission microscope image PANI/akaganéite revealed that it is composed sheets spherical shaped PANI as a matrix...

The adsorption behavior of some metal ions (Pb, Mn, Mg, Zn and Ca) was studied on silicon dioxide nanoparticles, SiO2 NP, alone its mixture with microcrystalline cellulose, MCC, powder (1:1) as drug carriers in pharmaceutical preparations. effect different conditions temperature pH investigated. It found that upon increasing the temperature, ability adsorbent material increases. solution has same till 8. However, above 8 began to lose efficiency. Although, use NP MCC can improve excipient...

Two water treatment plants (Edfina and Kom-Hamada) in El-Beheira Governorate were selected to monitor disinfection by-products (DBPs) concentrations. A 12-month monitoring program from October 2011 September 2012 was established for measuring some DBPs quality parameters such as temperature, pH, turbidity, total organic carbon (TOC), ammonia bromide. The concentrations of determined by gas chromatography with ECD (GC-ECD). Trihalomethanes (THMs) chloral hydrate (CH) commonly seen all samples...

Adsorption of the naturally occurring pyrimidine nucleobases and their corresponding nucleosides nucleotides on compost-derived humic acid (HA) has been studied in aqueous solution. All these nine solutes interact with HA. isotherms were measured at 19 solute concentrations from 12−600 μM 6 temperatures range 10.0−40.0 °C. Analysis Langmuir model indicates that adsorption occurs three detectable steps A, B, C, depending experimental conditions. Most data fit model, which generates a site...

Paramedics convey a high proportion of seizure patients with no clinical need to emergency departments (EDs). In landmark study, only 27% UK paramedics reported being "Very…"/ "Extremely confident" making conveyance decisions. Improved pre-registration education on seizures for is proposed. Clarity needed its potential given recent changes how train (namely, degree, rather than brief vocational course). This study sought describe student paramedics' perceived readiness manage and educational...

Background Many people use bottled water instead of tap for many reasons such as taste, ease carrying, and thinking that it is safer than water. Irrespective the reason, consumption has been steadily growing in world past 30 years. In Egypt, this still increasing to reach 3.8 l/person/day, despite its high price compared with Objective The purpose study was evaluate physicochemical quality some brands compare reported on manufacture's labeling, Egyptian, International standards. Materials...

Chemometric treatment was proposed for handling graphite furnace atomic absorption (GFAAS) data.

Background: Health care waste management is a major challenge in developing countries.Inadequate of healthcare serious concern many countries due to the risks posed human health and environment.The aim study was describe medical situation ambulatory clinics affiliated Alexandria governorate's hospitals.Design:Descriptive cross section design used.Convenient sample used select providers collector workers by proportion allocation technique.All at hospitalsthese were 333 (emergency outpatient...

Aqueous nucleic acid constituent solutes cytosine (1), cytidine (2), 5‘-monophosphate (3), thymine (4), thymidine (5), (6), uracil (7), uridine (8), (9), adenine (10), adenosine (11), (12), guanosine (13), and (14) adsorb on compost-derived humic in sequential steps A, B, C. Langmuir analysis of the isotherms gives a site capacity vi equilibrium constant Ki for given solute adsorption step i that increases vA < vB vC decreases KA > KB KC at 25.0 °C. Data six temperatures range 10.0−40.0 °C...

Oil-water separation is a difficult process, and many reported materials have the drawbacks of low oil absorption which limit their application. Herein, we nylon 6 nanofibers prepared by electrospinning process using formic acid. The nanofibers' surface morphology, crystallinity, hydrophobicity, sorption capacity were studied. Morphological analysis 30 wt % /formic acid demonstrated uniform that are free from beads with an average diameter varying to 90 nm. results revealed contact angle...

Abstract Disclosure: A. Abdelhameed: None. H. Ibrahim: M. Mortagy: Introduction: Medullary thyroid cancer (MTC) arises from parafollicular cells of the thyroid. 43% patients with MTC have metastasis. It was shown that overall 5-year survival is 40.4%. The clinical course highly variable. Aim to identify factors affecting metastatic sub-population. Understanding these important in treating patients. Methods 340 patients: who were diagnosed 1975 2020 extracted SEER after removing duplicates...

This paper describes adsorption of the aqueous purines adenine (10), adenosine (11), 5'-monophosphate (12), guanosine (13), and (14) on compost-derived humic acid (HA) over solute concentration (12−1200 μM) temperature (10.0−40.0 °C) ranges used with pyrimidine solutes in Part 1. Nucleobase 10 nucleosides 11 13 are neutral under experimental conditions, while nucleotides 12 14 monoanions. All interact HA, but only causes HA dissolution at pH 5−6 temperatures above 25.0 °C, as found cytosine...

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at glance that was extracted from about 100 leading journals. To access of an article which published elsewhere, please select “Full Text” option. The original trackable via the “References”

Chlorinated water samples were used to determine the effect of handling modes on disinfection byproducts (DBPs). The DBPs studied trihalomethanes (THMs), haloacetonitriles (HANs), chloral hydrate (CH), chloropicrin (CP) and 1,1,1-trichloropropanone (TCP). Tap collected from distribution system in Damanhour City (Egypt). investigated strategies included storing covered uncovered bottles a refrigerator up 9 hours, with without previous short boiling. Water quality parameters not affected by...