Quantitative Determination of Metallic Iron Content in Steel-Making Slag

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http://www.scirp.org/journal/PaperInformation.aspx?PaperID=20255#.VNCF4yzQrzE

ABSTRACT

A quantitative analytical method for metallic iron was developed for wastes from iron and steel mills. These wastes consist of slags, dusts and sludges, mill scales, spent pickle liquor, and other iron-bearing materials. Accurate determination of metallic iron in these wastes will provide the vital information for the recycling or reuse of these wastes. The new procedure for the determination of metallic iron (Fe0) was developed and various factors that could affect the test result were determined. Pure metallic iron powders were mixed with pure iron oxides with various ratios and then were tested using this method. Testing results had excellent agreement with actual concentration. Samples from several sites have been tested.

Cite this paper

Z. Xu, J. Hwang, R. Greenlund, X. Huang, J. Luo and S. Anschuetz, “Quantitative Determination of Metallic Iron Content in Steel-Making Slag,” Journal of Minerals and Materials Characterization and Engineering, Vol. 2 No. 1, 2003, pp. 65-70.

References

[1] Steel Industry Technology Roadmap, December, (2001).
[2] ASTM, Standard Test Method for Determination of Total Iron in Iron Ores and Related Materials by Silver Reduction-Dichromate Titration, ASTM E 1081-95a, Annual Book of ASTM Standards, Vol. 03.06, 311-314 (2000).
[3] ASTM, Standard Test Method for Iron in Iron Ores and Related Materials by Hydrogen Sulfide Reduction and Dichromate Titration, ASTM E 246-95, Annual Book of ASTM Standards, Vol. 03.05, 249-252 (2000).
[4] ASTM, Standard Test Method for Total Iron in Iron Ores and Related Materials by Dichromate Titrimetry, ASTM E 1028-98, Annual Book of ASTM Standards, Vol. 03.06, 292-295 (2000).
[5] Kentucky Transportation Cabinet, KM 64-618-01 Metallic iron content in slag, (2001).
[6] J. Aubry and P. Perrot, Chim. Anal., 47, No. 4, 177-179 (1965).                                                eww150203lx
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[8] David R. Lide (Editor-in-Chief), CRC Handbook of Chemistry and Physics, 80th Edition, (1999-2000).
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First Note on the Definition of s1-Convexity

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http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52797#.VKNnP8nQrzE

Author(s)

ABSTRACT

In this note, we analyze a few major claims about <span “=””>. As a consequence, we rewrite a major theorem, nullify its proof and one remark of importance, and offer a valid proof for it. The most important gift of this paper is probably the reasoning involved in all: We observe that a constant, namely t, has been changed into a variable, and we then tell why such a move could not have been made, we observe the discrepancy between the claimed domain and the actual domain of a supposed function that is created and we then explain why such a function could not, or should not, have been created, along with others.

Cite this paper

Pinheiro, I. (2014) First Note on the Definition of s1-Convexity. Advances in Pure Mathematics, 4, 674-679. doi: 10.4236/apm.2014.412076.

References

[1] Pinheiro, M.R. (2008) Convexity Secrets. Trafford, Canada, ISBN 1-4251-3821-7.
[2] Pearce, C.E.M. and Dragomir, S.S. (2000) Selected Topics on Hermite-Hadamard Inequalities and Applications. RGMIA Monographs. http://rgmia.org/papers/monographs/Master.pdf
[3] Hudzik, H. and Maligranda, L. (1994) Some Remarks on s-Convex Functions. Aequationes Mathematicae, 48, 100-111. http://dx.doi.org/10.1007/BF01837981
[4] Pinheiro, M.R. (2013) Minima Domain Intervals and the S-Convexity, as Well as the Convexity, Phenomenon. Advances in Pure Mathematics, 3, 457-458.
[5] Pinheiro, M.R. (2004) Exploring the Concept of s-Convexity. Proceedings of the 6th WSEAS Int. Conf. on Mathematics and Computers in Physics (MCP ’04).                                                          eww141231lx

Discharge Policy Analysis in Prince Hamzah Hospital

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http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52672#.VKC5acCAM4

ABSTRACT

A discharge policy is intended to ensure provision of fit, timely discharge arrangements to an appropriate safe environment for all patients on completion of their hospital care. This paper analyzes the current discharge policy in Prince Hamzah Hospital, to discover if it can be made more effective. The analysis is based on Patton and Sawicki’s six-step model of policy analysis. According to Patton and Sawicki’s six-step model of policy analysis, the process involves problem identification, determining policy objectives, establishing evaluation criteria, suggesting and assessing possible alternatives, and implementing, monitoring, and evaluating the policy after modification. It was concluded that the policy should remain a live document that could be refined, updated and expanded as appropriate.

Cite this paper

Alghzawi, H. , Hourani, R. , Alrashaida, B. , Hamdan-Mansour, A. and Bayomi, M. (2014) Discharge Policy Analysis in Prince Hamzah Hospital. Health, 6, 3022-3029. doi: 10.4236/health.2014.621340.

