Search results for "abs"
showing 10 items of 6504 documents
Desarrollo de metodologías sostenibles de análisis
2017
Uno de los retos actuales en la Química Analítica reside en el desarrollo de metodologías analíticas sostenibles que respeten los principios planteados por la Química Verde, de manera su impacto sobre el entorno sea mínimo. Para conseguir este objetivo se han establecido diferentes estrategias o líneas de investigación. En primer lugar, las técnicas de microextracción están aportando numerosas ventajas, aunque todavía presentan algunas limitaciones. Por consiguiente, resulta necesario desarrollar técnicas que automaticen la etapa relativa al pretratamiento de la muestra con el fin de disminuir tanto el tiempo de análisis como la manipulación de la muestra. En segundo lugar, y atendiendo a l…
Abstraktā ekspresionisma izmantošana audzēkņu radošās darbības veicināšanai mākslas skolā
2020
Diplomdarba tēma ir “Abstraktā ekspresionisma izmantošana audzēkņu radošās darbības veicināšanai mākslas skolā”, to izstrādāja Madara Mežzīle. Darba autores mērķis ir teorētiski noskaidrot un praktiski pārbaudīt audzēkņu radošās darbības veicināšanas iespējas mācību tēmas “Abstraktais ekspresionisms” ietvaros vizuāli plastiskajās mākslas nodarbībās 4.-6. klasē. Diplomdarbs sastāv no ievada, iztirzājuma, kurā ietilpst piecas daļas, secinājumiem, izmantotās literatūras un avotu saraksta, divdesmit viena pielikuma. Ievadā tiek izvirzīts diplomdarba mērķis, uzdevumi un metodes. Iztirzājuma pirmajā daļā tiek izpētīti abstraktā ekspresionisma kustības aizsākumi, kā arī raksturīgās iezīmes, nozīmī…
Strongly Coupled Coherent Phonons in Single-Layer MoS 2
2019
We present a transient absorption setup combining broadband detection over the visible-UV range with high temporal resolution ($\sim$20fs) which is ideally suited to trigger and detect vibrational coherences in different classes of materials. We generate and detect coherent phonons (CPs) in single layer (1L) MoS$_2$, as a representative semiconducting 1L-transition metal dichalcogenide (TMD), where the confined dynamical interaction between excitons and phonons is unexplored. The coherent oscillatory motion of the out-of-plane $A'_{1}$ phonons, triggered by the ultrashort laser pulses, dynamically modulates the excitonic resonances on a timescale of few tens fs. We observe an enhancement by…
Rédiger pour être publié ! 2e édition 2012
2012
Publish or perish. This saying clearly exemplifies that science communication is vital for scientists, research bodies and nation competitiveness. Nowadays both computers and internet have deeply changed the way scientific articles are written and published. In an editorial world moving at accelerated pace, scientists are eager to get their papers published in the best journals because impact factors are ruling careers and funding. Since fundings are provided by various public and private bodies, scientific papers should be partly understandable by a wide audience from journalists to entrepreneurs, political leaders and the general public. However, as an editor of scientific journals, I obs…
KOSMOS 2017 Peru Side Experiment: nutrients, phytoplankton abundances, enzyme rates, photophysiology
2022
This data was collected during an short-term incubation experiment in March 2017 that investigated the response of a surface plankton community to upwelling. This experiment was carried in the framework of the SFB754-funded KOSMOS mesocosm study that took place in La Punta, Callao, Peru between February-April 2017. A total of six different treatments were used to disentangle chemical and biological characteristics of deep water that influence surface plankton blooms: 2 different deep water sources with different nutrient concentrations; 3 treatments to distinguish the effects of inorganic nutrients, organic nutrients and deep water microbial populations. Measured variables include inorganic…
“Relative priority rule” e diritti dei soci nel concordato preventivo in continuità
2022
La codificazione di nuove regole di possibile distribuzione del valore ritraibile dall’impresa in crisi oggetto di ristrutturazione fra i creditori – e non solo fra questi, venendo ora in gioco anche una nuova disciplina delle possibili attribuzioni ai soci – è una delle più rilevanti innovazioni introdotte con l’entrata in vigore del Codice della crisi di impresa e di insolvenza, come novellato dal d.gs. 17 giugno 2022, n. 83, in attuazione della Direttiva (UE) 2019/1023. Il lavoro ripercorre la genesi e lo sviluppo di tali regole nell’orizzonte statunitense e poi in quello europeo, per poi tornare alla recente disciplina italiana in esame, con particolare attenzione al trattamento dei soc…
Photocycle of point defects in highly- and weakly-germanium doped silica revealed by transient absorption measurements with femtosecond tunable pump.
2022
AbstractWe report pump-probe transient absorption measurements addressing the photocycle of the Germanium lone pair center (GLPC) point defect with an unprecedented time resolution. The GLPC is a model point defect with a simple and well-understood electronic structure, highly relevant for several applications. Therefore, a full explanation of its photocycle is fundamental to understand the relaxation mechanisms of such molecular-like systems in solid state. The experiment, carried out exciting the sample resonantly with the ultraviolet (UV) GLPC absorption band peaked at 5.1 eV, gave us the possibility to follow the defect excitation-relaxation dynamics from the femto-picosecond to the nan…
Nanokristāliskā itrija oksīda lokālās struktūras pētījumi
2017
Darbā tiek pētīta nanokristāliskā (2 – 50 nm) itrija (III) oksīda (Y2O3) lokālā struktūra, izmantojot dažādas eksperimentālās (rentgenstaru difrakcijas, Ramana spektroskopijas, caurejošās elektronu mikroskopijas, rentgenabsorbcijas spektroskopijas) un teorētiskās (klasiskās molekulārās dinamikas (CMD) un apgrieztās Monte-Karlo (RMC)) metodes. Rentgenabsorbcijas spektri, kas satur informāciju par materiāla lokālo struktūru, tika iegūti izmantojot sinhrotrono starojumu. Iegūtie spektri tika interpretēti, veicot teorētiskos aprēķinus uz superdatora. Darbā tiek analizēti materiālu lokālo struktūru raksturojošie lielumi atkarībā no nanodaļiņu izmēra. Salīdzinot CMD un RMC iegūtos rezultātus, tie…
Scientific writing for impact factor journals
2013
EASARCICAPLivre dispo. dans :hal-00832739, version 1; Publish or Perish. This old adage illustrates the importance of scientific communication; essential to research, it also represents a strategic sector for each country’s competitiveness. An often-neglected topic, scientific communication is of vital importance, with new information technologies accelerating and profoundly changing how knowledge is disseminated. The necessity of optimally disseminating experts’ findings has also become crucial to researchers, institutes and universities alike, which has prompted the recent advent of Impact Factors for the evaluation and financing of research, the goal being for scientific knowledge to be …
The 18th-century traditions of representation in a new age of revolution : History politics in the Swedish and Finnish parliaments, 1917−1919
2014
What happened to shared historical experiences in the discursive processes of constitutional reform in Sweden and Finland? This article examines the use of 18th-century history in early 20th-century politics. Building on a long-term survey of Swedish and Finnish estate and parliamentary debates, it analyses the political implications of differing national historiographies in the two successor states of the 18th-century Swedish realm, focusing on how the ancient past and collective (and often selective) memories of the Age of Absolutism, the Age of Liberty and the Gustavian Age were used by parliamentarians in constitutional debates. The analysis demonstrates how the Finnish polity continued…