Search results for "quantitative"
showing 10 items of 2409 documents
Methodological Aspects of Studying Ideological Changes in the Context of Political Parties
2020
Celem artykułu jest analiza aspektów metodologicznych związanych z badaniem zmian ideologicznych w partiach politycznych. W pracy porównano analizę ilościową programów wyborczych i ankiety eksperckiej, oceniono ich mocne i słabe strony oraz przeanalizowano możliwości ich zastosowania. Hipoteza przyjęta w artykule jest następująca: analiza ilościowa programów wyborczych jest obciążona mniejszymi słabościami metodologicznymi niż ankieta ekspercka, a zatem jest bardziej niezawodnym narzędziem do pomiaru zmian ideologicznych w środowisku partii politycznych
Qualitative screening of 116 veterinary drugs in feed by liquid chromatography-high resolution mass spectrometry: potential application to quantitati…
2014
Abstract Veterinarian and human pharmaceuticals may be intentionally added to animal feed to enhance animal production. Monitoring these substances is necessary for protecting the consumers. In this work, a screening method covering 116 human and veterinary drugs has been developed and validated in five types of animal feed at 0.02 and 0.2 mg kg−1. After a simple extraction and dilution, the samples were analysed by ultra-high performance liquid chromatography coupled to quadrupole time-of-flight mass spectrometry (UHPLC-QTOF MS). Nearly all compounds tested were detected at 0.02 mg kg−1, based on the presence of the accurate-mass (de)protonated molecule. However, the identification using a…
Study of the aminopeptidase N gene family in the lepidopterans Ostrinia nubilalis (Hübner) and Bombyx mori (L.): Sequences, mapping and expression
2010
Aminopeptidases N (APNs) are a class of ectoenzymes present in lepidopteran larvae midguts, involved in the Bacillus thuringiensis (Bt) toxins mode of action. In the present work, seven aminopeptidases have been cloned from the midgut of Ostrinia nubilalis, the major Lepidopteran corn pest in the temperate climates. Six sequences were identified as APNs because of the presence of the HEXXH(X)18E and GAMEN motifs, as well as the signal peptide and the GPI-anchor sequences. The remaining sequence did not contain the two cellular targeting signals, indicating it belonged to the puromycin-sensitive aminopeptidase (PSA) family. An in silico analysis allowed us to find orthologous sequences in Bo…
Quantitative determination of casein genetic variants in goat milk: Application in Girgentana dairy goat breed
2016
The study was conducted to develop a high-performance liquid chromatographic (HPLC) method to quantify casein genetic variants (αs2-, β-, and κ-casein) in milk of homozygous individuals of Girgentana goat breed. For calibration experiments, pure genetic variants were extracted from individual milk samples of animals with known genotypes. The described HPLC approach was precise, accurate and highly suitable for quantification of goat casein genetic variants of homozygous individuals. The amount of each casein per allele was: αs2-casein A = 2.9 ± 0.8 g/L and F = 1.8 ± 0.4 g/L; β-casein C = 3.0 ± 0.8 g/L and C1 = 2.0 ± 0.7 g/L and κ-casein A = 1.6 ± 0.3 g/L and B = 1.1 ± 0.2 g/L. A good correl…
Analiza porównawcza wybranych frazeologizmów animalistycznych w trzech językach słowiańskich i w dwóch germańskich
2016
In the contemporary civilization, our world and that of animals merge more and more extensively, and so they are becoming increasingly dependent on each other. On the one hand, human beings - having considered themselves lords of the world - try hard to be as humane as they can towards animals, but on the other - they treat them utterly instrumentally, which is widely reflected, among others, in our languages. This particular observation has served as a basis for the present article. The article - after a concise conceptual part - presents selected fragments (about 40%) of the results of the empirical linguistic research which the author has performed in order to study qualitatively and qua…
1-methil-3H-pyrazolo[1-2-a]benzo[1-2-3-4]tetrazin-3-ones, design synthesis and biological activity of new antitumoral agents
2005
1-Methylpyrazolo[1,2-a]benzo[1,2,3,4]tetrazin-3-ones 4, synthesized in good to excellent yields, were designed as novel alkylating agents because of their peculiar chemical behavior. All derivatives showed antiproliferative activity against more than 50 types of tumor cell lines with GI50 reaching sub-micromolar values. SAR studies revealed that the presence of a chlorine atom is well-tolerated in both positions 8 and 9, whereas in the case of the methyl group, switching from the 8 to the 9 position gives rise to the most active compound of the series, 4g, either for the number of cell lines inhibited and for selectivity against leukaemia and renal cancer subpanels. COMPARE and 3D-MIND comp…
Coupled fixed point results in cone metric spaces for -compatible mappings
2011
Abstract In this paper, we introduce the concepts of -compatible mappings, b-coupled coincidence point and b-common coupled fixed point for mappings F, G : X × X → X, where (X, d) is a cone metric space. We establish b-coupled coincidence and b-common coupled fixed point theorems in such spaces. The presented theorems generalize and extend several well-known comparable results in the literature, in particular the recent results of Abbas et al. [Appl. Math. Comput. 217, 195-202 (2010)]. Some examples are given to illustrate our obtained results. An application to the study of existence of solutions for a system of non-linear integral equations is also considered. 2010 Mathematics …
Diversité des communautés microbiennes telluriques à l'échelle du territoire national
2009
Communication orale - résumé Session 5 : sols, biodiversité, écologie fontionnelleCommunication orale - résumé Session 5 : sols, biodiversité, écologie fontionnelle; absent
A quantitative assessment of intraspecific morphological variation in Gahagan bifaces from the southern Caddo area and central Texas
2019
This investigation aggregates intact or reconstructed Gahagan bifaces from the southern Caddo area and central Texas to test the hypothesis that Gahagan biface morphology differs between the regions. The Gahagan bifaces (n = 102) were scanned, then analysed using a novel landmarking protocol and the tools of geometric morphometrics. Results provide a preview of the significant differences in Gahagan biface morphology expressed between the southern Caddo area and central Texas regions. The size discrepancy represents an inversion of current theoretical constructs that posit a decrease in tool size thought to articulate with an increase in distance from the raw material source. It is posited …