Dispersal in the Desert: Genetic Diversity and Population Structure of the Guinea Baboon (Papio papio) in Mauritania

info:eu-repo/semantics/publishedVersio

Mudanças, mitos e incertezas da produção de feijão: 1985 a 2010.

O presente trabalho tem por objetivo apresentar análises de movimentos e quantidade ofertada por estado e safra, considerando apenas a produção do feijão comum.CONAFE

In search of the urban variable : Understanding the roots of urban planning in Portugal

This article demonstrates how public control over the street was at the origin of modern urban planning in Lisbon. The increased pressure over the street in the nineteenth-century city demanded increased public intervention, which was at the roots of urban planning as practice and as a body of theory. The strategic character assumed by urban planning derived from the fact that it was at the crossroads of the most important problems that nineteenth-century cities experienced: sanitation, circulation, and beautification. The preparation of the first Portuguese law on urban planning (1864) and the first improvement plan (1881) resulted from this need to exercise public monopoly over the use of the city streets. However, the financial, political, and technical conditions defined the scope of possibilities for the programme of improvement and beautification of the Portuguese capital. This article analyses the compromises between the forces driving modernisation and the limits of the possibilities.info:eu-repo/semantics/publishedVersio

Does cultural background influence the dissemination and severity of the COVID-19 pandemic?

The COVID-19 pandemic has spread throughout the globe affecting countries worldwide. However, several differences have been observed in the number of daily new cases, the COVID-19 reproduction rate, and the severity of the disease in different countries. Previous studies have mostly highlighted government restriction policies to mitigate the pandemic effects as reasons for such differences. This study focuses on 101 countries and proposes that each country’s cultural background is also accountable for such differences. We considered the six Hofstede’s cultural dimensions (power distance, individualism, masculinity, uncertainty avoidance, long term orientation, and indulgence) and statistically analyzed their correlation with several COVID-19 impact metrics in comparison to several restriction policies. Our results support our claim that national culture influences both acceptance and subsequent adoption of restriction policies and the implementation by each government of those policies. We highlight that the attitudes towards and trust in political institutions, policies and governance is influenced by the cultural background, which is reflected in the pandemic numbers. As a main takeaway from this study, we conclude that data-driven models which aim at predicting the pandemic impact evolution at a global scale should also include variables that reflect the cultural background of each nation.info:eu-repo/semantics/publishedVersio

Avaliação de cultivares de aveia branca em Dourados, MS, no período de 2002 a 2004.

A aveia branca é uma importante espécie para produção de grãos e forragens no período de outono/inverno, mas é pouco cultivada em Mato Grosso do Sul. Identificar e indicar cultivares com boa adaptação às condições edafoclimáticas da Região Sul de Mato Grosso do Sul podem contribuir para a expansão da área semeada com este cereal.bitstream/item/38722/1/BP200631.pdfDocumento on-line

Avaliação de cultivares de triticale em Dourados, MS, no período de 2002 a 2004.

O triticale, híbrido natural entre o trigo e o centeio, é uma importante espécie para produção de grãos para consumo humano e animal, além de palha para a cobertura do solo, mas é pouco cultivado no período outono/inverno em Mato Grosso do Sul. Identificar e indicar cultivares com boa adaptação às condições edafoclimáticas da Região Sul de Mato Grosso do Sul podem contribuir para a Expansão da área semeada com este cereal.bitstream/item/38724/1/BP200632.pdfDocumento on-line

ANALYSIS OF THE PERFORMANCE OF ABOVE-KNEE AMPUTEES IN CLIMBING STAIRS

INTRODUCTION Although a large investment has been already made in the study of the walking performance of amputees a greater understanding of the capacities of these subjects is still needed. In this context we undertook the present study in order to analyse the performance of above-knee amputees (AKA) in tasks related to locomotion. We studied two groups of individuals, one of able bodied (AB) subjects and a AKA group, perform ing two different tasks, namely, level ground (LG) walking and climbing stairs (CS). METHODS For each individual and for each task three trials were recorded. The CS task corresponded to the. climbing of a staircase of three 16 cm in height steps. The performances were normalised by comparing a complete LG walking cycle and the climbing CS from the first to the second step. These performances were filmed by two video cameras, one located at the side and another at the back of the track. A thirteen segments body model is used to calculate the center of mass (CM). The percent values of the CM co-ordinates relative to the subject's height is calculated along the vertical (Z axis) , the horizontal antero-posterior (Y axis) and the (axis X) normal to the previous ones using a method developed by Enseberg et al. (1992). The sagittal and lateral inclinations of the trunk and the sagittal rotation of the knee are also computed. RESULTS AND DISCUSSIONS The CM for the AKA group performing the LG and CS tasks is located at a lower level (Z), further to the back (Y) and, generally, on the side of the prosthesis . (X) as compared with its location for the AB group performing the same tasks. These results agree with those obtained Engsberg et al. (1992) for the LG task. The CM location along the Z axis is determined fundamentally by the forward flexion of the trunk and, for both groups of subjects, is lower for the CS task than for the LG tasks as a result of the need to place this center on the vertical of the propulsive limb. For both tasks, the CM location along the Y axis is similar for the two groups and only slightly more posterior for the AKA group in result of the larger backwards rotation of the arm opposite to the prosthesis. The CM location along the X is, for the AKA group, always opposite to the prosthetic side as a result of the trunk compensating inclination in that direction. For the AB group, the CM oscillates naturally from side to side of the body sagittal plane. CONCLUSIONS We may conclude from these results that the two tasks correspond to significantly different performances and that the differences are more profound for the AKA group. The use of a staircase to test the performance of AKA subjects is clinically relevant as it brings up some of the most serious problems associated with the quality of adaptation of the prosthesis to the patient. REFERENCES Engsberg, J., K. Tedford & J. Harder (1992). Center of mass location and segment angular orientation of below-knee amputee and able-bodied children during walking. Arch. Phys. Med. Reahabili, 73, 1163-1168

Electron transfer driven decomposition of adenine and selected analogs as probed by experimental and theoretical methods

We report on a combined experimental and theoretical study of electron transfer induced decomposition of adenine and a selection of analogue molecules in collisions with potassium atoms (K). Time-of-flight negative ion mass spectra have been obtained in a wide collision energy range (6–68 eV in the centre-of-mass frame), providing a comprehensive investigation of the fragmentation patterns of purine, adenine, 9-methyl adenine, 6-dimethyl adenine and 2-D adenine. Following our recent communication about selective hydrogen loss from the transient negative ions (TNI) produced in these collisions [T. Dunha et al. J. Chem. Phys. 148, 021101 (2018)], this work focuses on the production of smaller fragment anions. In the low-energy part of the present range, several dissociation channels that are accessible in free electron attachment experiments are absent from the present mass spectra, notably NH2 loss from adenine and 9-methyl adenine. This can be understood in terms of a relatively long transit time of the K+ cation in the vicinity of the TNI tending to enhance the likelihood of intramolecular electron transfer. In this case, the excess energy can be redistributed through the available degrees of freedom inhibiting fragmentation pathways. Ab initio theoretical calculations were performed for 9-methyl adenine (9-mAd) and adenine (Ad) in the presence of a potassium atom and provided a strong basis for the assignment the lowest unoccupied molecular orbitals accessed in the collision process