OBJECTIVE To compare the suitability of CO2 laser with steel instruments for margin excision in transoral laser microsurgery. METHODS Prospective randomized blinded study. Patients with glottic cancer undergoing laser resection were randomized to margin excision by either steel instruments or CO2 laser. Margins were analyzed for size, interpretability and degree of artifact by a pathologist w...

We present an all solid-state narrow linewidth laser source emitting 670mW output power at 671 nm delivered in a diffraction-limited beam. The source is based on a frequency-doubled diode-endpumped ring laser operating on the F 3/2 → I13/2 transition in Nd:YVO4. By using periodically-poled potassium titanyl phosphate (ppKTP) in an external buildup cavity, doubling efficiencies of up to 86% are ...

This paper deals with the improvement of fatigue life of AISI 1040 steel components by using a High Power Diode Laser (HPDL). First, the meaningfulness of each operational parameter was assessed by varying the experimental laser power and scan speed. After laser treatment, fatigue tests were performed to investigate the influence of laser processing parameters on the material resistance. The fa...

Laser range data acquired from a helicopter are evaluated in terms of the information that can be derived from them and the accuracy. The objective is to study the suitability of laser data to generate a DSM for road planning and design in The Netherlands. The conclusion is that high-density laser measurements allow the reconstruction of the terrain relief with the required accuracy. Nonetheles...

In recent years, methods of fuzzy reasoning have been successfully developed for land evaluation. The accuracy of such land evaluation depends on the quality of weighing land characteristics with respect to their effects on crop production. This paper presents a spatially-based model of land suitability analysis. The main purposes were to (1) establish land suitability indices for irrigated whe...

In the broadest sense, the term telework refers to organizational work [email protected] outside of the normal organizational confines of space and time, augmented by computer and communications technology. While most of the interest in telework has been confined to “telecommuting” or working from home, very little research has been done on the other-forms of telework. Beyond telecommuting, this paper ...

Field Station Fabrikschleichach, Glashuettenstrasse 5, 96181 Rauhenebrach, Germany UFZ – Centre for Environmental Research Leipzig-Halle, Dept. of Conservation Biology, Permoserstr. 15, 04318 Leipzig, Germany IBE, Landscape Ecology Group, Carl von Ossietzky University of Oldenburg, PO Box 2503, 26111 Oldenburg, Germany UFZ – Centre for Environmental Research Leipzig-Halle, Dept. of Community Ec...

The usefulness ofemail has been tempered by its role in the widespread distribution ofspam and malicious content. Security solutions have .focused on filtering out malicious payloads and weblinksfrom email; the potential dangers of email go past these boundaries: harmless-looking emails can carry dangerous, hidden botnet content. In this paper, we evaluate the suitability ofemail communicationf...