Production and comparison of structural, thermal and physical characteristics of chitin nanoparticles obtained by different methods.

This study examined the impact of acid hydrolysis, tempo oxidation, and mechanical grinding on the physical, thermal, and structural properties of α-chitin nanocrystals and nanofibers. The manufacturing methods could influence the diameter, functional groups, and crystal patterns of the resulting nanoparticles. Analysis of the DLS results revealed that the size of acidic nanocrystals were smaller and showed improved dispersibility.

Photocatalytic degradation of 2,4-dichlorophenoxyacetic acid from aqueous solutions by AgPO/TiO nanoparticles under visible light: kinetic and thermodynamic studies.

Between the countless chemical substances applied in agriculture, 2,4-dichlorophenoxyacetic acid (2,4-D) herbicide is considered as a toxic and carcinogenic pollutant which is difficult to remove from water due to its biological and chemical stability and high solubility. The goal of this study was photocatalytic degradation of 2,4-D, using AgPO/TiO nanoparticles under visible light. The AgPO/TiO nanoparticles were characterized using XRD, FESEM and EDS analysis to investigate its crystal structure and elemental compounds.

A catalyst-free approach to synthesis of spiroacenaphthylene-pyranopyrazole derivatives in water media.

A simple approach for the synthesis of spiroacenaphthylene-pyranopyrazole derivatives was achieved via the reaction between acenaphthoquinone, pyrazolones, and activated methylene compounds (malononitrile derivatives) in water as a green solvent without using any catalyst in order to avoid the use of transition metal. This method has the advantages of mild reaction condition, short reaction time, easy workup, excellent yields, and avoidance of environmentally hazardous solvents.

Comparison of Conventional Cytology, Liquid-Based Cytology, and Cell Block in the Evaluation of Peritoneal Fluid in Gynecology Malignancies.

Background: Peritoneal washing cytology has become an accepted method in evaluating gynecology malignancies.

Objective: The aim of this work was to compare the conventional cytology, liquid-based cytology (LBC), and cell block in the evaluation of peritoneal fluid.

Materials And Methods: A total of 48 cases with ovarian and uterine malignancy were included in this study.

The risk of cardiovascular events based on the Framingham criteria in Adults Living in Mashhad (Iran).

Background And Aim: Cardiovascular diseases are a problem in low- and middle-income countries, such as Iran. The present research was performed to identify risk factors contributing to cardiovascular diseases and their distributions among the adult population of Mashhad (Iran) using the Framingham criteria.

Methods: This cross-sectional population-based study performed in 2015 on 2,976 adults living in Mashhad (Iran) using Stratified cluster-random sampling method.

Recent Developments in Acenaphthoquinone-Based Multicomponent Reactions: Synthesis of Spiroacenaphthylene Compounds.

This review characterizes the multicomponent reactions of acenaphthoquinone as building blocks for the synthesis of a variety of heterocyclic compounds with medicinal chemistry interest. There is a wide range of reactions that include acenaphthoquinone in the synthesis of heterocyclic compounds. Also this review gives an overview spirocyclic compounds has important applications in pharmacological during the period from 2000 to 2017.

Antioxidant activity and total phenolic compounds of Dezful sesame cake extracts obtained by classical and ultrasound-assisted extraction methods.

Sesame cake is a by-product of sesame oil industry. In this study, the effect of extraction methods (maceration and sonication) and solvents (ethanol, methanol, ethanol/water (50:50), methanol/water (50:50), and water) on the antioxidant properties of sesame cake extracts are evaluated to determine the most suitable extraction method for optimal use of this product. Total phenolic content is measured according to the Folin-Ciocalteu method and antioxidant activities of each extract are evaluated with the 2,2-diphenyl-1-picrylhydrazyl (DPPH), β-carotene bleaching, and ferric reducing/antioxidant power (FRAP) methods.