Journals
2025 EN
Priyadarshini Sifan · Biswal Adyashree Aradhana · Sahu Sudam Charan
Curcuma , a taxonomically variable genus of the family Zingiberaceae is well known for its nutritional, medicinal and economical significance. However, the diversity, distribution and taxonomic identity of the taxon is still vague due to the phenotypic plasticity, overlapping of morphological characters, unavailability of type specimens and imprecise original description. Therefore, this study aims to explore the diversity, distribution and find out the major contributing characters for species delimitation of the genus Curcuma in eastern India. A set of 41 taxonomic characters were obtained from morphological and morphometric analysis of nine species reported from natural habitats of Odisha. Cluster analysis and principal component analysis (PCA) were employed to study the similarity and variation among the species. The PCA analysis revealed that plant height (86.79%) and petiole length (40.48%) are the two major contributing morphological characters for delimitation of the taxa. This study provides a suitable identification key to correctly identify Curcuma species in the field.
Journals
2025 EN
Lahre Rajeshwari Prabha · Upadhyay Ratnakar · Kunjam Shriram
+1 more
This study explored the secondary metabolites of Andrographis paniculata , a plant of significant ethnomedicinal importance with broad pharmacological properties. Phytochemical screening was performed using petroleum ether, chloroform, methanol and water extracts from the leaves, stems and roots of the plant using planar chromatography such as TLC and HPTLC. Seasonal variations in secondary metabolite content were analyzed, highlighting the presence of terpenoids, steroids, flavonoids, saponins, alkaloids, tannins and glycosides. HPTLC analysis revealed up to 10 bands in chloroform-based root extracts and nine bands in methanol-based leaf and stem extracts. Key metabolites, including andrographolide, β-sitosterol, 14-deoxyandrographolide, andrograpanine, rutin and quercetin were identified by comparing Rf values and chromatograms with standard references. Drug-likeness evaluation using Lipinski’s rule indicated that all compounds, except rutin, were compliant. Molecular docking studies assessed their binding affinities with diabetes-related proteins, including human glucokinase (PDB ID: 4IXC) and 11 beta-HSD1 inhibitors (PDB ID: 4K1L). β-sitosterol exhibited the highest binding affinity (-10.7 kcal/mol) with 4K1L, while 14-deoxyandrographolide showed significant interaction with 4IXC (-8.3 kcal/mol). These findings highlight the potential antidiabetic properties of A. paniculata metabolites, reinforcing its medicinal value for pharmaceutical applications.
Journals
2025 EN
Bhaumik Sanjukta · Sahu Sudhansubala
The present study explores the complexities of motherhood in Bengali middle-class families, where mothers are traditionally viewed as primary caregivers. Despite societal shifts and increased female workforce participation, mothers still face pressure to prioritize intensive mothering. Through qualitative analysis, the research explores how employed mothers balance work and childcare responsibilities, shedding light on their agency and empowerment within patriarchal structures. Findings reveal a nuanced landscape where mothers navigate societal expectations while striving for autonomy. Support systems, changing socio-economic dynamics, and technological advancements contribute to reshaping maternal roles. Mothers, though not uniformly identifying as feminists, challenge traditional norms, embracing an egalitarian approach to mothering. The study underscores the resilience of mothers in negotiating patriarchal constraints, highlighting their capacity to foster empowerment for themselves and their children within familial and societal contexts. This qualitative study conducted in-depth interviews with 37 employed mothers representing diverse professions and roles.
Journals
2025 EN
Sahu Shubhranshee Sanshlishta · Mishra Rukmini · Joshi Raj Kumar
Pleurolobus gangeticus , also known as ‘Salparni’, is a valuable herb with significant medicinal properties. Previous studies on the plant have only used conventional GC-MS to analyse its metabolites. In this study, we utilised two-dimensional gas chromatography and time-of-flight mass spectrometry to precisely characterise the shoot and root volatiles of Pleurolobus gangeticus . The ethyl acetate extract of both tissues revealed 50 prominent volatile phytoconstituents in each, accounting for 99.9% and 100.1% of the total volatiles, respectively. The most abundant chemicals found in the root were alcohols (19%) and fatty acids (17%), while the shoot primarily contained organic compounds (24%) and esters (20%). The major phytoconstituents in the root were hexadecanoic acid, 2-hydroxy-1ethyl ester (16.1%), octadecanoic acid, and 2,3-dihydroxypropyl ester (10.5%). Conversely, the shoot was dominated by n-hexadecanoic acid (9.1%), linoleic acid (7.4%), and neophytadiene (5.6%). These findings highlight the potential of Pleurolobus gangeticus for further research and development in medicinal applications.
Journals
2025 EN
Srivastava Deepak Kumar · Sahu Ashutosh · Maurya Ram Sajeevan
This work focused on a comparative study of experimental observation of phase evolution during mechanical alloying (MA) of Ti-Fe-Si eutectic powder compositions (Fe 42 Ti 14.5 Si 43.5 (E 1 ), Fe 25 Ti 7 Si 68 (E 2 ), Fe 58 Ti 8.5 Si 33.5 (E 3 ) and Fe 29 Ti 66 Si 5 (E 4 )) using hardened steel and tungsten carbide (WC) grinding media. The Ti-Fe-Si-based system is cheaper and the amorphous alloy of this system could be a potential candidate for bioimplant materials. XRD analysis revealed the evolution of various intermetallic phases during milling depending on the powder composition and the type of grinding media. Formation of a partial amorphous phase was observed in E 2 and E 4 powders after 60 h of MA using hardened steel grinding media. However, with prolonged MA up to 100 h different complex intermetallic phases appeared under the effect of various contaminations coming from the grinding media. When WC grinding media was used for E 1 and E 4 powder compositions, the wear of the grinding media increased due to the strong affinity of Ti with C, leading to a chemical reaction and formation of TiC and thus higher level of contaminations got incorporated with the powder materials to form TiC along with other intermetallic phases and there was no trace of amorphous phase formation.
