Jim Brennan – författare

Written by one of the world''s foremost authorities on pumps, this first volume in Gulf Publishing Company''s Gulf Pump Guides series covers the design, application and troubleshooting for progressing cavity pumps, downhole pumps and mudmotors. There is no other volume offering a more comprehensive, easy-to-understand and hands-on coverage of these types of pumps. As they become more and more widely used in the petrochemical industry and other industries, knowledge of their design and application will become increasingly more important for the engineer.

Take the mystery out of Common Core math!The Common Core, a new set of national educational standards, has been adopted by 45 states across the nation. But you may be having a hard time understanding what your kids are bringing home from school. If you want to help your children with their homework, you need to learn these new methods, which focus on critical thinking and conceptual understanding.With the help of an experienced math teacher, you'll learn:What your child will be learning in grades K–5The multiple new ways to look at math problemsThe rationale behind the Common Core math standardsHow to help your child with homework and studyingWith easy-to-understand examples, problem-solving tips, and lots of practice exercises, The Everything Parent's Guide to Common Core Math: Grades K–5 will give you the confidence you need to help your kids meet the mathematical expectations for their grade level and excel at school.