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University of Thessaly
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Basic Info

Latest Publications
Journal Article
Applied Catalysis B: Environment and Energy
Published: 01 September 2024 in Applied Catalysis B: Environment and Energy
ACS Style

Ruolin Cheng; Jing Ren; Haoran Wang; Huagen Liang; Panagiotis Tsiakaras. Photo-induced CO2 cycloaddition and tetracycline degradation over novel FeOx modified defective graphitic carbon nitride composite. Applied Catalysis B: Environment and Energy 2024, 352 .

AMA Style

Ruolin Cheng, Jing Ren, Haoran Wang, Huagen Liang, Panagiotis Tsiakaras. Photo-induced CO2 cycloaddition and tetracycline degradation over novel FeOx modified defective graphitic carbon nitride composite. Applied Catalysis B: Environment and Energy. 2024; 352 ():.

Chicago/Turabian Style

Ruolin Cheng; Jing Ren; Haoran Wang; Huagen Liang; Panagiotis Tsiakaras. 2024. "Photo-induced CO2 cycloaddition and tetracycline degradation over novel FeOx modified defective graphitic carbon nitride composite." Applied Catalysis B: Environment and Energy 352, no. : .

Journal Article
Future Generation Computer Systems
Published: 01 August 2024 in Future Generation Computer Systems

We introduce Fluidity, a framework enabling the flexible and adaptive deployment of serverless and modular applications in systems comprising cloud, edge, and mobile nodes. Based on a declarative description of application requirements, a custom placement policy, and a formal system infrastructure description, Fluidity plans and executes an initial deployment of application components in the cloud–edge–mobile continuum. Furthermore, at runtime, Fluidity monitors resource availability and the position of mobile nodes, and adapts the deployment of the application accordingly, without any manual intervention from the application owner or system administrator. These characteristics render Fluidity an enabler for serverless applications, allowing the application developers to focus on the application code itself while abstracting out the infrastructure management. Notably, Fluidity permits developers to provide their own deployment and adaptation policies as well as to switch between different policies while the application is running. We discuss the design and implementation of Fluidity in detail and provide a realistic evaluation using a lab testbed in which the mobile node is represented as a simulated drone. In addition, we evaluate the scalability of the proposed mechanisms. Our results show that the core mechanisms of Fluidity can support flexible application execution at a reasonable overhead and experimentation with different deployment policies with minimal effort.

ACS Style

Foivos Pournaropoulos; Alexandros Patras; Christos D. Antonopoulos; Nikos Bellas; Spyros Lalis. Fluidity: Providing flexible deployment and adaptation policy experimentation for serverless and distributed applications spanning cloud–edge–mobile environments. Future Generation Computer Systems 2024, 157, 210 -225.

AMA Style

Foivos Pournaropoulos, Alexandros Patras, Christos D. Antonopoulos, Nikos Bellas, Spyros Lalis. Fluidity: Providing flexible deployment and adaptation policy experimentation for serverless and distributed applications spanning cloud–edge–mobile environments. Future Generation Computer Systems. 2024; 157 ():210-225.

Chicago/Turabian Style

Foivos Pournaropoulos; Alexandros Patras; Christos D. Antonopoulos; Nikos Bellas; Spyros Lalis. 2024. "Fluidity: Providing flexible deployment and adaptation policy experimentation for serverless and distributed applications spanning cloud–edge–mobile environments." Future Generation Computer Systems 157, no. : 210-225.

Journal Article
Applied Soil Ecology
Published: 01 July 2024 in Applied Soil Ecology

The response of complete ammonia-oxidizing (comammox) bacteria to variable nitrogen (N) inputs and nitrification inhibitors (NIs) remains poorly understood. We conducted two experiments, in a soil where both clade A and B comammox Nitrospira were present, to identify the type (ammonium sulphate vs. urea) and the level of N-fertilization (0–500 mg-N-kg‐1d.w. soil) that are conducive to the growth of comammox, compared to canonical ammonia-oxidizing microorganisms (AOM), and subsequently to assess their response to three commercial (DCD, nitrapyrin, DMPP) and a new potent (ethoxyquin) NI under these favourable N fertilization regimes. The highest concentration of ammonium sulphate stimulated comammox compared to canonical AOM which showed a dose-dependent increase by both N sources. DMPP primarily, and DCD, imposed a more persistent inhibition on nitrification than nitrapyrin and ethoxyquin, a result which did not concur with the soil persistence of NIs (DMPP was the least persistent among the commercial NIs) but was mostly driven by their selective inhibitory activity on ammonia-oxidizing bacteria (AOB) that prevailed in the studied soil. The inhibition of AOB by DMPP and DCD was complemented by the proliferation of comammox and ammonia-oxidizing archaea (AOA). NIs induced significant changes on AOB and comammox communities. Comammox Nitrospira clade B were enriched by DCD and DMPP but depleted by nitrapyrin and ethoxyquin. We showed that (i) releasing comammox Nitrospira and AOA from AOB competition allows them to proliferate efficiently, even under high inorganic ammonium conditions; (ii) comammox clade B are more responsive than clade A to high inorganic N input and NIs.

ACS Style

Evangelia S. Papadopoulou; Eleftheria Bachtsevani; Athanasia Katsoula; Chrysoula Charami; Eleni Lampronikou; Sotirios Vasileiadis; Dimitrios G. Karpouzas. Nitrification inhibitors impose distinct effects on comammox bacteria and canonical ammonia oxidizers under high N fertilization regimes. Applied Soil Ecology 2024, 199 .

AMA Style

Evangelia S. Papadopoulou, Eleftheria Bachtsevani, Athanasia Katsoula, Chrysoula Charami, Eleni Lampronikou, Sotirios Vasileiadis, Dimitrios G. Karpouzas. Nitrification inhibitors impose distinct effects on comammox bacteria and canonical ammonia oxidizers under high N fertilization regimes. Applied Soil Ecology. 2024; 199 ():.

Chicago/Turabian Style

Evangelia S. Papadopoulou; Eleftheria Bachtsevani; Athanasia Katsoula; Chrysoula Charami; Eleni Lampronikou; Sotirios Vasileiadis; Dimitrios G. Karpouzas. 2024. "Nitrification inhibitors impose distinct effects on comammox bacteria and canonical ammonia oxidizers under high N fertilization regimes." Applied Soil Ecology 199, no. : .

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