1,941 research outputs found
Device for mechanically stabilizing web ribbon buttons during growth initiation
The invention relates to a stabilization device for stabilizing dendritic web seed buttons during initiation of crystal growth from a float melt zone. The invention includes angular maintenance means for maintaining a constant angular orientation between the axis of a growth initiation seed and the upper surface of a web button during withdrawal of the web button from the melt. In the preferred embodiment, the angular means includes an adjustable elevation tube which surrounds the seed, the weight of which may be selectively supported by the seed button during web button withdrawal
Scriber for silicon wafers
A device for dividing silicon wafers into rectangular chips is characterized by a base including a horizontally oriented bed with a planar support surface, a vacuum chuck adapted to capture a silicon wafer seated on the support for translation in mutually perpendicular directions. A stylus support mounted on the bed includes a shaft disposed above and extended across the bed and a truck mounted on the shaft and supported thereby for linear translation along a path extended across the bed a vertically oriented scribe has a diamond tip supported by the truck also adapted as to engage a silicon wafer captured by the chuck and positioned beneath it in order to form score lines in the surface of the wafer as linear translation is imparted to the truck. A chuck positioning means is mounted on the base and is connected to the chuck for positioning the chuck relative to the stylus
Theory of mind, empathy and emotion perception in cortical and subcortical neurodegenerative diseases
Although the impact of neurodegenerative diseases on everyday interactions is well known in the literature, their impact on social cognitive processes remains unclear. The concept of social cognition refers to a set of skills, all of which are essential for living in a community. It involves social knowledge, perception and processing of social cues, and representation of mental states. This report is a review of recent findings on the impact of cortical and subcortical neurodegenerative diseases on three social cognitive processes, namely, the theory of mind, empathy and processing emotions. The focus here is on a conceptual approach to each of these skills and their cerebral underpinnings
Social cognition in normal and pathological aging
The concept of social cognition refers to a set of skills and to emotional and social experiences regulating relationships between individuals. This concept is appropriate in order to help us to explain individual human behaviours and behaviours in groups. Social cognition involves social knowledge, perception and processing of social cues, and the representation of mental states. The concept of social cognition thus refers to a multitude of skills. This paper stops on several of them, namely theory of mind, empathy, moral reasoning, emotional processing and emotional regulation. We propose a conceptual approach to each of these skills also stopping on their cerebral underpinnings. We also make an inventory of knowledge about the effects of age and neurodegenerative diseases on social cognition
Impact of Groundwater Flow on Permafrost Degradation and Transportation Infrastructure Stability
INE/AUTC 13.0
Early multifocal stenosis after coronary artery snaring during off-pump coronary artery bypass in a patient with diabetes
AbstractJ Thorac Cardiovasc Surg 2001;122:1044-
Monitoring and analyzing exoplanetary transits from Argentina
Photometric observations of transits can be used to derive physical and orbital parameters of the system, like the planetary and stellar radius, orbital inclination and mean density of the star. Furthermore, monitoring possible periodic variations in transit timing of planets is important, since small changes can be caused by the presence of other planets or moons in the system. On the other hand, long term changes in the transit length can be due to the orbital precession of the planets. For these reasons we started an observational program dedicated to observe transits of known exoplanets with the aim of contributing to a better understanding of these planetary systems. In this work we present our first results obtained using the observational facilities in Argentina including the 2.15 telescope at CASLE
Observation and absolute frequency measurements of the 1S0 - 3P0 optical clock transition in ytterbium
We report the direct excitation of the highly forbidden (6s^2) 1S0 - (6s6p)
3P0 optical transition in two odd isotopes of ytterbium. As the excitation
laser frequency is scanned, absorption is detected by monitoring the depletion
from an atomic cloud at ~70 uK in a magneto-optical trap. The measured
frequency in 171Yb (F=1/2) is 518,295,836,593.2 +/- 4.4 kHz. The measured
frequency in 173Yb (F=5/2) is 518,294,576,850.0 +/- 4.4 kHz. Measurements are
made with a femtosecond-laser frequency comb calibrated by the NIST cesium
fountain clock and represent nearly a million-fold reduction in uncertainty.
The natural linewidth of these J=0 to J=0 transitions is calculated to be ~10
mHz, making them well-suited to support a new generation of optical atomic
clocks based on confinement in an optical lattice.Comment: 4 pages, 3 figure
Benefits of Urologic-Dermatologic Consultations for the Diagnosis of Cutaneous Penile Lesions: A Prospective Study
INTRODUCTION: We evaluated the benefits of a specialized consultation created in 2014 for cutaneous penile lesions.
MATERIALS AND METHODS: We performed a descriptive prospective study evaluating all patients sent for a monthly urologic-dermatologic consultation at a French university hospital from September 2014 to September 2015 for cutaneous penile lesions. All patients evaluated were included. We collected the demographic data, clinical examination findings, and the proposed diagnosis and treatment for every patient.
RESULTS: A total of 27 patients were included; 4 (14.8%) had been referred by a general physician and 23 (85.2%) by a specialist. Cutaneous penile lesions had evolved within 12 months in 15 patients (55.6%). Penile cancer was diagnosed in 5 patients (18.5%), of which 3 were squamous cell carcinoma (11.1%), 1 was metastasis of melanoma (3.7%), and 1 was extramammary Paget disease (3.7%). In addition, 1 patient (3.7%) had a premalignant lesion on a condyloma, 12 (44.4%) had balanitis, 2 (7.4%) had psoriasis lesions, 3 (11.1%) had condylomas, 1 (3.7%) had genital melanosis, and 3 (11.2%) had normal findings. Four patients (16.6%) underwent biopsy, 8 (33.3%) underwent surgery, and 12 (50%) received local treatment.
CONCLUSION: The use of urologic-dermatology specialized consultations resulted in encouraging findings. Patients can benefit from multidisciplinary expertise and rapid treatment of various disorders. Thus, it seems important to develop reference centers created specifically for cancerous disease
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