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Jacek Kitowski - One of the best experts on this subject based on the ideXlab platform.

Abdeltif Amrane - One of the best experts on this subject based on the ideXlab platform.

  • combined electrochemical treatment biological process for the removal of a Commercial herbicide Solution u46d
    Separation and Purification Technology, 2014
    Co-Authors: Jean-marie Fontmorin, J. Siguié, Florence Fourcade, Florence Geneste, Didier Floner, Isabelle Soutrel, Abdeltif Amrane
    Abstract:

    Abstract The removal of a Commercial Solution of 2,4-D, U46D®, was carried out by coupling an electrochemical oxidation and a biological process involving activated sludge. The similar electrochemical behavior of 2,4-D and U46D® highlighted their oxidation around 1.6 V/SCE and the feasibility of an electrochemical pretreatment. It was based on a home-made flow cell involving bare graphite felt electrode. To propose a consistent mechanism for 2,4-D oxidation, the indirect determination of OH has been performed and the absence of radicals formation during 2,4-D electrolysis was confirmed. Consequently, the proposed pretreatment can be considered as a ‘direct’ electrochemical process instead of an advanced electrochemical oxidation process. The impact of the flow rate on the pretreatment showed that 3 mL min −1 was a good compromise between the pretreatment time and the electrolysis efficiency, since it led to an almost total degradation of the pollutant while its mineralization remained limited. At this flow rate and for 500 mg L −1 of 2,4-D, the energy cost was estimated at 5 kW h m −3 . The biodegradability of U46D® Solution was not significantly modified after electrolysis, most likely due to the presence of dimethylamine salt in U46D®. Owing to the significant BOD 5 /COD ratio measured, a biological treatment of the Commercial U46D® Solution was however considered. The electrochemical pretreatment shortened the duration of the biodegradation. For non-pretreated U46D® (100 mg L −1 2,4-D), mineralization remained limited until 6 days of culture (33.7% DOC removal), and total removal of the DOC was observed after 8 days. For pretreated U46D®, 63.7% decrease until the fifth day of culture was observed but total mineralization was not reached at the end of culture (72.1%). An overall mineralization yield during the coupled process of 82.1% was therefore reached. The presence of refractory compounds generated during the electrochemical pretreatment in small concentration was therefore shown.

  • Combined electrochemical treatment/biological process for the removal of a Commercial herbicide Solution, U46D
    Separation and Purification Technology, 2014
    Co-Authors: Jean-marie Fontmorin, J. Siguié, Florence Fourcade, Florence Geneste, Didier Floner, Isabelle Soutrel, Abdeltif Amrane
    Abstract:

    The removal of a Commercial Solution of 2,4-D, U46D , was carried out by coupling an electrochemical oxidation and a biological process involving activated sludge. The similar electrochemical behavior of 2,4-D and U46D highlighted their oxidation around 1.6 V/SCE and the feasibility of an electrochemical pretreatment. It was based on a home-made flow cell involving bare graphite felt electrode. To propose a consistent mechanism for 2,4-D oxidation, the indirect determination of OH has been performed and the absence of radicals formation during 2,4-D electrolysis was confirmed. Consequently, the proposed pretreatment can be considered as a 'direct' electrochemical process instead of an advanced electrochemical oxidation process. The impact of the flow rate on the pretreatment showed that 3 mL min 1 was a good compromise between the pretreatment time and the electrolysis efficiency, since it led to an almost total degradation of the pollutant while its mineralization remained limited. At this flow rate and for 500 mg L 1 of 2,4-D, the energy cost was estimated at 5 kWh m 3. The biodegradability of U46D Solution was not significantly modified after electrolysis, most likely due to the presence of dimethylamine salt in U46D . Owing to the significant BOD5/COD ratio measured, a biological treatment of the Commercial U46D Solution was however considered. The electrochemical pretreatment shortened the duration of the biodegradation. For non-pretreated U46D (100 mg L 1 2,4-D), mineralization remained limited until 6 days of culture (33.7% DOC removal), and total removal of the DOC was observed after 8 days. For pretreated U46D , 63.7% decrease until the fifth day of culture was observed but total mineralization was not reached at the end of culture (72.1%). An overall mineralization yield during the coupled process of 82.1% was therefore reached. The presence of refractory compounds generated during the electrochemical pretreatment in small concentration was therefore shown

Luciano Tarricone - One of the best experts on this subject based on the ideXlab platform.

