Hydrothermal Synthesis of Highly Uniform Chalcopyrite CuFeS2 Nanoparticles

In this research work, high uniform CuFeS2 chalcopyrite with 20-40 nm particles were synthesized via a simple hydrothermal method. Different analysis were used to characterize the obtained product such as X-ray diffraction pattern (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and thermal gravimetric analysis (TGA). The photocatalytic activity of the product was investigated by degradation three different dyes namely acid brown, acid red and methylene blue. The results showed the synthesized CuFeS2 nanoparticles have high photocatalytic activity and can degrade the used dyes in large quantities

Explaining the role of organizational culture on succession-planning at the Ministry of Health and Medical Education: A qualitative study

Background: Developing and guiding new knowledge are futile unless the organizational culture can also be transformed. Future leaders cannot emerge out of an organizational environment that is not conducive to the accumulation of experiences. Objective: The aim of this study was to explore the role of organizational culture in creating a succession- planning system at the Ministry of Health and Medical Education in 2014. Methods: The present qualitative framework analysis held interviews with 23 director generals, administrative directors and deputies from the headquarters of the Iranian Ministry of Health and Medical Education in 2014 who were selected through snowball sampling. The data obtained were analyzed in MAXQDA-10. Codes were extracted using inductive techniques. Results: The cultural factors affecting succession-planning at the Ministry of Health and Medical Education were identified and classified under three main areas, including the cultural factors related to the directors with four themes (Directors’ job security, Constructive competition, Transparency and trust development, Creating opportunities), to the personnel with four themes (Organizational identity and loyalty, Trust in the organization, Talent and merit, Peer envy) and to the system with two themes (Values and beliefs, Politicization). Conclusion: Findings of the study show that establishment and institutionalization of the succession planning to the Ministry of Health and Medical Education is deeply affected by the components of organizational culture. Accordingly, unprofessional organization culture can deprive the organization of numerous advantages in multiple-succession planning

Compare styles for encounter to stress, life expectancy and scale of hardness in patients stricken to AIDS and MS

The aim of this research is to compare styles encounter to stress, Life Expectancy and scale of hardness in patients Stricken to AIDS and MS. The method is practical- comparative type. The society consists of all patients Stricken to aids and MS who refereed in order to receive specialty treatment to Imam Khomeini Hospital and Sina Hospital in Tehran. From said society, a sample with volume 100 people (50 patients Stricken to AIDS and 50 patients Stricken to MS) were selected by sampling and have been evaluated by Cobasa and Maddi Personal Insight questionnaire and Schneider scale of hope 1991, style encounter with stress of Endler and Parker 1990. Then, data collected have been analyzed by descriptive methods and SPSS software. The results of research showed that there is significant difference between two groups of patients Stricken to AIDS and MS from style of encounter point of view with stress, as if patients Stricken to AIDS use more avoidance styles and patients Stricken to MS use more encounter styles. Also, there was significant difference between two groups from Life Expectancy as if patients Stricken to AIDS use more avoidance style and patients Stricken to MS use more emotional style. Also, there was significant difference from Life Expectancy. In other word, scale of Life Expectancy was more in MS group to AIDS. In addition to, there was difference from hardness point of view. In other word, scale of hardness is more than MS to AIDS

Chest pain units: A necessity or only a name to encourage patients

BACKGROUND: Acute chest pain is a common symptom among patients presenting to emergency wards. Identification and admission of patients with real acute coronary syndrome and preventing the hospitalization of people with false diagnosis of coronary syndrome are the most important tasks in emergency wards. The purpose of this study was to investigate the usefulness of designing a special chest pain unit in emergency department of Imam Khomeini Hospital (Ahvaz, Iran). &nbsp;&nbsp; METHODS: The patients with markers of ongoing cardiac ischemia underwent selective coronary angiography. The chest pain unit protocol was applied to selected patients with no definite evidence of acute coronary syndrome or alternative pathology. The protocol consisted of twelve hours of observation and serial 12-lead electrocardiography, transthoracic echocardiography, and biochemical testing followed by an exercise treadmill test. We compared the number of patients who were discharged after work up, discharged themselves against medical advice, admitted at coronary care unit (CCU), underwent invasive procedures or died between 2007 and 2010. &nbsp;&nbsp; RESULTS: During 2010, 43% of patients were discharged after evaluation in the chest pain unit. In 2007 however, 26% were discharged following traditional assessments. The admission rate increased from 23% in 2007 to 36% in 2010. The percentage of patients who discharged themselves against medical advice decreased from 37% in 2007 to 14% in 2010. There was not a statistically significant difference between mortality rates in 2007 and 2010. &nbsp;&nbsp; CONCLUSION: Providing a special chest pain unit in emergency ward in our condition is helpful. It reduces unnecessary admissions and improves patient satisfaction. &nbsp; &nbsp; &nbsp; Keywords: Chest Pain Unit, Acute Coronary Syndrome, Myocardial Infarction &nbsp;</p

Predictive role of Doppler indices of cerebral–placental–uterine ratio and umbilico-cerebral ratio for late-onset fetal growth restriction: a prospective cohort study

Predicting late-onset foetal growth restriction (FGR) has proven to be rather challenging. In this study, we propose a new parameter, cerebral–placental–uterine (CPU) ratio and umbilico-cerebral (UC) ratio for this matter. Results of this study which included a total of 227 nulliparous women showed that an increase in CPU ratio (OR = 0.45; 95% CI: 0.23–0.88; p=.020) was associated with lower odds of foetal weight above the 10th percentile at birth. CPU ratio measured at 35–37 weeks of gestation had an AUC of 0.78 (95% CI: 0.58, 0.98), sensitivity of 0.62 (95% CI: 0.24, 0.91) and specificity of 0.90 (95% CI: 0.79, 0.96) for prediction of late-onset FGR, which showed higher accuracy than UC ratio. As some cases of the late-onset FGR are not diagnosed by foetal biometry, it is important to find Doppler parameters that can help us predict these cases and CPU ratio may help physicians in detection of high-risk foetuses that will benefit from earlier intervention. Impact Statement What is already known on this subject? Late-onset foetal growth restriction (FGR) defined by an FGR diagnosis after 32 weeks of gestational age, can lead to short- and long-term morbidities and early diagnosis is the key to prevent these complications. What do the results of this study add? Results showed that each unit increase in numeric variables including CP ratio (OR = 0.29, p=.006), and CPU ratio (OR = 0.40, p=.006) was associated with lower odds of the foetal weight above the 10th percentile in the second ultrasound at 35–37 weeks. In other words, CPU ratio can prove to be useful marker in prediction of late-onset FGR. What are the implications of these findings for clinical practice and/or further research? Our prospective cohort study confirms the added value of low CPU ratio, with higher predictive accuracy than UC ratio, in predicting late-onset FGR. Detection of late FGR remains poor, but it is important to prevent stillbirth so further studies on the role of CPU ratio in predicting FGR and perinatal outcomes are needed