CORC

在结果中检索

CORC

浏览/检索结果: 共68条，第1-10条 帮助

已选(0)清除 条数/页：   排序方式：
碳氮稳定同位素比值在潮间带大型底栖动物组织间差异性研究 期刊论文
海洋学报, 2019, 卷号: 41, 期号: 4, 页码: 74-82
作者:  李宝泉
收藏  |  浏览/下载：37/0  |  提交时间：2020/06/17
潮间带  大型底栖动物  碳氮稳定同位素  食源和营养级分析  采样部位选取  intertidal zone  macrobenthos  carbon and nitrogen stable isotopes  food sources and trophic levels study,sampling parts  The technique of stable isotope analysis has been widely applied for the field of food web studies in recent years.However,few researches concerned about the impacts of different tissues used for analysis on the food web building.With the purpose of accuracy and comparability in the food web studies,the sampling tissues should be standardized.In this study,10macrobenthic species from the intertidal zone of the Yellow River Delta and Yantai were chosen as the target object to test the isotopic characteristic variations ofdelta~(13)C anddelta15 N at different body parts (whole bodies,muscles and gills).Our results show thatdelta~(13)C anddelta15 N values vary in different sampling tissues for most species,which indicates the different tissues used for analysis impact the food web building.To achieve a more accuracy and comparability result,suitable tissue should be primarily chosen for their food sources and trophic levels analysis.Namely,when the organism as predator,their muscles should first be chosen,for examples,adductor and foot muscles of mollusks,leg muscles of crabs and back muscles of fishes  when the organism as prey, most of their tissues,except for indigestible part(for polychaetes,the digestive tract contents should be removed) should be chosen for analysis on food sources and trophic levels of the secondary consumer,for example,whole soft parts of mollusks,the mixture of muscles and gills of crabs.  
环境水体中痕量溶解态铝分析新方法的研究和应用 学位论文
2017, 2016
周挺进
收藏  |  浏览/下载：146/0  |  提交时间：2017/06/20
海水中痕量锰的现场式检测新方法及相应分析仪器的研究和应用 学位论文
2017, 2016
冯思超
收藏  |  浏览/下载：147/0  |  提交时间：2017/06/20
Hybrid analytical model of switched reluctance machine for real-time hardware-in-the-loop simulation 期刊论文
IET ELECTRIC POWER APPLICATIONS, 2017, 卷号: 11, 期号: 6
作者:  Xu, Fengqiu;  Dinavahi, Venkata;  Xu, Xianze
收藏  |  浏览/下载：16/0  |  提交时间：2019/12/05
reluctance machines  hardware-in-the loop simulation  electric machine analysis computing  machine theory  magnetic circuits  magnetic flux  equivalent circuits  stators  rotors  harmonic analysis  Newton-Raphson method  Gaussian processes  integration  field programmable gate arrays  parallel architectures  pipeline arithmetic  Ansys Simplorer simulation  Simulink simulation  drive circuit  control system  Ansys Maxwell simulation  offline transient solution  pipelined arithmetic processing  parallel hardware architecture  field-programmable gate array  digital hardware implementation  electromagnetic torque computation  Gaussian quadrature  exciting current calculation  Newton-Raphson method  backward Euler method  SHM  space harmonic method  rotor pole  stator pole  MEC method  magnetic equivalent circuit method  phase flux linkage  HIL simulation  hybrid analytical model  HAM  SRM  hardware-in-the-loop simulation  switched reluctance machine  
Influence and sensitivity analysis of surrounding rock thermal parameters on temperature field of cold region tunnel 期刊论文
Tumu Gongcheng Xuebao/China Civil Engineering Journal, 2017, 卷号: 50, 页码: 117-122
作者:  Li, Si;  Sun, Keguo;  Qiu, Wenge;  Xu, Weiping;  Li, Liping
收藏  |  浏览/下载：3/0  |  提交时间：2019/12/12
Virus-like particle-based human vaccines: quality assessment based on structural and functional properties 期刊论文
http://dx.doi.org/10.1016/j.tibtech.2013.09.002, 2013
Zhao, Qinjian; Li, Shaowei; Yu, Hai; Xia, Ningshao; Modis, Yorgo; 赵勤俭; 李少伟; 俞海; 夏宁邵
收藏  |  浏览/下载：2/0  |  提交时间：2015/07/22
Research on the torque characteristic of disc micromotor on axial magnetic field (EI CONFERENCE) 会议论文
2012 2nd International Conference on Consumer Electronics, Communications and Networks, CECNet 2012, April 21, 2012 - April 23, 2012, Three Gorges, China
Liu B.
收藏  |  浏览/下载：47/0  |  提交时间：2013/03/25
In order to increase the electromagnetic torque density of micromotor with axial magnetic field  numerical analysis of permanent magnetic field and electromagnetic torque were deduced and the key factors of increasing torque density of micromotor was obtained. The numerical analysis of three-dimensional magnetic field in air gap produced by spliced sector permanent magnetic poles is done  and the way of improving flux density and permanent magnet use efficiency are given through investigating the influence of magnet thickness  height of air gap and pole interval rate and other parameters to air gap flux density and leakage flux. Based on the test of axial magnetic field and torque characteristic of micromotor  the analysis of micromotor magnetic field and calculation of torque are verified  meanwhile using the plane stator with 0.7mm thickness assemble micromotor having minimum air gap height of 1mm and its torque constant up to 3.8mNm/A. 2012 IEEE.  
Field-line coupling interference prediction of LCD module in high-power TEA CO2 laser system (EI CONFERENCE) 会议论文
2012 International Conference on Optoelectronics and Microelectronics, ICOM 2012, August 23, 2012 - August 25, 2012, Changchun, China
Ge X.; Li X.
收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25
Study of horizontal shafting with spherical four-way structure (EI CONFERENCE) 会议论文
2012 International Conference on Optoelectronics and Microelectronics, ICOM 2012, August 23, 2012 - August 25, 2012, Changchun, China
Yang L.
收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25
Altazimuth photoelectric theodolite level shaft U-type and T-type structure  but with the expanding field of applications of photoelectric theodolite  the horizontal shaft structure occur great changes. For example  in the marine environment  shipboard conditions  the instrument has a waterproof  corrosion-resistant  easy maintenance and other functions  while carrier-based optoelectronic devices from a single visible television configure the development of integrated infrared system and ranging system as one of the single-station measurement system  due to the spherical structure has sufficient internal space exactly adapted to this need. In this paper  the horizontal axis of a spherical four-way structure. From aspects of the spherical four-way split in the form and shafting design and finite element analysis of the detailed design. A spherical four-way horizontal axis system  diameter 550mm  weight 19kg sphere  in the 40kg load  the maximum deformation of 3.3m  fully meet the requirements. The shaft of the structure of the shaking is less than 2 arc seconds  the vibration test  the re-examination instrument accuracy change is less than 1 arc seconds. Verify that the structure is stable and reliable. 2012 IEEE.  
Text detection in natural scenes with salient region 会议论文
作者:  Meng, Quan;  Song, Yonghong
收藏  |  浏览/下载：8/0  |  提交时间：2019/12/10

©版权所有 ©2017 CSpace - Powered by CSpace