Coupling of digital image processing and three-way calibration to assist a paper-based sensor for determination of nitrite in food samples.

In this work, a novel and very interesting analytical methodology based on coupling of digital image processing and three-way calibration has been developed for determination of nitrite in food samples. Nitrite in contact with Griess reagent is able to produce a red-colored azo dye whose color intensity is correlated with nitrite concentration and here, a piece of Whatman filter paper impregnated with Griess reagent was used as the platform of the sensor and a SONY Xperia Z5 cell phone was used for image capturing from the sensor surface. To generate second-order data, the -number of the camera's sensor was changed as an instrumental parameter.

Efficient extraction of aromatic amines in the air by the needle trap device packed with the zirconium based metal-organic framework sorbent.

In this study, development of a needle trap device (NTD) packed with UiO-66 adsorbent was used for the sampling of the aromatic amine compounds (including aniline, ,-dimethylaniline and -toluidine) followed by gas chromatography (GC) with flame-ionization detector (FID) analysis. The UiO-66 sorbent was synthesized and then packed inside a spinal needle (Gauge 22). The synthesized sorbent was characterized with the XRD, FE-SEM, EDS and FT-IR techniques.

The catalytic ozonation of diazinon using nano-MgO@CNT@Gr as a new heterogenous catalyst: the optimization of effective factors by response surface methodology.

In this research, the degradation of the insecticide diazinon was studied using a new hybrid catalyst consisting of magnesium oxide nanoparticles (nano-MgO), carbon nanotubes (CNTs), and graphite (Gr), nano-MgO@CNT@Gr, under various experimental conditions. This study shows the optimization of the nano-MgO@CNT@Gr/O process for diazinon degradation in aqueous solutions. Box-Behnken experimental design (BBD) and response surface methodology (RSM) were used to assess and optimize the solo effects and interactions of four variables, pH, catalyst loading, reaction time, and initial diazinon concentration, during the nano-MgO@CNT@Gr/O process.

A National Iranian Cochlear Implant Registry (ICIR): cochlear implanted recipient observational study.

Background And Objective: Patients who receive cochlear implants (CIs) constitutes a significant population in Iran. This population needs regular monitor on long-term outcomes, educational placement and quality of life. Currently, there is no national or regional registry on the long term outcomes of CI users in Iran.

Effect of storage, washing, and cooking on the stability of five pesticides in edible fungi of : A degradation kinetic study.

Pesticide residue in food products is one of the most important global health challenges. The current study sought to investigate the changes in pesticides residue levels in under different storage conditions and during washing and cooking. Pesticides analysis was performed using gas chromatography/mass spectrometry (GC-MS).

Effect of various additives on the properties of the films and coatings derived from hydroxypropyl methylcellulose-A review.

Edible films and coating materials are commonly used as appropriate packaging materials to extend the shelf life of fresh food. Due to all their properties, edible film and coating materials have been received much attention. They are biodegradable, edible, and good barrier against environmental parameters; thereby, they could carry and deliver food additives protecting food quality.

The influence of yeast level and fermentation temperature on Ochratoxin A decrement during bread making.

Ochratoxin A (OTA) occurrence in cereals is a permanent challenge in human health. In recent years, some studies have focused on the role of yeasts as adsorbing tools to eliminate OTA. The aim of the current research was to study the effects of different variables including amount and the fermentation temperature on the reduction of OTA during bread baking.

Ultrasound-assisted sorption of Pb(ii) on multi-walled carbon nanotube in presence of natural organic matter: an insight into main and interaction effects using modelling approaches of RSM and BRT.

In real-scale applications, where NPs are injected into the aqueous environment for remediation, they may interact with natural organic matter (NOM). This interaction can alter nanoparticles' (NPs) physicochemical properties, sorption behavior, and even ecological effects. This study aimed to investigate sorption of Pb(ii) onto multi-walled carbon nanotube (MWCNT) in presence of NOM.

Texture and sensory characterization of functional yogurt supplemented with flaxseed during cold storage.

In this study, flaxseed was used as a functional ingredient in yogurt formulations. The goal of this study was to produce prebiotic yogurt supplemented with flaxseed and investigation of its texture and sensory properties. Yogurt samples containing 0%-4% flaxseed was produced and stored at refrigerator (4-5°C) for 28 days.

Parameter optimization and degradation mechanism for electrocatalytic degradation of 2,4-diclorophenoxyacetic acid (2,4-D) herbicide by lead dioxide electrodes.

2,4-Dichlorophenoxyacetic acid (2,4-D) is one of the most commonly used herbicides in the world. In this work, the electro-catalytic degradation of 2,4-D herbicide from aqueous solutions was evaluated using three anode electrodes, , lead dioxide coated on stainless steel 316 (SS316/β-PbO), lead dioxide coated on a lead bed (Pb/β-PbO), and lead dioxide coated on graphite (G/β-PbO). The structure and morphology of the prepared electrodes were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX).

Electrodegradation of 2,4-dichlorophenoxyacetic acid herbicide from aqueous solution using three-dimensional electrode reactor with G/β-PbO anode: Taguchi optimization and degradation mechanism determination.

This study aimed to investigate the electro-degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) from aqueous solution using two and three-dimensional electrode (2D and 3D) reactors with graphite(G)/β-PbO anode. To increase the degradation efficiency, affecting parameters on the electro-degradation process were investigated and optimized by adopting the Taguchi design of experiments approach. The structure, morphology and electrochemical properties of the electrodes were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), linear sweep voltammetry and cyclic voltammograms.

