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您的检索式：作者名="L.Syam Sundar"
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| 1 | Biocompatibility and biotoxicity of in-situ synthesized carboxylated nanodiamond-cobalt oxide nanocomposite显示文摘A nanocomposite that incorporates cobalt oxide(Co_3O_4) and nanodiamond(ND) can present both high magnetism(Co_3O_4) and high hardness(ND). ND particles have potential applications in a variety of fields such as protein immobilization, biosensors, therapeutic molecule delivery and bio-imaging. However,limited information is available in literature on the in-situ synthesis of biocompatible magnetic materials and also on their potential biotoxicity as a result of their entry into environmental compartments and subsequent interaction with biota. In this work, a new kind of bio-compatible magnetic material –carboxylated nanodiamond(c ND) and Co_3O_4 was synthesized to obtain the c ND-Co_3O_4 nanocomposite.The synthesis procedure involved in-situ and chemical reduction of cobalt chloride(CoCl_(26)H_2O) and sodium borohydrate(NaBH_4). The synthesized cND-Co_3O_4 nanocomposite was characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The cyto-genotoxicity of the synthesized nanocomposite material was studied by using onion(Allium cepa L.) as a test model with concentrations of 5, 10 and 20 μg/ml. The study was also extended to cND and Co_3O_4 materials for comparison purpose. Co_3O_4 and cND exhibited their contrasting effects on mitosis and other cyto-genotoxic indices studied herein. This work provided fundamental data on the synthesis and the bio-toxicity of the c ND-Co_3O_4 nanocomposite, which, in turn, can help to expand their multidisciplinary applications. | L.Syam Sundar Naser A.Anjum M.C.Ferro Eduarda Pereira Manoj K.Singh A.C.M.Sousa | 2017 | Journal of Materials Science & Technology2017，33，8： | 1 |
| 2 | 烧结铜丝和沟槽热管热性能特性的实验研究显示文摘热管是最常用的热管理解决方案。为达到最佳效果,在特定的情况下选择合适的热管类型是非常必要的。本研究的目的是比较烧结铜丝热管和沟槽热管两种常用热管的热性能特点。采用重力辅助定位实验对充蒸馏水热管进行了测试,得到毛细管压力、操作温度、热阻和传热系数等参数结果。烧结热管的毛细管压力比所有尺寸沟槽热管的都高。在相同的热负荷下,与烧结热管相比,沟槽热管的工作温度更低。在8 W热负荷下,与烧结热管相比,沟槽热管冷凝器表面温度降低8.24%,蒸发器表面温度降低4.41%,饱和温度降低7.79%。烧结热管的热阻比沟槽热管低得多,在8 W热负荷下,最大相对差值为63.8%。在8 W热负荷下,烧结热管的传热系数是开槽热管的2倍。烧结热管的热阻和传热系数随热负荷的变化几乎呈线性变化,而沟槽热管的热阻和传热系数却出现意外的拐点。与烧结热管相比,沟槽热管更早达到平衡。当热负荷从4增加至20 W时,沟槽热管达到平衡的时间从7 min缩短至4 min,烧结热管的平衡时间从10 min缩短至7 min。 | Saif Ullah KHALID Hafiz Muhammad ALI Muhammad Ali NASIR Riffat Asim PASHA ZAFAR SAID L.Syam SUNDAR Ahmed Kadhim HUSSEIN | 2021 | Journal of Central South University2021，28，11： | 0 |
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