Showing 9 results for Najafi
R Rostami, A Nabaey, H Najafi Saleh, H Najafi Saleh ,
Volume 7, Issue 2 (4 2009)
Abstract
Background and Aim: In the initial preparation stage, before feeding worms with organic wastes, the wastes are pre-composted for some time. This was done so that the thermophilic phase of organic wastes degradation is passed, no harm is done to the worms which are sensitive to high temperatures, production of fertilizer faster is quicker, and biological contamination is reduced. The length of this preparation time is important with regard to the quality of the compost obtained, the vermicomposting process, and space and facilities needed. The purpose of this study was to determine the effect of preparation time of food wastes on the vermicomposting process without any preliminary action or continuous aeration.
Materials and Methods: The Eisenia Foetida species was used for vermicomposting. Food waste preparation times of 0,6,12 and 18 days were attempted, and factors such as pH, C%, N%, C/N ratio, and the process rate were monitored during the process.
Results: The lowest and highest final C/N ratios were seen on days 6 and 18 of preparation, respectively. The data also showed that the highest reduction (64.93) in this ratio was observed on 6 day and the lowest (36.56) on day18.
Conclusion: On the basis of these findings it can be concluded that there is a significant difference among various food waste preparation times with regard to C/N ratio (p-value<0.05), the preparation time is effective on the C/N ratio, and the most appropriate length of time for preparation is 6-12 days.
Fatemeh Heydarpour, Kazem Mohammad, Sousan Heydarpour, Farid Najafi, Kourosh Holakouie Naieni,
Volume 10, Issue 3 (26 2013)
Abstract
Background and Aim: The time needed to achieve a wanted pregnancy is referred to as time to pregnancy (TTP). Due to differences in lifestyles and geographical locations in different countries, factors affecting TTP may be different in various countries. This study was conducted in 2011 to determine factors affecting time to TTP in Kermanshah, Iran.
Materials and methods: In this case-control study 174 women with TTP>12 months (cases) and 587 women with TTP<=12 months (controls) were selected. The tool for collecting data was a questionnaire. The SPSS-16 software was used for data analysis, a p-value <0.05 being considered as statistically significant.
]Results: Multivariate analysis showed that factors decreasing TPP statistically significantly were women's education level (≥high school diploma OR=0.854, CI 95%=0.741-0.984), frequency of intercourse in a week (OR=0.728, CI95%=0.631-0.839), blood group A compared to O (OR=0.639, CI95%=0.405-1.01), and non-exposure to smoking (OR=0.606, CI95%=0.380-0.965). On the other hand, factors increasing TPP were a woman's irregular menstrual cycle (OR=3.701, CI95%=2.127-6.441), lack of physical activity (OR=1.920, CI95%=1.263-2.918) and a body mass index (BMI) higher than 25 (OR=2.221, CI 95%=1.489-3.312).
Conclusion: According to the results of this study, a high BMI and lack of exercise increase, while factors such as frequency of intercourse decrease the length of TTP. Couples seeking medical intervention for pregnancy often disregard factors associated with TTP. It is recommended that care-providers support these couples, promote their awareness, and give them suitable advice.
Elham Madreseh, Mahmood Mahmoodi, Seyed Mostafa Hosseini, Hojjat Zeraati, Iraj Najafi,
Volume 11, Issue 4 (3-2014)
Abstract
Background and Aim: In many medical studies along with longitudinal data, which are repeatedly measured during a certain time period, survival data are also recorded. In these situations, using models such as, mixed effects models or GEE method for longitudinal data and Cox model for survival data, are not appropriate because some necessary assumptions are not met. Instead, the joint models have been introduced, to consider: 1- measurement error in time-dependent covariates 2-monotone and non-ignorable missing data which occurs after an event and 3- relation between longitudinal and survival outcomes, simultaneously. At this paper, joint model Puts longitudinal response (i.e. creatinine) as a time dependent variable, along with other covariates in survival sub model, to investigate dialysis patients survival.
Materials and Methods: This research contained information about 417 patients affected to chronic renal failure, under treatment of continuous ambulatory peritoneal dialysis (CAPD) method. Patients were referred to three medical centers in Tehran (Shariati, Modares and Shafa) between 1997 to 2009.In this study longitudinal data and time dependent covariate were used Therefore, different variables for each person at certain time have been measured. In first some information was gathered from patient’s file, and then effective factors on survival of patients have been determined by using joint model. Results were compared with naive analysis (extended Cox model). For data analyzing, R software and significant level of 0.05 have been used.
