Search results for "AEF"
showing 9 items of 19 documents
Nanostructural depth-profile and field-effect properties of poly(alkoxyphenylene-thienylene) Langmuir-Schäfer thin-films
2008
The correlations between morphological features and field-effect properties of poly(alkoxyphenylene-thiophene) thin Langmuir–Schafer film deposited on differently terminated gate dielectric surfaces, namely bare and methyl functionalized thermal silicon dioxide (t-SiO2), have been systematically studied. The film morphology has been investigated at different film thickness by Scanning Force Microscopy. Films thicker than a few layers show comparable morphology on both dielectric surfaces while differences are seen for the ultra-thin polymer deposit in close proximity to the substrate. Such deposit is notably more heterogeneous on bare t-SiO2, while a more compact and uniform nanogranular st…
Activity against Microorganisms Affecting Cellulosic Objects of the Volatile Constituents of Leonotis nepetaefolia from Nicaragua
2014
The chemical composition of the essential oil from aerial parts of L. nepetaefolia (L.) R. Br. collected in Nicaragua was evaluated by GC and GC-MS. The main components were ( Z)-phytol (22.8%), caryophyllene oxide (18.9%) and hexahydrofarnesylacetone (9.0%). The antibacterial activity against several Gram + and Gram - bacteria, including Bacillus cereus and B. subtilis, both infesting historical cellulosic material, was also determined. B. cereus, B. subtilis and Staphylococcus epidermis were the most affected by the action of the oil.
L’idea di iperspazio e l’evoluzione del pensiero geometrico al quadridimensionale
Attraverso un viaggio storico di quasi due secoli, lo scritto vuole analizzare le situazioni in cui lo studio della geometria iperdimensionale ha avuto la sua genesi e la sua evoluzione. Colui il quale approfondisce in modo analitico la questione è Ludwig Schläfli che con il suo Theorie der vielfachen Kontinuität, a partire dallo studio di un integrale, analizza lo spazio pluridimensionale senza cercare una immagine nel mondo circostante di ciò che descrive in modo molto sistematico attraverso i coefficienti che prendono il suo nome. L’aspetto divulgativo della questione viene affrontata a partire dagli anni ’70 del XIX secolo da Beltrami, Casorati e Stringham, da un punto di vista merament…
BIOTECHNOLOGICAL APPROACHES TO THE GENETIC IMPROVEMENT OF CHRYSANTHEMUM CINERARIAEFOLIUM L.
2011
The interest in sustainable agriculture has increased the demand of plant-derived compounds which can be less toxic both to mammals and to the environment than the synthetic agrochemicals. Chrysanthemum cinerariaefolium L. (Asteraceae), commonly termed pyrethrum, is an economically important crop from highlands of tropical and subtropical regions of the world. It is grown for the extraction of pyrethrins, natural insect repellents of plant origin. Pyrethrins are a mixture of six compounds produced by esterification of two acids (chrysanthemic and pyrethric acid) with three mono-terpene-alcohols (pyrethrolone-5, jasmolone-3 and cinerolone-4). The principale source of pyrethrins are the dried…
Krasnosel'skiĭ-Schaefer type method in the existence problems
2019
We consider a general integral equation satisfying algebraic conditions in a Banach space. Using Krasnosel'skii-Schaefer type method and technical assumptions, we prove an existence theorem producing a periodic solution of some nonlinear integral equation.
Neural Mechanisms Underlying Human Auditory Evoked Responses Revealed By Human Neocortical Neurosolver
2022
Funding Information: This study was supported by National Institutes of Health (Grant Nos. NIBIB RO1 EB022889, NIMH RO1 MH106174). Publisher Copyright: © 2021, The Author(s). Auditory evoked fields (AEFs) are commonly studied, yet their underlying neural mechanisms remain poorly understood. Here, we used the biophysical modelling software Human Neocortical Neurosolver (HNN) whose foundation is a canonical neocortical circuit model to interpret the cell and network mechanisms contributing to macroscale AEFs elicited by a simple tone, measured with magnetoencephalography. We found that AEFs can be reproduced by activating the neocortical circuit through a layer specific sequence of feedforwar…
Evaluation of the validity of temporal sensory evaluation methods carried out by consumers on controlled stimuli delivered by a gustometer
2023
Temporal sensory evaluation is increasingly used with consumers. However, very few studies have investigated the repeatability and resolution of the methods used. Thus, this study aimed to fill in the gap by comparing the conclusions drawn from data collected using three temporal sensory methods performed with consumers on time model solutions delivered using a gustometer. One hundred and fifty consumers were recruited. After familiarization and a recognition task, they were divided into 3 panels, each using a different method to describe their temporal perception: Temporal Dominance of Sensations (TDS), Temporal Check-All-That-Apply (TCATA), and Attack-Evolution-Finish (AEF). Fourteen solu…
Indagini preliminari sulle potenzialità produttive del piretro (Chrysanthemum cinerariaefolium L.) in ambiente mediterraneo.
2011
Dwa nowe stanowiska twardziaka pucharowatego Neolentinus cyathiformis w Polsce
2018
Neolentinus cyathiformis (Schaeff.) Della Maggiora & Trassinelli (Gloeophyllaceae, Gloeophyllales, Agaricomycetes) to rzadki grzyb, który na aktualnej Czerwonej liście grzybów wielkoowocnikowych w Polsce posiada kategorię gatunku wymierającego E. Pomimo szerokiego zasięgu (Europa, Azja, Ameryka Południowa) jego stanowiska są nieliczne. W Polsce do tej pory znanych było 20 stanowisk tego gatunku, w tym zaledwie dwa w północnej części kraju. Celem artykułu jest zaprezentowanie dwóch nowych stanowisk: w Ogrodzie Botanicznym Uniwersytetu im. Adama Mickiewicza w Poznaniu (woj. wielkopolskie) oraz w północno-wschodniej części kraju we wsi Rejsztokiemie (woj. podlaskie). Na obu stanowiskach owocni…