Search results for "RPT"
showing 10 items of 5119 documents
KOSMOS 2017 Peru Side Experiment: nutrients, phytoplankton abundances, enzyme rates, photophysiology
2022
This data was collected during an short-term incubation experiment in March 2017 that investigated the response of a surface plankton community to upwelling. This experiment was carried in the framework of the SFB754-funded KOSMOS mesocosm study that took place in La Punta, Callao, Peru between February-April 2017. A total of six different treatments were used to disentangle chemical and biological characteristics of deep water that influence surface plankton blooms: 2 different deep water sources with different nutrient concentrations; 3 treatments to distinguish the effects of inorganic nutrients, organic nutrients and deep water microbial populations. Measured variables include inorganic…
Potential-assisted deposition of mixed alkanethiol self-assembled monolayers
2010
Abstract Preparation of self-assembled monolayers (SAMs) usually involves passive incubation. The recently developed potential-assisted deposition is indeed more selective as well as 100-fold faster than passive adsorption, thereby enhancing the reproducibility of the monolayer deposition. This article aims to identify the electrodeposition conditions necessary to prepare mixed alkanethiol SAMs on gold surface. Parameters such as concentrations in solution, electrode polarization and deposition time were examined for two chain lengths, C 3 (mercaptopropionic acid, MPA) and C 18 (octadecanethiol, ODT). The kinetics and composition of the SAMs were systematically characterized by reductive st…
Photocycle of point defects in highly- and weakly-germanium doped silica revealed by transient absorption measurements with femtosecond tunable pump.
2022
AbstractWe report pump-probe transient absorption measurements addressing the photocycle of the Germanium lone pair center (GLPC) point defect with an unprecedented time resolution. The GLPC is a model point defect with a simple and well-understood electronic structure, highly relevant for several applications. Therefore, a full explanation of its photocycle is fundamental to understand the relaxation mechanisms of such molecular-like systems in solid state. The experiment, carried out exciting the sample resonantly with the ultraviolet (UV) GLPC absorption band peaked at 5.1 eV, gave us the possibility to follow the defect excitation-relaxation dynamics from the femto-picosecond to the nan…
Synthesis, Electrochemistry, and Photophysics of Aza-BODIPY Porphyrin Dyes
2016
International audience; The synthesis of dyad and triad aza-BODIPY-porphyrin systems in two steps starting from an aryl-substituted aza-BODIPY chromophore is described. The properties of the resulting aza-BODIPY-porphyrin conjugates have been extensively investigated by means of electrochemistry, spectroelectrochemistry, and absorption/emission spectroscopy. Fluorescence measurements have revealed a dramatic loss of luminescence intensity, mainly due to competitive energy transfer and photoinduced electron transfer involving charge separation followed by recombination.
Study of the thermochromic phase transition in CuMo1−xWxO4 solid solutions at the W L3-edge by resonant X-ray emission spectroscopy
2021
This is the peer reviewed version of the following article: I. Pudza, A. Kalinko, A. Cintins, A. Kuzmin, Acta Mater. 205 (2021) 116581, which has been published in final form at https://www.sciencedirect.com/science/article/abs/pii/S1359645420310181 This article may be used for non-commercial purposes in accordance with Elsevier Terrms and Conditions for Self-Archiving.
