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Search Results: 1 - 10 of 120148 matches for " Baoliang Wang "
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Laboratory Assessment of Lubricants for Wheel/Rail Lubrication
Xingzhong ZHAO,Jiajun LIU,Baoliang ZHU Cuiyuen WANG,
材料科学技术学报 , 1997,
Abstract: The antiwear properties of two wheel/rail lubricating oils were tested and compared on an Amsler machine. Under same testing conditions, oil A (developed by authors) showed much better wear resistance and higher load-carrying capacity than oil B (imported from abroad). The X-ray diffraction (XRD) analyses of the worn surfaces showed that different extreme pressure (EP) lubricating films were formed on the surfaces when the rollers were lubricated with different oils under boundary Iubrication condition. The EP film of oil A was a composite film containing three compounds, FeO, FeSx and FeP, while oil B formed only a simple EP film of FePO4. The composite EP film showed lower shear strength and better antiwear property than the simple EP film,which brought about different wear resistance of the two wheel/rail lubricating oils.
A New Method for Flow Rate Measurement in Millimeter-Scale Pipes
Haifeng Ji,Xuemin Gao,Baoliang Wang,Zhiyao Huang,Haiqing Li
Sensors , 2013, DOI: 10.3390/s130201563
Abstract: Combining the Capacitively Coupled Contactless Conductivity Detection (C 4D) technique and the principle of cross correlation flow measurement, a new method for flow rate measurement in millimeter-scale pipes was proposed. The research work included two parts. First, a new five-electrode C 4D sensor was developed. Second, with two conductivity signals obtained by the developed sensor, the flow rate measurement was implemented by using the principle of cross correlation flow measurement. The experimental results showed that the proposed flow rate measurement method was effective, the developed five-electrode C 4D sensor was successful, and the measurement accuracy was satisfactory. In five millimeter-scale pipes with different inner diameters of 0.5, 0.8, 1.8, 3.0 and 3.9 mm respectively, the maximum relative difference of the flow rate measurement between the reference flow rate and the measured flow rate was less than 5%.
Multi-bunch injection for SSRF storage ring
Bocheng Jiang,Guoqiang Lin,Baoliang Wang,Manzhou Zhang,Chongxian Yin,Yingbing Yan,Shunqiang Tian,Kun Wang
Physics , 2015,
Abstract: The multi-bunch injection has been adopt at SSRF which greatly increases the injection rate and reduces injection time compared to the single bunch injection. The multi-bunch injection will massively reduce the beam failure time during users operation and prolong pulsed injection hardware lifetime. In this paper, the scheme to produce multi bunches for the RF electron gun is described. The refilling result and the beam orbit stability for top up operation is discussed.
FREE VIBRATION ANALYSIS OF VISCOELASTIC FOUNDTION PLATE ON VISCOELASTIC FOUNDATION
粘弹性地基上粘弹性地基板的自由振动解析
Zhu Yanzhi,Xue Baoliang,Wang Guangguo,
祝彦知,薛保亮,王广国
岩石力学与工程学报 , 2002,
Abstract: Based on Maxwell,Kelvin,three elements models of viscoelastic foundations,the free vibration equations of viscoelastic foundation plate on viscoelastic foundations are derived. And the analytical solutions to the natural frequencies are given for viscoelastic rectangular plates of Kelvin and three elements models on Kelvin viscoeastic foundations. Their dynamic behaviors are analyzed and compared for different models. Example and conclusions are given in the end.
Sorption of Aniline and Phenol to Anioncation Organobentonites from Water
阴-阳离子有机膨润土吸附水中苯胺、苯酚的性能
Zhu Lizhong,Wang Qing,Chen Baoliang,
朱利中,王晴,陈宝梁
环境科学 , 2000,
Abstract: A series of anioncation organobentonites were synthesized by covering anioncation mixed surfactants on the bentonite.The intelayer spacings and organic carbon contents of anioncation organobentonites were analyzed.The sorption properties,mechanisms and optimal conditions of organic compounds to anioncation organobentonite were discussed.The results indicate that the organic carbon contents of anioncation organobentonites are proportional to the amounts of anion and cation surfactants covering onto bentonite.Partition medium are excellently created in anioncation organobentonites for organic pollutants in water.The sorption properties of anioncation organobentonites are fine when the alkychain of anion surfactant is same as of cation surfactants exchanging on bentonite.Removal rates of organic pollutants from water are improved by synergistic solubilization of anion and cation surfactant on the organobentonites.
