<p>In electrochemical oxidation treatment of wastewater, the electrode material is an important parameter in optimizing oxidative electrochemical processes, since the mechanism and products of several anodic reactions are known to depend on the anode material. The electrochemical oxidation of benzaldehyde, nitrobenzene and m-cresol on bare boron-doped diamond (BDD) electrode was investigated. Cytochrome c was then electrochemically immobilsed onto the functionalized BDD electrode by cyclic voltammetry. Oxidation and reduction reaction mechanism of each flavonoid was studied. There was one oxidation and reduction peaks for quercitin and catechin respectively, and two oxidation and two reduction peaks for rutin. The cytochrome c modified BDD electrode showed good sensitivity for all three flavonoids and low detection limits i.e. 0.42 to 11.24 M as evaluated at oxidation and reduction peaks, respectively.</p>

<p>In electrochemical oxidation treatment of wastewater, the electrode material is an important parameter in optimizing oxidative electrochemical processes, since the mechanism and products of several anodic reactions are known to depend on the anode material. The electrochemical oxidation of benzaldehyde, nitrobenzene and m-cresol on bare boron-doped diamond (BDD) electrode was investigated. Cytochrome c was then electrochemically immobilsed onto the functionalized BDD electrode by cyclic voltammetry. Oxidation and reduction reaction mechanism of each flavonoid was studied. There was one oxidation and reduction peaks for quercitin and catechin respectively, and two oxidation and two reduction peaks for rutin. The cytochrome c modified BDD electrode showed good sensitivity for all three flavonoids and low detection limits i.e. 0.42 to 11.24 M as evaluated at oxidation and reduction peaks, respectively.</p>

L'usage intensif de pesticides dans l'agriculture engendre une contamination sans précédent des eaux de surface et des nappes phréatiques. Les traitements classiques appliqués aux eaux usées contenant des produits organiques polluants sont basés sur la biodégradation ou sur des méthodes physiques de transfert de masse (décantation, filtration, adsorption des polluants sur du charbon actif) ou des procédés chimique tels que l'oxydation à l'ozone ou au chlore. Cependant, ces procédés demeurent inefficaces dans le cas de traitement des eaux contaminées par les polluants organiques persistants (POPs). Les procédés d'oxydation avancés sont mis en œuvre pour dégrader ou même minéraliser ces polluants. Ce travail a donc pour objectif de déterminer un protocole expérimental pour détruire efficacement les pesticides, produits chimiques largement utilisés dans l'agriculture au Maroc, tels que le monochloro-benzène, le 1,2-dichlorobenzène, l'acide 2,4,5-trichlorophénoxy-acétique, et l'imazalil en utilisant les procédés d'oxydation avancée électro-Fenton et oxydation anodique avec différentes anodes telles que BDD, Pt et DSA. Ainsi, nous avons trouvé que le taux de minéralisation par procédé électro-Fenton avec l'anode BDD était de 92%, 95%, 92% et 97%pour le monochloro-benzène, le 1,2-dichlorobenzène, l'acide 2,4,5-trichlorophénoxy-acétique, et l'imazalil, respectivement, après 4 h de traitement. Ces résultats confirment l'efficacité des procédés d'oxydation avancés électrochimiques dans le traitement des eaux polluées par des pesticides / The intensive use of pesticides in agriculture generates, nowadays, an unprecedented contamination of surface water and groundwater. Conventional treatments applied to waste water containing organic pollutants are based on biological treatments méthods or physical mass transfer methods (decantation, filtration, adsorption of the pollutants on activated carbon), chemical oxidation with ozone, chlorine, etc. However, these methods remain ineffective for the treatment of water polluted by persistent organic pollutants (POPs). Advanced oxidation processes are implemented to degrade and mineralize these pollutants. This PhD thesis work aims to establish an experimental protocol to degrade and mineralize pesticides, chemicals widely used in agriculture in Morocco, such as monochlorobenzene, 1,2-dichlorobenzene, 2,4,5-trichlorophenoxy-acetic acid , and imazalil using the electro-Fenton and anodic oxidation processes with DD Pt or DSA anodes. Thus, the rate of mineralization was 92%, 95%, 92% and 97% for the monochloro-benzene, the 1,2-dichlorobenzene, the 2,4,5-trichlorophenoxyacetic acid , and the imazalil, respectively, after 4 h treatment by electro-Fenton process. These results confirm the effectiveness of electrochemical advanced oxidation processes for treating water polluted by pesticides

