Search results for "Formula"
showing 5 items of 755 documents
Micro-determination of dithiocarbamates in pesticide formulations using voltammetry
2013
Abstract The purpose of this work was to develop a reliable method for the micro-determination of dithiocarbamates (mancozeb, maneb, propineb, nabam, Na(CH3)2DTC, zineb, ziram, ferbam and thiram) in pesticide formulations for agriculture using adsorptive stripping voltammetry (AdSV). The accuracy of analytical method was valued by analyzing simulate formulation samples prepared by us with known amounts of active ingredients. In addition, the applicability of the AdSV procedure for the analysis of DTCs and EBDTCs in micro-samples was evaluated by estimating its recoveries from spiked commercial formulate samples. The accuracy, valuated as recovery percentage ranged between 85% and 97%. The p…
Il percorso (incerto) della c.d. web tax italiana tra modelli internazionali ed eurounitari di tassazione della digital economy
2019
L’articolo analizza gli aspetti essenziali dell’evoluzione delle strategie di tassazione delle imprese della digital economy, tanto a livello internazionale, quanto a livello eurounitario, per concludere, poi, con un’analisi dell’art. 1, commi 35 e segg., della Legge 30 dicembre 2018 n. 145 (legge di bilancio 2019), che ha introdotto, nel nostro sistema una vera e propria imposta sulle imprese che operano nel settore digitale, denominata “imposta sui servizi digitali” (ISD). Si osserva, a riguardo, che nel comparto della digital economy, quanto all’aspetto della tassazione, è possibile individuare tre diversi approcci. Il primo attribuisce particolare rilievo alla c.d. “presenza economica s…
Modeling multipartite virus evolution: the genome formula facilitates rapid adaptation to heterogeneous environments
2020
Multipartite viruses have two or more genome segments, and package different segments into different particle types. Although multipartition is thought to have a cost for virus transmission, its benefits are not clear. Recent experimental work has shown that the equilibrium frequency of viral genome segments, the setpoint genome formula (SGF), can be unbalanced and host-species dependent. These observations have reinvigorated the hypothesis that changes in genome-segment frequencies can lead to changes in virus-gene expression that might be adaptive. Here we explore this hypothesis by developing models of bipartite virus infection, leading to a threefold contribution. First, we show that th…
Formulaicity in constrained communication : an intermodal approach
2021
DeutschIn dieser an Korpuslinguistik, Formelsprache und Studien uber eingeschrankte Kommunikation grenzende Forschungsstudie, die sich hier auf Ubersetzung, Dolmetschen und L2 konzentriert, wollen wir uberprufen, ob die in der polnisch-englischen Komponente eines intermodalen EPTIC-Korpus gefundenen eingeschrankten Texte sich von den einheimischen Texten unterscheiden in Bezug auf die Verwendung benachbarter Wortkombinationen, oft Bigrams genannt, und ob ahnliche Muster in gesprochenen und geschriebenen Registern gefunden werden konnen. Dazu erarbeiteten wir das Poisson-Regressionsmodell mit festen und zufalligen Effekten. Die Ergebnisse zeigen, dass die ubersetzte Sprache zur hoheren Anzah…
Smilšaino grunšu filtrācijas īpašību izmaiņas atkarībā no to granulometriskā sastāva
2016
Bakalaura darbā veikts autora pētījums par grunts granulometriskā sastāva ietekmi uz filtrācijas īpašībām. Pētījumam ievākti 50 smilšainu grunšu paraugi, kuriem laboratorijā noteikts granulometriskais sastāvs un filtrācijas koeficienti nesablīvētā un sablīvētā stāvoklī. Pēc Hāzena un Beijera formulām aprēķināti filtrācijas koeficienti, un veikta to salīdzināšana ar laboratorijā iegūtajiem datiem.