587 research outputs found
sj-doc-1-tva-10.1177_15248380241246758 – Supplemental material for Association Between Adverse Childhood Experiences and Academic Performance Among Children and Adolescents: A Global Meta-Analysis
No full textSupplemental material, sj-doc-1-tva-10.1177_15248380241246758 for Association Between Adverse Childhood Experiences and Academic Performance Among Children and Adolescents: A Global Meta-Analysis by Guangbo Qu, Liqin Shu, Haixia Liu, Shaodi Ma, Tiantian Han, Huimei Zhang, Christy Huang, Jun Wang, Linsheng Yang and Yehuan Sun in Trauma, Violence, & Abuse</p
The long rather than the short allele of 5-HTTLPR predisposes Han Chinese to anxiety and reduced connectivity between prefrontal cortex and amygdala
No full textThe short allele of the serotonin-transporter gene is associated with higher risk for anxiety and depression in Caucasians, but this association is still unclear in Asians. Here, we addressed this issue using behavioral and multi-modal MRI approaches in a large group of healthy Han Chinese participants (n = 233). In contrast to findings in Caucasians, we found that long-allele (L) carriers had higher anxiety scores. In another group (n = 64) experiencing significant levels of depression or anxiety, the L-allele frequency was also significantly higher. In healthy participants, L-carriers had reduced functional and anatomical connectivity between the amygdala and prefrontal cortex (PFC), which was correlated with anxiety or depression scores. Our findings demonstrated that in Chinese Han participants, in contrast to Caucasians, the L-allele confers vulnerability to anxiety or depression and weakens top-down emotional control between the PFC and amygdala. Therefore, ethnic background should be taken into account in generelated studies and their potential clinical applications
Investigating the effect of oxygen vacancy on the dielectric and electromechanical properties in ferroelectric ceramics
No full textAuthor name used in this publication: Haixia Cao2008-2009 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishedVoR allowe
A super-flexible and lightweight membrane for energy harvesting
No full textThis paper presents a super-flexible and lightweight membrane for energy harvesting. Based on the combined effect of contact electrification and electrostatic induction, a triboelectric energy harvester (TEH) was designed, simulated, fabricated, and tested. Thanks to the specially designed structure and electrode pattern, this super-flexible TEH can produce root mean square (RMS) voltage of 33.8 V and average power of 40.7 μW. Moreover, this membrane is capable of harvesting multi-type mechanical energy, including different motion styles and various contacted materials. ? 2015 IEEE.EI55-5
Electron spin dynamics of ferromagnetic Ga1-xMnxAs across the insulator-to-metal transition
No full textPrevalence, clinical correlates and IQ of suicidal ideation in drug naïve Chinese Han patients with major depressive disorder
No full textHighlightsData were collected from 488 Chinese Han drug-naïve MDD patients.The prevalence of suicidal ideation in the study cohort was 32.8%.Patients with SI had a lower measured IQ than patients without SI.Patients with suicidal ideation were more likely to be divorced, have more severe depression symptoms and more psychotic symptoms.<p/
Design and Fabrication of Integrated Magnetic MEMS Energy Harvester for Low Frequency Applications
No full textAn integrated vibration-to-electrical MEMS electromagnetic energy harvester with low resonant frequency is designed, simulated, fabricated and tested. Special structures and magnet arrays of the device are designed and simulated for favorable low frequency performance. Both FEM simulations and system-level simulations are conducted to investigate the induced voltage of the device. Two types of harvester are fabricated with different magnet arrays and the magnetic field of the two harvesters is investigated. With the combination of the microfabricated metal structures and the electroplated CoNiMnP permanent micro magnets, the designed harvesters are of small size (5 mm x 5 mm x 0.53 mm) without manual assembly of conventional bulk magnets. The output power density is 0.03 mu W/cm(3) with optimized resistance load at 64 Hz. This magnetic harvester is suitable for batch fabrication through MEMS process and can be utilized to drive microelectronic devices, such as micro implantable and portable devices.Engineering, Electrical & ElectronicEngineering, MechanicalSCI(E)[email protected]; [email protected]; [email protected]; [email protected]
A single-electrode wearable triboelectric nanogenerator based on conductive & stretchable fabric
No full textThis paper reports a wearable triboelectric nanogenerator (TENG) based on the conductive and stretchable composite fabric, which is cost-effective and can be easily mass produced. Multi-wall carbon nanotubes (MWCNT) are directly composited with the cotton knitting fabric through dipping and drying method. The sheet resistance reduces to 505 Ω/sq after 10 cycles. Using this single knitting fabric electrode, the peak output power density of the TENG achieves ??2 μW/cm2. ? 2016 IEEE.EI1228-12312016-Februar
Fabrication and characterization analysis of flexible porous nitrogen-doped carbon-based supercapacitor electrodes
No full textSupercapacitor as a new-type energy storage device has attracted increasing interests, because it can provide substantially higher specific/volumetric energy density compared to conventional capacitors, and higher power density and longer cycling lifetime compared to Li-ion batteries. Therefore, it shows great promise as green energy storage device for back-up energy systems and electronic vehicles. Among all kinds of supercapacitors, flexible solid-state supercapacitor, which consists of flexible electrodes, solid-state electrolyte and separator, has attracted much attention due to its potential abilities in wearable electronics and flexible devices. Numerous efforts have been devoted to fabricate flexible electrodes because the fundamental limit of energy storage capability is largely determined by the electrode material. Therefore, how to fabricate suitable flexible electrodes alerts significant influence on supercapacitors' performance. Compared to pseudocapacitive materials, carbon-based materials have been widely investigated for flexible electrodes due to their good electrical conductivity, excellent cycling stability, high power density and outstanding mechanical properties. In this work, an effective and feasible method to fabricate carbon-based electrode for the fabrication of flexible and high-performance supercapacitors has been proposed. In order to find the relatively suitable electrode, samples under different experimental conditions have been tested and analyzed systematically. Through the simultaneous activation and carbonization process of the biomass-derived natural silk, all of these carbon-based electrodes have a few features, like hierarchical porous, rich N-doped and carbon nanosheet structure. The as-obtained electrodes show favorable capabilities for electrochemical energy storage. The specific/mass capacitor of the best carbon-based electrode can achieve 226 mF/cm2and 26 F/g, respectively, and the equivalent series resistance of it is only 4 Ω, thus showing satisfactory electrochemical performance. In conclusion, the excellent capacitance performance of the ultralight and flexible nanomaterials makes them promising candidates as electrode materials. Attributed to the good flexibility and ultralight weight, this proposed electrodes can be directly fabricated into flexible solid-state supercapacitor without any binder and conductive agents. ? 2016, Science Press. All right reserved.EI中文核心期刊要目总览(PKU)中国科技核心期刊(ISTIC)121314-13226
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