Journals
2025 EN
Choudhury Satyam · Mandal R. K. · Basu Joysurya
Commensurately modulated orthorhombic (β 2 ) Bi 10 Cr 2 O 21 and multicomponent Bi 10 (Cr 1.5 x Mn x ) 2 O 21 and Bi 10 (Cr x Fe 0.5 x Mn x ) 2 O 21 ( x = 0.4) have been synthesised by the solid-state synthesis route. The commensurately modulated phases exhibit a spectrum of colours due to the change in their electronic structure and defect concentration, which may open up new doors for the application of such multicomponent oxides. The orthorhombic fundamental modulating unit and the modulated supercell have been deciphered with a cube-on-cube orientation relationship between them. The modulation behaviour in (β 2 ) Bi 10 Cr 2 O 21 may be altered by changing the chemistry and defect concentration, which is achieved by changing the initial molar ratio of the precursor oxides. The ability of the (β 2 ) Bi 10 Cr 2 O 21 phase to accommodate non-stoichiometry and defects, along with a suitable phase field disposition, has been exploited to design the commensurately modulated multicomponent oxides. Modulating fundamental unit and the modulated supercell in the multicomponent oxides is quite similar to that of (β 2 ) Bi 10 Cr 2 O 21, and a similar orientation relationship is observed between them. A trade-off between the configurational entropy and the strain energy stabilises the multicomponent oxides.
Journals
2025 EN
Mishra Shekhar · Sahoo Satyaban · Sahu Anuradha
+2 more
This research investigates the dynamics of connectedness among cryptocurrency and various risk factors, including oil price demand and supply shocks, EPU, GPR, and the ADS business conditions index using the quantile time-frequency connectedness approach. The findings reveal that cryptocurrency behaves as a net receiver of shocks in the short term but transitions to a net transmitter over the long term. Critical sources of both short- and long-term shocks are attributed to oil price demand, supply fluctuations, and GPR. However, during extreme events like the COVID−19 pandemic and the Russia-Ukraine war, cryptocurrency, oil shocks, and other indices alternately become net transmitters and receivers of shocks depending on time frames and quantile ranges. During periods of heightened market uncertainty, monitoring the interconnected behavior of these variables is critical for investors and policymakers aiming to predict market shifts and manage risks effectively.
Journals
2025 EN
Bhope Kedar · Mehta Mayur · Khirwadkar Samir
+7 more
Plasma-facing components (PFCs) with tungsten armor material are expected to withstand the extreme incident heat flux conditions in a nuclear fusion tokomak. In situ measurements of thermal-mechanical behavior under high heat flux (HHF) conditions are important and essential. With this aim, a novel three-dimensional (3D) (stereo) digital image correlation (DIC) diagnostics with an optical mirror adapter in a single optical view port is established for in situ measurements of a full-field strain and deformation profile on PFCs during heat flux testing in the High Heat Flux Test Facility (HHFTF) at the Institute for Plasma Research. In the present work, the thermally induced field deformations of a reflector divertor mock-up under the heat flux conditions of 200 hHF cycles at 5 MW/m 2 and 1000 hHF cycles at 7 MW/m 2 are measured using the developed 3D-DIC diagnostics. Calibration and validation qualification tests are conducted on the experimental platform as well as numerical COMSOL simulation to ensure the performance and the accuracy of the 3D-DIC diagnostics system. Because of periodic thermal stress, the thermomechanical behavior cases of bonded and de-bonded W-Cu tile interface are captured in situ by measured strain curves and compared with pre-ultrasonic and post-ultrasonic test analyses. Full-field strain and displacement profiles on the reflector divertor mock-up during heat flux testing are also obtained. The 3D-DIC diagnostics results demonstrate the feasibility and accuracy for in situ strain and displacement measurements of PFCs during HHF tests in HHFTF.
Journals
2025 EN
Sahu Dhaneshwar Prasad · Prusty Jagesh Kumar · Mohanty Sukesh Chandra
The study focuses on mechanical characterization and adaptive neuro-fuzzy inference system (ANFIS)-based prediction modeling of MWCNT-filled Luffa cylindrica hybrid core-based sandwich plates. Experiments determine natural frequencies using modal impact hammer tests with a Fast Fourier Transform (FFT) analyzer. Elastic properties from tensile tests utilized for numerical simulations of natural frequencies in ABAQUS, showing high consistency with experimental results. SEM analysis characterizes the fiber-matrix bond in the hybrid core. ANFIS modeling establishes input–output relationships for unseen data sets. Comparisons of numerical simulations with ANFIS predictions demonstrate an accuracy within a 5% margin of error, providing insights into dynamic behavior and potential applications.
Journals
2025 EN
Biswas Mahargha · Sahu Sanjeev A.
The present analytical investigation focuses on longitudinal quasi-plane ( qP ) waves scattering in N -type piezoelectric semiconductor (PSC) halfspace, generating four reflected waves: qP , qSV , electro-acoustic, and carrier plane. It analyzes wave amplitudes under two conditions: inviscid liquid loading and impedance boundary conditions, deriving a secular equation and determining reflection/transmission coefficients. These calculations rely on 3D constitutive relations and equilibrium equations. Furthermore, the study also extends to the calculation of bulk energy flux. The outcomes of the study may provide insights into the applications of piezoelectric semiconductors in underwater navigation or detection systems and electromagnetic transducers.