76,689 research outputs found
Impact of the disposal and re-use of fly ash on water quality: The case of the Koradi and Khaperkheda thermal power plants (Maharashtra, India)
No full textAn increasing amount of fly ash from thermal power plants is produced in India every year. Its disposal is generally done in ponds after it is mixed together in suitable proportion of water to form a slurry. Fly ash from Koradi
and Khaperkheda thermal power plants (Nagpur, Maharashtra) is commonly disposed in an area characterized by the presence of many small villages where the population uses the groundwater for drinking and domestic
purposes. Here, the groundwater locally exceeds the concentration limits recommended by the Bureau of Indian Standards (BIS, 2005) and by the World Health Organization (WHO, 2008) for Mg2+, Ca2+, NO3 −, SO4 2−,
Total Dissolved Solids (TDS) and for some minor elements like As, Mo, V and U. A new geological map of the study area has been prepared to understand the possiblewater–rock interactions. An extensive geochemical survey of groundwater, stream water and fly ash was also carried out to clarify the possible origin of the pollutants by discriminating between geogenic and anthropogenic sources and to assess the influence of the ash ponds on water quality. The analytical results suggest that a large part of the sulfates in the groundwater of the villages of Masada, Khairi and Kawatha originate from the infiltration of industrial water from tens of factories that mix fly ash with relatively high quantities of gypsum and lime for the production of
bricks. In addition, the interaction with the relatively U-rich Gondwana units, like Talchir formation, is probably the cause of the high concentration of this element. Results showed howthe relatively high concentrations ofMo,
As, B and F in circulating waters are linked to the leaching fromfly ash, also pointing out a direct spatial correlation between the concentration of fluorides in the groundwater and their closeness to the ash ponds
Model based defect characterization in composites
No full textWork is reported on model-based defect characterization in CFRP composites. The work utilizes computational models of the interaction of NDE probing energy fields (ultrasound and thermography), to determine 1) the measured signal dependence on material and defect properties (forward problem), and 2) an assessment of performance-critical defect properties from analysis of measured NDE signals (inverse problem). Work is reported on model implementation for inspection of CFRP laminates containing multi-ply impact-induced delamination, with application in this paper focusing on ultrasound. A companion paper in these proceedings summarizes corresponding activity in thermography. Inversion of ultrasound data is demonstrated showing the quantitative extraction of damage properties.This proceeding may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.
This proceeding appeared in Roberts, R., and S. Holland. "Model based defect characterization in composites." In AIP Conference Proceedings, vol. 1806, no. 1, p. 090015. AIP Publishing LLC, 2017, and may be found at
DOI: 10.1063/1.4974659.
Copyright 2017 Author(s).
Posted with permission
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Liftings for noncomplete probability spaces
No full textThe current state of knowledge concerning liftings for noncomplete probability spaces is discussed. This is a somewhat expanded version of the author's talk given at the 1991 Summer Conference on General Topology and Applications in Honor of Mary Ellen Rudin and Her Work.PT: S; CR: BURKE MR, IN PRESS P AM MATH S BURKE MR, 1991, ISRAEL J MATH, V73, P33 BURKE MR, 1992, ISRAEL J MATH, V79, P289 CARLSON T, THEOREM LIFTING CHRISTENSEN JPR, 1974, TOPOLOGY BOREL STRUC FREMLIN DH, 1989, HDB BOOLEAN ALGEBRAS, P877 INOESCUTULCEA A, 1966, 5TH P BERK S MATH ST, V2 IONESCUTULCEA A, 1967, CONTRIBUTIONS PROB 1, P63 IONESCUTULCEA A, 1969, TOPICS THEORY LIFTIN JECH TJ, 1978, SET THEORY JOHNSON RA, 1980, P AM MATH SOC, V80, P234 JUST W, IN PRESS T AM MATH S KUPKA J, 1983, INDIANA U MATH J, V32, P717 LOSERT V, 1983, LNM, V1080, P95 MAHARAM D, 1958, P AM MATH SOC, V9, P987 SHELAH S, 1983, ISRAEL J MATH, V45, P90 TALAGRAND M, 1982, P AM MATH SOC, V84, P379 VONNEUMANN J, 1931, CRELLES J MATH, V165, P109; NR: 18; TC: 0; J9: ANN N Y ACAD SCI; PG: 4; GA: BZ86BSource type: Electronic(1
R Code and Output Supporting: Do Capture and Survey Methods Influence Whether Marked Animals are Representative of Unmarked Animals?
No full textThe archive consists of 9 files:
1. WA_elk.R = R code used to analyze elk resighting data.
2. WA_elk.html = html output resulting from running the R code in WA_elk.R.
3. Mtg_AK_WA.R = R code used to analyze mountain goat resighting data.
4. Mtg_AK_WA.html = html output resulting from running the R code in Mtg_AK_WA.R.
5. Moose_MN.R = R code used to analyze moose resighting data.
6. Moose_MN.html = html output resulting from running the R code in Moose_MN.R.
7. sightdat.csv = resighting data collected from moose in Minnesota between 2004 and 2007.
