Superwettable recycled polyethylene terephthalate/cobalt zeolitic imidazolate framework membrane for extraction of polycyclic aromatic hydrocarbons from water samples.

A significant challenge in membrane production is the need for affordable materials that provide high efficiency for their designated applications. Employing recycled materials in membrane manufacturing is viewed as a promising solution to tackle this challenge. In this work, a superwettable polyethylene terephthalate membrane modified with cobalt zeolitic imidazolate framework (PET/Co ZIF) is prepared for the first time from recycled plastic mineral water bottles and used to extract polycyclic aromatic hydrocarbons (PAHs) from aqueous samples followed by high-performance liquid chromatography with UV detection (HPLC-UV).

Synthesis of a new magnetic metal organic framework based on nickel for extraction of carvacrol and thymol in thymus and savory samples and analyzed with gas chromatography.

The present research aims at reporting a new sorbent, a magnetic nano scale metal-organic framework (MOF), based on nickel acetate and 6-phenyl-1,3,5-triazine-2,4-diamine. The prepared sorbent was used to extract carvacrol and thymol using an ultrasonic-assisted dispersive micro solid phase extraction (UA-DμSPE) method. The structure of the metal organic framework was studied by applying scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), energy dispersive spectrometry (EDS), and vibrating sample magnetometer (VSM).

Effects of attentional focus and gaze instruction during observational learning of a basketball free-throw.

Observational learning has long been used to instruct individuals on how to perform a novice motor skill. Recently, research has shown a benefit to instructing learners to focus externally when viewing a video model (Asadi, Aiken, Heidari, & Kochackpour, 2021). Research has also highlighted the effectiveness of modeling correct gaze behaviors when learning a cognitive task (Jarodzka, van Gog, Dorr, Scheiter, & Gerjets, 2013).

Comparing virtual reality exergaming with conventional exercise in rehabilitation of people with multiple sclerosis: A systematic review.

This systematic review aimed to present the comparison of the impacts of conventional exercise and virtual reality (VR) exergaming on the physical and cognitive abilities of people with multiple sclerosis (PwMS). The literature search was conducted in the EMBASE, PubMed, Scopus, CINAHL, and Cochrane Library databases. Eligible studies were identified by independent reviewers based on the title, abstract and full-texts.

Vortex-assisted dispersive solid-phase microextraction of ondansetron and domperidone using carbonized cockle shell modified with nitrogen and sulfur-doped carbon dots as a bio-based sorbent.

Herein, for the first time, the wasted cockle shells were modified with nitrogen and sulfur-doped carbon dots after carbonization and used as a suitable bio-based sorbent for the extraction of two important antiemetic drugs named ondansetron and domperidone. The extraction and separation were performed based on vortex-assisted dispersive solid-phase microextraction and high-performance liquid chromatography, respectively. Various techniques such as Fourier-transform infrared, fluorescence, field emission scanning electron microscopy, thermogravimetric analysis, nitrogen adsorption-desorption analysis, X-ray powder diffraction, and energy-dispersive spectroscopy were used to characterize the chemical composition of prepared sorbent.

Validity and reliability of the movement assessment battery second edition test in children with and without motor impairment: A prospective cohort study.

Background: Examining the reliability and validity of the second edition movement assessment battery test (MABC-2) in children with and without motor impairment.

Materials And Methods: In this prospective cohort study the MABC-2 test and developmental coordination disorder questionnaire 2007 (DCDQ'07) were completed by children and their parents. By using 95% confidence intervals, minimal detectable change (MDC95) was calculated, and concurrent validity was investigated.

Effect of twelve weeks pilates training on functional balance of male patients with multiple sclerosis: Randomized controlled trial.

Objective: Pilates training has several well-known benefits for people with Multiple Sclerosis (MS). However, its effect on functional balance is unclear. The present study aimed to evaluate the effect of pilates exercises on the functional balance of male patients with MS.

Determinant physiological factors of simulated BMX race.

Evaluating the physiological demands of BMX cycling on a track provides coaches with the information required to prescribe more effective training programmes. To determine the relative importance of physiological factors during simulated BMX race, 12 male riders (age 19.2 ± 3.

The Effects of Aquatic Versus Kata Techniques Training on Static and Dynamic Balance in Children with Autism Spectrum Disorder.

The present study aimed to compare the effect of a land-based and a swimming-based exercise program on balance abilities in children with autism. Thirty children were voluntarily selected and randomly assigned to karate exercise, aquatic training and control groups. Participants practiced for 10 weeks, 2 sessions of 60 min per week.

Caffeinated Chewing Gum Improves Bicycle Motocross Time-Trial Performance.

This study aimed to identify the acute effects of caffeinated chewing gum (CAF) on bicycle motocross (BMX) time-trial (TT) performance. In a randomized, placebo-controlled, double-blind cross-over design, 14 male BMX riders (age = 20.0 ± 3.

