نتایج جستجو برای: dx centers
تعداد نتایج: 117950 فیلتر نتایج به سال:
We have investigated the time-dependent mobility and density of a modulation-doped GaAs/AlxGa12xAs heterojunction subsequent to the ionization of DX centers using the persistent photoconductivity effect. Our results are in excellent agreement with a simple theory of mobility limited by independent charged scattering centers. We show that these scattering centers are fluctuations in the average ...
The transition from shallow to deep centers as a function of pressure or alloying is investigated for oxygen and silicon donors in GaN and AlN, based on first-principles total-energy calculations. The stability of the localized deep state (DX center! is found to depend on interactions between the impurity and third-nearestneighbor atoms, which occur in different positions in the zinc-blende and...
Oncotype DX, a 21-gene-array analysis, can guide chemotherapy treatment decisions for women with ER+ tumors. Of 225 ER+ women participating in a patient assistance trial, 23% underwent Oncotype DX testing: 31% of whites, 21% of blacks, and 14% of Hispanics (P = 0.04) were tested. Only 3 white women were treated at municipal hospitals and none was tested. 3% of women treated in municipal hospita...
a major concern in the last few years has been the fact that the cultural centers are keeping distance with what they have been established for and instead of reproducing the hegemony, they have turned into a place for resistance and reproduction of resistance against hegemony. because the cultural centers, as urban public spaces in the last two decades, have been the subject of ideological dis...
Introduction: Breast cancer is the most common cancer in women. Patients are treated with chemotherapy initially, and if not chemically treated, the risk of recurrence of the disease increases yearly. Therefore, methods for identifying patients for whom chemotherapy would be most beneficial are very important. The Oncotype DX test is a prognostic assay that predicts the likelihood of breast can...
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