22 research outputs found
The effect of flows on transverse oscillations of coronal loops
In this paper we study kink oscillations of coronal loops in the presence of flows. Using the thin-tube approximation we derive the general governing equation for kink oscillations of a loop with the density varying along the loop in the presence of flows. This equation remains valid even when the density and flow are time dependent. The derived equation is then used to study the effect of flows on eigenfrequencies of kink oscillations of coronal loops. The implication of the obtained results on coronal seismology is discussed
Imagination, Hope and the Migrant Journey : Iraqi Asylum Seekers Looking for a Future in Europe
Europe received an unprecedented number of asylum seekers in 2015. This article examines Iraqi asylum seekers who journeyed through Europe in search of an idealized version of Finland, which they had imagined based on word-of-mouth and social media information. Through cognitive migration, the act of pre-experiencing futures in different locations, Finland was seen to offer both subjective hope of personal growth and advancement and objective hope of safety and physical security. This hope motivated them to embark on a journey of 6,000 kilometers to the European North. Based on interview data and relevant studies, the article concludes that hope of a better, imagined future abroad acts as a powerful magnet for persons with poor prospects in their countries of origin. Hope is a kind of critical emotion strongly shaped by beliefs and real-time opportunities; and as such, beliefs are notoriously difficult to change. Imagination, therefore, should not be overlooked when planning and implementing migration policies.Europe received an unprecedented number of asylum seekers in 2015. This article examines Iraqi asylum seekers who journeyed through Europe in search of an idealized version of Finland, which they had imagined based on word-of-mouth and social media information. Through cognitive migration, the act of pre-experiencing futures in different locations, Finland was seen to offer both subjective hope of personal growth and advancement and objective hope of safety and physical security. This hope motivated them to embark on a journey of 6,000 kilometers to the European North. Based on interview data and relevant studies, the article concludes that hope of a better, imagined future abroad acts as a powerful magnet for persons with poor prospects in their countries of origin. Hope is a kind of critical emotion strongly shaped by beliefs and real-time opportunities; and as such, beliefs are notoriously difficult to change. Imagination, therefore, should not be overlooked when planning and implementing migration policies.Peer reviewe
Factors Associated with Revision Surgery after Internal Fixation of Hip Fractures
Background: Femoral neck fractures are associated with high rates of revision surgery after management with internal fixation. Using data from the Fixation using Alternative Implants for the Treatment of Hip fractures (FAITH) trial evaluating methods of internal fixation in patients with femoral neck fractures, we investigated associations between baseline and surgical factors and the need for revision surgery to promote healing, relieve pain, treat infection or improve function over 24 months postsurgery. Additionally, we investigated factors associated with (1) hardware removal and (2) implant exchange from cancellous screws (CS) or sliding hip screw (SHS) to total hip arthroplasty, hemiarthroplasty, or another internal fixation device. Methods: We identified 15 potential factors a priori that may be associated with revision surgery, 7 with hardware removal, and 14 with implant exchange. We used multivariable Cox proportional hazards analyses in our investigation. Results: Factors associated with increased risk of revision surgery included: female sex, [hazard ratio (HR) 1.79, 95% confidence interval (CI) 1.25-2.50; P = 0.001], higher body mass index (fo
Intergovernmental relations and return. Part 3: Beyond return frameworks:An exploration of Dutch and Norwegian intergovernmental strategies to implement enforced return to Afghanistan, Iran, and Iraq
Intergovernmental relations and return. Part 3: Beyond return frameworks: An exploration of Dutch and Norwegian intergovernmental strategies to implement enforced return to Afghanistan, Iran, and Iraq
Imagination, Hope and the Migrant Journey: Iraqi Asylum Seekers Looking for a Future in Europe
Experimental pancreas transplantation: the consequences of the portocaval shunt on the blood glucose, plasma insulin, and glucagon Transplante experimental de pĂąncreas: as consequĂȘncias da derivação portocava na glicemia sanguĂnea, na insulina plĂĄsmica e no glucagon
The consequences of the bypass of the portal venous effluent into the systemic circulation on the blood glucose, plasma insulin, and glucagon in immediate postoperative period of rats submitted to pancreas transplantation were studied. Forty outbred male Wistar rats were randomly assigned to two experimental groups: group NC included 20 non-diabetic control rats, submitted to simulated operating (sham-operated), and group PT included 20 diabetic rats that received heterotopic pancreas transplantation from normal donor Wistar rats. For 7 days prior and 1, 3, 6, 12, 24, 48, 72 and 96 hours after transplantation blood glucose, plasma insulin, and glucagon were recorded. These parameters were also concurrently recorded for NC rats. Diabetes was induced by i.v. alloxan administration; PT rats were immunosuppressed with cyclosporin A. NC rats presented normal values of blood glucose, plasma insulin, and glucagon over the course of experiment. A marked hyperinsulinemia was found in peripheral venous blood of PT rats, being plasma insulin significantly higher than that for NC rats (P<0.01) beginning 72- h after transplant. The plasma glucagon, elevated in pre-transplant period, did not change after transplant. Despite hyperinsulinemia and hyperglucagonemia, the blood glucose levels were elevated up to 6- h after transplant, but were within normal levels following this period. Beginning at 12- h after transplant the blood glucose levels observed in PT rats did not differ significantly to NC rats until the sacrifice.<br>A proposição foi realizada, no perĂodo pĂłs-operatĂłrio imediato, em 40 ratos Wistar, distribuĂdos por sorteio em doi grupos: grupo NC, vinte ratos correspondentes ao grupo controle, nĂŁo diabĂ©tico, submetidos a operação simulada e o grupo PT, 20 ratos correspondentes ao grupo diabĂ©tico que recebeu transplante de pĂąncreas heterotĂłpico de ratos Wistar normais. Durante sete dias, antes do transplante, e 1, 3, 6, 12, 24, 48, 72, 96 horas apĂłs, determinava-se a glicose sanguĂnea, a insulina plasnĂĄtica e o glucagon. Estes parĂąmetros eram obtidos tambĂ©m do grupo NC. Diabetes mellitus experimental era induzida pela administração intravenosa de aloxana. O grupo PT era imunosuprimido com ciclosporina A. O grupo NC apresentou nĂveis normais de glicose sanguĂnea, de insulina plĂĄsmica e de glucagon, durante todo o experimento. Foi encontrada nĂtida hiperinsulinemia no sangue venoso perifĂ©rico do grupo PT. A insulina plasmĂĄtica era significantemente maior no grupo PT comparada ao grupo NC começando 72 horas apĂłs o transplante. O glucagon plasmĂĄtico, elevado no perĂodo prĂ©-transplante, nĂŁo se alterou apĂłs o transplante. Apesar de hiperinsulinemia e hiperglucagonemia, os nĂveis de glicose sanguĂnea eram elevados 6 horas apĂłs o transplante e mantiveram-se normais apĂłs este perĂodo. Considerando-se os nĂveis de glicose sanguĂnea 12 horas pĂłs-transplante, nĂŁo houve diferença estatisticamente significante entre os grupos PT e NC, atĂ© o sacrifĂcio