1,946 research outputs found
Regenerative Medizin: Verunglückte Forschung - geglückte Operation - glücklicher Patient
No full textSpeed of Publication of Statutes and Regulations in the United Kingdom, Canada, and the United States
No full textExamines reasons for typical delays in publication of statutes & regulations in UK,US, & Canada. Finds US federal laws published more slowly because of time taken to add marginal notes after enactmen
Legal Citation Form: Theory and Practice
No full textSets forth 13 principles as a basis for a system of legal citation forms, and critically reviews various rules in the 13th edition of A Uniform System of Citation
LAN873687 Supplemental Material - Supplemental material for Warming and cooling device using thermoelectric Peltier elements tested on male mice
No full textSupplemental material, LAN873687 Supplemental Material for Warming and cooling device using thermoelectric Peltier elements tested on male mice by Nodir Madrahimov, Ruslan Natanov, Abdurasul Khalikov, Erin C Boyle, Danny Jonigk, Ann-Katrin Knoefel, Thierry Siemeni and Axel Haverich in Laboratory Animals</p
Mathematical modeling and numerical simulation of arterial dissection based on a novel surgeon’s view
No full textThis paper presents a mathematical model for arterial dissection based on a novel hypothesis proposed by a surgeon, Axel Haverich, see Haverich (Circulation 135(3):205–207, 2017. https://doi.org/10.1161/circulationaha.116.025407). In an attempt and based on clinical observations, he explained how three different arterial diseases, namely atherosclerosis, aneurysm and dissection have the same root in malfunctioning Vasa Vasorums (VVs) which are micro capillaries responsible for artery wall nourishment. The authors already proposed a mathematical framework for the modeling of atherosclerosis which is the thickening of the artery walls due to an inflammatory response to VVs dysfunction. A multiphysics model based on a phase-field approach coupled with mechanical deformation was proposed for this purpose. The kinematics of mechanical deformation was described using finite strain theory. The entire model is three-dimensional and fully based on a macroscopic continuum description. The objective here is to extend that model by incorporating a damage mechanism in order to capture the tearing (rupture) in the artery wall as a result of micro-injuries in VV. Unlike the existing damage-based model of the dissection in the literature, here the damage is driven by the internal bleeding (hematoma) rather than purely mechanical external loading. The numerical implementation is carried out using finite element method (FEM)
sj-pdf-1-jba-10.1177_08853282211046800 – Supplemental Material for Pressure-compacted and spider silk–reinforced fibrin demonstrates sufficient biomechanical stability as cardiac patch in vitro
No full textSupplemental Material, sj-pdf-1-jba-10.1177_08853282211046800 for Pressure-compacted and spider silk–reinforced fibrin demonstrates sufficient biomechanical stability as cardiac patch in vitro by Dmitry Bobylev, Mathias Wilhelmi, Skadi Lau, Melanie Klingenberg, Markus Mlinaric, Elena Petená, Florian Helms, Thomas Hassel, Axel Haverich, Alexander Horke and Ulrike Böer in Journal of Biomaterials Applications</p
Mathematical Modeling and Numerical Simulation of Atherosclerosis Based on a Novel Surgeon’s View
No full textThis paper deals with the mathematical modeling of atherosclerosis based on a novel hypothesis proposed by a surgeon, Prof. Dr. Axel Haverich (Circulation 135(3):205–207, 2017). Atherosclerosis is referred as the thickening of the artery walls. Currently, there are two schools of thoughts for explaining the root of such phenomenon: thickening due to substance deposition and thickening as a result of inflammatory overgrowth. The hypothesis favored here is the second paradigm stating that the atherosclerosis is nothing else than the inflammatory response of of the wall tissues as a result of disruption in wall nourishment. It is known that a network of capillaries called vasa vasorum (VV) accounts for the nourishment of the wall in addition to the natural diffusion of nutrient from the blood passing through the lumen. Disruption of nutrient flow to the wall tissues may take place due to the occlusion of vasa vasorums with viruses, bacteria and very fine dust particles such as air pollutants referred to as PM 2.5. They can enter the body through the respiratory system at the first place and then reach the circulatory system. Hence in the new hypothesis, the root of atherosclerotic vessel is perceived as the malfunction of microvessels that nourish the vessel. A large number of clinical observation support this hypothesis. Recently and highly related to this work, and after the COVID-19 pandemic, one of the most prevalent disease in the lungs are attributed to the atherosclerotic pulmonary arteries, see Boyle and Haverich (Eur J Cardio Thorac Surg 58(6):1109–1110, 2020). In this work, a general framework is developed based on a multiphysics mathematical model to capture the wall deformation, nutrient availability and the inflammatory response. For the mechanical response an anisotropic constitutive relation is invoked in order to account for the presence of collagen fibers in the artery wall. A diffusion–reaction equation governs the transport of the nutrient within the wall. The inflammation (overgrowth) is described using a phase-field type equation with a double well potential which captures a sharp interface between two regions of the tissues, namely the healthy and the overgrowing part. The kinematics of the growth is treated by classical multiplicative decomposition of the gradient deformation. The inflammation is represented by means of a phase-field variable. A novel driving mechanism for the phase field is proposed for modeling the progression of the pathology. The model is 3D and fully based on the continuum description of the problem. The numerical implementation is carried out using FEM. Predictions of the model are compared with the clinical observations. The versatility and applicability of the model and the numerical tool allow
Normative reconstruction and social character of freedom in Axel Honneth
No full textO presente objeto de pesquisa busca proceder ao estudo e identificação dos traços essenciais envolvidos na abordagem teórica das relações sociais e políticas trazidas na obra O Direito da Liberdade do filósofo alemão Axel Honneth. Faz-se uma análise da influência hegeliana sobre o conceito de liberdade, assim como dos fatores relacionados com o suprimento das carências subjetivas, mediadas pelas diferentes “esferas” sociais. Honneth, assim, procura trazer à tona a compreensão de um novo modelo de liberdade advindo da Filosofia do Direito de Hegel, o qual se distingue substancialmente dos modelos tradicionais. O autor busca evidenciar a limitação das teorias da justiça de tradição liberal, invocando a necessidade de uma visão integrada das relações sociais experimentadas nas esferas referidas por Hegel, concebendo-se uma experiência concreta de liberdade social. Nesse sentido, evidencia-se o caráter interdisciplinar e emancipatório do método de reconstrução normativa como base teórica para a justificação pública nas sociedades modernas.This research object aims to study and identify the essential traits involved in the theoretical approach of social and political relations brought in the work Freedom’s Right by the german philosopher Axel Honneth. It analyses the hegelian influence on the concept of freedom, as well as the factors related to the supply of subjective needs, mediated by the different social "spheres". Honneth thus seeks to bring to light the understanding of a new model of freedom stemming from Hegel’s Philosophy of Law, which differs substantially from traditional models. The author seeks to highlight the limitation of liberal theories of justice, invoking the need for an integrated view of the social relations experienced in the spheres referred to by Hegel, conceiving a concrete experience of social freedom. In this sense, the interdisciplinary and emancipatory character of the normative reconstruction method is evidenced, as a theorical basis for public justification in modern societies
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