Search results for "ADS"
showing 10 items of 1953 documents
Keegelmuisch pagasta teesas sehzhu protokoli no 1850. lihdz 1862. gadam [Kieģeļmuižas pagasta tiesas sēžu protokoli ...]
1850
Manuskripts rokrakstā.
Un modelo de enseñanza de la modelización para trabajar las funciones elementales con el uso de datos reales y tabletas
2018
In this study, we analyse the students’ performances while working on a teaching material that is designed to study some families of functions, through the mathematical modelling of physical phenomena and the use of iPads. This study is done following the theoretical and methodological framework of the Local Theoretical Models. Our research aim is to develop a Local Theoretical Model and to collect, analyse and explain the students' performances when they work in a teaching model that takes into account the use of technology and the incorporation of an analysis of the qualitative properties of the phenomena and the families of functions in the teaching material itself. A study of a group an…
Memorands jaunbūvējamās dzelzceļu līnijas Rīga-Ērgļi-Kārsava posma Ērgļi-Madona lietā
1934
Mašīnraksta kopija
Influence de la symétrie et de la taille de la molécule adsorbée sur le processus d'adsorption des composés éthyléniques sur une zéolithe de topologi…
2005
This manuscript lies within the scope of the understanding of the stepped isotherm observed during adsorption, on MFI zeolites, of some organic compounds which have a similar size to that of the pore opening of zeolite. During this work, the process of adsorption of ethylene and tetramethylethylene is initially studied by gravimetry and then by in situ infrared spectroscopy. This last technique enables to follow simultaneously the modifications of the adsorbent and the adsorbate. The analysis of these data lets suppose that the step in adsorption isotherm can be explained by taking account simultaneously of the symmetry and the size of the admolecule. In addition to the infrared bands chara…
Efficacy of an internet-based psychological intervention for problem gambling and gambling disorder: study protocol for a randomized controlled trial
2021
Gambling Disorder is a prevalent non-substance use disorder, which contrasts with the low number of people requesting treatment. Information and Communication Technologies (ICT) could help to enhance the dissemination of evidence-based treatments and considerably reduce the costs. The current study seeks to assess the efficacy of an online psychological intervention for people suffering from gambling problems in Spain. The proposed study will be a two-arm, parallel-group, randomized controlled trial. A total of 134 participants (problem and pathological gamblers) will be randomly allocated to a waiting list control group (N = 67) or an intervention group (N = 67). The intervention program i…
ROLE OF SMADS IN REMODELLING OF THE LARGE AIRWAYS IN PATIENTS WITH COPD.
2011
Aromātisko sveču un smaržkociņu degšanas rezultātā izdalīto aerosolu daļiņu analīze
2018
Blūma I., zinātniskā vadītāja Dr.ķīm., doc. Osīte A. Maģistra darbs, 66 lappuses, 30 attēli, 24 tabulas, 87 literatūras avoti, 7 pielikumi. Latviešu valodā.Maģistra darbā izskatīta literatūra par aromātisko sveču un smaržkociņu izdalīto aerosolu radīto piesārņojumu iekštelpās un iespējamo kaitējumu cilvēku veselībai. Apskatītas smalko aerosolu daļiņu kvalitatīvas un kvantitatīvas analīzes iespējas, to frakcionēšana un adsorbcija uz cieta adsorbenta. Darbā ievāktas un analizētas aromātisko sveču un smaržkociņu dedzināšanas rezultātā izdalītās aerosolu daļiņas. Noteiktas aerosolu daļiņu un slāpekļa oksīdu masas koncentrācijas paraugu dedzināšanas laikā.
Upgrading landfill gas using a high pressure water absorption process
2014
Abstract The upgrading of landfill gas (methane 54.2 ± 2.0%, carbon dioxide 42.1 ± 2.4% and nitrogen 3.7 ± 1.2%) was studied with a pilot-scale high pressure water absorption system consisting of absorption, desorption and gas drying units. The gas was upgraded in two phases and with two absorption columns operating in sequence in pressures up to 180 bar, and with initial pressures of 8 and 10 bar. This type of high pressure process, where water is used for increasing the gas pressure, does not need a separate compression unit to produce the gas pressure required by gas vehicles. Product gas with a methane contents ranging from 83.0% to 92.1% was achieved with differing process parameters, …
The vibrational levels of methane obtained from analyses of high-resolution spectra
2006
International audience; Methane and its tetrahedral isotopologues are spherical-top molecules whose high-resolution rovibrational spectra can only be analyzed in detail, thanks to sophisticated symmetry-adapted tensorial models. However, the effective Hamiltonian parameters of such models do not give direct access to the positions of the vibrational sublevels. In this paper, we present a calculation of the vibrational level positions for 12CH4, 13CH4, 12CD4 and 13CD4 performed using the effective Hamiltonian parameters obtained through recent analyses. We also include the results of a re-analysis of the octad system of 12CH4 performed with a higher order of the development which slightly im…
Study of water adsorption and capillary bridge formation for SiO(2) nanoparticle layers by means of a combined in situ FT-IR reflection spectroscopy …
2014
Water adsorption and capillary bridge formation within a layer of SiO2-nanoparticles were studied in situ by means of a combination of quartz crystal microbalance (QCM-D) with dissipation analysis and Fourier transformation infrared reflection absorption spectroscopy (FT-IRRAS). FT-IR data were employed to distinguish the “ice-like” and “liquid-like” contributions and to support the analysis of the QCM-D data concerning mass change and dissipation. Combined measurements show that for SiO2-nanoparticles with a diameter of about 250 nm, the formation of two adsorbed monolayers of water as well as bulk water leads to a rather linear increase in the dissipation for relative humidity values of u…