1,309 research outputs found
About twin primes and distribution of primes
Get PDFThis paper give us a demonstration of twin primes conjecture using approximation of function �(iupsilon) that we introduce in section 6. Section 1-5 give us introduction to terminology and a clarification on (iupsilon) terms. In particular section
5 is really important because of its Lemma. Section 7 reassume foregoing explanations and it give us two theorems and one corollary;the theorem 7.2 give us exact approximation of twin primes counting function
Structure and functioning of the Northern Adriatic coastal ecosystem, within the context of the Marine Strategy Framework implementation
No full textThe Northern Adriatic Sea summarizes all different critical elements of a ‘typical’ coastal area, such: important trawling activity in the inshore area, presence of aquaculture activities (mussels farms), widely distributed along the coast, presence of small scale fisheries activities, seaside touristic pressures, extended seaport activities. Among these pressures the project aims to investigate acquaculture and small scale fisheries activities within three miles from the coast. This would provide a better understanding of major impact sources and an identification of the processes that need to be preserved/enhanced to maintain or also increase the resilience of the system. Within this context, the main objectives of the project are: (1) to assess the role played by mussel culture farms, both in terms of negative impacts and positive feedbacks; (2) to focalize the attention on one of the main key factors presently affecting, but also structuring, the ecosystem in the NAS coastal area, in order to better understand the majors drivers also in terms of opportunities to be managed; (3) to define long term management objectives, indentifying the self-sustaining processes to be maintained or restored, in order to increase the system resilience and stimulate an adaptive management. To achieve these objectives, five issues were considered: benthic fauna; biogeochemical cycles; potential role as fish aggregating area; emergy analysis; artisanal fishery. The results of the present study show how a mussel farm located in a transitional environment near coast is a man made structure characterised by a sustainable use, with no direct impacts on bottom, acting as a fishing aggregating area also for some commercial species. Assimilating to an “extensive” acquaculture system, mussel farm is a structure characterised by the predominance of renewable inputs that, probably due to environmental factors such as currents and winds, doesn’t interfere both with benthic community and biogeochemical cycles of the area. Moreover the normal aggregating effects due to the confluence of great quantities of available food is increased by the presence, at the bottom, of some hard substrates, able to attract fishes species beyond for feeding, also for reproductive purpose. Nowadays, in a spatial planning management contest, the creation of further mussel farms even if may be encouraged by these results, at regional scale, it is not a firm economical sustainable, due to the low mussel selling price. Moving from this, modernize the production system by coupling mussel cultivations also with other incoming sources, may represent the right choice to maintain this type of sustainable acquacolture. Manage recreational fishing inside mussel farm may be among the feasible solutions.
In the end, as underlined by the investigation on potential role as fish aggregating area, the farm, being off-limits to commercial fishing, may act one-sidedly also as a fish maker, for the nearby areas, where artisanal fishery is allowed. By the present, this activity is a sustainable practice, but, due to the species dependence and to the catch composition in terms of thermal affinity groups show a high potential vulnerability. Small modifications both in fleet structures and in environmental conditions could drive the situation towards unsustainability. An increase in available fishes biomass may act as buffer effect towards vulnerability causes, by supporting possible new fishermen, fronting the problem of small modification in fleet structures. Moreover some of the fish species enhanced by mussel farm are temperate or warm species. Given the dependence of local artisanal fishery from cold or temperate species, a shift of catches toward temperate and warm ones’, without affecting incomings, might, at least partially, release this type of activity from the variations of the thermal regime as forecast by IPCC
Potent and Selective Activity of Daphnane Diterpens against HIV-1, HIV-2 and Coxsackievirus
No full textSalt Effects in Plastered and Unplastered Outdoors Brick Masonry: Quantitative Laser Monitoring of Surface Decay Evolution
No full textIn masonry materials, the superficial decay is a widespread problem. Aggressive environmental agents such as moisture and salts trigger the damage by propagating through the material capillary pores. Although several studies have been carried out on salt crystallization and their damaging effects, additional research effort is required to better investigate this phenomenon on real cases and real weathering conditions. To this purpose, testing and monitoring tools capable of following degradation process since the early beginning are necessary. Repeated visual inspections are commonly used to monitor the superficial decay, but this is a subjective technique not capable of providing any quantitative information. In this work, an experimental campaign, carried out in Bologna, Italy, is presented. A 2-header brick wall, one main face unplastered and one plastered, was stored outdoors and exposed to weathering over two summers. Before the start of the second ageing season, moisture and salt capillary rise was simulated by low-concentrated sodium chloride solution (0.1% -wt). The aim was to favour solution evaporation and salt crystallization and to provoke material damage. The degradation process was monitored based on a contactless, rapid and accurate image diagnostic technique. In particular, high-resolution laser scanning by triangulation technique was adopted. 3D data acquisition was repeated at the end of both seasons. The proposed procedure successfully extracted quantitative information about areas of material spalling and detachment even in the initial phases of decay
