Spontaneous pneumothorax in a pregnant woman with COVID-19: a case report

Numerous symptoms and complications of COVID-19 include pneumothorax as a rare but potentially-lethal condition. The present case report involved a pregnant woman with COVID-19 presenting with pneumothorax. A 30-year-old pregnant woman with COVID-19 and a gestational age of 32 weeks presented to our hospital with dyspnea, coughs and fever. The rales initially heard in both lungs continued to be heard only in the left lung after 24 hours. Pneumothorax was confirmed through radiology. The emergency cesarean section performed to avoid the potential detrimental effects of the infection on the fetus caused no breathing episodes in the biophysical profile. The patient recovered postpartum without complications and both the mother and the newborn were discharged 12 days later. Spontaneous pneumothorax is a rare complication in COVID-19 pregnant patients that can emerge at any stage of the disease

Prioritization of factors affecting the safety of sport facilities in Kermanshah Based on AHP

This prioritize the factors affecting the safety of sport facilities based on AHP model is examined. This research strategy in terms of quantity and type AHP, in terms of sectional, both practical and in terms of gathering data is the type of field. The study was based questionnaire measurement elite views were set. In order to test the hypothesis-of a comparison test was used categories together. The Expert Choice software was used in this study. The findings obtained showed that 27 items in 5 categories are involved in determining the safety of sporting venues. On this basis and according to safety experts, sports facilities and sports equipment is the most important component of the Earth's surface. 0.320 is the significance of these items. Management factors weighing 0.268, 0.182 weight room equipment, first aid dressing and platform weighing 0.134 and 0.094 in second weight with the audience. The results showed that the use of safe floors, the use of qualified instructors, the use of appropriate sports flooring, installing warning signs in the hall and regular periodic visits to the salon equipment coefficients 0.070, 0.059, 0.052, 0.049 and 0.047 of the most important items in the factors affecting the safety of the sport

Investigation of Performance Management Behaviors in Educational Managers of Iran University of Medical Sciences

Performance management supports the power of knowledge in the academic system and makes this knowledge a comparative advantage. The amount of performance management behavior expressed by managers affects their assessment and ability to improve. Therefore, the present study aims to investigate the performance management behaviors expressed by the educational managers of Iran University of Medical Sciences. This is a descriptive-analytic study. The population under study includes the educational managers of Iran University of Medical Sciences. A census was applied as the sampling method. Performance Management Behavior Questionnaire (PMBQ) was applied as the data collection instrument. After evaluating the validity and reliability of this instrument, data would be analyzed through descriptive and inferential statistical tests. Of all distributed questionnaires, 144 were filled and recollected. The obtained means were average or higher for all aspects. The average score of male and female managers was respectively equal to 89.58 and 86.77. The total average score was 83.58 with the standard deviation of 6.4224. In no aspect, the difference between average scores of male and female managers was statistically significant. As to the performance expectations, there was a significant difference in behavior of managers with different management experiences (p=0.014). According to the results, the educational managers of Iran University of Medical Sciences have all evaluated their performance management behaviors to be generally desirable

COMPARING LITERATURE REVIEW USING PRE-STUDY (QUANTITATIVE) AND POST-STUDY (QUALITATIVE) METHODS IN THE AREA OF INFORMATION GATEKEEPING BASED ON EXPLORATORY BLENDED METHOD

Abstract. Grounded theory method can reveal social (behavioral, cultural and environmental) factors forming the foundation of informal behaviors of the scientists in the process of science production. Literature review is recognized as a part of the grounded theory method. Discussions about how to carry out the stages of a grounded theory study have come about since 1960. During the early years, the experts had reached a consensus over the idea that the literature review should be conducted in the final stages of this methodology so that the least bias and dogmatism could occur in the creation of a theory. But, the current viewpoints are laid on the foundation that the literature review in the seminal stages of grounded theory not only does not reduce degrade the study power but it also can augment creativity, theoretical sensitivity and precision thereof. The present study compares these two perspectives within the area of information gatekeeping. The study population included the medical genetics researchers from Mashhad’s medical sciences university who were assigned to two identical groups and examined by two researchers based on pre-study and post-study. After interviewing with the researchers, two questionnaire groups, including the information gatekeeping variables extracted from the interviews, were distributed amongst the study sample volume. The results indicated a trivial difference between the two variable groups. The notable point in the result was the respondents’ easier understanding of the variables defined assisted by the post-study.Keywords: grounded theory, literature review, information gatekeeping, pre-study in grounded theory, post-study in grounded theor

Optimization of dendrimer polyamidoamin eectrospun nanofibers: preparation and properties

Background: The most common polymers in the treatment of wounds are natural (e.g., polysaccharides, proteins, and peptides) and synthetic polymers (e.g., poly-glycolic acid, polyacrylic acid, polylactic acid, and polyvinyl alcohol) due to their biodegradability, biocompatibility, and their structural resemblance to the macromolecules known to the human body. Objectives: The current study aimed to develop an electrospinning method using the nanofibers of polyvinyl alcohol (PVA)/carboxymethyl cellulose (CMC)/polyamide amine (PAMAM)/tetracycline (Tet) to cover the wound. The antibacterial effect of PAMAM was also tested against E. coli and S. aureus bacteria. Materials and Methods: The morphology of the composite nanofiber was studied by a field emission scanning electron microscope. Infrared spectroscopy (FTIR) was used to characterize the nano chemical structure. Results: Nanofibers were evaluated based on the release of different amounts of the antibiotic tetracycline (1%, 3%, 5%, and 7% by weight) while preventing wound infection. The findings indicated that the highest-profile release of all nanofibers occurred early within 12 hours. It was found that nanofiber membranes loaded with 1%, 3%, and 5% tetracycline released drugs for over 28 days, while those containing 7% tetracycline released drugs for more than 14 days. Conclusions: According to the findings related to the drug release of PVA/CMC/15% PAMAM/Tet and surface morphology of the nanofibers, the optimal amount of Tet was 5%. The results of FTIR spectroscopy indicated that the tetracycline and polyamidoamine were successfully placed in nanofibers

