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Efficient recovery of hydrogen and sulfur resources over non-sulfide based LaFexAl12-xO19 hexaaluminate catalysts by H2S catalytic decomposition 期刊论文  OAI收割
APPLIED CATALYSIS B-ENVIRONMENTAL, 2020, 卷号: 263, 页码: 1-11
作者:  
Jiang, Guoxia;  Zhang, Xin;  Zhang, Fenglian;  Liu, Zizhong;  Wang, Zhuo
  |  收藏  |  浏览/下载:32/0  |  提交时间:2021/09/14
烟台牟平海洋牧场季节性低氧对大型底栖动物群落的生态效应 期刊论文  OAI收割
生物多样性, 2019, 卷号: 27, 期号: 2, 页码: 200-210
作者:  
李宝泉
  |  收藏  |  浏览/下载:21/0  |  提交时间:2020/06/17
低氧  群落结构  群落恢复  敏感种  机会种  hypoxia  community structure  community recovery  sensitive species  opportunistic species  Hypoxia is a common phenomenon in the world's oceans, especially in the shallow waters of coastal zones. Rates of hypoxia are increasing due to global climatic changes and anthropogenic activities. Hypoxia can cause mass mortality of marine animals and can have severe negative impacts on marine ecosystems. To better understand the effects of hypoxia on macrobenthic communities, a survey was carried out in the Muping Marine Ranch (Yantai) during June, August and September of 2016. Results showed that seasonal hypoxia led to changes in benthic community structure, especially in terms of species composition and dominant species. The dominant species were Polychaeta Lumbrinereis latreilli, Sternaspis scutata and Mollusca Endopleura lubrica in summer. The opportunistic species Lumbrinereis latreilli increased, whereas, sensitive species such as Leptomya minuta, Glycera chirori, Upogebia major, Pontocrates altamarimus, Eriopisella sechellensis decreased during the hypoxic period of August. Hypoxia also reduced biodiversity indices. The effect of hypoxia on abundance and biomass were not significant, mainly because of the increase in the opportunistic Lumbrinereis latreilli, which counteracted the decline in abundance and biomass of other species. Individual physiological tolerance to hypoxia was different among species. Lumbrinereis latreilli showed higher tolerance to hypoxia in dissolved oxygen (DO) = 1.0 mg/L compared to other species. Some sensitive species, such as Leptomya minuta, Upogebia major, Pontocrates altamarimus and Eriopisella sechellensis showed lower tolerance when DO < 2.5 mg/L. When DO increased to 2.5 mg/L, the macrobenthic community start to recover gradually. The recovery extent and time needed were closely related to the degree of seasonal hypoxia.  
Purification and reuse of non-point source wastewater via Myriophyllum-based integrative biotechnology: A review 期刊论文  OAI收割
BIORESOURCE TECHNOLOGY, 2018, 卷号: 248, 页码: 3-11
作者:  
Wu, Jinshui;  Chen, Xiang;  Liu, Feng;  Zhang, Shunan;  Luo, Pei
  |  收藏  |  浏览/下载:31/0  |  提交时间:2019/06/21
Investigation on the thermal performance and optimization of a heat pump water heater assisted by shower waste water 期刊论文  OAI收割
ENERGY AND BUILDINGS, 2013, 卷号: 64, 页码: 172-181
作者:  
Chen, Wei;  Liang, Shiqiang;  Guo, Yongxian;  Cheng, Keyong;  Gui, Xiaohong
收藏  |  浏览/下载:61/0  |  提交时间:2015/10/27
High gain observer for drag tracking in mars entry longitudinal guidance (EI CONFERENCE) 会议论文  OAI收割
2012 International Conference on Measurement, Instrumentation and Automation, ICMIA 2012, September 15, 2012 - September 16, 2012, Guangzhou, China
Wu K.; Cui H.; Ma D.; Cui P.
