Search results for "Guar"
showing 10 items of 409 documents
Improvement of the electrophoretic protein profiles of Leguminosae gums extracts using gamanase and application to the evaluation of carob–guar mixtu…
2004
Abstract A quantitative assay for guar gum in carob gum, based on the extraction of proteins in acetonitrile–water (7:3), separation by capillary electrophoresis and multiple linear regression (MLR) using the areas of nine selected peaks as predictors, was improved by performing the extraction in the presence of gamanase. In the absence of the enzyme, peak migration times and areas depended on the guar content, which complicated peak identification and evaluation. Manual correction of the migration times by comparison with standard electropherograms obtained with pure carob and carob–guar mixtures was required; however, when the proteins were extracted under sonication at 60 °C for 30 min i…
Guaranteed error bounds for a class of Picard-Lindelöf iteration methods
2013
We present a new version of the Picard-Lindelof method for ordinary dif- ¨ ferential equations (ODEs) supplied with guaranteed and explicitly computable upper bounds of an approximation error. The upper bounds are based on the Ostrowski estimates and the Banach fixed point theorem for contractive operators. The estimates derived in the paper take into account interpolation and integration errors and, therefore, provide objective information on the accuracy of computed approximations. peerReviewed
Rank structured approximation method for quasi--periodic elliptic problems
2016
We consider an iteration method for solving an elliptic type boundary value problem $\mathcal{A} u=f$, where a positive definite operator $\mathcal{A}$ is generated by a quasi--periodic structure with rapidly changing coefficients (typical period is characterized by a small parameter $\epsilon$) . The method is based on using a simpler operator $\mathcal{A}_0$ (inversion of $\mathcal{A}_0$ is much simpler than inversion of $\mathcal{A}$), which can be viewed as a preconditioner for $\mathcal{A}$. We prove contraction of the iteration method and establish explicit estimates of the contraction factor $q$. Certainly the value of $q$ depends on the difference between $\mathcal{A}$ and $\mathcal…
Counting in the Two Variable Guarded Logic with Transitivity
2005
We show that the extension of the two-variable guarded fragment with transitive guards (GF+TG) by functionality statements is undecidable. This gives immediately undecidability of the extension of GF+TG by counting quantifiers. The result is optimal, since both the three-variable fragment of the guarded fragment with counting quantifiers and the two-variable guarded fragment with transitivity are undecidable. We also show that the extension of GF+TG with functionality, where functional predicate letters appear in guards only, is decidable and of the same complexity as GF+TG. This fragment captures many expressive modal and description logics.
Il movimento disegnato: studi grafici sulle scenografie d’avanguardia
2018
L’articolo affronta lo studio delle immagini visuali prodotte dal movimento attraverso il disegno delle scenografie realizzate durante quel momento di rivoluzione teatrale, in atto tra il 1920 e il 1930, che vide la cooperazione di differenti settori dell’arte, tra cui la fotografia, la pittura, l’architettura, il cinema, la danza, la scultura, la musica. I valori visuali che innescarono la teorizzazione dell’avanguardia artistica e, successivamente, la produzione nella forma e nello spazio del disegno scenografico costituiscono un corollario di sistemi dinamici, metafora del movimento decostruito attraverso la figurazione dell’idea e al tempo stesso significazione della distorsione interpr…
Experimental duopolies under price guarantees
2011
In a symmetric differentiated experimental duopoly we test the ability of Price Guarantees (PGs) to raise prices above the competitive levels. Different types of PGs ("aggressive" and "soft" price-beating and price-matching) are implemented either as an exogenously imposed market rule or as a business strategy. Our results show that PGs may lead close to the collusive outcome, depending on whether the interaction between duopolists is repeated and provided that the guarantee is not of the "aggressive" price-beating type.
El derecho de libertad sindical en la guardia civil a la luz de la jurisprudencia del TEDH (Casos Matelly y Adefdromil) y de la STS (Sala de lo Socia…
2017
A lo largo del presente artículo se analiza la posibilidad de implementar la libertad sindical en la Guardia Civil, equiparando su situación a la de la Policía Nacional, a la luz de las últimas sentencias del Tribunal Europeo de Derechos Humanos.----------------------------------------------------------------------------Throughout this article we analyze the possibility of implementing the right to unionize in the Civil Guard, matching its situation to that of the National Police, in the light of the latest rulings of the European Court of Human Rights.
PARALLELISMS AND JUSXTAPOSITIONS IN ELIZAVETA BAM BY D. KHARMS
2014
Unaccompanied Minors in Greece and Italy: An Exploration of the Challenges for Social Work within Tighter Immigration and Resource Constraints in Pan…
2021
The number of unaccompanied minors (UAMs) arriving in the European Union (EU) has been increasing dramatically over recent years resulting in the formulation of EU policy directives around safeguarding and well-being. Notably, the majority of UAMs enter Europe irregularly through two main gateways to the European continent: via Italy, using the Central Mediterranean Sea route
Pricing the Option to Surrender in Incomplete Markets
2010
New international accounting standards require insurers to reflect the value of embedded options and guarantees in their products. Pricing techniques based on the Black and Scholes paradigm are often used; however, the hypotheses underneath this model are rarely met. We propose a framework that encompasses the most known sources of incompleteness. We show that the surrender option, joined with a wide range of claims embedded in insurance contracts, can be priced through our tool, and deliver hedging portfolios to mitigate the risk arising from their positions. We provide extensive empirical analysis to highlight the effect of incompleteness on the fair value of the option.