scholarly journals Comparación de metodologías de determinación de la conductividad eléctrica y concentración iónica en suelos de la provincia de Buenos Aires

2019 ◽  
pp. e003
Author(s):  
Victor Hugo Merani ◽  
Guillermo Jose Millan ◽  
Daniel Adalberto Ferro ◽  
Luciano Larrieu ◽  
Daniel Bennardi ◽  
...  
Keyword(s):  
Buenos Aires

La salinidad del suelo es uno de los factores que mayores limitaciones ofrece a la explotación agropecuaria. Ocupa el segundo lugar como causante de la degradación mundial de suelos, detrás de la erosión. La determinación de la Conductividad Eléctrica (CE) es la metodología indirecta más utilizada en la determinación de sales. Se utilizaron 63 muestras de suelo pertenecientes a la región ecológica denominada Pampa Húmeda Argentina. Se realizó el muestreo, secado y desagregado de los suelos y luego se procedió con la homogeneización, molienda y tamizado por 2 mm. Se preparó la pasta saturada y se la dividió en tres fracciones. A la primera fracción se midió la CE a los 10 minutos y a las 24 horas de reposo. A la segunda fracción se la subdividió en dos partes iguales. Ambas se filtraron con vacío, una tras diez minutos de reposo y la otra al cabo de 24 horas para obtener en cada caso el extracto de saturación respectivamente, midiéndose la CE. En la tercera fracción se obtuvo el quíntuple extracto según Nijensohn, 1988. Para bajos valores de CE los resultados que se obtienen empleando las metodologías estudiadas son similares. A partir de alrededor de 1 dS m-1 comienzan a divergir. Asimismo, puede verse que prácticamente no hay diferencias entre los valores de CE hasta alrededor de 20 dS m-1. Se obtuvieron modelos de regresión lineal que permiten estimar la CE a las 24hs, como así también la concentración iónica y la RAS en los mismos extractos a partir de metodología que reducen el tiempo de reposo de la pasta saturada y en consecuencia se logra agilizar el proceso de determinación y diagnóstico de la alcalinidad de los suelos. 

Open discussion

1982 ◽  
Vol 99 ◽  
pp. 605-613
Author(s):  
P. S. Conti
Keyword(s):  
Buenos Aires ◽  
Large Mass ◽  
List Type ◽  
Common Phenomenon ◽  
Open Discussion ◽  
The Stability ◽  
Ring Nebulae

Conti: One of the main conclusions of the Wolf-Rayet symposium in Buenos Aires was that Wolf-Rayet stars are evolutionary products of massive objects. Some questions:–Do hot helium-rich stars, that are not Wolf-Rayet stars, exist?–What about the stability of helium rich stars of large mass? We know a helium rich star of ∼40 MO. Has the stability something to do with the wind?–Ring nebulae and bubbles : this seems to be a much more common phenomenon than we thought of some years age.–What is the origin of the subtypes? This is important to find a possible matching of scenarios to subtypes.

El Acuerdo de Buenos Aires

1998 ◽  
Vol 26 (152) ◽  
pp. 576
Author(s):  
Oscar H. del Brutto Perrone ◽  
José Antonio Bueri ◽  
Antonio Culebras ◽  
Jordi Matías-Guiu Guía ◽  
Marco Tulio Medina Hernández ◽  
...  
Keyword(s):  
Buenos Aires

Rebellious Wallflowers and QueerTangueras: The Rise of Female Leaders in Buenos Aires’ Tango Scene

2018 ◽  
Vol 36 (2) ◽  
pp. 173-197
Author(s):  
Juliet McMains
Keyword(s):  
Social Norms ◽  
Buenos Aires ◽  
Female Leaders ◽  
Same Sex ◽  
Overlapping Communities ◽  
Heterosexual Women ◽  
Bisexual And Transgender ◽  
History Of

This paper interrogates the history of same-sex dancing among women in Buenos Aires' tango scene, focusing on its increasing visibility since 2005. Two overlapping communities of women are invoked. Queer tangueras are queer-identified female tango dancers and their allies who dance tango in a way that attempts to de-link tango's two roles from gender. Rebellious wallflowers are women who practice, teach, perform, and dance with other women in predominantly straight environments. It is argued that the growing acceptance of same-sex dancing in Argentina is due to the confluence of four developments: 1) the rise of tango commerce, 2) innovations of tango nuevo, 3) changing laws and social norms around lesbian, gay, bisexual, and transgender rights, and 4) synergy between queer tango dancers and heterosexual women who are frustrated by the limits of tango's gender matrix. The author advocates for increased alliances between rebellious wallflowers and queer tangueras, who are often segregated from each other in Buenos Aires' commercial tango industry.

Pablo Neruda's Transnational Modernist Networks: Colombo-Madrid-London-Buenos Aires (1927–1933)

2017 ◽  
Vol 12 (2) ◽  
pp. 198-225
Author(s):  
Patricia Novillo-Corvalán
Keyword(s):  
Chamber Music ◽  
Latin American ◽  
Buenos Aires ◽  
Cultural Institutions ◽  
Complex Composition ◽  
British Colonial ◽  
The One ◽  
Composition Process ◽  
In Transit ◽  
Standing Question

This article positions Pablo Neruda's poetry collection Residence on Earth I (written between 1925–1931 and published in 1933) as a ‘text in transit’ that allows us to trace the development of transnational modernist networks through the text's protracted physical journey from British colonial Ceylon (now Sri Lanka) to Madrid, and from José Ortega y Gasset's Revista de Occidente (The Western Review) to T. S. Eliot's The Criterion. By mapping the text's diasporic movement, I seek to reinterpret its complex composition process as part of an anti-imperialist commitment that proposes a form of aesthetic solidarity with artistic modernism in Ceylon, on the one hand, and as a vehicle through which to interrogate the reception and categorisation of Latin American writers and their cultural institutions in a British periodical such as The Criterion, on the other. I conclude with an examination of Neruda's idiosyncratic Spanish translation of Joyce's Chamber Music, which was published in the Buenos Aires little magazine Poesía in 1933, positing that this translation exercise takes to further lengths his decolonising views by giving new momentum to the long-standing question of Hiberno-Latin American relations.

From the Tower of London to the Thomas More Society of Buenos Aires: “Give me thy grace, good Lord, to set the world at nought”

Moreana ◽  
2005 ◽  
Vol 42 (Number 164) (4) ◽  
pp. 187-206
Author(s):  
Clare M. Murphy
Keyword(s):  
Buenos Aires ◽  
Short History ◽  
Thomas More ◽  
Tower Of London ◽  
Hebrew Poetry ◽  
Prayer Book ◽  
The World ◽  
History Of ◽  
Book Of Hours ◽  
Almost All

The Thomas More Society of Buenos Aires begins or ends almost all its events by reciting in both English and Spanish a prayer written by More in the margins of his Book of Hours probably while he was a prisoner in the Tower of London. After a short history of what is called Thomas More’s Prayer Book, the author studies the prayer as a poem written in the form of a psalm according to the structure of Hebrew poetry, and looks at the poem’s content as a psalm of lament.

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