Los alcoxidos metálicos en el equilibrio carbonilo-olcohol

[...]Una aspiración notablemente sentida en el trabajo en Química Orgánica,es la de poder disponer de r' acciones que por su especificidad y unilateralidad, permitan al investigador, tanto en el campo puramente sintético, como en el de determinaciones estructurales, sacar consecuencias ciertas o trazarse un camino seguro a priori. Desde el descubrimiento de los reactivos órgano-magnésicos (1900) los esfuerzos dirigidos en este sentido, se han visto compensados con el hallazgo de varios grupos de compuestos que gozan de estos privilegios: especificidad y unilateralidad

Repelência à água de solos arenosos com diferentes teores de matéria orgânica.

EVINCI. Resumo 028

Extração de substâncias húmicas em solos sob diferentes plantios na região de Caçador, SC.

Resumo

Indução à repelência à água em solo arenoso o partir de extratos naturais hidrofóbicos.

bitstream/CNPF-2009-09/44432/1/com_tec206.pd

Moving conferences online: lessons learned from an international virtual meeting

We consider the opportunities and challenges associated with organizing a conference online, using a case study of a medium-sized (approx. 400 participants) international conference held virtually in August 2020. In addition, we present quantifiable evidence of the participants' experience using the results from an online post-conference questionnaire. Although the virtual meeting was not able to replicate the in-person experience in some aspects (e.g. less engagement between participants) the overwhelming majority of respondents found the meeting an enjoyable experience and would join similar events again. Notably, there was a strong desire for future in-person meetings to have at least some online component. Online attendance by lower-income researchers was higher compared with a past, similar-themed in-person meeting held in a high-income nation, but comparable to one held in an upper-middle-income nation. This indicates that online conferences are not a panacea for diversity and inclusivity, and that holding in-person meetings in developing economies can be at least as effective. Given that it is now relatively easy to stream contents of meetings online using low-cost methods, there are clear benefits in making all presented content accessible online, as well as organizing online networking events for those unable to attend in person

Analysis and Verification of Service Interaction Protocols - A Brief Survey

Modeling and analysis of interactions among services is a crucial issue in Service-Oriented Computing. Composing Web services is a complicated task which requires techniques and tools to verify that the new system will behave correctly. In this paper, we first overview some formal models proposed in the literature to describe services. Second, we give a brief survey of verification techniques that can be used to analyse services and their interaction. Last, we focus on the realizability and conformance of choreographies.Comment: In Proceedings TAV-WEB 2010, arXiv:1009.330

A MASSIVE OPEN ONLINE COURSE (MOOC) FOR THE MULTIDISCIPLINARY DESIGN OF BRIDGES

In last years, the traditional blackboard teaching has been incrementally supplemented by visual aids like slide projectors and videos. The phenomenal growth of the Internet has brought in new teaching media, such as Massive Online Open Courses (MOOCs) that open the educational experience up to a broader and more distant set of students. This easy access to education can increase motivation and it is a useful commercial tool for universities. Unlike other disciplines (such as economics or psychology), the MOOCs are rarely used to spread Civil Engineering courses. To fill this gap, and to encourage the use of MOOCs among Civil Engineering Schools, this paper presents the experience of the MOOC for the multidisciplinary design of bridges created by the University of Castilla-La Mancha. This MOOC is based on the experiences learned from the contest on bridge construction with knex for undergraduate students organized by this university in 2015, 2016 and 2017

Массовый открытый онлайн-курс (МООК) для проектирования мостов

Traditionally, Spanish schools of civil engineering provide their students a class on “Technical English” in order to develop their language skills. However, this class does not cover all the skills that the student would need in the labor market and mainly focuses in the reading and writing skills, and in a lower degree in the speaking and listening ones. This paper proposes a series of innovative and informal training activities, such as cine-forum on technical civil engineering topics and role playing on real professional situations, that allow Spanish civil engineering students to develop English skills, that can rarely be worked in the classroom (i. e. speaking, negotiating and conversing), which encourage debate, participation, and foster their self-confidence to speak about technical-English topics in public. Although the students’ level of English is much lower than expected, they all agree on the importance of technical English for their future career. The results also show the students’ lack in skills that are difficult to train in regular classes (speaking and talking). Consequently, this situation would require to provide complementary activities like the ones suggested in this project in order to develop these skills and increase the students’ demand for engineering classes taught in English.В последние годы традиционное преподавание с использованием обычной доски дополняется визуальными средствами, такими как слайд-проекторы и видео. Феноменальный рост Интернета привел к появлению новых учебных средств массовой информации, таких как онлайн-курсы общего пользования, которые делают доступными образовательные ресурсы для более широкого и удаленного контингента студентов. Легкий доступ к образованию может повысить мотивацию, что является полезным коммерческим инструментом для университетов. В отличие от других дисциплин, таких как экономика или психология, МООК редко используются для распространения курсов по дисциплинам направления «Строительство». Чтобы восполнить этот пробел и поощрить использование МООК среди строительных университетов, в настоящем документе представлен опыт создания такого курса для многодисциплинарного проектирования мостов, созданных Университетом Кастилии и Ла Манча. Этот курс основан на опыте, полученном на конкурсе по строительству мостов с заданиями для студентов‑магистрантов, организованных Университетом Кастилии и Ла Манча в 2015, 2016 и 2017 годах