Modeling Groundwater Flow and Pollution (Theory and Applications of Transport in Porous Media) Review

Average Reviews:

(More customer reviews)This book presents theory and practice of groundwater and pollution flow simulation. It has thirteen chapters. Its first seven chapters contain theoretical information related to general porous media fluid flow along with mathematical models for flow in aquifers, seawater intrusion, unsaturated flow, and groundwater pollution. The last six chapters present numerical methods for solving the models developed in the theoretical chapters. There are special emphases for finite difference and finite element methods with BASIC`s programs for steady and unsteady pressure equations. It also contains chapters with BASIC's programs for convection-diffusion equations. This book is self-contained and it explains the most important deterministic techniques to simulate fluid flow in groundwater and pollution problems. It is a classic book in the subject and it deserves five starts.

Click Here to see more reviews about: Modeling Groundwater Flow and Pollution (Theory and Applications of Transport in Porous Media)

Get 28% OFF

Click here for more information about Modeling Groundwater Flow and Pollution (Theory and Applications of Transport in Porous Media)

Read More...

Hydrogeology and Groundwater Modeling, Second Edition Review

Average Reviews:

(More customer reviews)The author has made a great effort of presenting the subject matter in an easy to understand and read format. The text covers basic laboratory determination of hydrogeological paratmers to complex calculations and modeling. This book is great because there have been times when I have been working on a problem (effective poristy, density and saturation) and have been able to find an example of it in this book. The text covers one dimensional steady state flow, transient flow, flow nets etc.. Cooper Jacob method, drawdown, well efficiency and numeric groundwater flow modeling. I highly recommend this book. Full of alot of great information and examples/problem sets.

Click Here to see more reviews about: Hydrogeology and Groundwater Modeling, Second Edition

Coupling the basics of hygrogeology with analytical and numerical modeling methods, Hydrogeology and Groundwater Modeling, Second Edition provides detailed coverage of both theory and practice. Written by a leading hydrogeologist who has consulted for industry and environmental agencies and taught at major universities around the world, this unique book fills a gap in the groundwater hydrogeology literature. With more than 40 real-world examples, the book is a source for clear, easy-to-understand, and step-by-step quantitative groundwater evaluation and contaminant fate and transport analysis, from basic laboratory determination to complex analytical calculations and computer modeling. It provides more than 400 drawings, graphs, and photographs, and a variety of useful tables of all key groundwater parameters, as well as lucid, straightforward answers to common hydrogeological problems.Reflecting nearly ten years of new scholarship since the publication of the bestselling first edition, this second edition is wider in focus with added and updated examples, figures, and problems, yet still provides information in the author's trademark, user-friendly style. No other book offers such carefully selected examples and clear, elegantly explained solutions. The inclusion of step-by-step solutions to real problems builds a knowledge base for understanding and solving groundwater issues.

Get 4% OFF

Click here for more information about Hydrogeology and Groundwater Modeling, Second Edition

Read More...

Smithsonian Giant Volcano Review

Average Reviews:

(More customer reviews)The product description says: "Build and erupt a 'volcano' with our new dual mold system. Make the most realistic volcano ever. Eruption tablets create accurate volcanic simulations. A world of adventure and science is great. Detailed instructions are included."
The "dual mold" includes top and bottom shells that form a mold for the volcano - you "build" it by combining the supplied cement-like sand material with water in a mixing bowl that you provide. You then stir it to remove lumps for "1 to 2 minutes," i.e., stir fast! Then you pour the water/sand mix into the space between the top and bottom shells and wait for 15-18 minutes (you do this with the mold upside down). Then, carefully invert the mold and remove the top shell. Then you wait for 24 hours for the volcano to set up. The building process makes a fair mess, so be prepared for some clean up of the sand mix from your mixing bowl, etc.
The above is the building part. The resulting volcano seems to be fairly strong and can be reused, at least for a while.
The eruption part of this kit was an utter failure. The kit says to pour club soda into the volcano and then add the "eruption tablets." This is presumably an acid-base reaction to generate carbon dioxide bubbles. The tablets have a red dye in them. My experience was that there was utterly NO bubbles or eruption. There are about 30 tablets included (maybe less), and you're supposed to use 5 for each eruption. I started with 5 and nothing happened. Added 5 more and still no eruption.
At that point I changed plans and went with the tried-and-true method: add baking soda, liquid dishwashing soap, and McCormick Spice's red food coloring to the inside of the volcano, and then add white vinegar. Of course, that worked like a charm.
Overall, I think this would be a lousy gift because it does not live up to expectations, or indeed work at all! The only thing that kept me from giving this one star is that the volcano can be used for the tried-and-true baking soda and vinegar method. However, for the cost, it's not really worth it just for the volcano. I would buy a couple of blocks of modeling clay instead.

Click Here to see more reviews about: Smithsonian Giant Volcano

Recreate the spectacular sight of an erupting volcano with this kit, developed by a Smithsonian Volcanologist! -- First, build your own volcano, using volcano making compound around the volcanic plastic base. Then, using a bottle and tube system and special, non-toxic erupting mixture (lava), cause eruptions and control the flow of lava with hand pressure. Included are three different genuine volcanic rocks, safety goggles and instructions.

Click here for more information about Smithsonian Giant Volcano

Read More...