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El trabajo se realizó en la FCA-UNR en otoño, invierno y primavera, con el objetivo de evaluar el efecto de los sistemas de producción, forma de sujeción y días de almacenamiento sobre el rendimiento y las pérdidas poscosecha. El ensayo se realizó teniendo en cuenta tres factores: 1) sistemas de producción: invernadero (I), media sombra (MS), manta fl otante (MF) y campo (C), 2) formas de sujeción: manojo (A) y granel (G) y 3) días de almacenamiento. Las variables medidas fueron: rendimiento, materia seca, pérdida de peso por descarte y por agua e índice de color. En las tres épocas, I obtuvo el mayor rendimiento y menor contenido de materia seca. I y MF obtuvieron las menores pérdidas de peso por descarte en otoño; en invierno y otoño aumentan con los días de almacenamiento. I y MF registraron las menores pérdidas de peso por agua en otoño en los días 3 y 6 de almacenamiento. La acelga mostró una tendencia hacia el verde amarillento en MF en otoño, C en invierno e I en primavera, en todos los días de almacenamiento.

Learning environments can benefit from the enactive concept which considers human and technological aspects as coupled together so that interaction is seen as a cycle of perceptually guided actions. Although existing literature reviews have been conducted to address the use of technologies in enactive learning environments, we observe they do not address the relations of technology with core concepts of enactive systems and its social aspects. This paper presents a systematic literature review (SLR) to investigate if and how core concepts of enactive systems are being addressed by learning environments. The SLR was based on the PRISMA protocol, and considered relevant sources of studies (ACM DL, IEEE Xplore, SpringerLink, Scopus, Scielo). We based our analysis on a set of 104 selected articles (from 4514 raised), scrutinized with regards to contextual information, and a proposed set of categories of data related to subjects identified in the studies (e.g., embodiment, technology, social, among others). Our work reveals the types of technologies being used, the types of enactive interactions promoted by the technology-based environments, and the main challenges for a research agenda in the field. Our discussion raised open challenges related to a need for a common vocabulary, a framework to organize concepts in the field, and missing points that deserve further research, such as social aspects of enactive system.

Computing systems have a tremendous influence on how we understand the world. Due to its ubiquity and pervasiveness over the past decade, computing technology has created societal challenges (e.g., related to justice, sustainability, ethics, peace) that demand we reexamine how we design computer-based systems. Drawing on a phenomenological understanding of the human-technology-society relation, this work contributes to the discussion on such challenges and to design practice with a framework we call socially aware design (SAwD). We developed this framework to bring awareness to the human-technology-society relation in the design process. In this paper, we present the framework's main concepts, its underlying worldview, and its methodological base with reference to its origins. We illustrate the framework with design practices that we have experienced in designing systems in diverse situations. We also summarize key aspects of the proposed human-technology-society coupling relevant to the practice of technology design as a social phenomenon, which might open new agendas in the field. [ABSTRACT FROM AUTHOR]

Enormous changes in the computing field are being experienced, altering the way we relate ourselves with computational technology. If computers had at first limited function and presence in our lives, they are now being used everywhere, all the time, for a multitude of purposes and interaction means for interactivity, supporting even our social relations. This shift calls for new ways of evaluating systems, demanding attention not only to usability and accessibility issues but also to the emotional and affective ones. This paper presents a brief review on theory and methods for affective evaluation of computer systems, as a preliminary discussion on the suitability of existing methods for social software applications. The discussion is instantiated in inclusive social software - Vila na Rede, a system developed under a participatory design approach with the purpose of fostering a digital culture among the less favoured segment in the Brazilian society. [ABSTRACT FROM AUTHOR]

Abstract: This study evaluated the absorption and metabolism of milk thistle flavonolignans silychristin, silydianin, silybin and isosilybin isomers (all together known as silymarin) in humans. Fourteen volunteers consumed an extract of milk thistle and urine was collected up to 48h after consumption. Thirty-one metabolites were identified in urine by means of HPLC–MS/MS, monoglucuronides being the most common excreted form, followed by sulphate–glucuronides and diglucuronides, respectively. The excretion of monoglucuronides peaked 2h after consumption, whereas sulphate–glucuronide and diglucuronide excretion peaked at 8h. The bioavailability of milk thistle flavanolignans was 0.45±0.28% (mean±SD). In conclusion, milk thistle flavonolignans are extensively modified after ingestion and recovered in urine as sulpho- and glucuronyl-conjugates, indicating a strong affinity for hepatic phase II enzymes. All future studies (in vitro and in vivo) dealing with the effects of milk thistle should start by considering the modification of its flavonolignans after ingestion by humans. [Copyright &y& Elsevier]

Achalasia is a rare neuromuscular esophageal disorder in children. There are many surgical options to treatment including botulinum toxin (Botox) injections, oral pharmacologic therapies with nitrates and calcium channel blockers, pneumatic dilation (PD), and surgical myotomy (open surgery, endoscopy, laparoscopy and recently robotic approach). In pediatric age, usually, Heller's myotomy is the main choice. Laparoscopic approach is known and standardized. Few robotic have been published. We decided to report our first case to share our experience with scientific community. • Achalasia is a rare neuromuscular esophageal disorder in children. • Heller's myotomy is the main surgical technique and it is associated with fundoplication in the majority of patients. • Robotic assisted surgery reveled a safe and efficient option in pediatric patient. [ABSTRACT FROM AUTHOR]