Search results for "ICO"
showing 10 items of 30544 documents
Diversity in warning coloration: selective paradox or the norm?
2019
Aposematic theory has historically predicted that predators should select for warning signals to converge on a single form, as a result of frequency-dependent learning. However, widespread variation in warning signals is observed across closely related species, populations and, most problematically for evolutionary biologists, among individuals in the same population. Recent research has yielded an increased awareness of this diversity, challenging the paradigm of signal monomorphy in aposematic animals. Here we provide a comprehensive synthesis of these disparate lines of investigation, identifying within them three broad classes of explanation for variation in aposematic warning signals: …
Características de los vecindarios y la distribución espacial de problemas sociales en la ciudad de Valencia
2018
The aim of this doctoral thesis is to explore the influence of neighborhood-level variables on the spatial and spatio-temporal distribution of different social problems in the city of Valencia. In Study 1, we present data on the development and validation of an observational instrument to assess neighborhood disorder. Results supported a three-factor model (physical disorder, social disorder and physical deterioration), and they showed good reliability and validity evidences. In Study 2, we assess the psychometric properties of a neighborhood disorder scale using Google Street View. Results supported a bifactorial solution with a general factor (general neighborhood disorder) and two specif…
In-Depth Characterization of Bioactive Extracts from Posidonia oceanica Waste Biomass
2019
© 2019 by the authors.
A proposito della collocazione dell'accento su certi composti di tipo bahuvrihi in vedico e in greco antico
2010
Una discussione sui composti non prescinde mai dalla sistemazione di essi proposta dalla grammatica indiana. Secondo la terminologia da questa introdotta i composti oggi detti possessivi erano chiamati bahuvrihi (es. hiranyaparna "dalle ali d'oro"). Il lavoro è dedicato a una specifica questione relativa alla collocazione dell'accento in certi composti del tipo bahuvrihi. Coincidenze nella collocazione dell'accento sui composti greci e indiani antichi erano già state notate da altri. Gli autori hanno provato a verificare se il fenomeno dell'accentazione del suffisso, riscontrabile nei bahuvrihi del Rig Veda, sia presente e in che termini nel greco antico.
Effects of NAA and Ecklonia maxima Extracts on Lettuce and Tomato Transplant Production
2022
Ecklonia maxima and the commercial biostimulants produced from it contain various plant growth regulators that are responsible for the growth stimulation recorded in many crops. Auxins are one of the major plant growth regulators contained in E. maxima extracts. The aim of this research was to evaluate the growth-promoting effect of a seaweed extract from E. maxima on lettuce and tomato transplant production under nursery conditions, and to compare the effect of this extract with an equal concentration of synthetic auxin. Two doses of natural or synthetic exogenous auxins (50 or 100 μg L−1) were supplied to the substrate through the irrigation water with an ebb and flow system, 4, …
Quality and Shelf-life of Minimally Processed Cauliflower
2011
Cauliflower has been described as a vegetable with a high nutritional value due to its important content of vitamins, antioxidants and anti-carcinogenic compounds. Cauliflower inflorescences are harvested while they are totally immature, which implies severe changes in nutrient, water and hormonal status. Harvesting and the following processing can cause a severe stress determining the appearance of accelerated senescence symptoms. The effect of processing and cold storage of minimally processed cauliflower were investigated. Florets were treated with antioxidants before storage in PE bags at 4°C for 14 days. During storage period, weight loss, colour, firmness, SSC, pH, titratable acidity,…
From soil to soil-less in horticulture: quality and typicity
2013
In this review, the technique of soil-less cultivation of horticultural crops is analysed, the main differences between this and traditional cultivation techniques are described, and the advantages and disadvantages of each method in relation to the others are identified. Soilless cultivation has revolutionised various sectors of vegetable and floriculture production, and recent years have also seen interest being shown by Italian fruit crop producers, particularly those involved in table grape viticulture. The various issues related to the use of this technique are described in relation to the needs of the substrate, water management, and mineral nutrition of the different species, and to …
Impiego di funghi AM in viticoltura: valutazione dello stato di micorrizazione e della risposta vegetativa
2011
Comparing micro-cutting and mini-cutting technique for the clonal propagation of Metrosideros excelsa
2017
public gardens for its foliage and attractive red flowers. M. excelsa plants are commercially propagated by soft and semi-ripe cuttings. Therefore, new and more reliable propagation techniques derived both from conventional and advanced propagation methods should be considered to support Metrosideros nursery development. The mini-cutting and micro-cutting techniques were compared for the clonal propagation of M. excelsa. Ex vitro rooted micro-cuttings resulted superior to mini-cuttings in terms of rooting percentage, root number per cutting and root length by 23.5%, 42.5% and 2.4%, respectively. However, the mini-cutting technique can be considered an alternative reliable propagation method…