bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of ultrasonic welding parameters for solar collector applications
Authors: Yeniyil Emre , Boga Cem , Esme Ugur 
Published: March 2019

Abstract
Today, ultrasonic welding is used in many different areas due to ease of application compared to other welding methods. Computer, electric, automotive and aerospace industries are the leading areas for these applications. With its ability to easily join materials like Al, Cu, Ni, ultrasonic welding has become a preferred method for use in the welding of solar collectors which are components in solar energy systems. The system parameters for welding solar collectors must of course be adjusted according to the properties of the materials used so that the heat transfer between specimens is not affected. In this study, the selective coated plate and the heat carrier pipes of solar collectors were welded using ultrasonic seam welding, and the optimum welding parameters were determined according to the Cu-DHP copper alloy used. For this purpose, copper specimens were welded using welding speeds of 4, 8, 12 and 16 m × min−1 and amplitudes of 4, 5 and 6 μm, while pressure and frequency values were fixed. The shear strength values of these welded specimens were calculated, and images of the weld areas were obtained with the help of a scanning electron microscope. Through hardness measurements made on the interfacial region of the welds, it was concluded that optimal welding performance was obtained at an amplitude of 4 μm and a welding speed of 12 m × min−1. At these parameters, a mean shear strength value of 0.1386 MPa and a mean hardness value of 112 HV were measured.
Influence of in-situ Al2O3 content on mechanical properties of Al2O3 reinforced Fe–Cr–Ni alloys
Authors: Chen Chang , Shi Sitao , Guo Zheng , Li Guoxin , Wu Yonghua , Su Mingzhou , Wang Huimeng 
Published: March 2019

AbstractIn-situ Al2O3 (14.8–31.3 wt.%) reinforced Fe–Cr–Ni alloys were prepared using reactive hot pressing at a temperature of 700°C and pressure of 30 MPa for 2 h. X-ray diffraction showed that the obtained metal matrix composites (MMCs) mainly comprised Al2O3, Fe–Cr and Cr0.7Fe0.36Ni2.9 phases. Vickers hardness values of the composites with varying Al2O3 contents were all around 4.28 GPa. Scanning electron microscopy images showed that the Al2O3 particles in the MMCs (with Al2O3 content of 14.8 wt.%) were ultrafine and uniformly distributed. Moreover, the metal matrix composite with 14.8 wt.% Al2O3 exhibited the highest values of fracture toughness and bending strength, which were 15.2 MPa · m1/2 and 529 MPa, respectively.
Effect of thermomechanical treatment on the microstructures and mechanical properties of an ultrafine grained steel using bainite starting microstructure
Authors: Gostariani Reza , Kermanpur Ahmad , Najafizadeh Abbas 
Published: March 2019

AbstractThe cold rolling and subsequent annealing of microstructures with a high percentage of bainite is one of the promising thermomechanical treatments for grain refinement in low-alloy steels. In this research, the bainite microstructure was formed in the steel DIN 1.5715 by austenitizing at 1143 K followed by quenching in a salt-bath at 688 K. The specimens were then cold rolled to 90 % reduction in thickness followed by annealing at 773–923 K for different times. An ultrafine grained ferrite microstructure was developed possessing the best strength–ductility balance after 90 % cold rolling followed by annealing at 923 K for 2 400 s.
Effect of pre-rafting on creep properties of Ni-based single crystal superalloy
Authors: Gan Wenyan , Wen Zhixun , Pei Haiqing , Zhang Yamin , Gao Hangshan 
Published: March 2019

AbstractUniaxial tension creep tests were carried out along the [001] direction for as-heat treated Ni-based single crystal superalloy with cubic γ′ phase and pre-rafting samples with N-type rafted γ′ phase at 980 °C and 300 MPa. By comparing the differences in the creep curves between the as-received and pre-rafting samples, the influence of pre-rafting on creep properties was studied. It was demonstrated that the sample with the cubic γ′ phase exhibited a lower creep rate and a longer rupture life compared to the rafted γ′ phase. This paper discusses the evolution of the microstructure, especially the matrix channel width. The influence of rafting on creep deformation was incorporated into the modified crystal plasticity model via the dependence of the Orowan stress on the matrix channel width. Finite element calculation was performed to predict the creep behavior, which agreed well with the experimental data.
Analysis of two AL-amyloidosis cases reporters (own observations)
Authors: Shekhovtseva T. G. , Dolinna M. A. 
Published: March 2019

