Search results for "CROP"
showing 10 items of 3837 documents
Towards Automated Classification of Firmware Images and Identification of Embedded Devices
2017
Part 4: Operating System and Firmware Security; International audience; Embedded systems, as opposed to traditional computers, bring an incredible diversity. The number of devices manufactured is constantly increasing and each has a dedicated software, commonly known as firmware. Full firmware images are often delivered as multiple releases, correcting bugs and vulnerabilities, or adding new features. Unfortunately, there is no centralized or standardized firmware distribution mechanism. It is therefore difficult to track which vendor or device a firmware package belongs to, or to identify which firmware version is used in deployed embedded devices. At the same time, discovering devices tha…
Parasite avoidance behaviours in aquatic environments
2018
Parasites, including macroparasites, protists, fungi, bacteria and viruses, can impose a heavy burden upon host animals. However, hosts are not without defences. One aspect of host defence, behavioural avoidance, has been studied in the terrestrial realm for over 50 years, but was first reported from the aquatic environment approximately 20 years ago. Evidence has mounted on the importance of parasite avoidance behaviours and it is increasingly apparent that there are core similarities in the function and benefit of this defence mechanism between terrestrial and aquatic systems. However, there are also stark differences driven by the unique biotic and abiotic characteristics of terrestrial …
Drought Stress Study on Nicotiana tabacum L., “Baladi”, an In Vitro Experimental Model
2021
Crops drought tolerance is a trait of outmost importance for agriculture especially today when climate change is affecting more the production for food and feed. The scope of this article is to evaluate in vitro drought stress response of Nicotiana tabacum L., “Baladi”. The experiment was set up for four successive stages starting with in vitro seedling development, hypocotyl cultivation, three generations of micropropagation, pre-acclimatization and acclimatization. The effect of abscisic acid (ABA) and/or polyethylene-glycol 6000 (PEG) on tobacco hypocotyl caulogenesis and micropropagation were investigated. Superoxide-dismutases (SODs) and peroxidases (POXs) are more active and different…
Mycorrhizae in crop production
2007
International audience; It has been a revelation that, strictly speaking, most plants do not have roots but rather mycorrhizae, a fact that has had tremendous consequences on the life of plants and the evolution of soil-plant systems. The research on arbuscular mycorrhizal (AM) symbioses has been intensive over the past forty years and we have learned a lot on the physiology, biology, ecology, and genetics of the symbiosis and the fungi involved in it. Most important, it appeared that cropping systems could be more sustainable with the management of AM fungi and reduced reliance on agrochemicals. The extraradical mycelia of AM fungi are an essential link between the plants, which are the co…
Sustainable Fertilization in Medicinal and Aromatic Plants
2015
The nutrient level in the soil is one of the most investigated aspects of agricultural research, also including research into Medicinal and Aromatic plants. The effect of fertilization has been studied in detail for many species, with contrasting results as concerns above all the qualitative aspects of production. Generally speaking, an increased level of nutrients induces an enhancement of plant biomass, but when the goal of cultivation is different from herbage yield, i.e. when a special plant part (seeds, or roots, or flowers) is of interest, or when the quality features are especially important, the outcome of fertilization may be dramatically different. A fine-tuned fertilization pract…
Effects of arbuscular mycorrhizal symbiosis on nitrogen dynamics in Mediterranean agro-ecosystems
2010
Le simbiosi arbuscolo micorriziche (AM) sono formate dai funghi appartenenti al phylum Glomeromicota e piante superiori. Le simbiosi (AM) sono caratterizzate dalla penetrazione attiva del fungo dentro negli spazi intercellulari della cortaccia radicale e dalla formazione di strutture di scambio (chiamate ‘arbuscoli’) all’interno della parere cellulare. Gli arbuscoli sono strutture ramificate formate dal fungo AM all’interno della cellula vegetale invasa e sono indubbiamente gli organi chiave della simbiosi. Durante la loro formazione, la cellula vegetale si trasforma radicalmente. In particolare, la membrana cellulare si invagina e una membrana periarbuscolare con una ampia superficie di sc…
Extensional deformations during Neogene chain building in Sicily
2010
ABSTRACT In the Madonie-Nebrodi Mts (Northern Sicily belt) both Mesozoic carbonate platform/basin-derived deformed successions and Neogene foredeep deposits outcrop. Thrust sheets piled-up southwards in thin-skin piggy-back sequence. The chain building process began during the Oligo-Miocene. The syntectonic deposits involved in the compressional tectonics give evidence that syn-sedimentary extensional faults developed during fold nucleation and amplification. Syn-sedimentary extensional faults affect the foredeep strata at different stratigraphic levels, which are bounded by unconformities. Normal faults and bedding show constant cut-off relationships and are progressively tilted youngwards…
Early Jurassic (Sinemurian) gastropods from the Lusitanian Basin (west of Portugal)
2020
The Sinemurian gastropod specimens herein studied come from two sources: from museum collections and from samplings in field. The study of the Sinemurian gastropod specimens housed in the collections of the Museu Geológico (Laboratório Nacional de Energia e Geologia), Museu Nacional de História Natural e da Ciência (University of Lisbon), Museu da Ciência (University of Coimbra) and of the Museu de História Natural e da Ciência (University of Porto), has allowed the systematic and taxonomical update of this material. These specimens come mostly from Sinemurian outcrops in S. Pedro de Moel area and Coimbra region, and were collected by Paul Choffat and collaborators in the geological field w…
La tuilerie antique de Hombourg-Budange, Moselle
2016
The archaeological excavation undertaken in 2006 by the Institut national de recherches archéologiques preventives (Inrap) at the site “Le Clos des Tourelles” in Hombourg-Budange (Moselle, France) unearthed a Gallo-Roman tilery. It situated close to a medieval site, the initial target of the excavation project. The time span of the Gallo-Roman occupation cannot be stated with accuracy; only its abandonment can be dated to be later than 250 AD. The remains of the tilery are assembling a kiln, drains, a hall, a well, and, among other features, a small building. The plan and arrangement of the different features are représenting the whole working process of the tile production and, additionall…
Bilan sur les nécropoles du Bas-Empire en Franche-Comté.
2020
Sur les 94 sites funéraires antiques recensés en Franche-Comté, vingt et un seulement concernent le Bas-Empire. Malgré la faiblesse du corpus et des données anciennes, la comparaison entre ces quelques sites et ceux du Haut-Empire permet déjà de proposer quelques réflexions quant à l’évolution des rites funéraires. Les offrandes démontrent l’existence de deux rites funéraires assez répandus : le repas destiné au défunt et le dépôt de monnaie. De prime abord, en Franche-Comté, les offrandes funéraires des sépultures à incinération semblent nettement plus variées que celles découvertes dans les inhumations du Bas-Empire. Faut-il y voir une épuration du rituel funéraire ? Ce dernier semble dor…