290 research outputs found
Someone\u27s Missing...and I Think It\u27s Me: Our Great Adventure with Dementia
Someone’s Missing…and I Think It’s Me is a unique blend of memoir, advice, and art. Gaustad chronicles her experiences with her late husband, prominent artist and VCU faculty member Gerald Donato, as they try to navigate the mysteries and terrors of early-onset dementia. Beautifully illustrated with original artwork by the author, Donato, and artist friends, Gaustad takes a brutally honest, sometimes harrowing, and ultimately life-affirming look at their challenged marriage. Although her original intent was to create a guide for those dealing with brain illness in loved ones, the book became a testament to the beauty and humor to be found above and beyond the medical travails; Someone’s Missing is a moving love story.
Not Missing: Transcriptions is a supplemental file containing transcriptions of the handwritten notes and journal entries contained in the book. For the print edition, this separate zine will be included in a pocket in the cover. It is also available as a separate record.
The print version of this book is now available from Chop Suey Books and from Amazon.https://scholarscompass.vcu.edu/someones_missing/1000/thumbnail.jp
Spectroscopic and redox properties of amine-unctionalized K_2[Os-^(II)(bpy)(CN)_4] complexes
We report the first examples of amine-functionalized K_2[Os^(II)(bpy)(CN)_4] (bpy = 2,2'-bipyridine) complexes. The tetracyanoosmate complexes were prepared by UV irradiation (λ = 254 nm) of K_4[Os^(II)(CN)_6] and primary amine-functionalized bpy ligands in acidic aqueous media. The aqueous solution pH dependences of the spectroscopic and redox properties of 4,4'- and 5,5'-substituted complexes have been investigated. The pendant amine functional groups and coordinated cyanide ligands are basic sites that can be sequentially protonated, thereby allowing systematic tuning of electrochemical and optical spectroscopic properties
Not Missing: Transcriptions
Not Missing: Transcriptions contains transcriptions of handwritten notes and journal entries from the book Someone\u27s Missing...and I Think It\u27s Me: Our Great Adventure with Dementia, by J.L. Gaustad. It is meant to accompany that book, with page numbers keyed to the pages in the book. For the print edition, this separate zine will be included in a pocket in the cover.https://scholarscompass.vcu.edu/someones_missing/1001/thumbnail.jp
Towards a Continuous Record of the Sky
It is currently feasible to start a continuous digital record of the entire
sky sensitive to any visual magnitude brighter than 15 each night. Such a
record could be created with a modest array of small telescopes, which
collectively generate no more than a few Gigabytes of data daily.
Alternatively, a few small telescopes could continually re-point to scan and
reco rd the entire sky down to any visual magnitude brighter than 15 with a
recurrence epoch of at most a few weeks, again always generating less than one
Gigabyte of data each night. These estimates derive from CCD ability and
budgets typical of university research projects. As a prototype, we have
developed and are utilizing an inexpensive single-telescope system that obtains
optical data from about 1500 square degrees. We discuss the general case of
creating and storing data from a both an epochal survey, where a small number
of telescopes continually scan the sky, and a continuous survey, composed of a
constellation of telescopes dedicated each continually inspect a designated
section of the sky. We compute specific limitations of canonical surveys in
visible light, and estimate that all-sky continuous visual light surveys could
be sensitive to magnitude 20 in a single night by about 2010. Possible
scientific returns of continuous and epochal sky surveys include continued
monitoring of most known variable stars, establishing case histories for
variables of future interest, uncovering new forms of stellar variability,
discovering the brightest cases of microlensing, discovering new novae and
supernovae, discovering new counterparts to gamma-ray bursts, monitoring known
Solar System objects, discovering new Solar System objects, and discovering
objects that might strike the Earth.Comment: 38 pages, 9 postscript figures, 2 gif images. Revised and new section
added. Accepted to PASP. Source code submitted to ASCL.ne
Diffraction-limited near-IR imaging at Keck reveals asymmetric, time-variable nebula around carbon star CIT 6
We present multi-epoch, diffraction-limited images of the nebula around the
carbon star CIT 6 at 2.2 microns and 3.1 microns from aperture masking on the
Keck-I telescope. The near-IR nebula is resolved into two main components, an
elongated, bright feature showing time-variable asymmetry and a fainter
component about 60 milliarcseconds away with a cooler color temperature. These
images were precisely registered (~35 milliarcseconds) with respect to recent
visible images from the Hubble Space Telescope (Trammell et al. 2000), which
showed a bipolar structure in scattered light. The dominant near-IR feature is
associated with the northern lobe of this scattering nebula, and the
multi-wavelength dataset can be understood in terms of a bipolar dust shell
around CIT 6. Variability of the near-IR morphology is qualitatively consistent
with previously observed changes in red polarization, caused by varying
illumination geometry due to non-uniform dust production. The blue emission
morphology and polarization properties can not be explained by the above model
alone, but require the presence of a wide binary companion in the vicinity of
the southern polar lobe. The physical mechanisms responsible for the breaking
of spherical symmetry around extreme carbon stars, such as CIT 6 and IRC+10216,
remain uncertain.Comment: 18 pages, 5 figures (one in color), to appear in the Astrophysical
Journa
In Vivo Fluorescence-Based Endoscopic Detection of Colon Dysplasia in the Mouse Using a Novel Peptide Probe
Colorectal cancer (CRC) is a major cause of cancer-related deaths in much of the
world. Most CRCs arise from pre-malignant (dysplastic) lesions, such as
adenomatous polyps, and current endoscopic screening approaches with white light
do not detect all dysplastic lesions. Thus, new strategies to identify such
lesions, including non-polypoid lesions, are needed. We aim to identify and
validate novel peptides that specifically target dysplastic colonic epithelium
in vivo. We used phage display to identify a novel peptide
that binds to dysplastic colonic mucosa in vivo in a
genetically engineered mouse model of colo-rectal tumorigenesis, based on
somatic Apc (adenomatous polyposis coli) gene
inactivation. Binding was confirmed using confocal microscopy on biopsied
adenomas and excised adenomas incubated with peptide ex vivo.
