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Xiaofei Zhou,Jiawei Wan,Yefeng Liu,Di Liu,Hong Wang,Xiaoyong Lai,Yanzhao Zou,Guo Lin,Jian Chen 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2017 NANO Vol.12 No.9
A cooperative assembly route has been developed, by which silver nanoparticles with controlled sizes are incorporated into the channels of ordered cubic mesoporous silica (KIT-6) with different pore sizes (4.3–6.4 nm). The samples were characterized by XRD, TEM, FT-IR, UV-Vis and N2 physisorption. The pore wall of mesoporous silica can efficiently confine the growth of silver nanoparticles within the channels and their average sizes decreased with the pore size reduction of KIT-6. Catalytic activities of the resultant Ag/KIT-6-x (x stands for hydrothermal temperature) composite for reducing harmful organic dye Rhodamine B (Rh B) by sodium borohydride (NaBH4) were investigated. All the Ag/KIT-6 composite samples show great catalytic activities, among which Ag/KIT-6-80 with higher loading and smaller size of Ag nanoparticles exhibits higher catalytic activity than those of Ag/KIT-6-60 and Ag/KIT-6-100.
Yun Deng,Yali Luo,Bingjun Qian,Zhenmin Liu,Yuanrong Zheng,Xiaoyong Song,Shaojuan Lai,Yanyun Zhao 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.2
The antihypertensive activity of few-flower wildrice was studied in spontaneously hypertensive rats (SHRs)with evaluation of blood pressure lowering effects andtranscriptional levels of the sarcoplasmic reticulum Ca2+-ATPase (SERCA2a) gene that is regulated by AngiotensinII (Ang II). SHRs were randomly divided into 5 groupswith 6 rats each. The systolic blood pressure (SBP) reachedthe lowest point 3 h after administration of a single dose ofpaste made from few-flower wild rice stem powder. TheSBP of SHR in the relatively high amount of RSP (HRSP)administrated group was reduced by approximately 30mmHg, compared to the negative control group, and wasnot significantly different from the positive control IPPcontrol group at a dose of 1.5 mg/kg body weight (p>0.05). RSP administrated SHRs showed a significantly higherSERCA2a transcription level than negative control SHRs(p<0.05). RSP administration had no negative effects onglycometabolism of SHR.