background heat, chemical and organic pollution are three types of environmental pollution, caused by refinery and petrochemical industries. problems caused by hear and chemical pollutants are currently resolved to some extent but organic pollution such as poly aromatic hydrocarbons (pahs) are still considered as important problems of industry and environment. objectives a laboratory study was ...

Dental caries is the most common chronic disease which involve the civilized humankind and is designated as the “disease of the civilization”. Oral Streptococci such as S. sanguis, S. salivarius and S. mutans have a very important role to play in the process of plaque formation. In order to inhibit and control caries process, the growth of such Streptococci must be reined. The purpose of this s...

Objective: The growing resistance of different bacteria to antibiotic chemical drugs have become the global issue. This investigation is the first study of the antimicrobial activity of the essential oil of flowering aerial parts of Vaccinium arctostaphylos. The current research was conducted to evaluate the antibacterial effects of essential oils and hydroalcoholic extract  extracted ...

Objective(s): Several beneficial effects have been attributed to the probiotic lactic acid bacteria. It was determined that lactobacilli can exert antiproliferative effects on the various cancer cell lines including colon cancer. Effects of lactic acid bacteria on colon cancer may vary from strain to strain and there is a need to find the new probiotic strains with tumor suppressing properties ...

Background & Aim: Very studies results show that many plants can be used safety and successfully to treat bacterial diseases without presenting the disadvantages affects and antibiotic resistance. Eucalyptus globulus and Malva neglecta are native plants in Iran that due to containing different chemical compounds have been antimicrobial activity against some bacteria. The aim o...

Objective: The growing resistance of different bacteria to antibiotic chemical drugs have become the global issue. This investigation is the first study of the antimicrobial activity of the essential oil of flowering aerial parts of Vaccinium arctostaphylos. The current research was conducted to evaluate the antibacterial effects of essential oils and hydroalcoholic extract  extracted ...

A new generation of young learners often described as digital native school children are attitudinally and technically equipped to employ social media as a social process in learning. However, few international virtual learning projects have been implemented and researched. This article examines a trial which aimed to combine viable technology with future pedagogic solutions for primary student...

Chemical modification of α-amylase from locale bacteria isolate Bacillus subtilis ITBCCB148 using glyoxylic acid to increase thermal stability of the enzyme has successfully been done. The results showed that the native and the modified enzyme have similar pH of 6.0 and optimum temperature of 60°C. However, the thermal stability of the modified enzymes was increased 1.8-2.1 times compared to th...

This position paper argues in favor of integrating personal response systems (PRSs) also known as audience response systems or clickers into traditional lectures to increase student engagement, participation, and achievement. Traditional lectures have been disregarded as an effective method of teaching and learning (Freisen, 2011). They are inferior in facilitating learning primarily because th...

Recent advances in the field of computational light transport have made it possible to solve previously unsolvable problems thanks to incorporating new devices and techniques. One of these problems is the decomposition of the illumination into its local and global components in real scenes. Previous work has managed to perform such a decomposition by projecting several light patterns on a targe...