AIM This report attempts to illustrate the positive impact on the quality of dialysis water produced over a 16-year period through the progressive optimization of technological procedures. METHODS Fundamental steps included the following: elimination of polyvinyl chloride (PVC), periodical controls, introduction of stainless steel and/or polyethylene polymer and substitution of single-pass re...

Mollenberg-Betz was founded in 1910 by Henry J. Mollenberg and Jacob Betz as a machine shop serving nearby shipping, steel mills, and other industries. Early on, the founders were asked to design and install a refrigeration system for a dairy, and for several decades the company designed and manufactured custom refrigeration systems for a variety of industrial and commercial customers. During t...

In delta areas the land is protected from floods and high tides by dikes. In general these are constructed of impervious clays and built on a sandy aquifer as subsoil. Such structures are vulnerable to an erosion effect called piping. The actual word 'piping' refers to the development of shallow channels in the sand below the dike, which begins at the downstream side of the structure. Here ofte...

In the process of piping development, sediment carried by seepage causes change porosity and then permeability coefficient. Therefore, belongs to muddy water (i.e., unstable seepage). Based on theory seepage, new control equation model is established. The generation mechanism development for white fine sand gravel are explored. advantages discussed. results show that not only simpler in form bu...

We explore the limits of in situ resource utilization (ISRU) on Moon to maximize living off land by building lunar bases from material. adopt philosophy indigenous peoples who excelled sustainability. are interested leveraging resources manufacture an entire base such a fashion that is fully sustainable and minimizes supplies required Earth. A range metals, ceramics volatiles can be extracted m...

Recently, the U.S. nuclear industry has proposed replacing current volumetric and/or surface examinations of certain components in commercial nuclear power plants, as required by the American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section XI, “Inservice Inspection of Nuclear Power Plant Components,” with a simpler visual testing (VT) method. The advantages of VT are tha...

One of the key design parameters to a process plant with large capacity is the risk of AIV (Acoustically Induced Vibration) on the flare piping system. AIV is a piping vibration phenomenon exhibiting high frequencies caused by large acoustic power generated by the pressure drop across a PRV (Pressure Relief Valve). The evaluation method for susceptibility of piping to AIV fatigue failure was fi...