Azufre del suelo : efectos del manejo sobre el azufre del suelo

p.17-23

Análisis foliar en plantas de maíz de cultivo, I : macroelementos

p.23-30

Respuesta del cultivo de maíz a la fertilización nitrogenada en la pampa ondulada, campañas 1980-81 - 1983-84 : modelos predictivos y explicativos

p.65-84

Public-public partnerships (PUPs) in water

A comprehensive global analysis of the use of public-public partnerships in water in over 60 countries.

Replacing failed private water contracts

Failed private water concessions have been terminated and replaced with public sector operations in many countries. The paper reviews the negotiating processes involved in these terminations.

Global experience with electricity liberalisation

This paper examines global experiences with electricity liberalisation relevant to the new legislation on electricity passed by the Indonesian parliament in September 2009. It covers experiences in the UK, EU, USA and ten major developing economies. Finally, the paper comments on a number of the issues emerging from this survey, in particular the reliance on public finance for extensions to electricity networks, the advantages of public finance for cheaper capital and for developing renewables, and the comparative evidence on efficiency.

Sobre la flora y vegetación liquénica epifitica de las formaciones fruticosas de saladar

Se describe la flora liquénica epifitica sobre Arthrocnemum macrostachyum (Moric) Moris en localidades continentales y costeras de la Península Ibérica. Se cita el elemento iranoturánico Caloplaca polycarpoides (Stnr.) M. Steiner & Poelt por primera vez en el occidente de Europa, sobre Atriplex halimus L. en el centro de España.

Algunos líquenes interesantes del Levante peninsular

Se citan algunos táxones liquénicos de la provincia de Valencia nuevos o interesantesparara la flora española: Arthothelium crozalsianum, A. spectabile, Bacidia beckhausii, Caloplaca pollinii, C. suberytraella, Catillaria nigroclavata, Lecidea erythrophaca, Micarea peliocarpa. Microglaena modesta, Pachyphiale cornea, Parmelia acetabulum, Phaeophyscia hirsuta, Schisrnatomma picconianum.

Conscientiousness and laboriousness as academic achievement predictors in a Spanish students sample

To understand academic performance of students, the variable of conscientiousness from personality inventory Big Five, has been recognized as an important key. The aim of this paper is to analyze the relationship established between the personality factor conscientiousness itself and two of its facets, laboriousness and planning, with academic performance, and observe if there are genre differences in consciousness personality factor. A total of 456 Spanish students of high school and college participated in the study. They were requested to answer a personality report and a self inform questionnaire. The results show that both conscientiousness as a personality dimension and the consideration of laboriousness facet are able to predict academic performance, especially with regard to student’s exam marks, classroom attendance and dedication to study. The genre variable pointed out that feminine genre is more conscious than male in that personality factor. From a practical perspective, these results indicate that the establishment of a routine of continuous work is suitable for improving student grades and their adaptation to the educational environment.

The role of societal norms in portion size related behaviour in Denmark and on the Island of Ireland

Purpose:
Social norms influence eating behavior, but little is known about their role in portion size-related behavior. This study
explored the role of social eating norms in Denmark (DK) and the Island of Ireland (IOI) in relation to portion size-related
behavior.

Methods:
In a survey DK (n=1063) and IOI (n=1012) respondents rated social eating norms (11 items) and portion size-related behavior
(3 items) on a 7-point scale (1=strongly disagree to 7=strongly agree). The 3 items relate to: 1) anticipating how
much will be eaten at the beginning of a meal, 2) clearing the plate, and 3) clearing the plate even when full. Sociodemographics
and eating attitudes (e.g. cognitive restraint) were measured as background variables

Results:
Two social eating factors were identified: The ‘limit intake’ norm (6 items) and the ‘plate cleaning’ norm (3 items). The
DK participants reported stronger ‘limit intake’ norms and weaker ‘plate cleaning’ norms than IOI. In both countries
females reported stronger ‘limit intake’ norms while males reported stronger ‘plate cleaning’ norms. In DK, age was
positively correlated with both social eating norm factors. The ‘limit intake’ norm had stronger association with anticipating
how much will be eaten at the beginning of a meal, but the ‘plate cleaning’ norm had stronger association with
clearing the plate. Only the ‘plate cleaning’ norm was associated with clearing the plate even when full.

Conclusions:
The social eating norms vary significantly between countries and genders. The ‘limit intake’ and ‘plate cleaning’ norms
play a role in consumers’ reported portion size-related behavior.

Factors predicting the portion size and perceived fillingness of evening meals in Danish and Iris households

Purpose:
This study explored how meal-related variables, socio-demographics and psychological predispositions affect the portion
size and perceived fillingness of an evening meal in Danish and Irish households.
Methods:
Using survey data collected in 2115 respondents from Denmark (DK) and the Island of Ireland (IOI), we compared four
sets of predictors of the portion size chosen for four evening meals (i.e. pizza/soup/chicken salad/pork meal): Biological
variables (hunger, thirst), socio-demographic variables (gender, age, BMI); psychological predispositions (cognitive
restraint, uncontrolled eating, emotional eating, general health interest) and meal-related variables (expected fillingness,
perceived healthiness, liking, frequency of consumption). We also compared five sets of predictors (the previous
four plus portion size) of perceived portion fillingness.
Results:
Portion size selections were associated mainly with demographic variables (gender, BMI) and psychological predispositions
(cognitive restraint, uncontrolled eating). In addition, only liking and sometimes expected healthiness (mealrelated
variables) appeared as drivers. Conversely, perceived portion fillingness was mostly influenced by the selected
portion size as well as expected fillingness and liking. There were some differences between meals; e.g. GHI not a
predictor for Pizza but a predictor for Chicken salad. Also some country differences were observed; emotional eating
predicted portion selection in the IOI but not DK.
Conclusions:
When making portion size selections at home, psychological predispositions, restrained and uncontrolled eating as well
as meal-related variables, liking and healthiness explained the decisions. However, surprisingly, individuals’ expected
fillingness of a food did not influence their portion size selection but was a driver of fillingness of the selected portion.