6,557 research outputs found
Confronto della capacità di rimozione del cromo tra quattro specie di salice
No full textA causa dell’ampio uso industriale del cromo e dello smaltimento dei residui di lavorazione, si è incominciato a considerare questo metallo come un serio inquinante ambientale.
Il cromo si trova in natura con differenti stati di ossidazione da Cr2- a Cr6+, dei quali le forme trivalente (Cr3+) ed esavalente (CrO42-) sono le più stabili e comuni.
Il cromo trivalente a piccole concentrazioni è essenziale per la vita degli animali e degli esseri umani; è coinvolto, infatti, sia nel metabolismo glucidico sia in quello lipidico, e risulta 10÷100 volte meno tossico del Cr esavalente. Tuttavia esso può risultare tossico a concentrazioni elevate.
Lo studio ha lo scopo di indagare l’effetto di due differenti trattamenti con cromo trivalente alle concentrazioni di 100 μM e 300 μM su accrescimento, contenuto in pigmenti fotosintetici, attività fotosintetica, conduttanza stomatica, traspirazione e contenuto di cromo in radici e foglie di quattro specie di salice: S. alba sub. typica (L.), S. elaeagnos (Scop.), S. fragilis (L.) e S. matsudana var. tortuosa (Koidzumi).
Le piante ottenute da talee sono state fatte crescere su un substrato di sabbia di quarzo e agriperlite e irrigate con una soluzione nutritiva completa.
A 30 giorni dal trapianto sono iniziati i trattamenti con CrCl3 che si sono protratti per 26 giorni.
I risultati hanno evidenziato una diminuzione significativa dell’accrescimento solo in S. alba nel trattamento a 300 μM rispetto al controllo. Per quanto riguarda il contenuto in pigmenti fotosintetici non si sono riscontrate differenze significative tra i trattamenti ed il controllo per nessuna delle quattro specie analizzate, mentre alcune differenze sono state osservate nell’andamento della traspirazione, della conduttanza stomatica e nell’attività fotositetica. Inoltre, sono state evidenziate importanti differenze nella capacità di accumulo del Cr tra le quattro specie di salice considerate
Význam výtvarného slohu Antoni Gaudího pro cestovní ruch Barcelony
No full textTato bakalářská práce se zaměřuje na umělecká díla slavného katalánského architekta Antoni Gaudího, která během svého života vytvořil v Barceloně. Především se zkoumá, jak moc jeho atypické stavby ovlivňují cestovní ruch Barcelony, zda-li přispívají k neustále rostoucímu počtu turistů a zároveň také, jestli samotná katalánská metropole dokáže efektivně využít Gaudího odkaz ve svůj prospěch
Antoni Despuig i Dameto, el mapa de Mallorca (1784-1785) i la Societat d'Amics del País
No full textEl clérigo Antoni Despuig i Dameto (1745-1813), si no fue el autor, fue el responsable de uno de
los mapas de Mallorca más celebrados, grabado por Josep Muntaner en 1785. La iniciativa surgió
probablemente en el seno de la Sociedad Económica Mallorquina de Amigos del País. El artículo
hace una revisión de los posibles intervinientes y de algunas características del documento como las
coordenadas, la escala (1:72.000 ca) y los datos referidos a caminos y poblaciones.The clergyman Antoni Despuig i Dameto (1745-1813), if he was not the author he was the person
in charge of one of the more celebrated maps of Majorca, burdened by Josep Muntaner in 1785. The
initiative arose probably in the bosom of the Sociedad Económica Mallorquina de Amigos del País. This
paper does a review of the possible interveners and of some characteristics of the document as the
coordinates, the scale (1:72.000 ca) and the information referred to ways and populations
Black Antoni and Alison V-Neck T-Shirt
No full textBlack V-neck t-shirt with Pussycat and Canary Logo. Maker: Antoni and Alison. Date: 2006 - from the The Betty Smithers Design Collection at Staffordshire University.
