Search results for "Mphi"
showing 10 items of 626 documents
Original data for article: Visible Implant Elastomer (VIE) success in early larval stages of a tropical amphibian species
2020
Animals are often difficult to distinguish at an individual level, but being able to identify individuals can be crucial in ecological or behavioral studies. In response to this challenge, biologists have developed a range of marking (tattoos, brands, toe-clips) and tagging (PIT, VIA, VIE) methods to identify individuals and cohorts. Animals with complex life cycles are notoriously hard to mark because of the distortion or loss of the tag across metamorphosis. In frogs, few studies have attempted larval tagging and none have been conducted on a tropical species. Here, we present the first successful account of VIE tagging in early larval stages (Gosner stage 25) of the dyeing poison frog (D…
L’anfiteatro romano di Londinium
2011
L'anfiteatro era un edificio importante di epoca romana. Le rovine sono state scoperte solo nel 1988, quando costruttori stavano effettuando scavi per la nuova galleria d'arte. Gli archeologi hanno a lungo sospettato che la città romana di Londinium avesse un anfiteatro, ma come afferma Jenny Hall, curatrice del Museo di Londra "stavamo cercando al di fuori delle mura della città e questo anfiteatro, insolitamente, si trovava invece all'interno delle mura della città". le rovine della struttura sono stati ben conservate e musealizzate in situ, e si possono ancora vedere i resti delle mura originali, il sistema di drenaggio, e perfino la sabbia dell'arena. The amphitheatre was an important b…
L'anfiteatro di Sabratha: vecchie indagini e nuove ricerche
2012
L’Anfiteatro di Sabratha, ignorato dai viaggiatori del XVIII e XIX secolo, venne segnalato nel 1912 da Henri Méhier de Mathuisieulx ed indagato da Renato Bartoccini a partire dal 1924. Gli scavi e le ricerche portate avanti in quegli anni permisero di rimettere in luce gran parte del monumento, che rimase tuttavia non pubblicato. Recenti scavi e ricerche hanno adesso permesso di redigere un nuovo rilievo ed un nuovo studio del monumento. Il grande edificio, realizzato in conci di calcarenite locale, venne costruito sfruttando una cava di pietra alla periferia orientale della città antica probabilmente alla metà circa del II secolo d.C. e, contrariamente a quanto finora ritenuto, venne effet…
Myo-inositol counteracts the vegetalizing effect of lithium on P.lividus embryos
1992
Abstract The vegetalizing effect of LiCl on sea urchins embryos can be counteracted by the addition of myo-inositol. This observation is discussed in connection with similar results recently reported for amphibian embryos.
A metal-responsive interdigitated bilayer for selective quantification of mercury( ii ) traces by surface plasmon resonance
2016
Reusable surface plasmon resonance chips allowing the quantitative and selective detection of mercury(II) ions in water at the 0.01 nM level are reported. The surface-modified gold sensor consists of a rarefied self-assembled monolayer of octanethiol topped with a Langmuir–Blodgett monolayer of an amphiphilic and highly-specific chelator. The interdigitated architecture confers to the bilayer a high packing density, surface coverage, and binding-group accessibility.
Bezastaino abinieku Anura sugu sastāvs un izplatība pilsētvides ūdenstilpēs Daugavpilī
2022
Mūsdienās abinieki pasaulē ir viena no visvairāk apdraudētām dzīvnieku klasēm. Visos pasaules reģionos ir konstatēta īpatņu skaita samazināšanās vai pilnīga izzušana. Abinieku izmiršanas cēloņi ir dažādi – biotopu pārveidošana, klimata izmaiņas, kā arī sēnīšu Batrachochytrium dendrobatidis izraisīta slimība. Abinieku izzušana ir skaidri redzama pateicoties bezastainajiem abiniekiem, jo tos var viegli gan ieraudzīt, gan saklausīt. Diemžēl šī problēma varētu skart arī Latvijas abiniekus. Bakalaura darba mērķis ir noteikt, kādas bezastaino abinieku sugas ir sastopamas Daugavpils ūdenstilpēs, kā arī noteikt aptuveno populācijas lielumu, pamatojoties uz pieaugušo varžu un krupju tēviņu dziesmu i…
Influence of bacterial physiology on processing of selenite, biogenesis of nanomaterials and their thermodynamic stability
2019
We explored how Ochrobactrum sp. MPV1 can convert up to 2.5 mM selenite within 120 h, surviving the challenge posed by high oxyanion concentrations. The data show that thiol-based biotic chemical reaction(s) occur upon bacterial exposure to low selenite concentrations, whereas enzymatic systems account for oxyanion removal when 2 mM oxyanion is exceeded. The selenite bioprocessing produces selenium nanomaterials, whose size and morphology depend on the bacterial physiology. Selenium nanoparticles were always produced by MPV1 cells, featuring an average diameter ranging between 90 and 140 nm, which we conclude constitutes the thermodynamic stability range for these nanostructures. Alternativ…
Iron oxide superparamagnetic nanocarriers bearing amphiphilic N-heterocyclic choline analogues as potential antimicrobial agents
2015
Magnetic nanoparticles represent an advanced tool in biomedicine because they can be simultaneously functionalized and guided using a magnetic field. Iron oxide magnetic nanoparticles precoated with oleic acid and bearing novel antimicrobial N-heterocyclic choline analogues, namely O-, N- and O,N-bis-undecyl-substituted N-(2-hydroxyethyl)-1,2,3,4-tetrahydroisoquinolinium derivatives, have been obtained as potential biomedical agents for drug delivery and antimicrobial therapy. Structural and size determinations for the novel synthesized magnetic nanosystems were carried out based upon magnetogranulometry, dynamic light-scattering measurements and X-ray diffraction analysis. The most expecte…
A comparative meta-analysis of TEMPS scores across mood disorder patients, their first-degree relatives, healthy controls, and other psychiatric diso…
2016
Background The Temperament Evaluation Memphis, Pisa, Paris and San Diego Auto-questionnaire (TEMPS) is validated to assess temperament in clinical and non-clinical samples. Scores vary across bipolar disorder (BD), major depressive disorder (MDD), attention-deficit/hyperactivity disorder (ADHD), borderline personality disorder (BPD) and healthy controls (HCs), but a meta-analysis is missing. Methods Meta-analysis of studies comparing TEMPS scores in patients with mood disorders or their first-degree relatives to each other, or to a psychiatric control group or HCs. Results Twenty-six studies were meta-analyzed with patients with BD (n= 2025), MDD (n=1283), ADHD (n=56) and BPD (n=43), relati…
Docetaxel-Loaded Nanoparticles Assembled from β-Cyclodextrin/Calixarene Giant Surfactants: Physicochemical Properties and Cytotoxic Effect in Prostat…
2017
Giant amphiphiles encompassing a hydrophilic β-cyclodextrin (βCD) component and a hydrophobic calix[4]arene (CA4) module undergo self-assembly in aqueous media to afford core-shell nanospheres or nanocapsules, depending on the nanoprecipitation protocol, with high docetaxel (DTX) loading capacity. The blank and loaded nanoparticles have been fully characterized by dynamic light scattering (DLS), ζ-potential measurements and cryo-transmission electron microscopy (cryo-TEM). The data are compatible with the distribution of the drug between the nanoparticle core and the shell, where it is probably anchored by inclusion of the DTX aromatic moieties in βCD cavities. Indeed, the release kinetics …