Magister Scientiae - MSc / In electrochemical oxidation treatment of wastewater, the electrode material is an important parameter in optimizing oxidative electrochemical processes, since the mechanism and products of several anodic reactions are known to depend on the anode material. The electrochemical oxidation of benzaldehyde, nitrobenzene and m-cresol on bare boron-doped diamond (BDD) electrode was investigated. Cytochrome c was then electrochemically immobilsed onto the functionalized BDD electrode by cyclic voltammetry. Oxidation and reduction reaction mechanism of each flavonoid was studied. There was one oxidation and reduction peaks for quercitin and catechin respectively, and two oxidation and two reduction peaks for rutin. The cytochrome c modified BDD electrode showed good sensitivity for all three flavonoids and low detection limits i.e. 0.42 to 11.24 M as evaluated at oxidation and reduction peaks, respectively. / South Africa

L'objectif du travail de recherche mené concerne l'élaboration des nouveaux matériaux d'électrodes modifiés pour des applications dans le domaine des biocapteurs. Le travail a été subdivisé en trois parties portant sur le greffage du sel de diazonium pour application immunocapteur, l'électroadressage des d'anticorps et l'électrodépôt d'un espaceur pour application aptacapteur. Dans la première partie de ce travail, nous nous sommes consacrés d'abord à l'électrogreffage du nitrobenzène diazonium sur la surface d'or pour le développement de capteurs immunologiques destinés à la détection de la bactérie Staphylococcus aureus. Une limite de détection de 10 UFC/mL a été atteinte. Dans la deuxième partie, la détection de l'ochratoxine A est présentée, basée sur l'électroadressage covalent de l'anticorps modifié par la fonction diazonium sur des électrodes de Diamant Dopé Bore (BDD). Une limite de détection de 0.007ng/mL a été obtenue et l'immunocapteur a été testé sur des échantillons réels. Enfin, on a développé un aptacapteur basé sur le greffage d'un espaceur (PEG) sur la surface des microcellules BDD pour la quantification de la biotoxine OTA. Une limite de détection de 0,01ng/L a été obtenue et application à un échantillon réel (le riz) a été démontrée. Les résultats obtenus, basés sur des méthodes électrochimiques de détection (variation de l'impédance ou du courant d'une sonde redox) sont encourageantes en termes de sensibilité, limite de détection, reproductibilité et spécificité / The objective of the research work was to the development of modified electrode materials for biosensor application. The work was devided into three parts: electrografting of diazonium salt for immunosensor application, electroadressing of antibodies and electrodeposition of PEG spacer for aptasensor application. In the first part of this work, the modification of gold surfaces with nitrobenzene diazonium cation was investigated in order to develop an immunosensors for the detection of Staphylococcus aureus. A detection limit of 10 CFU/mL has been obtained. The second part was focused on the electrically addressable deposition of diazonium functionalized antibodies on boron-doped diamond (BDD) microcells for the detection of OTA. A detection limit of 0.007ng/mL has been obtained and the immunosensor was tested on real samples. Finally, we developed an amperometric aptasensor based on electrochemical grafting of a PEG-COOH spacer on a BDD microcell for the detection of OTA biotoxin. A detection limit of 0.01 ng/L has been obtained and application to a real sample (rice) has been demonstrated. The amperometric and impedimetric techniques used in this work lead to promising results in terms of sensitivity, specificity and reproductibility

Compulsive repetitive behaviors and mental acts due to concerns about your appearance, are symptoms of body dysmorphic disorder (BDD). Previous research suggests that the compulsive behaviors found in people with BDD occur in online and offline settings (e.g., extensive editing of selfies intended for publication online and excessive mirror gazing offline). Also, previous research shows that BDD and social media use vary with age. Therefore, the current study aimed to examine age as a moderator in the relationship between compulsive behaviors online and the risk behaviors of BDD offline, through a cross-sectional design. The inclusion criteria for the study were being a minimum of 16 years old, a Swedish citizen and a user of social media. The data were collected through a survey, consisting of questions intended to screen for compulsive behaviors online in relation to appearance concerns, risk behaviors of BDD offline and the prevalence of BDD. The results showed that younger participants engaged in more compulsive behaviors online and risk behaviors of BDD. The group in high risk of BDD also engaged more in both behaviors, than participants in low risk of BDD. In addition, the results showed that age did act as a moderator in the relationship between compulsive behaviors online and risk behaviors of BDD. Age showed to especially affect the relationship between the number of compulsive behaviors online and risk behaviors of BDD in older participants. / Tvångsmässiga repetitiva beteenden och mentala handlingar som beror på oro kring sitt utseende, är symptom av dysmorfobi (BDD). Tidigare forskning visar att tvångsmässiga beteenden sker både online och offline (tex., överdriven redigering av selfies i syfte att publicera dem online och att spegla sig överdrivet mycket offline). Tidigare forskning visar även att BDD och sociala medier-användning varierar med ålder. Genom en tvärsnittsdesign ämnade därför denna studie att undersöka om ålder modererar relationen mellan tvångsmässigt beteende online och riskbeteende för BDD. Datainsamlingen bestod av ett frågeformulär med frågor kring tvångsmässigt beteende online i relation till oro kring utseendet, riskbeteende för BDD samt prevalensen av BDD. Inklusionskriterierna för att delta i studien var att vara minst 16 år gammal, svensk medborgare samt användare av sociala medier. Resultaten visade att de yngre deltagarna i studien utför både fler tvångsmässiga beteenden online samt fler riskbeteenden offline än de äldre deltagarna. Den grupp som ansågs ha hög risk för BDD utförde även båda beteendena mer än de deltagarna med låg risk för BDD. Resultaten visade vidare att ålder var en moderator i relationen mellan tvångsmässiga beteenden online och riskbeteenden för BDD. Mer specifikt hade en äldre ålder störst effekt på relationen mellan beteendena online och offline.

