The Journal of

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Introduction: Increased demand for consumption of health food with desired sensory properties has led to innovation and new product development in the food industry all over the world. Therefore, the current study aimed to investigate the effect of different concentrations of T. polium oil essential (EO) on chemical and organoleptic properties of Iranian white cheese.

Methods: In this study, qualitative properties (protein, fat, salt and pH) of Iranian white cheese processing with T. polium EO at different concentrations (15, 30 and 60 ppm) were evaluated during two-month ripening period (the interval within 15th). Furthermore, the sensory properties of all cheese samples were determined at the end of the ripening period.

Results: A gradual and continuous reduction was observed in pH value of all cheese samples within the cheese ripening. Cheese samples containing EO had lower pH values compared with the control cheese, so as at the end of the storage period, the lowest pH (3.38) was obtained from the cheese containing 30 ppm of EO. Moisture content of all cheeses was significantly decreased and salt as well as protein content significantly increased during the ripping, whereas the fat in dry matter (FDM) content of all cheeses did not change significantly during the storage (P<0.05). At the end of storage period, the cheese sample containing 30 ppm of EO demonstrated the lowest humidity (62.42%). Based on the findings from sensory evaluation, the best concentration of EO in regard with cheese production with organoleptic properties was 30 ppm.

Conclusion: According to the findings of the present study, T. polium EO along with other protective methods can be considered as an acceptable alternative to chemical preservatives and synthetic aromatizers. In addition, it can be used in manufacturing the food products with new flavor properties especially such highly-consumed dairy products as cheese.

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Introduction: Job stress is one of the most important phenomena in social life and is a serious threat to the health of the workforce in the world. Job stress can cause occupational accidents and incidents resulting injuries to people and damage equipment of the workplace. Firefighting is also one of the most stressful occupations. Firefighters are among the most important specialty occupation that need to be physically and mentally fit to perform safely their missions and tasks. The purpose of this study was to investigate the relationship between occupational stress and work accidents among the staff of fire department and safety services of Yazd city.
Methods: This is a descriptive study that was performed on 9 individuals who were selected from the whole statistical population by available sampling method. The validity coefficient of job stress questionnaire was 0.78 and the validity of both questionnaires was confirmed by some experts. Statistical methods used in this study include descriptive and inferential statistics (Pearson correlation coefficient and regression analysis) which were performed by spss12 software.
Results: he results showed that occupational stress was higher than usual and there was a significant relationship between occupational stress and variables such as physical status of workplace, work injury and injury, time pressure at work, workplace problems and decision making at work. The severity of the correlation between all of these cases is strong except for moderate to severe accidents and stress also plays an important role in predicting the rate of accidents.
Conclusion: According to the findings of the study of employees exposed to stress, they are more weakened and suffering from low spirits and stress indifferent to tasks, decreasing the energy of adaptation of employees, decreasing efficiency, problems in decision making, Disrupting organizational communication and decreasing job values and organizational productivity of firefighting staff are therefore important in assessing job stress on firefighters.
 

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Introduction: Knowledge, as the most important asset of an organization, is regarded as an economic resource. The need for and attainment of the benefits of knowledge management in health centers is highly important and sensitive because we are always faced with a flood of information about patients in health centers. Therefore, the present study was conducted in collaboration with Shahid Rahnemoon Hospital of Yazd to study the impact of organizational culture and information-communication technology on productivity, service quality, customer satisfaction and change management through knowledge management.
Methods: The data of this descriptive survey was collected by a researcher-made questionnaire with confirmed validity and reliability. The statistical population of the study included the employees and treatment staff of Shahid Rahnemoun Hospital in Yazd. As a result, 272 questionnaires were distributed and structural equation modeling was run using SPSS and AMOS software.
Results: The results showed the significant and positive impact of organizational culture and information and communication technology on productivity, quality of service, customer satisfaction, and change management through knowledge management at Shahid Rahnemoon Hospital in Yazd.
Conclusion: In order to implement knowledge management, information and communication technology and organizational culture should be considered in our environment. Furthermore, implementing knowledge management in the organization can improve productivity factors, quality of service, customer satisfaction, and management change. This study investigated the simultaneous effects of organizational culture, information and communication technology, productivity, service quality, customer satisfaction, and management change on research innovation knowledge management.
 

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Introduction: The elderly are at risk of COVID-19, so preventive behaviors play an important role in reducing the incidence and mortality of this disease among this group. This study aimed to investigate the preventive behaviors of COVID-19 disease and its related factors in the elderly of Hamadan.
Methods: This cross-sectional study was conducted on 370 elderly people covered by retirement centers in Hamadan in the second half of 2021. The subjects were selected by multi-stage sampling method. The researcher-made questionnaire was used for data collection containing demographic variables and questions related to preventive behaviors. The data were analyzed by SPSS16 software using descriptive statistics.
Results: The mean age of the participants was 64.11 ± 4.47 (ranging from 60 to 87 years). They were in a good condition in terms of refraining from handshakes or kisses and frequent hand washing with soap and water, and they were in unfavorable condition in terms of using gloves. There was a significant relationship between gender, occupation, and death of spouse or children with preventive behaviors.
Conclusion: It is necessary to identify the factors affecting the performance of preventive behaviors in order to increase these behaviors in the elderly as one of the high-risk groups.

 
 

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Introduction: Social capital encompasses material and spiritual resources which enable individuals to establish stable networks of institutionalized relationships. Participation in voluntary public service activities at the community level serves as an indicator of social capital. This study aims to assess social capital and voluntary activities among older adults living in Tehran in 2021.
Methods: This cross-sectional study included 384 older adult citizens residing in Region 19, selected through random sampling. Data collection involved a standardized questionnaire comprising three sections: demographic information, measuringsocial capital, and voluntary activity assessment.
Results: The study found that 99/7% of respondents had an average social capital score (150-75). Additionally, 99/4% of the respondents exhibited a high level of engagement in voluntary activities. A significant relationship was observed between social capital ,age (P≤0/001),and marital status (P≤0/001). However, no significant relationship was found between voluntary activity and demographic information.
Conclusion: This study suggests that older adults in Tehran possess a reasonable level of social capital and engage actively in voluntary activities. To harness this potential, effective planning and policies must be implemented to align with the needs and goals of society.