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På flera platser i Södra Sverige avlägsnas dynvegetation från sanddyner utmed kusten för att öka biodiversiteten i sandiga miljöer. På dessa platser sker även morfologiska förändringar, eftersom dynerna inte längre stabiliseras av vegetationen. I den här fallstudien utvärderas effekten av vegetationsborttagning på dynerosion från vind och vågor. Analys av volym- och arktäckningsförändringar visarAt several places in South Sweden, dune vegetation is removed from coastal dunes with the purpose to increase biodiversity in sandy habitats. At these sites, also morphological changes take place as the dunes are no longer stabilized by vegetation. In this case study at Ängelholm Beach in South Sweden, the effect of vegetation removal on dune erosion by wind and waves is evaluated. Analyses of vol

Denna artikel beskriver den bokutgivning som skedde inom ramen för tidskriften Zenit mellan åren 1968 och 1982. Zenit gav ut böcker i egen regi men redigerade också tre bokserier på Bo Cavefors förlag(två st.) och på Raben & Sjögren (1). Böckerna gavs typografisk form av Leif Thollander. Tidskriftens Zenits bakgrund i den ""nya vänstern"" skisseras. Bokutgivningens innehåll och karaktär beskri

Purpose: The fluid flow in a rotating channel is obviously different from that in a stationary channel due to the existence of Coriolis force, which, in turn, enhances the heat transfer on the trailing side and reduces the heat transfer on the leading side. The purpose of this paper is to study various rib configurations combined with channel orientation on heat transfer and frictional loss in a r

Purpose: In this study, numerical simulations are performed to compare the adiabatic film cooling effectiveness and reveal the difference of film cooling mechanisms of two models with the same geometries and cross-section areas of film holes’ exits at three typical blowing ratios (M = 0.5, 1 and 1.5). The two models are an elliptical model and a cylindrical model with 90° compound angle, respectiv

During memory formation, structural rearrangements of dendritic spines provide a mean to durably modulate synaptic connectivity within neuronal networks. New neurons generated throughout the adult life in the dentate gyrus of the hippocampus contribute to learning and memory. As these neurons become incorporated into the network, they generate huge numbers of new connections that modify hippocampa

G.Fast is a new standard for fixed broadband access that aims at achieving bit rates of 1 Gb/s over short copper loops. In order to give support to simulation, design and performance evaluation tests, the G.Fast recommendation presents examples of some wiring topologies and reference loops describing configurations expected to be found in real G.Fast deployments. Our work describes results of mode

We have experimentally studied the conditions for acoustic particle focusing inside aqueous droplets in two-phase-systems, and confirmed our findings by theoretical analysis. The results show that the acoustic properties of the two fluids have to be matched to achieve strong acoustic resonance and focusing in the system.

This abstract reports a novel acoustofluidic method to measure the hematocrit level of a whole blood sample within 20 seconds. The method is substantially faster than conventional centrifugation methods, has no moving parts and can be fully automated and integrated with further unit operations for analysis of blood samples at the point of care [1].

Purpose: The study aims to focus on rotation effects on a ribbed channel of gas turbine blades for internal cooling. The combination and interaction between secondary flows generated by angled rib geometry and Coriolis forces in the rotating channel are studied numerically. Design/methodology/approach: A radially outward flow passage as an internal cooling test model with and without ribs is used

Purpose: This study aims to clarify the mechanism of film hole location at the span-wise direction of an internal cooling channel with crescent ribs on the adiabatic film cooling performance, three configurations are designed to observe the effects of the distance between the center of the ellipse and the side wall(Case 1, l = w/2, Case 2, l = w/3 and for Case 3, l = w/4). Design/methodology/appro

Purpose: The purpose of this study is to enhance the thermal performance in the labyrinth channel by different ribs shape. The labyrinth channel is a relatively new cooling structure to decrease the temperature near the trailing region of gas turbine. Design/methodology/approach: Based on the geometric similarity, a simplified geometric model is used. The k − ω turbulence model is used to close th

Systemic hyperglycemia and hypercapnia severely aggravate ischemic brain damage when instituted prior to cerebral ischemia. An aberrant cell signaling following ischemia has been proposed to be involved in ischemic cell death, affecting protein kinase C (PKC) and the calcium calmodulin kinase II (CaMKII). Using a cardiac arrest model of global brain ischemia of 10 min duration, we investigated the

ABSTRACT— A model is described in which transient ischemia is induced in rats anaesthetized with N2O:O2 (70:30) by bilateral carotid artery clamping combined with a lowering of mean arterial blood pressure to 50 mm Hg, the latter being achieved by bleeding, or by bleeding supplemented with administration of trimetaphan or phentolamine. By the use of intubation, muscle paralysis with suxamethonium

The article outlines the most pressing justice questions in a transition to a fossil fuel-free welfare state in Sweden.

Introduction: The American Association of Neurologic Surgeons guidelines on the management of traumatic spinal cord injury (SCI), updated in 2013, focus on spinal cord perfusion, early decompressive surgery, and venous thromboembolism (VTE) prophylaxis to improve neurological outcome. Research question: How neurocritical care and initial management have changed with the implementation of updated m

Focusing on three initiatives of the United Nations Framework Convention on Climate Change (UNFCCC) Secretariat – the Momentum for Change Initiative, the Lima–Paris Action Agenda, and the Non-state Actor Zone for Climate Action – this chapter studies how an international environmental bureaucracy can evolve from a low-key and servant-like secretariat to an actor in its own right. It argues that in