Behavior-driven development (BDD) is a development practice focusing on behaviors and requirements from users and stakeholders. It is designed to develop behaviors which contribute directly to system outcomes. BDD encourages multiple stakeholders to collaborate by minimizing communication gaps and create a shared understanding of the project between technical and non-technical speakers. As a result, the development process becomes faster and the cost lower. Although BDD has many benefits, there are teams who feel inertia towards using it as their main development practice.This thesis work took place at a company with a strong agile foundation. It had the goal to investigate reasons why teams feel inertia against BDD, and thus contribute to BDD research and assist the company. The assumption that positive motivation would help in dispelling inertia was the idea behind this thesis work, and that a stronger motivation for a practice can be achieved by assessing a team’s suitability for it. To reach the goal of the thesis a qualitative research methodology was used, with a focus on obtaining a better understanding of opinions and behaviors that exist, with rounds of interviews and forms as the main method of data collection. Interviews were also consistently used throughout the thesis work to validate that it followed the right track.The inertia which teams at the company have experienced was clustered into different dimensions. These dimensions were used to develop a self-assessment tool intended to help people starting a project to assess how well BDD might fit their context. It allows people to assess their inertia in the different dimensions identified, and as well as attempting to give an overall guide to readiness, also giving some recommendations where gaps could be identified.The deliverable of the thesis work is the tool for managing inertia against BDD. It was developed in a spreadsheet-format for quick development and easy access for multiple users. However, it is important to highlight that this tool focuses on agile autonomous teams. The tool is not about forcing the development practice on someone but rather acts as an aid in giving insight into how well BDD could work for a specific project and team. Finally, to grasp the validity of the tool teams who had previous success developing projects using BDD at the company were able to try it out to see how well it reflected their project reality. The tool also got tested on teams who felt strong inertia towards BDD, to verify whether it helped them manage it or not. / Beteendedriven utveckling (BDD), är ett arbetssätt som fokuserar på beteenden och krav från både användare och intressenter. Det är utvecklat för att främja och skapa beteenen som bidrar till det önskade målet. Några av BDDs fördelar är att arbetssättet uppmuntrar intressenterna till tätt samarbete, att minska luckor i kommunikation och information samt att det skapar en delad förståelse för projektet mellan teknisktoch icke-tekniskt kunniga intressenter. En positiv konsekvens av detta är att utvecklingen tenderar att bli snabbare och kostnaderna lägre. BDD ser till att alla inblandade är eniga om vilket resultat man kan förvänta sig från ett utvecklingsprojekt, redan innan utvecklingen börjar. Detta gör att de missförstånd som är vanligt förekommande mellan intressenter och utvecklingsteam reduceras. Trots att BDD, som nämnts, har flera fördelar finns det team som känner motstånd mot att använda BDD som sitt huvudsakliga arbetssätt.Antagandet att motivation kan bidra till att minska motståndet och att motivationen kan skapas genom att påvisa för team hur lämpligt BDD skulle vara för just dem var ideén bakom detta arbete. Det utfördes på ett företag med stark agil bas. Målet var att identifiera och utreda orsakerna till att team känner motstånd mot BDD, och på så sätt bidra till forskningen och samtidigt hjälpa företaget med en ökad insikt i detta. Syftet med arbetet var att utveckla ett verktyg för att hjälpa team förstå sitt motstånd mot BDD och guida dem till hur de kan hantera det. För att nå målet användes en kvalitativ forskningsmetod med fokus på att få en bättre förståelse för åsikter och beteenden som finns angående BDD. Olika rundor av intervjuer utgjorde den huvudsakliga datainsamlingen. Intervjuer användes också kontinuerligt för att validera att arbetet höll rätt kurs.Det motstånd mot BDD som påträffades på företaget grupperades i olika dimensioner. Dessa användes för att utveckla slutprodukten av kandidatexamensarbetet, ett självskattningsverktyg. För att underlätta utvecklingen valdes ett spreadsheet-format på verktyget, detta även för att enkelt kunna dela det mellan flertalet intressenter.Det är viktigt att understryka att verktyget fokuserar på autonoma team. Det har inte som mål att tvinga någon att använda BDD, utan att agera som hjälp för att visa hur arbetssättet skulle kunna fungera för ett specifikt projekt och team. Slutligen, för att kunna verifiera kvaliteten på verktyget, utvärderades det i samarbete med team som tidigare på ett framgångsrikt sätt utvecklat ett projekt med BDD. Detta för att se om självskattningsverktygets utsägelse motsvarade teamets helhetsupplevelse. Verktyget testades också av andra team för att se om det var till hjälp för dem eller inte.

