Search results for "IBA"
showing 10 items of 1355 documents
Effect of crosslinking strategy on the biological, antibacterial and physicochemical performance of hyaluronic acid and ɛ-polylysine based hydrogels
2022
The design of multifunctional hydrogels based on bioactive hyaluronic acid (HA) and antibacterial cationic polymer ε-poly-L-lysine (ε-PL) is a promising tool in tissue engineering applications. In the current study, we have designed hyaluronic acid and ε-polylysine composite hydrogel systems with antibacterial and cell attractive properties. Two distinct crosslinking approaches were used: the physical crosslinking based on electrostatic at- tractions and the chemical crosslinking of charged functional groups (-NH2 and -COOH). The impact of the crosslinking strategy on fabricated hydrogel molecular structure, swelling behavior, gel fraction, morphology, porosity, visc…
Change of the vortex core structure in two-band superconductors at the impurity-scattering-driven s±/s++ crossover
2017
We report a nontrivial transition in the core structure of vortices in two-band superconductors as a function of interband impurity scattering. We demonstrate that, in addition to singular zeros of the order parameter, the vortices there can acquire a circular nodal line around the singular point in one of the superconducting components. It results in the formation of the peculiar ``moat''-like profile in one of the superconducting gaps. The moat-core vortices occur generically in the vicinity of the impurity-induced crossover between ${s}_{\ifmmode\pm\else\textpm\fi{}}$ and ${s}_{++}$ states.
Skyrmion formation due to unconventional magnetic modes in anisotropic multiband superconductors
2018
Multiband superconductors have a sufficient number of degrees of freedom to allow topological excitations characterized by Skyrmionic topological invariants. In the most common, clean s-wave multiband, systems the interband magnetic coupling favours composite vortex solutions, without a Skyrmionic topological charge. It was discussed recently that certain kinds of anisotropies lead to hybridisation of the interband phase difference (Leggett) mode with magnetic modes, dramatically changing the hydromagnetostatics of the system. Here we report this effect for a range of parameters that substantially alter the nature of the topological excitations, leading to solutions characterized by a nontr…
Antibakteriālo līdzekļu patēriņš un tā izmaiņas Latvijas slimnīcās
2013
Elektroniskā versija nesatur pielikumus
Bidens tripartita fitoķīmiskais izvērtējums
2019
Bidens Tripartita fitoķīmiskais izvērtējums. Kokina K., zinātniskais vadītājs Mg. chem., pētniece Valkovska V. Bakalaura darbs, 35 lappuses, 39 attēli, 15 tabulas, 32 literatūras avoti, 2 pielikumi. Latviešu valodā. Literatūras apskatā ir aprakstīts trejdaivu sunīšu (Bidens Tripartita) bioloģiskais raksturojums, to īpašības un fitoķīmiskais sastāvs. Darbā ir veikta tējas “Trejdaivu sunīša tēja NATEJA” analīze. Tējai ir noteikta antibakteriālā aktivitāte pret gram-pozitīāam un gram-negatīvām baktērijām. Analizēts fitoķīmiskais sastāvs, izmantojot augstas efektivitātes šķidrumu hromatogrāfiju un masspektrometriju. Iegūtie rezultāti ir salīdzināti ar zinātniskajā literatūrā pieejamo informācij…
Experimental Studies on the Influence of Surfactants on Intestinal Absorption of Drugs Cefadroxil as model drug and sodium taurocholate as natural mo…
2011
The influence of the natural bile acid surfactant sodium taurocholate (CAS 81-24-3) on colic and duodenal (i.e. the proximal third of the small intestine) absorption of cefadroxil (CAS 50370-12-2) was studied using the in situ rat gut technique, and compared with the effect of sodium lauryl sulfate (CAS 151-21-3), the most widely used synthetic anionic surfactant. Previously, the stability, compatibility, and micelle-solubilization characteristics of taurocholate were assessed in order to correct, when necessary, the absorption results. White the passive absorption rate constants (kf, h-1) determined in colon in the presence of increasing lauryl sulfate concentrations showed an asymptotic v…
<p class="HeadingRunIn"><strong>The genus <em>Uracrobates</em> (Acari, Oribatida, Mochlozetidae)</strong></p>
2015
Uracrobates (Parauracrobates) truncatus sp. nov. is proposed, based on specimens from soil in Nepal. Parauracrobates subgen. nov. is distinguishable from subgenus Uracrobates by the notogaster truncated posteriorly (versus conical). An identification key to known taxa in the genus Uracrobates is given.
The armoured mite fauna (Acari: Oribatida) from a long-term study in the Scots pine forest of the Northern Vidzeme Biosphere Reserve, Latvia
2014
In 1992-2012, a considerable amount of soil micro-arthropods has been collected annually as a part of a project of the National Long-Term Ecological Research Network of Latvia at the Mazsalaca Scots Pine forest sites of the North Vidzeme Biosphere Reserve. Until now, the data on oribatid species have not been published. This paper presents a list of oribatid species collected during 21 years of ongoing research in three pine stands of different age. The faunistic records refer to 84 species (including 17 species new to the fauna of Latvia), 1 subspecies, 1 form, 5 morphospecies and 18 unidentified taxa. The most dominant and most frequent oribatid species are Oppiella (Oppiella) nova, Tecto…
"Come s’uno schermo". Partecipazione a distanza, efficienza, garanzie, upgrade tecnologici
2018
La nuova disciplina della partecipazione a distanza, introdotta dalla l. n. 103 del 2017, segna una svolta profonda nelle sintassi delle garanzie partecipative: la previsione, per default, di una modalità di aula giudiziaria “estesa” per lo svolgimento di ogni atto che comporti, a qualsiasi titolo, la partecipazione di soggetti in status custodiae per delitti particolarmente gravi muta in profondità le soglie qualitative dei modelli interrelazionali delle procedure giudiziarie e delle correlative garanzie. Il contributo si sofferma sulle risorse tecnologiche oggi adoperate nelle videoconferenze giudiziarie, avendo cura di raffrontarle con le ben più avanzate tecnologie già oggi disponibili …
«Come s’uno schermo». Partecipazione a distanza, efficienza, garanzie, upgrade tecnologici
2018
La nuova disciplina della partecipazione a distanza, introdotta dalla l. n. 103 del 2017, segna una svolta profonda nelle sintassi delle garanzie partecipative: la previsione, per default, di una modalità di aula giudiziaria “estesa” per lo svolgimento di ogni atto che comporti, a qualsiasi titolo, la partecipazione di soggetti in status custodiae per delitti particolarmente gravi muta in profondità le soglie qualitative dei modelli interrelazionali delle procedure giudiziarie e delle correlative garanzie. Il contributo si sofferma sulle risorse tecnologiche oggi adoperate nelle videoconferenze giudiziarie, avendo cura di raffrontarle con le ben più avanzate tecnologie già oggi disponibili …