Search results for "gas [argon]"
showing 10 items of 229 documents
Vēsture: Latvijas Universitātes Žurnāls, Nr.11/12
2021
Daudzveidīgu aktivitāšu nozīme angļu valodas apguves veicināšanā 5 gadīgiem bērniem
2017
Diplomdarba nosaukums: Daudzveidīgu aktivitāšu nozīme angļu valodas apguves veicināšanā 5 gadīgiem bērniem. Diplomdarba autore: Diāna Elizabete Makveja Diplomdarba zinātniskās vadītājs: Mg. paed. Sandra Kalniņa Diplomdarba saturs: 53 lpp, 10 attēli, 3 tabulas, 4 pielikumi, analizētas 65 literatūras vienības. Pētījuma mērķis: teorētiski izpētīt, pamatot un praktiski pārbaudīt daudzveidīgu aktivitāšu nozīmi angļu valodas apguves veicināšanā 5 gadīgiem bērniem. Diplomdarba teorētiskā daļa balstās uz vairāku autoru atziņām (Lieģeniece, 1999, Svence, 1999, Baltušīte, 2000, Cameron, 2001, Marcos, 2001, Piažē, 2002, Vigotskis, 2002, O’Grady, 2005,Vos, 2008, Ellis, 2008, Brice, 2013, Lang, 2014, Ch…
Proben von Schriftzügen liefländischen Urkunden und Handschriften vom J. [1300] bis zum J. 1561 sorgfältig zusam[m]en getragen und erläutert von Joha…
1799
18.gs. izskaņā J.K. Broce vienlaikus strādāja pie Rīgas rātes Iekšējā un Ārējā arhīva dokumentu norakstu pagatavošanas Rīgas rātes pasūtījumā (1786-1807) un pie vairākiem izrakstu un norakstu apkopojumiem savai kolekcijai, kam izejmateriālu deva dokumentu studijas kā Rīgas rātes arhīvā, tā Vidzemes bruņniecības arhīvā, baznīcu arhīvos, privātkolekcijās, muižu dokumentu krājumos. Šādi tapuši arī Broces manuskripti Sylloge diplomatum (2 sēj.), Diplomata Rigensia (4 sēj.,j LVVA, 8.f., 1.apr. 42. - 42c.l.), Abschriften seltener Urkunden (LVVA, 8.f., 1.apr., 46.l.) un arī hronoloģiski kārtots rokraksta paraugu - dokumentu faksimilnorakstu izvilkumu apkopojums Proben von Schriftzügen liefländisch…
Gedenkschrift zum 25-jährigen Jubiläum des Architektenvereins zu Riga, 1889-1914
1914
Gotiskajā šriftā
Successful treatment of a patient with ARDS after pneumonectomy using high-frequency oscillatory ventilation.
1999
High frequency oscillatory ventilation (HFOV) was used in a patient who developed the acute respiratory distress syndrome 5 days following a right pneumonectomy for bronchogenic carcinoma. When conventional pressure-controlled ventilation failed to maintain adequate oxygenation, HFOV dramatically improved oxygenation within the first few hours of therapy. Pulmonary function and gas exchange recovered during a 10-day period of HFOV. No negative side effects were observed. Early use of HFOV may be a beneficial ventilation strategy for adults with acute pulmonary failure, even in the postoperative period after lung resection.
Rates of carbon dioxide plume degassing from Mount Etna volcano,
2006
We report here on the real-time measurement of CO2 and SO2 concentrations in the near-vent volcanic gas plume of Mount Etna, acquired by the use of a field portable gas analyzer during a series of periodic field surveys on the volcano's summit. During the investigated period (September 2004 to September 2005), the plume CO2/SO2 ratio ranged from 1.9 to 10.8, with contrasting composition for Northeast and Voragine crater plumes. Scaling the above CO2/SO2 ratios by UV spectroscopy determined SO2 emission rates, we estimate CO2 emission rates from the volcano in the range 0.9-67.5 kt d-1 (average, 9 kt d-1). About 2 kt of CO2 were emitted daily on average during quiescent passive degassing, wh…
Gas emission strength and evolution of the molar ratio of BrO/SO2in the plume of Nyiragongo in comparison to Etna
2015
Airborne and ground-based differential optical absorption spectroscopy observations have been carried out at the volcano Nyiragongo (Democratic Republic of Congo) to measure SO2 and bromine monoxide (BrO) in the plume in March 2004 and June 2007, respectively. Additionally filter pack and multicomponent gas analyzer system (Multi-GAS) measurements were carried out in June 2007. Our measurements provide valuable information on the chemical composition of the volcanic plume emitted from the lava lake of Nyiragongo. The main interest of this study has been to investigate for the first time the bromine emission flux of Nyiragongo (a rift volcano) and the BrO formation in its volcanic plume. Mea…
Mauna Kea, Hawaii, as an Analog Site for Future Planetary Resource Exploration: Results from the 2010 ILSO-ISRU Field-Testing Campaign
2013
Within the framework of the International Lunar Surface Operation - In-Situ Resource Utilization Analogue Test held on January 27 - February 11, 2010 on the Mauna Kea volcano in Hawaii, a number of scientific instrument teams collaborated to characterize the field site and test instrument capabilities outside laboratory environments. In this paper, we provide a geological setting for this new field-test site, a description of the instruments that were tested during the 2010 ILSO-ISRU field campaign, and a short discussion for each instrument about the validity and use of the results obtained during the test. These results will form a catalogue that may serve as reference for future test cam…
Magma Degassing at Piton de la Fournaise Volcano
2015
Since about 1860 AD, magmatic gas release at Piton de la Fournaise volcano is very weak during intra-eruptive phases and essentially occurs during the relatively short-lived eruptions. Recent gas measurements performed during an eruption in October 2010, combined with detailed review of melt and fluid inclusion composition in magmas erupted over the past 50 kyrs, indicate that most PdF eruptions extrude magmas having variably degassed at shallow depth (P 1 kbar) and the shallow magmas, whose fluids are efficiently scrubbed by the hydrothermal system and the water table. Quantification of SO2 fluxes permits to track syn-eruptive magma ascent at shallow level (above sea level). Deeper exsolut…
Cost-benefit analysis: A comparison between conventional and organic olive growing in the Mediterranean Area
2015
The conversion from conventional to organic management of olive growing has many benefits, such as increase of biodiversity, reduction of soil erosion and lower environmental impact. Since olive represents a main crop in the Mediterranean area, from a social, economic as well as environmental point of view, the aim of this paper has been to determine if the conversion from conventional to organic olive growing can increase the profitability of the farmer in Sicilian farms. Economic analysis has been carried out by means of cost-benefit analysis and financial indicators (NPV, B0/C0, IRR) show that organic growing would allow a better profitability for organic olive farms respect to conventio…