Search results for "Silo"
showing 10 items of 412 documents
Distributed Consensus in Noncooperative Inventory Games
2009
This paper deals with repeated nonsymmetric congestion games in which the players cannot observe their payoffs at each stage. Examples of applications come from sharing facilities by multiple users. We show that these games present a unique Pareto optimal Nash equilibrium that dominates all other Nash equilibria and consequently it is also the social optimum among all equilibria, as it minimizes the sum of all the players’ costs. We assume that the players adopt a best response strategy. At each stage, they construct their belief concerning others probable behavior, and then, simultaneously make a decision by optimizing their payoff based on their beliefs. Within this context, we provide a …
Search for a Stable Six-Quark State at BABAR
2019
Recent investigations have suggested that the six-quark combination uuddss could be a deeply bound state (S) that has eluded detection so far, and a potential dark matter candidate. We report the first search for a stable, doubly strange six-quark state in Upsilon -> S anti-Lambda anti-Lambda decays based on a sample of 90 million Upsilon(2S) and 110 million Upsilon(3S) decays collected by the BABAR experiment. No signal is observed, and 90% confidence level limits on the combined Upsilon(2S,3S) -> S anti-Lambda anti-Lambda branching fraction in the range (1.2-1.4)x10^-7 are derived for m_S < 2.05 GeV. These bounds set stringent limits on the existence of such exotic particles.
New Computational Fluid Dynamic Procedure to Estimate Friction and Local Losses in Coextruded Drip Laterals
2007
The design of trickle irrigation systems is crucial to optimize profitability and to warrant high values for the emission uniformity (EU) coefficient. EU depends on variation of the pressure head due to head losses along the lines and elevation changes, as well as the water temperature, and other parameters related to the emitters (manufacturer's coefficient of variation, number of emitters per plants, emitter spacing). Trickle irrigation plants are usually designed using small diameter plastic pipes (polyethylene or polyvinyl chloride). The design problem, therefore, needs to consider head losses along the lines as well as emitter discharge variations due to the manufacturer's variability.…
Dynamic covalent urea bonds and their potential for development of self-healing polymer materials
2019
Self-healing polymer materials have drawn rapidly increasing interest over the last decade, and have been studied and used in an ever-increasing range of applications. Herein, we successfully make the covalent urea bond – a pinnacle of stability due to strong resonance effects – dynamic in nature through mediation of zinc salts. The dynamic covalent character of urea in the presence of zinc ions is confirmed through dissociation reaction experiments and quantum chemical calculations of small-molecule model urea compounds. In line with our experiments, the modelling results suggest that the presence of zinc ions speeds up the reaction of urea dissociation by two orders of magnitude via the f…
Une occupation agro-pastorale de la transition Hallstatt final / La Tène ancienne aux confins de Corquilleroy et Treilles-en-Gâtinais
2020
National audience; Le site de Corquilleroy “la Grevasse”/Treilles-en-Gâtinais “le Soy ” (45) est une occupation agropastorale à cheval entre la fin du premier et le début du second âge du Fer. Une batterie de 32 silos,autour desquels se développent des ensembles architecturaux à quatre ou six poteaux, ainsi que quelques fosses éparses composent l’essentiel de l’occupation. Le mobilier découvert, principalement de la céramique et de la faune, consiste en de riches rejets domestiques provenant quasi exclusivement des comblements des structures de stockage. Le répertoire des céramiques est varié suggérant ainsi des utilisations multiples (stockage, cuisine, préparation et présentation) et la v…
Hettangian ammonites from the old iron mine of Beauregard (Thoste, Côte-d’Or, France).
2012
The ammonite fauna of the old iron mine of Beauregard is reviewed. Only nine specimens from this locality are presently known. They are housed in the collections of the “Musée de Semur-en-Auxois”, of the “Muséum national d’Histoire naturelle” (Paris) and of the “Ecole Nationale Supérieuredes Mines” (Claude Bernard University, Lyon 1). The age, or possibly the ages, of these ammonites remain to precise in a coarsely defined time-span including the upper part of the early Hettangian and the middle Hettangian (pro parte?). These fossils, usually finely preserved, were collected during the nineteenth century thanks to intensive mining in the Thoste-Beauregard area. They are illustrated uniforml…
Comparative Study of Different Column Types for the Separation of Polar Basic Hallucinogenic Alkaloids
2016
The number of hallucinogenic compounds that have been separated simultaneously by liquid chromatography is limited. This research aimed to identify a column(s) that can allow for separation of several hallucinogens. The extent of separation of seven polar hallucinogenic tryptamine and phenethylamine derived alkaloids containing a basic N atom that becomes protonated at low pH values were investigated on five reverse-based columns and one hydrophilic interaction liquid chromatography (HILIC) column. An RP-phenyl and a negatively charged fused core HILIC were identified and recommended as effective columns in this regard. This research is the first to introduce a HILIC column in separation of…
Introduzione. Peculiarità dell’immigrazione in Sicilia
2010
Cosa accade quando, dopo un viaggio tribolato e lungo alla volta dell’Europa, terra di opulenza e diritti, si finisce in una sua periferia malandata, quale il Mezzogiorno italiano? Cosa succede a quei migranti che per scelta, per caso o per forza si ritrovano in Sicilia, regione da cui ancor oggi si emigra per cercar fortuna altrove? L’evidente differenza tra Settentrione e Meridione non è tenuta in giusto conto quando si riflette sul fenomeno dell’immigrazione in Italia. Si tralascia di osservare che se le condizioni economiche, la cultura, il tessuto sociale della regione in cui i migranti si inseriscono variano, varieranno anche i rapporti tra autoctoni e stranieri, il ruolo economico as…
Gold nanoparticles grown on a hydrophobic and texturally tunable PDMS-like framework
2021
Mesoporous silicas are among the most suitable high-surface area solids to support small-sized metal clusters and nanoparticles. Unfortunately, the instability of silica in water constitutes a serious impediment for its widespread use and large implementation as a catalytic support for fine chemical synthesis and for biomass upgrading in the context of biorefineries. While end cupping silanols provides a way for delaying framework degradation, further investigations are needed to design more robust, water-resistant supports. Prompted by the success of polydimethylsiloxane (PDMS) in surface coating and water-repellent technologies, we herein explore the transformation of triethoxysilyl-funct…
Dosing of caspofungin based on a pharmacokinetic/pharmacodynamic index for the treatment of invasive fungal infections in critically ill patients on …
2017
Abstract Introduction The study objective was to evaluate the efficacy of different dosages of caspofungin in the treatment of invasive candidiasis and aspergillosis, in relation to the probability of pharmacokinetic/pharmacodynamic (PK/PD) target attainment, using modelling and Monte Carlo simulations in critically ill adult patients on continuous haemodiafiltration. Methods Critically ill adult patients on continuous venovenous haemodiafiltration treated with caspofungin were analysed. A population PK model was developed. Four caspofungin dosing regimens were simulated: the licensed regimen, 70 mg/day, 100 mg/day or 200 mg/day. A PK/PD target was defined as the ratio between the area unde…