Abstract. According to current presentations, primary AL-amyloidosis (AL-A) and multiple myeloma, associated and not associated with AL-A, are considered as a part of uniform β-lymphocytic dislocation that is characterized by proliferation of abnormal clone of plasma or β-cells in the bone marrow with excess production of monoclonal immunoglobulins.
Objective: to describe our own observations of patients with AL-A, which is an example of complexity of the disease diagnostics, due to the polymorphism of clinical picture and need for immunological verification.
It was presented 2 cases of late AL-A diagnostics. Amyloid depositing in different organs determined the diversity of clinical manifestations. AL-A had a consistently progressive character with the gradual involvement of various organs and systems. Results: case 1 demonstrated AL-A with damage of kidneys, heart, liver, spleen, lungs, pleura and subsequent development of ischemic stroke. In the second case AL-amyloidosis with damage of heart, kidneys, lungs, tongue and skin was diagnosed. The severity of the patient's condition was due to severe nephrotic syndrome. AL-A is a serious disease that leads to a lethal end if treatment is not timely. Our observations demonstrate the complexity of AL-A diagnostics, which requires the collaboration of doctors of various profiles.
Modern morphological diagnostics of amyloidosis involves not only detection but also mandatory amyloid typing, which determines further therapeutic tactics. Diagnostics of AL-A diagnosis should be based on the morphological study results. The final diagnosis of amyloidosis is established after congolic masses detecting. Biopsy of the affected organ is the most effective diagnostic method. When there is a nephrotic syndrome, kidney biopsy is most appropriate, because amyloid will be detected in 80% of AL-A. The most effective method for AL-A typing is an immunohistological study using the immunoglobulin light chains antisera.
A Time-Lag Study of the Effect of Organisational Capital on Innovation in Australia SMEs
Authors: Khan Yasmin Kamall 
Published: March 2019

This study explores the strategic links between organisational capital and innovation performance in Australian SMEs. This study classified organisational capital as information technology as per hardware and software; and equipment or machinery that was applied in the firm. A sample involving SME from various industries was adapted from the Business Longitudinal Database (BLD) from the Australian Bureau of Statistics (ABS). The analyses validate that information technology capabilities is essential for achieving innovation performance. However the relationship decline over time for different type of innovation. Thus, SME managers should be carefully in investing in appropriate information technology in order to facilitate innovation in their firm.
Key Words: SMEs, Organisational capital, Innovation, Australia
OYUNCULUK EĞİTİMİNDE ZEYBEK DANSLARI KAYNAKLI BEDEN FARKINDALIĞI YARATMA YÖNTEMİ ÖNERİSİ
Authors: ERKAN Sema 
Published: March 2019

Tiyatro ve dans, sahne sanatı olarak iç içe etkileşimli bir gelişim ve değişim süreci
geçirmiş, iki sanat dalının da temel amacı seyirci ile iletişim kurmak olmuştur. Bu
iletişimin gerçekleşmesini sağlayan en güçlü anlatım aracı da sanatçının bedenidir.
Duygu ve düşüncelerin sanatsal ifadeye dönüşmesine olanak sağlayan sanatçı
bedeninin, bilinçli kullanımı ancak eğitimle mümkündür. Sahne üzerinde günlük
yaşamdan farklı bir anlatım diline sahip olan bedenin, anlatım sınırlarını
geliştirebilmek için her iki sanat dalının da farklı çalışma alanlarından yararlanması
gerekmektedir. Oyunculuk eğitiminde beden dili ve dans tekniklerinin
kullanılmasının gerekli olduğu önermesiyle hareket eden bu çalışma, oyuncuların
bedensel anlatım olanaklarını geliştirmesine yardımcı olacak, beden farkındalığı
yaratarak, hareketin kültürel kodlarının beden yoluyla aktarımını sağlayacak, zeybek
dansları kaynaklı bir yöntem önerisi sunmayı hedeflemektedir. Yöntem önerisi,
bedene ve harekete dayalı oyunculuk yöntemlerinin çıkış noktasını merkez alarak,
hareketin barındırdığı özelliklerin vücuda aktarımı sürecine odaklanmaktadır. Her
geçen gün yeni ve farklı anlatım arayışı içinde olan oyuncular için önerilen bu
yöntem, zeybek türündeki dansların yapısal analizi ve egzersiz aşamalarını
kapsayan bir uygulama önerisi sunmaktadır.&nbsp;
PENDUKUNG KEPUTUSAN DALAM PENENTUAN PRODUK TERBAIK PADA PT ASURANSI JIWA GENERALI
Authors: Hardiyan Hardiyan , Hazizah Rosiana Nur 
Published: March 2019

