Acid-Base Accounting (ABA) is an analytical procedure that provides values to help assess the acidor alkaline-producing potential of overburden rocks prior to coal mining. This procedure was developed at West Virginia University in the late 1960s. After the passage of laws requiring an assessment of surface mining on water quality, ABA became the preferred method to predict post-mining water qu...

We extracted chromosomes by micromanipulation from Melanoplus differentialis spermatocytes, producing metaphase spindles with only one or a few chromosomes instead of the usual complement of 23. Cells with various numbers of chromosomes were prepared for electron microscopy, and spindle microtubule length was measured. A constant increment of microtubule length was lost upon the removal of each...

Connolly, 1990). Crown rust is the most serious ryegrass fungal pathogen in these areas (Eagling and Clark, 1993), Perennial ryegrass (Lolium perenne L.) and white clover (Trifowith epidemics regularly occurring between spring and lium repens L.) are important pasture components in the higher rainfall areas of southeastern Australia. Crown rust (Puccinia coronata autumn. A preliminary study dem...

Computing Machine Models. To gauge the computational power of a family of mechanical computers, we will use a widely known abstract computational model known as the Turing Machine, defined in this section. The Turing Machine. The Turing machine model formulated by Alan Turing [1] was the first complete mathematical model of an abstract computing machine that possessed universal computing power....

Computing Machine Models. To gauge the computational power of a family of mechanical computers, we will use a widely known abstract computational model known as the Turing Machine, defined in this section. The Turing Machine. The Turing machine model formulated by Alan Turing [1] was the first complete mathematical model of an abstract computing machine that possessed universal computing power....

Computing Machine Models. To gauge the computational power of a family of mechanical computers, we will use a widely known abstract computational model known as the Turing Machine, defined in this section. The Turing Machine. The Turing machine model formulated by Alan Turing [1] was the first complete mathematical model of an abstract computing machine that possessed universal computing power....