Before the adoption of an automated system for optimizing edging and trimming in hardwood mills, the performance of present manual systems must be evaluated to provide a basis for comparison. A study was made in which lumber values recovered in actual hardwood operations were compared to the output of a computer-based procedure for edging and trimming optimization. The optimization procedure wa...

I:U+ Abstract Length-sorted lumber is surfaced on one side t() 1.75-inch thickness, mechanically stacked 5 feet wide and 10 feet high on 1-1/4-inch-thick sticks, and continuously transported through a zone-controlled tunnel kiln at 8 ft./hr. t() yield 500,000 tbm of lumber dried t() 9 percent average MC per 168hour week. In the tunnel, the lumber is dried for 8 (possibly 10) hours at 270°F, con...

BACKGROUND Percutaneous endoscopic interlaminar discectomy (PEID), which poses advantages for certain types of herniated disc, is gaining wider acceptance in clinical practice. We retrospectively analyzed the efficacy of the PEID technique in treatment of calcified lumbar disc herniation. STUDY DESIGN A retrospective case-control study. SETTING University hospital in China. OBJECTIVE To e...

In the forest products manufacturing industry, recent price increases in the cost of high-quality lumber together with the reduced availability of this resource have forced manufacturers to utilize lower grade hardwood lumber in their manufacturing operations. This use of low quality lumber means that the labor involved in converting this lumber to usable parts is also increased because it take...

STUDY DESIGN  Retrospective cohort study. OBJECTIVE  To analyze the presence and clinical relevance of heterotopic ossification (HO) at 3 years mean follow-up. METHODS  Thirty patients suffering from cervical radiculopathy and/or myelopathy treated with anterior disc replacement (ADR) were studied. HO was classified using the McAfee grading system. Range of motion was measured from flexion ...

F OR ESTER S ROUTINELY ESTIM ATE THE economic potential of a standing forest resource as lumber. It is usual to consider the straightness and size of a tree to estimate gross recovery and the range of lumber products that might be produced. However, such estimates are usually subjective and depend on the knowledge and experience of the assessor. Several conversion modeling packages are availab...

Disc-hernia and spondylolisthesis are the major disorders related to vertebral column. Expert medical doctors examine the pelvis and lumbar spine shape and orientation to diagnose the disorder. However some shape and orientation parameters may be misleading and are unclear. Therefore recently the automatic diagnosis methods (classification methods) have been proposed to help medical doctors. Ho...

The green lumber products tend towards a state of equilibrium with the surrounding environment. The final target is the equilibrium moisture content (EMC). Whether is natural convection in the lumberyard or forced convection in the kiln drier, the road towards the final EMC consumes time and energy. The air drying operations (natural convection) are not an easy task for the drying management. T...

Abstract The aim of this is to evaluate the biomechanical performance double-level semirigid pedicle screw fixation and artificial intervertebral disc replacement in lumbar spine. Ti6Al4V CFR-PEEK material are used for replacement. In present study, carried out between L3-L4-L5 regions under application moment 6,8,10 Nm range motion compared during flexion, extension, right-left lateral bending...

STUDY DESIGN Lumber disc arthroplasty is a technological advancement that has occurred in the last decade to treat lumbar degenerative disk diseases. PURPOSE The aim of this retrospective study was to establish the impact and outcomes of managing patients with lumbar degenerative disk disease who have been treated with lumbar total disc arthroplasty (TDA). OVERVIEW OF LITERATURE Several stu...