Pengembangan bisnis asuransi di saat yang berkembang pesat, dimana ini bisa membuat bingung dalam menentukan produk terbaik yang sesuai keinginan dan kebutuhan mereka. Asuransi jiwa adalah bisnis jasa yang memberikan jaminan kepada pelanggan ketika mereka mengalami peristiwa yang beresiko hilang produktivitasnya menjadi keuangan. Namun, sebagaian besar pelanggan benar-benar menyesal telah nasabah asuransi menjadi karena kurangnya pemahaman mereka untuk asuransi itu sendiri. Adapun model metode yang akan digunakan adalah metode Simple Additive Weighting (SAW). Metode ini merupakan metode dengan cara mencari penjumlahan terbobot dari rating kinerja pada setiap alternatif dan pada setiap atribut. Metode Simple Additive Weighting (SAW) dapat membantu dalam pengambilan keputusan suatu kasus, akan tetapi perhitungan dengan menggunakan metode ini hanya yang menghasilkan nilai terbesar yang akan terpilih sebagai alternatif yang terbaik.
Estudio para la implementación del manual de control interno caso (Gobierno Municipal del Cantón Puerto Quito, Provincia de Pichincha)
Authors: Egas Moreno Fanny Graciela , Cifuentes Luz Marina , Toala Preciado Domitilo , Vergara Cuadros Yadira Natalia 
Published: March 2019

El presente trabajo se basa en el estudio para la implementación de un manual de control interno para la sección de contabilidad del Gobierno cantonal de Puerto Quito, Cantón Puerto Quito, Provincia de Pichincha, en el periodo de enero a junio del 2018”. Y que plantea como problema, ¿Cuál será la incidencia del estudio para la implementación de un manual de control interno para sección de contabilidad para disminuir riesgos en la ejecución de actividades encaminadas al cumplimiento de los objetivos y en que los ingresos y gastos aplicables a las operaciones del municipio, sean registradas e informadas adecuadamente, con el propósito de preparar estados e informes financieros confiables? cuyo objetivo general es dotar a la administración de un instrumento que describa y unifique los procedimientos y criterios mínimos que faciliten la evaluación del sistema de control interno por parte de las unidades de control interno, con el fin de fomentar su fortalecimiento, proporcionando información retro alimentadora para toma de decisiones en proceso de gestión de la municipalidad, contribuyendo así, a mejorar la eficiencia y efectividad, lo que redundara en beneficios de los intereses del Gobierno Cantonal de Puerto Quito y de las Sección de Contabilidad.
Evaluation of safety of caesarean myomectomy: A prospective study
Authors: Nargis Nazlima , Karim Md Iqbal , Loverine Salma 
Published: March 2019

Background: Uterine myomas are the most common benign tumour of female reproductive tract and the prevalence of myomas in pregnancy has been reported to be 2%to 5% . Myomectomy during cesarean section has traditionally been discouraged due to risk of intractable haemorrhage and fear of hysterectomy. But recently large scaled studies indicated that cesarean myomectomy could be safely performed in majority of cases without any serious or life threatening complications.
Materials and Methods: This prospective study was done at Ibn Sina Medical College Hospital, Dhaka, Bangladesh between January 2016 and December 2016. Fifty patients were recruited into the study, 25 patients had undergone myomectomy during cesarean section and 25 patients had undergone only cesarean section.
Results: Average value of haemoglobin both pre and post-operatively was 12.31±1.22 g/dl and 10.64±1.51 g/dl for patients who had cesarean section with myomectomy and 11.61±1.3 g/dl and 10.3±1.7 g/dl in the other group in which cesarean section without myomectomy was performed. The difference in average haemoglobin for patients who had a cesarean section and myomectomy was 1.41 while those who had caesarean section alone was 1.32±1.12. This was not significant. The average duration of operation was longer in patient who had cesarean section and myomectomy (54.32±18.06 mins) than those who had caesarean section alone (38.54±8.42mins). The incidence of hemorrhage was5.45±1.23% and 5.23±1.03% respectively and the mean length of postoperative hospitalization was2.42±1.45and 2.17±0.70 days and no hysterectomy was needed in any group. Blood transfusion was given in 6 patients with 3 patients in each group. Sixty eight percent of the fibroids were subserous and in the body of the uterus.
Conclusion: Cesarean myomectomy is a safe and effective procedure and does not increase the incidence of intraoperative and postoperative complications.
Bangladesh Crit Care J March 2019; 7(1): 40-43
A case of Plasmodium Falciparum Malaria with initial presentation of diarrhea leading to multi organ failure
Authors: Shamarukh Karishma , Rahaman Mir Atiqur , Faruq Ridwan Naim , Faruq Mohammad Omar 
Published: March 2019

