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Manisha Ray, Sarah E Waller, Caroline Chick Jarrold
A systematic comparison of MxOy(-) + ROH (M = Mo vs W; R = Me vs Et) reaction rate coefficients and product distributions combined with results of calculations on weakly bound MxOy(-)·ROH complexes suggest that the overall reaction mechanism has three distinct steps, consistent with recently reported results on analogous MxOy(-) + H2O reactivity studies. MxOy(-) + ROH → MxOy+1(-) + RH oxidation reactions are observed for the least oxidized clusters, and MxOy(-) + ROH → MxOyROH(-) addition reactions are observed for clusters in intermediate oxidation states, as observed previously in MxOy(-) + H2O reactions...
March 10, 2016: Journal of Physical Chemistry. A
Ephraim S Grossman, Yaakov S G Hoffman, Itai Berger, Ari Z Zivotofsky
OBJECTIVE: Adults diagnosed with attentional deficit disorder (ADHD) are easily distracted in many tasks. Yet ADHD performance on inattentional blindness (IB) tasks has not been examined. Such investigation may aid in discriminating between 3 ADHD models: the neurological model, the perceptual load theory, and the "hunter versus farmer" hypothesis. METHOD: Distractibility was assessed in ADHD and non-ADHD college students using the MOXO task that involves detection of a single attended stimulus that repeatedly appears in the same place and in the well-known IB "gorilla" video which involves tracking of a stimulus moving at a fast pace in a dynamic, complex manner...
November 2015: Neuropsychology
Itai Berger, Ortal Slobodin, Merav Aboud, Julia Melamed, Hanoch Cassuto
While data from behavioral, neuropsychological, and brain studies suggested that Attention-Deficit/Hyperactivity Disorder (ADHD) is related to a developmental lag that reduces with age, other studies have proposed that ADHD represents a deviant brain function. The present study used a cross-sectional approach to examine whether ADHD children show a developmental delay in cognitive performance measured by continuous performance test (CPT). We thus, compared six age groups of ADHD children (N = 559) and their unaffected peers (N = 365), aged 6-11, in four parameters of MOXO-CPT performance: Attention, Timing, Hyperactivity and Impulsivity...
2013: Frontiers in Human Neuroscience
Itai Berger, Hanoch Cassuto
BACKGROUND: Diagnosis of ADHD in adolescents involves specific challenges. Conventional CPT's may fail to consistently distinguish ADHD from non-ADHD due to insufficient cognitive demands. The aim of this study was to explore whether the incorporation of environmental distractors into a CPT would increase its ability to distinguish ADHD from non-ADHD adolescents. NEW METHOD: Using the rate of omission errors as a measure of difficulty in sustained attention, this study examined whether ADHD adolescents are more distracted than controls and which type of distractors is more effective in terms of ADHD diagnosis...
January 30, 2014: Journal of Neuroscience Methods
Umberto Lombardo, Katherine Szabo, José M Capriles, Jan-Hendrik May, Wulf Amelung, Rainer Hutterer, Eva Lehndorff, Anna Plotzki, Heinz Veit
We report on previously unknown early archaeological sites in the Bolivian lowlands, demonstrating for the first time early and middle Holocene human presence in western Amazonia. Multidisciplinary research in forest islands situated in seasonally-inundated savannahs has revealed stratified shell middens produced by human foragers as early as 10,000 years ago, making them the oldest archaeological sites in the region. The absence of stone resources and partial burial by recent alluvial sediments has meant that these kinds of deposits have, until now, remained unidentified...
2013: PloS One
Lisa C Davenport, Inés Nole Bazán, Nancy Carlos Erazo
We report on the intra-Amazonian migration of a pair of Orinoco Geese (Neochen jubata) from Manú National Park, Peru. The species is Critically Endangered in Peru, so a major aim of the study was to aid conservation planning by learning the wet season location of the country's last known breeding population. We captured a breeding pair on October 27, 2010, and fitted the birds with Microwave Telemetry, Inc. GPS/Argos satellite PTT's. The pair migrated ∼655 km from Manú National Park to the Llanos de Moxos, Bolivia (Dept...
