Solvability of curves on surfaces

In this article, we study subloci of solvable curves in $\mathcal{M}_g$ which are contained in either a K3-surface or a quadric or a cubic surface. We give a bound on the dimension of such subloci. In the case of complete intersection genus $g$ curves in a cubic surface, we show that a general such curve is solvable.Comment: 11 page

Measurement-based Energy Consumption Profiling of Mobile Radio Networks

Abstract —The exponential growth of mobile traffic is forcing operators to increase quickly the capacity of their network and extend it with new technologies and improved topologies, such as heterogeneous layouts with small cells. However, since revenues cannot grow at the same rate of traffic, the main challenge is to manage capacity expansion with reduced costs. In addi- tion to fixed costs for the new network infrastructures, operational costs are becoming critical, mainly for en- ergy bill component. Moreover, the carbon footprint of mobile access networks is considered one of the largest of the whole ICT (Information and Communications Technology) sector and its reduction is fundamental for the environmental sustainability of the Internet economy. Due to these reasons, improving the energy efficiency of the access network is crucial for mobile operators. In order to do that, monitoring the energy consumption of the network components and defining models of energy profile are valuable approaches for es- timating energy costs and identifying the most efficient configurations. In this paper, we present an energy consumption monitoring system that has been designed and im- plemented in three different countries using separate sensors for the radio and base-band components of second, third and fourth generation systems. We also propose an energy profiling approach that simplifies the characterization of the different components and allows the estimation of the energy efficiency based on traffic statistics

Oksymetriscreening av nyfødte - Tidligere diagnostikk av medfødt hjertesykdom

Bakgrunn/emne: Pulsoksymetri av barn i løpet av første levedøgn kan hjelpe til å avdekke ikke diagnostiserte medfødte hjertesykdommer. Pulsoksymetri er ikke en rutineundersøkelse ved fødeavdelingen ved Ullevål Universitetssykehus. I dette kvalitetsforbedringsprosjektet ville vi innføre pulsoksymetriscreening av nyfødte, med ønske om å fremskynde diagnostikken av medfødte hjertefeil ved Ullevål sykehus. Kunnskapsgrunnlaget: Det ble i hovedsak studert artikler i form av prospektive studier og systematiske oversikter. Søkemotorene Pubmed/Medline, Cochrane og Embase ble brukt. Ut fra inklusjonskriteriene ble 5 studier og 2 systematiske oversikter inkludert. Det ble også forsøkt å søke etter en nasjonal evidensbasert retningslinje for pulsoksymetri screening av nyfødte uten treff, det bekrefter at det inntil videre ikke eksisterer noen nasjonale retningslinjer når det gjelder pulsoksymetriscreening av nyfødte. Tiltak og metode: Vi valgte å beskrive et kvalitetsforbedringsprosjekt som innebar en endring av bestående retningslinjer, der vi innførte et nytt element; oksymetriscreening i retningslinjene for klinisk undersøkelse av nyfødte. For å sikre at den nye prosedyren følges skal resultatet av målingen føres inn i elektronisk pasientjournal (prosessindikator). Resultatindikatoren vår er ”andelen barn med medfødt hjertesykdom diagnostisert før utskrivelse fra barselavdelingen”. Organisering: Vi organiserte prosjektet etter Demnings kvalitetshjul, PDSA- hjulet (Plan, Do, Study og Act), en syklisk kvalitetsendringsmodell som baserer seg på samarbeid med ledelse og faggrupper, og evaluering og eventuell korrigering av prosjektet. Basert på en algoritme presentert i en artikkel av Meberg et al. laget vi et flytskjema som viste hvordan man skal gå videre med resultatene fra oksymetriscreeningen. Resultat og vurdering: Kunnskapsgrunnlaget støtter bruk av oxymetriscreening av nyfødte. Dette vil føre til tidligere diagnostisering av barn med hjertefeil og gi mulighet for tidligere intervensjon. Dette vil gi en stor gevinst for de som er rammet av medfødt hjertefeil. Prosedyren er ikke invasiv og krever lite økonomiske ressurser og ingen ekstra personell. Det er sannsynelig at den nye retningslinjen vil bli innført ved barselavdelingen ved Ullevål Universitetssykehus