References

[1] ACT Health (2006) Discharge Planning Policy.
http://www.act.gov.au/health
[2] Wibe, T., Ekstedt, M. and Helles, R. (2014) Information Practices of Health Care Professionals Related to Patient Discharge from Hospital. Informatics for Health and Social Care, 39.
[3] Silow-Caroll, S.E., Edwards, J.N. and Lashbrook, A. (2011) Reducing Hospital Readmissions: Lessons from Top-Performing Hospitals.
http://www.commonwealthfund.org/
[4] Mostaqbal’s Legacy (2013)
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[5] Patton, C. and Sawicki, D. (1993) Basic Methods of Policy Analysis and Planning. Prentice-Hall, Upper Saddle River.
[6] Shepperd, S., McClaran, J., Phillips, C.O., Lannin, N.A., Clemson, L.M., McCluskey, A., Cameron, I.D. and Barras, S.L. (2010) Discharge Planning from Hospital to Home. Cochrane Database of Systematic Reviews, 1, CD000313.
[7] University Hospital of Leicester (2011) Discharge Policy for Adult Patient Leaving Hospital.
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[8] Maramba, P.J., Richards, S., Myers, A.L. and Larrabee, J.H. (2014) Discharge Planning Process: Applying a Model for Evidence-Based Practice. Journal of Nursing Care Quality, 19, 123-129.
http://dx.doi.org/10.1097/00001786-200404000-00009                                                           eww141229lx

Petrography, Temperature Measurement, and Economic Evaluation of Granitoid Pluton of Qohrud-Kashan Using EPMA, XRD, and XRF Analysis

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http://www.scirp.org/journal/PaperInformation.aspx?PaperID=49255#.VJDxrcnQrzE

Author(s)

Afshin Ashja Ardalan, Mina Khodadady, Mohammad Hashem Emami, Jamal Sheikh Zakariaie, Mohammad Hosein Razavi, Abdollah Yazdi

Affiliation(s)

Department of Geology, Faculty of Sciences, Islamic Azad University, North Tehran Branch, Tehran, Iran.
Department of Geology, Faculty of Sciences, Islamic Azad University, North Tehran Branch, Tehran, Iran.
Department of Geology, Islamic Azad University, Islamshahr Branch, Islamshahr, Iran.
Department of Geology, Faculty of Sciences, Islamic Azad University, Science and Research Branch, Tehran, Iran.
Department of Geology, Faculty of Sciences, Kharazmi University, Tehran, Iran.
Department of Geology, Islamic Azad University, Kahnooj Branch, Kerman, Iran.

ABSTRACT

The area which is being studied is located in northwest of Isfahan, 30 kilometers south of Kashan, and southern section of Qmasar. The longitude of the area of study is 51°19’13″E to 51°26’26″E and its latitude is 33°34’24″N to 33°44’24″N. Based on microscopic observations, modal analysis, and also based on their location in the Streckeisen [QAPF], both the stones of the Qohrud batholitic mass themselves and its enclaves are more in quartz monzonite ranges. Granitoid also have quartz monzonite enclaves. These enclaves are from both microgranular mafic and Autolith types which indicate the mixing of two magmas. At the center of the pluton, there are indications of existence of main magma reservoir and magma mixing. In terms of mineralogy, the granitoid rocks of the area very much resemble I-type. The zoning of the plagioclases is both the normal kind and variation invert and has andesine general composition. The probed biotite sample contains iron and belongs to a granitic sample from the center of the mass. Also, the ranking graph indicates biotite as the source of recrystallization for the analyzed points. The probed biotite sample of the Qohrud area showed formation temperature of 730 degrees centigrade. According to the Rb and Sr contents, the source of the rocks is at depths of 20 to 30 kilometers from the earth’s surface that are depending on the subduction zone. The formation temperature of the specimens of the Qohrud batholithic mass is mostly between 900 to 1000 degrees centigrade. [At] the center of the mass (around Qahrud), the amount of molybdenum is higher than the economic limit.

KEYWORDS

Kashan, Qohrud, Granitoid, Temperature Measurement, Analysis

Cite this paper

Ardalan, A. , Khodadady, M. , Emami, M. , Zakariaie, J. , Razavi, M. and Yazdi, A. (2014) Petrography, Temperature Measurement, and Economic Evaluation of Granitoid Pluton of Qohrud-Kashan Using EPMA, XRD, and XRF Analysis. Open Journal of Geology, 4, 406-424. doi: 10.4236/ojg.2014.48032.

References

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Cranial Magnetic Resonance Spectroscopy: An Update of Metabolites and a Special Emphasis on Practical Points

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http://www.scirp.org/journal/PaperInformation.aspx?PaperID=51442#.VGqid2fHRK0

ABSTRACT

Magnetic resonance spectroscopy (MRS) could be used for dozens of metabolites [1]. In this paper we will focus especially on proton (hydrogen) MRS. Generally published literatures consist of reviews and articles about metabolites are long, complicated and emphasise on physical or on technical data. But with this article, we will try to explain basically how MRS could be used in daily practice of radiologists. First of all we tried to search all current literature only referencing the main ones to make this review and we want all of our colleagues to give feedback about this review. With collection of all these trick points and line up to appropriate order, it is possible to make this review a common guide for radiologists and a useful tool while reporting MRS.

