Drag force and jet propulsion investigation of a swimming squid

Gökçen, Gökhan (Dogus Author)In this study, CAD model of a squid was obtained by taking computer tomography images of a real squid. The model later placed into a computational domain to calculate drag force and performance of jet propulsion. The drag study was performed on the CAD model so that drag force subjected to real squid was revealed at squid's different swimming speeds and comparison has been made with other underwater creatures (e.g., a dolphin, sea lion and penguin). The drag coefficient (referenced to total wetted surface area) of squid is 0.0042 at Reynolds number 1.6x106 that is a %4.5 difference from Gentoo penguin. Besides, jet flow of squid was simulated to observe the flow region generated in the 2D domain utilizing dynamic mesh method to mimic the movement of squid's mantle cavity

Investigating the Roles of Wise Management in Hospitals

Considering the importance of wisdom in medical centers, this study aims to explain the main roles (managers, doctors, nurses, and patients) in hospitals based on the basics of wisdom. This research reviewed articles in Google Scholar, SID, Magiran, Scopus, and PubMed databases from 2000 to 2021. Searched Persian keywords included wisdom, foundation wisdom, management, hospital, nurse, patient, and their English equivalent in MeSH. The findings showed that wisdom refers to human and social dimensions such as creativity, emotions, and spirituality. In service organizations such as hospitals, these dimensions have double importance because the output of the health service delivery system prioritizes the preservation of human life, but it does not consider illness a catastrophe that requires adaptation and care but an event in a person's life that a person and the service delivery system will face wisely, resulting in improvement and excellence in spirit of patient and staff. In these organizations, the managers’ management style and how health workers deal with patients play a fundamental role in improving patients' health. Also, the feeling of security and peace induced by the organization management style can make employees satisfied with their work and help them do it with enthusiasm.  It seems that organizations with wise management and ways to transfer and facilitate wisdom can help solve the basic problems of organizations in this field

Effect of aqueous and ethanolic extract of Eucalyptus camaldulensis L.

Herbs have been used for its medicinal properties from several thousand years ago. Herbs, essences and extracts, possess a variety level of biological activities and antimicrobial activities of a large number of them have been proved. Eucalyptus is one of these plants which the anti-virus effects of its extract has long been used to treat influenza and colds in most parts of the world. The aim of this study is evaluating antimicrobial effects of aqueous and alcoholic Eucalyptus camaldulensis leaves against some of the important food pathogens. Antimicrobial effects of extracts were evaluated on Staphylococcus aureus PTCC 2592, Escherichia coli PTCC1330 and Penicillium digitatum by “using the method of Collins” and “disk agar diffusion method”. The results showed that aqueous and ethanolic extract were quite effective in 2000 μg/ml concentration on Staphylococcus aureus and Penicillium digitatum, while both extracts have no certain antimicrobial effect on Escherichia coli. In “disk agar diffusion method” 20, 40, 60 and 80 mg/ml aqueous and ethanolic extract concentrations, was inhibition effect on Staphylococcus aureus and Penicillium digitatum, and 60 and 80 mg/ml aqueous and ethanolic extract concentrations, has deterrent effect on Escherichia coli, but at 20 and 40 mg/ml concentrations, no inhibitory effect on Escherichia coli was observed. Minimum Inhibitory Cconcentration (MIC) of ethanolic extract of Eucalyptus camaldulensis leaves and Minimal Bactericidal Concentration (MBC) for bacteria and Minimum Fungicidal Concentration (MFC) for fungi were performed. The results indicate that ethanolic and aqueous extracts of Eucalyptus camaldulensis leaves have the greatest effect on gram-positive bacteria Staphylococcus aureus. Escherichia coli were resistant to most of the aqueous and ethanolic Eucalyptus camaldulensis extracts. In conclusion, using Eucalyptus as a natural antimicrobial compounds in vitro have considerable antimicrobial ability over the studied strains.

Length-weight relationships of Garra rufa, in the Tigris and Persian Gulf basins of Iran

Garra rufa, a bottom dwelling freshwater fish and native to the Middle East, is distributed in the southwestern of Iran and the Tigris basin. Considering the importance of length-weight relationships data of a species in different habitats, the length-weight relationship of G. rufa from 13 rivers in the Persian Gulf and the Tigris basins was explored. The value of exponent b ranged from 2.74 to 3.19 with average of 2.99 in the Tigris basin and 2.96 in the Persian Gulf basin which was in normal range (2.5-3.5). As the length-weight parameters were concluded for each location separately, this information would be useful for further population dynamics researches

