Search results for "hiver"
showing 10 items of 42 documents
Retracted: Do patients profit from physostigmine in recovery from desflurane anaesthesia?
2007
Background: Physostigmine is the drug of choice in the central anticholinergic syndrome, but has also been used in post-operative mental derangement secondary to sedatives and volatile anaesthetics. The aim of this double-blind, randomized, prospective study was to determine whether physostigmine alters recovery after desflurane anaesthesia. Methods: One hundred patients undergoing urologic or surgical procedures were enrolled to receive either NaCl 0.9% (n= 50) or 2 mg of physostigmine (n= 50) at the end of general anaesthesia with propofol, fentanyl, cisatracurium and desflurane. Times to extubation, stating name, birthday and place of residence, and obeying commands such as eye opening…
Comparative study of degassing membrane modules for the removal of methane from Expanded Granular Sludge Bed anaerobic reactor effluent
2016
Abstract The feasibility of an emergent technology for in situ removal/recovery of methane from the effluent of an Expanded Granular Sludge Bed (EGSB) anaerobic reactor has been studied. For this purpose, the performances of two commercial hollow fibre degassing contactors with different membrane materials – microporous (polypropylene, PP) and non-porous (polydimethylsiloxane, PDMS) – were compared. The influence of water fluxes (Q L /A membrane ranging from 22.6 to 377.4 L h −1 m −2 ), vacuum pressure (140–800 mbar), sweep gas fluxes (Q N2 /A membrane ranging from 0.14 × 10 3 to 4.44 × 10 3 L h −1 m −2 ), and mode of operation (liquid flowing in the lumen side or the shell side) was stu…
Demethanization of aqueous anaerobic effluents using a polydimethylsiloxane membrane module: Mass transfer, fouling and feasibility
2017
Abstract The performance, fouling and feasibility of a polydimethylsiloxane hollow fibre membrane module for in situ methane degasification from the effluent of an Expanded Granular Sludge Bed anaerobic reactor has been investigated. Experiments at different operational conditions were carried out (liquid flow, sweep gas flow and vacuum pressure) with maximum removal efficiency (77%) at lowest flow-rate (0.4 L h−1), highest vacuum gauge pressure (−800 mbar) and liquid flowing in lumen side. Mass transport analysis denoted a considerably higher methane transfer than that predicted (attributed to liquid oversaturation). An enhancement factor for liquid phase has been proposed to correlate the…
Investigation of Side Effects of Plasmaexchange In the Treatment of Thrombotic Thrombocytopenic Purpura
2010
Abstract Abstract 4661 Introduction: Thrombotic thrombocytopenic purpura (TTP) is characterized by thrombocytopenia, hemolytic anemia and microthrombi. A deficiency of the metalloprotease ADAMTS 13, which cleaves a Tys1605-Met1606 bond in the A2 subunit of von Willebrand factor (VWF), leads to formation of ultra large von Willebrand multimers (UL-VWF) and can cause platelet aggregation and mircovascular thrombosis. Treatment of choice is the substitution of plasma with plasmaexchange. There are two different plasma types available: Fresh Frozen Plasma (FFP) and solvent/detergent (s/d) treated plasma. This treatment may carry significant risks and side effects for the patients. Therefore we …
Winter long dry spells in the Mediterranean basin and associated atmospheric conditions : contemporary and future variability (1957-2100)
2017
In the context of climate change, as reflected by a dryer Mediterraneanbasin, this thesis focused on the study of the contemporary and future variability(1957-2100) of the wintertime (September to April) very long dryspells events (called VLDSe) in the Mediterranean basin. An original methodologywas developed in this thesis in order to define VLDSe as singularclimatic events, characterized by location, duration and spatial extent criteria.76 VLDSe were detected in the Mediterranean basin on the contemporaryperiod (1957-2013). These events are divided into 4 main geographicalpatterns: North-East, West, Scattered Localized and South-East. North-East and West configurations are associated with…
