Physical properties of grain dust derived from five grain types (soybean, rice, corn, wheat, and sorghum) were measured and reported. The grain dusts were obtained from dust collection systems of terminal grain handling facilities and were assumed to be representative of grain dust generated during the handling process. The physical properties reported were as follows: particle size distributio...

Dehydrated Mueller-Hinton agar from five different manufacturers was used to prepare plates containing 4% NaCl and 6 micrograms of oxacillin per ml to screen for oxacillin resistance in Staphylococcus aureus. A total of 137 isolates which included 109 oxacillin-resistant isolates obtained from at least eight geographic areas were examined. Results were compared to MICs obtained by using a stand...

We have studied 969 school children from Grammichele, a small town of 13 000 inhabitants 50 km from Catania. These children were screened for abnormal haemoglobins using a Coulter Counter and cellulose acetate electrophoresis. Structural analysis of haemoglobin was performed when required. The results are summarised in the table. We found seven children from seven different apparently unrelated...

Although Candida species are the fourth most common cause of nosocomial blood stream infections in the United States, early diagnostic tools for invasive candidemia are lacking. Due to an increasing rate of candidemia, a new screening system is needed to detect the Candida species in a timely manner. Here we describe a novel method of detection using a solid-state micro-scale pore similar to th...

Nanometer-thin coatings of polyhydroquinone (PHQ), which release and absorb protons upon oxidation and reduction, respectively, were tested for electrochemically induced anti-biofouling activity under the hypothesis that a dynamic pH environment would discourage fouling. Antifouling tests in artificial seawater using the marine, biofilm-forming bacterium Vibrio alginolyticus proved the coatings...

This article introduces a package that provides interactive and programmatic access to the FishBase repository. This package allows interaction with data on over 30 000 fish species in the rich statistical computing environment, R. This direct, scriptable interface to FishBase data enables better discovery and integration essential for large-scale comparative analyses. This article provides sev...

A 32x32 Sb-based Geiger-mode (GM) avalanche photodiode array, operating at 2 μm with three-dimensional imaging capability, is presented. The array is interfaced with a ROIC (readout integrated circuit) in which each pixel can detect a photon and record the arrival time. The hybridized unit for the 1000-element focal plane array, when operated at 77K with 1 V overbias range, shows an average dar...

since a few years a novel photon detector concept is being developed which is based on a matrix of densely packed small avalanche photo diodes operating in the limited Geiger mode with a common readout line. In this paper I review the operation principle of the detector concept. I discuss characteristics of the device as well as some of the ongoing developments and one example of a very promisi...

In the Rutherford-Geiger-Marsden experiments, alpha particles were streamed into a thin gold foil in an attempt to prove the plum pudding model of the atom. The results were one of the most striking examples of a discrepant event in scientific history. This demonstration provides the student with a visual sense of what Rutherford and his researchers expected to find, and then what they actually...