616 research outputs found
Psychiatric, neuropediatric, and neuropsychological symptoms in a case of hypomelanosis of Ito
This case report presents a thirteen year-old boy who was diagnosed as having Hypomelanosis of Ito. The developmental history includes severe failure to thrive, and moderate atypical autism as well as diverse clinical and neuropsychological symptoms are present. The pattern of neuropsychological functioning, which can be partially related to the neurophysiological findings, is discussed within the context of existing neuropsychological theories about autistic disorder
Quasi-analytical formulation for calculation of infiltration and runoff
Prepared for USDA Forest Service, Rocky Mountain Forest and Range Experiment Station.CER81-82-86.December 1981.Bibliography: pages 41-42
Study of the morphology of semicrystalline poly(ethylene terephthalate) by hydrolysis etching
Semicrystalline poly(ethylene terephthalate) was hydrolysed in water at 180°C under elevated pressure and subsequently treated with ethanol, following the etching process first developed by Miyagi and Wunderlich.
The weight loss, the wide-angle X-ray scattering and the molecular weight were measured as a function of etching time. It was found that even at the end of the etching process not all the amorphous material could be removed by the hydrolysis treatment. By comparing the obtained results with those derived from an elaborate small-angle X-ray scattering study and with wide-angle X-ray scattering measurements, it was concluded that only those amorphous regions lying outside of the lamellar stacks were removed. Subsequently, the lamellar stacks themselves were attacked. It was also found that at the very beginning of
the hydrolysis process additional crystals were formed in the material.Peer reviewe
A weekly, continually updated dataset of the probability of large wildfires across western US forests and woodlands
There is broad consensus that wildfire activity is likely
to increase in western US forests and woodlands over the next century.
Therefore, spatial predictions of the potential for large wildfires have
immediate and growing relevance to near- and long-term research, planning,
and management objectives. Fuels, climate, weather, and the landscape all
exert controls on wildfire occurrence and spread, but the dynamics of these
controls vary from daily to decadal timescales. Accurate spatial predictions
of large wildfires should therefore strive to integrate across these
variables and timescales. Here, we describe a high spatial resolution dataset
(250 m pixel) of the probability of large wildfires ( > 405 ha) across
forests and woodlands in the contiguous western US, from 2005 to the present.
The dataset is automatically updated on a weekly basis using Google Earth
Engine and a continuous integration pipeline. Each image in the dataset
is the output of a random forest machine-learning algorithm, trained on
random samples of historic small and large wildfires and
represents the predicted
conditional probability of an individual pixel burning in a large fire, given
an ignition or fire spread to that pixel. This novel workflow is able to integrate the near-term dynamics
of fuels and weather into weekly predictions while also integrating
longer-term dynamics of fuels, the climate, and the landscape. As a
continually updated product, the dataset can provide operational fire
managers with contemporary, on-the-ground information to closely monitor the
changing potential for large wildfire occurrence and spread. It can also
serve as a foundational dataset for longer-term planning and research, such
as the strategic targeting of fuels management, fire-smart development at the
wildland–urban interface, and the analysis of trends in wildfire potential
over time. Weekly large fire probability GeoTiff products from 2005 to 2017
are archived on the Figshare online digital repository with the DOI
https://doi.org/10.6084/m9.figshare.5765967 (available at
https://doi.org/10.6084/m9.figshare.5765967.v1). Weekly GeoTiff products and the entire
dataset from 2005 onwards are also continually uploaded to a Google Cloud
Storage bucket at
https://console.cloud.google.com/storage/wffr-preds/V1 (last access:
