scholarly journals Comparison and correction of element measurements using qualitative and quantitative X-ray fluorescence in lacustrine sediments: A case study of Lake Hurleg

2020 ◽  
Vol 198 ◽  
pp. 03035
Author(s):  
Aiying Cheng ◽  
Junqing Yu ◽  
Chunliang Gao ◽  
Lisha Zhang
Keyword(s):  
Lacustrine Sediments ◽  
Correlation Coefficients ◽  
Core Sediment ◽  
X Ray ◽  
Qualitative And Quantitative ◽  
Northeastern Tibetan Plateau ◽  
Accuracy Comparison ◽  
Xrf Core Scanner ◽  
Xrf Core Scanning

Using an X-ray Fluorescence (XRF) core scanner with nondestructive and successive, the chemistry features of lacustrine sediment can be measured directly. This method of XRF core scanner measurements has been widely applied to core sediment analysis but uncertain of the precision and accuracy. Comparison of intensities obtained by XRF core scanning and the concentration measured by conventional X-ray Fluorescence, indicates effects of physical properties varied from different elements on elemental intensities in the lacustrine sediments of a core from Lake Hurleg in the northeastern Tibetan Plateau. Correlation among elements Ti and Sr between the two measurement methods of the XRF and the conventional XRF is high. Using the intensity of Cl as an indicator of water content, the element intensities of Ti and Sr in the core samples is corrected. But the correlation coefficients of Ti and Sr is litter raised. The results show that XRF core scanning is a very useful tool for measuring element concentration in sediments particularly for high intensities elements.

scholarly journals Comparison and correction of element measurements in lacustrine sediments using X-ray fluorescence core-scanning with ICP-OES method:A case study of Zigetang Co

2011 ◽  
Vol 23 (2) ◽  
pp. 287-294 ◽  
Author(s):  
LEI Guoliang ◽  
◽  
ZHANG Hucai ◽  
CHANG Fengqin ◽  
ZHU Yun ◽  
...  
Keyword(s):  
Lacustrine Sediments ◽  
Icp Oes ◽  
X Ray

Drowning in negativism, self-hate, doubt, madness: Linguistic insights into Sylvia Plath’s experience of depression

2015 ◽  
Vol 11 (1) ◽  
pp. 41-54 ◽  
Author(s):  
Zsófia Demjén
Keyword(s):  
Lived Experience ◽  
Medical Humanities ◽  
Sylvia Plath ◽  
Individual Experience ◽  
Qualitative And Quantitative ◽  
The World ◽  
The Individual ◽  
Linguistic Methods ◽  
Linguistic Approach

This paper demonstrates how a range of linguistic methods can be harnessed in pursuit of a deeper understanding of the ‘lived experience’ of psychological disorders. It argues that such methods should be applied more in medical contexts, especially in medical humanities. Key extracts from The Unabridged Journals of Sylvia Plath are examined, as a case study of the experience of depression. Combinations of qualitative and quantitative linguistic methods, and inter- and intra-textual comparisons are used to consider distinctive patterns in the use of metaphor, personal pronouns and (the semantics of) verbs, as well as other relevant aspects of language. Qualitative techniques provide in-depth insights, while quantitative corpus methods make the analyses more robust and ensure the breadth necessary to gain insights into the individual experience. Depression emerges as a highly complex and sometimes potentially contradictory experience for Plath, involving both a sense of apathy and inner turmoil. It involves a sense of a split self, trapped in a state that one cannot overcome, and intense self-focus, a turning in on oneself and a view of the world that is both more negative and more polarized than the norm. It is argued that a linguistic approach is useful beyond this specific case.

Sthoulya w.s.r. to Obesity Management - A Case Study

2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Dr. Navyashree KL ◽  
Dr. Manjunatha Adiga
Keyword(s):  
Daily Living ◽  
Quantitative Data ◽  
Metabolic Disorders ◽  
New World ◽  
Obesity Management ◽  
Qualitative And Quantitative ◽  
Results Management ◽  
Individual Disease

Background: New world syndrome like obesity is one of the world’s oldest metabolic disorders is heading for the rocks with various reasons like urbanization and modernization. Though obesity and over weight is not affecting much to a person for daily living, the complication of which has become burning issue in the society. Aim and Objective: To assess the efficacy of Shamanoushadi along with Pathya Ahara Vihara. Methods: Guduchi Bhadraadi Kashaya, Hareetaki Churna and Pathya Ahara Vihara. Results: Management of Sthoulya with Pathya Ahara Vihara along with Shamanoushadi was effective in all qualitative and quantitative data. Discussion: The drug possessing Rooksha Guna, Kaphahara property counteracts Sthoulya. Conclusion: Our classics with variety of treatment to individual disease suggest the stages or condition that disease can cross over

scholarly journals Characterization and mapping of hematite ore mineral classes using hyperspectral remote sensing technique: a case study from Bailadila iron ore mining region

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Ibrahim Shaik ◽  
S. K. Begum ◽  
P. V. Nagamani ◽  
Narayan Kayet
Keyword(s):  
Infrared Absorption ◽  
Near Infrared ◽  
Spectral Feature ◽  
Absorption Feature ◽  
X Ray ◽  
Remote Sensing Technique ◽  
Ore Minerals ◽  
Feature Fitting ◽  
Hematite Ore

AbstractThe study demonstrates a methodology for mapping various hematite ore classes based on their reflectance and absorption spectra, using Hyperion satellite imagery. Substantial validation is carried out, using the spectral feature fitting technique, with the field spectra measured over the Bailadila hill range in Chhattisgarh State in India. The results of the study showed a good correlation between the concentration of iron oxide with the depth of the near-infrared absorption feature (R2 = 0.843) and the width of the near-infrared absorption feature (R2 = 0.812) through different empirical models, with a root-mean-square error (RMSE) between < 0.317 and < 0.409. The overall accuracy of the study is 88.2% with a Kappa coefficient value of 0.81. Geochemical analysis and X-ray fluorescence (XRF) of field ore samples are performed to ensure different classes of hematite ore minerals. Results showed a high content of Fe > 60 wt% in most of the hematite ore samples, except banded hematite quartzite (BHQ) (< 47 wt%).

