Two new species of armored scale, Megacanthaspis hangzhouensis Wei & Feng, sp. n. and Megacanthaspis hainanensis Wei & Feng, sp. n. are described and illustrated from specimens collected from China. A key to adult female of Megacanthaspis species is provided.

Adult females of a new species of armored scale insect, Octaspidiotus shanghaiensis sp. n. are described and illustrated from specimens collected in China. A key is provided for the all described species of Octaspidiotus.

Ecologists seek better understanding of why species interactions change across space and time in natural communities. In streams, species effects on resources and community structure may change as physical characteristics of the stream environment change along drainage networks. We examined spatial and seasonal effects of armored grazers using a small-scale exclusion experiment that was replica...

The widespread use of sensitive assays for the detection of viral and cellular RNA sequences has created a need for stable, well-characterized controls and standards. We describe the development of a versatile, novel system for creating RNase-resistant RNA. "Armored RNA" is a complex of MS2 bacteriophage coat protein and RNA produced in Escherichia coli by the induction of an expression plasmid...

Portable instrumentation has been developed to measure halogen acid gases inside and around armored vehicles during fire suppression tests at Aberdeen Proving Ground. This technology is used to troubleshoot for leaks, conduct area sampling, and measure occupational exposure levels of toxic gases in air. A continuous denuder extracts the gases into an aqueous medium containing the appropriate io...

A new species of armored scale insect, Aulacaspis zunyiensissp. n. is described and illustrated from collections on cycads in China. A key to the Aulacaspis species known from China is provided.

In this paper we present seismic signature simulations using ground vibration inputs from highfidelity 3-D mechanical system models. Results for an M1A1 and T72 are discussed. By analyzing the simulated seismic signature data in conjunction with the spectral features associated with the vibrations of specific vehicle sprung and un-sprung components we are able to make unambiguous associations o...

T he process of research, development, and acquisition to procure military vehicles has historically been challenging for a variety of reasons. Sometimes, the difficulty lies in translating the threat (such as an enemy antitank guided missile) into a design criterion (such as a protection requirement of so many inches of armor plating). In other instances, problems have included a mismatch betw...

Real-life freight-distribution problems are characterized by a high degree of complexity. Although this kind of problem has been addressed broadly by the operation research community, models proposed in the literature are not able to completely describe real distribution problems, and while attempting to simplify and generalize the problem, they neglect aspects that could be of crucial importan...

In modern conditions, lightarmored vehicles with powerful weapon modules are widely used in the armies of different countries. These equipped small-caliber automatic cannons, which have a rate fire several hundred rounds per minute and high level recoil forces. Moreover, there tendencies towards an increase caliber weapons (and, accordingly, forces). Considering that rely on skeleton, has highe...