Sökresultat
Filtrera
Filtyp
Din sökning på "*" gav 530811 sökträffar
Too Sharp for its Own Good – Tool Edge Deformation Mechanisms in the Initial Stages of Metal Cutting
© 2017 Metal cutting simulations have become an important part of cutting tool design and the research in the field in general. One of the most important aspects of modeling is the accuracy of the tool geometry. 3D microscopy is used for measuring the tool edge radius with good accuracy. However, especially with sharp tools, i.e. small tool edge radii, the measurements, no matter how accurate, are
Heat matters when matter heats – The effect of temperature-dependent material properties on metal cutting simulations
The goal of metal cutting research is to predict process conditions accurately with a model or a simulation, in order to optimize and develop the processes. Development of such a model requires understanding of multiple branches of physics and engineering such as continuum mechanics, thermodynamics, tribology and materials science. For an accurate model, each aspect of the process must be modelled
Dull punch line is not a joke – Worn cutting edge causes higher iron losses in electrical steel piercing
© 2018 Elsevier Ltd Electrical steel is used for the active parts in electrical machinery that form the magnetic circuits because the material experiences low iron loss, and thus, has superior magnetizing properties. A typical electrical sheet has a thickness of 0.5 mm and is punched into its final shape via a piercing process. Piercing causes large deformations and residual stresses in the narrow
Effect of low-molecular-weight heparin (Tinzaparin) and unfractionated heparin on platelet aggregation
A low-molecular-weight heparin (LMWH), Tinzaparin, was compared with unfractionated heparin (UFH) for their effects on platelet aggregation in vitro and ex vivo. Both heparins showed a dose-dependent proaggregatory effect on ADP- and collagen-induced platelet aggregation in vitro, but LMWH was less potent. The differences in potency between Tinzaparin and UFH depended on how the compounds were com
Plasma MOTS-c levels are associated with insulin sensitivity in lean but not in obese individuals
Mitochondrial open reading frame of the 12S rRNA-c (MOTS-c) is a mitochondrial-derived peptide that attenuates weight gain and hyperinsulinemia when administered to high fat-fed mice. MOTS-c is therefore a potential regulator of metabolic homeostasis under conditions of high-energy supply. However, the effect of insulin resistance and obesity on plasma MOTS-c concentration in humans is unknown. To
Protamine neutralization of intravenous and subcutaneous low-molecular-weight heparin (tinzaparin, Logiparin(TM)). An experimental investigation in healthy volunteers
The aim of the present study was to investigate whether tinzaparin sodium (a low-molecular-weight heparin (LMWH)) was fully and permanently neutralized in vivo in man by protamine sulphate (PS) after intravenous (i.v.) or subcutaneous (s.c.) injection. Fifty healthy adults equally divided in five age- and sex-matched groups were included. The groups received 50 IU unfractionated heparin (UH)/kg bo
Leisure travel distribution patterns of Germans: Insights for climate policy
Vad är problemet? Uppfattningar om alkoholens skadeverkningar.
Antithrombotic effect of recombinant truncated tissue factor pathway inhibitor (TFPI1-161) in experimental venous thrombosis : A comparison with low molecular weight heparin
The aim was to investigate whether a truncated recombinant Tissue Factor Pathway Inhibitor (TFPI1-161) which lacked the third Kunitz-type domain and the basic c-terminal region, had an antithrombotic effect comparable to LMWH in a randomised double-dummy study. The experimental thrombosis was induced in jugular veins, in a total of 40 rabbits by a combination of destruction of the endothelium and
Tissue factor pathway inhibitor (TFPI) and its response to heparin in patients with spontaneous deep vein thrombosis
Vulnerability of coastal beach tourism to flooding
Temporal trend and regional disparity in osteoarthritis hospitalisations in Sweden 1998-2015
AIM: This study investigated time trend and regional disparities in hospitalisations due to osteoarthritis (OA) among people aged ≥20 years in Sweden from 1998 through 2015.METHODS: National and regional data on hospital admissions with a primary diagnosis of OA were collected from the National Patient Register. The absolute and relative regional disparities were assessed using the absolute weight
Air transport and climate change
The Psychology of the Car : Automobile Admiration, Attachment, and Addiction
Food Tourism and Regional Development : Networks, products and trajectories
The Routledge Handbook of Tourism and Sustainability
Liveness becomes Entelechy - A scheme for L6
Integrated development environments have provided increasingly powerful tools for software creation, and yet the creation of complex computer programs remains difficult and time-consuming. Liveness in a programming environment has been identified as one direction in which to pursue further improvements in programmer productivity. We propose a scheme for achieving strategically predictive liveness, t
Bandwidth and gain improvement of a crossed slot antenna with metasurface
A wideband metasurfaced (MS) slot antenna is proposed for circularly polarized (CP) operation. The antenna consists of a crossed slot antenna (CSA) and a MS placed at a short distance above the CSA. The CSA has two slots placed in orthogonal positions and with distributed elements to generate two E-fields with 90°-phase difference for CP radiation. A microstrip line is used to single feed the CSA
A Wideband Dual-polarized Inductor-end Slot Antenna with Stable-beamwidth
This letter presents a wideband cross-slot antenna (CSA) with inductor loadings for dual polarization. The effects of the ground size on the impedance are investigated. To achieve a compact size, a very small ground having the same hypotenuse length as the slot is used. The inductor loadings are used at both ends of the slot to reduce the size further. Simulated results show that the loaded induct