Determination of the Recombination Velocity on Unequal Surfaces of Silicon Wafers from Two-Spectrum Excited Quasi-Steady-State Photoconductance

2017 ◽  
Vol 6 (7) ◽  
pp. N97-N103 ◽  
Author(s):  
Yi Wei ◽  
Chengyuan Song ◽  
Ping Li ◽  
Xin Tan ◽  
Yonghai Yuan ◽  
...  
Keyword(s):  
Steady State ◽  
Silicon Wafers ◽  
Quasi Steady State ◽  
Recombination Velocity

A Graphical Method for Storage Coefficient Determination from Quasi-Steady State Flow Data

1996 ◽  
Vol 27 (4) ◽  
pp. 247-254 ◽  
Author(s):  
Zekâi Şen
Keyword(s):  
Steady State ◽  
Graphical Method ◽  
Pumping Test ◽  
Quasi Steady State ◽  
Flow Data ◽  
Steady State Flow ◽  
Storage Coefficient ◽  
State Flow ◽  
Aquifer Test

A simple, approximate but practical graphical method is proposed for estimating the storage coefficient independently from the transmissivity value, provided that quasi-steady state flow data are available from a pumping test. In the past, quasi-steady state flow distance-drawdown data have been used for the determination of transmissivity only. The method is applicable to confined and leaky aquifers. The application of the method has been performed for various aquifer test data available in the groundwater literature. The results are within the practical limits of approximation compared with the unsteady state flow solutions.

Minority carrier lifetime in silicon wafers from quasi-steady-state photoluminescence

2010 ◽  
Vol 97 (9) ◽  
pp. 092109 ◽  
Author(s):  
J. A. Giesecke ◽  
M. C. Schubert ◽  
D. Walter ◽  
W. Warta
Keyword(s):  
Steady State ◽  
Carrier Lifetime ◽  
Minority Carrier ◽  
Minority Carrier Lifetime ◽  
Silicon Wafers ◽  
Quasi Steady State

The experimental determination of trajectories in geometrically similar plastic flows

1978 ◽  
Vol 13 (1) ◽  
pp. 29-34 ◽  
Author(s):  
R N Roth
Keyword(s):  
Steady State ◽  
Experimental Determination ◽  
Experimental Method ◽  
Quasi Steady State ◽  
Experimental Accuracy ◽  
Geometric Similarity ◽  
Orthogonal Grid ◽  
Wedge Indentation ◽  
Strain Wedge

A new experimental method is presented for determining trajectories of flow for non-steady-state processes which exhibit geometric similarity (quasi-steady-state processes (1)∗). One process that is normally regarded as quasi-steady-state (plane strain wedge indentation) is investigated using this method. It is shown that this process satisfies the requirements of geometric similarity within experimental accuracy. Results are presented for wedge angles of 30°, 60° and 90° and a range of indentation depths up to approximately 3 mm. Finally, it is suggested how this method can be combined with well-known orthogonal-grid techniques to provide information for the calculation of effective strains throughout the deforming region.

Is Environmental CAPE Important in the Determination of Maximum Possible Hurricane Intensity?

2005 ◽  
Vol 62 (2) ◽  
pp. 542-550 ◽  
Author(s):  
John Persing ◽  
Michael T. Montgomery
Keyword(s):  
Steady State ◽  
Convective Available Potential Energy ◽  
Sea Surface ◽  
Quasi Steady State ◽  
Hurricane Intensity ◽  
State Behavior ◽  
Surface Exchange ◽  
Steady State Behavior

Abstract In numerical simulations using an axisymmetric, cloud-resolving hurricane model, hurricane intensity shows quasi-steady-state behavior. This quasi-steady intensity is interpreted as the maximum possible intensity (MPI) of the model. Within the literature, numerical demonstrations have confirmed theoretically anticipated influences on hurricane intensity such as sea surface temperature, outflow temperature, and surface exchange coefficients of momentum and enthalpy. Here these investigations are extended by considering the role of environmental convective available potential energy (CAPE) on hurricane intensity. It is found that environmental CAPE (independent of changes to the outflow level) has no significant influence on numerically simulated maximum hurricane intensity. Within this framework, MPI theories that are sensitive to environmental CAPE should be discarded.

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