Services: Modifications, Calculations.RETC Downloads (installation program and/or manual).PC-Progress provides the following free support services for this software: The RETC is available as a public domain program. We refer the RETC users to the technical manual ( Download PDF, 2.1Mb). Since RETC is such a simple program (which people should be able to use without help), we have decided not to put an effort in converting the help into a new help formats (e.g., chm, html, xml). Microsoft decided not to support the hlp format in its latest versions of Windows (Vista, 7, 10 see link). Online Help: The RETC online help has been written in the hlp format. The RETC software was designed for Windows XP and we do not guarantee its compatibility with newer Windows systems (e.g., Win10, 64 bit) Intel Pentium or higher processor, 16 Mb RAM, hard disk with at least 20 Mb free disk space, VGA graphics (High Color recommended), MS Windows 95, 98, NT, 2000, XP A listing of the source code is also provided. The program comes with a user manual giving detailed information about the computer program along with instructions for data input preparation and listings of sample input and output files. Several examples are presented to illustrate a variety of program options. The program also permits one to fit analytical functions simultaneously to observed water retention and hydraulic conductivity data. The RETC program may be used to predict the hydraulic conductivity from observed soil water retention data assuming that one observed conductivity value (not necessarily at saturation) is available. A brief review is also given of the nonlinear least-squares parameter optimization method used for estimating the unknown coefficients in the hydraulic models. To represent the soil water retention curve, and the theoretical pore-size distribution models of Mualem (1976) and Burdine (1953) to predict the unsaturated hydraulic conductivity function from observed soil water retention data The program comes with a manual which gives a detailed discussion of the different analytical expressions used for quantifying the soil water retention and hydraulic conductivity functions. the dual-permeability model of Durner (1994).the lognormal distribution model of Kosugi (1996), and.The program uses the parametric models of The Exciting Rise of 12 Retech Corp (OTCMKTS: RETC) Daniel McCarthy - Octo12 Retech Corp (OTCMKTS: RETC) is making a highly explosive move up on accelerting volume in recent days from a start point of 0.0026. These hydraulic properties are key parameters in any quantitative description of water flow into and through the unsaturated zone of soils. RETC Main Window - Input data Output - Soil Hydraulic Properties RETC is a computer program which may be used to analyze the soil water retention and hydraulic conductivity functions of unsaturated soils. Salinity Laboratory, USDA, ARS, Riverside, California. The RETC Code for Quantifying the Hydraulic Functions of Unsaturated Soils, Version 1.0.
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