733 research outputs found
Role of Percutaneous Cardiopulmonary Support (PCPS) in Patients with Unstable Hemodynamics During the Peri-Coronary-Intervention Period
Regular Schur labeled skew shape posets and their 0-Hecke modules
Assuming Stanley's -partition conjecture holds, the regular Schur labeled
skew shape posets with underlying set are precisely the
posets such that the -partition generating function is symmetric and the
set of linear extensions of , denoted , is a left weak Bruhat
interval in the symmetric group . We describe the permutations
in in terms of reading words of standard Young tableaux when
is a regular Schur labeled skew shape poset, and classify 's up to
descent-preserving isomorphism as ranges over regular Schur labeled skew
shape posets. The results obtained are then applied to classify the -Hecke
modules associated with regular Schur labeled skew shape posets
up to isomorphism. Then we characterize regular Schur labeled skew shape
posets as the posets whose linear extensions form a dual plactic-closed subset
of . Using this characterization, we construct distinguished
filtrations of with respect to the Schur basis when is a
regular Schur labeled skew shape poset. Further issues concerned with the
classification and decomposition of the -Hecke modules are
also discussed.Comment: 44 page
A Parameter Study of the Dust and Gas Temperature in a Field of Young Stars
We model the thermal effect of young stars on their surrounding environment
in order to understand clustered star formation. We take radiative heating of
dust, dust-gas collisional heating, cosmic-ray heating, and molecular cooling
into account. Using Dusty, a spherical continuum radiative transfer code, we
model the dust temperature distribution around young stellar objects with
various luminosities and surrounding gas and dust density distributions. We
have created a grid of dust temperature models, based on our modeling with
Dusty, which we can use to calculate the dust temperature in a field of stars
with various parameters. We then determine the gas temperature assuming energy
balance. Our models can be used to make large-scale simulations of clustered
star formation more realistic.Comment: 29 pages, 19 figures. Submitted to Ap
Temperature dependence of Mott transition in VO_2 and programmable critical temperature sensor
The temperature dependence of the Mott metal-insulator transition (MIT) is
studied with a VO_2-based two-terminal device. When a constant voltage is
applied to the device, an abrupt current jump is observed with temperature.
With increasing applied voltages, the transition temperature of the MIT current
jump decreases. We find a monoclinic and electronically correlated metal (MCM)
phase between the abrupt current jump and the structural phase transition
(SPT). After the transition from insulator to metal, a linear increase in
current (or conductivity) is shown with temperature until the current becomes a
constant maximum value above T_{SPT}=68^oC. The SPT is confirmed by micro-Raman
spectroscopy measurements. Optical microscopy analysis reveals the absence of
the local current path in micro scale in the VO_2 device. The current uniformly
flows throughout the surface of the VO_2 film when the MIT occurs. This device
can be used as a programmable critical temperature sensor.Comment: 4 pages, 3 figure
7 Role of Percutaneous Cardiopulmonary Support (PCPS) in Patients with Unstable Hemodynamics During the Peri-Coronary-Intervention Period
7 Role of Percutaneous Cardiopulmonary Support (PCPS) in Patients with Unstable Hemodynamics During the Peri-Coronary-Intervention Period
In Vitro Chemosensitivity Using the Histoculture Drug Response Assay in Human Epithelial Ovarian Cancer
The choice of chemotherapeutic drugs to treat patients with epithelial ovarian cancer has not depended on individual patient characteristics. We have investigated the correlation between in vitro chemosensitivity, as determined by the histoculture drug response assay (HDRA), and clinical responses in epithelial ovarian cancer. Fresh tissue samples were obtained from 79 patients with epithelial
ovarian cancer. The sensitivity of these samples to 11 chemotherapeutic agents was tested using the HDRA method according to established methods, and we analyzed the results retrospectively. HDRA showed that they were more chemosensitive to carboplatin, topotecan and belotecan, with inhibition rates of 49.2%, 44.7%, and 39.7%, respectively, than to cisplatin, the traditional drug of choice in epithelial ovarian cancer. Among the 37 patients with FIGO stage Ⅲ/Ⅳ serous adenocarcinoma
who were receiving carboplatin combined with paclitaxel, those with carboplatin-sensitive samples on HDRA had a significantly longer median disease-free interval than patients with carboplatin-
resistant samples (23.2 vs. 13.8 months, p<0.05), but median overall survival did not differ significantly
(60.4 vs. 37.3 months, p=0.621). In conclusion, this study indicates that HDRA could provide useful information for designing individual treatment strategies in patients with epithelial ovarian cancer
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