Siderophore typing, a powerful tool for the identification of fluorescent and nonfluorescent Pseudomonas
2002
ABSTRACT A total of 301 strains of fluorescent pseudomonads previously characterized by conventional phenotypic and/or genomic taxonomic methods were analyzed through siderotyping, i.e., by the isoelectrophoretic characterization of their main siderophores and pyoverdines and determination of the pyoverdine-mediated iron uptake specificity of the strains. As a general rule, strains within a well-circumscribed taxonomic group, namely the species Pseudomonas brassicacearum , Pseudomonas fuscovaginae , Pseudomonas jessenii , Pseudomonas mandelii , Pseudomonas monteilii , “ Pseudomonas mosselii ,” “ Pseudomonas palleronii ,” Pseudomonas rhodesiae , “ Pseudomonas salomonii ,” Pseudomonas syringa…
RF fingerprinting for user locationing in LTE/WLAN networks
2016
Location based applications and services have become popular in many wireless communication devices. This thesis study presents a performance evaluation of Radio Frequency (RF) fingerprinting framework in heterogeneous Long Term Evolution (LTE) and Wireless Local Area Networks (WLAN) using Minimization of Drive Testing (MDT) measurements which allow automated construction of extensive RF fingerprint training databases. Utilization of MDT data could create additional opportunities for service provider and application developers. Typical RF fingerprint consist of radio measurements from multiple LTE transceiver stations and WLAN access points. Regardless environmental conditions, received sig…
Klusterointi radiotaajuuspaikannuksessa
2017
Mobiililaitteiden tarkalla paikantamisella on tärkeä rooli nykyisissä ja tulevissa langattomiin verkkoihin perustuvissa sovelluksissa. GPS-paikannus on yleisesti käytetty, mutta se suoriutuu kehnosti sisätiloissa ja saattaa ruuhkahuippujen aikana olla kykenemätön suorittamaan kaikkia paikannuspyyntöjä tehokkaasti. Mobiiliverkossa paikannus voidaan suorittaa kolmiomittauksen avulla, joka vaatii kuitenkin aktiivisen puhelun. Paikkatieto mahdollistaa verkko-operaattoreille ajantasaisen statistiikan keräämisen muuttuvassa radioverkkoympäristössä. Se auttaa myös parantamaan tilannetietoisuutta onnettomuuksien ja pelastusoperaatioiden aikana. Langattomien verkkojen massiivista dataa ei vielä ole …
To quiver or to shiver: increased melanization benefits thermoregulation, but reduces warning signal efficacy in the wood tiger moth
2013
Melanin production is often considered costly, yet beneficial for thermoregulation. Studies of variation in melanization and the opposing selective forces that underlie its variability contribute greatly to understanding natural selection. We investigated whether melanization benefits are traded off with predation risk to promote observed local and geographical variation in the warning signal of adult male wood tiger moths ( Parasemia plantaginis ). Warning signal variation is predicted to reduce survival in aposematic species. However, in P. plantaginis , male hindwings are either yellow or white in Europe, and show continuous variation in melanized markings that cover 20 to 90 per cent o…
The Effects of Cold Exposure on Leukocytes, Hormones and Cytokines during Acute Exercise in Humans
2014
The purpose of the study was to examine the effects of exercise on total leukocyte count and subsets, as well as hormone and cytokine responses in a thermoneutral and cold environment, with and without an individualized pre-cooling protocol inducing low-intensity shivering. Nine healthy young men participated in six experimental trials wearing shorts and t-shirts. Participants exercised for 60 min on a treadmill at low (LOW: 50% of peak VO2) and moderate (MOD: 70% VO2peak) exercise intensities in a climatic chamber set at 22°C (NT), and in 0°C (COLD) with and without a pre-exercise low-intensity shivering protocol (SHIV). Core and skin temperature, heart rate and oxygen consumption were col…