19 research outputs found
Salida de campo a Etang de Fournelet (Francia) el 1 de mayo de 1954
No full textSalida de campo a Etang de Fournelet, seguramente cerca a la reserva natural de La Camarga, en el delta del río Ródano (Provenza), el 1 de mayo de 1954, de la que se anotaron observaciones sobre las siguientes aves: Actitis hypoleucos (Andarríos chico, llamado Actynioides hypoleucus por el autor), Circus aeruginosus (Aguilucho lagunero occidental), Himantopus himantopus (Cigüeñuela común), Motacilla flava (Lavandera boyera), Saxicola rubetra (Tarabilla norteña), Sylvia conspicillata (Curruca tomillera), Sylvia undata (Curruca rabilarga), Tringa glareola (Andarríos bastardo), Tringa nebularia (Archibebe claro) y Vanellus vanellus (Avefría europea). Incluye observaciones adicionales sobre vegetación y peces.Firld trip to Etang de Fournelet (France), probably near the nature reserve of The Camargue, at the delta of the Rhône River (Arles), the 1st of May of 1954, of which there were noted observations about the following birds: Actitis hypoleucos (Common Sandpiper, refered as Actynioides hypoleucus by the author), Circus aeruginosus (Western Marsh-Harrier), Himantopus himantopus (Black-winged Stilt), Motacilla flava (Yellow Wagtail), Saxicola rubetra (Whinchat), Sylvia conspicillata (Spectacled Warbler), Sylvia undata (Dartford Warbler), Tringa glareola (Wood Sandpiper), Tringa nebularia (Common Greenshank) and Vanellus vanellus (Northern Lapwing). Additional observations about vegetation and fishes are included
James Mim
Get PDFabstract: James left his home in 1988 and reached Etang in Ethiopia in 1989.
“Lost Boys Found” is an ongoing, interdisciplinary project that is collecting, recording and archiving the oral histories of the Lost Boys/Girls of Sudan. The collection is a work-in-progress, seeking to record the oral history of as many Lost Boys/Girls as are willing, and will be used in a future book.Region: BentiwThis picture and bio was donated to the "Lost Boys Found" oral history project from The Arizona Lost Boys Cente
Les mobilisations citoyennes d’arrachement de l’étang de Berre à l’industrialisation
Get PDFCet article aborde les mobilisations citoyennes pour la réhabilitation écologique de l’étang de Berre de 1988 à 1992. Il décrit ces mobilisations comme un travail d’arrachement de l’étang à sa vocation industrielle. Ce travail comprend trois dimensions : une reterritorialisation de l’étang, un basculement du paradigme économique, enfin une reconstruction des formes de militantisme.Tearing the Etang de Berre lagoon away from industrialization. Citizen mobilizations for making a territory up. This paper deals with the citizen mobilizations for the ecological restoration of the Etang de Berre lagoon from 1988 to 1992. The author describes these mobilizations as an attempt to tear the lagoon away from its industrial vocation. This tearing process has three dimensions: a reterritorialization of the lagoon, a shift of the economic paradigm, finally a reconstruction of forms of activism
The Labor Market and Poverty in Sudan
No full textUsing the most recent household survey
data, this paper examines the characteristics of Sudan’s
labor market as it relates to poverty outcomes. Several
important aspects of the labor market are analyzed,
including the relationship between labor market indicators
and the demographic structure of the population, geographic
location, education, and gender. It highlights the
significant differences in labor market outcomes depending
on the structure and distribution of the population and
Sudan’s labor market’s many challenges across different
dimensions, including demography, gender, and geography. The
four key messages can be summarized as follows: first, Sudan
is at the verge of entering the earl-dividend stage of the
demographic transition. Sudan’s population, while still very
young, is on track to enter into the early-dividend stage of
the demographic transition within just a few years, raising
the stakes for job creation and investment in human capita.
Second, while we find evidence for an increase in employment
and labor force participation at the national level, this
increase seems to be driven by seasonal labor in agriculture
and increasing economic hardship, respectively. In urban
areas, however, unemployment increased sharply, especially
among youth. And despite the overall increase in employment
and labor force participation, Sudan’s labor market still
underperforms in comparison to its peers. Third, Sudan’s
labor market is characterized by large gender disparities,
including in terms of employment opportunities and pay.
