Search results for "SLI"

Nanohydrogel Formation within the Halloysite Lumen for Triggered and Sustained Release

2018

An easy strategy to obtain nanohydrogels within the halloysite nanotube (HNTs) lumen was investigated. Inorganic reverse micelles based on HNTs and hexadecyltrimethylammonium bromides were dispersed in chloroform, and the hydrophilic cavity was used as a nanoreactor to confine the gel formation based on alginate cross-linked by calcium ions. Spectroscopy and electron microscopy experiments proved the confinement of the polymer into the HNT lumen and the formation of calcium-mediated networks. Biological tests proved the biocompatibility of the hybrid hydrogel. The nanogel in HNTs was suitable for drug loading and sustained release with the opportunity of triggered burst release by chemical …

Capillary Rise in Nanopores: Molecular Dynamics Evidence for the Lucas-Washburn Equation

2007

When a capillary is inserted into a liquid, the liquid will rapidly flow into it. This phenomenon, well studied and understood on the macroscale, is investigated by Molecular Dynamics simulations for coarse-grained models of nanotubes. Both a simple Lennard-Jones fluid and a model for a polymer melt are considered. In both cases after a transient period (of a few nanoseconds) the meniscus rises according to a $\sqrt{\textrm{time}}$-law. For the polymer melt, however, we find that the capillary flow exhibits a slip length $\delta$, comparable in size with the nanotube radius $R$. We show that a consistent description of the imbibition process in nanotubes is only possible upon modification o…

The role of PMCT for the assessment of the cause of death in natural disaster (landslide and flood): a Sicilian experience

2021

AbstractIn this report, the authors provide a contribution of PMCT in assessing the cause of death due to natural disasters. Here, the PMCT findings of 43 subjects who died during both landslide and flood were described. The post-mortem imaging revealed, clearly, traumatic injuries and/or the presence of foreign material in airways allowing to assess the cause of death of each subject, together with external inspection and the collected circumstantial data. Particularly, the PMCT has been helpful for characterization and localization of the clogging substance in airways providing findings on bronchial branches involvement. Moreover, the investigation offered detailed data on skeletal injuri…

Bērnu ar neiromuskulārām saslimšanām dzīves kvalitātes izpēte pēc "KIDSCREEN-52" aptaujas rezultātiem

2020

Konkrēti Latvijā iepriekš nav veikti pētījumi, lai izanalizētu bērnu ar neiromuskulārām saslimšanām dzīves kvalitāti. Biežākās no neiromuskulārām saslimšanām pētījumā ir bērnu cerebrālā trieka un neprecizētais miozīts, tādēļ rezultātos tiek analizēta šo bērnu dzīves kvalitāte. Bērniem ar spina bifida arī tika izskatīta dzīves kvalitāte, jo ar šādiem bērniem man nācies dzīvē saskarties vairākkārt, tādēļ bija vēlme papētīt plašāk. Pētījuma mērķis. Izanalizēt bērnu ar neiromuskulārām saslimšanām dzīves kvalitāti vecuma posmā no astoņiem līdz astoņpadsmit gadiem, izmantojot Kidscreen-52 anketu iegūtos rezultātus. Materiāli un metodes. Šķērsgriezuma pētījums. Bērniem un pusaudžiem, kā arī viņu v…

Nierakmeņu slimības ķirurģiskās ārstēšanas metodes un to ilgums atkarībā no akmeņa izmēra

2018

Nierakmeņu slimība ir viena no izplatītākajām nieru un urīnceļu saslimšanām pasaulē, kuras prevalence katru gadu pieaug. Katru gadu šī pataloģija skar miljoniem cilvēku. Nierakmeņu slimības sastopamība populācijā ir vienmērīgi izplatīta starp vīriešiem un sievietēm. Slimība var skart cilvēkus jebkurā vecuma grupā. Diplomdarba mērķis bija analizēt nierakmeņu slimības ķirurģiskās ārstēšanas metodes un to ilgumu atkarībā no dažādiem akmens parametriem un lokalizācijām. Diplomdarbā tika veikts retrospektīvs pētījums un tika analizēti 78 pacienti, kas stacionēti PSKUS uroloģijas nodaļā ar diagnozi N20 (nieres un urīnvada akmens) un kuriem p…

On two topological cardinal invariants of an order-theoretic flavour

2012

Noetherian type and Noetherian $\pi$-type are two cardinal functions which were introduced by Peregudov in 1997, capturing some properties studied earlier by the Russian School. Their behavior has been shown to be akin to that of the \emph{cellularity}, that is the supremum of the sizes of pairwise disjoint non-empty open sets in a topological space. Building on that analogy, we study the Noetherian $\pi$-type of $\kappa$-Suslin Lines, and we are able to determine it for every $\kappa$ up to the first singular cardinal. We then prove a consequence of Chang's Conjecture for $\aleph_\omega$ regarding the Noetherian type of countably supported box products which generalizes a result of Lajos S…

Spectrum of non-cardiac collateral findings in patients with suspected coronary artery disease assessed with Multislice Computed Tomography Coronary …

2009

A Sliding Window-Based Method to Detect Selective Constraints in Protein-Coding Genes and Its Application to RNA Viruses

2002

Here we present a new sliding window-based method specially designed to detect selective constraints in specific regions of a multiple protein-coding sequence alignment. In contrast to previous window-based procedures, our method is based on a nonarbitrary statistical approach to find the appropriate codon-window size to test deviations of synonymous (d(S)) and nonsynonymous (d(N)) nucleotide substitutions from the expectation. The probabilities of d(N) and d(S) are obtained from simulated data and used to detect significant deviations of d(N) and d(S) in a specific window region of the real sequence alignment. The nonsynonymous-to-synonymous rate ratio (w = d(N)/d(S)) was used to highlight…

Implementation Aspects of 3D Lattice-BGK: Boundaries, Accuracy, and a New Fast Relaxation Method

1999

In many realistic fluid-dynamical simulations the specification of the boundary conditions, the error sources, and the number of time steps to reach a steady state are important practical considerations. In this paper we study these issues in the case of the lattice-BGK model. The objective is to present a comprehensive overview of some pitfalls and shortcomings of the lattice-BGK method and to introduce some new ideas useful in practical simulations. We begin with an evaluation of the widely used bounce-back boundary condition in staircase geometries by simulating flow in an inclined tube. It is shown that the bounce-back scheme is first-order accurate in space when the location of the non…

Total Nut, Tree Nut, and Peanut Consumption and Metabolic Status in Southern Italian Adults.

2021

Background: Nut consumption has been associated with cardio-metabolic health benefits. However, studies conducted in the Southern Italian population, where adherence to the Mediterranean diet has been reported being relatively high, are rather scarce. The aim of this study was to test the association between consumption of total and specific types of nuts and metabolic status among adults living in Sicily, Southern Italy. Methods: Demographic and dietary characteristics of 2044 adults living in Southern Italy were analyzed. Multivariate logistic regression analyses were performed to calculate odds ratios (ORs) and 95% confidence intervals (CIs) of the association between nut consumption and…