Pub Date : 2015-06-01DOI: 10.1016/J.MD.2016.01.001
P. S. N. Banu, S. Rani
{"title":"Beta transus prediction of titanium alloys through integration of artificial neural network and multifactor dimensionality reduction analyses","authors":"P. S. N. Banu, S. Rani","doi":"10.1016/J.MD.2016.01.001","DOIUrl":"https://doi.org/10.1016/J.MD.2016.01.001","url":null,"abstract":"","PeriodicalId":100888,"journal":{"name":"Materials Discovery","volume":"16 1","pages":"16-23"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78504512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-01DOI: 10.1016/j.md.2016.05.001
M. Raghasudha , D. Ravinder , P. Veerasomaiah
Chromium doped magnesium nano ferrites with the formula MgCrxFe2−xO4 (0 ≤ x ≤ 1) were prepared using the citrate-gel method. The electrical resistivity (ρ) was measured in the temperature range of 200–700 °C and was found to decrease with an increase in temperature ensuring the semiconducting nature of the prepared ferrites. The corresponding activation energies for conduction were obtained from the plot of log ρ vs. 1000/T for all of the compositions, which display two slopes of separate regions. It was found that the activation energy was higher in the paramagnetic region than in the ferromagnetic region. With an increase in Cr composition, the electrical resistivity was found to decrease.
{"title":"Electrical resistivity studies of Cr doped Mg nano-ferrites","authors":"M. Raghasudha , D. Ravinder , P. Veerasomaiah","doi":"10.1016/j.md.2016.05.001","DOIUrl":"https://doi.org/10.1016/j.md.2016.05.001","url":null,"abstract":"<div><p>Chromium doped magnesium nano ferrites with the formula MgCr<sub><em>x</em></sub>Fe<sub>2−<em>x</em></sub>O<sub>4</sub> (0<!--> <!-->≤<!--> <em>x</em> <!-->≤<!--> <!-->1) were prepared using the citrate-gel method. The electrical resistivity (<em>ρ</em>) was measured in the temperature range of 200–700<!--> <span>°C and was found to decrease with an increase in temperature ensuring the semiconducting nature of the prepared ferrites. The corresponding activation energies for conduction were obtained from the plot of log </span><em>ρ</em> vs. 1000/<em>T</em> for all of the compositions, which display two slopes of separate regions. It was found that the activation energy was higher in the paramagnetic region than in the ferromagnetic region. With an increase in Cr composition, the electrical resistivity was found to decrease.</p></div>","PeriodicalId":100888,"journal":{"name":"Materials Discovery","volume":"2 ","pages":"Pages 50-54"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.md.2016.05.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72115565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-01DOI: 10.1016/J.MD.2016.03.005
D. M. Gurudatt, K. Mohana, H. C. Tandon
{"title":"Adsorption and corrosion inhibition characteristics of some organic molecules containing methoxy phenyl moiety on mild steel in hydrochloric acid solution","authors":"D. M. Gurudatt, K. Mohana, H. C. Tandon","doi":"10.1016/J.MD.2016.03.005","DOIUrl":"https://doi.org/10.1016/J.MD.2016.03.005","url":null,"abstract":"","PeriodicalId":100888,"journal":{"name":"Materials Discovery","volume":"22 1","pages":"24-43"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83551610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-01DOI: 10.1016/j.md.2016.03.005
Doddahosuru M. Gurudatt , Kikkeri N. Mohana , Harmesh C. Tandon
The influence of three newly synthesized molecules on the corrosion inhibition of mild steel in acid media is studied. From Tafel slopes, it is evident that the anodic reaction is more polarized. Impedance study reveals that the increase in Rct values can be attributed to the formation of a protective film and the decrease in Cdl values is due to an increase in the thickness of the electrical double layer. Total energy, EHOMO and softness are in the order of 3-MPTT > 4-AMTT > 3-MAH and dipole moment, ELUMO, energy gap, ionization potential and hardness are in the order of 3-MPTT < 4-AMTT < 3-MAH.
{"title":"Adsorption and corrosion inhibition characteristics of some organic molecules containing methoxy phenyl moiety on mild steel in hydrochloric acid solution","authors":"Doddahosuru M. Gurudatt , Kikkeri N. Mohana , Harmesh C. Tandon","doi":"10.1016/j.md.2016.03.005","DOIUrl":"https://doi.org/10.1016/j.md.2016.03.005","url":null,"abstract":"<div><p><span>The influence of three newly synthesized molecules on the corrosion inhibition of mild steel in acid media is studied. From Tafel slopes, it is evident that the anodic reaction is more polarized. Impedance study reveals that the increase in </span><em>R</em><sub>ct</sub> values can be attributed to the formation of a protective film and the decrease in <em>C</em><sub>dl</sub> values is due to an increase in the thickness of the electrical double layer. Total energy, <em>E</em><sub>HOMO</sub> and softness are in the order of 3-MPTT<!--> <!-->><!--> <!-->4-AMTT<!--> <!-->><!--> <!-->3-MAH and dipole moment, <em>E</em><sub>LUMO</sub>, energy gap, ionization potential and hardness are in the order of 3-MPTT<!--> <!--><<!--> <!-->4-AMTT<!--> <!--><<!--> <!-->3-MAH.</p></div>","PeriodicalId":100888,"journal":{"name":"Materials Discovery","volume":"2 ","pages":"Pages 24-43"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.md.2016.03.005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72106037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-01DOI: 10.1016/j.md.2016.01.001
P.S. Noori Banu, S. Devaki Rani
To predict beta transus of titanium alloys, artificial neural network (ANN) and multiple linear regression (MLR) models were developed based on the alloy composition. Mo, V, Zr, Cr, Fe, Al, Si and O were the principle determinants of beta transus. The ‘r2’ (92.0% vs. 90.7%) and mean predicted error [training (1.4% vs. 2.8%) and testing (2% vs. 2.4%)] pattern in ANN and MLR models suggest superior performance of ANN model. Multifactor dimensionality reduction analysis showed interactions among Al, O and Cr, which were confirmed by the ANN model. The positive association of beta transus with aluminium equivalent and inverse association with molybdenum equivalent was demonstrated.