收藏  |  浏览/下载:27/0  |  提交时间:2013/03/25
The new approach for infrared target tracking based on the particle filter algorithm (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者:  
Sun H.;  Han H.-X.;  Sun H.
收藏  |  浏览/下载:57/0  |  提交时间:2013/03/25
Target tracking on the complex background in the infrared image sequence is hot research field. It provides the important basis in some fields such as video monitoring  precision  and video compression human-computer interaction. As a typical algorithms in the target tracking framework based on filtering and data connection  the particle filter with non-parameter estimation characteristic have ability to deal with nonlinear and non-Gaussian problems so it were widely used. There are various forms of density in the particle filter algorithm to make it valid when target occlusion occurred or recover tracking back from failure in track procedure  but in order to capture the change of the state space  it need a certain amount of particles to ensure samples is enough  and this number will increase in accompany with dimension and increase exponentially  this led to the increased amount of calculation is presented. In this paper particle filter algorithm and the Mean shift will be combined. Aiming at deficiencies of the classic mean shift Tracking algorithm easily trapped into local minima and Unable to get global optimal under the complex background. From these two perspectives that "adaptive multiple information fusion" and "with particle filter framework combining"  we expand the classic Mean Shift tracking framework.Based on the previous perspective  we proposed an improved Mean Shift infrared target tracking algorithm based on multiple information fusion. In the analysis of the infrared characteristics of target basis  Algorithm firstly extracted target gray and edge character and Proposed to guide the above two characteristics by the moving of the target information thus we can get new sports guide grayscale characteristics and motion guide border feature. Then proposes a new adaptive fusion mechanism  used these two new information adaptive to integrate into the Mean Shift tracking framework. Finally we designed a kind of automatic target model updating strategy to further improve tracking performance. Experimental results show that this algorithm can compensate shortcoming of the particle filter has too much computation  and can effectively overcome the fault that mean shift is easy to fall into local extreme value instead of global maximum value.Last because of the gray and fusion target motion information  this approach also inhibit interference from the background  ultimately improve the stability and the real-time of the target track. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).  
Recovering of the thermal band of Landsat 7 SLC-off ETM+ image using CBERS as auxiliary data 期刊论文  OAI收割
Advances in Space Research, 2011, 卷号: 48, 期号: 6, 页码: 1086-1093
Chen Feng (陈 峰); Tang Lina (唐立娜); Wang Cuiping(王翠平); Qiu Quanyi(邱全毅)
收藏  |  浏览/下载:21/0  |  提交时间:2011/11/02
Image registration based on log-polar transform and SIFT features (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on Computational and Information Sciences, ICCIS2010, December 17, 2010 - December 19, 2010, Chengdu, Sichuan, China
作者:  
Liu Y.;  Liu Y.;  Liu Y.
收藏  |  浏览/下载:18/0  |  提交时间:2013/03/25
Method for recovering dynamic position of photoelectric encoder (EI CONFERENCE) 会议论文  OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China
作者:  
Sun Y.;  Liu Y.-S.;  Liang L.-H.;  Sun Y.;  Wan Q.-H.
收藏  |  浏览/下载:16/0  |  提交时间:2013/03/25
This paper presents a method to recover dynamic position of photoelectric encoder. While working at dynamic state  original outputs of the photoelectric encoder are in theory two sine or triangular signals with a phase difference of /2. However  there are still deviations of actual output signals. Interpolating on the basis of this deviation signal will result in interpolation errors. In dynamic state  true original signal data obtained by data acquisition system is a time equation. Through processing these data by data equiangular and harmonic analysis  the equation will be converted from time domain to position domain and an original position equation can be formed. Then the interpolation errors also can be obtained. By this method  the interpolation errors can be checked in dynamic state and it can also provide electric interpolation basis so that to improve dynamic interpolation precision of the encoder. Software simulation and experimental analysis all prove the method effective. This method is he basis in theory for precision checking and calibration in motion. 2009 SPIE.