Search results for "DSO"
showing 10 items of 1609 documents
Synthesis and characterization of ferrocene-based Schiff base and ferrocenecarboxaldehyde oxime and their adsorptive removal of methyl blue from aque…
2018
The ferrocene-based Schiff base 3 was synthetized by reaction of ferrocenecarboxaldehyde 1 with 4-aminoantipyrine 2. However, the reaction of 1 with hydroxylamine affords ferrocenecarboxaldehyde oxime 4. Compounds 3 and 4 were fully characterized by IR, 1H, 13C and DEPT-135 NMR spectroscopy, elemental analyses and also by single crystal X-ray diffraction. Compounds 3 and 4 were used to remove anionic methyl blue dye from wastewater. The results established that both compounds have high adsorption capacity towards methyl blue. Langmuir adsorption capacity of compound 4 (464 mmol/g) is much higher than that of compound 3 (193 mmol/g) at 25 °C. The kinetics data was fitted well pseudo-second-o…
Assessment of the production costs curve in micro-grids: a comparative analysis
2012
In micro-grids, due to their small scale, there is commonly only one power supplier. A competitive wholesale market hardly exists so the question about how to consider market issues for small producers within micro-grids arises. On the other hand, the specific features of micro-grids where load and generated power hardly find a balance, require that customers take part to regulation issues, maybe using demand response programs. In this paper, price responsive policies and its programs are discussed to answer this question. A case study of a micro-grid with one microturbine and two photovoltaic generators in Italy is analyzed to assess the overall production cost in order to build a price re…
Regional currencies and regional monetary zones in Latin America : what prospects ?
2009
9 p.; This paper aims at drawing lessons from Keynes's plan presented at the Bretton Woods conference, in order to help improving current regional monetary agreements in Latin America. Some promoters of the Bank of the South and the New Financial Architecture in Latin America are proposing to implement a regional clearing system designed to allow a multilateral offsetting of the liabilities and assets generated in the reciprocal transactions of member countries in words that the British economist certainly would not have denied. This system would be very different from current regional payments aggreements that maintain an implicit reference to the US dollar as reserve or payment currency.
Why Is Your Crowd Abandoning You? : Exploring Crowdsourcing Discontinuance through the Lens of Motivation Theory
2019
A typical crowdsourcing platform connects organisations in need for workforce to individuals willing to work for a compensation. Considering that a motivated crowd constitutes a vital resource of such platforms, nurturing it becomes a crucial managerial consideration. Yet, little is known of why individual workers abandon crowdsourcing platforms after long periods of usage. Therefore, we set out to explore how crowd-workers’ motivations change during a platform’s usage lifecycle, from initial usage, to continued use, to its eventual abandonment. To this end, we conducted an in-depth qualitative inquiry into a popular crowdsourcing platform in the software-testing domain. Leveraging self-det…
Hydration process and rheological properties of cement pastes modified by orthophosphate addition
2005
Abstract The use of cement by nuclear industry for confining low radioactive waste knows a constant increase. The interest bore to this material is due to its mechanical and chemical properties. However, these properties may be modified by the nature and the amount of wastes introduced with the mixing solution especially with large amount of phosphate. Precipitation of hydroxylapatite in the cement paste at the very beginning after mixing was emphasized from a particular concentration of orthophosphate. It was also found that this phenomenon leads to an early rigidification of the cement paste. From a kinetics point of view, the evolution of hydration was both delayed and slowed down accord…
Adsorption of methotrexate and calcium leucovorin onto cholestyramine in vitro.
2003
Abstract Methotrexate (MTX), an antimetabolite of folic acid, is a drug widely used in the treatment of different types of cancer. When high doses are administered, it is necessary to interrupt its action by administering calcium leucovorin (CaL). The main pathway of MTX and CaL elimination in humans occurs through the kidney, but about 10% is excreted in the faeces via the bile. Drugs, foods and sorbents in intestinal lumen modify MTX and CaL reabsorption. Individual and simultaneous studies on the adsorption of MTX and CaL from aqueous phosphate buffer by cholestyramine were carried out in order to calculate the adsorption process of MTX and CaL to cholestyramine, and to characterize the …
A Crowd-Sourced Database of Coronamusic: Documenting Online Making and Sharing of Music During the COVID-19 Pandemic
2021
When a sweeping COVID-19 pandemic forced cultural venues, schools, and social hangouts into hibernation in early 2020, music life relocated to the digital world. On social media platforms like YouTube, Facebook, Twitter, and TikTok, sofas and balconies took center stage for musical performances presented as live-streamed concerts and recorded videos. Amateurs and professional musicians alike embraced digital formats and innovated novel genres of corona-themed music. We will refer to the products of this musical phenomenon collectively as "coronamusic." Adapting a well-known term from cultural musicology (Small, 1999), the diverse practices of listening, playing, dancing, composing, rehearsi…
Tuning the Hydroxypropyl Cellulose Adsorption and Desorption at the Nanoparticle/Water Interface by Temperature and Inorganic Salts
2011
Kriminālsodi nepilngadīgajiem un to mērķis
2022
Bakalaura darba temats “Kriminālsodi nepilngadīgajiem un to mērķis’’ ir aktuāls, jo no 2022. gada 1. janvāra stāsies spēkā 2020. gada 17. decembra “Krimināllikuma Grozījumi’’. “Krimināllikuma Grozījumos” tiek noteikti konkrēti kriminālsodi nepilngadīgajiem. Tiek noteikts, ka pirms konkrētā kriminālsoda piemērošanas ir jāskatās kriminālsoda mērķis, kas ir noteikts Krimināllikuma 35.panta otrajā daļā, bet Krimināllikuma 64. panta trešajā daļā ir noteikts, ka primāra ir nepilngadīgā resocializācija. Bakalaura darba mērķis ir izpētīt nepilngadīgās personu regulējumu Latvijā un pasaulē, tiek analizēts kriminālsoda jēdzienu, analizēt kriminālsoda mērķa komponentes, analizēt tiesas praksi, kā ties…
Algorytmy i wytyczne postępowania terapeutycznego w ranach trudno gojących się
2020
Niniejsze opracowanie obejmuje podstawowy zbiór zasad i rekomendacji specjalistów z różnych dziedzin medycyny dotyczących postępowania z ranami o różnych etiologiach. Celem dokumentu jest stworzenie algorytmów terapeutycznych, które będą mogły stanowić podstawę przy ocenie rany, monitoringu i doborze optymalnej metody postępowania w poszczególnych etapach jej leczenia. Dokument w swoich założeniach ma stanowić przydatne narzędzie dla praktyków, które ułatwi prawidłowe podejmowanie decyzji terapeutycznych w procesie leczenia rany