  • Characterization system for radiation pattern and sensitivity estimation of UHF RFID tags
    2015 IEEE International Symposium on Antennas and Propagation & USNC URSI National Radio Science Meeting, 2015
    Co-Authors: Riccardo Colella, Luca Catarinucci, Paolo Coppola, Luciano Tarricone
    Abstract:

    This work presents a characterization system for the performance evaluation of UHF RFID tags. It is based on a programmable and GPIO-provided UHF RFID reader connected to a circularly polarized antenna and driving a stepper motor to modify the tag orientation. The comparison with a Commercial Solution in terms of tag sensitivity and radiation pattern demonstrates the appropriateness of the proposed approach.

  • Cost-effective electromagnetic characterization system for radiation pattern and sensitivity estimation of UHF RFID tags
    2015 IEEE 15th Mediterranean Microwave Symposium (MMS), 2015
    Co-Authors: Riccardo Colella, Luca Catarinucci, Paolo Coppola, Luciano Tarricone
    Abstract:

    The performance evaluation of radio-frequency identification (RFID) tags is an important task both for tag designers and final users. Approaches based on the use of Vector Network Analyzers rather than conventional RFID readers only provide partial characterizations. On the contrary, Commercial Solutions, although they are able to guarantee an accurate and complete performance evaluation, require significant investment. This work presents a cost-effective but accurate characterization system for the performance evaluation of UHF RFID tags. It is based on a programmable and GPIO-provided UHF RFID reader connected to a circularly polarized antenna and driving a stepper motor to modify the tag orientation. The system is able to determine the minimum power emitted by the interrogating reader capable to energize the tag under test, and to derive from it the most significant metrics characterizing the tags: maximum and angular tag sensitivity, maximum and angular working range, and tag antenna radiation pattern. The proposed UHF RFID tag characterization system is validated through comparison with a Commercial Solution in terms of tag sensitivity and radiation pattern which demonstrate the correctness of the proposed approach.

Darin Nikolow - One of the best experts on this subject based on the ideXlab platform.

Shelley Lucas - One of the best experts on this subject based on the ideXlab platform.

  • nike s Commercial Solution girls sneakers and salvation
    International Review for the Sociology of Sport, 2000
    Co-Authors: Shelley Lucas
    Abstract:

    In this article I critically examine the ways in which Nike has situated itself as an active participant in current cultural conversations about girls' and women's participation in sport through three television Commercials: `If you let me play', `There's a girl being born in America', and `The Fun Police'. In these advertisements, Nike positions itself as helping girls get a chance to play sports, helping them lead healthier and happier lives, helping them learn the rules of the game, and helping them to have fun. However, I argue that Nike's suggestion that girls can be empowered through sport (and through Nike's efforts) occurs within a framework of discourses appearing in the Commercials that, in effect, constrains girls by representing them as lacking their own agency.

  • Nike’s Commercial Solution: Girls, Sneakers, and Salvation
    International Review for the Sociology of Sport, 2000
    Co-Authors: Shelley Lucas
    Abstract:

    In this article I critically examine the ways in which Nike has situated itself as an active participant in current cultural conversations about girls' and women's participation in sport through three television Commercials: `If you let me play', `There's a girl being born in America', and `The Fun Police'. In these advertisements, Nike positions itself as helping girls get a chance to play sports, helping them lead healthier and happier lives, helping them learn the rules of the game, and helping them to have fun. However, I argue that Nike's suggestion that girls can be empowered through sport (and through Nike's efforts) occurs within a framework of discourses appearing in the Commercials that, in effect, constrains girls by representing them as lacking their own agency.