Finally, we find no signs of the beginnings of a structural
transformation over the time-period author study;
agriculture remains the mainstay of a large majority of
employed Sudanese. Rather, labor productivity and real wages
outside of agriculture declined markedly between 2009 and
2014, especially in sectors with links to the oil economy.
The paper offers policy insights to enhance the role of the
labor market in reducing poverty and boosting shared
prosperity in Sudan, key among which are 1) encouraging
private sector growth, 2) overcoming gender discrimination
in the labor market, 3) investing in agriculture and
re-storing price incentives, and 4) further expanding access
to quality education
Ventral-subgenual anterior cingulate cortex and self-transcendence
No full text© 2013 Tang and Tang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.Self-transcendence (ST) is one of specific human experiences often related to harmony with nature or feeling oneness with others or the self as an integral part of the whole universe. The Temperament and Character Inventory (TCI) is a widely used personality measure, and ST is one of personality dimensions (Cloninger, 1994; Cloninger et al., 1994). Previous studies showed that ST has significant positive correlation with the sgACC encompassing a ventromedial portion of the prefrontal cortex (vmPFC) using TCI and PET scan (Hakamata et al., 2013). Meanwhile, sgACC/vmPFC activity has been shown to be significantly decreased in patients with anxiety, major depression and mood disorders (Drevets et al., 2008; Shin and Liberzon, 2010; Kühn and Gallinat, 2013). Altogether, these findings suggest that sgACC/vmPFC play an important role in emotion regulation and ST (Hakamata et al., 2013)
Process length variation in cysts of a dinoflagellate, Lingulodinium machaerophorum, in surface sediments: Investigating its potential as salinity proxy
No full text“Many authors have contributed to writing this paper. Those listed in the metadata are: the main/contact author, the first listed author and Brunel University author(s). For a full list of the authors, please see the PDF version.”A biometrical analysis of the dinoflagellate cyst Lingulodinium machaerophorum (Deflandre and Cookson 1955) Wall, 1967 in 144 globally distributed surface sediment samples revealed that the average process length is related to summer salinity and temperature at a water depth of 30 m by the equation (salinity/temperature) = (0.078*average process length + 0.534) with R² = 0.69. This relationship can be used to reconstruct palaeosalinities, albeit with caution. The particular ecological window can be associated with known distributions of the corresponding motile stage Lingulodinium polyedrum (Stein) Dodge, 1989. Confocal laser microscopy showed that the average process length is positively related to the average distance between process bases (R²=0.78), and negatively related to the number of processes (R²=0.65). These results document the existence of two end members in cyst formation: one with many short, densely distributed processes and one with a few, long, widely spaced processes, which can be respectively related to low and high salinity/temperature ratios. Obstruction during formation of the cysts causes anomalous distributions of the processes. From a biological perspective, processes function to facilitate sinking of the cysts through clustering
Parcellaires antiques et histoire du paysage : le cas de la rive orientale de l'étang de Berre
No full textIn 1973-74 the R.A.N. published a systematic inventory of Roman centuriations in Provence. Mrs J. Soyer, author of the article, exposed that numerous remains of Roman cadastration could be detected in current boundaries. According to her, the surroundings of "Etang de Berre" (Bouches-du-Rhône) had kept features of at least four roman centuriations. Since then, a further study of these basic frame- works and settlements around the "Etang de Berre" has been undertaken by a team, in a pluridiciplinary research group context.
An analysis of current boundaries, based upon the cohesive agrarian units, and the relationship between different components of the landscape lead us to reconsider the identifications proposed by earlier studies. The current modern landscape seems to be more the result of a progressive and complex change than issued directly from Roman boundaries.La R.A.N. avait publié en 1973-74 un recensement systématique des centuriations de Provence. L'auteur de l'article, Jacqueline Soyer, proposait de voir, dans un grand nombre de cas, les restes de cadastres antiques dans le parcellaire actuel. Les plaines bordant l'Etang de Berre (Bouches-du-Rhône) auraient conservé des vestiges de quatre centuriations. L'étude de ces structures a été reprise dans le cadre d'un programme de recherche pluridisciplinaire sur l'occupation du sol autour de l'Etang.
