Stabilization of expansive soil using industrial wastes

Mohanty, Soumendra K.,Pradhan, Pradip K.,Mohanty, Chitta R. Techno-Press 2017 Geomechanics & engineering Vol.12 No.1

Swelling and shrinkage characteristics of expansive fine grained soil cause volumetric changes followed by distress and damage to the structures. Soil stabilization can be explained as the alteration of the soil properties by chemical, mechanical or any other means in order to enhance the engineering properties of the soil. Utilization of industrial wastes in soil stabilization is cost effective and environment friendly. This paper presents an experimental study on stabilization of expansive soil using industrial wastes, viz. fly ash and dolochar. The paper includes the evaluation of engineering properties like unconfined compressive strength and California bearing ratio (CBR) of expansive soil collected from Balasore district of Odisha stabilized with fly ash and dolochar in different proportions and to predict the influence of these additives on engineering properties and strength characteristics of expansive soil. Both fly ash and dolochar were found to increase the CBR and decrease many index properties such as liquid limit, plastic limit, plasticity index, swelling index and UCS, thus enhancing the strength parameters of expansive soil.

RF power dependence of refractive index of room temperature sputtered ZnO:Al thin films

Mohanty, Bhaskar Chandra,Yeon, Deuk Ho,Yun, Jae Ho,Cho, Jun Sik,Cho, Yong Soo Springer-Verlag 2014 APPLIED PHYSICS A MATERIALS SCIENCE AND PROCESSING Vol.115 No.1

Fluctuations in global surface scaling behavior in sputter-deposited ZnO thin films

Mohanty, B. C.,Choi, H. R.,Cho, Y. S. Editions de Physique 2011 Europhysics letters Vol.93 No.2

<P>Quantitative analysis of the roughness scaling behavior, which is critical in understanding the evolution of surface microstructure, is reported for ZnO thin films grown by RF magnetron sputtering. The strong dependence of global and local growth parameters on the applied RF powers can be highlighted as a unique observation, which has not been available from the typical super-rough scaling studies. For example, the global growth exponent increased from 0.53± 0.02 at 75 W to 1.03± 0.01 at 200 W. The observed dominant anisotropic growth of crystallites at high powers is believed to be the main reason for the power-dependent roughening behavior.</P>

Transcriptional regulatory mechanism of <i>alcohol dehydrogenase 1</i> -deficient mutant of rice for cell survival under complete submergence

Mohanty, Bijayalaxmi,Takahashi, Hirokazu,de los Reyes, Benildo G.,Wijaya, Edward,Nakazono, Mikio,Lee, Dong-Yup Springer US 2016 Rice Vol.9 No.1

<P><B>Background</B></P><P>Rice is the only crop that germinates and elongates the coleoptile under complete submergence. It has been shown that <I>alcohol dehydrogenase 1 (ADH1)-</I>deficient mutant of rice with <I>reduced alcohol dehydrogenase activity</I> (<I>rad</I>) and reduced ATP level, is viable with much reduced coleoptile elongation under such condition. To understand the altered transcriptional regulatory mechanism of this mutant, we aimed to establish possible relationships between gene expression and <I>cis</I>-regulatory information content.</P><P><B>Findings</B></P><P>We performed promoter analysis of the publicly available differentially expressed genes in <I>ADH1</I> mutant. Our results revealed that a crosstalk between a number of key transcription factors (TFs) and different phytohormones altered transcriptional regulation leading to the survival of the mutant. Amongst the key TFs identified, we suggest potential involvement of MYB, bZIP, ARF and ERF as transcriptional activators and WRKY, ABI4 and MYC as transcriptional repressors of coleoptile elongation to maintain metabolite levels for the cell viability. Out of the repressors, WRKY TF is most likely playing a major role in the alteration of the physiological implications associated with the cell survival.</P><P><B>Conclusions</B></P><P>Overall, our analysis provides a possible transcriptional regulatory mechanism underlying the survival of the <I>rad</I> mutant under complete submergence in an energy crisis condition and develops hypotheses for further experimental validation.</P><P><B>Electronic supplementary material</B></P><P>The online version of this article (doi:10.1186/s12284-016-0124-3) contains supplementary material, which is available to authorized users.</P>

