The Brookhaven Accelerator Test Facility (ATF) consists of a 50-MeV/c electron linac and a high-brightness RF-gun both operating at 2856 MHi. An extremely short (a few picoseconds) electron pulse with a low transverse emittance is generated by the RF-gun. In order to preserve both longitudinal and transverse emittances, great care must be taken in transporting the election beam from the RF-gun ...

Gun rights activists in the United States frequently argue that the right to bear arms, as guaranteed by the Second Amendment, can help deter crime. Advocates of gun control usually respond that €rearm prevalence contributes positively to violent crime rates. In this paper, we provide quasi-experimental evidence that a positive and unexpected gun demand shock led to an increase in murder rates....

In addition to their contribution to metabolism, chloroplasts emit signals that influence the expression of nuclear genes that contribute to numerous plastidic and extraplastidic processes. Plastid-to-nucleus signalling optimizes chloroplast function, regulates growth and development, and affects responses to environmental cues. An incomplete list of plastid signals is available and particular ...

A survey was performed in order to determine the infection status of the metacercariae of heterophyid fluke in two goby species, Boleophthalmus pectinirostris and Scartelaos sp., collected from Gangjin-gun, and Shinangun, Sooncheon-shi, Jeollanam-do, Republic of Korea. A total of three metacercariae of Heterophyopsis continua was found in only one B. pectinirostris (10.0%) from Gangjin-gun. Het...

PURPOSE To describe a case of trans-orbital intra-cranial air gun injury with a discussion on air gun related morbidity and mortality. METHODS Case report and literature review. RESULTS The air gun pellet travelled through the orbit without penetrating the globe. It passed into the middle cranial fossa through the superior orbital fissure and lodged in the temporal lobe. The patient was man...

The Advanced Photon Source (APS) has a thermioniccathode rf gun system capable of providing beam to the APS linac. The gun system consists of a 1.6-cell thermionic-cathode rf gun, a fast kicker for beam current control, and an alpha magnet for bunch compression and injection into the APS linac line. This system is intended for use both as an injector for positron creation, and as a first beam s...

We tested whether interacting with a gun increased testosterone levels and later aggressive behavior. Thirty male college students provided a saliva sample (for testosterone assay), interacted with either a gun or a children's toy for 15 min, and then provided another saliva sample. Next, subjects added as much hot sauce as they wanted to a cup of water they believed another subject would have ...