Instrument-related geometrical factors affecting the intensity in XPS and ARXPS experiments

2011 ◽  
Vol 184 (8-10) ◽  
pp. 487-500 ◽  
Author(s):  
A. Herrera-Gomez ◽  
F.S. Aguirre-Tostado ◽  
P.G. Mani-Gonzalez ◽  
M. Vazquez-Lepe ◽  
A. Sanchez-Martinez ◽  
...  
Keyword(s):  
Factors Affecting ◽  
Geometrical Factors

scholarly journals Darcy–Boussinesq Model of Cilia-Assisted Transport of a Non-Newtonian Magneto-Biofluid with Chemical Reactions

2020 ◽  
Vol 10 (3) ◽  
pp. 1137 ◽  
Author(s):  
Ali Ahmad Farooq ◽  
Zahir Shah ◽  
Poom Kumam ◽  
Ebraheem O. Alzahrani ◽  
Meshal Shutaywi ◽  
...  
Keyword(s):  
Chemical Reactions ◽  
Flow Rate ◽  
Volume Flow Rate ◽  
Vertical Channel ◽  
Boussinesq Model ◽  
Factors Affecting ◽  
Highly Nonlinear ◽  
The Difference ◽  
Geometrical Factors ◽  
Mixed Convective Flow

The model developed in this study presents a mathematical approach to the physiological transport of seminal liquid due to ciliary movements, which are attached with the lumen of the ductile efferent in the male reproductive system. The rheological properties of the seminal liquids were described using the Jeffrey liquid model. The problem described an electromagnetic mixed convective flow of a Jeffrey liquid through a vertical channel with heat and mass transfers. The effects of chemical reactions and the external heat generation were included in the formulation. The flow took place through an active porous medium (due to thick cilia mat and other deposits) and was influenced by the Lorentz magnetic force. Four basic conservation laws of mass, momentum, energy, and concentration were utilized in the mathematical modeling. These are highly nonlinear equations, which were simplified due to a physiologically valid approach known as LAT (lubrication approximation theory). Analytical solutions for temperature, concentration, and velocity profiles were evaluated. The expressions describing the pressure–volume flow rate relationships were also obtained. Analysis of various physical and geometrical factors affecting the pressure–volume (pumping) characteristics was also presented. One of the main findings of our study is that the difference between our calculated values of the flow rate and the estimated values of the flow rate in the ductile efferent was negligibly small. Moreover, our results can be implemented in the artificial cilia pumping systems in microchannels.

scholarly journals Assessment of the Dynamic Behavior of Beam-to-Column Connections in Steel Pallet Racks under Cyclic Load: Numerical Investigation

2018 ◽  
Vol 2018 ◽  
pp. 1-12
Author(s):  
Zhi-Jun Lyu ◽  
Meng Wu ◽  
YuXin Huang ◽  
YiMing Song ◽  
Xiong Cui
Keyword(s):  
Dynamic Behavior ◽  
Cyclic Load ◽  
Seismic Loads ◽  
Fe Modeling ◽  
Cyclic Tests ◽  
Factors Affecting ◽  
Simulation Based ◽  
Different Types ◽  
Geometrical Factors

Steel pallet racks (SPRs) are characterized by boltless beam-column connections (BCCs). The role of BCCs becomes more significant during hazardous conditions such as earthquakes. Due to the great number of beam-end connector types and member geometries, the accurate evaluation of their structural behavior, especially under seismic loads, seems to be very difficult to perform so far. In this paper, the authors present results of simulation based on cyclic tests on different types of industrial rack joints by the finite element (FE) modeling of connections. This paper mainly investigates the BCC geometrical factors affecting the dynamic behavior of braced racks. Design indications are consequently provided in order to guarantee a globally homogenous ductility among different BCC configurations under seismic actions.

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