Search results for " ASI"
showing 10 items of 571 documents
Relaciones de parentesco en las nuevas familias: disociación entre maternidad/paternidad biológica, genética y social
2015
Se describen y analizan las relaciones de parentesco en las familias monoparentales, homoparentales, tardías o de edad avanzada, con embarazos múltiples, reconstituidas, adoptivas y las que recurren a las técnicas de reproducción asistida. En estas familias se puede producir una disociación entre relaciones conyugales y relaciones filiales; entre sexualidad y reproducción; entre pareja conyugal, pareja parental y pareja progenitora; y la creación de lazos de filiación independientemente de tener una relación de pareja. Asimismo, frente a la biparentalidad y heteroparentalidad, se pueden establecer relaciones de monoparentalidad, homoparentalidad, coparentalidad y pluriparentalidad. Estas fa…
Forecasting Financial Crises and Contagion in Asia Using Dynamic Factor Analysis
2009
In this paper we use principal components analysis to obtain vulnerability indicators able to predict financial turmoil. Probit modelling through principal components and also stochastic simulation of a Dynamic Factor model are used to produce the corresponding probability forecasts regarding the currency crisis events affecting a number of East Asian countries during the 1997-1998 period. The principal components model improves upon a number of competing models, in terms of out-of-sample forecasting performance.
Regional and global contributions of air pollution to risk of death from COVID-19
2020
Abstract Aims The risk of mortality from the coronavirus disease that emerged in 2019 (COVID-19) is increased by comorbidity from cardiovascular and pulmonary diseases. Air pollution also causes excess mortality from these conditions. Analysis of the first severe acute respiratory syndrome coronavirus (SARS-CoV-1) outcomes in 2003, and preliminary investigations of those for SARS-CoV-2 since 2019, provide evidence that the incidence and severity are related to ambient air pollution. We estimated the fraction of COVID-19 mortality that is attributable to the long-term exposure to ambient fine particulate air pollution. Methods and results We characterized global exposure to fine particulates…
Bezkontakta fotopletizmogrāfijas metode ādas asinsrites monitoringam dažādu dziļumu gultnēs
2018
Darba mērķis ir izpētīt vai bezkontakta fotopletizmogrāfijas (bPPG) metode ir kvalitatīva metode cilvēka asinsrites monitoringam. Darbā tika pētīts, kā mainās plaukstas asinsrite dažādu fizioloģisko provokāciju ietekmē, izmantojot bPPG metodi, dažādu plaukstas dziļumu gultnēs. Darbs tika veikts izmantojot iekārtu, kas sastāv no divu dažādu spektra diapazonu apgaismotājiem (530 nm un 810 nm) un videokameras. Ar iekārtas palīdzību tika uzņemti video ar plaukstu, no kura tika iegūti fotopletizmogrāfiskie signāli un to amplitūdas dinamika. Ar bPPG metodi tika reģistrētas plaukstas asins apjoma pulsāciju amplitūdas izmaiņa sildīšanas, dzesēšanas, oklūzijas un sildošās smēres ietekmē. Rezultāti p…
Caucalido platycarpi-Vicietum michauxii — a new weed association from crop fields of Kyrgyzstan (Middle Asia)
2014
Abstract The study presents the results of geobotanical investigations conducted in crop fields in the western Tian Shan Mts in Kyrgyzstan (Middle Asia). The main research focused on classification of weed communities developing within this poorly investigated area, were conducted in the vicinity of Bishkek and Kara-Balta in 2010. Altogether, 299 phytosociological relevés were sampled using the Braun-Blanquet method. Based on all segetal vegetation patches, the analyses distinguished a new association: Caucalido platycarpi-Vicietum michauxii. The results of these phytosociological studies fill a gap in the knowledge about the syntaxonomical diversity of the Middle Asia region, which is one …
A report on the conservation status of segetal weeds in Tajikistan
2014
Summary Intensification of agriculture has significantly diminished the populations of segetal weeds worldwide in recent decades. Remarkable changes to the entire flora and vegetation of man-made habitats are being observed in agroecosystems. The present study analyses, for the first time, the threat status of segetal weeds in Tajikistan. A group of 871 weed species were evaluated against IUCN criteria. The assessment of threat status revealed that 214 weed taxa have to be regarded as threatened in Tajikistan, including 18 endemic and four subendemic plants. Five species have been classified as extinct, 27 as critically endangered, 27 as endangered, 39 as vulnerable, 34 as near threatened a…
Una reflexión iusfilosófica y política sobre las fronteras
2016
Este artículo examina el concepto de frontera frente a la movilidad humana, evidenciando cómo el miedo y la violencia son dos claves básicas en la articulación de las barreras territoriales. Este punto de partida, permite analizar la relación entre frontera, Estado-nación y derechos. Se aborda así de modo crítico, cómo la idea de justicia, vinculada al monopolio estatal a partir de la teoría rawlsiana, no permite justificar, desde una dimensión moral y jurídica, la función de control y exclusión que desempeña la frontera en la actualidad. Cuando los principios de justicia no se toman en consideración en fenómenos tan relevantes como la movilidad humana, prácticas como la externalización de …
Ancestry and demography and descendants of Iron Age nomads of the Eurasian Steppe
2017
During the 1st millennium before the Common Era (BCE), nomadic tribes associated with the Iron Age Scythian culture spread over the Eurasian Steppe, covering a territory of more than 3,500 km in breadth. To understand the demographic processes behind the spread of the Scythian culture, we analysed genomic data from eight individuals and a mitochondrial dataset of 96 individuals originating in eastern and western parts of the Eurasian Steppe. Genomic inference reveals that Scythians in the east and the west of the steppe zone can best be described as a mixture of Yamnaya-related ancestry and an East Asian component. Demographic modelling suggests independent origins for eastern and western g…
Developmental expression of two Haliotis asinina hemocyanin isoforms
2005
Hemocyanins are large copper-containing respiratory proteins that play a role in oxygen transport in many molluscs. In some species only one hemocyanin isoform is present while in others two are expressed. The physiological relevance of these isoforms is unclear and the developmental and tissue-specific expression of hemocyanin genes is largely unknown. Here we show that two hemocyanin genes in the gastropod Haliotis asinina, which encode H. asinina hemocyanin (HaH1) and HaH2 isoforms, are developmentally expressed. These genes initially are expressed in a small number of mesenchyme cells at trochophore and pre-torsional veliger stages, with HaH1 expression slightly preceding HaH2. These ce…
Populetum pamiricae ass. nova – an endemic forest association to Pamir in Tajikistan (Middle Asia)
2015
Abstract The floristic structure, distribution and habitat requirements of a forest syntaxon, Populetum pamiricae ass. nova is described. The potential range of the Populetum pamiricae association comprises the mountains of eastern Tajikistan (Pamir Alai Mts), Kashgaria in western China (Kunlun Shan Mts) and north-eastern Afghanistan (Hindu Kush Mts) in Middle Asia. The biotope of this community comprises of high mountain river valleys situated at elevations between 2,500 and 3,200 m above sea level. Phytocoenoses of the Populetum pamiricae association are characterized by the apparent domination in the tree layer of a diagnostic species, Populus pamirica. The tree stand has a mean cover ar…