Results: with using joint model sex, age, diabetes, diastolic blood pressure, haemoglobin, urea, LdL, and creatinine covariates were significant. In extended Cox model, only age and Diastolic blood pressure covariates were considered as effective factors on hazard of death in patients.
Conclusion: Joint model assess the effective factors on both endpoints simultaneously. Also it considers missing data that appeared due to an event, and covariates which were measured with error. Therefore in these cases, using joint models that led to better results and more knowledge about dieses, are necessary.
Roya Safari, Narges Khanjani, Farid Najafi,
Volume 12, Issue 3 (1-2015)
Abstract
Background and Aim: Suicide by burning is one of the main health problems very common among women living in the west part of Iran. The objective of this study was to explore its causes and preventive strategies from the viewpoint of healthcare providers .
Materials and Methods: This was a qualitative study, using semi-structured interviews, carried out in Kermanshah. The participants were the health care personnel working in Imam Khomeini Hospital, a teaching hospital and referral center in the west part of Iran. Sampling was purposeful and continued until data saturation. Data analysis was conducted through thematic analysis.
Results: Four themes were extracted for the causes of self-immolation including cultural context, mental health problems, self-immolation as a way to highlight the outcry, and economic problems. As regards prevention strategies, two main themes, namely, cultural changes and mental education and services, emerged.
Conclusion: Self-immolation is a multi-dimensional phenomenon. Different factors interact, resulting in self-immolation by women in stressful situations. Comprehensive preventive strategies such as education, as well as cultural changes, can help to reduce the burden of self-immolation.
Afzal Akbaribalootbangan, Mahmood Najafi, Jalal Babaee,
Volume 14, Issue 1 (6-2016)
Abstract
Background and Aim: The present research aimed to study the psychometric characteristics of a subjective well-being questionnaire among high school students.
Materials and Methods: This was a descriptive correlational study. A total of 400 high school students (200 boys and 200 girls) in the City of Ghom, Iran were selected by multistage cluster sampling. Data were collected using the Oxford subjective well-being and happiness inventory questionnaire. Factor analysis and Cronbach's alpha coefficient and the Pearson correlation test were used to analyze the data.
Results: Factor analysis showed that the scale was saturated with four factors. In addition, Pearson correlation test indicated that subjective well-being was positively associated (p < 0.01) with happiness (r=0.27), discipline (r=0.11) and academic achievement (r=0.28). Also the reliability of the subjective well-being questionnaire using Cronbach's alpha was found to be 0.87 for the total scale and 0.69, 0.85, 0.73 and 0.78 for the subscales school connectedness, joy of learning, educational purpose and academic efficacy, respectively; these findings indicate that the tool used was quite good and reliable.
Conclusions: Based on the findings is concluded that the Persian version of the subjective well-being questionnaire is an acceptable tool to determine the psychometric characteristics of high school students and can be used as a valid instrument in psychological research.
Rezvan Kakavand-Ghalehnoei, Zabihallah Shoja, Alireza Najafi, Mostafa Haji Mollahoseini, Somayeh Jalilvand,
Volume 14, Issue 3 (12-2016)
Abstract
Background and Aim: Considering the lack of information on the occurrence of the epidemic form of Kaposi’s sarcoma (KS) and the high prevalence of human herpesvirus 8 (HHV-8) infection among human immunodeficiency virus (HIV)-infected patients (46%), it was decided to estimate the incidence of KS in this group. Based on the fact that active HHV-8 infection leads to KS development, it is essential to first assess the prevalence of active HHV-8 infection in these patients. Most of the Iranian HIV-infected patients are not aware that they are HIV-positive. If the prevalence of HHV-8 infection is high in these patients, they may spread HHV-8 in the community by high-risk sexual behaviors, which would lead to an increase in the incidence of classic Kaposi’s sarcoma. The objective of this study was to investigate the prevalence of HHV-8 among HIV-infected subjects.
Materials and Methods: One-hundred plasma samples from HIV-infected patients were collected. Genome was extracted and assessed by the nested PCR assay with specific primers for ORF26. Positive samples were amplified for the ORF K1 region by nested-PCR. Subsequently their products were sequenced and their phylogenic trees constructed.
Results: HHV-8 was detected in 8 of the patients (8%). No statistically significant associations were found between age and gender on the one hand and HHV-8 infection on the other (p > 0.05). Two genotypes, namely, A and C, were identified, the former in two patients and the latter in one.
