6 research outputs found

    A Study of Green Infrastructure in European Cities: Opportunities and possibilities: A Systematic Review and Meta-Analysis

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    Green infrastructure (GI) is generally defined as a network of natural and semi-natural regions that has been sensitively developed and managed to provide an array of ecosystem services and improve people’s well-being. Across Europe, the notion of GI has had a robust association with the the impacts of climate change, multifunctionality, and green growth; this is especially true over the past ten years, from 2012 to 2022. This has resulted in a broad-based agenda on policy and research with vast differences, targeting a variety of themes and cultures. The systematic review and meta-analysis conducted in this paper present an up-to-date review of the main attributes of GI-related research and the implications for the member states within the European Union (EU). GI-related concepts, thematic clusters, and the main priorities within the research were considered in our review. Due to the ambiguity of the definition of GI, a broad diversity of research goals and published output are discussed. It was also seen that green spaces situated within urban areas and their related ecosystem services are the most common topics in the literature. Based on this, we recommend that an in-depth integration of the goals pertaining to nature conservation be conducted to understand how GI may pertain towards sustainable transitions in and outside the city

    Isolation of Escherichia coli

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    The isolation and characterization of Escherichia coli O157:H7 strains from 22 out of 174 fecal samples from petting zoo animals representing twenty-two different species (camel, lion, goats, zebra, bear, baboon monkey, Siberian monkey, deer, elk, llama, pony, horses, fox, kangaroo, wolf, porcupine, chickens, tiger, ostrich, hyena, dogs, and wildcats) were investigated. One petting Al-Zawraa zoological society of Baghdad was investigated for E. coli O157:H7 over a 16-month period that spanned two summer and two autumn seasons. Variation in the occurrence of E. coli O157:H7-positive petting zoo animals was observed, with animals being culture positive only in the summer months but not in the spring, autumn, or winter. E. coli O157:H7 isolates were distinguished by agglutination with E. coli O157:H7 latex reagent (Oxoid), identified among the isolates, which showed that multiple E. coli strains were isolated from one petting zoo animal, in which a single animal simultaneously shed multiple E. coli strains; E. coli O157:H7 was isolated only by selective enrichment culture of 2‚ÄČg of petting zoo animal feces. In contrast, strains other than O157:H7 were cultured from feces of petting zoo animals without enrichment

    Electron lens Optimization for Beam Physics Research using the Integrated Optics Test Accelerator

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    This study proposed control system that has been presented to control the electron lens resistance in order to obtain a stabilized electron lens power. This study will layout the fundamental challenges, hypothetical plan arrangements and development condition for the Integrable Optics Test Accelerator (IOTA) in progress at Fermilab. Thus, an effective automatic gain¬†¬†control (AGC) unit has been introduced which prevents fluctuations in the internal resistance of the electronic lens caused by environmental influences to affect the system's current and power values ‚Äč‚Äčand keep them in stable amounts. Utilizing this unit has obtained level balanced out system un impacted with electronic lens surrounding natural varieties

    The Relationship Between Green Areas and Slope: Case Study the City of Prague

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    This paper focuses on the case study of Prague, the capital the Czech Republic with the aim of identify and analyzing the urban green areas. The paper study the relationship between impervious (built areas) and pervious areas (green areas) with topographical features in the city. The methodology applied was NDVI (Normalized Difference Vegetation Index) index using the Sentinel-2 image (10 meters resolution) with free access to data. After this initial filtering, was analyze the correlation between pervious and impervious areas with slope conditions using as method the combinatorial analysis to produce the maps describing the relationship between green areas and percentage of slopes. The resulting maps indicate a correlation between land use, green areas, and topography.DOI: https://doi.org/10.20365/disegnarecon.20.2018.10</p

    Experimental Evaluation of the Thermoelectrical Performance of Photovoltaic-Thermal Systems with a Water-Cooled Heat Sink

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    A design for a photovoltaic-thermal (PVT) assembly with a water-cooled heat sink was planned, constructed, and experimentally evaluated in the climatic conditions of the southern region of Iraq during the summertime. The water-cooled heat sink was applied to thermally manage the PV cells, in order to boost the electrical output of the PVT system. A set of temperature sensors was installed to monitor the water intake, exit, and cell temperatures. The climatic parameters including the wind velocity, atmospheric pressure, and solar irradiation were also monitored on a daily basis. The effects of solar irradiation on the average PV temperature, electrical power, and overall electrical-thermal efficiency were investigated. The findings indicate that the PV temperature would increase from 65 to 73 &deg;C, when the solar irradiation increases from 500 to 960 W/m2, with and without cooling, respectively. Meanwhile, the output power increased from 35 to 55 W when the solar irradiation increased from 500 to 960 W/m2 during the daytime. The impact of varying the mass flow rate of cooling water in the range of 4 to 16 L/min was also examined, and it was found that the cell temperature declines as the water flow increases in intensity throughout the daytime. The maximum cell temperature recorded for PV modules without cooling was in the middle of the day. The lowest cell temperature was also recorded in the middle of the day for a PVT solar system with 16 L/min of cooling water