نتایج جستجو برای: excitation variation

تعداد نتایج: 357652  

2016
Shanzhi Xu Peng Wang Yonggui Dong

In order to measure the impedance variation process in electrolyte solutions, a method of triangular waveform voltage excitation is investigated together with principal component analysis (PCA). Using triangular waveform voltage as the excitation signal, the response current during one duty cycle is sampled to construct a measurement vector. The measurement matrix is then constructed by the mea...

2013
Xiaofeng Duan Ruth Pachter Karen J. Brewer Barry L. Farmer

In this work we investigated by density functional theory (DFT)/time-dependent DFT (TDDFT) supramolecular complexes for photoinitiated electron collection, in particular [{(bpy)2Ru(dpp)}2RhCl2] and related catalysts derived by variation of the ligand/metal. The electron collection in this class of catalysts enables hydrogen production or DNA cleavage, among other applications. Changes in excita...

Journal: :The Journal of General Physiology 2003
Ernst Wolf W. J. Crozier

Variation in the determined magnitudes of the difference in brightness between alternating members of a system of stripes requisite for the elicitation of a threshold response in bees shows that the intensity of excitation, as a function of width of stripe and of intensity of illumination, is determined by the intensity of illumination and by the frequency of occurrence of divisions between bri...

Journal: :Journal of photochemistry and photobiology. B, Biology 2008
Scott M Reed My-Trinh Do Susan E Masta

Fluorophores from the hemolymph of yellow sac spiders (Cheiracanthium mildei) have been characterized using excitation emission matrix (EEM) fluorescence spectroscopy. This approach provides characterization of fluorophores present in the organism without having to isolate pure samples. Minimal variation occurs between individual samples and each EEM has two distinct peaks, suggesting two fluor...

2009
Zhiying Zhang Chongdu Cho Qiang Pan Xilin Lu

In this study, shaking table tests are performed to investigate the behavior of excess pore water pressure in different soft soil-foundations of soil-structure interaction (SSI) system. The variation of the behaviors under cycled minor shock is observed. Moreover, The generation and variation mechanism of excess pore water pressure under earthquake excitation in different soft soilfoundations a...

Journal: :Nature communications 2016
M Kotur D Guénot Á Jiménez-Galán D Kroon E W Larsen M Louisy S Bengtsson M Miranda J Mauritsson C L Arnold S E Canton M Gisselbrecht T Carette J M Dahlström E Lindroth A Maquet L Argenti F Martín A L'Huillier

Electron dynamics induced by resonant absorption of light is of fundamental importance in nature and has been the subject of countless studies in many scientific areas. Above the ionization threshold of atomic or molecular systems, the presence of discrete states leads to autoionization, which is an interference between two quantum paths: direct ionization and excitation of the discrete state c...

2013
M. Sathyakala M. Arutchelvi

For isolated applications, the 3self-excited induction generator driven by wind energy source is more suitable, where the minimum excitation capacitance required for self-excitation of 3induction generator is taken up in this work and the detailed analysis is carried out to determine the range of wind speed variation and consumer demand for the designed capacitance value. An electronic load con...

This paper deals with the study and comparison of passive and active landing gear system of  the aircraft and dynamic responses due to runway irregularities while the aircraft is taxying. The dynamic load and vibration caused by the unevenness of runway will result in airframe fatigue, discomfort of passengers and the reduction of the pilot’s ability to control the aircraft. One of the objectiv...

2014
Ashvin Shah Kevin N. Gurney

Often, when animals encounter an unexpected sensory event, they transition from executing a variety of movements to repeating the movement(s) that may have caused the event. According to a recent theory of action discovery (Redgrave and Gurney, 2006), repetition allows the animal to represent those movements, and the outcome, as an action for later recruitment. The transition from variation to ...

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