Cite this paper

Yildirim, D. , Tutar, O. , Alis, D. , Kuyumcu, G. and Bakan, S. (2014) Cranial Magnetic Resonance Spectroscopy: An Update of Metabolites and a Special Emphasis on Practical Points. Open Journal of Medical Imaging, 4, 163-171. doi: 10.4236/ojmi.2014.44023.

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Controlled-Release Analysis of Potassium Permanganate Using PMMA Matrix

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http://www.scirp.org/journal/PaperInformation.aspx?PaperID=51157#.VFghp2fHRK0

ABSTRACT

Excess amount of potassium permanganate has often been used in-situ for chemical oxidation of contaminated sites. The consequences are not limited to secondary contamination and cost but also inefficient remediation. Encapsulation of permanganate using PMMA enables controlled dissolution of the oxidant and aids long-term processes. This paper focuses on the oxidant release efficiency from polymer matrix and analysis of data using existing models for glassy polymers. The efficiency profile obtained using mass ratios of 2:1, 4:1, and 8:1 of PMMA to KMnO4 showed a decrease in the extent of release with increasing mass ratio with 79%, 55.35% and 33.59% respectively. Patches were noticed on the surfaces of PMMA after the release of KMnO4, these were attributed to crevices created by the non-fickian diffusion of the oxidant.

Cite this paper

Ighere, J. and Chawla, R. (2014) Controlled-Release Analysis of Potassium Permanganate Using PMMA Matrix. Journal of Minerals and Materials Characterization and Engineering, 2, 539-544. doi: 10.4236/jmmce.2014.26055.

References

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Identification of N-Methyl Bis(2-(Alkyloxy-Alkylphosphoryloxy)Ethyl) Amines by LC-HRMS/MS

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http://www.scirp.org/journal/PaperInformation.aspx?PaperID=49607#.VBZRz6N2W3M

Identification of N-Methyl Bis(2-(Alkyloxy-Alkylphosphoryloxy)Ethyl) Amines by LC-HRMS/MS.

ABSTRACT

N-Methyl bis(2-(alkyloxy-alkylphosphoryloxy)ethyl)amines, which are abbreviated as PNPs, are a series of new skeleton chemicals belonging to schedule 2.B.04 chemicals of Chemical Weapons Convention (CWC). PNPs are important markers of chemical warfare agents because they are structurally relative to both nerve agents and N-mustards. In this study, fragmentation pathways of the most characteristic fragment ions in Q-TOF mass spectrometry were proposed based on the information from accurate mass and secondary fragmentations of product ions scan experiments. Results indicated that the base ion in LC/HRMS was the quasi-molecular ion [M+H]+. In LC-HRMS/MS, it was [M+H-CnH2n+1P(O)(OH)CmH2m+1O]+ fragment ion which was formed by losing an alkyloxy alkylphosphoryloxy group from the quasi-molecular ion. The diagnostic ion m/z84.0814 was identified as [C5H10N]+, which was the group of (CH2=CH)2N+(H)CH3. PNPs have two protonated centers. One is on the N atom, the other is on the O atom (P=O). O-n-propyl PNPs generally exhibited two fragmentation pathways. Firstly, the quasi-molecular ion [M+H]+ lost a propoxy alkylphosphoryloxy group to produce [R1P(OH+)(O-n-C3H7)OCH2CH2N(CH3)CH=CH2]+, which could be fragmented further to produce [C5H10N]+ ion. Secondly, [R1P(OH+)(O-n-C3H7) OCH=CH2]+ ions were produced from [M+H]+ and fragmented further to produce the abundant ions [R1P(OH+)(OH)OCH =CH2]. However, O-isopropyl PNPs characteristically produced weak fragment ions [M+H-C3H6]+, which were presumably formed via loss of CH3CH=CH2 from [M+H]+. Other PNPs showed similar fragmentation pathways as O-n-propyl PNPs. On the summarization of the MS fragmentation pathways of PNPs, LC-HRMS/MS quantitative and qualitative methods were developed and applied to analyze N-Methyl bis(2-(butoxy-methylphosphoryloxy)ethyl]amine in high background organic samples. The analytical results had successfully supported the sample preparation for the 33rd official proficiency test of Organization for Prohibition of Chemical Weapons (OPCW).

Cite this paper

Yu, H. , Liu, S. , Sun, D. , Pei, C. and Xiang, Y. (2014) Identification of N-Methyl Bis(2-(Alkyloxy-Alkylphosphoryloxy)Ethyl) Amines by LC-HRMS/MS. American Journal of Analytical Chemistry, 5, 820-827. doi: 10.4236/ajac.2014.513091.
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