Changes of Protein and Lipid Contents,Amino Acid and Fatty Acid Compositions in Eggs and Yolk-Sac Larvae of American Shad(Alosa sapidissima) Changes of Protein and Lipid Contents,Amino Acid and Fatty Acid Compositions in Eggs and Yolk-Sac Larvae of American Shad(Alosa sapidissima)
LIU Zhifeng,GAO Xiaoqiang,YU Jiuxiang,WANG Yaohui,GUO Zhenglong,HUANG Bin,LIU Baoliang,HONG Lei
- , 2018,
Abstract: To investigate the changes of the biochemical composition of American shad(Alosa sapidissima) eggs and larvae at embryonic and early larval stages, samples were collected at different development stages from artificial fertilization to the end of yolk absorption including 2 h, 12 h and 30 h after fertilization and newly hatched larvae including 1 and 3 days after hatching. The composition of lipid, fatty acids, protein and amino acids were analyzed. The content of total protein exhibited a decreasing trend during embryogenesis and larval development, and a significant reduction was detected after hatching(P < 0.05). The total lipid content remained relative stable. A significant reduction was detected in almost all amino acids after hatching except for glycine(P <0.05), while a significant decrease was found in the content of cysteine, proline, tyrosine, valine, isoleucine, leucine and phenylalanine during the yolk-sac phase(P < 0.05). On the other hand, all the groups of fatty acids remained stable during the period of embryogenesis. But after hatching, a significant decrease was found in the content of C18:2n-6, C18:3n-6, SFA and ratio of EPA/ARA(P < 0.05), while a significant increase was found in the content of C18:3n-3, C20:4n-6, C22:6n-3 and ratio of n-3/n-6(P < 0.05). In conclusion, the combined data suggested that American shad utilizes the protein content as preferential energy substrates during embryonic and early larval developments with some specificity in the consumption of different amino acids
Expression of recombinant human lysozyme in the milk of transgenic mice
Zhengquan Yu,Baoliang Fan,Yunping Dai,Ming Zheng,Huiling Niu,Meili Wang,Lili Wang,Jing Fei,Ning Li
Chinese Science Bulletin , 2003, DOI: 10.1360/03wc0334
Abstract: Human lysozyme is a 130-aa (amino acid) alkaline polypeptide, and has both anti-bacterial and anti-viral properties which make it an important component of human natural immunity system. As a first step toward the ultimate goal of improving the anti-bacterial properties of bovine and ovine milk, a transgenic mouse that contains the genomic DNA sequence of the human lysozme gene has been generated for the first time. From 83 mice generated by microinjection, a total of 6 positive transgenic mice were identified by PCR and Southern blot. F1 mice positive for transgene in lines were also detected by PCR. This shows that transgene could be transmitted from founder transgenic mice to their offspring. Recombinant human lysozyme (rHlys) was found in the whey of 3 female positive transgenic mice by Western blot. The highest concentration of rHlys for transgenic mice was 0.2 mg/mL. The antibacterial activity of the whey for transgenic mice was highly enhanced up to 0.4 times as much as that of human, while that of non-transgenic mouse was very low. Although the lysozyme activity of transgenic mice is still lower than that of human, the rHlys exhibits the same specific activity as that of human lysozyme. It provides a strong basis for further studies into the possible application of rHlys express in mammary gland.