Body Dysmorphic Disorder, BDD, is a psychiatric diagnosis that is characterized by self- perceived ugliness. The knowledge about BDD is low and people experience that they have the diagnosis, but haven’t been diagnosed with BDD due to the lack of knowledge among professionals. Previous research has mostly consisted of quantitative studies regarding the prevalence of BDD. The purpose of this study is to describe and analyze how people, who feel that they have BDD, describe living with it in their everyday life. The study is based on four narrative interviews, and the analysis of the results is based on a narrative approach. The results show that many areas in life are negatively affected by BDD, such as, school or work, relationship with others and quality of life. There is also a lack of knowledge regarding BDD among professionals which affects the treatment of people with BDD. In conclusion, BDD is a complex diagnosis to live with and many aspects in life are limited because of the diagnosis. Therefor the knowledge of BDD must increase in order for people to be able to get the right treatment.

Programų sistemų šeima, tai grupė programų sistemų turinčių tarpusavyje daug bendrybių, tačiau besiskiriančių viena nuo kitos tam tikrais iš anksto žinomais skirtumais, kurie yra modeliuojami kintamybėmis. Toks skirstymas į šeimas yra svarbus kalbant apie pakartotinį programų sistemų dalių panaudojimą išnaudojant programų sistemų panašumus. Tačiau kuo didesnė programų sistemų šeima, tuo daugiau joje skirtumų tarp šeimos narių, t.y. labai svarbiu tampa kintamybių suvaldymo klausimas. Konfigūravimas šiuo atveju yra procesas skirtas programų sistemų konstravimui iš turimų ypatybių (bendrybių ir kintamybių). Šiame darbe yra aprašytas konfigūravimo metodas paremtas binarinėmis sprendimų diagramomis (BDD). Pirmiausiai programų sistemų šeima sumodeliuojama pagal Czarnecki-Eisenecker ypatybių modelį su kardinalumais, tada darbe aprašytu būdu verčiama į sumažintą surikiuotą binarinę sprendimų diagramą (ROBDD). Šiame darbe parodyta, kad turint ROBDD galime efektyviai konfigūruoti sumodeliuotą programų sistemų šeimą. Taip pat pateiktas konfigūravimo įrankio prototipas. / Software Systems family is a group of software systems that have great commonality among the systems, but differ from each other in some pre-known differences, which are modeled by variabilities. This distinction is important to families in terms of re-use of software systems by exploiting the similarities between software systems. However, the larger family of software systems, the more there are differences between family members, this means, managing variabilities becomes very important issue. In this case, configuration is a process of constructing new software systems from available features (commonalities and variabilities). This paper describes the configuration method based on binary decision diagrams (BDD). First, the software is modeled according to the Czarnecki- Eisenecker feature model with cardinalities, subsequently in the described way it is transformed into reduced ordered binary decision diagram (ROBDD). This paper demonstrates effective configuration of modeled software with the use of ROBDD. In addition, the prototype of the configuration tool is presented.

Lustre est un langage de programmation spécialement conçu pour la réalisation des systèmes réactifs. Le besoin de garantir que ces systèmes ont un comportement conforme a celui attendu nécessite de définir et de mettre en œuvre des méthodes de vérification formelle des programmes lustre, qui sont relatées dans cette thèse. La vérification d'un système consiste a contrôler que tous ses comportements sont corrects vis-a-vis de ses spécifications. Les comportements d'un programme lustre peuvent classiquement être représentés par une machine d'états finis, dont la génération permet de vérifier ses spécifications. La methode standard mettant en œuvre ce principe est limitée par le probleme d'explosion de la machine générée, qui n'est pas minimale. Un nouvel algorithme évitant ce probleme est présenté. Son implémentation nécessite l'emploi d'une technique de représentation et de manipulation symbolique de la machine (bdds), dont le cout d'utilisation est largement abaisse grâce a de nombreuses optimisations. Basées sur cette technique, deux autres implémentations originales de la methode standard et de la nouvelle methode proposée ci-dessus sont décrites. Les aspects de diagnostic correspondant au cas ou les programmes sont incorrects vis-a-vis de leurs spécifications sont aussi abordes