Studies on electrochemically synthesized polyaniline and its copolymers

Pengelektropolimeran oksidaan anilina di dalam asid fosforik di atas grafit komposit pensil 2B telah disempurnakan dengan menggunakan beberapa garam takorganik yang dipilih sebagai elektrolit penyokong. Oxidative electropolymerization of aniline in phosphoric acid on 2B pencil composite graphite was accomplished using some selected inorganic salts as supporting electrolytes

2017 Ayvacık depremlerinden etkilenen Yukarıköy geleneksel taş evlerinin durumu

Turkey is considered one of the most earthquake-prone countries in the world. Turkey has hosted many important civilizations in history. Some of the important structures and settlements symbolizing the socio-economic and cultural life of these civilizations have survived to the present day. Located in the rural areas of Turkey, many of the new masonry structures that continue to be constructed under the influence of the structural culture formed by the civilizations are also under the influence of earthquake loads. FebruaryMarch 2017 Çanakkale/Ayvacık-based earth-quakes caused significant damage to the traditional masonry structures. The region in which Gülpınar based earthquakes took place has a significant historical background. The geography of the region where the earthquake took place hosts different civilizations from the chalcolithic period to the present. The examination of this region is important in that it is an earthquake region as well as having a noteworthy historical background. This study examines the behavior of the masonry structures damaged by the mentioned earthquakes, and the causes of damage. The study also reveals the importance of the architectural design of structures under the effect of the earthquake to its users. In the period of new settlement that will take place after the earthquake, in the light of the analyzes, suggestions have been made in order to bring out the structures that are comfortable, safe, and sustainable, considering the structural culture of the region.Türkiye bir deprem ülkesidir. Türkiye’nin bulunduğu topraklar aynı zamanda önemli medeniyetlere ev sahipliği yapmıştır. Bu medeniyetlerin sosyo-ekonomik ve kültürel yaşamlarını simgeleyen önemli yapı ve yerleşmelerin bir bölümü günümüze kadar ayakta kalmayı başarmıştır. Medeniyetlerin oluşturduğu yapısal kültürün etkisinde yapılmaya devam eden yeni yığma yapıların büyük bir bölümü Türkiye’nin kırsal bölgelerinde yer alırken aynı zamanda deprem yüklerinin etkisi altındadır. Şubat-Mart 2017 Çanakkale/Ayvacık merkezli depremler bu bölgedeki geleneksel yığma taş yapılarda önemli hasarlar oluşturmuştur. Gülpınar merkezli depremlerin gerçekleştiği bölge önemli tarihi geçmişe sahiptir. Depremin gerçekleştiği Bölgenin Coğrafyası elverişli olduğundan, kalkolitik döneminden günümüze kadar farklı medeniyetlere ev sahipliği yapmıştır. Bir taraftan deprem bölgesi olması, diğer taraftan önemli tarihi geçmişe sahip olan bölgenin incelenmesi önemlidir. Bu Çalışma, adı geçen depremlerin etkisinde hasar görmüş yığma taş yapıların depreme karşı davranışı ve hasar nedenleri incelenmiştir. Çalışmada ayrıca, depremin etkisindeki yapıların mimari kurgusunun kullanıcıları için ne derece önemli olduğunu ortaya çıkarılmıştır. Depremden sonra bölgede gerçekleşecek yeni yapılaşma döneminde, bölgenin yapısal kültürü dikkate alınarak konforlu, güvenli ve sürdürülebilir özellikte yapıların ortaya çıkması için analizler ışığında öneriler geliştirilmiştir

Joint Congestion and Contention Avoidance in a Scalable QoS-Aware Opportunistic Routing in Wireless Ad-Hoc Networks

Opportunistic routing (OR) can greatly increase transmission reliability and network throughput in wireless ad-hoc networks by taking advantage of the broadcast nature of the wireless medium. However, network congestion is a barrier in the way of OR\u27s performance improvement, and network congestion control is a challenge in OR algorithms, because only the pure physical channel conditions of the links are considered in forwarding decisions. This paper proposes a new method to control network congestion in OR, considering three types of parameters, namely, the backlogged traffic, the traffic flows\u27 Quality of Service (QoS) level, and the channel occupancy rate. Simulation results show that the proposed algorithm outperforms the state-of-the-art algorithms in the context of OR congestion control in terms of average throughput, end-to-end delay, and Packet Delivery Ratio (PDR). Due to the higher PDR at different traffic loads and different node densities, it can be concluded that the proposed algorithm also improves network scalability, which is very desirable given the recent changes in wireless networks

