Two interlaboratory surveys of urine nickel analyses were performed in which eight or nine urine samples were distributed to laboratories in seven nations for measurements of nickel concentrations by atomic absorption spectrometry. In both surveys, wide discrepancies were observed in the values for urine nickel concentrations that were obtained in different laboratories by various analytical me...

Optimization of drilling fluid parameters such as mud weight, salt concentration, and temperature is essential to alleviate instability problems during drilling through shale sections. The selection of suitable mud parameters can benefit from analyses that consider significant instability processes involved in shale-drilling–fluid interactions. This paper describes the development of analytical...

(Bio)chemical sensors are one of the most exciting fields in analytical chemistry today. The development of these analytical devices simplifies and miniaturizes the whole analytical process. Although the initial expectation of the massive incorporation of sensors in routine analytical work has been truncated to some extent, in many other cases analytical methods based on sensor technology have ...

This paper has provided a discussion on EM probe design for subhundredpicosecond pulses. Some preliminary experimental results and rough analytical spot size analyses are presented.

The importance of slope stability in civil engineering cannot be underestimated, as failure these structures can result significant damage to downstream infrastructure and property. In this study, we used the Bishop slice method, combining both an analytical approach a numerical using SLOPE/W module Geostudio 2018 R2 software. results obtained from two methods showed that increasing soil cohesi...

Energy and exergy (EnE) efficiencies are considered the most important parameters to compare performance of various thermal systems. In this paper, an analysis was carried out for EnE a flat plate solar collector (FPSC) using four different kinds nanofluids as flowing mediums, namely, Al2O3/water, MgO/water, TiO2/water, CuO/water, compared with water medium (traditional base fluid). The made na...