Development of a geological model useful for the study of the natural hazards in urban environments. An example from the eastern sector of Rome (Italy)

Detailed knowledge of the subsoil setting is an extremely important issue for a correct risk reduction policy, especially when dealing with urban areas hosting cultural heritage, which enhance risk conditions even at low geo-hazard levels, as in the case of Rome. In general, the reliability of risk assessments related to geo-hazards is strictly dependent on the resolution of the reference geological model. The study presented here exemplifies an integrated methodology aimed at refining the knowledge of the geological setting in unique urban environments, such as the city of Rome, where canonical approaches are limited by the scarcity of outcrops and ad-hoc geognostic surveys may be expensive and time-consuming. The methodology used in the study is based on a critical review of available geological, stratigraphic, archeological and historical-archival data. The integration of such data, properly stored, managed and analysed in a GIS environment, made it possible to: i) better frame the geological setting of a wide sector of the eastern part of Rome; and, in particular, ii) focus on buried natural morphologies (i.e. valleys) strongly modified by progressive urbanisation that determined their filling with huge thickness of backfills, which often represent a critical geotechnical issue. A detailed geological model was thus developed. The model shows slight but significant differences with respect to already available official maps, emphasising the need for carrying out in-depth analyses of already existing data from different sources, in order to collect thematic data to be used for effective land management policies

Contribution for an urban geomorphoheritage assessment method. Proposal from three geomorphosites in Rome (Italy)

Urban geomorphology has important implications in spatial planning of human activities, and it also has a geotouristic potential due to the relationship between cultural and geomorphological heritage. Despite the introduction of the term Anthropocene to describe the deep influence that human activities have had in recent times on Earth evolution, urban geomorphological heritage studies are relatively rare and limited and urban geotourism development is recent. The analysis of the complex urban landscape often need the integration of multidisciplinary data. This study aims to propose the first urban geomorphoheritage assessment method, which originates after long-lasting previous geomorphological and geotouristic studies on Rome city centre, it depict rare examples of the geomorphological mapping of a metropolis and, at the same time, of an inventory of urban geomorphosites. The proposal is applied to geomorphosites in the Esquilino neighbourhood of Rome, whose analysis confirm the need for an ad hoc method for assessing urban geomorphosites, as already highlighted in the most recent literature on the topic. The urban geomorphoheritage assessment method is based on: (i) the urban geomorphological analysis by means of multitemporal and multidisciplinary data; (ii) the geomorphosite inventory; and (iii) the geomorphoheritage assessment and enhancement. One challenge is to assess invisible geomorphosites that are widespread in urban context. To this aim, we reworked the attributes describing the Value of a site for Geotourism in order to build up a specific methodology for the analysis of the urban geomorphological heritage

Geomorphological classification of urban landscapes. The case study of Rome (Italy)

The results of a long-lasting geomorphological survey carried out in Rome are summarized. A method aimed at integrating survey data, historical maps, aerial photographs and archaeological and geomorphological literature produced a geomorphological map of the present-day historical centre. The geomorphology of Rome is related to the paleogeographical conditions prior to the founding of the City; they allow us to recognize the stages of landscape evolution of the ancient Caput Mundi (Capital of the World). The study area has been affected by continuous man-made changes to the drainage network and to the topographic surface over the last 3000 years. It has forced the authors to develop innovative solutions to undertake effective analysis of the urban environment and the legend of the geomorphological map in this peculiar context. The resulting map is useful for urban planning and archaeological research

Strategi Penyelesaian Kredit Macet Dan Dampak Terhadap Kinerja Keuangan Pada BMT Tumang Di Kartasura

Penelitian ini bertujuan untuk mengetahui penyebab kredit macet dan strategi penyelesaiannya.Penelitian ini menggunakan data primer dan data sekunder. Data primer diperoleh melalui wawancara kepada manajer BMT Tumang Kartasura dan Nasabah yang pernah mengalami Kredit macet. Populasi yang diambil yaitu Kesuluruhan Nasabah yang mengalami kredit macet tahun 2012 dan sampel 5 nasabah yang mengalami kredit macet,dengan teknik pengambilan sampel menggunakan metode purposive sampling. Hasil penelitian ini menjelaskan bahwa sudah berbagai antisipasi dilakukan oleh pihak BMT Tumang kredit macet selalu ada setiap tahun. Faktor penyebab terjadinya macet meliputi karakter nasabah, masalah ekonomi nasabah. Oleh sebab itu, kredit macet harus dicegah sejak dini agar tidak menimbulkan kerugian. Salah satu bentuk strategi yang dilakukan oleh pihak BMT Tumang adalah 1) jika penyebabnya karena karakter debitur hal yang dilakukan adalah Pengintensifan kunjungan ketempat tinggal dan usaha debitur, melakukan pendekatan persuasif, memberikan tenggang waktu kepada nasabah. 2) jika penyebabnya karena masalah ekonomi pihak BMT akan melakukan rescheduling (penjadwalan kembali) dengan dasar kesepakatan bersama, dan yang terakhir melakukan eksekusi jaminan

