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• OAI收割 [10]

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浏览/检索结果: 共10条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 Ecoregional and Phytogeographical Insights into the Distribution of Tulipa in the 'Nature Imperiled' Area of Central Asia for Effective Conservation 期刊论文  OAI收割 DIVERSITY-BASEL, 2023, 卷号: 15, 期号: 12, 页码: 1195 作者:  Asatulloev,Temur;  Dekhkonov,Davron;  Yusupov,Ziyoviddin;  Tojiboeva,Umida;  Cai,Lei   |  收藏  |  浏览/下载：21/0  |  提交时间：2024/05/09 Central Asia  conservation  ecoregion  phytogeographic districts  Tulipa  distribution  phytogeography  SPECIES RICHNESS  RANGE SIZE  BIODIVERSITY  LILIACEAE  DIVERSITY  PATTERNS   A nationwide survey of 20 legacy brominated flame retardants in indoor dust from China: continuing occurrence, national distribution, and implication for human exposure 期刊论文  OAI收割 ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2022, 期号: 0, 页码: - 作者:  Li, Haifeng   |  收藏  |  浏览/下载：102/0  |  提交时间：2022/11/08 POLYBROMINATED DIPHENYL ETHERS  WASTE RECYCLING AREA  IN-HOUSE DUST  PARTICLE-SIZE  HUMAN HAIR  DISTRIBUTION PATTERNS  SEASONAL-VARIATION  PHTHALATE-ESTERS  PBDES  AIR   Multifractal characteristics and spatial variability of soil particle-size distribution in different land use patterns in a small catchment of the Three Gorges Reservoir Region, China 期刊论文  OAI收割 JOURNAL OF MOUNTAIN SCIENCE, 2021, 卷号: 18, 期号: 1, 页码: 111-125 作者:  Chen, Tai-li;  Shi, Zhong-lin;  Wen, An-bang;  Yan, Dong-chun;  Guo, Jin   |  收藏  |  浏览/下载：69/0  |  提交时间：2021/03/01 Land use patterns  Purple soil  Multifractal characteristics  Particle size distribution  Geostatistics  Spatial variability   Multifractal characteristics and spatial variability of soil particle-size distribution in different land use patterns in a small catchment of the Three Gorges Reservoir Region, China 期刊论文  OAI收割 JOURNAL OF MOUNTAIN SCIENCE, 2021, 卷号: 18, 期号: 1, 页码: 111-125 作者:  Chen, Tai-li;  Shi, Zhong-lin;  Wen, An-bang   |  收藏  |  浏览/下载：38/0  |  提交时间：2023/02/28 Land use patterns  Purple soil  Multifractal characteristics  Particle size distribution  Geostatistics  Spatial variability   Evaluating the size distribution characteristics and sources of atmospheric trace elements at two mountain sites: comparison of the clean and polluted regions in China 期刊论文  OAI收割 ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2020, 页码: 84033 作者:  Liu Zirui;  Hu Bo;  Yang Yongjie;  Zhang Deqiang;  Li Wei   |  收藏  |  浏览/下载：33/0  |  提交时间：2020/09/01 Trace elements  Size distribution patterns  Source regions  PRD  Tibetan Plateau region   Spatial and temporal dynamics of nutrients in riparian soils after nine years of operation of the Three Gorges Reservoir, China 期刊论文  OAI收割 SCIENCE OF THE TOTAL ENVIRONMENT, 2019, 卷号: 664, 页码: 841-850 作者:  Ye, Chen;  Chen, Chengrong;  Butler, Orpheus M.;  Rashti, Mehran Rezaei;  Esfandbod, Maryam   |  收藏  |  浏览/下载：34/0  |  提交时间：2019/10/17 Nutrient distribution patterns  Hydrological conditions  Soil particle size  Riparian zone  Three Gorges Reservoir   Effect of Catch-Can Spacing on Calculation of Sprinkler Irrigation Application Uniformity 期刊论文  OAI收割 CLEAN-SOIL AIR WATER, 2018, 卷号: 46, 期号: 7 作者:  Pute Wu;  Zhang, L (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China.;  Lin Zhang;  Gary P. Merkley;  Delan Zhu   |  收藏  |  浏览/下载：42/0  |  提交时间：2018/09/25 Coefficient Of Uniformity  Grid Size  Water Application Rate  Water Depth  Water Distribution Patterns   Using pedotransfer functions to estimate soil hydraulic conductivity in the Loess Plateau of China SCI/SSCI论文  OAI收割 2016 作者:  Zhao C. L.;  Shao, M. A.;  Jia, X. X.;  Nasir, M.;  Zhang, C. C. 收藏  |  浏览/下载：74/0  |  提交时间：2016/12/16 Saturated soil hydraulic conductivity  Loess Plateau  Artificial neural  network  Multiple linear regression  Stability  artificial neural-networks  particle-size distribution  physical-properties  water conservation  bulk-density  prediction  inference  variables  patterns  systems   Particle size variation of aeolian dune deposits in the lower reaches of the Heihe River basin, China SCI/SSCI论文  OAI收割 2014 Zhu B. Q.; Yu J. J.; Rioual P.; Ren X. Z. 收藏  |  浏览/下载：44/0  |  提交时间：2014/12/24 Aeolian sediment  Grain size  Sorting process  Log-probability  distribution  Sediment provenance  Central Asia  desert sand dunes  grain-size  loess plateau  linear dunes  distribution  patterns  longitudinal-dune  windward flanks  usri river  red clay  transport   The synthesis and field emission property of carbon nanotubes on carbon fibers substrate (EI CONFERENCE) 会议论文  OAI收割 Technical Digest of the 20th International Vacuum Nanoelectronics Conference, IVNC 07, July 8, 2008 - July 12, 2008, Chicago, IL, United states Leyong Z.; Weibiao W.; Jingqiu L.; Yuxue X.; Da L.; Song C.; Haifeng Z. 收藏  |  浏览/下载：34/0  |  提交时间：2013/03/25 Using ferrocene as catalyst precursor  C2H2 as carbon source  carbon nanotubes (CNTs) with uniform density were synthesized on carbon fibers substrate by floating catalyst method. The morphology and microstructure were characterized by field emission scanning electron microscope (FESEM) and high-resolution transmission electron microscopy (HRTEM). The observation showed that the length of CNTs is about 2 m  the average space between adjacent CNTs is about 300 nm and the diameter of CNT is about 45 nm. The less dense "short and stubby" aligned CNTs films should have good electron field emission characteristics. The results of field emission showed that the emission current of CNTs/carbon fibers was 5 A at the field of 2.5 V/m  and the emission current can be 280 A with a field of 7 V/m (the specimen area is 0.25 cm2 and the distance between cathode and anode is 200 m). The calculation based on the F-N plot indicated that the field enhancement factor of CNTs tip is 499122. Using the conductivity and chemical stability of carbon fibers and the uniform and sparse density distribution of CNTs on carbon fibers substrate  the tip predominance of carbon nanotubes can be exerted  and simultaneously the effect of screening effects between adjacent carbon nanotubes on the field emission performance can also be effectively decreased. The CNTs synthesized on carbon fibers substrate has many predominances for the fabrication of cold cathode devices. For example  using the removability of carbon fibers  the cathode of CNTs/carbon fibers can be arbitrarily moved  enlaced or combined to form different patterns  and the cathode of CNTs/carbon fibers can be also fabricated in large size. Therefore  CNTs/carbon fibers may have potential application in field emission displays.