Aims: Ethyl glucuronide (EtG) and ethyl sulfate (EtS) are conjugated ethanol metabolites formed in low amounts after alcohol consumption. Compared with ethanol, EtG and EtS are excreted in urine for a prolonged time, making them useful as sensitive alcohol biomarkers. This study determined the detection times for EtG and EtS in alcoholic patients undergoing alcohol detoxification. Methods: Alco...

Abstract The period of the COVID-19 pandemic has forced all activities in educational institutions to maintain distance and material delivery through unusual media methods. To get around this unfavourable situation, online methods are one most effective options overcome it. This research aims analyse expected virtual class model on science learning based student’s perspective. is a case study c...

A simple, rapid and efficient dispersive liquid–liquid microextraction by use of ionic liquid (IL-DLLME)method, followed by flame atomic absorption spectrometry (FAAS) was developed for the preconcentrationand determination of palladium in water samples. In this method, an appropriate mixture of acetone and octylmethyl imidazolium hexafluorophosphate was injected rapidly into the aqueous sample...

Abstract Polycyclic aromatic hydrocarbons (PAHs) are classified as persistent and carcinogenic organic pollutants. PAHs contamination has been reported in water. Many of relevant regulatory bodies such as EU and EPA have regulated the limit levels for PAHs in drinking water. In this study, 13 priority polycyclic aromatic hydrocarbons (PAHs) were determined in tap water samples of Tehran and wat...

This paper describes the process of the conception of a software tool of TELE management. The proposed management tool combines information from two sources: i) the automatic reports produced by the Learning Content Management System (LCMS) Blackboard and ii) the views of students and teachers on the use of the LCMS in the process of teaching and learning. The results show that the architecture...

Stevia rebaudiana cultivated in non-native tropical conditions tends to flower early, halting vegetative growth, resulting lower biomass and yields of its valued steviol glycoside metabolites. While indoor cultivation allows manipulation artificial lighting mimic optimal conditions, it introduces an additional energy cost. The study objectives were assess photoperiod as a strategy increase over...

Background: Ethnobotanical survey in the rural villages Nepal revealed that fruits of Rhus chinensis Mill. have been using for treatment diarrhea and dysentery. Objective: To evaluate antimicrobial antioxidant effects, identification chemical constituents R. chinensis. Materials Methods: Phytochemical screening was performed on hexane 70% methanolic extracts sample followed by gas chromatograph...

Abstract Polycyclic aromatic hydrocarbons (PAHs) are classified as persistent and carcinogenic organic pollutants. PAHs contamination has been reported in water. Many of relevant regulatory bodies such as EU and EPA have regulated the limit levels for PAHs in drinking water. In this study, 13 priority polycyclic aromatic hydrocarbons (PAHs) were determined in tap water samples of Tehran and wat...