Structural and Raman Scattering Properties of ZnO:Al Thin Films Sputter-Deposited at Room Temperature

Mohanty, Bhaskar Chandra,Kim, Byeong Kon,Yeon, Deuk Ho,Jo, Yeon Hwa,Choi, Ik Jin,Lee, Seung Min,Cho, Yong Soo The Electrochemical Society 2012 Journal of the Electrochemical Society Vol.159 No.2

Pattern of Syringomyelia in Presumed Idiopathic and Congenital Scoliosis

Mohanty Simanchal Prosad,Kanhangad Madhava Pai,Saifuddin Sibin,Narayana Kurup Jayakrishnan K. 대한척추외과학회 2021 Asian Spine Journal Vol.15 No.6

Study Design: Retrospective study. Purpose: This study was undertaken to compare the patterns of syringomyelia in patients with presumed idiopathic and congenital scoliosis. Overview of Literature: The incidence of neuraxial anomalies presenting as idiopathic scoliosis ranges from 2% to 14%; the common ones are idiopathic syringomyelia (IS) and Chiari malformation type 1 (CM1) with syringomyelia. Some authors have speculated that scoliosis is caused by the asymmetrical compression of anterior horn cells by a syrinx, which causes an imbalance of the trunk musculature. In congenital scoliosis, syringomyelia is the second commonest cord anomaly, and the deformity progression depends upon the underlying vertebral abnormality, the location of the abnormality, and the age of patient, and is independent of the intraspinal anomaly. Methods: We analyzed the radiological records of 44 consecutive patients with scoliosis and syringomyelia. Of these 44 patients, 13 had IS, 12 had CM1, and 19 had congenital scoliosis. The radiographs were evaluated to determine the curve magnitude, sagittal alignment, side of convexity, and type of vertebral anomaly, if any. T1- and T2-weighted magnetic resonance imaging of the whole spine was analyzed to determine the presence of craniovertebral anomalies, syrinx length, syrinx diameter, and syrinx-cord ratio (SCR). Results: The frequency of left convex curves was 26.1%, with no significant differences across the three groups. The mean length of the syrinx was 7.2±4.9 vertebral levels, and the mean SCR was 0.39±0.2. The mean syrinx length was significantly higher in patients with CM1 and IS, compared to patients with congenital scoliosis. The mean SCR was highest in patients with CM1. In congenital scoliosis, syringomyelia was seen most frequently in patients with a failure of formation, and 63.2% had concomitant cord anomalies. Conclusions: Syrinxes were smaller in size and length in patients with congenital scoliosis, and are distinct from those seen in IS and CM1.

Synthesis and characterization of poly(ether sulfone) block copolymers containing pendent quaternary ammonium- and imidazolium groups as anion exchange membranes

Mohanty, Aruna Kumar,Devaraju, Subramani,Kim, Nowon,Paik, Hyun-jong Elsevier 2018 Solid state ionics Vol.314 No.-

