C. Durward Rogers

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The instability of RNA in solutions during storage and travel is an impediment to its utilization in routine diagnostics. A robust and simple approach to the problem of RNA protection and processing is offered by storage of RNA desiccated with processing procedures that do not solublize the RNA until the beginning of reverse transcription. The feasibility(More)
The soil dwelling larvae of the wheat bulb fly (Delia coarctata, Fallén) can cause damage to a number of cereal crops. Monitoring of the oviposition of this pest is important to allow forecasts of larval attack after the overwintering period, allowing suitable management practices to be implemented. However, little is known about the population dynamics of(More)
This paper examines the use of bacteria killed on blood-storage paper as templates (ghosts) and takes, as an example, the PCR ribotyping (amplification of the intergenic spacer regions between the 16S and 23S ribosomal RNA genes) of bacteria as described by Kostman et al. (J. Infect. Dis. 171, 204-208, 1995). All procedures have been particularly designed(More)
<italic>This paper describes the</italic> VIVID <italic>(Vertically Integrated VLSI Design) System developed at the Microelectronics Center of North Carolina. The system is based on a symbolic, virtual-grid design methodology that greatly reduces the design time for custom VLSI circuits. This methodology has made it possible to provide, in a single(More)
The Mediterranean fruit fly Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) (medfly) is a polyphagous pest of global economic importance. This study tested the suitability of two different adhesive powders, EntostatTM and an adhesive metal powder, as insecticide carriers for use in a lure and kill pest control system, that would allow the(More)
A VLSI design system called VIVID is the heart of a newly developed, vertically integrated design environment. This environment provides support for all phases of design from high-level system specification through on-site fabrication to construction of prototype systems. Key features already Implemented include: the use of a circuit description language at(More)
In the past, Virtual-Grid Compactors have not been well received because they generated sparse layouts. In analyzing this problem, we found three major areas where improvements could be made: breaking the virtual-grid lines into segments; decoupling the placement of non-interacting layers; and eliminating the centered nature of elements. The result is a(More)
A research organization or graphics house often has a need for custom pictures for presentations or other purposes. These pictures may be prohibitively expensive, if not impossible to create, if they are produced by a commercial art firm. For groups that have such a need, an in-house computer-controlled camera may be a solution. To develop a quality system,(More)
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