1,168 research outputs found
Introduction to probabilistic concurrent systems
No full textThe first part of the paper is an introduction to the theory of probabilistic
concurrent systems under a partial order semantics. Key definitions and results
are given and illustrated on examples. The second part includes contributions.
We introduce deterministic concurrent systems as a subclass of concurrent
systems. Deterministic concurrent system are "locally commutative'" concurrent
systems. We prove that irreducible and deterministic concurrent systems have a
unique probabilistic dynamics, and we characterize these systems by means of
their combinatorial properties.Comment: Extended version of the Petri Net 2021 conference paper
arXiv:2008.07233 "Deterministic concurrent systems" by the same author. 32
pages, 9 figures, 17 reference
WITHDRAWN: Mullerian duct failure: An unusual case with adenomyosis managed with total hysterectomy
No full textThis article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause.The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy
Daily variation of fishing effort and ex-vessel prices in a western Mediterranean multi-species fishery: Implications for sustainable management
No full textThe daily variation of fishing effort and ex-vessel price was analysed to determine which day of the week is suitable to ban the fishery, as an alternative management measure to the one month seasonal closure. Thus, 10-years landings data were used from two representative trawling ports of the western Mediterranean: Dénia and La Vila Joiosa. Analysis of variance (ANOVA) was used to detect significant differences in fishing effort (total and by métier) and daily ex-vessel price of the main target species. Also, the economic loss produced by banning one day (the proposed measure) was compared to economic loss produced by the seasonal closure (the actual measure). Daily variation in the fishing effort was observed in La Vila Joiosa mainly due to higher effort at the end of the week devoted on crustacean métiers, while effort was similar among days in Dénia. The lowest mean prices for most target species were on Tuesday and Wednesday, and were higher on Monday and Friday. Banning one day per week (Tuesday or Wednesday), when market prices of target species are lower would reduce the double of effort than one month of seasonal closure, and likely without subsidies. However, the loss by banning all Wednesdays (approx. 50 days) was higher in both ports than one month, but lower than an equivalent two months closure.M. Samy-Kamal was supported by a grant of the Spanish Agency for International Cooperation for Development (AECID) MAEC-AECID (Nº0000593564)
Involvement of the ST2 alarmin interleukin-33 receptor in the phenomenon of renal ischemia/reperfusion : study of the influence of a hyperglycemic environment
No full textLa transplantation rénale (TR) est la stratégie thérapeutique de choix pour les insuffisances rénales terminales. L'utilisation de greffons de donneurs à critères étendus, tels les sujets diabétiques, est devenue une nécessité face à la pénurie de greffons, malgré le risque accru de dysfonction du greffon. L'ischémie/reperfusion (I/R) est une étape inhérente à la TR. Le diabète est un facteur de risque pour le développement de lésions rénales aiguës mais les mécanismes d'action mis en jeu restent à élucider. Il existe peu de données expérimentales sur les conséquences délétères du diabète sur les lésions d'I/R rénales. Nous avons fait l'hypothèse que l'IL-33, en tant qu'alarmine, joue un rôle clé au carrefour qui lie l'hyperglycémie à l'I/R.L'objectif de ce travail a été d'étudier l'effet de la délétion du récepteur ST2 de l'IL-33 sur les lésions d'I/R rénales dans un contexte hyperglycémique. Nous avons utilisé un modèle d'I/R rénale chez des souris transgéniques dépourvues du récepteur ST2. Le diabète type 1 a été induit par la streptozotocine. Nous avons démontré que la délétion du récepteur ST2 a un effet néphroprotecteur en situation euglycémique, suggérant un effet exacerbateur de l'IL-33 sur les lésions d'I/R rénales. Cette protection rénale a été perdue en condition hyperglycémique. L'ensemble de ces résultats suggère que l'IL-33, en tant qu'alarmine, a des effets différentiels en fonction de l'environnement hyperglycémique. Sur le plan clinique, compte tenu de l'impact néfaste du diabète sur le rein, nos résultats conduisent à proposer d'étudier la place d'IL-33 dans l’inflammation chronique associée au diabète et de ses conséquences sur la fonction rénale.Renal transplantation (RT) is the therapeutic strategy of choice for end-stage renal failure. The use of graft from extended criteria donors, including patients with diabetes, has become mandatory to cope with the shortage of grafts, despite an increased risk of graft dysfunction. Ischemia reperfusion (I/R) is a key step in RT. Diabetes is a risk-factor for the development of acute kidney injury (AKI), which mecanisms are not fully elucidated. Moreover, there are few experimental data on the deleterious effects of diabetes on ischemic AKI. We hypothesized that IL-33, as an alarmin, plays a key role at the crossroads linking hyperglycemia to I/R injury.The objective of this work was to study the effect of the deletion of the ST2 receptor of IL-33 on I/R injury in the context of hyperglycemic environment. We thus used a renal I/R model in transgenic mice lacking the IL-33 receptor (ST2). Type 1 diabetes was induced by streptozotocin. We demonstrated that the deletion of ST2 has a renal protective effect in euglycemic conditions, suggesting an exacerbating effect of IL-33 in renal I/R injury. The protective effect induced by the absence of ST2 was lost in hyperglycemic conditions. Taken together, these findings indicate that IL-33 exerts differential effects depending on hyperglycemia. Clinically, given the deleterious impact of diabetes on the kidney, our results lead to propose to further study the place of IL-33 in chronic inflammation associated with diabetes and its effects on renal function
UniCouncil_1922-25_089
No full textSCHOLARSHIP fees of a student in the College of Arts and Sciences as
a gift from Hr & Mrs Yan&ersall under the conditions outlined in their letter of September 15,1924*
415 DIPLOMAS On the recomnendation of the Faculty of the College of Arts
1 GEAITP5D and Sciences the Council approved the granting of diplomas
to the following persons for the year 1923-24©
ABES*
Hubar G* Arifian (2nd honours)
Art in Artinian Richard Llakram * Abayd Abd al ’Aziz M.al Asqalany Fahjoy * At yah Dicran K* Bahlave Mohammed Aly Abu Zayd Daud Gerair 0* Deirmen&jian.
