Hardwood sawmills traditionally saw logs in a manner that either orients sawlines parallel to the log central axis (straight sawing) or the log surface (allowing for taper). Sweep is characterized as uniform curvature along the entire length of a log. For logs with sweep, lumber yield losses from straight and taper sawing increase with increasing levels of sweep. Curve sawing logs with sweep wi...

A two-wire test strategy with simultaneous bidirectional data flow and an independent clock line enables very high site count low-cost wafer probing.

Permanent in vivo verification of IMRT photon beam profiles by a radiation detector with spatial resolution, positioned on the radiation entrance side of the patient, has not been clinically available so far. In this work we present the DAVID system, which is able to perform this quality assurance measurement while the patient is treated. The DAVID system is a flat, multi-wire transmission-type...

BACKGROUND Central venous catheter (CVC) placement under ECG guidance in the left thoracocervical area can lead to catheter misplacement. The aim of this study was to identify the cause and quantify the magnitude of this error. METHODS CVCs were sited in either the left or right internal jugular (IJ), subclavian (SC), or innominate (brachiocephalic) vein using the Seldinger technique and a to...

Wire line infrastructures can be considerably more expensive and time consuming to deploy than a wireless one. In addition, rural areas and developing countries frequently lack optical fiber or copper-wire infrastructures for broadband services and providers are unwilling to install the necessary equipment for regions with little profit potential. Wireless approaches could address this problem....

A closed-form solution for the common and differential modal currents induced on a pair of infinitely long parallel conductors by source, field coupled to power line, is derived. For lossy conductors, current consists continuous spectrum radiation modes (for mode) modified low-loss Sommerfeld–Goubau (SG) mode quasi-TEM mode. This model used investigate influence conductor microwave line communi...

We characterized the volume, weight and top surface area of naturally fallen logs in an oldgrowth redwood forest, and quantified conifer recruit densities on these logs and on the surrounding forest floor. We report significantly greater conifer recruit densities on log substrates as compared to the forest floor. Log substrate availability was calculated on a per hectare basis using the line-in...

This paper presents the details about calibration of defects; wear and broken wires by electromagnetic method in a wire rope used for hoisting of men and material in mines, aerial rope ways, lifts etc. Electromagnetic method of testing the wire ropes consists of powerful magnets to magnetize the wire rope, and sensors to detect the defects in the wire ropes. A typical instrument used in the inv...