Search results for "Past"
showing 10 items of 931 documents
Characterization of heat-labile toxin-subunit B from Escherichia coli by liquid chromatography-electrospray ionization-mass spectrometry and matrix-a…
2012
The possibilities of characterizing the heat-labile enterotoxin (LT) of enterotoxigenic Escherichia coli (ETEC) by liquid chromatography electrospray mass spectrometry (LC/ESI-MS) and matrix-assisted laser desorption with time-of-flight mass spectrometry (MALDI-TOF-MS) were investigated. The B subunit from recombinant E. coli (expression in Pichia pastoris) can be detected by LC/ESI-MS expressed in P. pastoris and the charge envelope signals can be observed; LC/ESI-MS and MALDI-TOF-MS analysis allowed the acquisition of labile toxin subunit B (LTB) molecular weight and preliminary structural characterization of LTB toxin. MALDI-TOF analysis after reduction and alkylation of the protein evid…
The importance of being first : Effects of candidates’ list positions in the 2003 Bavarian state election
2006
Abstract Normative theories of democracy do not pay much attention to technicalities of voting, implicitly assuming that these do not influence voting behaviour and election outcomes significantly. However, it is not clear whether this is actually the case. In this article we analyse whether one such technical detail matters for voting behaviour: the ballot position. Based on previous research in the field, we discuss ballot position effects and deduce hypotheses concerning list position effects in the 2003 Bavarian state election. In the empirical analysis, it turns out that ballot positions had a considerable influence on voting behaviour in this election, especially, the top position on …
Use of Logistic Regression for Prediction of the Fate of Staphylococcus aureus in Pasteurized Milk in the Presence of Two Lytic Phages
2010
The use of bacteriophages provides an attractive approach to the fight against food-borne pathogenic bacteria, since they can be found in different environments and are unable to infect humans, both characteristics of which support their use as biocontrol agents. Two lytic bacteriophages, vB_SauS-phiIPLA35 (phiIPLA35) and vB_SauS-phiIPLA88 (phiIPLA88), previously isolated from the dairy environment inhibited the growth of Staphylococcus aureus. To facilitate the successful application of both bacteriophages as biocontrol agents, probabilistic models for predicting S. aureus inactivation by the phages in pasteurized milk were developed. A linear logistic regression procedure was used to desc…
Quinoa wet-milling: Effect of steeping conditions on starch recovery and quality
2019
Cereal starches play an important role in the food and non-food industries because of their low cost, availability, and ability to impart a wide range of techno-functional properties. The main objective of this research was to isolate starch, germ, protein, and fiber components from quinoa by a wet-milling procedure. The effect of steeping time and temperature on starch recovery and its quality was investigated. The quinoa steeping conditions, such as time (1, 5, and 9 h) and temperature (30, 40, and 50 °C), in SO2 solution with lactic acid were investigated using a 32 factorial design in order to optimize the starch separation and its quality. The effect of steeping conditions on starch wa…
Сборник действующих договоров, соглашений и конвенций, заключенных Р.С.Ф.С.Р. с иностранными государствами. Вып. 2: Действующие договоры, соглашения …
1921
Содержание: Отдел I. Союзные договоры и соглашения: Армения, Белоруссия, Бухара. Отдел II. Договоры об установлении сношений: Афганистан, Великобритания, Германия, Монголия, Норвегия, Персия, Польша, Турция. Отдел III. Договоры и соглашения о границах: Дальне-Восточная Республика, Польша. Отдел IV. Соглашения по правовым вопросам: Венгрия, Германия, Латвия, Литва, Польша, Турция. Отдел V. Соглашения по экономическим вопросам: Финляндия. Отдел VI. Соглашения по вопросам транзита: Дальне-Восточная Республика, Латвия. Отдел VII. Соглашения по вопросам почтово-телеграфной связи: Латвия, Эстония. Приложение: Американская Администрация помощи. Указатель договоров по странам
Zvaigžņotā Debess: 2017/18, Ziema (238)
2017
Contents: “ZVAIGŽŅOTĀ DEBESS” FORTY YEARS AGO: I.Vilka. Starry Sky and Birds’ Journeys (abridged) ; N.Cimahoviča. Spirals of Saturn’s Rings (abridged) ; I.Šmelds. V Readings of Friedrich Zander ; DEVELOPMENTS in SCIENCE: K.Schwartz. Most Distant Galaxy Clusters and 3D Structure of the Universe ; DISCOVERIES: M.Gills. The Day when Multi-Messenger Astronomy Was Announced ; I.Pundure. ESO Telescopes and Hubble Observe the Source of Gravitational Waves for the First Time ; I.Eglītis. Asteroid “Balklavs” ; SPACE RESEARCH and EXPLORATION: R.Misa. Mission of Cassini – Discoveries to the Very End ; J.Jaunbergs. The Icy World Tethys ; OBSERVATORIES and INSTRUMENTS: M.Gills. The Giant Radio Telescope…
Economic values for production and functional traits in Valle del Belice dairy sheep using profit functions
2011
Abstract A deterministic static model was used to estimate the economic values (EV) of production (MY, milk yield; BW, birth weight; and ADG, average daily gain) and functional traits (ASR, adult survival rate; LSR, lamb survival rate; FE, fertility; PR, prolificacy; and LW ewe , mature weight of ewe) in Valle del Belice dairy sheep. In this study, values for the biological parameters and the production traits used in the model were taken from real data, by surveying 15 Valle del Belice farmers and reflected the production circumstances of pasture based dairy production systems. In this system feed cost accounted for 95% of total variable costs, whereas fixed costs were low and reflected tr…
On the empirical spectral distribution for certain models related to sample covariance matrices with different correlations
2021
Given [Formula: see text], we study two classes of large random matrices of the form [Formula: see text] where for every [Formula: see text], [Formula: see text] are iid copies of a random variable [Formula: see text], [Formula: see text], [Formula: see text] are two (not necessarily independent) sets of independent random vectors having different covariance matrices and generating well concentrated bilinear forms. We consider two main asymptotic regimes as [Formula: see text]: a standard one, where [Formula: see text], and a slightly modified one, where [Formula: see text] and [Formula: see text] while [Formula: see text] for some [Formula: see text]. Assuming that vectors [Formula: see t…
Immobilisation increases yeast cells' resistance to dehydration-rehydration treatment.
2014
This study was performed with the goal of revealing if the dehydration procedure used in our new immobilisation method noticeably decreases the viability of yeast cells in immobilised preparations. Various yeasts were used in this research: Saccharomyces cerevisiae cells that were rather sensitive to dehydration and had been aerobically grown in an ethanol-containing medium, a recombinant strain of S. cerevisiae grown in aerobic conditions which were completely non-resistant to dehydration and an anaerobically grown bakers' yeast strain S. cerevisiae, as well as a fairly resistant Pichia pastoris strain. Experiments performed showed that immobilisation of all these strains essentially incre…
Animal rennets as sources of dairy lactic acid bacteria
2014
ABSTRACT The microbial composition of artisan and industrial animal rennet pastes was studied by using both culture-dependent and -independent approaches. Pyrosequencing targeting the 16S rRNA gene allowed to identify 361 operational taxonomic units (OTUs) to the genus/species level. Among lactic acid bacteria (LAB), Streptococcus thermophilus and some lactobacilli, mainly Lactobacillus crispatus and Lactobacillus reuteri , were the most abundant species, with differences among the samples. Twelve groups of microorganisms were targeted by viable plate counts revealing a dominance of mesophilic cocci. All rennets were able to acidify ultrahigh-temperature-processed (UHT) milk as shown by pH …