Studies of mice where a mutant Kras allele was somatically
activated in the colon to generate hyperplastic epithelium were also performed
for comparison. Several rounds of in vivo T7 library biopanning
isolated a peptide, QPIHPNNM.
The fluorescent-labeled peptide bound to dysplastic lesions on endoscopic
analysis. Quantitative assessment revealed the fluorescent-labeled peptide
(target/background: 2.17±0.61) binds ∼2-fold greater to the colonic
adenomas when compared to the control peptide (target/background:
1.14±0.15), p<0.01. The peptide did not bind to the non-dysplastic
(hyperplastic) epithelium of the Kras mice. This work is first
to image fluorescence-labeled peptide binding in vivo that is
specific towards colonic dysplasia on wide-area surveillance. This finding
highlights an innovative strategy for targeted detection to localize
pre-malignant lesions that can be generalized to the epithelium of hollow
organs
An architecture for consolidating multidimensional time-series data onto a common coordinate grid
Radio observations of the planetary nebula around the OH/IR Star OH354.88-0.54 (V1018 Sco)
We present radio observations of the unique, recently formed, planetary
nebula (PN) associated with a very long-period OH/IR variable star V1018 Sco
that is unequivocally still in its asymptoticgiant branch phase. Two regions
within the optical nebula are clearly detected in nonthermal radio continuum
emission, with radio spectral indices comparable to those seen in
colliding-wind Wolf-Rayet binaries. We suggest that these represent shocked
interactions between the hot, fast stellar wind and the cold nebular shell that
represents the PN's slow wind moving away from the central star. This same
interface produces both synchrotron radio continuum and the optical PN
emission. The fast wind is neither spherical in geometry nor aligned withany
obvious optical or radio axis. We also report the detection of transient H2O
maser emission in this nebula.Comment: 11 pages, LaTeX (mn2e.cls), incl. 9 PostScript (ps or eps) figures
and 2 tables. Accepted by MNRA
Imaging galactic diffuse clouds: CO emission, reddening and turbulent flow in the gas around Zeta Oph
Methods: 12CO emission is imaged in position and position-velocity space
analyzed statistically, and then compared with maps of total reddening and with
models of the C+ - CO transition in H2-bearing diffuse clouds. Results: Around
Zeta Oph, 12CO emission appears in two distinct intervals of reddening centered
near EBV = 0.4 and 0.65 mag, of which < 0.2 mag is background material. Within
either interval, the integrated 12CO intensity varies up to 6-12 K-km/s
compared to 1.5 K-km/s toward Zeta Oph. Nearly 80% of the individual profiles
have velocity dispersions < 0.6 km/s, which are subsonic at the kinetic
temperature derived from H2 toward Zeta Oph, 55 K. Partly as a result, 12CO
emission exposes the internal, turbulent, supersonic (1-3 km/s) gas flows with
especial clarity in the cores of strong lines. The flows are manifested as
resolved velocity gradients in narrow, subsonically-broadened line cores.
Conclusions: The scatter between N(CO) and EBV in global, CO absorption line
surveys toward bright stars is present in the gas seen around Zeta Oph,
reflecting the extreme sensitivity of N(12CO) to ambient conditions. The
two-component nature of the optical absorption toward Zeta Oph is coincidental
and the star is occulted by a single body of gas with a complex internal
structure, not by two distinct clouds. The very bright 12CO lines in diffuse
gas arise at N(H2) ~ 10^21/cm^2 in regions of modest density n(H) ~ 200-500/cc
and somewhat more complete C+-CO conversion. Given the variety of structure in
the foreground gas, it is apparent that only large surveys of absorption
sightlines can hope to capture the intrinsic behavior of diffuse gas.Comment: 2009 A&A, in pres
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