<P><B>Abstract</B></P> <P>A class of poly(ether sulfone) (FPES) block copolymers containing pendent quaternary ammonium (QA) and imidazolium (IM) groups were prepared as anion exchange membranes by reaction involving nucleophilic substitution, benzylic bromination, quaternization and anion exchange with hydroxide ions. Highly reactive hexafluorobenzene (HFB) was utilized as a linkage group for relatively low temperature (e.g., 105°C) coupling between hydrophobic and precursor hydrophilic oligomer blocks. The phase separated morphology, water uptake, swelling ratio, conductivity, and chemical stability of the resultant copolymer membranes were also investigated. The hydroxide conductivity of the ionomer membranes (IEC~2.0 mequiv./g) was 21–22mS/cm and 56–63mS/cm at 30°C and 80°C respectively. The FPES-IM membrane showed relatively very good dimensional integrity in high pH solution, whereas under the similar condition the FPES-QA membrane broke into pieces. However, the degradation of the imidazolium cations in FPES-IM was relatively faster in comparison to the ammonium cations in FPES-QA.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Anion exchange membranes were prepared using hexafluorobenzene as a linkage group. </LI> <LI> Quaternary ammonium has better alkaline stability than imidazolium cations. </LI> <LI> Block copolymer anion exchange membranes exhibited nano-phase separation in AFM. </LI> <LI> Good hydroxide ion conductivity up to 63mS/cm at 80°C was observed. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Fabrication of Single Crystalline Cadmium Nanowires by a Facile Low Temperature Vapor Phase Method

Mohanty, Paritosh,Park, Jeunghee,Lee, Gangho,Kim, Bongsoo American Scientific Publishers 2006 Journal of nanoscience and nanotechnology Vol.6 No.11

<P>Single-crystalline cadmium nanowires were successfully fabricated by vaporization of cadmium metal powders in a horizontal quartz tube furnace at 250 °C. The vaporization was carried out for 30 minutes and yielded nanowires of diameters of 80 to 250 nm and lengths up to several tens of microns. The nanowires were deposited on a Si (111) substrate kept at the lower temperature zone (150-175 °C) of the furnace. When the deposition temperature was lower than this, hexagonal nanodisks were produced. The possible mechanism for the formation of the obtained nanostructures is discussed.</P>

Identification of candidate network hubs involved in metabolic adjustments of rice under drought stress by integrating transcriptome data and genome-scale metabolic network

Mohanty, B.,Kitazumi, A.,Cheung, C.Y.M.,Lakshmanan, M.,de los Reyes, B.G.,Jang, I.C.,Lee, D.Y. Elsevier Scientific Publishers Ireland Ltd 2016 Plant science Vol.242 No.-

In this study, we have integrated a rice genome-scale metabolic network and the transcriptome of a drought-tolerant rice line, DK151, to identify the major transcriptional regulators involved in metabolic adjustments necessary for adaptation to drought. This was achieved by examining the differential expressions of transcription factors and metabolic genes in leaf, root and young panicle of rice plants subjected to drought stress during tillering, booting and panicle elongation stages. Critical transcription factors such as AP2/ERF, bZIP, MYB and NAC that control the important nodes in the gene regulatory pathway were identified through correlative analysis of the patterns of spatio-temporal expression and cis-element enrichment. We showed that many of the candidate transcription factors involved in metabolic adjustments were previously linked to phenotypic variation for drought tolerance. This approach represents the first attempt to integrate models of transcriptional regulation and metabolic pathways for the identification of candidate regulatory genes for targeted selection in rice breeding.

A Strong Designated Verifiable DL Based Signcryption Scheme

Mohanty, Sujata,Majhi, Banshidhar Korea Information Processing Society 2012 Journal of information processing systems Vol.8 No.4

This paper presents a strong designated verifiable signcryption scheme, in which a message is signcrypted by a signcryptor and only a specific receiver, who called a "designated verifier", verifies it using his own secret key. The scheme is secure, as an adversary can not verify the signature even if the secret key of the signer is compromised or leaked. The security of the proposed scheme lies in the complexity of solving two computationally hard problems, namely, the Discrete Logarithm Problem (DLP) and the Integer Factorization Problem (IFP). The security analysis of the scheme has been done and it is proved that, the proposed scheme can withstand an adaptive chosen ciphertext attack. This scheme can be very useful in organizations where there is a need to send confidential documents to a specific recipient. This scheme can also be applicable to real life scenarios, such as, e-commerce applications, e-banking and e-voting.