Basiuny ’Abd al Wahab al Fishauy (2nd honours) Spiro Hashem ( 2nd honours)
Bar our Kourian Sarny Murqus Charles Rashid
Abd al Aziz ’Abd al G-liani Shafshaa (First honours) Mohammed Pawfik Shahatah Ara Pertzakian Edward Samy ’Abayd.
MM
Hnsayn Fathy Anis Found Yousif Girgis Eunayn Faris Ibrahim Mustafa Kamil Yus if Mikhail
416 ADJ0UR1TI.PFTP Phe Council adjourned*
*
Galt, Secy*
Pyrolysis kinetic behaviour and TG-FTIR-GC–MS analysis of Coronavirus Face Masks
No full textIn the times of Covid-19, face masks are considered to be the main source of protection against the virus that reduces its spread. These masks are classified as single-use medical products with a very short service life, estimated at few days, hence millions of contaminated masks are generated daily in the form of hazardous materials, what requires to develop a safe method to dispose of them, especially since some of them are loaded with viruses. 3-ply face masks (3PFM) represent the major fraction of this waste and are composed mainly from polypropylene and melt blown filter with high content of volatile substances (96.6 wt.%), what makes pyrolysis treatment an emerging technology that could be used to dispose of face masks and convert them into energy products. In this context, this work aims to study pyrolysis kinetic behaviour and TG-FTIR-GC–MS analysis of 3PFM. The research started with analysis of 3PFM using elemental analysis, proximate analysis, and compositional analyses. Afterwards, TG-FTIR system was used to study the thermal and chemical decomposition of 3PFM analyzed at different heating rates: 5, 10, 15, 20, 25, and 30 °C/min. The GC/MS system was used to observe the synthesized volatile products at the maximum decomposition temperatures. After that, isoconversional methods, the advanced nonlinear integral isoconversional method, and the iterative linear integral isoconversional method were used to determine the activation energies of mask pyrolysis, while the distributed activation energy model and the independent parallel reactions kinetic model were used to fit TGA and DTG curves with deviations belo
Effects of seasonal closures in a multi-specific fishery
No full textIn input-controlled multi-specific fisheries, seasonal closure has little biological rationale as a management measure, because it is difficult to adjust such closure for many target species and, in most cases, they are adopted for economic purposes. We aimed to determine effects of closure in biologic and economic terms, using 10-year landing data from two representative trawling ports of the Western Mediterranean: Dénia and La Vila Joiosa. Analysis of Variance (ANOVA) was used to detect significant differences, before and after the closure, in standardized catch per unit effort (CPUE) at different seasons and sale prices at home/closed and neighbour/open ports. ANOVAs showed significantly higher CPUE after the closure for total landings and Mullus spp. of the Red mullet métier, Merluccius merluccius CPUE (in two years) and the total landings of the Norway lobster métier. On the contrary, significant lower values were observed after the closure for total CPUE (in early summer) and Aristeus antennatus of Red shrimp métier. Similar CPUE was observed at all levels when the closure took place in late summer. In economic terms, market prices of target species have decreased or shown no changes after the closure at home/closed and neighbouring/open ports. The only exception was the significant increase of the price for A. antennatus in Dénia during the closure in La Vila Joiosa. Depending on its timing, the closure would highlight some positive biological effects on some target species. However, closure leads to an unavoidable reduction in most of target species prices. An alternative management measure that is based on effort reduction in input-controlled multi-specific fisheries could ban one day per week when market prices of target species are lower.M. Samy-Kamal was supported by a grant of the Spanish Agency for International Development Cooperation (AECID)
Production of hydrogen from water using a thermochemical copper-chlorine cycle
No full textA system for producing hydrogen gas from water decomposition using a thermochemical CuCl cycle, the improvement comprising the use of an insulated hydrogen production reactor comprising a reaction chamber and a separation chamber; the reaction chamber having a hydrogen chloride gas inlet and a solid copper inlet; one or more levels provided in the reaction chamber, the number of which is dependant on production scale and pressure drop; each level comprising a perforated plate with associated filter media, the perforations of the plate and media being of decreasing size from top to bottom of the reaction chamber, and being sized to permit downward flow of the hydrogen gas and molten CuCl products, as well as the HCL gas reactant, and to prevent entrainment of solid copper in the molten CuCl; the separation chamber being located below the reaction chamber and being of greater cross section than the reaction chamber and comprising a first hydrogen removal and entrained copper removal zone and a second molten CuCl removal zone; removal of the reaction products being controlled so as to substantially decrease the amount of entrained copper in the molten CuCl; and the first zone having outlets for removal of hydrogen gas and entrained copper particles, with the second zone having an outlet for removal of molten CuCl
Pricing exotic swing options on energy
No full textEThOS - Electronic Theses Online ServiceGBUnited Kingdo
- …
