The Experts below are selected from a list of 1893 Experts worldwide ranked by ideXlab platform
Manfred Groning - One of the best experts on this subject based on the ideXlab platform.
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on the metrological traceability and hierarchy of stable isotope reference materials aimed at realisation of the vpdb Scale revision of the vpdb δ13c Scale based on Multipoint Scale anchoring rms
Rapid Communications in Mass Spectrometry, 2021Co-Authors: S S Assonov, Ales Fajgelj, C E Allison, Manfred GroningAbstract:Rationale In recent years, the primary reference material (RM) for the VPDB Scale, NBS19, has become unavailable, and the RM used for low-end Scale-anchoring, LSVEC, was found unsuitable due a drift in the δ13 C value. Given these problems, new RMs aimed at realising the VPDB δ13 C Scale with low uncertainty were produced. Establishing the consistency of the new RMs with the "old" RMs prompted our revision of the underlying principles of RM value assignments, and the VPDB δ13 C Scale realisation and its long-term sustainability. Methods Analysis of major developments of the VPDB Scale, a review of the contemporary requirements for RMs, and comparison with well-established measurement Scales have been performed, with the aim of revising the VPDB δ13 C Scale, principles of RM value assignments, and calibrator hierarchy. Requirements for Scale-anchoring RMs with low uncertainty and measures to establish the Scale sustainability have been formulated. Results The revised Scale realisation is based on multiple reference points, well-defined calibration hierarchy and the use of well-understood methods for value assignment. The realisation scheme includes the new primary RM IAEA-603 and Scale-anchoring RMs IAEA-610, IAEA-611 and IAEA-612, covering δ13 C from +2.46 to -36.7 ‰ VPDB, with uncertainties, including inhomogeneity and stability assessment, of less than 0.015 ‰. The values of these four RMs were assigned in a mutually consistent way; agreement between measurements made using this realisation with those made using the VPDB Scale of 2006 has been demonstrated on NIST CO2 RMs 8562-8564. Conclusions Multipoint-anchoring of the VPDB δ13 C Scale provides several distinct "points" on the Scale as means for cross-measurements to check the stability and viability of RMs and detect drift of values, if any. This ensures that the δ13 C Scale is suitable for the most demanding applications, and provides options for developing further RMs with high accuracy inside a robust Scale realisation scheme.
S S Assonov - One of the best experts on this subject based on the ideXlab platform.
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on the metrological traceability and hierarchy of stable isotope reference materials aimed at realisation of the vpdb Scale revision of the vpdb δ13c Scale based on Multipoint Scale anchoring rms
Rapid Communications in Mass Spectrometry, 2021Co-Authors: S S Assonov, Ales Fajgelj, C E Allison, Manfred GroningAbstract:Rationale In recent years, the primary reference material (RM) for the VPDB Scale, NBS19, has become unavailable, and the RM used for low-end Scale-anchoring, LSVEC, was found unsuitable due a drift in the δ13 C value. Given these problems, new RMs aimed at realising the VPDB δ13 C Scale with low uncertainty were produced. Establishing the consistency of the new RMs with the "old" RMs prompted our revision of the underlying principles of RM value assignments, and the VPDB δ13 C Scale realisation and its long-term sustainability. Methods Analysis of major developments of the VPDB Scale, a review of the contemporary requirements for RMs, and comparison with well-established measurement Scales have been performed, with the aim of revising the VPDB δ13 C Scale, principles of RM value assignments, and calibrator hierarchy. Requirements for Scale-anchoring RMs with low uncertainty and measures to establish the Scale sustainability have been formulated. Results The revised Scale realisation is based on multiple reference points, well-defined calibration hierarchy and the use of well-understood methods for value assignment. The realisation scheme includes the new primary RM IAEA-603 and Scale-anchoring RMs IAEA-610, IAEA-611 and IAEA-612, covering δ13 C from +2.46 to -36.7 ‰ VPDB, with uncertainties, including inhomogeneity and stability assessment, of less than 0.015 ‰. The values of these four RMs were assigned in a mutually consistent way; agreement between measurements made using this realisation with those made using the VPDB Scale of 2006 has been demonstrated on NIST CO2 RMs 8562-8564. Conclusions Multipoint-anchoring of the VPDB δ13 C Scale provides several distinct "points" on the Scale as means for cross-measurements to check the stability and viability of RMs and detect drift of values, if any. This ensures that the δ13 C Scale is suitable for the most demanding applications, and provides options for developing further RMs with high accuracy inside a robust Scale realisation scheme.
Ales Fajgelj - One of the best experts on this subject based on the ideXlab platform.
