Search results for "PLASMA"
showing 10 items of 4043 documents
Temperature dependence of η / s of strongly interacting matter: Effects of the equation of state and the parametric form of ( η / s ) ( T )
2020
We investigate the temperature dependence of the shear viscosity to entropy density ratio η/s using a piecewise linear parametrization. To determine the optimal values of the parameters and the associated uncertainties, we perform a global Bayesian model-to-data comparison on Au+Au collisions at √sNN=200 GeV and Pb+Pb collisions at 2.76 TeV and 5.02 TeV, using a 2+1D hydrodynamical model with the Eskola-Kajantie-Ruuskanen-Tuominen (EKRT) initial state. We provide three new parametrizations of the equation of state (EoS) based on contemporary lattice results and hadron resonance gas, and use them and the widely used s95p parametrization to explore the uncertainty in the analysis due to the c…
Atmospheric pressure non-equilibriumplasma for the production of composite materials
2014
In the evolving field of tissue engineering, continuous advances are required to improve scaffold design and fabrication to obtain biomimetic supports for cell adhesion, proliferation, penetration and differentiation. Both electrospun fibrous scaffolds and hydrogels are used in this field since they well reproduce the structure of the extracellular matrix (ECM) of many biological tissues. Limitations of these two types of materials can be overcome through their combination, by developing composite structures combining enhanced mechanical properties (provided by the fibrous components) and improved cell penetration (provided by the gel phase) in a superior ability to mimic natural ECM that i…
Von Willebrand-Syndrom - Blutungsrisiko bei HNO-Eingriffen im Kindesalter
1994
Von Willebrand's disease (vWD) is the most common inherited bleeding disorder. Typical clinical features such as bleeding after surgery or trauma might suggest the disease. We present a series of 24 patients with vWD treated between 1989 and 1992. Diagnosis was confirmed by a reduction in plasma factor VIII antigen concentration, reduction of ristocetin cofactor activity and reduced factor VIII activity. Seventeen of the patients underwent surgery (7 adenoidectomies, 8 tonsillectomies, 2 paranasal sinus operations) and received preoperative stimulation of von Willebrand factor (vWF) using DDAVP. This resulted in a rapid increase in plasma vWF concentration from an average of 56% before stim…
Effect of Mycoplasma agalactiae mastitis on milk production and composition in Valle dell Belice dairy sheep
2019
Contagious agalactia (CA), a disease caused by Mycoplasma agalactiae and other pathogenic mycoplasmas, is a well-known multietiological syndrome affecting dairy breeds of sheep and goats in the Mediterranean basin. The aim of this work was to study the effect on milk production and composition of mastitis caused by M. agalactiae in Valle del Belice dairy sheep. All ewes were manually milked twice daily and the milk from both daily milking was analysed for milk composition and somatic cell counts. Moreover the morning milk samples were collected aseptically from each animal for bacteriological analyses. A mixed linear model was utilised to consider milk production and composition between ani…
Measurements of inclusive jet spectra in pp and central Pb-Pb collisions at √sNN = 5.02 TeV
2020
This article reports measurements of the pT-differential inclusive jet cross section in pp collisions at √s = 5.02 TeV and the pT-differential inclusive jet yield in Pb-Pb 0-10% central collisions at √sNN = 5.02 TeV. Jets were reconstructed at midrapidity with the ALICE tracking detectors and electromagnetic calorimeter using the anti-kT algorithm. For pp collisions, we report jet cross sections for jet resolution parameters R=0.1-0.6 over the range 20<pT,jet<140 GeV/c, as well as the jet cross-section ratios of different R and comparisons to two next-to-leading-order (NLO)-based theoretical predictions. For Pb-Pb collisions, we report the R=0.2 and R=0.4 jet spectra for 40<pT,jet<140 GeV/c…
Periodic Beam Current Oscillations Driven by Electron Cyclotron Instabilities in ECRIS Plasmas
2014
Experimental observation of cyclotron instabilities in electron cyclotron resonance ion source plasma operated in cwmode is reported. The instabilities are associated with strong microwave emission and a burst of energetic electrons escaping the plasma, and explain the periodic oscillations of the extracted beam currents. The instabilities are shown to restrict the parameter space available for the optimization of high charge state ion currents. nonPeerReviewed
Track finding at Belle II
2021
Computer physics communications 259, 107610 (2021). doi:10.1016/j.cpc.2020.107610
Feeding Dairy Ewes with Fresh or Dehydrated Sulla (Sulla coronarium L.) Forage. 1. Effects on Feed Utilization, Milk Production, and Oxidative Status
2022
Feeding dairy ewes with fresh sulla forage (FSF), a legume species containing condensed tannins (CT), has been shown to increase feed intake, milk yield, and casein and enhances the oxidative status of animals. Dehydration of FSF could be an alternative to hay-making to preserve the nutritional properties. This research aimed to compare the responses of dairy ewes fed with diets based on sulla hay (SH), pelleted dehydrated sulla forage (DSF), or FSF in terms of efficiency of feed utilization, milk production, and the balance between oxidant (reactive oxygen metabolites (ROMs)) and antioxidant (biological antioxidant potential (BAP)) substances at the plasma level. Ten first-lambing (FL) and…
Plasman diamagnetismi ECR-ionilähteessä
2009
Tässä tutkielmassa pyritään esittämään teoreettiset lähtökohdat plasman diamagneettisen ilmiön kuvaamiselle magnetohydrodynamiikan avulla. Teoreettisessa osiossa määritellään mitä plasma on ja johdetaan plasmalle karakteristiset ominaisuudet. Koska plasma on pääasiassa ionisoitunutta kaasua, se käyttäytyy kuten neste, johon vaikuttavat sähköiset ja magneettiset voimat. Altistettaessa plasma ulkoiselle magneettikentälle, plasman sisällä syntyy diamagneettinen virta, joka synnyttää ulkoista magneettikenttää heikentävän kentän. Tätä ilmiötä kutsutaan plasman diamagneettiseksi ilmiöksi. Kokeellisessa osiossa esitetään ECR-ionilähteen tärkeimmät ominaisuudet, toimintaperiaate sekä lähtökohdat pl…
Molecular mechanisms of cytoplasmic polyadenylation in drosophila
2012
Drosophila early embryogenesis is an ideal system to study control of gene expression at the post transcriptional level, since at this stage there is little or no transcription. This first section gives a brief overview on early development in Drosophila. Since in this thesis, toll, a maternal mRNA implicated in the establishment of the dorso-ventral axis during early stages of embryonic development, is used as a model to uncover the molecular mechanism of cytoplasmic polyadenylation at this developmental stage.