Search results for "EOs"
showing 10 items of 2714 documents
Electrophoretic separation of a class of nucleosomes enriched in HMG 14 and 17 and actively transcribed globin genes.
1980
Monomer nucleosomes from chick erythrocytes can be fractionated according to their electrophoretic mobility in (comparatively) high salt acrylamide gels. We show that the fractionation is based predominantly on differences in charge. The monomer heterogeneity persists even when the nucleosomes are trimmed down to 145 bp with Exo III or when H1 and H5 are removed. The slowest migrating monomers are associated with HMG 14 and 17; however, we do not believe that these proteins are entirely responsible for the altered mobility since the nucleosome heterogeneity persists even after removal of HMG 14 and 17. The DNA associated with the HMG 14 and 17 containing nucleosomes is shown to be enriched …
Phenology Estimation From Meteosat Second Generation Data
2013
Many studies have focused on land surface phenology, for example as a means to characterize both water and carbon cycles for climate model inputs. However, the Spinning Enhanced Visible Infra-Red Imager (SEVIRI) sensor onboard Meteosat Second Generation (MSG) geostationary satellite has never been used for this goal. Here, five years of MSG-SEVIRI data have been processed to retrieve Normalized Difference Vegetation Index (NDVI) daily time series. Due to existing gaps as well as atmospheric and cloud contamination in the time series, an algorithm based on the iterative Interpolation for Data Reconstruction (IDR) has been developed and applied to SEVIRI NDVI time series, from which phenologi…
Promoting mathematical skills using the instructive program Kriging
2011
Geostatistics was developed in mining for the grade estimation problems of ore deposits, nowadays; it is the most popular method for the interpolation and estimation problems. Methodological consideration about its interpolator, the Kriging, is presented in this paper. For geosciences engineering and other students in general is important to take in advance interpolation methods. This methodology is coming from natural phenomenon, where it is very difficult or even impossible to build deterministic models, only it is possible to describing the behavior from fragmented information of the problem studied. The characterization of the spatial variables using geostatistics has, in general, two m…
Palladium on pumice: new catalysts for the stereoselective semihydrogenation of alkynes to (Z)-alkenes
2001
Abstract High selectivities (93–99%) and excellent stereoselectivities (>99%) in the semihydrogenation of CC triple bonds were achieved using palladium on pumice with a metal loading of 0.5, 1.5 or 3.0% wt as catalyst. The reactions were carried out in ethanol or tetrahydrofuran with only 2.5% of ethylenediamine allowing a self-terminating semihydrogenation independently on the CC triple bond.
ChemInform Abstract: Palladium on Pumice: New Catalysts for the Stereoselective Semihydrogenation of Alkynes to (Z)-Alkenes.
2010
Abstract High selectivities (93–99%) and excellent stereoselectivities (>99%) in the semihydrogenation of CC triple bonds were achieved using palladium on pumice with a metal loading of 0.5, 1.5 or 3.0% wt as catalyst. The reactions were carried out in ethanol or tetrahydrofuran with only 2.5% of ethylenediamine allowing a self-terminating semihydrogenation independently on the CC triple bond.
Viedo līgumu izstrādes platformu salīdzinājums
2018
Viedie līgumi ir jauna tehnoloģija, kurai ir liels potenciāls nākotnē tik plaši izmantotai. To pirmā izstrādes platforma bija Ethereum, taču laika gaitā tai ir parādījušies spēcīgi konkurenti, kuri nav tikuši sīkāk pētīti. Darbā tiek veikta populārāko viedo līgumu izstrādes platformu Ethereum, NEO un EOS projektējuma filozofijas, darbības principu un īpašību pētīšana un, balstoties uz tā, tiek veidots atšķirību salīdzinājums. Pētījuma rezultātā ir iegūta tabula, kurā redzamas platformu būtiskākās atšķirības. Pētījumā secinātas apskatīto platformu projektējuma filozofijas, darbības principu un īpašību atšķirības un kompromisi, uz kuriem platformām jāiziet, lai sasniegtu savus projektējuma mē…
Depuration of geosmin- and 2-methylisoborneol-induced off-flavors in recirculating aquaculture system (RAS) farmed European whitefish
2019
European whitefish Coregonus lavaretus has increasingly become an important species for aquatic food production, especially in the Nordic countries. Whitefish is produced in traditional cage and pond operations, and in recirculating aquaculture system (RAS) in which, unfortunately, off-flavors and odors, mostly caused by geosmin (GSM) and 2-methylisoborneol (MIB), can accumulate in fish flesh from the circulating water. GSM and MIB have very low human sensory detection limits and, therefore, often disliked by consumers even at low concentrations. In this study, concentrations of GSM and MIB in RAS farmed European whitefish were studied by an analytical method based on headspace solid phase …
Impact of Mediation devices on the Museum Visit Experience and on Visitors' Behavioural Intentions
2012
This study draws on the experiential approach and has two main goals: to explore the different dimensions of the museum experience regardless of whether it is mediated by mediation devices (e.g., audio guides, interactive terminals, SmartPhones, tablets, augmented reality), and to identify the impact of such devices on visitors' behavioural intentions. The authors conduct a qualitative and exploratory investigation to address the following questions: Does the development of such devices affect both experience dimensions and the audience's behavioural intentions? Which components of a museum visit are concerned?
Alterations in the Microstructure of the Anterior Mitral Valve Leaflet Under Physiological Stress
2012
An improved understanding of mitral valve (MV) function remains an important goal for determining mechanisms underlying valve disease and for developing novel therapies. Critical to heart valve tissue homeostasis is the valvular interstitial cells (VICs), which reside in the interstitium and maintain the extracellular matrix (ECM) through both protein synthesis and enzymatic degradation [1]. There is scant quantitative experimental data on the alterations of the MV fiber network reorganization as a function of load, which is critical for implementation of computational strategies that attempt to link this meso-micro scale phenomenon. The observed large scale deformations experienced by VICs…
Dažādu astmas vērtēšanas parametru korelācija: plaušu funkcija (FEV), NO izelpas gaisā (FeNO) un eozinofīlu skaits asinīs.
2018
Mūsu pētījuma galvenais mērķis bija novērtēt korelāciju starp dažādiem astmas vērtēšanas parametriem, piemēram, forsētās izelpas tilpumu pirmās sekundes laikā (FEV1), frakcionēto slāpekļa oksīdu slāpekļa oksīdu (FeNO) un eozinofilo leikocītu skaitu venozās asinīs pacientiem ar bronhiālo astmu, lietojot inhalējamo kortikosteroīdu ārstēšanā. Pētījuma tika iekļauti 180 pacienti vecumā no 18 līdz 75 gadiem, ar astmas diagnozi un atgriezenisku obstrukciju, kuri tika ārstēti ar 2.-4. ārstēšanas soli atbilstoši Globālās astmas iniciatīvas (GINA) vadlīnijām. Pētījuma populācijā bija 108 sievietes un 72 vīrieši. No kuriem 114 bija nesmēķētāji, 30 bijušie smēķētāji un 36 smēķētāji. 108 pacienti jeb 6…