Conclusion: Although the prevalence of HHV-8 infection is high among Iranian HIV-infected patients, active HHV-8 infection rate is low among them. Therefore, it seems that the incidence of epidemic KS is likely to be very low in this group. Certainly more research is needed in this area. As regards genotypes, genotypes A and C are found in the samples.
Zeinab Khaledian, Javad Moazzeni, Liela Najafi, Nasim Badiei, Fatemeh Yonesi,
Volume 22, Issue 4 (3-2025)
Abstract
Background and Aim: Providing high-quality prenatal and postnatal care plays a crucial role (during pregnancy and at labor) in reducing maternal and neonatal mortality and complications, improving outcomes, and increasing patient satisfaction and enhancing healthcare system efficiency. This study aimed to assess the quality of intrapartum care using the Comprehensive Quality Measurement in Health Care (CQMH) model.
Materials and Methods: This was a descriptive study conducted in 2020 at Ommol banin hospital in Mashhad, Iran, including 324 mothers admitted for childbirth. Participants were selected through simple random sampling and data were collected using the CQMH questionnaire, which assesses three dimensions of care quality, namely, technical quality, service quality, and customer (client) quality. Data analysis was performed using the SPSS version 27.
Results: The overall quality index score was 80.9. Technical quality was rated as favorable (mean score: 90.3), while service quality (mean score: 79.5) and customer quality (mean score:73) were rated as moderate. As regards service quality communication, continuity of care and preventive measures had the lowest scores.
Conclusion: While the technical quality of intrapartum care was found to be satisfactory, there is a pressing need to strengthen provider–patient communication and empower mothers to actively participate in theirown care during childbirth.
Mansoureh Ganjali, Leila Najafi, Zeinab Khaledian,
Volume 23, Issue 1 (6-2025)
Abstract
Background and Aim: The return of working mothers to the workplace after maternity leave is a critical and complex stage in women's career paths, influencing the balance between their familial and professional roles. Understanding the challenges at this stage is essential for improving policies and support systems.
Materials and Methods: This qualitative study, employing content analysis, was conducted in 2025 at Zahedan University of Medical Sciences. The study population included employed mothers after childbirth and health sector managers. Data were collected through semi-structured interviews and analyzed using conventional content analysis. Ethical principles and data validation were emphasized.
Results: A total of 30 participants, including 20 employed mothers’ post-childbirth and 10 managers, were included. The findings were categorized into five main themes: psychological, familial, organizational, cultural and social, and legal and supportive challenges, encompassing 13 subthemes and 34 distinct codes.
Conclusion: According to the findings, revising organizational policies, enhancing legal awareness, and providing a flexible and supportive work environment for employed mothers are essential. Given the unique cultural and social characteristics of Sistan and Baluchestan province, this study can guide policymakers and health managers in improving working conditions for mothers.
Mina Molaei, Zeinab Khaledian, Leila Najafi, Shaqayegh Vahdat, Ali Fakhr Movahedi,
Volume 23, Issue 2 (9-2025)
Abstract
Background and Aim: The nursing profession, as a vital pillar of the healthcare system, plays a crucial role in delivering health and medical services. In clinical settings, teamwork and conflict management are key factors for improving the quality of care and reducing workplace stress. A positive attitude toward teamwork can enhance conflict management skills and contribute to higher job satisfaction among nurses. This study aimed to investigate the relationship between teamwork attitude and conflict management among nurses, to better understand this association and propose strategies to improve team collaboration and reduce conflicts in healthcare settings.
Materials and Methods: This quantitative descriptive-analytical cross-sectional study was conducted in 2025 in Tehran. After obtaining the necessary permissions, the researcher visited three hospitals affiliated with Azad University and distributed online questionnaires among nurses. The collected data were analyzed using SPSS software.
Results: Findings indicated that 63% of the nurses were female, and 44% were aged between 30 and 40 years. Eighty-five percent held a bachelor's degree, 49.5% were formally employed, and 37.5% worked at Farhangian Hospital. A strong positive correlation was observed between teamwork attitude and conflict management (r = 0.815). Significant differences in conflict management were noted across age groups (p = 0.03) and work experience (p = 0.03).
Conclusion: The results suggest that demographic factors such as age, marital status, and employment type significantly influence nurses’ conflict management and teamwork. Specifically, experience, communication skills developed with age, and social support among married nurses enhance team interactions. Moreover, cultural and organizational factors affect the impact of gender and work environment on conflict management. Therefore, targeted training and the establishment of supportive structures for diverse groups are essential for promoting effective teamwork in healthcare settings.