PULMONARY DISEASE IN PRIMARY CILIARY DYSKINESIA: CORRELATION BETWEEN HRCT AND STATIC LUNG VOLUMES

Background Primary ciliary dyskinesia is associated with progressive lung damage eventually culminating in chronic infection with Pseudomonas aeruginosa. Lung damage is usually evaluated by high-resolution computed tomography (HRCT). Objective To evaluate whether the presence of HRCT abnormalities and of Pseudomonas aeruginosa infection was better predicted by spirometry or plethysmography. Methods A cross-sectional study was performed in consecutive patients diagnosed with PCD. All patients underwent sputum culture, spirometry, plethysmography and HRCT over a 48 hour period. Results Fifty patients (26 children) were studied. Pseudomonas aeruginosa infection was found in 40% of the patients and bronchiectasis in 88%. There was a significant correlation between infection with Pseudomonas aeruginosa and extent of bronchiectasis (p=0.009, r=0.367) and air-trapping (p=0.03 r=0.315). Moreover, there was a significant association between infection with Pseudomonas aeruginosa and RV values > 150% (p=0.04) and RV/TLC ratio > 140% (p=0.001), but not between infection with Pseudomonas aeruginosa and FEV1< 80%, or FEF25-75% < 70%, or FEV1/FVC < 70% (< 80% in children). Severity of the total lung impairment on chest HRCT inversely correlated with FEV1 (p= 0.02; r= -0.322), FVC (p= 0.007; r= -0.376) and directly correlated with RV (p= 0.003; r=0.423), and RV/TLC (p < 0.001; r= 0.513). Conclusions Plethysmography predicts better than spirometry HRCT abnormalities, and might be a useful test to reduce the number of HRCT scans performed in PCD

Fracture strength and ribbond fibers : in vitro analysis of mod restorations

Ribbond fibers are supposed to be a reinforcing material in restoration of compromised teeth. This study aims to compare MOD restorations with and without Ribbond Fiber in terms of fracture strength under axial loading; to identify the minimum depth of M

Stamp technique: an explorative SEM analysis

Background: Achieving correct tooth anatomy and saving time at the dental chair are some of the goals of modern restorative dentistry. Stamp technique has gained acceptance in clinical practice. The aim of this study was to evaluate the effectiveness of this technique in terms of microleakage, voids, overhangs and marginal adaptation of Class I restorations, and to analyse the operative times in comparison with traditional restorative procedures. Methods: Twenty extracted teeth were divided into 2 groups. Ten teeth in the study group (SG) were Class I prepared and restored using stamp technique, and ten teeth in the control group (CG) were Class I restored traditionally. SEM analysis was performed to evaluate voids, microleakage, overhangs, and marginal adaptation, and operative times were recorded. A statistical analysis was performed. Results: There were no significant differences in microleakage, marginal adaptation and filling defects between the two groups, however, the stamp technique seems to facilitate the formation of large overflowing margins that require a careful finishing phase. Conclusions: Stamp technique does not seem to have any critical aspects in terms of restoration durability and it can be performed in a short time

Waterhouse Friderichsen Syndrome: Medico-legal issues

The Waterhouse-Friderichsen Syndrome (WFS) is a pediatric emergency characterized by high mortality due to the combination of bilateral adrenal haemorrhage, meningococcal infection and cutaneous purpura. WFS often raises medico-legal problems related to missed or delayed diagnosis mainly related to the short clinical course, the sudden onset of symptoms and unexpected death. We report the death of a 2-year-old child who had no other pathologies. Death occurred quickly about 20 h after the first care visit. The forensic autopsy was ordered following the parental complaint for diagnostic delay in primary care. Clinical data, autopsy and histological findings were consistent for WFS by Neisseria meningitidis (NM) serotype B. Medical malpractice was excluded. WFS has a rapid clinical course. By the time fever and purpura are reported, it may be too late as thrombotic and bleeding complications may already be present