The Impact of Accreditation on the Performance of Hospital Emergency Departments

Background & Objectives: Accreditation, as a formal external evaluation system, has a critical role in improving quality, safety and effectiveness of hospital services. The aim of this study was to evaluate the effects of accreditation standards on the performance of Accident and Emergency (A&E) departments of hospitals in Sari, Iran. Methods: This cross-sectional descriptive - analytic study was carried out in eight hospitals in Sari, Iran. Information related to the accreditation scores and five performance indicators of A&E departments (i.e., average triage time, percentage of cardiopulmonary resuscitation failure, percentage of patients who were decided upon within 6 hours, percentage of patients sent out of the A&E department within 12 hours and percentage of patients left A&E department against the medical advice) in (March 2013 and March 2014) and (March 2014 and March 20115) were gathered form hospitals and accreditation office of Mazandaran University of Medical Sciences. Data were analyzed through SPSS (V.22) software and using descriptive and inferential statistics. Results: The mean scores of accreditation of A&E departments in 2013 and 2014 were 76% and 62.2% respectively. The differences between performance indicators of A&E departments in 2013 and 2014 were not statistically meaningful. There was no significant relationship between accreditation and the performance of A&E departments of hospitals. Conclusion: Accreditation did not improve A& E performance in Sari hospitals. Hence, there is a pressing need for improving hospital accreditation system including standards, methods and surveyors. Besides, hospital managers should use internal quality management systems to complement and strengthen the impact of external accreditation system in improving key performance indicators of hospitals. Key¬words: Standard, Accreditation, Accident and emergency department, Key performance indicators, Hospital Citation: Pourreza A, Mosadeghrad AM, Zoleikani P. The Impact of Accreditation on the Performance of Hospital Emergency Departments. Journal of Health Based Research 2017; 3(3): 277-295

Value of Admission HbA1c Level in Non-diabetic Patients With Unstable Angina

Introduction: There have been incompatible evidences about the prognostic value of HbA1c on the adverse outcomes in acute coronary syndrome. Also, these data are so limited in nondiabetic patients with unstable angina.Methods: In this cross-sectional study, HbA1c level of 231 nondiabetic patients admitted with unstable angina, was measured using high performance liquid affinity chromatography (HPLC) at admission. Then transthoracic echocardiography (TTE) was performed for evaluation of ejection fraction (EF) using Simpson method.Results: Our data revealed that HbA1c was significantly higher in patients with EF≤ 50% in comparison with EF>50% group (P value=0.01).Conclusions: HbA1c may be a helpful prognostic marker in nondiabetic patients admitted in emergency department with diagnosis of unstable angina

Is Additional Fluid Therapy Effective in the Treatment of Children with Urinary Tract Infection?

Introduction: Urinary tract infection can result in many complications such as abscess, hypertension, renal failure, renal scar, reflux, etc. Since there is no general agreement on the administration of additional fluid (1.5 times maintenance) for the early treatment of UTI, this study was conducted to evaluate the effect of additional fluid therapy.Materials and Methods: In This clinical trial study, 206 children with UTI who were admitted at Amir Kabir Hospital (Arak, Iran) from March 2012 to March 2013 were divided into two groups of 103. One group received the usual amount of maintenance fluid while the other group received 1.5 times more than usual maintenance. The course of the resolution of dysuria, frequency, malodorous urine, abdominal pain, and fever was compared between the two groups. Urine culture was performed for all patients 2, 7-10, and 90 days after admission. The patients were age and sex matched. The data was analyzed using descriptive statistics and the X2 method based on independent sample t-test.Results: Additional fluid had a significant effect on malodorous urine dysuria. However, it had an inverse effect on the treatment of fever and urinary frequency as it made them last longer. There was no difference in other parameters like abdominal pain and urine culture in 3 stages.Conclusions: Based on our study, the intake of excessive amounts of water has no significant effects on the results of the UTI treatment. However, due to lack of adequate evidence, further studies should be conducted in this field.Keywords: Urinary Tract Infection; Child; Fluid Therapy