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Yang-Yang Guo,Jian-Ping Zhou,Peng Liu 한국물리학회 2010 Current Applied Physics Vol.10 No.4
Dependence of magnetoelectric modulus and phasic difference on the bias magnetic field was studied in a magnetoelectric Pb(Zr, Ti)O3/Terfenol-D laminate composite. The shifts of both magnetoelectric resonant peak and phasic bounce under the bias magnetic field lead to a nonlinear relationship between them. The acoustic velocity of Terfenol-D has a nonlinear dependence on magnetic field, resulting in a similar relationship between the acoustic velocity of the composite and magnetic field. As a result, the magnetoelectric modulus and phase around the resonance frequency exhibit very sensitive dependences on the bias magnetic field.
곽양양(Yang-Yang Guo),홍준희(Jun-Hee Hong),송두상(Doo-Sang Song) 한국생산제조학회 2011 한국생산제조시스템학회 학술발표대회 논문집 Vol.2011 No.4
The purpose of the study is to use simple structure and low price optical fiber sensor to measure the intraocular pressure. The eyeball can be regarded as airtight container which loaded by means of an internal pressure and the corneal surface is transparent film. In this study, condom was used instead of the corneal and connected with hollow cylinder to consist of airtight container. Then the condom vibration characteristics were measured by optical fiber sensor. IOP will be obtained for Using the Correlation between IOP and vibration.
A Comparison of Developmental Trajectories of Prepulse Inhibition between Male and Female Rats
Yang Yang,Yun'ai Su,Chunmei Guo,Yu Feng,Jitao Li,Tianmei Si 대한정신약물학회 2010 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.8 No.3
Objective: Various studies have demonstrated that childhood and adolescence are critical periods of brain development characterized by both dramatic changes and sexual dimorphism in anatomy, physiology and cognition. Prepulse inhibition (PPI) is an operational model of sensorimotor gating process, but data concerning the interactions of sex and normal ontogeny of PPI is of a particular paucity. Methods: We led a longitudinal study to compare the PPI between male and female Sprague-Dawley rats during postnatal day 23 to 43. Results: We found that the PPI of both male and female rats increased during this period. We also found that the PPI of male and female rats had different developmental trajectories when the prepulse intensity was 20 dB [A] above background, a result similar with a previous study done in humans. Conclusion: The finding confirms the face validity of PPI as a model of information processing across species and supports its utilization for investigation of potential aetiological factors implicated in mental disorders.
Guo-Bo Xu,Tao Yang,Jin-ku Bao,Dong-Mei Fang,Guo-You Li 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.5
Isochaetomium A2 (1), a new bis(naphthodihydropyran-4-one), along with chaetochromins A (2) and B(3), was isolated from the solid-state fermented rice cultureof Chaetomium microcephalum. The structure of compound1 was elucidated on the basis of 1D and 2D NMRspectral data, and the relative configuration was confirmedby CD spectrum. Compounds 1–3 possessed significantantimicrobial activity against Escherichia coli 1.044,Staphylococcus aureus 1.252, and Bacillus subtilis 1.079. Moreover, compounds 1–3 showed obvious inhibitoryeffects on mouse spleen cell proliferation with successiveIC50 values of 0.52, 0.19, and 0.24 lM.