Following recent shootings in the USA, a debate has erupted, one side favoring stricter gun control, the other promoting protection through more weapons. We provide a scientific foundation to inform this debate, based on mathematical, epidemiological models that quantify the dependence of firearmrelated death rates of people on gun policies. We assume a shooter attacking a single individual or ...

An improved design of the buffalo gun, incorporating hole drilling and shooting into one operation with almost total blast containment, provided nearly 50 percent more recordable seismic signal than the traditional buffalo gun. The ‘auger gun’ is designed to optimize field efficiency, source couple, and safety. The auger gun consists of three main parts: power source, auger/screw, and modified ...

Scholars and public health officials alike have expressed significant concern over the dramatic growth in suicide among young Black males. Work in this area has focused primarily on the 1980s and early 1990s as key evidence of this concern. In the current study, we use a longer time series from 1982 to 2001 to examine exactly what these suicide trends look like as well as how and why they vary ...

a 15- year-old boy with history of bb gun injury to his left eye was referred to our center. his visual acuity was no light perception in the left eye. ocular findings were severe proptosis, conjunctival injection, and conjunctival vascular tortuosity. fundus examination revealed an extensive inferior chorioretinal scar compatible with chorioretinitis sclopetaria. a distinct bruit was detected ...

The electromagnetic powder deposition (EPD) system employs high velocity gas flow to accelerate powder material to conditions required for high strength plating. The gas flow, however, is not continuous; rather it consists of bursts generated by an electromagnetic railgun and pulsed power system. Each gas burst is created by a high pressure plasma arc which fills a transverse section of the gun...

This year, 2004, will see political realignments that will affect gun-owner rights for years to come. The current Bush administration has been a period of inertia in terms of advancing new controls, but this is largely due to the administration being distracted by the War on Terror. During his campaign for the presidency in 2000, Bush favored extending the “assault-weapons” ban of 1994 that sun...

A new method based on a light-gas gun has been proposed to synthesize Nb-Al alloys, and recovery capsule investigated. The copper-coated sample is accessible after shock wave loading. In this paper, we successfully which are high-temperature structural materials. X-ray diffraction employed clarify the characteristics of compounds impact, simulation diffractions structure. detail, tetragonal NbA...