دانلود کتاب مدل سازی واکنش های ژئوشیمیایی و بیوژئوشیمیایی

When in 1995 I sent my editor the typescript for the first edition of this book—by parcel post, of course—I remember thinking, “Well, I’ll never do that again!” Writing such a detailed, technical monograph had proved all-consuming. Lacking further insight I felt I could contribute, I was anxious to leave reaction modeling behind and try new things. And I did. The microbiological revolution swept over the geosciences shortly following the first edition’s debut. Colleagues and I quickly found a place for ourselves at the interface between aqueous geochemistry and environmental microbiology. Computers were traversing their own wild revolution, doubling and redoubling in capability on intervals measured in months. The work a privileged few of us were doing in the early 1990s using enormous, vastly expensive computers became possible at any scientist’s or engineer’s desk. Simulations that seemed out of reach became almost routine. A decade after its publication, as a result, the first edition no longer seemed complete. The modern geochemist needed to understand redox disequilibrium, the foundation of chemolithotrophic life. The kinetics of mineral dissolution and precipitation remained important, but the rates at which redox reactions proceed and at which microbes catalyze chemical transformation, and the dynamics of microbial communities seemed just as central to the field. As I prepared the first edition I suspected only a handful of my hardiest colleagues would care about the ins and outs of constructing reactive transport models of geochemical systems, an endeavor impractical for most. But microprocessors replaced supercomputers and an obscure field of study lurched into the mainstream. Buoyed by my editor’s enthusiasm, the second edition I had not expected to write emerged page by page, example by example. This time a mouse click sent the finished typescript, now ten chapters longer, on its way to publication.