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| 1 | Sliding Wear of the Hybrid Kevlar/PTFE Fabric Reinforced Phenolic Composite Filled with Nano-titania显示文摘The Kevlar/polytetrafluroethylene(Kevlar/PTFE) fabric composite can be used as a self-lubricating liner of the self-lubricating bearing.Many types of nano-particles can improve the tribological performance of the polymer-based composite.Unfortunately,up to now,published work on the effect of nano-particles on the tribological performance of the fabric composite which can be used as a self-lubricating liner is quite scarce.Therefore,for the purpose of exploring a way to significantly improve the tribological performance of the fabric composite,the tribological performance of the Kevlar/PTFE fabric composite filled with nano-titania is evaluated by using the block-on-ring wear tester.The scanning electron microscopy is utilized to observe the morphologies of worn surfaces of the fabric composites and the counterparts.The tensile properties of the composites are evaluated on the universal material testing machine.The test results show that the addition of nano-titania at a proper mass fraction of the matrix resin improves the wear resistance and the tensile strength,decreases the friction coefficient,and makes the wear volume of the composite reach a relative steady state more quickly;plastic deformation and microcutting are important for the wear of the fabric composite;a lubricating layer is formed on the worn surface of the composite during sliding,and the lubricating layer is critical for the tribological performance of the composite;the formation and properties of the lubricating layer are influenced by the nano-titania particles.The proposed study on the effect of nano-titania on the tribological performance of the Kevlar/PTFE fabric composite,especially on the evolution of the worn surface of the composite,provides the basis for further understanding of the influence mechanism of the nano-particles on the tribological performance of the composite and explores a method of improving the tribological performance of the composite. | YANG Yulin HUANG Shijun ZU Dalei ZHANG Ruijun QI Xiaowen | 2011 | Chinese Journal of Mechanical Engineering2011，24，1： | 4 |
| 2 | Vapor phase fabrication of three-dimensional arrayed BiI3 nanosheets for cost-effective solar cells显示文摘Multilayered photovoltaic absorbers have triggered widespread attention for their unique structure and properties.However,multilayered materials in the randomly oriented polycrystalline thin-film lead to ineffective carrier transport and collection,which hinders the process of achieving high-performance solar cells.Herein,this issue is tackled by producing the three-dimensional(3D)heterojunction BiI3 nanosheets(NSs)solar cells,which embed vertically aligned monocrystalline BiI3 NSs into spiro-OMeTAD.The preferred orientation of BiI3 NSs and large p-n junction areas of 3D heterojunction structure enable a strong light absorption and effective carrier transport and collection,and thus a power conversion efficiency(PCE)of 1.45%was achieved.Moreover,this PCE is the highest ever reported for BiI3 based solar cells to our best knowledge.Moreover,the nonencapsulated device remained 96%of the initial PCE after 24 h continuous one sun illumination at^70%humidity condition,and 82%of the initial PCE after 1-month storage at^30%humidity condition. | Yiyi Zhu Qianpeng Zhang Matthew Kam Swapnadeep Poddar Leilei Gu Shijun Liang Pengfei Qi Feng Miao Zhiyong Fan | 2020 | InfoMat2020，2，5： | 2 |
| 3 | Ammonia removal from aqueous solution using natural Chinese clinoptilolite显示文摘 | DU Qi LIU Shijun,CAO Zhonghong al | 2005 | Sep PurifTechnol2005，44，3： | 1 |
| 4 | Ammonium removal from aqueous solution using natural Chinese clinoptilolite显示文摘 | DU Qi LIU Shijun CAO Zhonghong | 2005 | Separation and Purification Technology2005，44，： | 1 |
| 5 | Ammonia removal from aqueous solution using natural Chinese clinoptilolite显示文摘 | Du Qi Liu Shijun Cao Zhonghong | 2005 | Separation and Purification Technology2005，44，： | 1 |
| 6 | Ammonium removal from aqueous solution using natural Chinese clinoptilolite显示文摘 | Du Qi Liu Shijun Cao Zhonghong | 2005 | Separation and Purification Technology2005，44，： | 1 |
| 7 | Origin and chromatin remodeling of young X/Y sex chromosomes in catfish with sexual plasticity显示文摘Assembly of a complete Y chromosome is a significant challenge in animals with an XX/XY sex-determination system.Re cently,we created YY-supermale yellow catfish by crossing XY males with sex-reversed XY females,providing a valuable model for Y-chromosome assembly and evolution.Here,we assembled highly homomorphic Y and X chromosomes by sequencing genomes of the YY supermale and XX female in yellow catfish,reve aling their nucleotide divergences with only less than 1%and with the same gene compositions.The sex-determining region(SDR)was identified to locate within a physical distance of0.3 Mb by FSTscanning.Strikingly,the incipient sex chromosomes were revealed to originate via autosome-autosome fusion and were characterized by a highly rearranged region with an SDR downstream of the fusion site.We found