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gui_es_04_analisi_classificazione
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gui_es_04_analisi_classificazione_fabiola_bruni
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gui_es_04_analisi_classificazione
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gui_es_04_analisi_classificazione
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gui_es_03_definizione_funzionalità
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gui_es_04_analisi_classificazione_Chiara_Elzi
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gui_es_04_analisi_classificazione
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Dynamic, non-contact 3D sample orientation in microscopy
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A comparison of Extreme Programming and the Rational Unified Process from a practical perspective
In this paper, a comparison of the Rational Unified Process (RUP) and Extreme Programming (XP) is discussed from a practical perspective. The paper starts with a short introduction to both software development methodologies and is followed by a description of similar research comparing XP and RUP. The aforementioned comparisons are from a more theoretical perspective. Therefore, this paper continues with a contribution comparing both methodologies from a practical perspective by combining multiple research sources. The conclusion of the similar comparison research is that XP and RUP are very different. After adding comparisons from a practical perspective however, the conclusion is that XP and RUP are in fact very similar when it comes to end result and usage.
How to Train Your AI PA: A Novel Approach to Timeline Evaluation and Inference
Analytica Chimica Acta Template
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Role of mycorrhizal symbiosis in mineral weathering and nutrient mining from soil parent material.
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#Introduction
Rocks are the primary source of all plant nutrients, except nitrogen. These nutrients are bound into a variety of crystalline structures (minerals).
Minerals are either formed during rock formation from magma (primary minerals) or formed during soil formation (secondary minerals).
Secondary minerals are formed when the local soil solution is saturated in respect to that mineral. In contrast to secondary minerals, primary minerals are formed in the earth mantle at high temperature and pressure.
At the earth surface these minerals may be thermodynamically unstable, and will eventually dissolve completely.
This dissolution process is extremely slow for most minerals. It has been estimated that it takes more than 30 million years to dissolve a 1 mm diameter quartz grain under natural soil conditions \citep{Lasaga_1984}.
Nonetheless, soil mineral weathering provides an essential input of plant nutrients into ecosystems, avoiding or delaying nutrient limitations \citep{chadwick_changing_1999}.
In addition, mineral weathering produces cations that counteract soil acidification, thereby improving the availability of most plant nutrients \citep{van_Breemen_1983}.
Also clays are formed as a weathering product of feldspars and micas \citep{Oades_1988}.
Clay particles contribute, with their negative charged surfaces, to the cation exchange capacity (CEC) of the soil, reducing the leaching of positively charged nutrients like K+ and NH4+.
Clay content correlates positively with water holding capacity and soil organic matter (SOM) content \citep{Sollins_1996}.
Moreover, weathering of Ca- and Mg-silicate minerals play a central role in the global carbon cycle, because large amounts of Ca and Mg, released by the weathering process, will be locked up as carbonates in marine sediments \citep{Sundquist_1985}.
In the long-term, atmospheric CO2 is regulated by the weathering rates of these minerals, which is influenced by climate and mountain uplift \citep{Berner_2003, Raymo_1992}.
The vast amounts of nutrients locked in soil minerals triggered, nearly 100 years ago, the question of wether or not plants can actively tap into this potential nutrient source \citep{HALEY_1923,TURK_1919}.
Five decades later, studies appear on the role of microorganisms, including mycorrhizal fungi, in mineral weathering \citep{WEBLEY_1963,DUFF_1963,Sperber_1958,Boyle_1967,Boyle_1973}.
More recently, a publication with the provocative title `Rock eating fungi' appeared in the journal Nature \citep{Jongmans_1997}.
This publication presented evidence of, presumably mycorrhizal, fungal hyphae drilling their way (chemically and/or physically) into feldspar grains.
This paper initiated renewed interest into the topic.
A series of reviews has been published since then, covering the research up to 2009 \citep{Finlay_2009,Hoffland_2004,Landeweert_2001}.
Since 2009, more evidence of mycorrhizal weathering has been published, based on in vitro and microcosm research.
A new perspective is the influence of the emergence of different types of mycorrhizal fungi during the evolution of land plants on mineral weathering rates, and thus the global carbon cycle.
The gap between laboratory based studies and the real world has been bridged by a number of field based studies and mathematical modeling.
So far, evidence of a substantial role of mycorrhizal fungi on soil mineral weathering has been missing, while modeling studies show contrasting results.
In this chapter we briefly introduce the basics of physical and chemical weathering mechanisms, as insight in these mechanisms is of vital importance in the interpretation of results from laboratory based experiments and modeling studies.
Next, we give an overview of the recent literature on this topic, and set their results in perspective with the current knowledge on mineral dissolution kinetics.
gui_es_03_definizione_funzionalità_fabiola_bruni
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gui_es_03_definizione_funzionalità
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gui_es_03_definizione_funzionalità_serena_berti
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Composite Higgs Model parameter determination at the FCC-ee
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A future e+e− collider will be capable to show the imprint of composite Higgs scenarios encompassing partial compositeness. Amongst the possible designs of such a machine, a Future Circular Collider of e+e− beams (FCC-ee) has become a frontrunner project in terms of cost effectiveness, precision and search reach \cite{Bicer_2014}. Besides the detailed study of the Higgs boson properties, based upon the analysis of the Bjorken production channel e+e− → ZH at an energy of about 240 GeV, such a machine will have a rich programme also covering top-quark physics (at the energies of 350 to 370 GeV) and revisiting the typical LEP1/SLC and LEP2 energy ranges (from MZ to 2MW) with significantly increased luminosity. Of particular relevance for our purposes is the FCC-ee ability to afford one with a very accurate determination of the top-quark properties, chiefly, its mass, width and couplings to SM objects. This is because the top quark is the natural carrier of New Physics (NP) phenomena associated to the partial compositeness mechanism.
Wordpress_basic_es_02_mappatura&menu Enrico Peruselli
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gui_es_02_analisi_coerenza_Eva_Vezzani
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gui_es_03_definizione_funzionalità_Eva_Vezzani
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wordpress_basic_es_02_mappatura&menu
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wordpress_basic_es_02_mappatura&menu Aurora_Cappello
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Wordpress_basic_es_02_mappatura&menu Giulio Bergamo
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Navigation & Footer Menu . SiteMap Creation
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