hysteresis has been widely recognized in the soil water relationship. in this paper, a detailed review of hysteresis was performed in relation to its models. so far, different models have been suggested to describe hysteresis in the water retention curve (wrc) that could be categorized into two main groups: conceptual and empirical models. the models in the first group are based on the domain t...

"This paper was the result of a need for thermodynamic data on several hydrocarbons. I was a member of the research staff of Humble Oil & Refining Co. and had been requested to evaluate a process that seemed to have some promise of commercial application. In order to do this, I needed enthalpies and entropies of several compounds, mainly hydrocarbons. However, to my disappointment some of these...

A novel assessment program was implemented in an upper level mathematical modelling subject for a small group of advanced undergraduate students of applied mathematics and engineering. The students were all enrolled in undergraduate degree programs at the selective private colleges, Harvey Mudd College and Pitzer College, in California. The subject itself was labelled Mathematics and Sport and ...

BACKGROUND Youth from the city of San Bernardino, California, launched a community organizing campaign to develop policy changes to address conditions of inter-racial violence in their community. Pitzer College students collaborated with the high school youth organizers in a community-based participatory research (CBPR) project to study violence and racial conflict at local high schools. OBJE...

in the present work a two dimensional numerical investigation of steam flows in a turbine blade passage is performed. a finite volume approach has been used and the pressure–velocity coupling is resolved using the simple algorithm. the purpose of this paper is to find that one of the used turbulent models is better for this kind of studies. a structured mesh arrangement with boundary layer mesh...

Abstract Gypsum crystals are found at the well perforation of observation Ktzi 202 test site for CO 2 storage Ketzin, Germany. XRD analysis confirms pure gypsum. Fluid samples before and after injection analyzed. Geochemical modeling is conducted to identify mechanisms that lead gypsum formation. The carried out with PHREEQC Pitzer database due high salinity up 5 mol per kg water. Due their sig...

in this research between 3-dimensional and axisymmetric modeling for movement of nano-particles in passing through a aerodynamic lens, and also between these models and famous model of wang & liu was compared. for this purpose, output of nano-particles penetration, divergence angel, and nano-particle velocity with wang & liu model was compared. geometrical model used for aerodynamic lens compar...

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