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This book provides a unique coverage of the hydrology and water resources of Africa, including the neighbouring islands. The contents are covered in fourteen chapters. The volume contains a CD-ROM with raw meteorological, hydrometric and water quality data. Emphasis is laid on the components of the hydrological cycle; precipitation, evaporation and runoff of both land and insular Africa. The hydrologic characteristics of sixteen rivers and wadi basins of different sizes are presented and discussed. In addition, hydrology of lakes, and other wetlands and storage reservoirs are presented. Furthermore, the principal groundwater aquifers are reviewed. Last, but not least, the role of water resources in the overall development of Africa is highlighted. Audience: This volume should appeal to researchers and professionals working in the fields of civil and agricultural engineering, physical geography, African studies, and those interested in surface and groundwater resources in Africa.
Basic to Advanced NX6 Modeling, Drafting and Assemblies is the newly revised version of our previous CAD training textbooks. We have greatly expanded the content, detail, and exercises included in this edition. Topics include: Synchronous and Master Modeling; Fundamental and Intermediate Curves; Editing Entities; Design, Reference, Surface and Detail Features; Sheet Metal Features; and Injection-Molded Parts and Castings. Using NX6 is like playing a piano. In the same way that chords are as important as individual notes, NX commands are far more powerful when used in concert with others. Our book makes an effort to show not only the details of the most important commands, but the powerful combinations that we have used to bring about excellent designs. This manual teaches you the basic modeling, assemblies, and drafting functionality of NX6.