搜索结果: 1-12 共查到“理学 SMC”相关记录12条 . 查询时间(0.015 秒)
Time-Frequency Analysis of Superorbital Modulation of X-ray Binary SMC X-1 by Hilbert-Huang Transform
Time-Frequency Analysis Superorbital Modulation X-ray Binary SMC X-1 Hilbert-Huang Transform
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2011/10/21
The high-mass X-ray binary (HMXB) SMC X-1 exhibits a superorbital modulation with a dramatically varying period ranging between ~40 d and ~60 d. This research studies the time-frequency properties of ...
Surveying the Agents of Galaxy Evolution in the Tidally-Stripped, Low Metallicity Small Magellanic Cloud (SAGE-SMC). I. Overview
Surveying Agents Galaxy Evolution Tidally-Stripped Small Magellanic Cloud
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2011/10/13
The Small Magellanic Cloud (SMC) provides a unique laboratory for the study of the lifecycle of dust given its low metallicity (~1/5 solar) and relative proximity (~60 kpc). This motivated the SAGE-SM...
SMC SMP 24: A newly radio-detected planetary nebula in the small magellanic cloud
SMC SMP 24 newly radio-detected planetary nebula
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2011/1/10
In this paper we report new radio-continuum detection of an extragalactic PN: SMC SMP 24. We show the radio-continuum image of this PN and present the measured radio data. The newly reduced radio obse...
Orbital Period Determinations for Four SMC Be/X-ray Binaries
Orbital Period Determinations SMC Be/X-ray Binaries
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2011/1/11
We present an optical and X-ray study of four Be/X-ray binaries located in the Small Magellanic Cloud (SMC). OGLE I-band data of up to 11 years of semi-continuous monitoring has been analysed for SMC ...
New limb-darkening coefficients and synthetic photometry for model-atmosphere grids at Galactic, LMC, and SMC abundances
New limb-darkening coefficients synthetic photometry for model-atmosphere grids SMC abundances
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2010/11/15
New grids of Atlas9 models have been calculated using revised convection parame-ters and updated opacity-distribution functions, for chemical compositions intended to be representative of solar, [M/H]...
Light Curve Solutions of Eclipsing Binaries in SMC
eclipsing binaries light curves modeling Small Magellanic Cloud global parameters
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2010/11/12
We propose a procedure for light-curve solution of eclipsing bi-nary stars in the Small Magellanic Cloud for which photometric data have been obtained in the framework of the OGLE project as well as w...
Mass loss rates inferred from mid-IR color excesses of LMC and SMC O stars
Solar and Stellar Astrophysics (astro-ph.SR) Galaxy Astrophysics (astro-ph.GA)
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2011/1/6
We use a combination of VJHK and Spitzer} [3.6], [5.8] and [8.0] photometry, to determine IR excesses in a sample of LMC and SMC O stars.
基于SMC-RS-LSSVM的电子商务客户流失预测模型
SMC 粗糙集 最小二乘支持向量机
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2010/12/29
为提高个体层次上客户流失预测的精度,建立了基于SMC-粗糙集-最小二乘支持向量机的电子商务客户流失预测模型.该模型首先利用SMC模型计算出客户活跃度,以0.5为阈值判断出客户流失状态,识别出正判客户和错判客户;其次应用粗糙集理论约简出重要的客户流失预测指标体系,然后将训练样本送入最小二乘支持向量机进行学习和训练,进而对测试样本的客户流失状态进行判别.利用某网上商场的2525名客户样本进行电子商务客...
真核生物SMC基因家族中拷贝数目的长期稳定进化
cohesin condensin meiosis segmental duplication SMC
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2009/8/4
Members of the Structural Maintenance of Chromosome (SMC) family have long been of interest to molecular and evolutionary biologists for their role in chromosome structural dynamics, particularly sist...
New insights into the nature of the smc wr/lbv binary hd 5980
smc wr/lbv binary hd 5980
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2009/7/10
New insights into the nature of the smc wr/lbv binary hd 5980。
Old main-sequence turnoff photometry in the SMC
main-sequence photometry SMC
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2009/6/25
Old main-sequence turnoff photometry in the SMC。
脂蛋白(a)的赖氨酸结合异质性对人动脉SMC增殖的影响
脂蛋白(a) 赖氨酸结合 平滑肌细胞 转化生长因子β
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2008/1/5
摘要 为探讨脂蛋白 ( a) [Lp( a) ]的赖氨酸结合功能在致动脉粥样硬化中的作用 ,利用短时超速离心结合凝胶层析分离纯化 Lp( a) ,以 Lysine- Sepharose4B亲和层析分离出能与柱结合的 Lp( a)Lys+ 和不能与柱结合的 Lp( a) Lys-.采用 MTT比色法、流式细胞仪分析细胞增殖状况 ,同时以ELISA法检测细胞培养液中转化生长因子β( TGF-β)的活化...