Resumen Se evaluaron las poblaciones de microorganismos en la rizósfera del cultivo de papa en dos diferentes regiones Altoandinas. Se encontró que la población de bacterias totales en la rizósfera de las regiones muestreadas siempre fue mayor que la población de hongos; Puno registra mayores poblaciones de bacterias totales, lo que se puede deber entre otros factores al pH del suelo que es más alcalino que en Huancavelica. Se observa que las poblaciones de Actinomicetos y Azotobacter spp. están influenciadas por el pH y por el tipo de fertilización inorgánica. Asimismo las poblaciones de Bacillus spp. son más abundantes en la región de pH neutro, sin embargo, su presencia en la región de pH ácido confirma su adaptación a estas condiciones. Se observa también un efecto de la variedad de papa sobre las poblaciones de estos microorganismos en la rizósfera, lo que confirma la influencia de los exudados de la planta sobre las poblaciones rizosféricas. Del total de 17 muestras procesadas se obtuvieron 63 aislamientos de Bacillus spp., 29 (46%) de Huancavelica y 34 (54%) de Puno; 37 aislamientos de Actinomicetos, 32 (87%) de Huancavelica y 5 (13%) de Puno y 50 aislamientos de Azotobacter spp., 37 (74%) de Huancavelica y 13 (26%) de Puno, observándose para estos dos últimos casos una mayor diversidad en suelos de pH ácido.
In this paper we describe our efforts towards building a framework that extends the functionality of an Open Access Repository by implementing processes that integrate the ongoing trends in social media into the context of a digital collection—while taking into account the potential of social media, the relevance of open infrastructures and the accessibility of open knowledge. We refer to these processes collectively as the Social Media Engine. The purpose of this paper is twofold: first, we propose to challenge some of the preconceived notions of digital libraries by making repositories more dynamic; and second, by challenging this notion we want to promote public engagement and open scholarship. As a work in progress, we believe that a real challenge lies in emphasizing the connections between documents that can be treated as objects of study as well.
This paper introduces the Canadian Humanities and Social Sciences (HSS) Commons, an open online space where Canadian HSS researchers and stakeholders can gather to share information and resources, make connections, and build community. Situated at the intersection of the fields of digital scholarship, open access, digital humanities, and social knowledge creation, the Canadian HSS Commons is being developed as part of a research program investigating how a not-for-profit, community-partnership research commons could benefit the HSS community in Canada. This paper considers an intellectual foundation for conceptualizing the commons, its potential benefits, and its role in the Canadian scholarly publishing ecosystem; it explores how the Canadian HSS Commons’ open, community-based platform complements existing research infrastructure serving the Canadian HSS research community.
The question of why Pablo Picasso dedicated a considerable amount of his time to writing around 1935 is open to speculation. Many have cited, among possible causes: the Spanish artist’s emotional crisis, the political turmoil in Europe in the period between the two wars, and the menace of a confrontation in Spain. All of these views are predicated on an assumed irreducible conflict between visual composition and verbal expression. However, we cannot forget that Picasso’s interest in alternative methods of expression might have started with his fascination for linguistic structure as a whole during his cubist period. In this article, we explore the possibility that the transition into poetry that we observe in Picasso is simply one more manifestation of his pursuit of alternative approaches to language as a means of representation. In this sense, one thing that remained to be determined was how concrete concepts in both languages cluster into representative semantic categories and how these categories interact with each other in semantic networks.
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