Established and Outsiders at the Same Time - Self-Images and We-Images of Palestinians in the West Bank and in Israel
Get PDFPalestinians frequently present a harmonizing and homogenizing we-image of their own national we-group, as a way of counteracting Israeli attempts to sow divisions among them, whether through Israeli politics or through the dominant public discourse in Israel. However, a closer look reveals the fragility of this homogenizing we-image which masks a variety of internal tensions and conflicts. By applying methods and concepts from biographical research and figurational sociology, the articles in this volume offer an analysis of the Middle East conflict that goes beyond the polar opposition between “Israelis” and “Palestinians”. On the basis of case studies from five urban regions in Palestine and Israel (Bethlehem, Ramallah, East Jerusalem, Haifa and Jaffa), the authors explore the importance of belonging, collective self-images and different forms of social differentiation within Palestinian communities. For each region this is bound up with an analysis of the relevant social and socio-political contexts, and family and life histories. The analysis of (locally) different figurations means focusing on the perspective of Palestinians as members of different religious, socio-economic, political or generational groupings and local group constellations – for instance between Christians and Muslims or between long-time residents and refugees. The following scholars have contributed to this volume: Ahmed Albaba, Johannes Becker, Hendrik Hinrichsen, Gabriele Rosenthal, Nicole Witte, Arne Worm and Rixta Wundrak. Gabriele Rosenthal is a sociologist and professor of Qualitative Methodology at the Center of Methods in Social Sciences, University of Göttingen. Her major research focus is the intergenerational impact of collective and familial history on biographical structures and actional patterns of individuals and family systems. Her current research deals with ethnicity, ethno-political conflicts and the social construction of borders. She is the author and editor of numerous books, including The Holocaust in Three Generations (2009), Interpretative Sozialforschung (2011) and, together with Artur Bogner, Ethnicity, Belonging and Biography (2009)
Gendered Adaptations: Canadian Rewritings of Classical Texts. Author-Translator Conference 2010, University of Swansea, Wales
No full textQuantum many-body scars : realizations and applications
No full textauthor: Gabriele Calliari, BScMasterarbeit Universität Innsbruck 202
The Last Bastion of Architecture
No full textThe essay is a critical interpretation of Rem Koolhaas' theory of Bigness. In fact, of the theories that have best marked the development of architectural culture since World War II – from those of the Smithsons to Rossi, from Eisenman to Venturi and Scott Brown – Rem Koolhaas’s theory of Bigness has probably, more than any other, investigated the intrinsic possibilities of architecture at the end of the 20th century. In light of the number of pseudotheories that have largely characterized the last decade, Bigness is the last constituent fact of recent history: an extremely lucid attempt to draw to a conclusion a history that goes back to the very invention of the modern city, comparing it with architecture’s own immutable core, its physicality, even exposing the theory of Bigness itself to the risk of total failure. The essay investigates the development of the theory of Bigness from its incubation in Koolhaas’s book Delirious New York in 1978, to the "official" presentation in S,M,L,XL in december 1995. The essay presents some parts of the PhD research "L'architettura dei libri. Progetto, scrittura, editoria nella ricerca architettonica contemporanea", developed by the author at Università degli studi G. D'Annunzio, Chieti, Facoltà di Architettura di Pescara, in 2001-2004.
Log 7 Winter/Spring 2006 includes essays of Richard Anderson, Marie J. Aquilino, Amos Gitai, Pier Vittorio Aureli, Manuel Orazi, Jean-Louis Cohen, William Drenttel, Peter Eisenman, Luis Fernandez-Galiano, John Kaliski, Sabir Khan, Reinhold Martin, Gabriele Mastrigli, Deborah Richmond, Julie Rose, Paul Virilio, Eyal Weizman, Mirko Zardini.
Log 7
Winter/Spring 2006
Co-edited by Denise Bratton
Saggi di Richard Anderson, Marie J. Aquilino, Amos Gitai,
Pier Vittorio Aureli, Manuel Orazi, Jean-Louis Cohen, William Drenttel, Peter Eisenman, Luis Fernandez-Galiano, John Kaliski, Sabir Khan, Reinhold Martin, Gabriele Mastrigli, Deborah Richmond, Julie Rose, Paul Virilio, Eyal Weizman, Mirko Zardini
Quantum many-body scars : realizations and applications
No full textauthor: Gabriele Calliari, BScMasterarbeit Universität Innsbruck 202
Quantum many-body scars : realizations and applications
No full textauthor: Gabriele Calliari, BScMasterarbeit Universität Innsbruck 202
- …
