Search results for "MAS"
showing 10 items of 18047 documents
Uzvārdu maiņa Latvijā 20.gs. sākumā (1921.-1927.g.)
2019
Vēsturiskās onomastikas maģistra darba „Uzvārdu maiņa Latvijā 20. gs. sākumā (1921–1927)” mērķis ir apzināt un analizēt laika posmā no 1921. gada līdz 1927. gadam mainītos uzvārdus, noskaidrot to daudzumu un etimoloģiski semantiskās grupas, izmantojot koncentrēto personvārdu klasifikāciju, lai izprastu uzvārdu maiņas tendences. Veicot pētījumu, ir apkopots noteiktā laika posma uzvārdu maiņu saraksts, kas izmantojams tālākai pētniecībai. Apzinot apstrādātos datus, ir izpētīts, ka biežāk mainīti faunas semantikas uzvārdi, bet, izvēloties jaunos uzvārdus, dota priekšroka floras un fizioģeogrāfiskas semantikas personvārdiem, tādējādi var secināt, ka vairāki faunas semantikas, kā arī personu rak…
Vīrieša tēla interpretācija Rūdolfa Blaumaņa novelēs
2015
Bakalaura darba “Vīrieša tēla interpretācija R. Blaumaņa novelēs” analizētas maskulīnās teorijas, noveles žanra attīstība un īpatnības, R. Blaumaņa literārās intereses un impulsi. Bakalaura darbā apkopotas maskulīnās teorijas, akcentējot tās nostādnes, kuras palīdz R. Blaumaņa radītā vīrieša tēla analīzē. Bakalaura darbā tiek noskaidrotas galvenās tendences vīrieša tēla atveidē R. Blaumaņa novelēs. Bakalaura darbā pētīta noveles žanra attīstība un īpatnības cauri gadsimtiem, akcentējot noveles attīstības tendences 19. gadsimta latviešu literatūrā. Bakalaura darbā sniegts ieskats R. Blaumaņa literārajās interesēs. Bakalaura darbā analizēts vīrieša tēls R. Blaumaņa novelēs, tā sociālais stāvo…
Karoliinien soturiarvot : kunnian hallitsema maailmankuva Ruotsin valtakunnassa 1700-luvun alussa
2011
Physico-Chemical Properties and Use of Waste Biomass-Derived Activated Carbons
2017
Physico-Chemical Properties and Use of Waste Biomass-Derived Activated Carbons
2017
Activated carbons are widely used in different industrial processes for example as adsorbents or as support materials. Advantageously these carbons can be prepared from residual or waste biomass materials. Different raw material type and activation procedure plays an important role in the physico-chemical characteristics of activated carbon e.g. surface area, porosity and pore distribution. In this study, activated carbon has been prepared from lignocellulosic waste materials (e.g. saw dust, lignin residue) and characterized by a number of methods. Further, adsorption properties of carbons were evaluated. Adsorption capacity of dyes and metals was high (methylene blue dye 86 % and zinc meta…
Catalytic hydrothermal liquefaction of municipal sludge in subcritical water
2021
In the last decades, the dwindling of the fossil sources of energy coupled with the growth of energy demand and of waste production prompted the research in developing novel industrial technologies for renewable energy production and waste valorization. Hydrothermal liquefaction (HTL) is a good alternative to transform wet biomasses as microalgae, macroalgae, agricultural residues, food waste, and municipal sludge (MS) into value-added products with high efficiency and decreasing the amounts that has to be disposed of. HTL takes place in an aqueous environment, without the energy cost of drying the biomass, at 300-400°C and pressure of 10-40 MPa [1,2]. At these operative conditions, an inte…
Diallyldimethylammonium Chloride (DADMAC) in Water Treated with Poly-Diallyldimethylammonium Chloride (PDADMAC) by Reversed-Phase Ion-Pair Chromatogr…
2023
Poly-diallyldimethylammonium (PDADMAC) chloride is a flocculant agent extensively used in water clarification treatments. Commercial polyelectrolyte formulations often contain residual monomer (DADMAC), reaction by-products and other reactants as contaminants that could potentially affect human health. In the present study, we optimized an analytical method based on reversed-phase ion-pair chromatography coupled with mass spectrometry for quantifying ultra-trace levels of DADMAC, without preliminary treatments, in drinking water distributed by the Palermo aqueduct. The method was validated in terms of accuracy (recovery between 80 to 120%), precision (RSD < 10%), linearity range (from 0.…
Few-body insights of multiquark exotic hadrons
2018
In this contribution we discuss the adequate treatment of the $4-$ and $5-$body dynamics within a constituent quark framework. We stress that the variational and Born-Oppenheimer approximations give energies rather close to the exact ones, while the diquark approximation might be rather misleading. Hall-Post inequalities provide very useful lower bounds that exclude possible stable states for some mass ratios and color wave functions.
Atmospheric circulation modulates the spatial variability of temperature in the Atlantic-Arctic region
2019
International audience; The Arctic region has experienced significant warming during the past two decades with major implications on the cryosphere. The causes of Arctic amplification are still an open question within the scientific community, attracting recent interest. The goal of this study is to quantify the contribution of atmospheric circulation on temperature variability in the Atlantic–Arctic region at decadal to intra‐annual timescales from 1951 to 2014. Daily 20th Century reanalyses geopotential height anomalies at 500 hPa were clustered into different weather regimes to assess their contribution to observed temperature variability. The results show that in winter, 25% of the warm…
Comunicación local y nuevos formatos periodísticos en Internet: cibermedios, confidenciales y weblogs
2008
El libro que aquí presentamos es el resultado más reciente de un esfuerzo colectivo que comenzó con la creación de un grupo de investigación, apoyado por la Universidad de Valencia, en torno al análisis de los medios digitales valencianos. Se trataba (y sigue tratándose, en buena medida) de un ámbito de investigación casi inexplorado. Pero desde un principio consideramos que su interés no sólo radicaba en su carácter ignoto, sino en la constatación de que el ecosistema comunicativo valenciano, y más en general el ámbito de la comunicación local vehiculada a través de Internet, había adquirido ya una madurez suficiente como para constituirse en ámbito de estudio por sí mismo, sin apoyarse en…