Search results

The reflectivity spectrum in Vertical-cavity surface-emitting lasers (VCSELs) is investigated by replacing High Contrast Grating (HCG) layer instead of distributed Bragg reflectors (DBR) as a top mirror. In addition, the scalability feature in the HCG layer is used to design a reflector for λ = 1;300 nm. High reflectivity (>99%) mirrors in VCSELs are mandatory because of the short gain length. In

In gas turbine engine, nickel base alloy, such as Alloy 718, accounts for almost half of the total material requirement. Nickel-base superalloys are used for gas turbine components mainly because of their outstanding strength and resistance to oxidation at high temperatures (> 550°C). The massive cost involved with the machining of nickel alloys has driven continued research and development of cut

AbstractAim: This study sought to investigate the hypothesis that children dying outside a pediatric intensive care unit (PICU) after PICU discharge have a limitation of medical treatment (LOMT) order in place, limiting PICU readmission at the time of death.Methods: A cohort was identified of all children (n=3890; 5019 admissions) treated in a PICU in Sweden over 3 consecutive years between Januar

This paper takes as a point of departure the analysis of complex blade industries as a proxy for cultural practices, socially learned and transmitted habits within a human network. Our main objective is to study how traditions and/or habits are protected and reproduced or changed as groups of people are confronted with changed natural and/or social environments. Our case study is the hypothesized

In this article I discuss whether viewing safety as a necessary condition for knowing entails that the truth-conditions for knowledge is context-sensitive. I argue that, while it is far from clear-cut, there is at least not a strict entailment between the positing of safety as necessary for knowledge and the context-sensitivity of knowledge, and so, that one can remain an invariantist about knowle

Abstract: Activation of trophic factor receptors stimulates tyrosine phosphorylation on proteins and supports neuronal survival. We report that in the recovery phase following reversible cerebral ischemia, tyrosine phosphorylation increases in the membrane fraction of the resistant hippocampal CA3/dentate gyrus (DG) region, whereas in the sensitive CA1 region or striatum, tyrosine phosphorylation

Using microdialysis, extracellular noradrenaline (NA) levels in the rat cerebral cortex were studied under isoflurane/N2O anaesthesia before, during and for 6 hours following 10 min of forebrain ischemia in a 2-vessel occlusion model. A microdialysis probe was introduced into the parietal cortex and dorsal hippocampus in anaesthetized rats and continuously perfused with Krebs-Ringerbicarbonate buf

Transient periods of global cerebral ischemia lead to selective neuronal damage in the striatum. We investigated the effects of unilateral 6-hydroxydopamine lesions of the mesostriatal dopamine (DA) system on the density and distribution of neuronal necrosis in the rat striatum following ischemia induced by bilateral occlusion of the common carotid arteries combined with hypotension. After both 12

The excitatory amino acid glutamate has been suggested to be an important mediator of the selective CA1 hippocampal damage which follows transient cerebral ischemia. In order to evaluate the possible involvement of altered glutamate receptor regulation in the expression of the delayed neuronal necrosis following ischemia, we have determined the density of glutamate receptor subtypes in the rat hip

Extracellular levels of striatal γ-aminobutyric acid (GABA) and taurine were monitored during insulin-induced hypoglycemia using microdialysis. At the onset of isoelectricity in the electroencephalogram (EEG), a transient 5-fold increase in the levels of GABA occurred. Taurine levels increased 5 min following the onset of isoelectricity and continued to increase during the entire isoelectric perio

Synucleinopthies are neurodegenerative diseases characterised by the formation of α-synuclein-rich intracellular inclusions in neurons and glia. Traditionally, animalmodels and immortalized cell lines have been used to investigate why and how theseinclusions form, and how they impact on cellular function. Recent advances incellular reprogramming and directed differentiation have enabled the genera

Liquid droplets sitting on nanowire (NW) tips constitute the starting point of the vapor-liquid-solid method of NW growth. Shape and volume of the droplet have been linked to a variety of growth phenomena ranging from the modification of growth direction, NW orientation, crystal phase, and even polarity. In this work we focus on numerical and theoretical analysis of the stability of liquid droplet

Evaluation of the optic nerve head topography is one of the most important methods to diagnose and monitor patients with glaucoma. Until recently, optic nerve head topography has most often been judged by either ophthalmoscopy or from optic disc photographs. These methods are subjective and examiners do not have access to absolute measurements of the optic disc size and cup depth. The result of su

Introduction: Deliberate self-harm (DSH) is a common symptom in psychiatric disorders. It is a cross-diagnostic symptom, although it has mainly been associated with borderline personality disorder (BPD). Research has suggested an association between DSH and deficits in executive functioning. The main aim of the current study was to assess three specific aspects of executive functioning (EF) (worki

Nyheter | Avdelningen för högskolepedagogisk utveckling Alla nyheter 22 juni 2026 Skicka in ditt bidrag till LUTL – deadline 15 augusti Nu kan du skicka in abstracts till Lunds universitets högskolepedagogiska utvecklingskonferens (LUTL). Konferensen anordnas av fakulteterna och avdelningen för högskolepedagogisk utveckling (AHU). 18 maj 2026 För långsiktig kvalitet behöver vi tänka om kring kompe

https://www.ahu.lu.se/nyheter/ - 2026-07-06

Studentguide på Vattenhallen | Vattenhallen Hoppa till huvudinnehåll Den här webbplatsen använder cookies för att förbättra användarupplevelsen. Genom att fortsätta använda webbplatsen samtycker du till att cookies används enligt vår cookie-policy (på LTH:s webbplats) . Absolut nödvändiga cookies Dessa cookies är nödvändiga för att webbplatsen ska fungera och kan inte stängas av i våra system. Des

https://www.vattenhallen.lu.se/om-oss/arbeta-hos-oss/studentguide-paa-vattenhallen/ - 2026-07-06