Search results for "PICO"

Morphogenic responsein vitroof epicotyl segments ofCitrus macrophylla

2008

Abstract The influence of explant orientation, contact of the cut surface with the medium, type of growth regulators and distance of epicotyl cuttings from the cotyledonary node (the part of the seedling where the cotyledons are attached) on in vitro morphogenesis of Citrus macrophylla (alemow) was evaluated. Maximum number of shoots was induced from epicotyl segments placed horizontally.

Seed germination in the Sicilian subspecies ofDianthus rupicolaBiv. (Caryophyllaceae)

2012

Abstract Five populations belonging to three subspecies of Dianthus rupicola Biv. (D. rupicola subsp. rupicola, D. rupicola subsp. aeolicus, and D. rupicola subsp. lopadusanus) and growing in different geographical areas of Sicily were tested for seed germination at various temperatures. All populations showed high germination rates with an optimum temperature between 15°C and 25°C. Efficient seed germination might contribute significantly to the preservation of these subspecies which are currently exposed to several environmental threats.

Potential allelopathic activity ofSideritis italica(Miller) Greuter et Burdet essential oil

2011

Sideritis italica (Miller) Greuter et Burdet is a widespread Mediterranean Lamiacea. Essential oils from S. italica flowerheads and leaves were extracted by hydrodistillation and then tested for their potential allelopathic activity against Raphanus sativus L. (Magnoliophyta) and the moss Tortula muralis (Hedw.) (Bryophyta), two organisms already tested for allelopathy, and against two bryophytes growing in the same environment as S. italica: the moss Bryum capillare Hedw. and the liverwort Lunularia cruciata (L.) Dum. For R. sativus, we considered seed germination and root and epicotyl growth. For the mosses, we used spore germination and protonemata development, while for the liverwort, w…

L'informazione briofloristica per la valutazione dell'impatto antropico: indagini in aree urbane, rurali e seminaturali della provincia di Palermo

2008

Interligand Electron Transfer Determines Triplet Excited State Electron Injection in RuN3−Sensitized TiO2 Films

2004

Electron injection from the transition metal complex Ru(dcbpy)(2)(NCS)(2) (dcbpy = 2,2'-bipyridine-4,4'-dicarboxylate) into a titanium dioxide nanoparticle film occurs along two pathways. The dominating part of the electron injection proceeds from the initially excited singlet state of the sensitizer into the conduction band of the semiconductor on the sub-hundred-femtosecond time scale. The slower part of the injection occurs from the thermalized triplet excited state on the picosecond time scale in a nonexponential fashion, as was shown in a previous study (Benko, G.; et al. J. Am. Chem. Soc. 2002, 124, 489). Here we show that the slower channel of injection is the result of the excited s…

Pico: A data acquisition program for picosecond laser spectroscopy

1992

Abstract A data acquisition and control program for picosecond pump and probe experiments has been developed. The program PICO is written in C-programming language for maximum efficiency. The software which runs on an IBM PC compatible microcomputer controls a stepper motor driven optical delay, and at the same time collects data from a digital lock-in amplifier. PICO can be used to control any experiment utilizing two-beam pump probe technique. The modular structure of the software allows for easy implementation with different hardware configurations. The program includes: measurement option, manual control of the delay line using a joystick and functions for file retrieval and editing. Ad…

2017

Abstract In this study, an adsorption-oriented process for the removal of fungicides from polycontaminated aqueous solutions was applied. To remove triazole fungicides from aqueous mixtures of propiconazole (PROPI), tebuconazole (TEBU), epoxiconazole (EPOXI), bromuconazole (BROMU) and difenoconazole (DIFENO), several materials used as adsorbents were compared using batch experiments, namely two conventional activated carbons (ACs) and five nonconventional cross-linked cyclodextrin (CD)-based materials (α-CDP, β-CDP, γ-CDP, αβγ-CDP mixture, and hydroxypropyl-β-CDP). This article presents the abatements obtained. As expected, ACs exhibited the highest levels of triazole fungicide removal: the…

A comparison of neutron scattering studies and computer simulations of polymer melts

2000

Abstract Neutron scattering and computer simulations are powerful tools for studying structural and dynamical properties of condensed matter systems in general and of polymer melts in particular. When neutron scattering studies and quantitative atomistic molecular dynamics simulations of the same material are combined, synergy between the methods can result in exciting new insights into polymer melts not obtainable from either method separately. We present here an overview of our recent efforts to combine neutron scattering and atomistic simulations in the study of melt dynamics of polyethylene and polybutadiene. Looking at polymer segmental motion on a picosecond time scale, we show how at…

3-Bromopyridine-2-carbonitrile

2019

The title compound, C6H3BrN2, also known as 3-bromopicolinonitrile, was synthesized by cyanation of 2,3-dibromopyridine. In the solid state, short intermolecular Br...N contacts are observed. Additionally, the crystal packing is consolidated by π–π stacking interactions with centroid–centroid distances of 3.7893 (9) Å.

Alteraciones conductuales en personas mayores que viven en residencias

2019

Los pronósticos acerca del impacto de la demencia a nivel mundial derivan en un creciente interés en este sector. En concreto, en ámbito residencial se persigue desde hace años implantar el Modelo de Atención Integral Centrado en la Persona, paradigma que pretende huir del modelo biomédico tradicional y poner a la persona en el centro de sus intervenciones, amoldando las tareas de los trabajadores para lograr una buena praxis profesional que respete los derechos y el proyecto vital de las personas. Una de las mayores problemáticas al trabajar en residencias son los síntomas psicológicos y conductuales de las personas con deterioro cognitivo o demencia. Estos síntomas son frecuentes, disrupt…