Background: The cross-section ofthoracolumbar vertebral body is kidney-shaped with depressed posterior boundary.The anterior wall of the vertebral canal is sepa
Background: Hamstring (HS) autograft and bone-patellar tendon-bone allograft are the most common choice for reconstruction of anterior cruciate ligament (ACL).T
In order to study the law of nitrogen leaching losses from the paddy field under the condition of drainage, based on the theories of potential energy and solute
Yang’s (1996) sediment transport theory based on unit stream power is one of the most accurate theories, but in his equations the use of product of slope and c