Genetic engineering: Rifkin strikes at corn this time

Forward Genetic Approach Strikes Gold: Cloning of a Mammalian ClockGene

macromolecular synthesis is clearly necessary for the workings of vertebrate circadian clocks, little is know Laboratory of Developmental Chronobiology Massachusetts General Hospital about the molecular nature of circadian rhythm generation or the structure of actual vertebrate clock genes. and Harvard Medical School Boston, Massachusetts 02114 However, this lack of molecular insight into verte...

An Engineering Economic Model of Corn Cleaning

An engineering economic model showed that corn cleaning can produce net benefits of $.01 to $.03 cents per bushel, provided that corn with an initial broken corn foreign material (BCFM) content of 3% or greater is stored for at least three months. The model, which included five operational costs and nine potential benefits, gave results in close agreement with USDA survey data. Capture of benef...

This Time of Dying

A must-read for those who think fl u pandemic preparedness is much ado about nothing, this fi rst novel by Reina James brings home the severity and plausibility of a fl u disaster. And without data, statistics, or comment, it makes a compelling case for progress on the matter of infl uenza, to ease suffering, prevent spread, and possibly eliminate the scourge. A series of journal entries beginn...

Mitochondrial plasmid: could this be the next hit for genetic engineering?

Modalities for Model Checking: Branching Time Logic Strikes Back

We consider automatic verification of finite state concurrent programs. The global state graph of such a program can be viewed as a finite (Kripke) structure, and a model checking algorithm can be given for determining if a given structure is a model of a specification expressed in a propositional temporal logic. In this paper, we present a unified approach for efficient model checking under a ...