Journals
2025 EN
Sahu Prakash Chandra · Prusty Ramesh Chandra · Panda Sidhartha
The uncertain nature of renewable sources and load demand makes modern power systems highly complex and causes the active power imbalance and frequency fluctuations. Intelligent controllers are to be designed for active power management to keep frequency steady and nominal under any uncertainty. Therefore, this article proposes a robust fractional ordered three-degree of freedom PID (3DOF-FOPID) controller for active power management of a wind/solar farm-integrated hybrid power system under various disturbances. The optimum parameters of the suggested 3DOF-FOPID controller are selected with employing a novel artificial intelligence (AI) technique-based modified-cuckoo search algorithm (M-CSA) under various operating. The performance of the suggested 3DOF-FOPID controller over 3DOF-PID and PID controller has been investigated in a common power system model and technique. The suggested 3DOF-FOPID controller offers more flexibility and controllability over other controllers in response to frequency regulation of hybrid power system. It is revealed from outcomes that under common M-CSA technique, the percentage improvement in settling time of deviation in area-one frequency ( ΔF 1 ) with 3DOF-FOPID controller over 3DOF and PID are 122.4% and 328.6% respectively. Finally, it is verified that proposed 3DOF-FOPID approach is an efficient tool to regulate frequency of the hybrid power system under any operating situations.
Journals
2025 EN
Bhatta Sunil Kumar · Mohapatra Srikanta · Sahu Prakash Chandra
+2 more
The manuscript addresses a robust three-dimensional fuzzy-PID controller (Fuzzy-3D PID) to control frequency of a diverse energy source integrated hybrid power system under various loadings. In order to obtain stability over system frequency under any disturbances, a secondary control loop called load frequency control (LFC) loop is required in the system. LFC tries to monitor power generation irrespective of load demand. Further, a novel hybridized harmony search and random search (hyHS-RS) algorithm is proposed to optimally design the suggested Fuzzy-3D PID controller. The proposed hybrid network is incorporated with integration of different diverse energy sources such as wind-plant (WP), solar-plant (SP), diesel-generator (DEG), and micro-turbine (MT) along with conventional power-generating sources like thermal system, hydro system, and nuclear power plant. The wind-plant and solar-plant exhibit large dynamics and low inertia which degrades the system frequency seriously. The proposed Fuzzy-3D PID controller makes necessary control actions over disturbed frequency and trying to amend steady nominal frequency in the system. It has been observed the percentage improvement in ITAE with proposed hyHS-RS over basic harmony search (HS) and random search (RS) are 54.5% and 201.6% respectively. Finally, proposed hyHS-RS designed Fuzzy-3D PID controller justifies its superiority through different comparative studies.
Journals
2025 EN
Khandelwal Neha · Sahu Abhishek · Yadav Sangeeta
+1 more
In 2015, the United Nations introduced the sustainable development goals (SDGs) in partnership with civil society and firms, highlighting that leading firms possess the capabilities to innovate substantial solutions at scale to achieve global sustainability. Therefore, the objective of present study is to explore the sustainable development in the context of the Indian manufacturing industry and examine the effect of triple bottom line, i.e. economic, social, and environmental dimensions on the sustainable development. Based on the literature review and expert’s opinions, hypotheses related to sustainable development and triple bottom line dimensions were developed. A survey instrument was prepared and sent to the 500 Indian manufacturing industries. Out of these 384 responses were found suitable for the study with a 76.8% response rate. All the necessary statistical analysis was carried out to ensure the reliability and validity of the questionnaire. Analysis of Moment Structure Path Modeling technique-Structural Eq. Modeling has been used for testing the research hypothesis. Further, the measurement model had shown sufficient data fit for the modeling. The results of study indicate that all significance values were found to be less than 0.05. Therefore, the null hypothesis is rejected, implying that the effectiveness of triple bottom line dimensions positively influences sustainable development. The findings of the study may be useful for academicians and managers in managing the sustainable manufacturing industry in an effective manner.