The Creation of a Mental Health Policy in Higher Education

2021 ◽  
pp. 089590482110156
Author(s):  
Kelly A. Pilato ◽  
Madelyn P. Law ◽  
Miya Narushima ◽  
Shannon A. Moore ◽  
John A. Hay
Keyword(s):  
Critical Appraisal ◽  
Mental Health Policy ◽  
Student Voices ◽  
Limited Evidence ◽  
Comprehensive University ◽  
Qualitative And Quantitative ◽  
Student Union ◽  
The Creation ◽  
Mental Wellness

The mental wellness of university students can be critical for their success. In an attempt to minimize stress for students, many universities have implemented a policy for a fall break with limited evidence to support its intended outcomes. This case study offers a critical appraisal of the formation of the fall break policy at one medium sized comprehensive university using qualitative and quantitative forms of evidence triangulated from (1) University Student Union survey, (2) document analysis and; (3) informant interview. The lack of uniformity on how the fall break is labelled, the timing of the break and its evaluation emerged as design flaws in the creation stage that perhaps, could have been mitigated if faculty and student voices were included in policy creation decisions.

scholarly journals Non-destructive handheld XRF study of archaeological composite silver objects—the case study of the late Roman Seuso Treasure

2021 ◽  
Vol 13 (5) ◽  
Author(s):  
Viktória Mozgai ◽  
Bernadett Bajnóczi ◽  
Zoltán May ◽  
Zsolt Mráv
Keyword(s):  
Fluorescence Analysis ◽  
The Body ◽  
High Quality ◽  
X Ray ◽  
Composite Objects ◽  
Mechanical Attachment ◽  
Non Destructive ◽  
Made In ◽  
Late Roman

AbstractThis study details the non-destructive chemical analysis of composite silver objects (ewers, situlas, amphora and casket) from one of the most significant late Roman finds, the Seuso Treasure. The Seuso Treasure consists of fourteen large silver vessels that were made in the fourth–early fifth centuries AD and used for dining during festive banquets and for washing and beautification. The measurements were systematically performed along a pre-designed grid at several points using handheld X-ray fluorescence analysis. The results demonstrate that all the objects were made from high-quality silver (above 90 wt% Ag), with the exception of the base of the Geometric Ewer B. Copper was added intentionally to improve the mechanical properties of soft silver. The gold and lead content of the objects shows constant values (less than 1 wt% Au and Pb). The chemical composition as well as the Bi/Pb ratio suggests that the parts of the composite objects were manufactured from different silver ingots. The ewers were constructed in two ways: (i) the base and the body were made separately, or (ii) the ewer was raised from a single silver sheet. The composite objects were assembled using three methods: (i) mechanical attachment; (ii) low-temperature, lead-tin soft solders; or (iii) high-temperature, copper-silver hard solders. Additionally, two types of gilding were revealed by the XRF analysis, one with remnants of mercury, i.e. fire-gilding, and another type without remnants of mercury, presumably diffusion bonding.

scholarly journals The Effect of Long-Term Impact of Elevated Temperature on Changes in Microstructure and Mechanical Properties of HR3C Steel

2016 ◽  
Vol 61 (2) ◽  
pp. 761-766 ◽  
Author(s):  
A. Zieliński ◽  
M. Sroka ◽  
A. Hernas ◽  
M. Kremzer
Keyword(s):  
Mechanical Properties ◽  
Elevated Temperature ◽  
X Ray ◽  
Qualitative And Quantitative ◽  
Microstructure And Mechanical Properties ◽  
Transmission Electron ◽  
Quantitative Identification ◽  
Working Parameters ◽  
Long Term Impact

Abstract The HR3C is a new steel for pressure components used in the construction of boilers with supercritical working parameters. In the HR3C steel, due to adding Nb and N, the compounds such as MX, CrNbN and M23C6 precipitate during service at elevated temperature, resulting in changes in mechanical properties. This paper presents the results of microstructure investigations after ageing at 650, 700 and 750 °C for 5,000 h. The microstructure investigations were carried out using scanning and transmission electron microscopy. The qualitative and quantitative identification of the existing precipitates was carried out using X-ray analysis of phase composition. The effect elevated temperature on microstructure and mechanical properties of the examined steel was described.

Innovative Wireline X-Ray Diagnostic Service Reduces Risk During Well Interventions: A Case Study

2016 ◽  
Author(s):  
Melissa Spannuth ◽  
Radu Achihai ◽  
Juan Angel ◽  
Spencer Gunn ◽  
Jack Johns ◽  
...  
Keyword(s):  
X Ray ◽  
Diagnostic Service
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