Power Analysis of Field-Based Bicycle Motor Cross (BMX).

Introduction: Power meter is a useful tool for monitoring cyclists' training and race performance. However, limited data are available regarding BMX racing power output. The aim of this study was to characterise the power production of BMX riders and investigate its potential role on race performance.

Removal of from aqueous solutions by a cationic surfactant modified montmorillonite.

Nowadays, antibiotics have been found in the effluents of many pharmaceutical industries and hospitals, sanitary sewage, surface water and groundwater. The purpose of this study was to investigate the possibility of using Hexadecyl Trimethyl Ammonium Bromide modified montmorillonite (HDTMA-Mt) as an inexpensive and suitable adsorbent for the removal of from aqueous solutions. The experiments were conducted in a batch system.

The Effect of Gradual Self-Control of Task Difficulty and Feedback on Learning Golf Putting.

: This study aimed to examine the effect of gradual self-control of task difficulty and feedback on accuracy and movement pattern of the golf putting sport skill. : Sixty students were quasi-randomly assigned to four groups under a varying combination of the two factors of task difficulty control (self-controlled or yoked) and feedback control (self-controlled or yoked). The participants in the two groups (dual-factor gradual self-control and self-controlled task difficulty group) that granted control over task difficulty in the acquisition phase were told they could choose any of the pre-set distances from the target.

Effects of nine weeks L-Carnitine supplementation on exercise performance, anaerobic power, and exercise-induced oxidative stress in resistance-trained males.

Purpose: Studies of L-carnitine in healthy athletic populations have yielded equivocal results. Further scientific-based knowledge is needed to clarify the ability of L-carnitine to improve exercise capacity and expedite the recovery process by reducing oxidative stress. This study aimed to examine the 9-week effects of L-carnitine supplementation on exercise performance, anaerobic capacity, and exercise-induced oxidative stress markers in resistance-trained males.

Fabrication of size controlled nanocomposite based on zirconium alkoxide for enrichment of Gallic acid in biological and herbal tea samples.

In this work, novel water-dispersible size controlled nanocomposite based on zirconium alkoxide as metal organic precursor was fabricated and subsequently applied for rapid, efficient and selective preconcentration of gallic acid in human plasma and herbal tea samples. The resultant nanocomposite (FeO@Zr(OtBu)@Laurate) was characterized by Fourier transform infrared, scanning electron microscope and X-ray spectrometer, while laurate forms aggregates on the surface of the nanocomposite and thereby improves sorption of gallic acid. The effects of some variables on efficiency of gallic acid from real samples were optimized by central composite design; while optimum points were achieved as follows: pH 3.

Multi Directional Repeated Sprint Is a Valid and Reliable Test for Assessment of Junior Handball Players.

The aim of the present study was to examine the validity and reliability of a 10 × (6 × 5 m) multi-directional repeated sprint ability test (RSM) in elite young team handball (TH) players. Participants were members of the Iranian national team ( = 20, age 16.4 ± 0.

Determination of carboxylic acids in non-alcoholic beer samples by an ultrasonic-assisted dispersive micro-solid phase extraction based on Ni/Cu-Al layered double hydroxide nanocomposites followed by gas chromatography.

Magnetically separable layered double hydroxide Ni/CuAl-LDH nanocomposites were synthesized and employed as ultrasonic-assisted dispersive micro-solid phase extraction (UA-D-μSPE) sorbent to extract several carboxylic acids (namely propionic, butyric, pentanoic, hexanoic, heptanoic, octanoic, and decanoic) from non-alcoholic beer samples. Ni/CuAl-LDH sorbent was characterized by Fourier transform-infrared (FTIR) spectroscopy, transmission electron microscopy (TEM), and vibrating sample magnetometry (VSM). Effective variables such as amount of sorbent (mg), pH and ionic strength of sample solution, volume of eluent solvent (μL), vortex, and ultrasonic times (min) were investigated via fractional factorial design (FFD).

Synthesis and application of magnetic deep eutectic solvents: Novel solvents for ultrasound assisted liquid-liquid microextraction of thiophene.

Two novel magnetic deep eutectic solvents (MDESs), comprised of cheap and simple components named [choline chloride/phenol] [FeCl] and [choline chloride/ethylene glycol] [FeCl] were prepared and characterized by CHN elemental analysis, proton nuclear magnetic resonance (H NMR), vibrating sample magnetometery (VSM), Raman, Fourier transform-infrared (FT-IR) and UV-Vis spectrometery. The extraction efficiency of the prepared MDESs has been investigated in ultrasound assisted liquid-liquid microextraction based MDES (UALLME-MDES). Briefly, MDESs were added to n-heptan containing thiophene.

Dispersion of hydrophobic magnetic nanoparticles using ultarsonic-assisted in combination with coacervative microextraction for the simultaneous preconcentration and determination of tricyclic antidepressant drugs in biological fluids.