Journals
2025 UN
Sahu Prachi Rani · Tanty Dhananjay Kumar · Sahu Susanta Kumar
Coumarin derivatives (CDs) possess diverse pharmacological properties, but their antidiabetic potential is not fully explored. In this perspective, we selected 108 plant-derived CDs and investigated their antidiabetic potency, taking a panel of putative targets: AKT1, ACACB, CDK4, α-amylase, GLUT1, and PTP1B in a computer-aided drug design (CADD) platform. In addition, predicted toxicity, pharmacokinetics, bioavailability, and drug ability profiles of CDs. Further, molecular dynamics (MD) simulations were employed to observe the dynamic behaviour of the two potential CDs (sanandajin or SANA, sinkianone or SINK) and standards (glimepiride or G and resveratrol or RESV) with AKT1 at 100 nanoseconds. Overall, findings reveal that SANA and SINK exhibited stronger binding affinities with AKT1 than standards with lesser toxicity and favorable drug-ability profiles to use as bioactive therapeutic agents for the management of diabetics. The systematic CADD analyses are able to locate potential CDs and encourage further experimental studies for mainstream applications.
Journals
2025 EN
Kumari Shreeta · Sahu Sanjeev A.
This study concentrates on the propagation pattern of shear horizontal (SH) waves on the conductive liquid-loaded porous piezoelectric media. Porous piezoelectric media is composed of fluid saturated functionally graded porous piezoelectric material (FGPPM) plate and functionally graded piezoelectric material (FGPM) half-space. The functional grading is assumed to be exponential for the FGPPM layer and quadratic for the FGPM layer respectively, along the direction of thickness. The mechanical imperfection is considered at the interface of the two media. The dispersion and the attenuation curve have been plotted to describe the impact of various parameters, namely gradient parameter of both the piezoelectric material, thickness of FGPPM plate, imperfect interface parameter, relative permittivity and conductivity of the liquid medium. Also, different modes for both the dispersion and attenuation curves have been delineated to get a better insight. Dispersion equations for non-conductive liquid loaded piezo-composite have also been obtained for both electrically open and short circuit conditions. To validate the present outcome, the geometry is reduced to special cases and the outcome is matched with pre-existing results. This article may find its application in better understanding of SAW devices incorporated with liquid layer.
Journals
2025 EN
Sahu S. K. · Shaw S. · Thatoi D. N.
+1 more
Heat transfer from a surface enshrouded in a porous medium through which non-Newtonian hybrid nanofluid is flowing is of great practical importance in several fields of engineering. Cross fluid model is implemented due to its significant properties like yield stress features, flow in regions of both low and high shear rates, finite viscosity and time constant. Especially, convective flows in a porous medium are of considerable interest in view of the present and potential utilization of geothermal energy, solar energy, etc. for power production. The purpose of this paper is to present the numerical solutions of boundary-layer equations describing the steady free convection flow of non-Newtonian hybrid nanofluid in a saturated porous medium described by Forchheimer extended Darcy’s law. Flow and heat transfer characteristics with and without inertia effects are explored. Percentage of heat transfer rate (HTR) enhancement is obtained. The major outcomes of the study are that velocity of Cross hybrid nanofluid exhibits opposite effects in response to amplification of Weissenberg number and porosity parameter in both presence and absence of inertia. The heat transfer rate for quadratic radiation contributes to moderate response. Further, percentage enhancement of heat transfer rate is greater subject to disparate Weissenberg number compared to that of Brinkman number.
Journals
2025 EN
Sahu S. K. · Shaw S. · Thatoi D. N.
+2 more
The goal of the present investigation is to explore the flow and thermal behavior of non-Newtonian fluid with single-walled carbon nanotube (SWCNT)/multi-walled carbon nanotube (MWCNT) suspensions over a shrunk rotating disk subject to Darcy-Forchheimer effect. The mechanisms of suction, viscous dissipation and thermal radiation have been implemented. Entropy generation analysis is carried on. Innovated Nayak-Shaw number is modeled and its profiles analysis are narrated in a lucid manner. Noble bv4c method cum shooting technique is instrumental to devise a requisite numerical solution of the developed system of the dimension-free boundary layer equations. The outcomes of the study include amplification of non-Newtonian parameter (Casson parameter) that controls the radial and azimuthal motions. Inclusion of a significant interfacial nanolayer upgrades the heat transfer rate that in turn provides better cooling for industrial needs. Addition of more nanoparticles and a medium with high porosity (Darcy-Forchheimer effect) contribute to the entropy minimization which is ubiquitous for the greater efficiency of specific thermal systems. Nayak-Shaw number due to the fluid friction irreversibility N{S_{ff}}(0 N S ff( 0 ) }peters out and that due to porous medium irreversibility N{S_{pm}}(0 N S pm( 0 ) }ameliorates with the strengthening of porosity parameter effectively. It is obvious that the contribution of porous medium irreversibility dominates over due to fluid friction irreversibility.
