oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 17 )

2018 ( 29 )

2017 ( 27 )

2016 ( 35 )

Custom range...

Search Results: 1 - 10 of 15808 matches for " Miguel Yus "
All listed articles are free for downloading (OA Articles)
Page 1 /15808
Display every page Item
Chiral β-Amino Alcohols as Ligands for the Ruthenium-Catalyzed Asymmetric Transfer Hydrogenation of N-Phosphinyl Ketimines
óscar Pablo,David Guijarro,Miguel Yus
Applied Sciences , 2012, DOI: 10.3390/app2010001
Abstract: Some chiral β-amino alcohols have been evaluated as potential ligands for the ruthenium-catalyzed asymmetric transfer hydrogenation (ATH) of N-phosphinyl ketimines in isopropyl alcohol. The ruthenium complex prepared from [RuCl 2( p-cymene)] 2 and (1 S,2 R)-1-amino-2-indanol has shown to be an efficient catalyst for the ATH of several N-(diphenylphosphinyl)imines, affording the reduction products in very good isolated yields and enantiomeric excesses up to 82%. The inherent rigidity of the indane ring system present in the ligand seems to be very important to achieve good enantioselectivities.
Masked ω-Lithio Ester Enolates: Synthetic Applications
Miguel Yus,Rosario Torregrosa,Isidro M. Pastor
Molecules , 2004, DOI: 10.3390/90500330
Abstract: The protocol of lithiation by means of lithium and a catalytic (5% molar) amount of DTBB (4,4’-di-tert-butylbiphenyl), applied to ω-chloro ortho ester 6 under Barbier-type conditions gives, after final acid-catalyzed methanolysis, the corresponding functionalized esters 8 or 9 (for chlorotrimethylsilane as electrophile) or, after ortho ester deprotection and acid catalyzed treatment, the δ-lactones 11. The procedure is also practical for bicyclic ortho esters 14: the β-chloro OBO ester derivate generates the γ- lactones 15 and the γ-chloro OBO ester gives corresponding esters 8.
Metal complexes versus organocatalysts in asymmetric 1,3-dipolar cycloadditions
Nájera, Carmen;Sansano, José M.;Yus, Miguel;
Journal of the Brazilian Chemical Society , 2010, DOI: 10.1590/S0103-50532010000300002
Abstract: in this review, a comparison between the lewis acid catalysed and organocatalysed 1,3-dipolar cycloaddition is presented with special focus on the enantioselective synthesis of five-membered hetero- or carbocyclic systems, is described. these reactions exhibit very interesting features, but the most important one is the generation of up to four stereogenic centres in only one reaction step.
Alterations of Relevance in Cyber-media
YUS,FRANCISCO;
Universitas Psychologica , 2008,
Abstract: the way people interact with other people and access information has changed drastically with the popularisation of "information and communication technologies" (ict). however, in relevance theory sperber and wilson (1986) insist that our cognitive system relies on only one criterion when interacting with the surrounding world: the need to be relevanceoriented. basically, when interpreting, when accessing information, or when learning, we all engage in a cost-benefit procedure intended to obtain interesting information (named cognitive effects) in exchange for the least mental effort. this article starts with this relevance-theoretic premise, but also shows how the qualities of (now popularized) cyber-media alter the way this cost-benefit balance is assessed and how (ir)relevant outcomes emerge from people?s cognitive interaction with these media.
A Relevance-Theoretic Classification of Jokes
Francisco Yus
Lodz Papers in Pragmatics , 2008, DOI: 10.2478/v10016-008-0004-4
Abstract: Relevance Theory pictures communication as an inferential activity that adjusts, in parallel, the explicit content of utterances, the implicated premises and conclusions that can be derived, and the right amount of contextual information needed to obtain them. When applied to jokes, a relevance-theoretic classification may be proposed depending on whether the humorist plays with the audience's inferential activity aimed at an explicit interpretation, with the audience's inference devoted to deriving implications or with their access to the right amount and quality of contextual information needed to obtain relevant interpretations. In this paper three types of jokes are proposed which focus on these aspects. A fourth type is also added, but this time referred to broad contextual assumptions on social or cultural values of society that are targeted by humorists.
The linguistic-cognitive essence of virtual community
Francisco Yus
Ibérica , 2005,
