Search results for "Aga"

A photometric study of Be stars located in the seismology fields of COROT

2007

Context: In preparation for the COROT mission, an exhaustive photometric study of Be stars located in the seismology fields of the COROT mission has been performed. The very precise and long-time-spanned photometric observations gathered by the COROT satellite will give important clues of the origin of the Be phenomenon. Aims: The aim of this work is to find short-period variable Be stars located in the seismology fields of COROT and to study and characterise their pulsational properties. Methods: Light curves obtained at the Observatorio de Sierra Nevada together with data from Hipparcos and ASAS-3 of a total of 84 Be stars have been analysed in order to search for short-term variations. W…

Metody magazynowania zbóż do celów technologicznych

2017

Zboża stanowią główne źródło węglowodanów dla człowieka i zwierząt hodowlanych. Dlatego istotne jest zachowanie optymalnych warunków w trakcie łańcuch technologicznego. Ważnym etapem w produkcji rolnej jest magazynowanie. Celem pracy jest przedstawienie metod magazynowania zbóż o przeznaczeniutechnologicznym wykorzystywanych w przechowalnictwie. Obecnie podczas magazynowania zbóż wykorzystuje się trzy metody przechowywania: magazyny płaskie, silosy zbożowe oraz rękawy foliowe. Każdy z sposobów magazynowania ma zarówno zalety jak i wady. Magazyny płaskie wykorzystywane są do składowania dużych ilości zboża, ich obsługa w porównaniu do silosów zbożowych jest bardziej złożona. Trudniej sterowa…

Stato di eccezione e storia del diritto romano

2022

Il contributo si sofferma sull'uso della storia del diritto romano nella ricerca degli archetipi dello stato di eccezione e valuta criticamente, in particolare, le differenti ricostruzioni suggerite da Carl Schmitt e Giorgio Agamben.

Aizsarglietu stāstījumu folklora Latgalē (pēc 2018. un 2019. gada lauka pētījumu materiāliem)

2019

Bakalaura darba tēma ir “Aizsarglietu stāstījumu folklora Latgalē (pēc 2018. un 2019. gada lauka pētījumu materiāliem)”. Bakalaura darba mērķis bija noskaidrot, kas ir raksturīgs aizsarglietu stāstījumu folklorai Latgalē, kāda ir tās specifika, vai un kā ir transformējušās ar aizsarglietām saistītās latviešu tautas tradīcijas, salīdzinot ar latviešu folkloras materiālu. Darbs sastāv no ievada, trim nodaļām un, secinājumiem. Pirmajā nodaļā tika analizēti aizsarglietu stāstījumi, kas vēsta par mājas aizsardzību (māju, īpašumu aizsargājošiem augiem, ornamentālajām zīmēm, baznīcā svētītajām aizsarglietām), un tika noskaidroti aizsarglietu izmantošanas dažādie nolūki. Otrajā nodaļā tika raksturo…

Empire of the pun : The use of wordplay in the headlines and subheadings of Empire magazine

2009

 Sanaleikit ovat jokapäiväinen keino tavallisille ihmisille huvittaa niin toisiaan kuin itseäänkin, mutta sanaleikeillä on myös muita käyttömahdollisuuksia. Esimerkiksi eri mediat ovat ottaneet tavaksi käyttää sanaleikkejä muun muassa herättämään kiinnostusta sekä myymään tuotteita ja ideoita. Tämän tutkimuksen tarkoituksena oli hahmottaa numeerisesti sanaleikkien käyttöä elokuva-alan aikakauslehden Empiren otsikoissa ja alaotsikoissa, sekä pohtia syitä käyttötapoihin. Sanaleikkejä on tutkittu jonkin verran, mutta aiemmat tutkimukset ovat keskittyneet etenkin mainoksiin ja muuhun mediaan kuin aikakauslehtiin. Tutkimuksessa termiä sanaleikki käytettiin laajassa merkityksessä, ei pelkästään t…

Population transfer, light storage, and superluminal propagation by bright-state adiabatic passage.

2008

Drought Stress Study on Nicotiana tabacum L., “Baladi”, an In Vitro Experimental Model

2021

Crops drought tolerance is a trait of outmost importance for agriculture especially today when climate change is affecting more the production for food and feed. The scope of this article is to evaluate in vitro drought stress response of Nicotiana tabacum L., “Baladi”. The experiment was set up for four successive stages starting with in vitro seedling development, hypocotyl cultivation, three generations of micropropagation, pre-acclimatization and acclimatization. The effect of abscisic acid (ABA) and/or polyethylene-glycol 6000 (PEG) on tobacco hypocotyl caulogenesis and micropropagation were investigated. Superoxide-dismutases (SODs) and peroxidases (POXs) are more active and different…

Antibacterial Activity of Positively and Negatively Charged Hematite (α-Fe2O3) Nanoparticles to Escherichia coli, Staphylococcus aureus and Vibrio fi…

2021

This research and work has been supported by the European Regional Development Fund within the Activity 1.1.1.2 “Post-doctoral Research Aid” of the Specific Aid Objective 1.1.1 (i.e., “to increase the research and innovative capacity of scientific institutions of Latvia and the ability to attract external financing, investing in human resources and infrastructure”) of the Operational Programme “Growth and Employment” (No. 1.1.1.2/VIAA/2/18/331).

Engineered surface waves in hyperbolic metamaterials

2013

We analyzed surface-wave propagation that takes place at the boundary between a semi-infinite dielectric and a multilayered metamaterial, the latter with indefinite permittivity and cut normally to the layers. Known hyperbolization of the dispersion curve is discussed within distinct spectral regimes, including the role of the surrounding material. Hybridization of surface waves enable tighter confinement near the interface in comparison with pure-TM surface-plasmon polaritons. We demonstrate that the effective-medium approach deviates severely in practical implementations. By using the finite-element method, we predict the existence of long-range oblique surface waves. This research was fu…

Physiological and autonomic stress responses after prolonged sleep restriction and subsequent recovery sleep in healthy young men

2018

Purpose Sleep restriction is increasingly common and associated with the development of health problems. We investigated how the neuroendocrine stress systems respond to prolonged sleep restriction and subsequent recovery sleep in healthy young men. Methods After two baseline (BL) nights of 8 h time in bed (TIB), TIB was restricted to 4 h per night for five nights (sleep restriction, SR, n = 15), followed by three recovery nights (REC) of 8 h TIB, representing a busy workweek and a recovery weekend. The control group (n = 8) had 8 h TIB throughout the experiment. A variety of autonomic cardiovascular parameters, together with salivary neuropeptide Y (NPY) and cortisol levels, were assessed.…