A two-step sample preparation technique based on dispersive micro solid-phase extraction combined with coacervative microextraction is presented for preconcentration and determination of tricyclic antidepressant drugs in biological samples. An important feature of the method is the application of hydrophobic magnetic nanoparticles, which in combination with coacervative microextraction method enables development of rapid and efficient extraction procedure in order to achievement of a high extraction efficiency. Simultaneous optimization by experimental design lead to improvement of method with low cost which supply useful information about interaction among variables.

Extraction of phenolic compounds from water samples by dispersive micro-solid-phase extraction.

In this article, the use of magnetically separable sorbent polyaniline/silica-coated nickel nanoparticles is evaluated under a dispersive micro-solid-phase extraction approach for the extraction of phenolic compounds from water samples. The sorbent was prepared by in situ chemical polymerization of aniline on the surface of silica-modified nickel nanoparticles and was characterized by Fourier transform infrared spectroscopy, transmission electron microscopy, X-ray powder diffraction, scanning electron microscopy, energy-dispersive X-ray spectrometry, and vibrating sample magnetometry. Effective variables such as amount of sorbent (milligrams), pH and ionic strength of sample solution, volume of eluent solvent (microliters), vortex, and ultrasonic times (minutes) were investigated by fractional factorial design.

A green ultrasonic-assisted liquid-liquid microextraction based on deep eutectic solvent for the HPLC-UV determination of ferulic, caffeic and cinnamic acid from olive, almond, sesame and cinnamon oil.

A simple, inexpensive and sensitive ultrasonic-assisted liquid-liquid microextraction method based on deep eutectic solvent (UALLME-DES) was used for the extraction of three phenolic acids (ferulic, caffeic and cinnamic) from vegetable oils. In a typical experiment, deep eutectic solvent as green extraction solvent was added to n-hexane (as a typical oil medium) containing target analytes. Subsequently, the extraction was accelerated by sonication.

Emulsification liquid-liquid microextraction based on deep eutectic solvent: An extraction method for the determination of benzene, toluene, ethylbenzene and seven polycyclic aromatic hydrocarbons from water samples.

In this study, for the first time, a simple, inexpensive and sensitive method named emulsification liquid-liquid microextraction based on deep eutectic solvent (ELLME-DES) was used for the extraction of benzene, toluene, ethylbenzene (BTE) and seven polycyclic aromatic hydrocarbons (PAHs) from water samples. In a typical experiment, 100μL of DES (as water-miscible extraction solvent) was added to 1.5mL of sample solution containing target analytes.

Magnetic molecularly imprinted polymer for the efficient and selective preconcentration of diazinon before its determination by high-performance liquid chromatography.

A molecularly imprinted polymer was selectively applied for solid-phase extraction and diazinon residues enrichment before high-performance liquid chromatography. Diazinon was thermally copolymerized with Fe3 O4 @polyethyleneglycol nanoparticles, methacrylic acid (functional monomer), 2-hydroxyethyl methacrylate (co-monomer), and ethylene glycol dimethacrylate (cross-linking monomer) in the presence of acetonitrile (porogen) and 2,2-azobisisobutyronitrile (initiator). Then, the imprinted diazinon was reproducibly eluted with methanol/acetic acid (9:1, v/v).

Monodisperse silica nanoparticles coated with gold nanoparticles as a sorbent for the extraction of phenol and dihydroxybenzenes from water samples based on dispersive micro-solid-phase extraction: Response surface methodology.

A selective and sensitive method was developed based on dispersive micro-solid-phase extraction for the extraction of hydroquinone, resorcinol, pyrocatechol and phenol from water samples prior to high-performance liquid chromatography with UV detection. SiO2 , SiO2 @MPTES, and SiO2 @MPTES@Au nanoparticles (MPTES = 3-mercaptopropyltriethoxysilane) were synthesized and characterized by scanning electronic microscopy, thermogravimetric analysis, differential thermogravimetric analysis, and infrared spectroscopy. Variables such as the amount of sorbent (mg), pH and ionic strength of sample the solution, the volume of eluent solvent (μL), vortex and ultrasonic times (min) were investigated by Plackett-Burman design.

Comparison of air-agitated liquid-liquid microextraction and ultrasound-assisted emulsification microextraction for polycyclic aromatic hydrocarbons determination in hookah water.

In this work, two disperser-free microextraction methods, namely, air-agitated liquid-liquid microextraction and ultrasound-assisted emulsification microextraction are compared for the determination of a number of polycyclic aromatic hydrocarbons in aqueous samples, followed by gas chromatography with flame ionization detection. The effects of various experimental parameters upon the extraction efficiencies of both methods are investigated. Under the optimal conditions, the enrichment factors and limits of detection were found to be in the ranges of 327-773 and 0.