Palmitoylethanolamide as adjunctive therapy in major depressive disorder: A double-blind, randomized and placebo-controlled trial.

Background: Experimental studies provide evidence for antidepressant effects of Palmitoylethanolamide (PEA) in animal models of depression. We aimed to evaluate the efficacy and tolerability of PEA add-on therapy in treatment of patients with major depressive disorder (MDD).

Methods: In a randomized double-blind, and placebo-controlled study, 58 patients with MDD (DSM-5) and Hamilton Depression Rating Scale (HAM-D) score ≥ 19 were randomized to receive either 600 mg twice daily Palmitoylethanolamide or placebo in addition to citalopram for six weeks.

Selective removal of lead ions from aqueous solutions using 1,8-dihydroxyanthraquinone (DHAQ) functionalized graphene oxide; isotherm, kinetic and thermodynamic studies.

An anthraquinone - graphene structure was fabricated and applied for the removal of lead(ii) from aqueous solution. The equilibrium occurred in about 10 min revealing the high adsorption rate at the beginning of the process. The maximum Pb(ii) adsorption capacity of the FeO@DHAQ_GO nanocomposite was about 283.

Efficacy of Sodium Hypochlorite Activated With Laser in Intracanal Smear Layer Removal: An SEM Study.

The purpose of the present study was to evaluate the different concentrations of sodium hypochlorite activated with laser in removing of the smear layer in the apical, middle, and coronal segments of root canal walls by scanning electron microscopy analysis. Sixty single-rooted human mandibular teeth were decoronated to a standardized length. The samples were prepared by using Race rotary system to size 40, 0.

Physicochemical and sensory attributes assessment of functional low-fat yogurt produced by incorporation of barley bran and .

The aim of this study was to analyze the effect of different amounts of barley bran (0.3%, 0.6%, 0.

C-reactive protein serum level in patients with psoriasis before and after treatment with narrow-band ultraviolet B.

Background:: C-reactive protein is an inflammatory biomarker and its level increases in the serum of psoriatic patients. Its level is also associated with Psoriasis Area and Severity Index score.

Objective:: The aim of this study was to assess the decrement of serum C-reactive protein level with narrow-band ultraviolet B (NB-UVB) therapy.

Predisposing role of vitamin D receptor (VDR) polymorphisms in the development of multiple sclerosis: A case-control study.

Multiple sclerosis (MS) is a chronic inflammatory, demyelinating, and neurodegenerative disease of the central nervous system (CNS) with a complex etiology. Given the Vitamin D receptor (VDR) gene, it is considered an outstanding risk component associated with MS. The aim of the present study has been to explore and emphasize the role of ApaI, BsmI, TaqI and FokI polymorphisms of VDR gene in susceptibility to MS in an Iranian case-control population including 160 patients and 150 healthy controls.

Study of the Continuous Improvement Trend for Health, Safety and Environmental Indicators, after Establishment of Integrated Management System (IMS) in a Pharmaceutical Industry in Iran.

Background: Nowadays, organizations try to improve their services and consequently adopt management systems and standards which have become key parts in various industries. One of these management systems which have been noticed in the recent years is Integrated Management System that is the combination of quality, health, safety and environment management systems.

Aim: This study was conducted with the aim of evaluating the improvement trend after establishment of integrated management system for health, safety and environment indicators, in a pharmaceutical industry in Iran.

Evaluation of an oral health intervention among mothers of young children: a clustered randomized trial.

Background: Oral health education for the mothers of very young children is important in reducing the risk of early childhood caries. This study aimed to evaluate the impact of an oral health intervention among mothers of 1-2 years old children.

Methods: This cluster randomized controlled trial (2012) was conducted among ninety mothers of 1-2 year old children.

A clinicopathological study of odontogenic cysts and tumors in hamadan, iran.

Statement Of The Problem: Odontogenic cysts and tumors are the most frequent osseous destructive lesions of the jaws; however, there is little information regarding the relative frequency of these lesions among the Iranian population.

Purpose: The purpose of this study was to determine the distribution of clinically and histologically- diagnosed odontogenic cysts and tumors during a period of 13 years in Hamadan, and also its correlation with age, gender, and the site of the lesion.

Materials And Method: A descriptive cross-sectional study was performed on 413 oral and maxillofacial specimens during 1996 to 2008.

Transforming Growth Factor-α Improves Memory Impairment and Neurogenesis Following Ischemia Reperfusion.

Objective: Stroke is most important cause of death and disability in adults. The hippocampal CA1 and sub-ventricular zone neurons are vulnerable to ischemia that can impair memory and learning functions. Although neurogenesis normally occurs in the dentate gyrus (DG) of the hippocampus and sub-ventricular zone (SVZ) following brain damage, this response is unable to compensate for severely damaged areas.

Mesh fixation compared with nonfixation in transabdominal preperitoneal laparoscopic inguinal hernia repair.

This study was conducted to compare laparoscopic inguinal hernia repair with or without mesh fixation regarding recurrence rate and duration of operation time. A sample of 73 patients who underwent laparoscopic transabdominal pre-peritoneal (TAPP) inguinal hernia repair from January 2002 to January 2010 were derived from the medical records of university hospitals including Ekbatan, Beasat, and Shaheed Beheshti, as well as private hospitals. MERSILENE™ Mesh (Johnson & Johnson Medical GmbH, Norderstedt, Germany) fixation was performed for 23 cases and polypropylene mesh without fixation for the rest.