8. MTG_Sight_Alaska.csv = resighting data collected from mountain goats in Alaska.
9. NE_MN_Map.pdf = map of collection region for moose resighting data.These files contain R code (along with associated output from running the code) supporting all results reported in "Do Capture and Survey Methods Influence Whether Marked Animals are Representative of Unmarked Animals?" in Wildlife Society Bulletin. The lead author wrote this code to analyze multi-year re-sighting data collected from moose (Alces alces) in Minnesota, elk (Cervus elaphus) in Washington, and mountain goats (Oreamnos americanus) in Washington and Alaska, to evaluate whether detection probabilities increased or decreased as a function of time since animals were captured.Fieberg, John R; White, Kevin S. (2015). R Code and Output Supporting: Do Capture and Survey Methods Influence Whether Marked Animals are Representative of Unmarked Animals?. Retrieved from the University Digital Conservancy, http://dx.doi.org/10.13020/D6Z597
An evolutionary approach to modelling concrete degradation due to sulphuric acid attack
No full textConcrete corrosion due to sulphuric acid attack is known to be one of the main contributory factors for degradation of concrete sewer pipes. This paper proposes to use a novel data mining technique, namely, evolutionary polynomial regression (EPR), to predict degradation of concrete subject to sulphuric acid attack. A comprehensive dataset from literature is collected to train and develop an EPR model for this purpose. The results show that the EPR model can successfully predict mass loss of concrete specimens exposed to sulphuric acid. Parametric studies show that the proposed model is capable of representing the degree to which individual contributing parameters can affect the degradation of concrete. The developed EPR model is compared with a model based on artificial neural network (ANN) and the advantageous of the EPR approach over ANN is highlighted. In addition, based on the developed EPR model and using an optimisation technique, the optimum concrete mixture to provide maximum resistance against sulphuric acid attack has been identified
Observations of Bºs→ψ(2S)η and Bº(s)→ψ(2S)π+π- decays
No full textFirst observations of the B0s
→ψ(2S)η, B0 →ψ(2S)π
+
π
− and B0s
→ψ(2S)π
+
π
− decays are made
using a dataset corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experiment in
proton–proton collisions at a centre-of-mass energy of
√
s = 7 TeV. The ratios of the branching fractions
of each of the ψ(2S) modes with respect to the corresponding J/ψ decays are
B(B0s
→ψ(2S)η)
÷
B(B0s
→J/ψη)
= 0.83± 0.14 (stat)±0.12 (syst) ±0.02 (B),
;
B(B0→ψ(2S)π
+
π
−
)
÷
B(B0→J/ψπ
+
π
−
)
= 0.56± 0.07 (stat)±0.05 (syst)± 0.01 (B),
;
B(B0s
→ψ(2S)π
+
π
−
)
÷
B(B0s
→J/ψπ
+
π
−
)
= 0.34± 0.04 (stat)±0.03 (syst)± 0.01 (B),
where the third uncertainty corresponds to the uncertainties of the dilepton branching fractions of the J/ψ
and ψ(2S) meson decays
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Erratum: Patients with Severe Obesity during the COVID- 19 Pandemic: How to Maintain an Adequate Multidisciplinary Nutritional Rehabilitation Program? (Obes Facts. (2021) DOI: 10.1159/000513283)
No full textIn the article by De Amicis et al. entitled "Patients with Severe Obesity during the COVID- 19 Pandemic: How to Maintain an Adequate Multidisciplinary Nutritional Rehabilitation Program?" [Obes Facts. 2021, DOI: 10.1159/000513283], the author list is incorrect. The correct author list is: De Amicis R. Cancello R. Capodaglio P. Gobbi M. Brunani A. Gilardini L. Castelnuovo G. Molinari E. Barbieri V. Mambrini S.P. Battezzati A. Bertoli S
Implied Author, Overall Consideration, and Subtext of "Desiree's Baby"
No full textThis essay explores how to infer from a text the image of the implied author. It examines Kate Chopin's "Desiree's Baby" (1893), which has been widely regarded as an indictment of racism but which an "overall consideration" of the implied author's choices will lead us to see as a racist text. Through the interaction of various details in the text, the implied author suggests three racist dichotomies: (1) white characters' nondiscrimination versus black characters' discrimination, (2) positive slavery under white masters versus negative slavery under a black master, and (3) superior whites versus inferior blacks. This implied racist stance reflects the historical context of Chopin's personal experiences, but it contrasts with the quite different racial stances of the implied authors of some other Chopin narratives with different thematic designs. The complexity of the narratives under the name "Kate Chopin" offers an opportunity not only to gain a better understanding of the concept of implied author but also to clarify the relations (connections as well as disparities) among textual, intertextual, and extratextual evidence in literary interpretation in general.LiteratureA&HCI4ARTICLE2285-3113
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