Une analyse du parcellaire actuel basée sur l'étude des unités agraires et des relations entre les différents éléments constitutifs du paysage nous a conduit à remettre en cause les identifications proposées. Dans le secteur étudié le paysage moderne n'est pas issu de l'évolution de cadastrations antiques. Son élaboration est plus progressive et complexe.Royet Robert. Parcellaires antiques et histoire du paysage : le cas de la rive orientale de l'étang de Berre. In: Revue archéologique de Narbonnaise, tome 22, 1989. pp. 323-339
Natural and anthropogenic sources of copper to organic soils: a global, geochemical perspective
Get PDFCopper (Cu) is essential for all organisms but is commonly deficient in organic soils or found locally in excess. Natural and anthropogenic inputs of Cu were examined using 32 peat cores from bogs in Europe, North America, New Zealand, Greenland, and Antarctica. The natural abundance of Cu in ombrotrophic (rainwater-fed) peat was studied using (1) samples from pre-industrial periods (representing background values), (2) bromine (Br) concentrations and the background Cu/Br ratio, and (3) cores from remote locations. Etang de la Gruère in Switzerland provides a record of 15 000 yr of peat accumulation. The lowest Cu concentrations (1.0 ± 0.20 mg·kg−1) are found in 18 peat layers dating from ca. 6000 to 9000 cal yr BP, when atmospheric deposition of soil-derived dust was at a minimum. Similar background values occur in peat bogs from other regions. Recent peat layers from bogs in developed areas reveal much greater concentrations. Using the Cu/Br ratio, “excess” Cu in peat profiles can be calculated and attributed either to anthropogenic inputs in recent peats or natural inputs from mineral–water interactions in deeper layers. Peat cores from remote regions of northern Alberta show little or no evidence of anthropogenic Cu.The presentation of the authors' names and (or) special characters in the title of the pdf file of the accepted manuscript may differ slightly from what is displayed on the item page. The information in the pdf file of the accepted manuscript reflects the original submission by the author
Asymmetric author-topic model for knowledge discovering of big data in toxicogenomics
No full textThe advancement of high-throughput screening technologies facilitates the generation of massive amount of biological data, a big data phenomena in biomedical science. Yet, researchers still heavily rely on keyword search and/or literature review to navigate the databases and analyses are often done in rather small-scale. As a result, the rich information of a database has not been fully utilized, particularly for the information embedded in the interactive nature between data points that are largely ignored and buried. For the past ten years, probabilistic topic modeling has been recognized as an effective machine learning algorithm to annotate the hidden thematic structure of massive collection of documents. The analogy between text corpus and large-scale genomic data enables the application of text mining tools, like probabilistic topic models, to explore hidden patterns of genomic data and to the extension of altered biological functions. In this paper, we developed a generalized probabilistic topic model to analyze a toxicogenomics dataset that consists of a large number of gene expression data from the rat livers treated with drugs in multiple dose and time-points. We discovered the hidden patterns in gene expression associated with the effect of doses and time-points of treatment. Finally, we illustrated the ability of our model to identify the evidence of potential reduction of animal use
Digital gene expression analysis of male and female bud transition in Metasequoia reveals high activity of MADS-box transcription factors and hormone-mediated sugar pathways
No full textMetasequoiaglyptostroboidies is a famous redwood tree of ecological and economic importance, and requires more than 20 years of juvenile-to-adult transition before producing female and male cones. Previously, we induced reproductive buds using a hormone solution in juvenile Metasequoia trees as young as5-to-7years old. In the current study, hormone-treated shoots found in female and male buds were used to identify candidate genes involved in reproductive bud transition in Metasequoia. Samples from hormone-treated cone reproductive shoots and naturally occurring non-cone setting shoots were analyzed using 24 digital gene expression (DGE) tag profiles using Illumina, generating a total of 69,520 putative transcripts. Next, 32 differentially and specifically expressed transcripts were determined using quantitative real-time polymerase chain reaction, including the upregulation of MADS-box transcription factors involved in male bud transition and flowering time control proteins involved in female bud transition. These differentially expressed transcripts were associated with 243 KEGG pathways. Among the significantly changed pathways, sugar pathways were mediated by hormone signals during the vegetative-to-reproductive phase transition, including glycolysis/gluconeogenesis and sucrose and starch metabolism pathways. Key enzymes were identified in these pathways, including alcohol dehydrogenase (NAD) and glutathione dehydrogenase for the glycolysis/gluconeogenesis pathway, and glucanphosphorylase for sucrose and starch metabolism pathways. Our results increase our understanding of the reproductive bud transition in gymnosperms. In addition, these studies on hormone-mediated sugar pathways increase our understanding of the relationship between sugar and hormone signaling during female and male bud initiation in Metasequoia