Malaria is a major health concern in tropical countries. The disease has various modes of presentation involving different organs in the body. Gastrointestinal manifestation is a common mode of presentation, but diarrhea as the initial symptom is rare. The incubation period of Plasmodium falciparum is 9 to 14 days. Due to differences in the presenting symptoms, prompt diagnosis and treatment is most often delayed. Here, we are reporting a 64 years old Dutch male with history of travel to Ghana 45 days back, followed by Netherlands, Myanmar before coming to Rajshahi, Bangladesh, a non-endemic zone of malaria. He was admitted to a peripheral hospital there with history of diarrhea for 2 days and an episode of loss of consciousness. After admission, he developed fever with chills. On the next day his consciousness level deteriorated. The initial PBF revealed no parasite while a second PBF revealed plasmodium falciparum. The patient was transferred to our hospital with endotracheal tube for further management. He later developed AKI, DIC with septic shock, and atrial fibrillation during his stay in our hospital. He was treated with both parenteral and orally administered antimalarial medications.
Bangladesh Crit Care J March 2019; 7(1): 48-50
Persistent abdominal pain of a middle aged old female– Think of Amoebic Colitis
Authors: Niger Chowdhury Rifat , Zaman Chowdhury Akram Uz , Chowdhury Raj , Hossain Tamzeed , Mahbub Tania , Khanam Rawshan Arra 
Published: March 2019

Amebic colitis, also known as amebiasis, is a gastrointestinal disorder caused by invasion of the intestine by the protozoan parasite, Entamoeba histolytica. Although primarily a disease found in underdeveloped countries, this condition may exist in patients who have recently travelled these area. Obtaining an accurate history and testing are crucial for correctly diagnosing and treating amebic colitis. Here we are reporting a case of Amoebic Colitis who has presented with severe abdominal pain and diarrhoea.
Bangladesh Crit Care J March 2019; 7(1): 58-60
Anti-Inflammatory Effect of Ethanolic Extract of Carica Papaya Leaves and Indomethacin in Cotton Pellet Induced Granuloma in Animal Model
Authors: Sultana Afroza , Afroz Rumana , Yasmeen Onayza , Aktar Muqbula Tasrin , Yusuf Md Abdullah 
Published: March 2019

Background: Anti-inflammatory effect can be exerted by Carica papaya.
Objective: The purpose of the present study was to see the anti-inflammatory effect of ethanolic extract of Carica papaya leaves and indomethacin in carrageenan induced rat paw edema animal model.
Methodology: This was an animal study carried out in the Department of Pharmacology at Dhaka Medical College, Dhaka, Bangladesh during the period from July 2014 to June 2015 for a period of one (01) year. The leaves of Carica Papaya collected from Botanical garden, Mirpur, Dhaka, Bangladesh. The animals were divided into four groups. The animals were divided into four groups. In all the animals granuloma were induced by implantation of autoclaved cotton pellet on the 1st day and they treated as follows: Group I were served as control that was received normal saline. Group II were received ethanolic extract of Carica Papaya leaves. Group III were received ethanolic extract of Carica Papaya leaves. Group IV were received indomethacin. On the 15th day animals were anesthetized, implanted pellets were dissected out, dried at hit air oven and the final weights were measured.
Result: The experiment was carried out on 48 Long Evan Norwegian rats. Rats were divided in 4 groups of six animals each. The mean increase of weight of cotton pellet was 48.06±1.02, 24.48±0.36, 22.42±0.56 and 18.02±0.43 in group I, II, III and IV respectively. The inhibition of granuloma formation was 49.06%, 53.35% and 62.51% in group II, III and IV respectively.
Conclusion: In conclusion the ethanolic extract of Carica Papaya leaves has effects on cotton pellet induced granuloma formation in experimental rat.
Journal of Current and Advance Medical Research 2019;6(1):2-5
Technology Enhanced Learning in Undergraduate Pharmacology through Online Quizzes: A Pedagogical Approach and Medical Students’ Perspective
Authors: Sarker Sujit Kumar , Bhas Geethanjali , Marakala Vijaya , Yusuf Mohammad Abdullah 
Published: March 2019

