Mathematical models in landscape ecology: stability analysis and numerical tests

Si presentano vari modelli matematici per la valutazione della qualita' ecologica di un sistema ambientale. Si presenta poi un nuovo modello denominato PANDORA 2.0 e si mostra un'applicazione nel territorio della provincia di Viterb

The sustainability of the urban system from a hydrological point of view: a practice planning proposal

Environmental protection issues are often considered as a toll to be paid and not as a proactive development engine in urban planning. The issue of green areas needs to be re-interpreted as a real infrastructure, which is able to provide tangible benefits to the health and safety of citizens. These aspects represent fundamental issues of the applied research, which should explore methods and techniques able to provide the ecological concerns with the ability to operate efficiently. This paper aims to provide an answer to these questions focusing the attention on the greenery in the city and on one of its most important ecosystem services, which is mitigation of flooding events. The experimentation was carried out in an urban area, verifying, in quantitative terms, the role of the green, engineered with some SUDS, to mitigate the hydrological alteration that the urban development involves. Finally, two proposals have been presented to move from traditional planning based on normative standards to a more flexible, site-specific performance-based planning

The sustainability of the urban system from a hydrological point of view: a practice planning proposal

Environmental protection issues are often considered as a toll to be paid and not as a proactive development engine in urban planning. The issue of green areas needs to be re-interpreted as a real infrastructure, which is able to provide tangible benefits to the health and safety of citizens. These aspects represent fundamental issues of the applied research, which should explore methods and techniques able to provide the ecological concerns with the ability to operate efficiently. This paper aims to provide an answer to these questions focusing the attention on the greenery in the city and on one of its most important ecosystem services, which is mitigation of flooding events. The experimentation was carried out in an urban area, verifying, in quantitative terms, the role of the green, engineered with some SUDS, to mitigate the hydrological alteration that the urban development involves. Finally, two proposals have been presented to move from traditional planning based on normative standards to a more flexible, site-specific performance-based planning

Detection of Landscape patterns in airborne LIDAR data in the Nature Reserve of Castelporziano (Rome)

During the last decades the protection of nature has become a very important aspect due to the anthropogenic interference and structural alteration of the environment, especially in the peri-urban areas. Therefore, for a sustainable forest planning it is fundamental to get information about the actual state and the variation in landscape patterns concerning the forest layers. To this aim, an airborne laser scanning (LIDAR), a type of sensor which explicitly measures canopy height, was used to detect landscape patterns of broadleaf oak forest and for detecting the monumental trees in a peri-urban Natural Reserve: the Presidential Estate of Castelporziano (Rome)

Hipk2 cooperates with p53 to suppress γ-ray radiation-induced mouse thymic lymphoma

A genome-wide screen for genetic alterations in radiation-induced thymic lymphomas generated from p53+/− and p53−/− mice showed frequent loss of heterozygosity (LOH) on chromosome 6. Fine mapping of these LOH regions revealed three non-overlapping regions, one of which was refined to a 0.2 Mb interval that contained only the gene encoding homeobox-interacting protein kinase 2 (Hipk2). More than 30% of radiation-induced tumors from both p53+/− and p53−/− mice showed heterozygous loss of one Hipk2 allele. Mice carrying a single inactive allele of Hipk2 in the germline were susceptible to induction of tumors by γ-radiation, but most tumors retained and expressed the wild-type allele, suggesting that Hipk2 is a haploinsufficient tumor suppressor gene for mouse lymphoma development. Heterozygous loss of both Hipk2 and p53 confers strong sensitization to radiation-induced lymphoma. We conclude that Hipk2 is a haploinsufficient lymphoma suppressor gene

Technical Design Report EuroGammaS proposal for the ELI-NP Gamma beam System

The machine described in this document is an advanced Source of up to 20 MeV Gamma Rays based on Compton back-scattering, i.e. collision of an intense high power laser beam and a high brightness electron beam with maximum kinetic energy of about 720 MeV. Fully equipped with collimation and characterization systems, in order to generate, form and fully measure the physical characteristics of the produced Gamma Ray beam. The quality, i.e. phase space density, of the two colliding beams will be such that the emitted Gamma ray beam is characterized by energy tunability, spectral density, bandwidth, polarization, divergence and brilliance compatible with the requested performances of the ELI-NP user facility, to be built in Romania as the Nuclear Physics oriented Pillar of the European Extreme Light Infrastructure. This document illustrates the Technical Design finally produced by the EuroGammaS Collaboration, after a thorough investigation of the machine expected performances within the constraints imposed by the ELI-NP tender for the Gamma Beam System (ELI-NP-GBS), in terms of available budget, deadlines for machine completion and performance achievement, compatibility with lay-out and characteristics of the planned civil engineering

Reducing urban entropy employing nature-based solutions: The case of urban stormwater management

Despite numerous studies on urban resilience, few practical applications of spatial explicit and quantitative resilience indicators in green infrastructure planning are present in literature. This paper presents a methodological framework to assess the hydrological resilience of an urban context employing modelling approach. The proposed resilience index is then used to support the definition of nature-based and engineered solutions aimed to increase resilience to floods as well as to enhance the green infrastructure multi-functionality in a densely populated district of Bari. The paper aims then to contribute to the introduction of resilience assessment and sustainable storm water management in practice urban planning in a context of climate adaptation plans