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4 results on '"Shirin Sheikholeslami"'

1. A Study of Characters’ Facial Expressions of Emotions: The Case of Iranian Audio Described Films

Author

Shirin Sheikholeslami and Samar Ehteshami

Subjects
audio description, facial expressions, iranian audio described films, the blind and visually impaired, Language and Literature
Abstract

Audio description is one of the sub-branches of audiovisual translation, which has achieved significant growth in recent years. The current study examined the description of characters’ facial expressions of emotion in Persian audio described films. Facial expressions of emotions were initially analyzed based on Ekman and Friesen’s (2003) model. Next, we designed a questionnaire based on the proposed model and asked 50 participants to answer the questions. It was found that 60.18% of the emotions were lost in translation. The most frequently described emotions were sadness, surprise, anger, happiness and fear, in that order. The results of the first and second phases were consistent since the participants mentioned that the description of emotions were insufficient.

Published
2023
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2. Comparison of the Antimicrobial Effects of Silver Nanoparticles Alone and In Combination with Zataria Multiflora Extract On Some Gram-Positive and Gram-Negative Bacteria

Author

Shirin Sheikholeslami, Seyed Mahdi Rezayat, Reza Hosseini Doust, and Hamid Reza Ahmadi Ashtiani

Subjects
silver nanoparticles, zataria multiflora, antibacterial effect, gram-positive bacteria, gram-negative bacteria., Medicine
Abstract

Abstract Background and Objective: The spread of drug resistance in bacteria have prompted researchers to seek suitable alternative for antimicrobial drugs among various medicinal plants and nanoparticles. The aim of this study was to evaluate the effect of silver nanoparticles alone and in combination with methanol extract of Zataria multiflora on five Gram-positive and Gram-negative bacteria. Methods: Different concentrations of the nanoparticles and extract alone or in combination with each other were tested against the bacteria, using well diffusion method. Three concentration levels (lowest, average and highest) were prepared form the nanoparticles and the extract for the combination, and finally nine different combinations were prepared. Results: The extract and nanoparticles showed inhibitory effects against all the tested bacteria. The maximum diameter of growth inhibition zone in the presence of the extract and nanoparticles were observed in Streptococcus pyogenes (35.6mm) and methicillin-resistant Staphylococcus aureus (20.6mm), respectively. The maximum diameter of growth inhibition zone for the combination was measured in S. pyogenes (31mm). Conclusion: The combination of low concentrations of the plant extract and nanoparticles are more effective against bacteria, but the combination of their high concentrations reduce the antibacterial effects in some cases.

Published
2016

3. Comparison of the Antimicrobial Effects of Silver Nanoparticles Alone and In Combination with Zataria Multiflora Extract On Some Gram-Positive and Gram-Negative Bacteria

Author

Hamid Reza Ahmadi Ashtiani, Shirin Sheikholeslami, Reza Hosseini Doust, and Seyed Mahdi Rezayat

Subjects
silver nanoparticles, Gram-negative bacteria, Drug resistance, medicine.disease_cause, Silver nanoparticle, Microbiology, chemistry.chemical_compound, 0404 agricultural biotechnology, antibacterial effect, medicine, Food science, biology, zataria multiflora, 04 agricultural and veterinary sciences, biology.organism_classification, Antimicrobial, 040401 food science, gram-negative bacteria, chemistry, gram-positive bacteria, Staphylococcus aureus, Streptococcus pyogenes, Medicine, Growth inhibition, Bacteria
Abstract

Background and Objective: The spread of drug resistance in bacteria have prompted researchers to seek suitable alternative for antimicrobial drugs among various medicinal plants and nanoparticles. The aim of this study was to evaluate the effect of silver nanoparticles alone and in combination with methanol extract of Zataria multiflora on five Gram-positive and Gram-negative bacteria. Methods: Different concentrations of the nanoparticles and extract alone or in combination with each other were tested against the bacteria, using well diffusion method. Three concentration levels (lowest, average and highest) were prepared form the nanoparticles and the extract for the combination, and finally nine different combinations were prepared. Results: The extract and nanoparticles showed inhibitory effects against all the tested bacteria. The maximum diameter of growth inhibition zone in the presence of the extract and nanoparticles were observed in Streptococcus pyogenes (35.6mm) and methicillin-resistant Staphylococcus aureus (20.6mm), respectively. The maximum diameter of growth inhibition zone for the combination was measured in S. pyogenes (31mm). Conclusion: The combination of low concentrations of the plant extract and nanoparticles are more effective against bacteria, but the combination of their high concentrations reduce the antibacterial effects in some cases.

Published
2016
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4. Antibacterial Activity of Silver Nanoparticles and Their Combination with Zataria multiflora Essential Oil and Methanol Extract

Author

Seyed Reza Hosseini Doust, Shirin Sheikholeslami, Hamid Reza Ahmadi Ashtiani, Seyyedeh Elaheh Mousavi, and Seyed Mahdi Rezayat

Subjects
0301 basic medicine, Microbiology (medical), Silver, 030106 microbiology, 02 engineering and technology, Microbiology, Silver nanoparticle, law.invention, 03 medical and health sciences, chemistry.chemical_compound, law, Staphylococcus epidermidis, Food science, Essential oil, biology, Bacteria, Chemistry, Antibacterial Susceptibility, Plant Extracts, Broth microdilution, 021001 nanoscience & nanotechnology, biology.organism_classification, Antimicrobial, Essential Oil, Infectious Diseases, Nanoparticles, Methanol, 0210 nano-technology, Antibacterial activity, Research Article
Abstract

Background Against a variety of antimicrobial resistant pathogens, the scientists attempted substitution of antimicrobial medicine with various nanoparticles and plant-based antibacterial substances. Objectives The aim of this study was to assess the antibacterial effects of silver nanoparticles solely and in combination with Zataria multiflora essential oil and methanolic extract on some photogenic bacteria. Methods Minimum inhibitory concentrations (MICs) and fractional inhibitory concentrations (FICs) of plant essential oil, methanolic extract, and silver nanoparticles against bacteria were evaluated using the broth microdilution method and check board microtiter assays. Results The results of the experiment showed that the MIC and minimal bacterial concentration (MBC) values of Ag-NPs against all strains were in the range of 15.625 - 500 µg/mL, and values for the essential oil and plant extract were in the range of 1.56 - 100 mg/mL. Conclusions Silver nanoparticles were observed to have additive effects with essential oil against Staphylococcus epidermidis and S. aureus. The obtained results suggest the need for further investigations of the antibacterial effects of the combination of silver nanoparticles with other plant extracts and essential oils.

Published
2016

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