Background: Technology enhanced learning in medical curriculum is expanding rapidly because of research showing the benefits for learners in terms of engagement, convenience, attainment and enjoyment.
Objectives: The purpose of the present study was to explore medical students’ perspective on technology enhanced learning in undergraduate pharmacology.
Methodology: This descriptive cross-sectional study was conducted in the Faculty of Medicine during 2016 for a period of three (3) months. Second year MBBS students who were studying in the International Medical School, Management & Science University,Selangor, Malaysia with the age group of equal or more than 18 years of age with both sexes were selected as study population. Several online quizzes were conducted by Quizizz. Data were analysed after online quizzes using semi-structured questionnaire.
Results: A total number of 42 students were involved in this study. Among these 35(83.33%) surveyed students were strongly agreed with timing for answering the questions however, 39(92.86%) strongly agreed that quizzes stimulate interest in pharmacology and 28(66.67%) strongly agreed that quizzes improve knowledge and skill in pharmacology. Most of the students suggested to continue online quizzes.
Conclusion:Systematic analysis and stratification of students’ perceptions regarding technology enhanced learning initiatives such as online quizzes are essential in gaining insight for educational planning and interventions in pharmacology.
Journal of Current and Advance Medical Research 2019;6(1):14-17
Comparison of Effect of Silymarin and Ethanol Extract of Trigonella foenum-graecum on Gentamicin Induced Nephrotoxicity in Rats
Authors: Hilmi Syeda Rubayat , Dewan Zesmin Fauzia , Kabir AKM Nurul , Islam Muhammad Moinul 
Published: March 2019

Background: A variety of drugs and chemicals possess nephrotoxic potentials; therefore it is of keen interest to the researchers to obtain ways and means for alleviation of nephrotoxicity.
Objective: The present study was designed to compare the ameliorative effect of silymarin with ethanol extract of Trigonella foenum-graecum in an experimental model of gentamicin- induced nephrotoxic rats.
Methodology: This animal study was conducted by giving distilled water intraperitoneally to control group for seven days (1ml/rat/day) and was sacrificed on 8th day. To induce nephrotoxicity, gentamicin (GM) was administered (80 mg/kg/day for 7 days) intraperitoneally and sacrificed on 15th day. The ethanol extract of T. foenum-graecum was administered (500 mg/kg/day for 14 days) orally concomitantly with GM (7 days) and sacrificed on 15th day. To another group of rats, silymarin was administered (500 mg/kg/day for 14 days) orally concomitantly with gentamicin (7 days) and sacrificed on the 15th day. Biochemical indices like serum creatinine and serum urea levels were estimated to determine nephrotoxicity and amelioration of nephrotoxicity in all rat groups. To determine the status of oxidative stress and lipid peroxidation, the renal cortical glutathione (GSH) and renal cortical malondialdehyde (MDA) levels were estimated.
Results: Statistically significant amelioration was observed in all the biochemical parameters in T. foenum-graecum and silymarin treated groups.
Conclusion: The ameliorating effect of T. foenum-graecum is much more effective in comparison to that of silymarin in nephrotoxicity.
Journal of Current and Advance Medical Research 2019;6(1):23-27
Self-Medication Practice among Medical Students of a Tertiary Teaching Hospital in Dhaka City
Authors: Khan Asma , Sultana Afroza , Ahammad Benzir , Nahar Shamsun , Khanam Shafeya 
Published: March 2019

Background: Self-medication is a common practice worldwide and the irrational use of drugs is a cause of concern.
Objective: This present study was designed to assess the rate of self-medication among the medical students in a tertiary teaching hospital in Dhaka.
Methodology: This descriptive cross-sectional study was conducted in the Department of Pharmacology at Shaheed Suhrawardy Medical College, Dhaka, Bangladesh from October to December 2017 for a period of three (03) months. The participants were briefed about the nature of the study; the consent was taken and a pre‐tested semi‐structured questionnaire was administered to them. The information pertaining to the pattern of self‐medication, indications for self‐medication and drugs used for self‐medication was included in the questionnaire.
Result: A total of 303 students were included in this study. The rate of self-medication was 100.0%. A larger number of females were self-medicating (81.2%) than males (75.3%). The majority of the students self-medicated because of the illness being too trivial for consultation (43.2%) and previous experience of illness (43.2%). Fever (73.3%) and headache (65%) are the most common cause of self-medication. Antipyretics were most commonly self–medicated by the participants (98%). 45.5% 0f students told that self-medication is not an acceptable practice. 40% of the participants opined that self-medication was a part of self-care.
Conclusion: In conclusion self-medication is widely practiced among students of the institute
Journal of Current and Advance Medical Research 2019;6(1):28-31