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| 1 | Topographic species-habitat associations of tree species in a heterogeneous tropical karst seasonal rain forest, China显示文摘Aims Tropical and subtropical karst forests of south China are under increas-ing pressure from over-exploitation causing widespread habitat degra-dation and biodiversity loss.Previous research has demonstrated that topography,as a proxy for resource availability,plays an important role in shaping tree species distributions in tropical forests.However,the association between growth stages and habitats types has not been considered in this analysis.Our aim was to examine the differences among different habitat types to determine whether tree species show similar species-habitat associations at young and mature life stages.Methods We used multivariate regression tree analysis to examined species-habitat associations among eight topographically defined habitats.The results were tested with a torus-translation test and canonical correspondence analysis(CCA)for 74 species in a 15 ha karst tropi-cal seasonal rain forest at the Nonggang National Natural Reserve in south China.We considered two life stages(young and mature)of trees species that showed a positive association with topography.Important Findings We found marked differences in community characteristics and number of associations among the eight habitats.Of the 74 species subjected to torus-translation test,63 had significant positive and 70 had significant negative associations with one or more of the eight habitats.Positive associations were more frequent in higher elevation habitats and negative associations were more frequent in lower eleva-tion habitats.This suggests that edaphic and hydrological variation related to topography play important roles in habitat partitioning in heterogeneous karst forests.For the 63 tree species with significant positive associations to at least one habitat,40 of them had the same positive association at young and mature life stages.The CCA revealed that the six topographic variables considered had consistent relation-ships with species distribution among all individuals and their two life stages.This indicates that most of the karst forest tree species show consistent associations with a single habitat throughout their life.We conclude that niche differentiation plays an important role in main-taining the diversity of this heterogeneous species-rich karst forest. | Yili Guo Bin Wang Azim U.Mallik Fuzhao Huang Wusheng Xiang Tao Ding Shujun Wen Shuhua Lu Dongxing Li Yunlin He Xiankun Li | 2017 | Journal of Plant Ecology2017，10，3： | 6 |
| 2 | Dexmedetomidine Inhibits Inflammatory Reaction in Lung Tissues of Septic Rats by Suppressing TLR4/NF- κ B Pathway显示文摘 | Yuqing Wu Yingchun Liu He Huang Yangzi Zhu Yong Zhang Fuzhao Lu Ce Zhou Li Huang Xin Li Chenghua Zhou Celeste C. Finnerty | 2013 | Mediators of Inflammation2013，，： | 2 |
| 3 | The solvability conditions for the inverse eigenvalue problems of centro-symmetric matrices显示文摘 | ZHOU Fuzhao HU Xiyan LEI Zhang | | 0，，： | 1 |
| 4 | The solvability conditions for the inverse eigenvalue problems of centro-symmetric matrices显示文摘 | Zhou Fuzhao Hu Xiyan Zhang Lei | 2003 | Linear Algebra Appl2003，364，： | 1 |
| 5 | Effects of Organic Fertilizers Made from Distiller's Grains on the Growth and Development of Flue-cured Tobacco显示文摘Pot experiments were conducted to study the effects of different organic fertilizers made from distiller's grains on the physiological characteristics and growth of flue-cured tobacco. The results showed that the agronomic traits and biomass of flue-cured tobacco in the three treatments were higher than that of the control group,and the mixed application of different organic fertilizers made from distiller's grains and compound fertilizer could promote the growth and development of flue-cured tobacco significantly. | Sheng JIANG Miao YANG Fei XIONG Yonghui ZHANG Chun XIA Jiao GUAN Kefan CAI Juntao HE Yuangai ZHANG Fei WANG Fuzhao NIAN | 2018 | Agricultural Biotechnology2018，7，3： | 1 |
| 6 | Scavenging of hydrogen peroxide and inhibition ofultraviolet light-induced oxidative dna damage by aqueousextracts from green and black teas显示文摘 | H WEI X ZHANG J FUZHAO | 1999 | Free Radical Biology & Medicine1999，26，1112： | 1 |
| 7 | The solvability conditions for the inverse eigenvalue problems of reflexive matrices显示文摘 | | 2006 | Journal of Computational and Applied Mathematics2006，，188： | 1 |