14 September 2018) and are available free of charge with a Google account.
Continually updated products and the long-term archive are also available to
registered Google Earth Engine (GEE) users as public GEE assets and can be
accessed with the image collection ID users/mgray/wffr-preds within GEE.</p
Treatment with human growth hormone in patients with Prader-Labhart-Willi syndrome reduces body fat and increases muscle mass and physical performance
Twelve children with documented Prader-Labhart-Willi syndrome were treated with human growth hormone (24 U/m2/week) during 1 year. The children were divided into three groups: group 1: overweight and prepubertal (n = 6, age 3.8-7.0 years); group 2: underweight and prepubertal (n = 3, age 0.6-4.1 years); group 3: pubertal (n = 3, age 9.2-14.6 years). In group 1, height increased from -1.7 SD to -0.6 SD, while weight decreased from 1.1 SD to 0.4 SD, with a dramatic drop in weight for height from 3.8 SD to 1.2 SD. Hand length increased from -1.5 SD to -0.4 SD and foot length from -2.5 SD to -1.4 SD. Body fat, measured by dual X-ray energy absorptiometry, dropped by a third, whereas muscle mass increased by a fourth. Physical capability (Wingate test) improved considerably. The children were reported to be much more active and capable. In group 2, similar changes were seen, but weight for height increased, probably because muscle mass increase exceeded fat mass decrease. Changes in group 3 were similar as in group 1, even though far less distinct. Conclusion: Growth hormone treatment in Prader-Labhart-Willi syndrome led to dramatic changes: distinct increase in growth velocity, height and muscle mass, as well as an improvement in physical performance. Fat mass and weight for height decreased in the initially overweight children, and weight for height increased in underweight childre
Preliminary comparison of magmatic manifestations, calc-alkaline affinity and stephanian-permian age, in the Iberian Chain
[Resumen] En este trabajo se estudian, de forma sintética y actualizada, las manifestaciones (hipovolcánicas y volcanoclásticas) calco-alcalinas que, con carácter epizonal, pluriepisódico
y edad Stephaniense-PĂ©rmico, afloran en la Cadena IbĂ©rica. El estudio del magmatismo en la cuenca de Sauquillo de Alcázar (Soria) permite identificar la geometrĂa y la modalidad de este magmatismo con mayor precisi6n, respecto a lo obtenido en los cuatro afloramientos volcano-clásticos seleccionados. Los resultados obtenidos facilitan realizar consideraciones sobre el estudio espacio-temporal de este magmatismo..[Abstract] A synthetic and actualized study of several magmatic calc-alkaline manifestations
of Stephanian-Permian age, of the Iberian Chain, is proposed in this papero The Sauquillo de Alcázar (Soria) outcrop allows a more complete study (with drilling logs and a surface profile) giving improved spacetime information on the geometry and evolution of this magmatism. Four pyroclastic outcrops are integrated in this compariso
New first trimester crown-rump length's equations optimized by structured data collection from a French general population
--- Objectives --- Prior to foetal karyotyping, the likelihood of Down's
syndrome is often determined combining maternal age, serum free beta-HCG,
PAPP-A levels and embryonic measurements of crown-rump length and nuchal
translucency for gestational ages between 11 and 13 weeks. It appeared
important to get a precise knowledge of these scan parameters' normal values
during the first trimester. This paper focused on crown-rump length. ---
METHODS --- 402 pregnancies from in-vitro fertilization allowing a precise
estimation of foetal ages (FA) were used to determine the best model that
describes crown-rump length (CRL) as a function of FA. Scan measures by a
single operator from 3846 spontaneous pregnancies representative of the general
population from Northern France were used to build a mathematical model linking
FA and CRL in a context as close as possible to normal scan screening used in
Down's syndrome likelihood determination. We modeled both CRL as a function of
FA and FA as a function of CRL. For this, we used a clear methodology and
performed regressions with heteroskedastic corrections and robust regressions.
The results were compared by cross-validation to retain the equations with the
best predictive power. We also studied the errors between observed and
predicted values. --- Results --- Data from 513 spontaneous pregnancies allowed
to model CRL as a function of age of foetal age. The best model was a
polynomial of degree 2. Datation with our equation that models spontaneous
pregnancies from a general population was in quite agreement with objective
datations obtained from 402 IVF pregnancies and thus support the validity of
our model. The most precise measure of CRL was when the SD was minimal
(1.83mm), for a CRL of 23.6 mm where our model predicted a 49.4 days of foetal
age. Our study allowed to model the SD from 30 to 90 days of foetal age and
offers the opportunity of using Zscores in the future to detect growth
abnormalities. --- Conclusion --- With powerful statistical tools we report a
good modeling of the first trimester embryonic growth in the general population
allowing a better knowledge of the date of fertilization useful in the
ultrasound screening of Down's syndrome. The optimal period to measure CRL and
predict foetal age was 49.4 days (9 weeks of gestational age). Our results open
the way to the detection of foetal growth abnormalities using CRL Zscores
throughout the first trimester
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Equilibrium Hydrogen Concentrations of the 800 Series Tanks in Deactivation Mode
Ein neues, unkompliziertes Verfahren zur Bestimmung der Zusammensetzung binärer Flüssigkeitsgemische
Ein neues Verfahren zur Bestimmung der Zusammensetzung binärer Flüssigkeitsgemische mit Hilfe solvatochromer Farbstoffe wird beschrieben. Die Analyse erfolgt durch einfache UV/VIS-Absorptionsmessung und ist unter Verwendung einer Zwei-Parameter-Gleichung ein exakter Schnelltest
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