Moyamoya Syndrome Associated with Henoch-Schönlein Purpura

How to Cite This Article: Shiari R, Tabatabaei Nodushan SMH, Mohebbi MM, Karimzadeh P, Javadzadeh M. Moyamoya Syndrome Associated with Henoch-Schönlein Purpura. Iran J Child Neurol. Autumn 2016; 10(4):71-74.AbstractSome reports have shown the association between Moyamoya syndrome andautoimmune diseases. Herewith, we present a 3.5 yr old girl with Henoch-Schönleinpurpura (HSP) who was treated with steroids because of severcolicky abdominal pain. However, central nervous system manifestations suchas headache, ataxia and vision impairment developed during 6 months of heroutpatient follow-up. More evaluation using MRA revealed intracranial stenosisof internal carotid artery and arterial collaterals that were in favor of Moyamoyasyndrome. To our knowledge, this is the first report of Moyamoya syndromefollowing henoch-schönleinpurpura.References1. Aicardi J. Diseases of the nervous system in childhood, 2nd ed. London: Mac Keith Press, 1998. pp. 554–556.2. Currie S, Raghavan A, Batty R, Connolly DJ, Griffiths PD. Childhood moyamoya disease and moyamoya syndrome: a pictorial review. Pediatr Neurol 2011; 44:401–13.3. Suzuki J, Takaku A. Cerebrovascular, “moyamoya” disease. Disease showing abnormal net-like vessels in  base of brain. Arch Neurol 1969; 20:288–99.4. Smith ER, Scott RM. Spontaneous occlusion of the circle of Willis in children: pediatric moyamoya summary with proposed evidence-based practice guidelines. A review. J Neurosurg Pediatr. 2012 Apr;9(4):353-60.5. Ozen S, Ruperto N, Dillon MJ, Bagga A, Barron K, Davin JC, et al. EULAR/PReS endorsed consensus criteria for the classification of childhood vasculitides. Ann Rheum Dis. 2006; 65(7): 936-941.6. Gardner-Medwin JM, Dolezolova P, Cummins C, Southwood TR. Incidence of Henoch-Schonleinpurpura, Kawasaki disease, and rare vasculitides in children of different ethnic origins. Lancet. 2002; 360: 1197-1202.7. Aalberse J, Dolman K, Ramnath G, Periera RR, Davin JC. Henoch-Schönleinpurpura in children: an epidemiological study among Dutch paediatricians on incidence and diagnostic criteria. Ann Rheum Dis. 2007; 66(12): 1648-1650.8. Saulsbury FT. Henoch-Schönleinpurpura in children. Report of 100 patients and review of the literature. Medicine (Baltimore). 1999; 78(6): 395-409.9. Tarvin SE, Ballinger S. Henoch-Schonleinpurpura. Current Paediatrics. 2006; 16: 259-263.10. Cahide Y, Hu¨seyin, Şükrü Arslan C et al. Bilateral brachial plexopathy complicating henoch-schönleinpurpura. Brain & Development 28 (2006) 326–328.11. Bellman AL, Leicher CR, Moshe SL, Mezey AP. Neurologic manifestations of henoch–schönleinpurpura: Report of three cases and review of the literature. Pediatrics 1985; 75:687-92.12. Reza Shiari. Neurologic Manifestations of Childhood Rheumatic Diseases. Iran J Child Neurol 2012; 6(4): 1-7.13. Lee YJ, Yeon GM, Nam SO, Kim SY. Moyamoya syndrome occurred in a girl with an inactive systemic lupus erythematosus. Korean J Pediatr 2013; 56(12): 545–549.14. Seol HJ, Wang KC, Kim SK, Hwang YS, Kim KJ, Cho BK. Headache in pediatric moyamoya disease: review of 204 consecutive cases. J Neurosurg 2005; 103: Suppl: 439-42.15. Suzuki J, Kodama N. Moyamoyadisease — a review. Stroke 1983; 14:104-9.16. Baba T, Houkin K, Kuroda S. Novel epidemiological features of moyamoya disease. J Neurol Neurosurg Psychiatry 2008; 79:900-4.17. Tanghetti B, Capra R, Giunta F, Marini G, Orlandini A. Moyamoya syndrome in only one of two identical twins: case report. J Neurosurg 1983; 59:1092-4.18. Guey S, Tournier-Lasserve E, Kossorotoff M. Moyamoya disease and syndromes: from genetics to clinical management. Appl Clin Genet 2015; 8: 49–68.19. Scott RM, Smith JL, Robertson RL, Madsen JR, Soriano SG, Rockoff MA. Long-term outcome in children with moyamoya syndrome after cranial revascularization by pialsynangiosis. J Neurosurg 2004; 100: Suppl: 142-9.20. Lubman DI, Pantelis C, Desmond P, Proffitt TM, Velakoulis D. Moyamoya disease in a patient with schizophrenia. J Int Neuropsychol Soc 2003; 9:806-10.21. Smith ER, Scott RM. Moyamoya Disease and Moyamoya Syndrome. N Engl J Med 2009; 360:1226-37.22. Research Committee on the Pathology and Treatment of Spontaneous Occlusion of the Circle of Willis. Guidelines for diagnosis and treatment of moyamoya disease Neurol Med Chir (Tokyo) 2012; 52(5):245–266.23. Fung LW, Thompson D, Ganesan V. Revascularisation surgery for paediatricmoyamoya: a review of the literature. Childs Nerv Syst 2005; 21(5):358–364