2012: PloS One
Alfons Corella, Francesc Bert, Alejandro Pérez-Pérez, Manel Gené, Daniel Turbón
This report presents allele frequency and absolute genotype data of the short tandem repeat (STR) loci HUMTH01, HUMVWA31A, HUMCSF1PO and HUMTPOX for three autochthonous Amerindian populations living in the Beni Department of Bolivia. These related groups are the Quechua, Aymara and Beni populations all living in specific although sometimes overlapping areas that extend from the Andean habitat to the lowland Llanos de Moxos savannah passing through the Piedmont hills. The usefulness of these loci for paternity and identification testing was also examined...
September 2008: Annals of Human Biology
Alfons Corella, Francesc Bert, Alejandro Pérez-Pérez, Manel Gené, Daniel Turbón
BACKGROUND: Chimane, Moseten Aymara and Quechua are Amerindian populations living in the Bolivian Piedmont, a characteristic ecoregion between the eastern slope of the Andean mountains and the Amazonian Llanos de Moxos. In both neighbouring areas, dense and complex societies have developed over the centuries. The Piedmont area is especially interesting from a human peopling perspective since there is no clear evidence regarding the genetic influence and peculiarities of these populations...
January 2007: Annals of Human Biology
Francis E Mayle, Robert P Langstroth, Rosie A Fisher, Patrick Meir
The aim of this paper is to evaluate the respective roles of past changes in climate, geomorphology and human activities in shaping the present-day forest-savannah mosaic of the Bolivian Amazon, and consider how this palaeoecological perspective may help inform conservation strategies for the future. To this end, we review a suite of palaeoecological and archaeological data from two distinct forest-savannah environments in lowland Bolivia: Noel Kempff Mercado National Park (NKMNP) on the Precambrian Shield and the 'Llanos de Moxos' in the Beni basin...
February 28, 2007: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
No abstract text is available yet for this article.
October 15, 1949: Revista Clínica Española
No abstract text is available yet for this article.
November 1951: Archives des Maladies de L'appareil Digestif et des Maladies de la Nutrition
No abstract text is available yet for this article.
September 1951: Revista Española de las Enfermedades del Aparato Digestivo y de la Nutrición
F Bert, A Corella, M Gené, A Pérez-Pérez, D Turbón
BACKGROUND: Movima, Yuracare, Ignaciano and Trinitario are Amerindian populations living in the Bolivian lowlands of the Amazonian basin. The cultural and genetic affinity of the peoples living in this area is poorly known, despite many archaeological studies demonstrating its importance in pre-Columbian times. Densely populated Amerindian groups occupied the region, both in the Llanos and along the river streams of the Amazonian basin, practising intense agricultural activities and exchange of goods...
January 2004: Annals of Human Biology
C de Casso Moxo, N J Lewis, F Rapado
Lymphangiomas are uncommon congenital lesions of the lymphatic system which usually present in childhood. We report a case of adult lymphangioma, localised in the neck, and discuss the presentation, diagnosis and management of this tumour.
June 2001: International Journal of Clinical Practice
I Hore, R B Mitchell, G Radcliffe, C De Casso Moxo
We report a case of Pott's puffy tumour in a 12-year-old. Owing to the late development of the frontal sinuses, frontal sinus infection in children is rare. When present it can lead to osteomyelitis associated with forehead swelling. Early diagnosis and active treatment prevent progression to life-threatening intracranial spread.
May 2000: International Journal of Clinical Practice
C J Morris, F Biville, E Turlin, E Lee, K Ellermann, W H Fan, R Ramamoorthi, A L Springer, M E Lidstrom
Aerobic gram-negative methylotrophs oxidize methanol to formaldehyde by using a methanol dehydrogenase that has pyrroloquinoline quinone (PQQ) as a prosthetic group. Seventy-two mutants which are unable to grow on methanol unless the growth medium is supplemented with PQQ have been isolated in the facultative methanol utilizer Methylobacterium extorquens AM1. In addition, 12 previously isolated methanol oxidation mutants of M. extorquens AM1 were shown to be able to grow on methanol in the presence of PQQ. These putative PQQ biosynthesis mutants have been complemented by using previously isolated clones containing M...
March 1994: Journal of Bacteriology
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