Search results for "MBL"
showing 10 items of 1636 documents
Replication of hepatitis C virus
2000
The evolution of collective infectious units in viruses
2019
Viruses frequently spread among cells or hosts in groups, with multiple viral genomes inside the same infectious unit. These collective infectious units can consist of multiple viral genomes inside the same virion, or multiple virions inside a larger structure such as a vesicle. Collective infectious units deliver multiple viral genomes to the same cell simultaneously, which can have important implications for viral pathogenesis, antiviral resistance, and social evolution. However, little is known about why some viruses transmit in collective infectious units, whereas others do not. We used a simple evolutionary approach to model the potential costs and benefits of transmitting in a collect…
Eccentric fixation measurements using visuoscopy and Macula Integrity Tester (MIT) in children with amblyopia
2021
The aim of the work was to compare measurements of eccentric fixation in children with amblyopia using two different methods, a traditional visuoscopy and MIT. Monocular fixation was evaluated using visuoscopy and MIT in 16 patients (from 5 to 9 years old). Measurements were started with the better seeing eye to compare the results obtained with the amblyopic eye. All study participants were selected with anisometropic and refractive amblyopia. Visuoscopy is simpler than MIT and less dependent on patient responses, so visioscopy can be used for young children who have not yet acquired verbal skills. Children over the age of 5 can more easily understand the MIT method and get more reliable r…
Structure of longitudinal chromomagnetic fields in high energy collisions
2014
We compute expectation values of spatial Wilson loops in the forward light cone of high-energy collisions. We consider ensembles of gauge field configurations generated from a classical Gaussian effective action as well as solutions of high-energy renormalization group evolution with fixed and running coupling. The initial fields correspond to a color field condensate exhibiting domain-like structure over distance scales of order the saturation scale. At later times universal scaling emerges at large distances for all ensembles, with a nontrivial critical exponent. Finally, we compare the results for the Wilson loop to the two-point correlator of magnetic fields.
Tīmekļa lietotņu veiktspējas optimizācija izmantojot WebAssembly
2019
Bakalaura darba “Tīmekļa lietotņu veiktspējas optimizācija izmantojot WebAssembly” mērķis ir noskaidrot WebAssembly izmantošanas un nepieciešamības apstākļus, kā arī veikt pētijumu par tīmekļa lietotnes veiktspējas analīzi pēc moduļu pārstrādes uz WebAssembly kompilētu kodu, lai varētu noteikt, kad to ir vērts izmantot. Darbs sika sadalīts divās sadaļās. Pirmajā sadaļā tika veikta analīze par WebAssembly, tā darbības principiem, kā arī izmantošanu programmatūres izstrādē. Otrajā sadaļā tiks aprakstīts izveidotais projekts, kā arī salīdzināts tīmekļa lietotnes kods un veiktspēja pirms un pēc moduļu pārstrādes. Bakalaura darbs izklāstīts 20 lappusēs, ilustrēts ar 15 attēliem un 4 tabulām. Lit…
WebAssembly iespēju izpēte, veicot klienta puses lietotnes salīdzinājumu .Net un JS vidēs
2018
Darbā tiek izpētīta tīmekļa programmēšanas vēsture un mūsdienas, aplūkojot dažādas tīmekļa lietotņu izstrādes iespējas. Darbā tiek izpētīti dažādi vienas lapas lietotņu izstrādes ietvari un paradigmas. Izmantojot izpētes rezultātus, darba praktiskajā daļā tika izstrādātas divas lietotnes, kas demonstrē vienādas iespējas izmantojot divas dažādas programmēšanas valodas – TypeScript un C#. Izstrādātajām lietotnēm tika aprakstīta un salīdzināta to izstrādes gaita, kā arī tika iegūti kvantitatīvi dati, kas apraksta ietvaru piemērotību tīmekļa lietotņu izstrādei.
De novogenome assembly of the land snailCandidula unifasciata(Mollusca: Gastropoda)
2021
AbstractAmong all molluscs, land snails are an economically and scientifically interesting group comprising edible species, alien species and agricultural pests. Yet, despite its high diversity, the number of whole genomes publicly available is still scarce. Here, we present the draft genome assembly of the land snailCandidula unifasciata, a widely distributed species along central Europe, which belongs to Geomitridae family, a group highly diversified in the Western-Palearctic region. We performed a whole genome sequencing, assembly and annotation of an adult specimen based on PacBio and Oxford Nanopore long read sequences as well as Illumina data. A genome of about 1.29 Gb was generated w…
Thermodynamical aspects regarding the formation of self-assembly decylpolyglucoside structures
2005
In this study, we used a generalized form of a recently reported parametrization based on the differential geometry and the thermodynamics of dispersed systems to ascertain the capability of decylpolyglucoside alone or in association with cholesterol to form vesicle structures (niosomes). The theoretical calculation of the energy balance involved in the vesicles formation was carried out using values of the critical concentration of formation (ccf), surface tension and the molar surface area of the non-ionic surfactant. Furthermore, in order to confirm the theoretical results found in this work, we prepared and characterized vesicles made with decylpolyglucoside and cholesterol. The vesicle…
Grand-canonical approach to density functional theory of electrocatalytic systems: Thermodynamics of solid-liquid interfaces at constant ion and elec…
2018
Properties of solid-liquid interfaces are of immense importance for electrocatalytic and electrochemical systems, but modeling such interfaces at the atomic level presents a serious challenge and approaches beyond standard methodologies are needed. An atomistic computational scheme needs to treat at least part of the system quantum mechanically to describe adsorption and reactions, while the entire system is in thermal equilibrium. The experimentally relevant macroscopic control variables are temperature, electrode potential, and the choice of the solvent and ions, and these need to be explicitly included in the computational model as well; this calls for a thermodynamic ensemble with fixed…
Size control of InAs∕InP(001) quantum wires by tailoring P∕As exchange
2004
The size and emission wavelength of self-assembled InAs∕InP(001) quantum wires (QWrs) is affected by the P∕As exchange process. In this work, we demonstrate by in situ stress measurements that P∕As exchange at the InAs∕InP interface depends on the surface reconstruction of the InAs starting surface and its immediate evolution when the arsenic cell is closed. Accordingly, the amount of InP grown on InAs by P∕As exchange increases with substrate temperature in a steplike way. These results allow us to engineer the size of the QWr for emission at 1.3 and 1.55 μm at room temperature by selecting the range of substrate temperatures in which the InP cap layer is grown.