13,220 research outputs found
Fathering to meet the needs of children (2007)
"Information from Human Environmental Sciences Extension.""Human relations.""This publication was originally written by Denise E. Taylor and Janet A. Clark, Human Development and Family Studies Extension, University of Missouri-Columbia. Kim Leon, state specialist in Human Development and Family Studies, reviewed and revised this edition."New 4/00; Revised 4/07/Web
Using the Man9(GlcNAc)2 â DC-SIGN pairing to probe specificity in photochemical immobilization
We demonstrate the expected preference of an immobilised oligosaccharide Man(9)(GlcNAc)(2) upon a 96-well photochemical array, for its known receptor, the cell-surface lectin Dendritic Cell-Specific ICAM3 Grabbing Nonintegrin (DC-SIGN) when compared to immobilised competing monosaccharides
Conservative Estimation of Inertial Sensor Errors Using Allan Variance Data
To understand the error sources present in inertial sensors, both the white (time-invariant) and correlated noise sources must be properly characterized. To understand both sources, the standard approach (IEEE standards 647-2006, 952-2020) is to compute the Allan variance of the noise and then use human-based interpretation of linear trends to estimate the separate noise sources present in a sensor. Recent work has sought to overcome the graphical nature and visual-inspection basis of this approach leading to more accurate noise estimates. However, when using noise characterization in a filter, it is important that the noise estimates be not only accurate but also conservative, i.e., that the estimated noise parameters overbound truth. In this paper, we propose a novel method for automatically estimating conservative noise parameters using the Allan variance. Results of using this method to characterize a low-cost MEMS IMU (Analog Devices ADIS16470) are presented, demonstrating the efficacy of the proposed approach
Collecting Race, Ethnicity, and Language Data to Identify and Reduce Health Disparities: Perceptions of Health Plan Enrollees
Abstract available at publisher's website
An exploration of community and culture related fire injury risks
There can be different types and different levels of fire injury risks relating to different communities and cultures. In this paper we examine the fire injury risks associated with different communities and cultures in the Greater Manchester area within the UK over the period 2010 to 2015. Typically ethnicity data is only recorded for fire injuries rather than fire incidents. In particular, the research reported in this paper examines the fire injury risks relating to age, cooking practices, candle and incense use, alcohol consumption rates, and smoking rates across different communities and cultures. Overall there appeared to be significant differences between the injury risk of alcohol related fires, smoking related fires, and kitchen fires between the different community and cultural groups within the area studied over the given time period. In addition fire injury risk appears significantly higher for elderly individuals in the White British and White Irish community groups
Prograde and retrograde growth of monazite in migmatites: An example from the Nagercoil Block, southern India
Data from a migmatised metapelite raft enclosed within charnockite provide quantitative constraints on the pressureâtemperatureâtime (PâTât) evolution of the Nagercoil Block at the southernmost tip of peninsular India. An inferred peak metamorphic assemblage of garnet, K-feldspar, sillimanite, plagioclase, magnetite, ilmenite, spinel and melt is consistent with peak metamorphic pressures of 6â8 kbar and temperatures in excess of 900 °C. Subsequent growth of cordierite and biotite record high-temperature retrograde decompression to around 5 kbar and 800 °C. SHRIMP UâPb dating of magmatic zircon cores suggests that the sedimentary protoliths were in part derived from felsic igneous rocks with Palaeoproterozoic crystallisation ages. New growth of metamorphic zircon on the rims of detrital grains constrains the onset of melt crystallisation, and the minimum age of the metamorphic peak, to around 560 Ma. The data suggest two stages of monazite growth. The first generation of REE-enriched monazite grew during partial melting along the prograde path at around 570 Ma via the incongruent breakdown of apatite. Relatively REE-depleted rims, which have a pronounced negative europium anomaly, grew during melt crystallisation along the retrograde path at around 535 Ma. Our data show the rocks remained at suprasolidus temperatures for at least 35 million years and probably much longer, supporting a long-lived high-grade metamorphic history. The metamorphic conditions, timing and duration of the implied clockwise PâTât path are similar to that previously established for other regions in peninsular India during the Ediacaran to Cambrian assembly of that part of the Gondwanan supercontinent
The VLT-FLAMES Tarantula Survey XXIII. Two massive double-lined binaries in 30 Doradus
Aims. We investigate the characteristics of two newly discovered short-period, double-lined, massive binary systems in the Large
Magellanic Cloud, VFTS 450 (O9.7 IIâIb + O7::) and VFTS 652 (B1 Ib + O9: III:).
Methods. We perform model-atmosphere analyses to characterise the photospheric properties of both members of each binary (denoting the âprimaryâ as the spectroscopically more conspicuous component). Radial velocities and optical photometry are used to estimate the binary-system parameters.
Results. We estimate Teff = 27 kK, log g = 2.9 (cgs) for the VFTS 450 primary spectrum (34 kK, 3.6: for the secondary spectrum); and Teff = 22 kK, log g = 2.8 for the VFTS 652 primary spectrum (35 kK, 3.7: for the secondary spectrum). Both primaries show surface nitrogen enrichments (of more than 1 dex for VFTS 652), and probable moderate oxygen depletions relative to reference LMC abundances. We determine orbital periods of 6.89 d and 8.59 d for VFTS 450 and VFTS 652, respectively, and argue that the primaries must be close to filling their Roche lobes. Supposing this to be the case, we estimate component masses in the range âŒ20â50 Mâ.
Conclusions. The secondary spectra are associated with the more massive components, suggesting that both systems are high-mass analogues of classical Algol systems, undergoing case-A mass transfer. Difficulties in reconciling the spectroscopic analyses with the light-curves and with evolutionary considerations suggest that the secondary spectra are contaminated by (or arise in) accretion disks
The VLT-FLAMES Tarantula Survey V. The peculiar B[e]-like supergiant, VFTS698, in 30 Doradus
We present an analysis of a peculiar supergiant B-type star (VFTS698/Melnick
2/Parker 1797) in the 30 Doradus region of the Large Magellanic Cloud which
exhibits characteristics similar to the broad class of B[e] stars. We analyse
optical spectra from the VLT-FLAMES survey, together with archival optical and
infrared photometry and X-ray imaging to characterise the system. We find
radial velocity variations of around 400 km/s in the high excitation Si IV, N
III and He II spectra, and photometric variability of ~0.6 mag with a period of
12.7 days. In addition, we detect long-term photometric variations of ~0.25
mag, which may be due to a longer-term variability with a period of ~400 days.
We conclude that VFTS698 is likely an interacting binary comprising an early
B-type star secondary orbiting a veiled, more massive companion. Spectral
evidence suggests a mid-to-late B-type primary, but this may originate from an
optically-thick accretion disc directly surrounding the primary.Comment: 18 pages, 14 figures and 8 tables. Table 8 to be published onlin
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