Search results for "EFE"
showing 10 items of 5785 documents
Efectos de la digitalización en la relación entre periodistas y políticos: desintermediación y pactos comunicativos
2020
Los efectos de los medios de comunicación en el miedo entre los inmigrantes latinos en Massachusetts
2020
La fortificación del Reino de Valencia en la década de1640 a la luz de la revolución militar
2019
This article proposes a study of the traditions in defensive architecture that concurred in the projects designed by Spanish military engineers for the fortification of the Valencian frontier in 1648 and 1649, in the context of the War of Catalonia (1640-1652). For this it is essential to follow the route of the Valencian adaptations to the military revolution in the matter of fortifications throughout the sixteenth century and compare them with those brought to Valencia in 1641 by the Marquis of Leganes and his engineers from the school of Milan.
Androgēnie anaboliskie steroīdi, to ietekme uz veselību un izplatība sabiedrības vidū
2016
Ārējais izskats spēj ietekmēt apkārtējo sabiedrības viedokli, veidojot priekšstatu par cilvēka raksturu un spējām. Izsenis cilvēkus ieinteresējis, kā izmantojot mazāku piepūli iegūt pievilcīgāku ķermeņa izskatu un labāku sportisko sniegumu. Lai sasniegtu mērķi cilvēki dažkārt ir gatavi izmēģināt visdažādākos līdzekļus, lai gan tiem ir risks pasliktināt veselību un izraisīt nopietnas blakusparādības. Šī darba mērķis bija noskaidrot, vai Latvijā ir izplatīta androgēno anabolisko steroīdu lietošana, kādi ir to lietošanas paradumi un, kurš no testosterona līdzekļiem BENU aptieku tīklā ir vispieprasītākais laika posmā no 2013. gada 1. janvāra līdz 2015. gada 31. decembrim. Pēc iegūtajiem aptauju…
Papel de las leguminosas en la alimentación actual
2010
5 páginas, 2 figuras, 2 tablas.-- et al.
Dynamics of soil organic carbon pools after agricultural abandonment
2014
Abandonment of agricultural land and the subsequent recolonization by natural vegetation is known to cause increases in C contents, contributing to reduction in atmospheric CO2 concentrations. Assessment of the possible mitigation of CO2 excess requires understanding the SOC dynamics, the origin of C pools and the pathways of their transformation. The aims of this work were to assess, by using the δ13C signature, the changes of old and new organic C in total (soil organic carbon, SOC) and labile (microbial biomass C, MBC, dissolved organic C, DOC, CO2 efflux from soil) pools after vegetation change from vineyard (C3) to grassland (C4) under semiarid Mediterranean climate. Colonization of ab…
Chapter 12 Role of Iron in Plant–Microbe Interactions
2009
Iron is an essential micronutrient for plants and associated microorganisms. Iron nutrition of these organisms relies on the soil supply. However, bioavailability of iron in cultivated soils is low. Plants and microorganisms have thus evolved active strategies of iron uptake based on acidification, chelation, and/or reduction processes. Iron acquisition by these organisms leads to complex interactions ranging from mutualism to competition. In the rhizosphere, plants support abundant and active microbial communities through the release of rhizodeposits. Iron uptake by these microorganisms and by the host plant decrease even more the concentration of iron in solution. Therefore, there is an i…
The many faces of human sociality: uncovering the distribution and stability of social preferences
2018
There is vast heterogeneity in the human willingness to weigh others' interests in decision making. This heterogeneity concerns the motivational intricacies as well as the strength of other-regarding behaviors, and raises the question how one can parsimoniously model and characterize heterogeneity across several dimensions of social preferences while still being able to predict behavior over time and across situations. We tackle this task with an experiment and a structural model of preferences that allows us to simultaneously estimate outcome-based and reciprocity-based social preferences. We find that non-selfish preferences are the rule rather than the exception. Neither at the level of …
Face masks effectively limit the probability of SARS-CoV-2 transmission.
2021
Masking out air sharing The effectiveness of masks in preventing the transmission of severe acute respiratory syndrome coronavirus 2 has been debated since the beginning of the COVID-19 pandemic. One important question is whether masks are effective despite the forceful expulsion of respiratory matter during coughing and sneezing. Cheng et al. convincingly show that most people live in conditions in which the airborne virus load is low. The probability of infection changes nonlinearly with the amount of respiratory matter to which a person is exposed. If most people in the wider community wear even simple surgical masks, then the probability of an encounter with a virus particle is even fur…
Ethically Researching Local Impacts of Environmental Change without Travel
2021
Responses to the COVID-19 pandemic, which began in 2020, included local and international travel restrictions alongside limits on face-to-face gatherings. These measures impinged on participatory research examining local impacts of environmental change. In response, many researchers adopted techniques that could be implemented without travel. This article explores some of the consequent research ethics issues.