7 research outputs found
Modeling elastic properties of polystyrene through coarse-grained molecular dynamics simulations
This paper presents an extended coarse-grained investigation of the elastic
properties of polystyrene. In particular, we employ the well-known MARTINI
force field and its modifications to perform extended molecular dynamics
simulations at the s timescale, which take slow relaxation processes of
polystyrene into account, such that the simulations permit analyzing the bulk
modulus, the shear modulus, and the Poisson ratio. We show that through the
iterative modification of MARTINI force field parameters it turns out to be
possible to affect the shear modulus and the bulk modulus of the system, making
them closer to those values reported in the experiment.Comment: 29 pages, 8 figure
Prosperujúca VŠ v podmienkach trhového hospodárstva
Import 20/04/2006Prezenční výpůjčkaVŠB - Technická univerzita Ostrava. Ekonomická fakulta. Institut (162) doktorských a manažerských studi
Correção endovascular de aneurisma de aorta abdominal e artéria ilíaca comum esquerda em paciente com hemofilia C grave Endovascular repair of abdominal aortic aneurysm and left common iliac artery in a patient with severe hemophilia C
A deficiência do fator XI, também conhecida como hemofilia C, é uma doença hematológica hereditária rara, que se manifesta clinicamente com hemorragia persistente após cirurgias, traumas, menorragias e extrações dentárias. Neste artigo, relatou-se a correção endovascular de um paciente com aneurisma de aorta e de artéria ilíaca comum esquerda em um paciente portador de deficiência major do fator XI (atividade do fator XI inferior a 20%). O procedimento foi realizado com sucesso, com o manuseio do distúrbio da coagulação por meio da infusão de plasma fresco no pré-operatório imediato e no pós-operatório, e controle laboratorial da coagulação do paciente.<br>Factor XI deficiency, also known as hemophilia C, is a rare hereditary blood disease that manifests with persistent bleeding after surgery, trauma, menorrhagia, and dental extractions. This article reports an endovascular repair of a patient diagnosed with an aortic and left common iliac aneurysm, with severe factor XI deficiency (factor XI activity below 20%). The procedure was successfully performed with management of the coagulation disorder by preoperative and postoperative infusion of plasma and laboratory control of the coagulation