OBJECTIVE The purpose of this work was to establish a low-cost device for simple positioning of several small animals within a whole-body PET scanner. METHODS The device was designed as a stackable shelf for 3 x 3 animals, similar to a stackable shelf for wine bottles. It was constructed from ordinary PVC drain pipe and acrylic panes. RESULTS The shelf simplified accurate and reproducible p...

This paper presents an integrated multi-attribute decision-making (MADM) approach to aid selection of commercially available materials in the context of sustainable design. The MADM couples grey relational analysis (GRA) with an analytic hierarchy process (AHP) to rank alternative materials in terms of their economic, environmental, and social performance. AHP is used to determine the correspon...

PVC-441 murine leukemia virus (MuLV) is a member of the PVC group of Friend MuLV (F-MuLV)-derived neuropathogenic retroviruses. In order to determine the molecular basis for the difference in neuropathogenicity between PVC-441 and the previously characterized PVC-211 MuLVs, the entire nucleotide sequence of PVC-441 MuLV was determined and compared with those of PVC-211 and F-MuLV. The results s...

A new monitoring approach for detecting, locating, and quantifying structurally weak reaches of steel-lined pressure tunnels and shafts is presented. These reaches arise from local deterioration of the backfill concrete and the rock mass surrounding the liner. The change of wave speed generated by the weakening of the radial-liner supports creates reflection boundaries for the incident pressure...

The chemical content of water pH, mineralization, alkalinity, hardness, calcium and magnesium compounds, carbon dioxide free provide guidance about buffering capacity of water. Therefore, if the mineralization and pH is low, the water is aggressive towards the materials used in manufacturing pipes concrete, steel, HDPE, PVC, PAX. If the mineralization is high, the pH is high, too and the water ...

Abstract Vertical agriculture in urban areas is a new phenomenon where interest needed order to develop. The objective of the research develop tower system vertical farming technique. In this research, could produce 624 plants. This made using PVC pipe with 26 holes per tower. Each set towers equipped an irrigation system, namely water pump drain nutrient pipe. way monitoring works that ESP 32 ...