求借一把廉政英雄128的好号，没人挤。😁

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The UV Upturn in Elliptical Galaxies as an Age Indicator
Authors:Yi (Caltech), Lee (Yonsei), Woo (Yonsei),
(Carnegie)
Abstract: We show that the UV flux of old stellar systems can tell us about their ages.
Two independent populations synthesis groups that have had wildly different
views have here worked together and generated two solutions that can be easily
tested using space telescopes. Proposed tests will constrain the ages of giant
Es, that are often considered the oldest populations in the universe, and thus
cosmology.
Astrophysics (astro-ph)
Journal&reference:
Astrophys.J.513:128-141,1999
for this version)
Submission history
From: Sukyoung Yi []
[v1] Thu, 1 Oct :36 GMTSAW Properties of SiO2/128° Y-X LiNb03Structure Fabricated by Magnetron Sputtering Technique
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&(Volume:31Fluids--good and bad actors: observations from the College of American Pathologists... - Abstract - Europe PMC
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AmeriPath Indiana, Indianapolis 46219, USA.
[):513-518]
Evaluation Studies, Journal Article, Comparative Study
10.65(:FABAOF&2.0.CO;2
CONTEXT: Body cavity fluid examination presents a common and sometimes difficult diagnostic challenge in daily cytology practice.
Separating benign from malignant cellular changes may require meticulous screening, careful scrutiny of cellular features, and an understanding of the range of reactive changes.
We use the data from the College of American Pathologists (CAP) Interlaboratory Comparison Program in Nongynecologic Cytology (NGC) to identify characteristics of fluids that place them at opposite ends of the diagnostic spectrum.
OBJECTIVE: To assess the features of individual body cavity fluid slides that demonstrated good performance characteristics and compare them to slides that were poor performers.
DESIGN: A databank of 10 396 laboratory responses, including a variety of malignant and benign cases obtained from 1997 through 2001, was used to select cases.
A cumulative slide history was used to identify slides that performed well or poorly in each reference diagnosis.
Cases were confirmed by consensus of 4 CAP Cytopathology Resource Committee members.
Observations and characterizations of good and bad performers in each category were recorded and summarized.
RESULTS: Percentage of concordance of poor performers ranged from 0% to 58%.
Conversely, good performers were identified with high concordance of laboratory diagnosis in each reference category (&80%).
Several patterns emerged.
Poorly performing cases of
consisted of slides with rare
malignant cases without 2
populations, and cases with single .
Poor performance in confirmed squamous
cases related to rare
cases performed poorly when there were few malignant .
cases demonstrated poor performance when there were abundant pleomorphic lymphoid
or when rare Reed- Sternberg-like
were present.
Reactive or negative slides performed best with a pol poor performers were those with a predominant lymphocyte population mistaken for a .
CONCLUSION: Close attention to classic cytologic criteria and careful examination of slides may enhance the educational experience of participants and the performance characteristics of body cavity fluid specimens in the CAP NGC program.
Lessons from bad actors in the CAP NGC program may increase awareness of potential diagnostic problems in daily practice or help identify areas for laboratory quality improvement.
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