Search results for "MS"
showing 10 items of 39361 documents
Ziņu portāla "Valmieras Ziņas" auditorijas lietošanas paradumi un apmierinājums
2021
Bakalaura darba „Ziņu portāla „Valmieras Ziņas” auditorijas lietošanas paradumi un apmierinājums” mērķis ir salīdzināt reģionālā ziņu portāla tēmu izvēli un redaktora skatījumu uz ziņu portāla saturu ar auditorijas lietošanas paradumiem un vēlmēm. Pētījuma gaitā tika izpētīts ziņu portāla saturs, kā arī noskaidrots ziņu portāla redaktora un ziņu portāla auditorijas viedoklis. Darba teorētiskajā daļā apkopots teorētiskais materiāls par digitālajiem medijiem, mediju dienaskārtību, mediju lietojuma un apmierinājuma teoriju, auditoriju, tās iedalījumu, apskatot tuvāk lokālo mediju un interneta mediju auditoriju. Empīriskajā daļā ar kontentanalīzes palīdzību pētīts ziņu portāla saturs un dienask…
Latvijas sabiedrisko un komerciālo mediju žurnālistu komunikācija mikroblogošanas vietnē Twitter un sociālajā tīklā Instagram
2016
Bakalaura darba tēma ir „Latvijas sabiedrisko un komerciālo mediju žurnālistu komunikācija mikroblogošanas vietnē Twitter un sociālajā tīklā Instagram”. Veiktā darba mērķis ir noskaidrot, kādi tvitera un instagrama lietotāji ir sabiedrisko mediju un komerciālo mediju žurnālisti un, kādi ir šo žurnālistu sociālo mediju lietošanas paradumi. Darbs ietver 7 nodaļas un 17 apakšnodaļas. Bakalaura darba teorētiskajā daļā apkopoti teorētiskie materiāli par sociālajiem medijiem, tviteri, instagramu, žurnālistiku, reklāmu sociālo mediju profilos, kā arī, par tvitera un instagrama ietekmi uz žurnālistu profesionālo darbību. Bakalaura darbā izmantotas divas pētniecības metodes – kontentanalīze un inter…
Hydrothermal methane fluxes from the soil at Lakki plain (Nisyros Island, Greece)
2013
Μετρήσεις φυσικής ροής μεθανίου και διοξειδίου του άνθρακα από το έδαφος πραγματοποιήθηκαν με τη μέθοδο συγκέντρωσης θαλάμου στην περιοχή Λακκί της Καλδέρας της Νισύρου, καλύπτοντας έκταση περίπου 0.06 km2 συμπεριλαμβάνοντας τις περιοχές Καμινάκια, Στέφανος και Αλέξανδρο όπου παρατηρείται έντονη ατμιδική δραστηριότητας. Οι τιμές ροής που μετρήθηκαν σε 77 σημεία κυμαίνονται από –3.4 μέχρι 1420 mg m-2 d-1 για το CH4 και από 0.1, μέχρι 383 g m-2 d-1 για το CO2. Στις τρεις ατμιδικές περιοχές παρουσιάζονται διαφορετικοί ρυθμοί διαφυγής μεθανίου, ιδίως στα Καμινάκια όπου προέκυψαν οι μεγαλύτερες τιμές ροής. Η εξερχόμενη ποσότητα μεθανίου εκτιμάται σε 0.01 t a-1 από μια έκταση περίπου 2500 m2 στον…
Genetic variability at αs2-casein gene in Girgentana dairy goat breed
2014
Casein genes are highly polymorphic and the high degree of variability has qualitative and quantitative effects on milk composition thereby affecting chemical, physical and technological properties of goat milk. The aim of this work was to evaluate the genetic polymorphisms of the αs2-casein (CSN1S2) gene in the endangered Girgentana dairy goat breed in order to assess the genotypes distribution, as it is known genotype influences technological and nutritional milk properties. The study was performed on 207 sample of Girgentana goat breed, analysed with different PCR protocols. The most frequent alleles was A (0.722), followed by F (0.225), C (0.051) and E (0.002) while B, D and 0 alleles w…
Profiling Dopamine-Induced Oxidized Proteoforms of β-synuclein by Top-Down Mass Spectrometry
2021
The formation of multiple proteoforms by post-translational modifications (PTMs) enables a single protein to acquire distinct functional roles in its biological context. Oxidation of methionine residues (Met) is a common PTM, involved in physiological (e.g., signaling) and pathological (e.g., oxidative stress) states. This PTM typically maps at multiple protein sites, generating a heterogeneous population of proteoforms with specific biophysical and biochemical properties. The identification and quantitation of the variety of oxidized proteoforms originated under a given condition is required to assess the exact molecular nature of the species responsible for the process under investigation…
Desymmetrization of Prochiral Cyclobutanones via Nitrogen Insertion: A Concise Route to Chiral γ‐Lactams
2021
Abstract Asymmetric access to γ‐lactams is achieved via a cyclobutanone ring expansion using widely available (1S,2R)‐1‐amino‐2‐indanol for chiral induction. Mechanistic analysis of the key N,O‐ketal rearrangement reveals a Curtin–Hammett scenario, which enables a downstream stereoinduction (up to 88:12 dr) and is corroborated by spectroscopic, crystallographic, and computational studies. In combination with an easy deprotection protocol, this operationally simple sequence allows the synthesis of a range of optically pure γ‐lactams, including those bearing all‐carbon quaternary stereocenters. In addition, the formal synthesis of drug molecules baclofen, brivaracetam, and pregabalin further …
The Use of Stable Isotope Ratio Analysis to Trace European Sea Bass (D. labrax) Originating from Different Farming Systems
2020
This study aimed to determine whether isotopic ratio mass spectrometry (IRMS) can discriminate farmed European sea bass according to different farming systems and geographic origins. Dicentrarchus labrax of commercial size from three different rearing systems (concrete tank inland, sea cages, and extensive methods in valleys or salt works) were collected at the trading period (autumn&ndash
On continua whose hyperspace of subcontinua is σ-locally connected
1999
Abstract We provide a structural characterization of all continua X whose hyperspace C ( X ) of all subcontinua is the countable union of Peano continua. Applying this result we prove that there exists a uniformly path connected continuum X with no continuous mapping from C ( X ) onto X.
Труды покойнаго Лифлядскаго губернатора М.А. Зиновьева
1906
Содержание: 1. Опыт изследования земского устройства Лифляндской губернии. 2. О квотвой земле
Search for scalar leptoquarks in pp collisions at $\sqrt{s}$=13 TeV with the ATLAS experiment
2016
An inclusive search for a new-physics signature of lepton-jet resonances has been performed by the ATLAS experiment. Scalar leptoquarks, pair-produced in pp collisions at s √s = 13 TeV at the large hadron collider, have been considered. An integrated luminosity of 3.2 fb-1, corresponding to the full 2015 dataset was used. First (second) generation leptoquarks were sought in events with two electrons (muons) and two or more jets. The observed event yield in each channel is consistent with Standard Model background expectations. The observed (expected) lower limits on the leptoquark mass at 95% confidence level are 1100 and 1050 GeV (1160 and 1040 GeV) for first and second generation leptoqua…