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on the metrological traceability and hierarchy of stable isotope reference materials aimed at realisation of the vpdb Scale revision of the vpdb δ13c Scale based on Multipoint Scale anchoring rms
Rapid Communications in Mass Spectrometry, 2021Co-Authors: S S Assonov, Ales Fajgelj, C E Allison, Manfred GroningAbstract:Rationale In recent years, the primary reference material (RM) for the VPDB Scale, NBS19, has become unavailable, and the RM used for low-end Scale-anchoring, LSVEC, was found unsuitable due a drift in the δ13 C value. Given these problems, new RMs aimed at realising the VPDB δ13 C Scale with low uncertainty were produced. Establishing the consistency of the new RMs with the "old" RMs prompted our revision of the underlying principles of RM value assignments, and the VPDB δ13 C Scale realisation and its long-term sustainability. Methods Analysis of major developments of the VPDB Scale, a review of the contemporary requirements for RMs, and comparison with well-established measurement Scales have been performed, with the aim of revising the VPDB δ13 C Scale, principles of RM value assignments, and calibrator hierarchy. Requirements for Scale-anchoring RMs with low uncertainty and measures to establish the Scale sustainability have been formulated. Results The revised Scale realisation is based on multiple reference points, well-defined calibration hierarchy and the use of well-understood methods for value assignment. The realisation scheme includes the new primary RM IAEA-603 and Scale-anchoring RMs IAEA-610, IAEA-611 and IAEA-612, covering δ13 C from +2.46 to -36.7 ‰ VPDB, with uncertainties, including inhomogeneity and stability assessment, of less than 0.015 ‰. The values of these four RMs were assigned in a mutually consistent way; agreement between measurements made using this realisation with those made using the VPDB Scale of 2006 has been demonstrated on NIST CO2 RMs 8562-8564. Conclusions Multipoint-anchoring of the VPDB δ13 C Scale provides several distinct "points" on the Scale as means for cross-measurements to check the stability and viability of RMs and detect drift of values, if any. This ensures that the δ13 C Scale is suitable for the most demanding applications, and provides options for developing further RMs with high accuracy inside a robust Scale realisation scheme.
C E Allison - One of the best experts on this subject based on the ideXlab platform.
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on the metrological traceability and hierarchy of stable isotope reference materials aimed at realisation of the vpdb Scale revision of the vpdb δ13c Scale based on Multipoint Scale anchoring rms
Rapid Communications in Mass Spectrometry, 2021Co-Authors: S S Assonov, Ales Fajgelj, C E Allison, Manfred GroningAbstract:Rationale In recent years, the primary reference material (RM) for the VPDB Scale, NBS19, has become unavailable, and the RM used for low-end Scale-anchoring, LSVEC, was found unsuitable due a drift in the δ13 C value. Given these problems, new RMs aimed at realising the VPDB δ13 C Scale with low uncertainty were produced. Establishing the consistency of the new RMs with the "old" RMs prompted our revision of the underlying principles of RM value assignments, and the VPDB δ13 C Scale realisation and its long-term sustainability. Methods Analysis of major developments of the VPDB Scale, a review of the contemporary requirements for RMs, and comparison with well-established measurement Scales have been performed, with the aim of revising the VPDB δ13 C Scale, principles of RM value assignments, and calibrator hierarchy. Requirements for Scale-anchoring RMs with low uncertainty and measures to establish the Scale sustainability have been formulated. Results The revised Scale realisation is based on multiple reference points, well-defined calibration hierarchy and the use of well-understood methods for value assignment. The realisation scheme includes the new primary RM IAEA-603 and Scale-anchoring RMs IAEA-610, IAEA-611 and IAEA-612, covering δ13 C from +2.46 to -36.7 ‰ VPDB, with uncertainties, including inhomogeneity and stability assessment, of less than 0.015 ‰. The values of these four RMs were assigned in a mutually consistent way; agreement between measurements made using this realisation with those made using the VPDB Scale of 2006 has been demonstrated on NIST CO2 RMs 8562-8564. Conclusions Multipoint-anchoring of the VPDB δ13 C Scale provides several distinct "points" on the Scale as means for cross-measurements to check the stability and viability of RMs and detect drift of values, if any. This ensures that the δ13 C Scale is suitable for the most demanding applications, and provides options for developing further RMs with high accuracy inside a robust Scale realisation scheme.
Seligman, Katherine M - One of the best experts on this subject based on the ideXlab platform.
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Development of a Tool to Qualitatively Access Impact of Customized Patient Education Materials on Patient Satisfaction During Labor and Delivery Experience
UNM Digital Repository, 2020Co-Authors: Graham Austin, Greider Kylee, Petersen Timothy, Seligman, Katherine MAbstract:The Painless Push (www.thepainlesspush.com) is an engaging and interactive patient education website that is tailored to the New Mexican population to provide patients evidence-based information about pain relief options for labor and delivery. We hypothesized that having an increased knowledge base and understanding of pain relief options during labor and delivery may help patients feel more prepared for delivery, more comfortable with their various pain relief options, and overall more satisfied with the experience of child birth. In review of the current literature, it was identified there has not been a validated tool developed to analyze this experience In a systematic review of women’s experience of childbirth[1], it was identified that maternal satisfaction of childbirth experience was multi-dimensional and depended mostly on four identified measures: their personal expectations, support from caregivers, patient-caregiver relationship and maternal involvement and feelings of control in decision making. Using results of an additional systematic review evaluating patient-satisfaction measures throughout the field of Anesthesia[2], we developed a Likert Multipoint Scale to qualitatively measure 10 statements to be assessed in the early post-partum period evaluating their satisfaction of their child birth experience. Items surveyed included elements pertaining to their personal expectations, support from caregivers, patient-caregiver relationship and maternal involvement and feelings of patient choice in pain management and autonomy in decision making. Additionally, we assessed their satisfaction with the information they received, their feelings of safety in regard to pain relief options, and if they were pain free were also measured. We are currently in the process of early data collection and hope to identify if our educational website holds any impact on maternal satisfaction. The evaluation tool and website is available in both English and Spanish. We further hope to identify if prior differences in satisfaction with pain relief in labor between Hispanic and non-Hispanic women are abated when primary-language specific information is provided to patients. [1] Hodnett E. Pain and women\u27s satisfaction with the experience of childbirth: a systematic review. American Journal of Obstetrics and Gynecology. 2002;186(5):172. [2] Barnett SF, Alagar RK, Grocott MP, Giannaris S, Dick JR, Moonesinghe SR. Patient-satisfaction measures in anesthesia: qualitative systematic review. Anesthesiology. 2013;119:452-478
