Search results for "Secondary"
showing 10 items of 1765 documents
Dynamical analysis of electron transport in RF cavities and photomultipliers tubes
2021
El objetivo de este trabajo es el estudio de la dinámica de haces y corrientes de electrones en cavidades aceleradoras de radiofrecuencia (RF) y en tubos fotomultiplicadores. Por una parte, los haces de electrones presentan una gran importancia histórica tanto en aplicaciones directas (televisiones, hornos de microondas, tratamiento del cáncer), como en la generación de radiación sincrotrón. La última generación de fuentes de rayos X muy brillantes se basa en los láseres de electrones libres (XFEL). No obstante, para producir los haces de electrones que emitirán dichos rayos X como radiación sincrotrón, se necesitan campos eléctricos de gran intensidad lo que produce que, debido a la emisió…
PROTEOMIC ANALYSIS OF AMYCOLATOPSIS BALHIMYCINA TO REVEAL NOVEL LINKS BETWEEN PRIMARY AND SECONDARY METABOLISM.
2007
The Role of Excited Oxygen Molecules in the Formation of the Secondary Ozone Layer at 87 to 97 km
2018
The secondary ozone layer is located at elevations of 87 to 97 km in the upper mesosphere – lower thermosphere. It overlaps with the ionospheric D-layer. Daytime intensive UV radiation is dissociating O2 molecules to O atoms and photoexcitating O2 molecules up to 11.07eV level. Ozone photolysis between the wavelengths of 118.7–121.6 nm produces three oxygen atoms from one ozone molecule. Collision reactions of O2(B3 Σu —) and O2(X3 Σg —, υ≥26) with O2(X3 Σg —, υ=0) produce additional oxygen atoms. The number of oxygen atoms is maintained at such a high level that a small but significant ozone concentration survives. UV radiation weakens radically during the night. The number of O atoms show…
Quale formazione iniziale per gli insegnanti di scuola secondaria dopo l’abolizione dei FIT?
2019
The article frames the general and specific competences initially requested to secondary school teachers, it identifies their constitutive pillars, it presents the most recent contributions on the professional competences of teachers, it makes a critical-problematic assessment of the issues being resolved in Italy and of those that are still open.
Reading Comprehension in Both Spanish and English as a Foreign Language by High School Spanish Students
2022
Several studies have highlighted that reading comprehension is determined by different linguistic skills: semantics, syntax, and morphology, in addition to one’s own competence in reading fluency (accuracy, speed, and prosody). On the other hand, according to the Linguistic Interdependence Hypothesis, linguistic skills developed in one’s own native language (L1) facilitate the development of these skills in a second one (L2). In this study, we wanted to explore the linguistic abilities that determine reading comprehension in Spanish (L1) and in English (L2) in Secondary Education students. To do this, 73 Secondary Education Students (1st and 3rd year) participated in this study. The student…
Dynamics of soil organic matter pools after agricultural abandonment
2014
Changes of land use from croplands to natural vegetation usually increase Carbon (C) stocks in soil. However, the contribution of old and new C to various pools still is not clearly analyzed.We measured the 13C signature of soil organic carbon (SOC) pools after vegetation change from vineyard (C3) to grassland (C4) under Mediterranean climate to assess the changes of old and new C in total SOC, microbial biomass (MB), dissolved organic C (DOC), and CO2 efflux from soil. Development of the perennial grass Hyparrhenia hirta (C4) on vineyard abandoned for 15 or 35 years ago increased C stocks for 13% and 16%, respectively (in the upper 15 cm). This increase was linked to the incorporation of n…
THE EVOLUTION OF THE SEWAGE TREATMENT PROCESS IN ROMANIA IN THE LAST 30 YEARS: CASE STUDY RÂMNICU VÂLCEA
2012
The evolution of the sewage treatment process in Romania in the last 30 years: case study Râmnicu Vâlcea. Most studies made at national level in the domain of hydrology target the surface water topic, analyzing the hydrometric and hydrologic characteristics and the quality of the water for certain catchment areas. This paper aims instead the relatively new field of urban hydrology, more exactly the urban wastewater treatment process. The study is based on the observations made in the first half of the year 2010 at the wastewater treatment plant from Râmnicu Vâlcea and on the analysis of some relevant wastewater quality indicators before and after the treatment process for the period between…
Kritisku gadījumu analīze 11. klases skolēnu pašrefleksijas prasmju attīstībā angļu valodas stundās
2016
Darba mērķis ir izpētīt, kā kritisku gadījumu analīze ir izmantojuma 11. klases angļu valodas (kā svešvalodas) stundās, lai veicinātu skolēnu pašrefleksijas prasmes. Pētījumā piedalījās divdesmit divi 11. Klases skolēni un viens skolotājs. Pētījums noformēts kā skolotāja portfolio. Darba praktiskā daļa pamatota ar teorētiskiem pētījumiem. Pētījumā nepieciešamie dati iegūti, veicot skolēnu aptaujas, individuālās un grupu intervijas, skolēnu pašrefleksijas žurnālu un analizējot skolēnu rakstiska atsauksmes. Lai attīstītu skolēnu pašrefleksijas prasmes un nosacījuma palīgteikumu (conditional phrases) lietojumu, pētījumā tika izmantota Flanagana (Flannagan, 1954) un Tripa (Tripp, 1993) attīstīt…
“Perhaps you remember...?” About students’ strategies of remembering the forgotten during secondary school final examination interviews
2019
The basic question I pose in this paper is the following: What language strategies are used by students who find it difficult to reproduce the content required during a secondary school final examination interviews? The text consists of four main parts. In the first part, on the basis of legal acts, I describe the formula of the new secondary school final examination in Polish, taking into account its purpose and course. In the second part, I focus my attention on one part of the oral exam – the final examinationinterview– seeing it as a species functioning in the educational discourse. The third part contains the results of the analysis of the questions asked to the students during the sec…