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Objectives: To report the development and validation of a scoring system, the Guy's stone score, to grade the complexity of percutaneous nephrolithotomy (PCNL). Currently, no standardized method is available to predict the stonefree rate after PCNL. Methods: The Guy's stone score was developed through a combination of expert opinion, published data review, and iterative testing.

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Shop the Scholastic Teachers Store for books, lesson plans, guides, classroom supplies and more. Shop by grade, subject or format to ensure your students have the resources they need!

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Taper point shape tip, diamond coated head. Can be installed on the electronic grinder, hanging mill and hand electric drill (not included here). Used for sculpturing, dressing, precision grinding and internal grinding carbide in ceramic, glass, precious stone, alloy and many other abrasive materials.

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Tapping sticks together. Everybody thought that he (or she) Was very, very clever. Yankee Doodle keep it up, Yankee Doodle Dandy. Mind the music and your step, And keep your sticks handy. Jean Warren Adapted Traditional. Let your children take turns pretending to Ride into town playing their tapping sticks, While everyone sings about them.

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 · From the Spy Kids trilogy to Nancy Drew, kids love adventure, secrets, and mystery! Try these 7 secret spy codes for kids: Morse code, pigpen, phonetic alphabet, tap code, substitution ciphers, letters for numbers, and American sign language. These codes can work for a variety of ages. They can be made easier for younger students, and more ...

Tapper Stone For Chil Grinding

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ANSI. American National Standards Institute

USA. Federal institute, promoting development and appliion of standardization in the manufacturing and service industries. Web site offers news, articles, online standards store and up to date information about national and international standardization activities.