Abstract: One of the objectives of the so-called cyberpragmatics is to determine the inferential strategies of contextualisation which Internet users perform when they produce and interpret other users’ messages. Leaving aside a static view of context, according to which communicative exchanges take place in a pre-determined spatial-temporal location, today’s view of context is much more dynamic, of inferential nature, and which starts immediately after the linguistic input has been decoded. Besides, there are multiple sources from which the inferential system can gather information, whose activation is guided by the general search for relevance to which human minds are constantly geared. In previous research, this dynamic view of context has been useful in order to explain communicative strategies such as the ones taking place in chat rooms or through e-mails. In this paper, our attention will be focussed on strategies of contextualisation which are intended to form and stabilise the user’s thoughts on virtual community. Again, it will be shown that dynamic strategies of contextualisation are needed so that stable information on community can be not only stored in the user’s mind, but also shared with other users who belong to the same community. The key to this on-going and negotiated storage of information on community membership lies in sustained communicative interactions in a sufficiently lasting time span.
Alteraciones de la relevancia en los ciber-medios
FRANCISCO YUS
Universitas Psychologica , 2008,
Abstract: The way people interact with other people and access information has changed drastically with the popularisation of “information and communication technologies” (ICT). However, in relevance theory Sperber and Wilson (1986) insist that our cognitive system relies on only one criterion when interacting with the surrounding world: the need to be relevanceoriented.Basically, when interpreting, when accessing information, or when learning, we all engage in a cost-benefit procedure intended to obtain interesting information (named cognitive effects) in exchange for the least mental effort. This article starts with this relevance-theoretic premise, but also shows how the qualities of (now popularized) cyber-media alter the way this cost-benefit balance is assessed and how (ir)relevant outcomes emerge from people’s cognitive interaction with these media.
Soroll de fons per a una contrareforma educativa
Rafael Yus Ramos
Temps d'Educació , 1999,
Abstract:
THE STRUCTURE OF BEDII TEXTS IN AZARBAIJAN COMEDY AZ RBAYCAN KOMED YASINDA B D M TN N STRUKTURU
Cavan?ir YUS?FL?
Turkish Studies , 2009,
Abstract: The comedy of Azerbaijan consists, as a literary text of various signs, cultural and social layers. All life of the ethnos, its contradictions, attitude towards the reality, the events being subjected simultaneously to laughter and mourning, flow from infinity to infinity inside this text, i.e. the signs that are active in the ethnic- cultural system. The comedy of Azerbaijan is rich by its content and structure, the space inside this text is large for application of different investigation methods. The comedy of Azerbaijan is formed within a period of our history, when the vision angle of the nation through the literature is changed, the literary process is exposed to many cataclysms and the forms of the European type literature have originated lots of original tendencies. Az rbaycan komediyas , bir m tn kimi n müxt lif i ar l rd n, m d ni-sosial qatlardan t kil olunmu dur. Bu m tnin, dem li mill tin h yat nda, etnik-m d ni sistemd f al olan i ar l rin daxilind etnosun bütün h yat , onun ziddiyy tl ri, ger kliy münasib ti, güldüyü v a lad n sn l r sonsuzluqdan sonsuzlu a ax r, dayanm r. Az rbaycan komediyas strukturu v janr sferas etibar il z ngindir, orada m müxt lif t dqiqat üsullar n n t tbiqi ü ün m kan geni dir. Az rbaycan komediyas tariximizin el bir d n mind formala b ki, mill tin d biyyatdan dünyaya bax d yi m y üz qoyub, d bi prosesd kataklizml r ba verib, Avropa tipli d biyyat formalar etnik-m d ni sistemin ya am t rzinin ifad sind bir s ra orijinal meyll r yarad b.
Traducción manuscrita de las Ruinas del Palacio del Emperador Diocleciano en Spalato, de Robert Adam, en la Real Academia de San Fernando
Rabanal Yus, Aurora
Archivo Espa?ol de Arte , 2010,
Abstract: This article deals with an unpublished manuscript –a partial translation to Spanish of the plates from Robert Adam’s book on the Ruins of the Palace of the Emperor Diocletian at Spalato (1764)– carried out at the Royal Academy of Fine Arts of San Fernando, in Madrid. The author compares this 18th century study with the villa-palace in modern publications, resulting from archaeological excavations, and finds that they do not differ essentially from the analyses made by the Scottish architect. Adam’s work was an excellent example of architectural composition and methodical arrangement of diverse typologies, in direct contrast with the teaching practices at the institution, during a period when the academicians were attempting to modernize them. Este artículo da a conocer una traducción inédita manuscrita, realizada en la Real Academia de San Fernando, de parte de los grabados de la obra de Robert Adam sobre el Palacio de Diocleciano en Spalato (1764). Se estudia la villa-palacio en recientes publicaciones resultantes de las excavaciones arqueológicas, que no difieren excesivamente del análisis y recuperación que hizo el arquitecto escocés en el siglo XVIII. Su obra fue, sin duda, un excelente ejemplo de composición arquitectónica y ordenación de tipologías muy diversas, que contrastan con el método de ense anza practicado en la institución, y que, precisamente en esos a os, se estaba intentando modernizar.
Page 1 /15808
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.