The VMS operating system's CPU-dependent support of the VAX 6000 family of computers implements a complex and sophisticated set of error-handling routines. At the start of a VMS session, these routines help construct the necessary framework to support the I/O subsystem as the system begins to emerge. For much of a VMS session, these routines then lay dormant within the SYSLOA image. Periodicall...

Interactive television is a technology for delivering television programming on demand to households and busines ses . Rath er t han pa ss ive l y cho os ing f rom a predetermined set of programs at scheduled times, the viewer can request programming to be delivered to him individually on demand. This paper describes a system being developed by IBM that is in active use at customer trials. The ...

With many scientific disciplines represented by CDC scientists, the checklist was developed to have utility in conducting laboratory and basic science studies, epidemiologic studies, and behavioral and social science studies employing a variety of study designs. In using the checklist, investigators should select the items that apply to their types of studies. It is unlikely that any protocol w...

The leapfrog scheme is a commonly used second-order method for solving differential equations. Letting Z denote the state of the system, we compute the state at the next time step as Z (t + 1) = H (Z(t);Z(t 1); W), where t denotes a particular time step, H is the nonlinear timestepping operator, and W are parameters that are not time dependent. In this article, we show how the associativity of ...

The aerobic and anaerobic biodegradation of polyethylene glycols (PEGs) in a model wastewater was investigated employing sludge microbes from Xiamen Terylene plant. The effect of molecular weight (MW) on the aerobic/anaerobic biodegradation of PEGs was assessed by performing shake flasks/sealed flasks experiments, respectively, using organic model wastewater containing PEG 600, 6000 and 20,000....

The rapid-release mechanisms of standard extract from Ginkgo biloba leaf (EGb) in the polyethylene glycol (PEG) 6000 dispersions were investigated. The apparent equilibrium solubilities of the total flavone glycosides and the soluble solid materials of EGb increased linearly with the increasing concentrations of PEG 6000 solutions. In DSC curves, the peak, onset and endset temperatures of solid...