Search results for "Ada"
showing 10 items of 10244 documents
Personības aptaujas “Starptautiskā personības pantu kopuma (IPIP-50) Lielā Piecinieka marķieri” adaptācija latviešu valodā
2019
Pētījuma mērķis bija veikt IPIP-50-BFM aptaujas adaptāciju latviešu valodā. Tika izvirzīti pētījuma jautājumi par IPIP-50-BFM aptaujas latviešu versijas atbilstību aptaujas oriģinālajiem psihometriskajiem rādītājiem: iekšējai saskaņotībai, pantu reakcijas un diskriminācijas indeksiem un konstrukta (konverģentās) validitātes kritērijiem. Pētījumā piedalījās 204 respondenti (132 sievietes un 72 vīrieši) vecumā no 18 līdz 76 gadiem (M=37,66, SD=12,40). Dati no respondentiem tika ievākti gan frontāli, gan arī interneta vidē. Pētījumā tika adaptēta IPIP-50 Lielā Piecinieka marķiera aptauja (50-item IPIP Big Five Markers, IPIP-BFM-50; Goldberg, 1999). Aptaujas adaptēšanai tika izmantota Lielā Pie…
New Evidence of the Enhanced Elimination of a Persistent Drug Used as a Lipid Absorption Inhibitor by Advanced Oxidation with UV-A and Nanosized Cata…
2019
This work demonstrates new evidence of the efficient destruction and mineralization of an emergent organic pollutant using UV-A and titanium nanosized catalysts. The target compound considered in this work is the primary metabolite of a lipid regulator drug, clofibrate, identified in many studies as refractory during conventional wastewater treatment. The photocatalytic performance study was carried out in batch mode at laboratory scale, in aqueous suspension. Kinetic data showed that titanium dioxide P25 Aeroxide® exhibits the highest photocatalytic efficiency compared to the other investigated catalysts. Pollutant degradation and mineralization efficiencies strongly increased when decreas…
A software receiver adaptive phase lock loop method
2009
The aim of this paper is to introduce a new and relatively simple algorithm which is capable to tune the parameters of the loop filter in a phase lock loop, like the one that can be found in a global navigation satellite system receiver. The parameters are chosen while the system is running, in order to make the bandwidth of the filter adaptive with respect to the signal dynamic and strength. A wider bandwidth is obtained to make the filter more reactive when searching the carrier, while the bandwidth gets narrower when the system is in the tracking state, in order to cut off as much noise as possible. The algorithm is based on the observation of the estimated variance of the phase lock loo…
Sobre la naturalización de la lógica*
2003
El presente artículo se ocupa de dar razones en contra de la naturalización de la lógica, en tanto en cuanto esto signifique una revisión de esta ciencia. El trabajo critica cada uno de los intentos históricos importantes que ha habido de revisión de las leyes lógicas -- intuicionismo, lógica cuántica, lógicas alternativas - y también intenta argumentar que el problema de la interpretación de la mecánica cuántica no tiene nada que ver con la naturalización de la lógica. This article is devoted to give reasons against the naturalization of logic, in a sense which entails a revision of this science. The paper criticizes each historical important attempt to revise logical laws - intuitionism, …
Anglotic: English Phonology
2010
El propósito de este proyecto es ofrecer a los estudiantes del grado de Estudios Ingleses y otras personas interesadas en la lengua inglesa la oportunidad de perfeccionar su pronunciación del inglés y/o aprender acerca del sistema fonológico del inglés. This project offers students doing a degree in English and anyone interested in the English language the opportunity to perfect their pronunciation of English and/or to learn about the phonological system of English.
A lift in snail's gut provides an efficient colonization route for tardigrades.
2022
Herbicidal activity of phosphonic, phosphinic, and phosphonous acid analogues of phenylglycine and phenylalanine
1995
A series of phosphonic, phosphinic, and phosphonous acid analogues of phenylglycine and phenylalanine was synthesized and tested as herbicides against Lepidium sativum and Cucumis sativus. Aminobenzylphosphonic acids exhibited notable herbicidal activity and thus represent a group of the most active herbicides found among aminophosphonic acids.
Environmental Organic Photochemistry: Advances and Perspectives
2013
This review is a survey of recent advances in environment related aspects of organic photochemistry. Besides presenting gen- eral concepts, the manuscript is mainly focused on the photoreactivity of natural organic matter, and on the photochemistry of anthropo- genic substances under natural light irradiation.
New TiO2 based photocatalysts for the degradation of organic pollutants in water
2009
Unravelling the Photocatalytic Behavior of All-Inorganic Mixed Halide Perovskites: The Role of Surface Chemical States
2019
Within the most mesmerizing materials in the world of optoelectronics, mixed halide perovskites (MHPs) have been distinguished because of the tunability of their optoelectronic properties, balancing both the light-harvesting efficiency and the charge extraction into highly efficient solar devices. This feature has drawn the attention of analogous hot topics as photocatalysis for carrying out more efficiently the degradation of organic compounds. However, the photo-oxidation ability of perovskite depends not only on its excellent light-harvesting properties but also on the surface chemical environment provided during its synthesis. Accordingly, we studied the role of surface chemical states …