The Direct DetectTM system, an infrared (IR)-based spectrometry system, represents an innovation in biomolecular quantitation. The key to this advance lies in a new membrane technology for preparing and presenting aqueous biological samples to make them compatible with infrared analysis. Built upon EMD Millipore’s extensive experience in membrane technology, it employs a hydrophilic polytetrafl...

We show that PMD degrades the transmission performance of an optical OFDM system which is based on direct-detection and single side-band transmission. Maximum PMD tolerance can be achieved applying polarization diversity together with polarization control. Introduction Optical transmission systems deploying orthogonal frequency division multiplexing (OFDM) have gained interest recently. Two pri...

OpenGL’s window system support for the X Window System explicitly allows implementations to support direct rendering of OpenGL commands to the graphics hardware. Rendering directly to the hardware avoids the overhead of packing and relaying protocol requests to the X server inherent in indirect rendering. The OpenGL implementation available for Silicon Graphics workstations supports direct rend...

A loudspeaker feedback system is built in this project. A class D switching amplifier and the loudspeaker are placed in a closed loop. The switching power amplifier is a simple pulse width modulator, but without the conventional output filter that is made up of expensive inductors and capacitors. The band-pass loudspeaker replaces the output filter. Feedback is achieved by an electret condenser...

The Direct Access File System (DAFS) is a distributed file system built on top of direct-access transports (DAT). Direct-access transports are characterized by using remote direct memory access (RDMA) for data transfer and user-level networking. The motivation behind the DAT-enabled distributed file system architecture is the reduction of the overhead on the I/O data path. The goal of this work...

introdouction:the study aimed to compare the accuracy of proximal caries detection by dental practitioners using two different systems, direct digital system and conventional films, under routine environmental conditions. materials and methods: eleven extracted human posterior teeth were mounted on wax frames and were exposed using the direct digital system and conventional films. seventy-four ...