Anterior midtibial stress fractures are an uncommon but difficult entity for the sports medicine physician. When a transverse radiolucent line is visible in the anterior tibial cortex ("the dreaded black line"), the problem takes on the characteristics of a nonunion and rarely responds to conservative treatment. We recommend taking a more aggressive approach with the use of electrical stimulati...

Abstract The empirical GIN (grouting intensity number) method is one of the most popular methods for structural stabilization and increasingly used in many projects. concept this to limit combination pressure volume injected a specific grouting number order control energy induced rock fractures avoid heaving. In ensure water tightness foundation Memve’ele hydroelectric dam, treatment by was imp...

Abstract Understanding the stress state before and after an earthquake is essential to study how on faults evolves during seismic cycle. This integrates wellbore failure analysis, laboratory experiments, edge dislocation model Chi‐Chi earthquake. The post‐earthquake in‐situ observed along boreholes of Taiwan Chelungpu‐fault Drilling Project (TCDP) heterogeneous due lithological variations. Alon...

Unconventional natural gas resources offer an opportunity to access a relatively clean fossil fuel that could potentially lead to energy independence for some countries. Horizontal drilling and hydraulic fracturing make the extraction of tightly bound natural gas from shale formations economically feasible. These technologies are not free from environmental risks, however, especially those rela...

Knowledge of the in situ stress field of the Australian continent has increased greatly since compilation of the World Stress Map in 1992, principally by analysis of borehole breakouts and drilling-induced tensile fractures in petroleum wells. Stress orientations are variable across the Australian continent as a whole. However, within 15 of 16 individual stress provinces defined in the Australi...

A century ago, in 1909, Martin Kirschner (1879-1942) introduced a smooth pin, presently known as the Kirschner wire (K-wire). The K-wire was initially used for skeletal traction and is now currently used for many different goals. The development of the K-wire and its insertion devices were mainly influenced by the change in operative goals and by the introduction of antibiotics. The first versi...

Rotational drilling was a revolution in drilling technology. It made the drilling process more efficient and faster and more depth of well could be achieved through rotation method. Besides all of its advantages, the rotation approach induced some problems like pipe sticking and downhole cleaning to the drilling procedure. Hole cleaning and reduction of torque and drag seems to be vital in incl...

Headless screws are favored for internal fixation in the treatment of displaced or unstable small bone (e.g., Scaphoid) fractures, because they are embedded below the articular surface of the bone, reducing tissue irritation and immobilization. Compression plays an important role in fracture stability, maintaining gap reduction and also accelerating the healing of cancellous bone [1]. There are...

Abstract— Due to the superior physical and mechanical properties Glass fiber-reinforced (GFRP) composite materials are very attractive for applications like aerospace and air craft structural components. This results a large number of research papers on machining of these composite laminates. Out of all the machining operations, most commonly used operation is drilling. However, drilling operat...

OBJECTIVES This study aims to investigate the efficacy of screw length measurement through drilling technique on the reduction of intraarticular screw penetration and fluoroscopy time in osteosynthesis of proximal humerus fractures. PATIENTS AND METHODS Between January 2008 and June 2012, 98 patients (34 males, 64 females; mean age 64.4 years; range 35 to 81 years) who underwent osteosynthesi...