Two-way digital driver/receiver uses one set of lines

Two-way /bilateral/ digital driver/receiver system using MOS circuits was designed for a multiprocess computer having several subsystems at relatively close locations. The system requires only a single set of communication lines between subsystems, thus achieving lower cost with increased reliability

Granular discharge rate for submerged hoppers

The discharge of spherical grains from a hole in the bottom of a right circular cylinder is measured with the entire system underwater. We find that the discharge rate depends on filling height, in contrast to the well-known case of dry non-cohesive grains. It is further surprising that the rate increases up to about twenty five percent, as the hopper empties and the granular pressure head decreases. For deep filling, where the discharge rate is constant, we measure the behavior as a function of both grain and hole diameters. The discharge rate scale is set by the product of hole area and the terminal falling speed of isolated grains. But there is a small-hole cutoff of about two and half grain diameters, which is larger than the analogous cutoff in the Beverloo equation for dry grains

High-temperature LM cathode ion thrusters Quarterly progress report, 5 Feb. - 4 May 1968

Poiseuille flow measurements for high temperature liquid metal cathode ion thruster

Our Town: A Heartland Lynching, A Haunted Town, and the Hidden History of White America

Review of: Our Town: A Heartland Lynching, a Haunted Town, and the Hidden History of White America, by Cynthia Carr

The Bellevue War: Mandate of Justice or Murder by Mob: A True — and Still Controversial — Story of Iowa as the Wild West

Review of: "The Bellevue War: Mandate of Justice or Murder by Mob? A True - and Still Controversial - Story of Iowa as the Wild West,"by Susan K. Lucke

The Catholic Church in Southwest Iowa

Review of: The Catholic Church in Southwest Iowa, by Steven M. Avella

Our Town: A Heartland Lynching, A Haunted Town, and the Hidden History of White America

Review of: "Our Town: A Heartland Lynching, a Haunted Town, and the Hidden History of White America," by Cynthia Carr