Ancistrocerus antoni
No full text46) Ancistrocerus antoni (Cameron, 1900) Odynerus antoni Cameron 1900: 505. Type data: male, (OUM). Type locality: “Barrackpore”. Ancistrocerus antoni; Giordani Soika, 1973b: 125. Material examined. INDIA: Himachal Pradesh: IARI farm Kullu, 26.v.2016, 1 ♀, Coll. Sandesh & Umeshkumar. Distribution. India: Himachal Pradesh (new record), West Bengal. Elsewhere: Malaysia; Nepal. (Giordani Soika 1973, Gusenleitner 1996).Published as part of Gawas, Sandesh M., Kumar, Girish, Pannure, Arati, Gupta, Ankita & Carpenter, James M., 2020, An annotated distributional checklist of Vespidae (Hymenoptera: Vespoidea) of India, pp. 1-87 in Zootaxa 4784 (1) on page 17, DOI: 10.11646/zootaxa.4784.1.1, http://zenodo.org/record/386231
Antoni Gaudí, a lone wolf in European architecture
No full textThe works of Antoni Gaudí have often been viewed as revolutionary. In the author’s opinion, some of Gaudí’s works from the 19th century can indeed be considered not only revolutionary but also the harbingers of the rupture that took place in European architecture at the turn of the century. However, while his later output enshrined him as a brilliant creator with well-deserved worldwide fame, these works were far from architecture’s evolution towards a new modernity, and Gaudí finally lost any ties he might have once had with this modernity when he enclosed himself in the Sagrada Família towards the end of his life
Almanach de La Esquella de la Torratxa: Any V - 1893
No full textCopia digital. España : Ministerio de Cultura y Deporte. Subdirección General de Cooperación Bibliotecari
Antoni Gaudí-clothing collection
No full textkatedra: KDE; přílohy: 1 CD; rozsah: 74, 9s (67 765 znaků)In theoretical part of this bachelor thesis I present architecture of Antoni Gaudí. I also mentioned parallel practices in fashion and architecture. I focused on pure lines and rounded forms which appear at attic of Casa Batlló and teracce of casa Milá. Those shapes are base for the clothing collection. My intention was to create a wereable collection with features of extravagance. Important part of this collection are coloured elements from Plexiglass.V teoretické části této bakalářské práce představuji architekturu Antonia Gaudího. Zmiňuji také některé společné principy v architektuře a oděvu. Zaměřila jsem se na čisté linie a zaoblené tvary objevující se především v půdních a střešních prostorách domů Casa Batlló a Casa Milá. Tyto tvary mi byly podkladem pro tvorbu oděvní kolekce. Mým záměrem bylo vytvořit nositelnou kolekci s lehkým nádechem extravagance. Nedílnou součástí této kolekce jsou barevné doplňky z Plexiskla
Modeling Cognitive Social Capital and Corporate Social Responsibility (CSR) as Preconditions for Sustainable Networks of Relations
No full textThe paper studies the relationship between social capital (SC) and Corporate Social Responsibility (CSR) by investigating the idea of a virtuous circle between the level of SC and the implementation of CSR practices that favours the creation of cooperative networks between the firm and all its stakeholders by promoting the spread of social norms of trust, trustworthiness and cooperation.
Following the literature on SC that stresses its multidimensional character (e.g. Paldam 2000), we consider two dimensions of this notion. Starting from the distinction introduced by Uphoff (1999), we take into account a cognitive and a structural idea of SC. The first one essentially refers to the dispositional characters of agents that affect their propensity to behave in different ways. The latter refers to social networks connecting agents.With regard to the concept of CSR, we adopt a contractarian approach and consider CSR as an extended model of corporate governance, based on the fiduciary duties owed to all the firm's stakeholders. Among stakeholders, we distinguish between strong and weak stakeholders. Both these two categories have made specific investments in the firm. However, strong stakeholders are precious for the firm because they bring in strategic assets. They are, for example, skilled workers or institutional investors. On the contrary, weak stakeholders do not bring strategic assets into the firm and firms have material incentives at defecting in the relationship with them. They are, for example, unskilled workers.
By using the tools of psychological game theory, the paper shows the role of cognitive social capital and the adoption of CSR practices in promoting the emergence of social norms of trust, trustworthiness and cooperation which favour the creation of cooperative networks between the firm and all its stakeholders (structural social capital).
In particular, we show that: a) the level of cognitive SC plays a key role in inducing the firm to adopt and observe CSR practices that respect all the stakeholders; b) the decision of adopting formal instruments of CSR contributes to create cognitive SC that is endogenously determined in the model; c) the level of cognitive SC and the decision of adopting CSR practices creates structural SC in terms of a long term relationship between the firm and the weak and strong stakeholders.
Antoni Viladomat
No full textTasso, TorquatIl·lustració de l'escultura de Torquat Tasso extreta de l'obra "La Hormiga de Oro" (any V, sèrie II, núm. 26). Representa al mateix temps al pintor Antoni Viladomat i a l'art de la pintura
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