| 8 | Formation Mechanism of Nanoparticles in Fe-Cr-Al ODS Alloy Fabricated by Direct Oxidation Method显示文摘This study presents the fabrication of 14CrFe-Cr-Al oxide dispersion strengthened(ODS)alloy by a direct oxidation process.In order to explain how oxide nanoparticles are formed in the consolidation process,the powders after oxidation are subjected to vacuum thermal treatment at high temperatures.Differential scanning calorimeter,X-ray photoelectron spectroscopy,scanning electron microscopy and transmission electron microscopy techniques are used to detect the generation,evolution of oxides on both the surface and interior of the powder,as well as the type of oxide nanoparticles in the fabricated ODS alloy.It is found that an iron oxide layer is formed on the surface of the powder during low temperature oxidation.And the iron oxide layer would be decomposed after thermal treatment at high temperature.In the consolidation process,the oxygen required by the reaction of alumina and yttrium oxide to produce nano scale Y-Al-O particles mainly derives from the decomposition of iron oxide layer at elevated temperature and the inward diffusion of oxygen.Using the direct oxidation process,YAlO_(3) nanoparticles are dispersed in the grains and at the grain boundaries of Fe-Cr-Al ODS alloy. | Fuzhao Yan Jing Li Yiyi Li Liangyin Xiong Shi Liu | 2021 | Acta Metallurgica Sinica(English Letters)2021，34，7： | 0 |
| 9 | Effects of Distiller's Grain Substrate with Acid Regulation on the Growth of Tobacco Seedlings in Floating Breeding System显示文摘In order to reduce the use of peat resources and realize the sustainable development of tobacco,the pH of distiller's grain substrate was adjusted with humic acid,and the effects of various distiller's grain substrates on the growth of tobacco seedlings were studied to find out the method of cultivating high-quality tobacco seedlings by using distiller's grain substrate. The results showed that when 60% of humic acid was added to the distiller's grain substrate made from coarse distiller's grains,fine distiller's grains,perlite and vermiculite,both the pH and electrical conductivity decreased significantly and were similar to that of the conventional substrate. Moreover,the emergence rate of tobacco seedlings,the rate of strong tobacco seedlings,leaf number,stem height,root growth and quality of tobacco seedlings were good. | Sheng JIANG Sang HU Fei XIONG Yonghui ZHANG Chun XIA Zilin LI Yongyu ZHAO Guangming TANG Fenglan QIN Qixin GU Jinchao ZHAO Junfeng XIN Fuzhao NIAN | 2018 | Agricultural Biotechnology2018，7，4： | 0 |
| 10 | Research on motor rotation anomaly detection based on improved VMD algorithm显示文摘Purpose–The electromechanical brake system is leading the latest development trend in railway braking technology.The tolerance stack-up generated during the assembly and production process catalyzes the slight geometric dimensioning and tolerancing between the motor stator and rotor inside the electromechanical cylinder.The tolerance leads to imprecise brake control,so it is necessary to diagnose the fault of the motor in the fully assembled electromechanical brake system.This paper aims to present improved variational mode decomposition(VMD)algorithm,which endeavors to elucidate and push the boundaries of mechanical synchronicity problems within the realm of the electromechanical brake system.Design/methodology/approach–The VMD algorithm plays a pivotal role in the preliminary phase,employing mode decomposition techniques to decompose the motor speed signals.Afterward,the error energy algorithm precision is utilized to extract abnormal features,leveraging the practical intrinsic mode functions,eliminating extraneous noise and enhancing the signal’s fidelity.This refined signal then becomes the basis for fault analysis.In the analytical step,the cepstrum is employed to calculate the formant and envelope of the reconstructed signal.By scrutinizing the formant and envelope,the fault point within the electromechanical brake system is precisely identified,contributing to a sophisticated and accurate fault diagnosis.Findings–This paper innovatively uses the VMD algorithm for the modal decomposition of electromechanical brake(EMB)motor speed signals and combines it with the error energy algorithm to achieve abnormal feature extraction.The signal is reconstructed according to the effective intrinsic mode functions(IMFS)component of removing noise,and the formant and envelope are calculated by cepstrum to locate the fault point.Experiments show that the empirical mode decomposition(EMD)algorithm can effectively decompose the original speed signal.After feature extraction,signal enhancement and fault identification,the motor mechanical fault point can be accurately located.This fault diagnosis method is an effective fault diagnosis algorithm suitable for EMB systems.Originality/value–By using this improved VMD algorithm,the electromechanical brake system can precisely identify the rotational anomaly of the motor.This method can offer an online diagnosis analysis function during operation and contribute to an automated factory inspection strategy while parts are assembled.Compared with the conventional motor diagnosis method,this improved VMD algorithm can eliminate the need for additional acceleration sensors and save hardware costs.Moreover,the accumulation of online detection functions helps improve the reliability of train electromechanical braking systems. | Fuzhao Chen Zhilei Chen Qian Chen Tianyang Gao Mingyan Dai Xiang Zhang Lin Sun | 2024 | Railway Sciences2024，3，1： | 0 |
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