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9 results on '"Saeideh-Sadat Mortazavi"'

1. The Effect of Online Teaching on the Prevalence of Musculoskeletal Pain in Female Students during the Covid-19 Pandemic

Author

Leila Ghanbari, Salman khazaei, Saeideh Sadat Mortazavi, Hossein Saremi, and homa naderifar

Subjects
covid-19, musculoskeletal, students, pain, Therapeutics. Pharmacology, RM1-950
Abstract

Background: The Covid-19 pandemic has led to the largest disruption ineducation systems in human history. The use of online teaching increased daily,finally affecting more than 200 million students worldwide. The aim of thepresent study was to compare the prevalence of musculoskeletal pain in femalestudents during the Covid-19 pandemic with the pre-pandemic period.Methods: This cross-sectional study was performed in two stages: beforethe Covid-19 pandemic (October to December 2019) and during theCovid-19 pandemic (January to February 2020). The Nordic MusculoskeletalQuestionnaire (NMQ) was used to determine the musculoskeletal pain points.Data was analyzed using the t-test, McNemar test, and logistic regression inSPSS ver. 22, and a P

Published
2022
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2. revalence of musculoskeletal disorder and association with general health status in boroujen beekeepers 1397

Author

Seyed Sadegh Salehi Sadati, Hojat Allah Haghgoo, Zahra Mortazavi, Sahar Dehdar karsidani, Homa Naderifar, and Saeideh Sadat Mortazavi

Subjects
general health, musculoskeletal disorders, beekeepers, Special situations and conditions, RC952-1245
Abstract

Introduction: Musculoskeletal disorders are among the main occupational and work-related diseases with different impacts on general health status of employees. Present study was performed for assessment of association between general health and musculoskeletal disorders among beekeepers of Boroujen. Methods: In this cross-sectional study, beekeepers were selected by census, in 2017. Nordic musculoskeletal questionnaire and general health questionnaire (GHQ28) were used to collect data. Then, the obtained data were analyzed using SPSS- software. Results: Mean of Ggeneral health score was (51.25±12.92) which was suspected to have disorders, and somatic, depression, social and anxiety indices were 12.4± 3.62, 11.43± 4.08, 14.05± 2.63 and 12.55± 4.15, respectively. Also, the most frequent musculoskeletal symptom, during the past 7 days, during the past 12 months, the deterrence of work in the past year was low back pain and knee pain. Although mean of general health score in beekeepers was poorer than normal. No significant correlations were found between general health and musculoskeletal disorder (p-value>0.05). Age, BMI, work experience were risk factor for musculoskeletal disorder. Conclusion: Findings of our study showed that beekeepers were suspected to have general health disorders and the most frequent musculoskeletal disorder was low back pain and knee pain.

Published
2019

3. Removal of Bioaerosols Using Metal-Organic Frameworks Incorporated into Electrospun Nanofibers

Author

Somayeh Farhang Dehghan, Alireza Abbasi, Tahereh Mousavi, Ensieh Masoorian, Farideh Golbabaei, Farshad Mirzaei, Saeideh-Sadat Mortazavi, and Mohammad Reza Pourmand

Subjects
Materials science, Air stream, Polymers and Plastics, General Chemical Engineering, Indoor bioaerosol, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, law.invention, Chemical engineering, law, Electrospun nanofibers, Nanofiber, Relative humidity, Metal-organic framework, 0210 nano-technology, Filtration
Abstract

The aim of the present study is to fabricate neat nanofibers and hybrid ones containing metal-organic frameworks (MOF) and assess and compare their performance to remove of bioaerosols from air stream. Moreover, the antibacterial properties of neat and hybrid nanofibers have been investigated. According to the findings, both neat and hybrid media had better mean microorganism collection efficiency at face velocity of 0.1 m/s compared to 0.3 m/s (p>0.05). The studied media were better able to remove Staphylococcus aureus than Escherichia (p>0.05). Increased temperature had no significant effect on the filtration efficiency (p>0.05). Increased relative humidity lead to significant reduction in the removal efficiency of Escherichia for hybrid media (p

Published
2021
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5. Ship‐in‐bottle preparation of multi‐SO 3 H functionalized ionic liquid@MIL‐100(Fe) for acid‐catalyzed ring‐opening of epoxides

Author

Saeideh-Sadat Mortazavi, Alireza Abbasi, and Majid Masteri-Farahani

Subjects
business.product_category, General Chemistry, Ring (chemistry), Heterogeneous catalysis, Inorganic Chemistry, chemistry.chemical_compound, chemistry, Acid catalyzed, Ionic liquid, Polymer chemistry, Bottle, Metal-organic framework, business, Brønsted–Lowry acid–base theory
Published
2021
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7. A new 2D cadmium coordination polymer based on hydroxyl‐substituted benzenedicarboxylic acid as an effective heterogeneous catalyst for Knoevenagel condensation

Author

Saeideh-Sadat Mortazavi, Alireza Abbasi, Farzaneh Sefidabi, and Majid Masteri-Farahani

Subjects
Inorganic Chemistry, chemistry.chemical_compound, Cadmium, chemistry, Coordination polymer, Polymer chemistry, chemistry.chemical_element, 2-hydroxyterephthalic acid, Knoevenagel condensation, General Chemistry, Crystal structure, Heterogeneous catalysis
Published
2020
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9. Zn metal organic framework as a heterogeneous catalyst for the alkylation of toluene with benzyl bromide

Author

Saeideh Sadat Mortazavi and Faezeh Farzaneh

Subjects
Inorganic chemistry, 02 engineering and technology, Alkylation, 010402 general chemistry, 021001 nanoscience & nanotechnology, Heterogeneous catalysis, 01 natural sciences, Toluene, Catalysis, 0104 chemical sciences, chemistry.chemical_compound, Benzyl bromide, chemistry, Metal-organic framework, Physical and Theoretical Chemistry, 0210 nano-technology, Selectivity, Friedel–Crafts reaction, Nuclear chemistry
Abstract

Zn metal organic framework (Zn-MOF) was prepared with 1,3,5-benzene-tricarboxylic acid (BTC), Zn(OAc)2 and water under solvothermal condition and designated as Zn(BTC). It was characterized with XRD, FTIR and NH3-TPD and used as an alkylation catalyst. It was found that the alkylation of toluene with benzyl bromide proceeds to completion within 4 h at 60 °C, affording para-benzyltoluene with 74 % selectivity. Compared to ZnCl2, which catalyzes the partial conversion of toluene to para-benzyltoluene under optimum conditions, obtaining total conversion and higher selectivity with Zn(BTC) clearly reveals the key role of organic framework present in this catalyst. Zn(BTC) was also regenerated and reused three times in the cycle alkylation–regeneration with no significant loss of activity.

Published
2016
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