Lent/Passion Week Personal Lectionary Cycle A

This text has been digitized, but is not available for download. A physical copy is available at the College of the Holy Cross, in Archives and Distinctive Collections. Please contact Deaf Catholic Archives for more information.https://crossworks.holycross.edu/dca_books/1044/thumbnail.jp

Review of Polybed pressure swing adsorption for hydrogen purification

Hydrogen (H2) will play a key role in the future low-carbon energy society. The industrial production of hydrogen involves chemical reactions and purification steps. Pressure Swing Adsorption (PSA) is a versatile process able to produce ultrapure hydrogen (99.99+%) from various gas mixtures, resulting in the most widespread purification technology worldwide. In particular, the Polybed PSA system, having more than six beds and a complex cycle configuration, has proven to maximize H2 recovery and H2 throughput, exceeding 90% and 240 MMSCFD (265,000 Nm3 h−1) per single train, respectively. This paper systematically reviews the Polybed H2 PSA process for the first time, highlighting the latest technical advances and discussing its optimal integration in industrial clusters. A bespoke Polybed PSA process designed for simultaneous production of high-purity hydrogen and carbon dioxide (CO2) is also reviewed in light of the recent international directives aimed to reduce CO2 emissions and produce blue hydrogen.</p

Design of an industrial multi-bed (V)PSA unit for argon concentration

Pressure swing adsorption systems have been devised to concentrate argon from a binary gas mixture of oxygen and argon (O2:Ar = 95:5 mol%) that an industrial oxygen generation vacuum swing adsorption (VSA) unit produces from air. The kinetically-driven adsorption processes investigated in this study contain a self-purging step and up to two double-ended pressure equalization steps. Three adsorption cycle configurations, each of which has one, two and three beds, were simulated. The effects of pressure ranges of the adsorption cycle, either pressure swing adsorption (PSA, 1–3 bar) or vacuum swing adsorption (VSA, 0.1–1 bar), as well as adsorption step time were extensively assessed with respect to the following separation key performance indicators (KPIs): argon purity, argon recovery, bed productivity and specific energy consumption. It turned out that argon purity and recovery could be significantly improved in the VSA cycles at the expense of bed productivity and energy consumption. The single VSA unit could not concentrate argon up to a purity of 98+% which is typically required for certain applications such as steel production and inert gas welding. Thus, a second VSA unit was added to increase further the argon purity and it was found that the integrated two-stage VSA system is capable of achieving the following overall performances: argon purity of 98.1%, argon recovery of 20.3%, bed productivity of 0.011 molAr kgads−1h−1 and specific energy consumption of 53.2 MJ kgAr−1. Considering real efficiencies of turbomachinery the energy consumption of the proposed VSA unit resulted 75% higher than that of a conventional stand-alone cryogenic distillation system designed to achieve the same separation. However, the VSA technology is expected to be a more attractive option than the cryogenic process in terms of CAPEX.</p

Cooperativismo sustentable

Se considera que el objetivo de desarrollo sostenible es el mejoramiento de la calidad de vida humana, lo que implica el manejo y/o transformación de la estructura y función de los ecosistemas a fin de aprovechar los bienes y servicios provistos por ellos, minimizando los conflictos inherentes a su explotación, maximizando el apoyo mutuo entre las acciones y actividades necesarias a realizar, y distribuyendo los costos y beneficios ecológicos entre las poblaciones involucradas. Existe una fuerte controversia respecto del comportamiento de las más importantes empresas de los países industrializados para con el medio ambiente. El objetivo de toda empresa comercial es obtener el máximo de beneficio, y que todo desembolso “innecesario” no es bienvenido. Pese al enfoque socio-económico y político que se pueda tener sobre la problemática del impacto sobre el medio ambiente (casos tales como arrojar residuos tóxicos que contaminaran las napas de agua etc.). Existen en este momento varias ONG (Organizaciones No Gubernamentales) dedicas al cuidado del medio ambiente, como así también, algunas organizaciones gubernamentales, en lo que a empresas se refiere debo destacar que las Empresas Cooperativas fueron y son pioneras del valor de la responsabilidad social, y cuidado y respeto por la naturaleza, y los recursos que esta ofrece.Facultad de Ciencias Económica