Interest in the analysis of DNA from ancient bone material (3) has increased greatly since it was first demonstrated with the amplification of mitochondrial DNA sequences from 5500-year-old human remains (1). Although the methods involved are not technically demanding, they have remained the preserve of specialist laboratories, primarily because of problems associated with the avoidance of cont...

A homicide with a captive bolt pistol (slaughterer's gun) is reported. The construction and the function of this "humane killer" as well as the typical patterns of injury are described.

We describ e a system that integrates real time com puter vision with a sensorless gripper to provide closed loop feedback control for grasping and manipulation tasks Many hand eye coordination skills can be thought of as sensory control loops where specialized reasoning has been embodied as a feedback or control path in the loop s construction Our framework cap tures the essence of these hand ...

OBJECTIVE To analyze the in vitro mechanical strength of the DHS-AF(®). METHODS We evaluated the in vitro resistance of a sliding bolt modified by the addition of a connector system, DHS-AF(®). RESULTS The changes performed by the authors allow the exchange by the surgeon of the sliding bolt without the need to remove the plate and disassemble the entire device to reposition it properly. We...

We evaluated the efficacy of the systemic insecticides dinotefuran, emamectin benzoate, fipronil, and imidacloprid for preventing attacks and brood production of southern pine engraver beetles (Coleoptera: Curculionidae: Scolytinae) and wood borers (Coleoptera: Cerambycidae) on standing, stressed trees and bolt sections of loblolly pine, Pinus taeda L., in eastern Texas. Emamectin benzoate sign...

The analytical approach used to develop a novel fatigue crack growth coupon for highly plastic stress field condition is presented in this paper. The flight hardware investigated is a large separation bolt that has a deep notch, which produces a large plastic zone at the notch root when highly loaded. Four test specimen configurations are analyzed in an attempt to match the elastic-plastic stre...

Strength tests on single lap joints with one adhesive (AV138/HV998) and layer thickness (0.5 mm), three peel stoppers (brass bolt, nylon bolt steel pin), four lengths (12.5 mm, 25 40 mm 100 mm) were conducted to investigate the effects of varying length stiffness peel-stop fasteners. Joint failure stress decreased, but force increased length. Furthermore, joint was higher stopper. The effect br...

In a segmental metro tunnel, it is widely observed that cracks, water leakage and other structural defects usually appear at joint section of smaller stiffness than main tunnel segment section. this study, 3D finite element analysis was conducted to simulate typical concrete explicitly using continuum elements, the performance model validated against laboratory tests available in literature. Si...

Traumatic intracranial aneurysms are one possible complication after penetrating brain injury. A 25-year-old man with a history of major depression presented with a crossbow bolt penetrating the head. On arrival, Glasgow Coma Scale score was E4V5M6, with no apparent neurological deficit. Computed tomography (CT) of the head showed the crossbow bolt passing near the corpus callosum, with surroun...

In this paper we present a new digital ultrasonic instrument for nondestructive inspection of rock bolts using guided waves. The Rock Bolt Tester (RBT) instrument applies long-range ultrasound to investigate bolt’s status, especially its grouting condition. RBT features an application tailored ultrasound probe that transmits high-energy, low frequency (below 100kHz) guided waves and is capable ...