The Relationship between Organizational Culture and Organizational Commitment by Benefiting by Fajr Jam Refinery

The aim of this study was to investigate the relationship between organizational culture and organizational commitment with employees’ productivity in Fajr Jam Gas Refinery. This research is descriptive-correlational. The statistical population includes all employees of the company (968 people). Based on Morgan table, 280 subjects were selected by simple random sampling method and for data collection the questionnaire of corporate culture, organizational commitment and productivity were used. Pearson correlation test and regression analysis were used for data analysis. The results showed that there is a significant relationship between the dimensions of organizational culture and employees’ productivity. Productivity is predictable through dimensions of organizational culture, dimensions of organizational commitment, and through organizational culture

Crisis Management Patterns in the Lives of Ibna Al-Reza (PBUH); a Case Study of the Economic Crisis

A crisis is an unexpected and sometimes growing event that imposes problems on society and becomes an acute and unstable situation for individuals or society, the solution of which requires fundamental measures. In the history of Shiite Imamate, the years 203 to 260 AH (819 to 874 B. C.) are dedicated to the leadership and supervision of Ibna Al-Reza (PBUH), those Imamas who were the offsprings of Imam Reza (PBUH). Friendship with Imam Javad, Imam Hadi and Imam Askari (PBUH) was being led to consequences such as confiscation of property, dismissal from work, poverty and destitution. By taking measures and making decisions, Ibna al-Reza (PBUH) were able to improve the unfavorable economic situation of the Shiites. This article, which was organized by descriptive-analytical method, summarizes the actions of the late Shiite Imams in order to prevent and prepare confrontational and deterrent strategies in three stages: "before the crisis", "during the crisis" and "after the crisis". This article has categorized and introduced management principles that can be considered by citizens in the present era

Physical and Chemical Properties of CEM Cement Mixed with Propylene Glycol

Introduction: the aim of the present study was to evaluate the influence of propylene glycol (PG) on the flowability, microhardness, pH and calcium ion release of calcium-enriched mixture (CEM). Methods and Materials: CEM cement was mixed with different proportions of PG, as follows: group 1,100% CEM liquid (CL); group 2, 100% PG; group 3, 50% PG and group 4, 20% PG. For assessment of flowability, methodology of ADA Specification No. 57 was applied. For measuring microhardness, 80 cylindrical molds (6×4 mm) were filled with CEM cement and divided into 2 subgroups (4, 21 days) and tested using Vickers Test. Data were analyzed using the one-way ANOVA test and Tukey’s post hoc and student’s t test. In order to check pH and calcium release, the mixed cements were placed in cylindrical molds (5×2 mm). After 3, 24, 72 and 168 h, pH determined by a pH meter and the calcium release was measured by an atomic absorption spectrophotometer. Data were analyzed using the repeated measure ANOVA, one way ANOVA test and Tuckey’s post hoc test. Results: The present study showed that the presence of PG did not affect the flowability. With the elapse of time, microhardness was significantly increased in all groups except CL group. Regardless of time, samples with 50% PG showed the lowest pH value which was significantly different from other groups (P<0.05) and samples with 100% and 20% PG showed significantly higher calcium ion release compared to other group. Conclusion: addition of PG did not have any positive or negative effect on the flowability and pH of CEM cement but increased its microhardness in long term. Calcium ion release also increased in the concentration of 20% and 100%.Keywords: Calcium-Enriched Mixture Cement; Calcium Release; Flowability; Microhardness; pH; Propylene Glyco

Investigation of Performance Management Behaviors in Educational Managers of Iran University of Medical Sciences

Performance management supports the power of knowledge in the academic system and makes this knowledge a comparative advantage. The amount of performance management behavior expressed by managers affects their assessment and ability to improve. Therefore, the present study aims to investigate the performance management behaviors expressed by the educational managers of Iran University of Medical Sciences. This is a descriptive-analytic study. The population under study includes the educational managers of Iran University of Medical Sciences. A census was applied as the sampling method. Performance Management Behavior Questionnaire (PMBQ) was applied as the data collection instrument. After evaluating the validity and reliability of this instrument, data would be analyzed through descriptive and inferential statistical tests. Of all distributed questionnaires, 144 were filled and recollected. The obtained means were average or higher for all aspects. The average score of male and female managers was respectively equal to 89.58 and 86.77. The total average score was 83.58 with the standard deviation of 6.4224. In no aspect, the difference between average scores of male and female managers was statistically significant. As to the performance expectations, there was a significant difference in behavior of managers with different management experiences (p=0.014). According to the results, the educational managers of Iran University of Medical Sciences have all evaluated their performance management behaviors to be generally desirable