轴向输出TE10模式的紧凑型相对论磁控管的粒子模拟
史迪夫, 钱宝良, 王弘刚, 李伟
SHI Difu, QIAN Baoliang, WANG Honggang, LI Wei
- , 2015, DOI: 10.11887/j.cn.201502008
Abstract: 研究了一种轴向输出TE10模式的紧凑型相对论磁控管，该器件采用6谐振腔结构并工作在π模式上，通过4腔轴向输出的结构设计使得谐振腔结构与矩形输出波导之间形成了较好的过渡，实现了矩形TE10模式的微波输出。与衍射输出相对论磁控管相比，这种结构设计不仅能减小磁控管的轴向和径向的尺寸，使得系统更加紧凑化，而且能在输出波导中获得更加纯净的低阶微波模式。利用粒子模拟软件，初步分析和优化了器件的工作性能。模拟结果表明：当电压为500kV，磁场为0.5T时，该器件的工作频率为2.58GHz，输出功率为1.0GW，功率转换效率达到25.0%。
A compact relativistic magnetron with axial output for TE10 mode was investigated. This magnetron with 6 resonant cavities operates at π mode and can well transit between resonant cavities and rectangular output waveguide through the structure design of 4 cavities axial output, which realizes the microwave output of rectangular TE10 mode. Compared with the magnetron with diffraction output (MDO), this design not only makes both the diameter and the axial length of the magnetron minimized so that the whole system can be more compact, but also provides a much purer output mode of a low order in the output waveguide. The operating performance of the magnetron has been analyzed and optimized by using particle-in-cell simulation software. Simulation results show that the power conversion efficiency can reach to 25.0%, corresponding to the output power of 10GW and the working frequency of 2.58GHz, under the condition of the applied voltage of 500kV and the applied magnetic field of 0.5T.
Molecular Cloning and Sequence Characterization and Tissue Transcription Profile Analyses of Three Novel Common Carp (Cyprinus carpio) Genes-RaB7, RaB8a and RDH1l
Kong Lingfu,BI Baoliang
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2011.585.592
Abstract: The complete coding sequences of three common carp genes RAB7, RAB8A and RDH1L were amplified using the Reverse Transcriptase Polymerase Chain Reaction (RT-PCR) based on the sequence information of the zebrafish and referenced highly homologous common carp ESTs. The sequence analyses of these three genes revealed that common carp RAB7 gene encodes a protein of 204 amino acids which has high homology with the RAB family member rab-7 (RAB7) of fifteen species: Atlantic salmon (97%), zebrafish (91%), sheep (90%), western clawed frog (89%), red jungle fowl (90%), African clawed frog (88%), human (89%), dog (89%), horse (89%), Sumatran orangutan (89%), cattle (89%), rat (89%), mouse (89%), Aiptasia pulchella (88%) and rabbit (87%). The common carp RAB8A gene encodes a protein of 207 amino acids which has high homology with the cmember RAS oncogene family rab8a (RAB8A) of eight species: zebrafish (98%), human (92%), dog (92%), cattle (92%), mouse (91%), rat (91%), Sumatran orangutan (91%) and chicken (87%). The common carp RDH1L gene encodes a protein of 319 amino acids that has high homology with tthe retinol dehydrogenase 1, like (RDH1L) of two species: zebrafish (83%) and Atlantic salmon (65%). Phylogenetic tree analysis revealed that the common carp RAB8A and RDH1L have closer genetic relationships with the zebrafish RAB8A and RDH1L but the common carp RAB7 has a closer genetic relationship with the RAB7 of Atlantic salmon. The tissue transcription profile analyses indicated that that the common carp RAB7, RAB8A and RDH1L genes are generally but differentially expressed in the detected tissues including in tissues including muscle, heart, brain, skin, gills, eye, fin. These data serve as a foundation for further research on these three genes.
Non-blocking Disk-tape Join Algorithm for Data on Tertiary Storage Systems
Baoliang Liu,Jianzhong Li
Information Technology Journal , 2006,
Abstract: The Non-blocking Disk-tape join (NDT) presented in this study was the first disk-tape join algorithm designed with the goal of producing join results as early as possible. It has three phases: the hashing phase, the merging phase and the probing phase. Join results can be produced in each phase. Tuples of disk resident relation and tape resident relation was read simultaneously into memory and be joined in the hashing phase. The merging phase joins those tuples that flushed onto disk during the hashing phase. After the first two phases, disk resident relation has been partitioned and then joined with remaining tape resident relation in the probing phase. Experimental results showed that NDT can produce join results much earlier than the-state-of-art CDT-GH and the performance of NDT was about the same with that of CDT-GH.
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