Application of algae in active biomonitoring of the selected holding reservoirs in swietokrzyskie province
2016
During the years 2014-2015, biomonitoring studies were carried out at three holding reservoirs located in Swietokrzyskie Province (central Poland): Kielce artificial lake, Chancza reservoir and Sielpia reservoir. In sea water algae Palmaria palmata (Linnaeus) Weber & Mohr, exposed in the analysed waters, the increases of concentrations were determined by the atomic absorption spectrometry method (AAS), of the following: Mn, Fe, Cu, Zn, Cd and Pb. Conductivity and pH were also determined in the reservoirs waters. The differences between the increases of heavy metal concentrations in the samples of algae found along the coastline were indicated; they result from different distances from the p…
Physicochemical investigation of surfactant-coated gold nanoparticles synthesized in the confined space of dry reversed micelles
2006
Abstract Gold nanoparticle/surfactant composites have been synthesized by a novel reduction reaction in the confined space of dry sodium bis(2- ethylhexyl)sulfosuccinate (AOT) or lecithin reversed micelles dispersed in n-heptane and cyclohexane, respectively. The reaction was carried out by adding an opportune amount of anhydrous hydrazine/tetrahydrofuran solution to a suspension of HAuCl4-containing dry reversed micelles dispersed in organic solvent. UV–vis investigation ascertained the formation of stable metal gold nanoparticles and the analysis of FT-IR spectra highlighted the formation of an oriented surfactant monolayer at the nanoparticle surface. Simple evaporation under vacuum of t…
Iespējamie risinājumi revīzijas vienkāršošanai maziem vai nesarežģītiem uzņēmumiem
2020
Maģistra darbs “Iespējamie risinājumi revīzijas vienkāršošanai maziem vai nesarežģītiem uzņēmumiem”. Maģistra darba mērķis ir veikt Starptautiskās revīzijas un apliecinājumu standartu padomes (IAASB) publicētā diskusiju dokumenta “Audits of Less Complex Entities: Exploring Possible Options to Address the Challenges in Applying the ISAs” un saistošu publikāciju izpēti par speciālu standartu, kas tiks izstrādāts un būs piemērojams mazo vai nesarežģīto uzņēmumu (LCE) revīzijās, lai apkopot informāciju par izaicinājumiem ar kuriem revidenti saskarās savā darbā revidējot uzņēmumus, kas pēc savas struktūras ir mazi vai mazāk sarežģīti uzņēmumi, lai apkopot galvenos ieguvumus un iespējamos risināj…
Uzņēmuma SIA "X" finanšu pārskatu revīzija
2017
Maģistra darba temats ir “Uzņēmuma SIA “X” finanšu pārskatu revīzija.” Maģistra darba mērķis ir balstoties uz analītiskām procedūrām, veikt uzņēmuma SIA „X” finanšu pārskatu revīziju, novērtēt finanšu rādītājus, sniegt atzinumu, izstrādāt secinājumus un priekšlikumus uzņēmuma darbības uzlabošanai. Maģistra darbs sadalīts trīs nodaļās. Darba teorētiskajā daļa ir sniegts finanšu pārskatu revīzijas procesa raksturojums un pamatinformācija par uzņemumu SIA „X”. Praktiskajā daļā darba autore novērtēja revīzijas risku un veica būtiskuma aprēķinu, sastādija revīzijas programmas un analītiskās procedūras, veica uzņēmuma SIA „X” finanšu analīzi un iegūtos rezultātus salīdzināja ar nozares vidējiem r…
Starptautiskā revīzijas standarta “Ziņošana par galvenajiem revīzijas jautājumiem neatkarīga revidenta ziņojumā” piemērošanas prakse
2019
Diplomdarbs „Starptautiskā revīzijas standarta „Ziņošana par galvenajiem revīzijas jautājumiem neatkarīga revidenta ziņojumā” piemērošanas prakse”. Diplomdarba mērķis ir izpētīt 701. SRS „Ziņošana par galvenajiem revīzijas jautājumiem neatkarīga revidenta ziņojumā” norādītās prasības, apkopot šo prasību piemērošanas praksi, lai novērtētu neatkarīgu revidentu ziņojumu formas atbilstību jaunajām SRS prasībām un izstrādātu priekšlikumus neatkarīga revidenta ziņojuma kvalitātes uzlabošanai. Atslēgvārdi: revīzija, starptautiskie revīzijas standarti, galvenie revīzijas jautājumi, biržā kotētie uzņēmumi, neatkarīgu revidentu ziņojums.