that the Y chromosome was at a very early stage of differentiation,as no clear evidence of evolutionary strata and classical structure features of recombination suppression for a rather late stage of Y-chromosome evolution were observed.Significantly,a number of sex-antagonistic mutations and the accumulation of repetitive elements were discovered in the SDR,which might be the main driver of the initial establishment of recombination suppression between young X and Y chromosomes.Moreover,distinct three-dimensional chromatin organizations of the Y and X chromosomes were identified in the YY supermales and XX females,as the X chromosome exhibited denser chromatin structure than the Y chromosome,while they respectively have significantly spatial interactions with female-and male-related genes compared with other autosomes.The chromatin configuration of the sex chromosomes as well as the nucleus spatial organization of the XX neomale were remodeled after sex reversal and similar to those in YY supermales,and a male-specific loop containing the SDR was found in the open chromatin region.Our results elucidate the origin of young sex chromosomes and the chromatin remodeling configuration in the catfish sexual plasticity. | Gaorui Gong Yang Xiong Shijun Xiao Xi-Yin Li Peipei Huang Qian Liao Qingqing Han Qiaohong Lin Cheng Dan Li Zhou Fan Ren Qi Zhou Jian-Fang Gui Jie Mei | 2023 | National Science Review2023，10，2： | 0 |
| 8 | Preparation of carbon nanotube films towards mechanical and electrochemical energy storage显示文摘Due to unique and excellent properties,carbon nanotubes(CNTs)are expected to become the next-generation critical engineering mechanical and energy storage materials,which will play a key role as building blocks in aerospace,military equipment,communication sensing,and other cutting-edge fields.For practical application,the assembled macrostructures from individual CNTs are the common paradigms such as fibers or films.As the main representative,CNT films can not only retain the unique properties of their CNTs components,but also are more likely for mass-production than other macrostructures.Therefore,in this review,we focus on preparation of CNT films and discuss their emerging applications in the field of mechanical and electrochemical energy storage/conversion.Firstly,different preparation processes are systematically summarized.Then we introduce some typical strategies to improve their mechanical performances besides strengthening mechanism.Based on the progress of mass-production and performance optimization,we further discuss their potential utilization in mechanical and electrochemical energy storage/conversion devices.Finally,future perspectives for the development of CNT films in both production and application are proposed.We hope that this review will shed light on the preparation/assembly of CNT films and integrated application of excellent properties from individual to macroscopic dimensions.Moreover,the preparation and cross-scale application paradigms of CNT films also offer a good model for other macroscopic ordered assemblies of one-dimensional nanomaterials. | Yukang Zhu Yanbin Wei Zhenxing Zhu Hongjie Yue Ziying He Qi Zhang Shijun Zhang Fei Wei | 2023 | Nano Research2023，16，11： | 0 |
| 9 | Existence and implications of hop-17(21)-enes in the lower Cretaceous of the Saihantala Sag, Erlian Basin, China显示文摘C31- to C35-hop-17(21)-enes are identified by gas chromatography-mass spectrometry (GC-MS) analysis to exist as double isomers in most samples of the Aershan Formation and members 1 and 2 of the Tenggeer Formation from well SH3. Comprehensive organic geochemistry and organic petrology study indicates that algae and bacteria are the main biological source of lower Cretaceous sediments in the Saihantala Sag, and this is in accordance with the existence of hop-17(21)-enes. The similar distributions of hop-17(21)-enes and hopanes of these samples indicate that hop-17(21)-enes were transformed into hopanes through hydrogenation during diagenesis processes. The existence of hop-17(21)-enes means that not only the formation of organic matter is related to an anoxic environment and a biological source of algae and bacteria, but also hop-17(21)-enes are direct indicators of hydrocarbon rock at an immature to low-maturity stage. High hydrocarbon conversion ratio, algae and bacteria source and a high abundance of organic matter suggest that the Saihantala Sag has the potential to generate immature to low-maturity oil, which may be of great significance for oil exploration in the Erlian Basin. | Luo Qingyong Yu Shijun Liu Yan Zhang Yanqi Han Hui Qi Lin Zhong Ningning | 2012 | Petroleum Science2012，9，2： | 0 |
| 10 | Journal3.1订阅录入模块的编程方法研究显示文摘通过对Journal 3.1订阅录入模块创建和程序行的分析研究,揭示数据库系统输入数据界面的程序设计思路及编程技巧. | 孙洪雁 Zhang Yi Qiu Canyi Qi Shijun | 2001 | 编辑学报2001，13，3： | 0 |
| 11 | Analysis of operation-related complications of totally laparoscopic aortoiliac surgery显示文摘 | Qi Lixing Gu Yongquan Guo Lianrui Li Xuefeng Wu Yingfeng Cui Shijun Tong Zhu Wu Xin Guo Jianming Zhang Jian Wang Zhonggao | 2014 | Chinese Medical Journal2014，，7： | 0 |
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