{"title":"Beta transus prediction of titanium alloys through integration of artificial neural network and multifactor dimensionality reduction analyses","authors":"P.S. Noori Banu, S. Devaki Rani","doi":"10.1016/j.md.2016.01.001","DOIUrl":"https://doi.org/10.1016/j.md.2016.01.001","url":null,"abstract":"<div><p><span>To predict beta transus of titanium alloys, artificial neural network (ANN) and multiple linear regression (MLR) models were developed based on the alloy composition. Mo, V, Zr, Cr, Fe, Al, Si and O were the principle determinants of beta transus. The ‘</span><em>r</em><sup>2</sup><span>’ (92.0% vs. 90.7%) and mean predicted error [training (1.4% vs. 2.8%) and testing (2% vs. 2.4%)] pattern in ANN and MLR models suggest superior performance of ANN model. Multifactor dimensionality reduction analysis showed interactions among Al, O and Cr, which were confirmed by the ANN model. The positive association of beta transus with aluminium equivalent and inverse association with molybdenum equivalent was demonstrated.</span></p></div>","PeriodicalId":100888,"journal":{"name":"Materials Discovery","volume":"2 ","pages":"Pages 16-23"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.md.2016.01.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72115566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-01DOI: 10.1016/j.md.2016.03.004
Charu Lata Dube , Subhash C. Kashyap , D.C. Dube
In the present paper an attempt has been made to understand the growth mechanism of SiGe alloy nanowires synthesized in H-mode cylindrical microwave cavity resonator at 900 °C in a short time of nearly 5 min. The role of ambience, microwave H-field, duration of interaction with microwaves and germanium concentration in the starting precursor have been investigated. It is believed that H-field of microwaves efficiently interacts with the starting precursor powder in air ambience and results in superheating/supersaturation, which gives rise to the formation of innumerable critical sized nuclei via heterogeneous nucleation, leading to one dimensional growth of cylindrical nanowires.
{"title":"Growth mechanism of SiGe alloy nanowires synthesized in H-mode cylindrical cavity resonator","authors":"Charu Lata Dube , Subhash C. Kashyap , D.C. Dube","doi":"10.1016/j.md.2016.03.004","DOIUrl":"https://doi.org/10.1016/j.md.2016.03.004","url":null,"abstract":"<div><p><span>In the present paper an attempt has been made to understand the growth mechanism of SiGe alloy<span> nanowires synthesized in H-mode cylindrical microwave cavity resonator at 900</span></span> <!-->°C in a short time of nearly 5<!--> <span>min. The role of ambience, microwave H-field, duration of interaction with microwaves and germanium concentration in the starting precursor have been investigated. It is believed that H-field of microwaves efficiently interacts with the starting precursor powder in air ambience and results in superheating/supersaturation, which gives rise to the formation of innumerable critical sized nuclei via heterogeneous nucleation, leading to one dimensional growth of cylindrical nanowires.</span></p></div>","PeriodicalId":100888,"journal":{"name":"Materials Discovery","volume":"2 ","pages":"Pages 44-49"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.md.2016.03.004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72107374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-02-12DOI: 10.1016/J.MD.2016.03.002
A. Shokry, P. Staahle
{"title":"A methodology for using Kalman filter to determine material parameters from uncertain measurements","authors":"A. Shokry, P. Staahle","doi":"10.1016/J.MD.2016.03.002","DOIUrl":"https://doi.org/10.1016/J.MD.2016.03.002","url":null,"abstract":"","PeriodicalId":100888,"journal":{"name":"Materials Discovery","volume":"9 1","pages":"1-15"},"PeriodicalIF":0.0,"publicationDate":"2015-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82440928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-01-01DOI: 10.1016/j.md.2015.11.002
Anuraag Boddupalli , Kaitlin M. Bratlie
{"title":"Multimodal imaging of harmonophores and application of high content imaging for early cancer detection","authors":"Anuraag Boddupalli , Kaitlin M. Bratlie","doi":"10.1016/j.md.2015.11.002","DOIUrl":"https://doi.org/10.1016/j.md.2015.11.002","url":null,"abstract":"","PeriodicalId":100888,"journal":{"name":"Materials Discovery","volume":"1 ","pages":"10-20"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.md.2015.11.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72112347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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