In this study various species of captive marine fish and one species of squid were exposed to the noise from a single air gun. Six trials were conducted off the coast of Western Australia with each trial using a different noise exposure regime. Noise levels received by the animals ranged between 120 and 184 dB re 1 μPa(2).s (SEL). Behavioural observations of the fish and squid were made before,...

The superconducting RF photoinjector (SRF gun) operating with a 31⁄2-cell niobium cavity and Cs2Te photocathodes is installed at the ELBE radiation center. Since 2012 a new UV driver laser system developed by MBI has been installed for the SRF gun. It delivers CW or burst mode pulses with 13 MHz repetition rate or with reduced rates of 500, 200, and 100 kHz at an average UV laser power of about...

For the last several years, reported violent crime has been decreasing across the United States. New York City has been notable concerning this trend. Since 1991, while the number of violent crimes reported within the City has decreased significantly, violent crimes involving firearms, especially handguns, have decreased by an even greater percentage. But why? Some point to the New York City Po...

Biolistic transfection is a physical means of transfecting cells by bombarding tissue with high velocity DNA coated particles. We provide a detailed protocol for biolistic transfection of rat hippocampal slices, from the initial preparation of DNA coated bullets to the final shooting of the organotypic slice cultures using a gene gun. Gene gun transfection is an efficient and easy means of tran...

Penetrating craniocerebral injuries from nail gun use are rare. We describe a case of 10 self-inflicted nail gun injuries with intracranial penetrations. We also review the literature and discuss management strategies of such craniocerebral trauma. A 33-year-old male with a long-standing history of severe depression took a nail gun and sustained 10 penetrating intracranial injuries. Initial neu...

Problem: You have been asked to implement a new weapon that behaves something like a shot gun. It has a wide ange of effectiveness, but it is only effective at relatively small distances. Suppose that the end of the muzzle of the gun is located at a point p (in 3-dimensional space), and it has been aimed at a target point t (see Fig. 1(a)). The gun shoots a spray of pellets within angle θ the c...

The mass shooting at Sandy Hook elementary school on December 14, 2012 catalyzed a year of active debate and legislation on gun control in the United States. Social media hosted an active public discussion where people expressed their support and opposition to a variety of issues surrounding gun legislation. In this paper, we show how a contentbased analysis of Twitter data can provide insights...

BACKGROUND Gun pressurization in total knee arthroplasty (TKA) may result in better cement penetration than hand packing, leading to fewer tibial plate failures. We compared cement intrusion characteristics between vacuum mixing and gun pressurization versus hand mixing and packing in the proximal tibia among patients undergoing TKA. METHODS We analyzed 6-week radiographs from 77 consecutive ...

Recently, the Cepheids in the spiral galaxy IC 4182 have been in the spotlight due to their use as calibrators for th~ supern~va la d~sta~ce scale: In this process the distance to IC 4182 is obtained by applying the local PopulatIOn I perIod-lumInosity relatIOn to the IC 4182 Cepheid sample. But is it really appropriate to do so? W,e employ t~e technique of Fourier decomposition to compare the ...

This protocol describes how to prepare rat liver rough microsomes that contain undegraded membrane-bound polysomes and can function very well in an in vitro translation system. It uses endogenous ribonuclease inhibitor in all steps, avoiding pelleting rough microsomes in all steps and sacrificing good recovery.