Antimicrobial effect of Carboxy Methyl Cellulose (CMC) containing aqueous and ethanolic Eucalyptus camaldulensis L. leaves extract against Streptococcus pyogenes, Pseudomonas aeruginosa and Staphylococcus epidermidis

Oil from the eucalyptus tree (Eucalyptus camaldulensis L.) is used today in many over the counter cough and cold products, to relieve congestion. Eucalyptus oil is also used in creams and ointments to relieve muscle and joint pain, and in some mouthwashes. In this study Eucalyptus camaldulensis leaves extracted with water and ethanol 96°and the antimicrobial effects of extracts were evaluated by “using the method of Collins” and “disk agar diffusion method”. Antimicrobial properties of Carboxy Methyl Cellulose (CMC) films containing 20, 40, 60, and 80 mg/ml concentration of the extract studied against on Streptococcus pyogenes PTCC 1447, Pseudomonas aeruginosa PTCC 1310 and Staphylococcus epidermidis PTCC 1435. The results showed that aqueous and alcoholic extract were quite effective in 2000 μg/ml concentration on Streptococcus pyogenes and Staphylococcus epidermidis and have inhibition effect, while both extracts have no certain antimicrobial effect on Pseudomonas aeruginosa. Minimum Inhibitory Concentration (MIC) of ethanolic extract of Eucalyptus camaldulensis leaves were performed for each microorganism. Minimal Bactericidal Concentration (MBC) for bacteria was performed using the dilution method. The edible films containing mangrove extract presented more effective impact on the growth of Streptococcus pyogenes than Pseudomonas aeruginosa (p<0.05). The result indicates extracts of Eucalyptus camaldulensis leaves have the greatest effect on gram-positive bacterium Streptococcus pyogenes. As a result, aqueous and ethanloic extracts of Eucalyptus camaldulensis leaves, have been strong antimicrobial activity against many food pathogen bacteri

A Comparative Evaluation of the Clinical Course, Laboratory Data and Chest CT scan Findings in Pediatric Patients with Covid-19 and Their Prognostic Value in Disease Outcome Estimation

Background: Most research on children and adolescents with COVID-19, had limited sample sizes and little clinical, laboratory, and radiological findings. The purpose of this research was to examine the features of children and adolescents with COVID-19 infection.Methods: This analytical retrospective study was conducted on children (1 to 12 years old) and adolescents (13 to 19 years old) with COVID-19 in Shahid Beheshti Hospital, Kashan, Iran. The data were then collected, entered into SPSS and analyzed.Results: In the adolescent group, the frequency of dyspnea (47.1 % vs. 11.9%), cough (67.1 % vs. 39.2%), lethargy (42.9 % vs. 25.9%), headache (35.7 % vs. 10.5%), myalgia (38.6 % vs. 14%), and chest pain (12.9 % vs. 0.7%) were significantly higher than those in children (p<0.05). Furthermore, in terms of laboratory findings, the normal range of neutrophils (13.8% vs. 1.4%), Cr (95% vs. 75.7%), and CRP (77.9% vs. 58%) were higher in children. Moreover, we found that the CT severity score among adolescent patients was significantly higher than that in children (4.84 ± 5.21 vs. 1.76 ± 3.25, p=0.006). Also, the frequency of consolidation (61.3 % vs. 19%), and ground-glass opacity (58.1 % vs. 28.6%) among adolescents were significantly higher compared to child cases (p<0.05) while only the frequency of mosaic pattern of pulmonary parenchymal attenuation was significantly higher among children (p=0.035).Conclusion: This research found milder clinical, biochemical, and radiological symptoms in children with COVID-19 than adolescents. However, radiological examinations showed greater rates of pulmonary parenchymal mosaic attenuation, which might help early diagnosis of COVID-19

Research Article Novel Security Conscious Evaluation Criteria for Web Service Composition

Abstract: This study aims to present a new mathematical based evaluation method for service composition with respects to security aspects. Web service composition as complex problem solver in service computing has become one of the recent challenging issues in today&apos;s web environment. It makes a new added value service through combination of available basic services to address the problem requirements. Despite the importance of service composition in service computing, security issues have not been addressed in this area. Considering the dazzling growth of number of service based transactions, making a secure composite service from candidate services with different security concerns is a demanding task. To deal with this challenge, different techniques have been employed which have direct impacts on secure service composition efficiency. Nonetheless, little work has been dedicated to deeply investigate those impacts on service composition outperformance. Therefore, the focus of this study is to evaluate the existing approaches based on their applied techniques and QoS aspects. A mathematicalbased security-aware evaluation framework is proposed wherein Analytic Hierarchy Process (AHP), a multiple criteria decision making technique, is adopted. The proposed framework is tested on state-of-the-art approaches and the statistical analysis of the results presents the efficiency and correctness of the proposed work