Search results for "PREP"
showing 10 items of 1334 documents
Evaluation by HPLC-UV of Polar Pesticides in Rice Fields
1999
Karyotype variability and inter-population genomic differences in freshwater ostracods (Crustacea) showing geographical parthenogenesis
2018
Transitions from sexual to asexual reproduction are often associated with polyploidy and increased chromosomal plasticity in asexuals. We investigated chromosomes in the freshwater ostracod species Eucypris virens (Jurine, 1820), where sexual, asexual and mixed populations can be found. Our initial karyotyping of multiple populations from Europe and North Africa, both sexual and asexual, revealed a striking variability in chromosome numbers. This would suggest that chromosomal changes are likely to be accelerated in asexuals because the constraints of meiosis are removed. Hence, we employed comparative genomic hybridization (CGH) within and among sexual and asexual populations to get insigh…
LbL multilayer capsules: recent progress and future outlook for their use in life sciences.
2010
In this review we provide an overview of the recent progress in designing composite polymer capsules based on the Layer-by-Layer (LbL) technology demonstrated so far in material science, focusing on their potential applications in medicine, drug delivery and catalysis. The benefits and limits of current systems are discussed and the perspectives on emerging strategies for designing novel classes of therapeutic vehicles are highlighted. © 2010 The Royal Society of Chemistry.
Ar jauniem bioloģiskiem preparātiem apstrādātās augsnes molekulāri bioloģiskais raksturojums
2017
Šī pētījuma mērķis bija noskaidrot divu jaunu bioloģisko preparātu ietekmi uz augsnes mikroorganismu ģenētiskā materiāla koncentrācijām un sugu sastāvu. Pētījums tika sadalīts divos neatkarīgos eksperimentos. Pirmajā eksperimentā pētāmie augsnes parauglaukumi tika apstrādāti ar mikroorganismus saturošu kūdras preparātu, bet otrajā – rapša salmiem un mikroorganismiem ar celulolītisko aktivitāti. Parauglaukumos audzēja miežus un rapsi. Pētījumā tika pielietotas gan klasiskās mikrobioloģijas metodes, lai identificētu augsnes mikrobiotas raksturīgākos pārstāvjus, gan molekulārās – PCR, qPCR, ARDRA, lai noteiktu augsnes mikroorganismu ģenētiskā materiāla koncentrācijas. Tika veikta klasteranalīz…
El aprendizaje dialógico a través de las tertulias pedagógicas dialógicas en la formación inicial del profesorado
2018
El objetivo de este trabajo es presentar la experiencia de las tertulias pedagógicas dialógicas como estrategia en la formación inicial de maestros. Los participantes fueron el alumnado de la asignatura de Observación e Innovación sobre la Práctica en el aula de educación Infantil del Grado de Maestro en Educación Infantil de la Universitat de Valencia. La muestra está formada por un total de 50 estudiantes (49 mujeres y 1 hombre). Tras el visionado de la película planteamos una reflexión individual sobre la misma, lectura del libro “23 maestros, de corazón. Un salto cuántico en la enseñanza” y la realización de la tertulia pedagógica dialógica. Los resultados de la evaluación muestran la c…
Designing for Networked Community Resilience
2016
Abstract Communities have been described to be at the heart of the preparedness for and the response to disasters. The increasing connectedness has made communities more vulnerable for their dependence on a complex network of critical infrastructures. At the same time, this very connectedness has the potential to enable communities to self-organise, engage, and connect with other communities to improve their resilience. While the pathway to more resilience is promising and has many advocates, the response to crises and disasters, time and again reveals the challenges related to (i) ad-hoc switching from preparedness to response; (ii) ad-hoc connecting professional responders, communities, v…
Remote Sensing Geometric Corrections
2016
This article reviews the different aspects of geometrical processing of remote sensing data, discussing error sources and methods to determine the transformation from the image acquisition geometry to the output cartographic product. Resampling methods are discussed to transform the input image to the output geometry. Several practical examples of remote sensing platforms are discussed, including satellite cases and airborne sensors. Validation of the resulting geometrical processed products is also discussed. Spatial mosaicking techniques and multitemporal composites used to produce multisource integrated products and advanced applications are finally considered, keeping a perspective on t…
Study of Uptake Mechanisms of Halloysite Nanotubes in Different Cell Lines
2021
Giuseppa Biddeci,1,2 Gaetano Spinelli,1 Marina Massaro,2 Serena Riela,2 Paola Bonaccorsi,3 Anna Barattucci,3 Francesco Di Blasi1 1Institute for Innovation and Biomedical Research (IRIB), CNR, Palermo, 90146, Italy; 2Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), Sect. Chemistry, University of Palermo, Palermo, 90128, Italy; 3Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, 98158, ItalyCorrespondence: Francesco Di BlasiInstitute for Innovation and Biomedical Research (IRIB), CNR, Via Ugo La Malfa 153, Palermo, 90146, ItalyTel +39 0916809514Email francesco.diblasi@irib.cnr.itPurpose: Hal…
Study protocol for an online questionnaire survey on symptoms/signs, protective measures, level of awareness and perception regarding covid-19 outbre…
2020
The Centres for Disease Control and Prevention and the World Health Organization have developed preparedness and prevention checklists for healthcare professionals regarding the containment of COVID-19. The aim of the present protocol is to evaluate the impact of the COVID-19 outbreak among dentists in different countries where various prevalence of the epidemic has been reported. Several research groups around the world were contacted by the central management team. The online anonymous survey will be conducted on a convenience sample of dentists working both in national health systems and in private or public clinics. In each country/area, a high (~5–20%) proportion of dentists working th…
Development of an ion-pair to improve the colon permeability of a low permeability drug: Atenolol.
2016
Abstract To ensure the optimal performance of oral controlled release formulations, drug colon permeability is one of the critical parameters. Consequently developing this kind of formulations for low permeability molecules requires strategies to increase their ability to cross the colonic membrane. The objective of this work is to show if an ion-pair formation can improve the colon permeability of atenolol as a low permeability drug model. Two counter ions have been tested: brilliant blue and bromophenol blue. The Distribution coefficients at pH 7.00 (DpH7) of atenolol, atenolol + brilliant blue and atenolol + bromophenol blue were experimentally determined in n-octanol. Moreover, the colo…