Search results for " Reproduction"

Review of the chromatic subjects about image capture (II)

2002

Este trabajo aborda la problemática general de la reproducción del color que se genera en dispositivos de captura (escáneres y cámaras). Se expuso en la primera parte de este trabajo que los dispositivos de captura no son directamente instrumentos de medida del color debido a la opción tecnológica sistemáticamente usada en el diseño de sus sensibilidades espectrales. Por tanto, se estudian en esta segunda sección las opciones posibles de transformación de color o perfil colorimétrico entre el espacio RGB dependiente de estos dispositivos y el espacio estándar CIE-1931 XYZ. Esto conlleva a su vez una revisión de los algoritmos existentes para evaluar el grado de exactitud colorimétrica conse…

Black currant project: Multidisciplinary approach to agro-ecological measures

2022

The decline of wild pollinators leads to a drastic drop in the associated ecosystem service, resulting in significant lossesin agricultural yields. The production of blackcurrant “Noir de Bourgogne” could potentially be tripled, if populationsof wild pollinators were restored. Various agroecological measures beneficial to pollinators are discussed here, as wellas ongoing experimental tests. We discuss the practical possibilities of implementing these measures by blackcurrantgrowers as well as the technical locks that still exist. The return to an agroecological equlibrium for which pollinationbecomes again a free ecosystem service for agriculture, requires the integration of multiple agroec…

Horticultural performance of 23 Sicilian olive genotypes in hedgerow systems: Vegetative growth, productive potential and oil quality

2017

Abstract The super high density (SHD) model is a new olive growing system characterized by earlier and higher yields, fully mechanized harvesting and reduced orchard management costs. Until recently all commercial SHD orchards were planted primarily with three varieties: ‘Arbequina’, ‘Arbosana’ and ‘Koroneiki’. To increase variety diversity, broaden available olive oil chemical and organoleptic profiles, and olive oils for marketing, minor local varieties should be evaluated for adaptability to the SHD system. This study compares multiple Sicilian native genotypes to the three current cultivars ‘Arbequina’, ‘Arbosana’ and ‘Koroneiki’. The cumulative fruit and oil production, trunk-cross sec…

Jonathan Sterne, The Audible Past: Cultural Origins of Sound Reproduction. Duke University Press, Durham & London, 2003. 450 pp. Paperback. ISBN …

2004

Il progetto EFIAN per Noto Antica, indagine storica e rappresentazione digitale: un connubio necessario

2017

Il progetto “Experimental Fruition Ingenious Ancient Noto” (E.F.I.A.N) cofinanziato dal M.I.U.R nell’ambito di fondi dedicati all’incentivazione delle start up, costituisce l’ultima iniziativa, in ordine di tempo, rivolta allo studio, alla salvaguardia e alla valorizzazione del sito archeologico di Noto Antica, città distrutta e poi abbandonata in seguito al terremoto del 1693 che devastò la Sicilia sud-orientale. Lo scopo del progetto EFIAN, avviato nel 2014 e concluso nell’ ottobre 2016, è stato quello di incrementare le potenzialità attrattive della antica Noto, nell’ambito del turismo culturale, attraverso i supporti multimediali, fruibili sia nella sede museale di Noto, destinata alla …

A trade-off between current and future sex allocation revealed by maternal energy budget in a small mammal.

2011

Sex-allocation theories generally assume differential fitness costs of raising sons and daughters. Yet, experimental confirmation of such costs is scarce and potential mechanisms are rarely addressed. While the most universal measure of physiological costs is energy expenditure, only one study has related the maternal energy budget to experimentally controlled offspring sex. Here, we experimentally test this in the bank vole (Myodes glareolus) by simultaneously manipulating the litter's size and sex ratio immediately after birth. Two weeks after manipulation, when mothers were at the peak of lactation and were pregnant with concurrent litters, we assessed their energy budget. We found that …

Influence of core color on final shade reproduction of zirconia crown in single central incisor situation ? An in vivo study

2020

Background A lot of shaded zirconia blocks are being introduced into the market. Their effect on the final shade of the restoration is yet uncertain. Material and methods Twenty-four zirconia crowns were fabricated for 8 patients who needed to restore a single maxillary central incisor, and divided into 3 groups according to the color and type of the zirconia (Zr) used (white Zr core, colored Zr core, and monolithic high translucency (ht) Zr crowns). Using Easyshade spectrophotometer, delta E color difference was calculated between fabricated crown and adjacent tooth. The ΔEs obtained were assessed based on 1.6 ΔE which represented the color difference that could not be detected by the huma…

Morphological Characterization of Nordic Horseradish (Armoracia rusticana)

2019

AbstractMorphological diversity was studied in 101 accessions of horseradish (Armoracia rusticana) collected from old gardens in Denmark, Norway, Finland and Sweden. The characterization work was performed over three years, where a total of 19 descriptors from the UPOV guidelines TG/191/2-2001 were recorded each year. The results showed high diversity among the studied accessions, both for leaf and rhizome characters. A morphotype with long leaves and a high leaf length/leaf width quota was the most common, but also elliptic and heart-shaped leaf types were found. Some characters showed stability over the years, although there were variations in the results. Correlations between descriptors…

Cost of reproduction in Callosobruchus maculatus: effects of mating on male longevity and the effect of male mating status on female longevity.

2005

One of the most studied life-history trade-offs is that resulting from the cost of reproduction: a trade-off arises when reproduction diverts limited resources from other life-history traits. We examine the cost of reproduction in male, and the effect of male mating status on female Callosobruchus maculatus seed beetles. Cost of reproduction for male C. maculatus was manifested as reduced longevity. There was also a positive relationship between male body size and male longevity. Females mated to males that had already copulated twice did not live as long as females mated to males that had copulated once or not at all. The third copulation of males also lasted longer than the two previous o…

Experimental assessment of the fecundity of Eucypris virens (Ostracoda, Crustacea) under natural sex ratios

2007

Summary 1. The adaptive significance of the observed variations in sex ratios in non-marine ostracods is unclear. This study quantified the fecundity of females taken from a presumed fully sexual Eucypris virens population that were experimentally combined with different proportions of males (male : female sex ratios: 1 : 1, 1 : 2, 1 : 4, 1 : 8 and 0 : 1). 2. The results yielded no indications that female fecundity is altered by short-term variations in the proportion of males, at least not within the range of sex ratios that are common in natural ostracod populations. Complete removal of males, however, did strongly reduce hatching success of dried eggs. This suggests the need for multiple…