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성태연,G. R. Booker,A. G. Norman,F. Glas,G. B. Stringfellow 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.2
We have investigated the modulated structures and its associated diffracted diffuse intensity, of organometallic vapor phase epitaxially grown GaPSb (001) layers by using transmission electron microscopy (TEM) and transmission electron diffraction (TED). The TEM results reveal the co-existence of a fine-scale modulated contrast and a fine-scale speckled contrast. In addition, a fine needle-like contrast is observed. The [001] TED results show lines of [110]-oriented diffuse intensity diffuse streaks passing through the fundamental reflections, satellite spots at 1/4g[220] positions, and a [010]-oriented diffuse intensity with spacing of 1/6g[040]. Simulations using the Valence Force Field model were performed to understand the origin of the diffracted features. The observed distributions of diffuse intensity are shown to be partially consistent with random disorder. Furthermore, the [110]-oriented diffuse lines are attributed to a static displacement of the sites of the mixed sublattices.
The Effect of Class times on the Academic Performance of Students in Mathematics
Hector Manaligod,Veronica R. Gamboa,Norman G. Lee,Lamberto Ongkingco, Jr. ASCONS 2021 IJASC Vol.3 No.3
Background/Objectives: This study examined if there a significant difference in math scores between the morning and afternoon class sections of first-year undergraduate game development students in mathematics. Methods/Statistical analysis: This experimental study had a population of an unpaired group composed of a morning and an afternoon class time. The i-Ready® Online Mathematics Assessment by Curriculum Associates was used to measure the math scores of each group proctored by the researchers and analyzed using Levine’s test (t-test) and Mann-Whitney U test. Findings: The results of the study show that there is no significant difference in math scores between the morning and the afternoon class times. Improvements/Applications: For future studies, the researchers aim to determine the math scores of the morning and afternoon class times of the different year undergraduate levels.
Macharistol, a New Cytotoxic Cinnamylphenol from the Stems of Machaerium aristulatum
Seo, Eun-Kyoung,Kim, Nam-Cheol,Mi, Qiuwen,Chai, Heebyung,Wall, Monroe E.,Wani, Mansukh C.,Navarro, Herna´n A.,Burgess, Jason P.,Graham, James G.,Cabieses, Fernando,Tan, Ghee T.,Farnsworth, Norman R.,P 梨花女子大學校 藥學硏究所 2001 藥學硏究論文集 Vol.- No.10
A new clnnamylphenol, machaistol(1), along with a known pterocarpan, (+)-medicarpin(2), were isolated as cytotoxic constituents from the stems of Machaerium aristulatum. In addition, a known pterocarpan, (+)-maackiain(3), and a known isoflavone, formononetin(4), were identified as inactive constituents. Compound 1 was eveluated in the in vivo hollow fiber assay with KB, Col-2, and hTERT-RPE1 cells and found to be inactive at the highest does(25 mg/kg body weight) tested.