Search results for "gas [meson]"
showing 10 items of 409 documents
Latvijas Vēstures Institūta Žurnāls. 2021, Nr. 1 (113)
2021
LU Latvijas vēstures institūta LU ilgtermiņa saistību izpilde 2020.-2022. g. ("Latvijas Vēstures Institūta Žurnāls")
Talsu kalendārs 1904. gadam
1903
Saturs: Vispārīgā daļa: Krievu ķeizariskais nams, dažādas svētku dienas, ievērojami notikumi, gadalaiki, mēness, saules grieži. Kalendārijs: zvejnieku, mednieku kalendārs, tirgi Kurzemē, Leišos, linu tirgi Vidzemē, Kurzemē. Citas ziņas: tabulas procentu aprēķināšanai, telegrāfa tarifs, svari un mēri, sludinājumi. Dzeja, proza, humors, dažādi raksti.
Talsu kalendārs 1905. gadam
1904
Saturs: Vispārīgā daļa: Krievu ķeizariskais nams, dažādas svētku dienas, ievērojami notikumi, gadalaiki, mēness, saules grieži. Kalendārijs: zvejnieku, mednieku kalendārs, tirgi Kurzemē, Leišos, linu tirgi Vidzemē, Kurzemē. Citas ziņas: tabulas procentu aprēķināšanai, telegrāfa tarifs, svari un mēri, sludinājumi. Dzeja, proza, humors, dažādi raksti.
Talsu kalendārs 1903. gadam
1902
Saturs: Vispārīgā daļa: Krievu ķeizariskais nams, dažādas svētku dienas, ievērojami notikumi, gadalaiki, mēness, saules grieži. Kalendārijs: zvejnieku, mednieku kalendārs, tirgi Kurzemē, Leišos, linu tirgi Vidzemē, Kurzemē. Citas ziņas: tabulas procentu aprēķināšanai, telegrāfa tarifs, svari un mēri, sludinājumi. Dzeja, proza, humors, dažādi raksti.
Talsu kalendārs uz 1907. gadu, kam ir 365 dienas
1906
Saturs: Vispārīgā daļa: Krievu ķeizariskais nams, pareizticīgo kalendārs, gada laiki, gada ceturkšņi, mēneša ceturkšņi, saules un mēness aptumšošanās. Kalendārijs: dažādi svētki, ārzemju valdnieki, mēri un svari, dievkalpošanas dienas, mednieku, zvejnieku kalendārs, lopu grūsnības, putnu perēšanas laiks, laiku starpība starp Pēterburgu un Baltiju, procentu aprēķināšana, nodokļi, pasts un telegrāfs, satiksme, iestādes Liepājā, Ventspilī, tirgi. Kalendārā arī proza, humors.
Los contextos del uso de marihuana en Latinoamérica y culturas juveniles urbanas en México
2005
La intención de éste trabajo es dar cuenta de los contextos sociales, políticos y cultu¬rales de América Latina, especialmente el caso de México, con respecto a la situación de la producción y el consumo de la marihuana. Se trabaja la hipótesis teórica de que los contextos nos ayudan a comprender las distintas prácticas sociales con su diversi¬dad de sentidos y significados que generan los usuarios y los públicos consumidores de este bien no sólo material sino desde su valor simbólico teniendo como referente los movimientos sociales. Dentro de los públicos usuarios nos interesa enfatizar al sector de los jóvenes, es decir, a las culturas juveniles urbanas o a las adscripciones identitarias …
Temporal dynamics of lung aeration determined by dynamic CT in a porcine model of ARDS
2001
We used dynamic CT to identify two different time constants of lung aeration and their individual contribution to the total increase in cross-sectional lung area in healthy and experimentally damaged lungs. In five healthy pigs, inflation and deflation between 0 and 50 cm H2O was imposed during dynamic (250 ms/image) CT acquisition, and repeated after experimental lung injury by saline lavage. The fractional areas of density ranges, which represent aerated lung parenchyma, were determined planimetrically, and their time for expansion during the manoeuvre was fitted using a bi-exponential model. Thus, two compartments, their sizes, i.e. their relative contributions to lung area aerated by th…
Quantification of atelectatic lung volumes in two different porcine models of ARDS.
2006
BACKGROUND: Cyclic recruitment during mechanical ventilation contributes to ventilator associated lung injury. Two different pathomechanisms in acute respiratory distress syndrome (ARDS) are currently discussed: alveolar collapse vs persistent flooding of small airways and alveoli. We compare two different ARDS animal models by computed tomography (CT) to describe different recruitment and derecruitment mechanisms at different airway pressures: (i) lavage-ARDS, favouring alveolar collapse by surfactant depletion; and (ii) oleic acid ARDS, favouring alveolar flooding by capillary leakage. METHODS: In 12 pigs [25 (1) kg], ARDS was randomly induced, either by saline lung lavage or oleic acid (…
Study of Selective Adsorption of Gases by Calorimetry
2013
This chapter is devoted to the study of coadsorption of gases in nanoporous solids by using the differential calorimetry. In the first part, the thermodynamic principles of adsorption of gases are recalled. Some of them have already presented in chapter one. However a special attention has been paid here to the determination of the adsorption enthalpies and entropies and we focused on the selective adsorption of binary mixtures. Then the specific experimental technique based on the combination of differential calorimetry with manometry and gas phase chromatography or mass spectrometry is shown in details. In the last part, the thermodynamic concepts on coadsorption are illustrated with expe…
Effect of pedalling rates on physiological response during endurance cycling
2001
International audience; This study was undertaken to examine the effect of different pedalling cadences upon various physiological responses during endurance cycling exercise. Eight well-trained triathletes cycled three times for 30 min each at an intensity corresponding to 80% of their maximal aerobic power output. The first test was performed at a freely chosen cadence (FCC); two others at FCC-20% and FCC +20%, which corresponded approximately to the range of cadences habitually used by road racing cyclists. The mean (SD) FCC, FCC-20% and FCC + 20% were equal to 86 (4), 69 (3) and 103 (5) rpm respectively. Heart rate (HR), oxygen uptake (VO2), minute ventilation (VE) and respiratory excha…