Novel Method of Transient Spectroscopy in Laser Cavity
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Transient (computer programming)
Transient absorption (TA) spectroscopy has proved fundamental to our understanding of energy and charge transfer in biological systems, allowing measurements of photoactive proteins on sub-picosecond timescales. Recently, ultrafast TA spectroscopy has been applied in vivo, providing sub-picosecond measurements of photosynthetic light harvesting and electron transfer processes within living photosynthetic microorganisms. The analysis of the resultant data is hindered by the number of different photoactive pigments and the associated complexity of photoactive reaction schemes within living cells. Here we show how in vivo ultrafast TA spectroscopy can be applied to a diverse array of organisms from the tree of life, both photosynthetic and non-photosynthetic. We have developed a series of software tools for performing global, lifetime and target analysis of in vivo TA datasets. These advances establish in vivo TA spectroscopy as a versatile technique for studying energy and charge transfer in living systems.
Picosecond
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Transient (computer programming)
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Considering the current status that the electro-mechanical transient simulation and electromagnetic transient simulation are independent relatively and respectively in power system,and based on the actual requirements for both electro-mechanical transient and electromagnetic transient simulations,this paper proposes a data system for the conversion between electromechanical transient and electromagnetic transient sim-ulations based on PSS/E and EMT.The system establishes a contact between electromechanical transient and electromagnetic transient simulation with data conversion.The actual application of the system in Shanghai Power Grid suggests the system can convert the electromechanical transient data into electromagnetic transient data accurately.
Transient (computer programming)
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Abstract Based on electromechanical transient simulation data, an electromagnetic transient simulation model can be quickly generated through a computer program. However, electromechanical transient data are not sufficient to describe completely the corresponding electromagnetic transient simulation model. In view of this, the paper proposes an electromagnetic transient simulation model generation method that integrates multiple information sources. First, the data characteristics of electromechanical transient simulation software PSD-BPA and electromagnetic transient simulation software PSCAD/EMTDC are introduced. Then, considering the difference between electromechanical transient and electromagnetic transient model data, a method to quickly generate PSCAD/EMTDC simulation data is established. This method is based on the electromechanical transient simulation data, and takes into account those information which is not available in the electromechanical transient data but needed in the electromagnetic transient in the conversion process, so that the converted model is more detailed and accurate. Finally, this method is used to model and analyse an actual fault. The simulation results show that the method proposed in the paper is effective and credible.
Transient (computer programming)
Simulation software
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Photoconductivity
Transient (computer programming)
Dynamics
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Measurement principles and analysis of Turn-by-Turn beam position monitor system at Hefei Light Source (HLS) are presented in this paper. In emphases, several typical applications are presented here, which include the commissioning of upgraded injection system on HLS storage, monitoring of transientν transientν transientν transientν transientν transientν transientν transientν transientν transientν and damping time of storage ring, beam instability in injection, as well as experiments of low frequency feedback system. Precise analyses of experimental results offer some conclusions, which are consistent with theoretical expectations. The system plays an important role in study of beam instability and improvement of machine performance.
Transient (computer programming)
Turn (biochemistry)
Transient analysis
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Transient (computer programming)
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It is very difficult to study the multi-swingmulti-group transient stability of power system.To the large disturbance,In the paper the model and development of Branch Transient Potential Energy Method is introduced,and its application to assessing multi-swingmulti-group transient stability of power system is studied.The simulation of the multi-machine power system show the validation of Branch Transient Potential Energy Method in multi-swingmulti-group transient stability assessment.
Transient (computer programming)
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Transient (computer programming)
Transient analysis
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