0000000000166418
AUTHOR
Anna Andersone
Distopijas motīvi Margaritas Perveņeckas romānā „Gaetāno Krematoss”
Bakalaura darbā pētītas literārās distopijas žanra teorētiskās nostādnes un tam raksturīgo motīvu (identitātes zuduma, pārspīlētas industrializācijas vai ekoloģiskas katastrofas rezultātā iznīcinātas dabas, tehnoloģiju dominances pār cilvēcisko u.c.) realizācija Margaritas Perveņeckas romānā „Gaetāno Krematoss”. Darba mērķis ir noskaidrot, kādi distopijas motīvi izmantoti romānā radītās mākslinieciskās fantāzijas pasaules uzbūvē un kā tie realizējas romāna žanram raksturīgajā poētikā, par pētījuma hipotēzi izvirzot pieņēmumu, ka romānā „Gaetāno Krematoss” tēlota postmoderna distopija ar kritiskās distopijas iezīmēm. Pētījuma rezultātā romānā fiksētas vairākas postmodernisma literatūrai un k…
Vladislava Nastavševa režija postdramatiskā teātra kontekstā
Maģistra darbs „Vladislava Nastavševa režija postdramatiskā teātra kontekstā” veltīts režisora Vladislava Nastavševa mākslinieciskās prakses izpētei, skatot to vācu teātra teorētiķa Hansa Tīsa Lēmana (Hans-Thies Lehmann) izvirzītās postdramatiskā teātra teorijas koordinātēs, kā arī divas nodaļas darbā veltot režisora darbības vērtējumam Antonēna Arto attīstīto Nežēlības teātra ideju un zilo jeb queer teorijas kontekstā. Kā analīzes objekts darbā izmantotas V. Nastavševa Latvijā un ārpus tās tapušās izrādes, kā arī paša režisora publiski paustie mākslinieciskie uzstādījumi un mērķi, kas aplūkoti viņa režijas prakses un jau nosaukto teorētisko diskursu gaismā. Postdramatiskajā teātrī, Nežēlīb…
Design of siliceous lignins – Novel organic/inorganic hybrid sorbent materials
Novel nanoporous lignin(lignocellulose)/SiO2 hybrid materials were designed using the sol–gel process. X-ray photoelectronic spectroscopy, Fourier transform infrared spectroscopy and 29Si and 13C nuclear magnetic resonance spectroscopy were applied to characterize the hybrids’ surface and bulk structure. Nitrogen and water vapor sorption were used for assessment of porous structure parameters and hydrophobization of matrices, respectively. The efficiency of the hybrid materials obtained was proved by adsorption tests with potential inorganic (Cu2+) and organic (2,4-dichlorophenoxyacetic acid) pollutants.
Elaboration and characterization of organic/inorganic hybrid nanoporous material incorporating Keggin-type Mo-Si polyanions
A novel nanoporous (pore size of 11 nm in average, BET surface area of 30 m2/g, pore volume of 300 mm3/g) hybrid inorganic-organic material was synthesized using the solid-phase interaction at room temperature of plant-originated phenylpropanoid polymer lignin and a Keggin-type heteropolyanion [SiMo12O40]4-. The partly reduction of Mo(VI) to Mo(V) and complexes formation between lignin and polyanion have been established by EPR, FT-IR and Raman spectroscopy. The XRD pattern and FT-IR spectrum of the hybrid material and indicates that [SiMo12O40]4- anion maintains the Keggin structure.
Thermal Decomposition and Combustion of Microwave Pre-Treated Biomass Pellets
The objective of the study was to investigate a more effective use of commercially available biomass pellets (wheat straw, wood, peat) using microwave pretreatment to improve heat production. Pellets were pretreated using the originally designed microwave torrefaction device. The effects of microwave (mw) pretreatment were quantified, providing measurements of the weight loss and elemental composition of pellets and estimating the effect of mw pretreatment on their porosity, surface area and calorific values at pretreatment temperatures of T = 448–553 K. Obtained results show that the highest structural variations and elemental composition during mw pretreatment were obtained for wheat stra…
Role of paramagnetic polyconjugated clusters in lignin antioxidant activity(in vitro)
Using physico-chemical methods (EPR, SEC, Py-GC/MS and UV/VIS spectroscopy) and wet chemical analysis, the characteristics of 6 hardwood lignins in terms of functionality, molecular weight and composition of lignin substructures were determined and considered together with the results of DPPH•, ABTS•+ and O2•− antioxidant assays with the aim to understand the relationships governing antioxidant properties of lignin. The strong positive linear correlation between lignin antioxidant capacity in the three assays used and the extent of conjugation of paramagnetic polyconjugated clusters in lignin macromolecules was found. The biological activity of the most active alkaline lignins was assessed …