نتایج جستجو برای: effusion holes
تعداد نتایج: 57007 فیلتر نتایج به سال:
the effect of the presence of perforations on he stresses of a plate is a problem which is of great interest in structural design and in the mathemattical theory of elasticity. among the many hole patterns that are likely to require consideration is the ring of equally spaced circular holes. the present worke investigates stress & strain analysis of a thin isotropic circular plate containing a ...
background: pleurotomy during coronary artery bypass grafting (cabg) may cause post-operative events, mostly pulmonary complications. in this study, we evaluated the influence of pleurotomy during cabg on the clinical outcome following left internal mammary artery (lima) harvesting. methods: between march and august 2009, 102 patients who underwent cardiac surgery were enrolled in this study an...
background: regarding to the significant of the possibility of the malaria epidemic and nuisance of mosquitoes during the active season, the fauna and some ecological activities of mosquitoes in related to tree holes were investigated from april to december 2009 in neka county of mazandaran province, northern iran. methods: larval collection was carried out from natural, artificial breeding p...
Objectives: The present research aimed to evaluate the relationship of supra patella effusion with pain and disability in patients with knee osteoarthritis by Ultrasonography (US). Methods: In a cross-sectional study, 60 patients with knee OA (Mean±SD score of body mass index: 29.81±5.64 kg/m2 and age: 50.48±7.57 years) were selected by nonprobability sampling method. Supra patella effusion wa...
the causes and situation of exudative pleural effusion vary from one area to another. a cross-sectional study was conducted on 327 patients with exudative pleural effusion in south khorasan province (iran). the patients were older than 12 years and comprised 172 (52.6%) males and 155 (47.4%) females. the study commenced in 2007 with seven years duration. the light’s criteria were used to define...
background: otitis media with effusion (ome) is common in the children. it is proven that pathogenic bacteria as a causative agent of middle ear effusion, however the role of fungal infection in otitis media with effusion remains unclear. therefore, this study was conducted to assess presence of fungi in ome. methods: from january 2005 to september 2006, a number of 62 children with proven otit...
conclusion serum cyfra21-1 is useful as a measure in differentiating malignant from benign pleural effusion. results there was statistically significant difference between mean of serum cyfra21-1 levels of benign (3.9±7.6) and malignant(19.5± 30) pleural effusion (p=0.01). in addition the sensitivity, specificity, positive predictive value and negative predictive value of serum cyfra21-1 at the...
The high pressure turbine nozzle guide vane of a modern aeroengine experiences large heat loads and thus requires both highly effective internal external cooling. This can be accomplished with double-wall effusion cooling, which combines impingement, pin-fin combination three cooling mechanisms causes losses, increasing potential for the migration coolant towards low regions, subsequently starv...
Alliance Network, Information Technology, and Firm Innovation: Findings from Pharmaceutical Industry
This study draws on absorptive capacity theory and organizational learning perspective to examine and elaborate the roles of IT in influencing firm innovation in the alliance network context of pharmaceutical industry. We focused on three types of IT-enabled knowledge capabilities and one specific type of alliance network structure structural holes and examine whether and how they interact to j...
BACKGROUND AND OBJECTIVE: Video-assisted thoracoscopic surgery is preferred over conventional methods, such as pleural biopsy, in the diagnosis and treatment of patients with pleural effusion. Considering that Imam Khomeini Hospital is facing a large volume of patients with pleural effusion of unknown origin referred from other centers, the present study was conducted to investigate the role of...
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