18 This “Perspective” reflects our observations of recent accomplishments made using SIFT19 MS. Only brief descriptions are given of SIFT-MS as an analytical method and of the recent 20 extensions to the underpinning analytical ion chemistry required to realise more robust 21 analyses. The challenge of breath analysis is given special attention because, when achieved, 22 it renders analysis of ...

Chemical and isotopic analyses of geothermal water samples must meet certain levels of accuracy and reliability to be useful for identifying geochemical processes in hydrothermal systems. Quality control is largely a concern for the analytical laboratory, but the geochemist or reservoir engineer using the chemical data must also be concerned with analytical quality. To test accuracy and reliabi...

The heap leaching of minerals is one of the more commonly used processes in the mining industry. This process has been modeled by many authors. However, the validation, verification, and implementation of these models are difficult since there is uncertainty about the operating conditions and the leaching model parameters. This work uses the uncertainty quantification, based on uncertainty and ...

AIM To develop analytical models and analyse the stress distribution and flexibility of nickel-titanium (NiTi) instruments subject to bending forces. METHODOLOGY The analytical method was used to analyse the behaviours of NiTi instruments under bending forces. Two NiTi instruments (RaCe and Mani NRT) with different cross-sections and geometries were considered. Analytical results were derived...

BACKGROUND The present paper is a manual for the Transference Work Scale (TWS). The inter-rater agreement on the 26 TWS items was good to excellent and previously published. TWS is a therapy process rating scale focusing on Transference Work (TW) (i.e. analysis of the patient-therapist relationship). TW is considered a core active ingredient in dynamic psychotherapy. Adequate process scales are...

Although brute-force simulations of Maxwell’s equations, such as FDTD methods, have enjoyed wide success in modeling photonic-crystal systems, they are not ideally suited for the study of weak perturbations, such as surface roughness or gradual waveguide transitions, where a high resolution and/or large computational cells are required. Instead, we suggest that these important problems are idea...

Sweet cream liquid buttermilk and skimmed milk ingredients were heat processed and/or exposed to fluorescent light to determine changes in potential flavor compounds. Solid phase microextraction-gas chromatography/flame ionization detection was used to analyze the concentrations of the volatile compounds (2-butanone, 2-pentanone, acetaldehyde, diacetyl, hexanal, methyl sulfide) found in the two...

Direct measurement of trace elements on wafer surfaces by TXRF is quick and nondestructive. SR-TXRF has similar features to TXRF, but much better detection limits mainly due to the high flux. VPD-TXRF and VPD-SR-TXRF improve the detection capability to various degrees. However, some elements (e.g. Cu) may have recovery problems at certain concentrations. VPD-ICP-MS is a destructive technique be...

In pharmaceutical industries, the validation of analytical methods is used to demonstrate that the method is fitted for its purpose; it must follow a plan which includes scope, performance characteristics, and acceptance limits. Analytical methods need to be validated or revalidated prior to their introduction into routine analyses (release of batch). The overarching philosophy in current good ...

The number and variety of sources of spatial data continues to expand, as do the debates regarding the quality and usability of such data, particularly those which are Free and Open Source (FOS) or free-to-use. The highest quality data is often expensive to obtain and the option of cost-free data sets is tempting for many users. With the existence of the huge hinterland of data quality research...