Resource
2025 EN
Mishra Durga Prasad · Sahu Roja · Sahu Prafulla Kumar
+5 more
Malaria continues to pose a significant global health burden, with an estimated 263 million cases and 597,000 deaths reported in 2023, disproportionately affecting the WHO African Region. The emergence of drug-resistant Plasmodium strains has necessitated the search for novel therapeutic strategies. Sulfonamides, originally introduced as antibacterial agents, have been repurposed as promising antimalarial compounds due to their unique mechanism of action. These compounds inhibit the dihydropteroate synthase (DHPS) enzyme in the folate biosynthesis pathway, a critical process for DNA, RNA, and protein synthesis in Plasmodium species. By acting as competitive alternative to para-aminobenzoic acid (PABA), sulfonamides disrupt parasite replication and survival. Advances in structure-activity relationship studies have led to the development of sulfonamide derivatives with improved binding affinity, pharmacokinetic properties, and reduced toxicity. Combination therapies, such as sulfadoxine-pyrimethamine, exploit the synergistic inhibition of the folate pathway to enhance efficacy and mitigate resistance. This review highlights the mechanistic insights, structural advancements, and clinical applications of sulfonamide-based antimalarials, emphasizing their role in sustainable malaria control, particularly in combating multidrug-resistant strains of Plasmodium .
Journals
2025 EN
Rawat Vikas · Satyam Neelima
This study evaluated the effectiveness of microbial-induced calcite precipitation (MICP), a sustainable and eco-friendly ground improvement technique, on silty sand with varying silt content. Biotreatment was conducted using Sporosarcina pasteurii and a 0.5 M cementation solution over 7 and 14 days, with 24-hour cycles and pore volumes (PV) of 0.75 and 1. Unconfined compressive strength (UCS) and split tensile strength (STS) tests were performed to assess mechanical properties, while calcite content and microcharacterization were used to evaluate biocementation. Samples with 20% silt exhibited higher strength and CaCO 3 content than those with 40% silt. As silt content increased, UCS and STS decreased significantly. Longer treatment durations and higher cementation volumes improved strength and CaCO 3 content. A 14-day treatment increased UCS and STS by 35.29% and 56.94%, respectively, while increasing PV from 0.75 to 1 enhanced them by 23.67% and 26.45%. This study highlights the potential of MICP in stabilizing silty sand.
Journals
2025 EN
Mohanty Pradeep Kumar · Jayanthu Singam · Sahu Satya Prakash
+1 more
Oil agglomeration has gained importance owing to its simplicity and efficiency in beneficiating coal fines. In this study, high ash coal samples taken from six mines in India were put through an oil agglomeration process to investigate the usage of castor oil or blend of castor and turpentine for recovery of coal fines from coal-water slurry. The performance of the process has been evaluated based on ash rejection [AR and yield (%). Various Statistical analyses were carried out to investigate the role of various process parameters, such as PD, OD, AT, and oil-type on AR (%) and yield (%). Step-wise regression was performed for development of prediction model for AR (%) and yield (%). Determinant analysis was performed using general linear model (GLM). Our findings indicate that pulp density was the strongest determinant for AR (%), followed by oil dosage and agitation time. Similarly, oil dosage was the primary determinant for yield (%), followed by pulp density and agitation time. Sensitivity analysis was also carried out using artificial neural network (ANN) and the results in respect AR (%) revealed that agitation time was the most important predictor followed by pulp density and oil dosage.