Indian Institute of Technology Kanpur

On discrete X-ray transform

We consider a discrete version of X-ray transform going back, in particular, to Strichartz (1982). We suggest non-overdetermined reconstruction for this discrete transform. Extensions to weighted (attenuated) analogues are given. Connections to the continuous case are presented.

On local and non-local energy transfers in Hall magnetohydrodynamic turbulence

A systematic study of inertial energy cascade in three-dimensional incompressible Hall magnetohydrodynamic turbulence is conducted to investigate the locality of energy conserving triads and the subsequent transfers. Based on the nature of triadic conservations, the energy transf...

A targeted search for fast radio bursts from magnetars in elliptical galaxies

Abstract Motivated by predictions that globular clusters associated with nearby giant elliptical galaxies are prime environments for detecting fast radio bursts (FRBs) from magnetars, we report on a targeted high-sensitivity search across five local massive elliptical galaxies. W...

Martensitic transformation in crystal-amorphous superlattices of NiTi shape memory alloy

Shape memory alloys (SMAs) exhibit unique thermo-mechanical properties arising from reversible martensitic transformation. Incorporating a coherent second phase has emerged as an effective strategy for tailoring these transformations and improving functional performance. However,...

Effect of Indium and Nickel on Impact Toughness of Sn–0.7Cu Solder: Interplay of Solubility, Phase Configuration, and an Improved Ductile‐to‐Brittle Transition Temperature Analysis

Reliability of solder joints under sudden mechanical shocks at cryogenic conditions is critical for deep‐space electronics, where launch‐induced vibrations, pyrotechnic‐shock, micro‐meteoroid impacts, or thermally induced stress transients can compromise structural interconnect i...

Modeling Incomplete Solute Mixing at Pipe Junctions in Water Distribution Networks: Parametric CFD Simulations and a Predictive Regression Approach

Abstract High-quality drinking water is essential for modern settlements, and accurate modeling of solute mixing at pipe junctions is crucial in water distribution networks (WDNs). While complete mixing is often assumed, recent studies emphasize the need to account for incomplete...

Electric vehicle deployment in India: implications for critical material demand and the role of recycling through 2060

The rapid expansion of India’s on-road vehicle fleet creates opportunities and challenges for future energy systems, particularly for critical material requirements of electric vehicles (EVs). This study develops a bottom-up model of India’s passenger and commercial vehicle fleet...

Representative virtual heliostat: A reduced-order approach to accelerate flux estimation for a central receiver tower system

Flux estimation over the receiver surface is critical in design and analysis of a concentrating solar power (CSP) system based on heliostat field and central receiver tower. Monte Carlo ray tracing (MCRT) provides high accuracy in estimating flux distribution. However, it is comp...

Does ethanol blended petrol meet India's climate commitments? Insights from life cycle assessment of sugarcane derived ethanol in India

India relies heavily on crude oil imports to meet its domestic energy demand. To reduce dependence and mitigate greenhouse gas emissions, biofuels such as bioethanol are being promoted. The ethanol blending program is a key initiative under India's biofuel policy, primarily utili...

Electric field modulated rebound suppression during high velocity droplet impact on a heated surface

Droplet rebound suppression can improve spray cooling by extending the time the liquid interacts with the heated wall and reducing energy loss. The electrowetting (EW) technique may control droplet impingement to improve spray cooling by modulating the impact dynamics. This work...

Multiscale Symmetry Breaking Enables Tunable Magnetic Anisotropy and Damping in Co 2 FeAl Thin Films

ABSTRACT The ability to simultaneously engineer magnetic stability and spin dissipation remains difficult to realize in scalable metallic thin films. Here, we show that multiscale symmetry breaking provides a route to achieve this control in polycrystalline Co 2 FeAl films withou...

Dapagliflozin impairs renal epithelial innate immunity and facilitates uropathogenic E. coli infection in diabetes

Risk of pyelonephritis is very high among patients with diabetes. During diabetes, the oral antidiabetic drug, dapagliflozin (DAPA) is commonly prescribed for its well-recognized renoprotective effects. Although DAPA lowers renal glucose reabsorption, it significantly increases u...

The Role of Inner Halo Angular Momentum (Spin) in Shaping Dark Matter Bars in Milky Way Analogs

Abstract Studies of galactic bars have primarily focused on stellar bars, since they can be directly observed through ultraviolet to infrared wavebands. Cosmological as well as idealised simulations reveal that the dark matter (DM) halos interact with baryonic matter, primarily t...

On two notions of torsion and metric compatibility of connections in noncommutative geometry

We compare the notions of metric compatibility and torsion of a connection in the frameworks of Beggs–Majid and Mesland–Rennie. It follows that for * -preserving connections, compatibility with a real metric in the sense of Beggs–Majid corresponds to Hermitian connections in the...

Experimentally validated ANN-based sustainable fault diagnosis framework for solar PV systems

Faults in solar photovoltaic (PV) arrays significantly degrade energy yield, reliability, and operational safety, particularly on the DC side where continuous energization increases fault severity. This paper presents an integrated Artificial Neural Network (ANN)-based framework...

A robust forward-chain approach for ex-post and ex-ante seasonal river water-quality forecasting using remote sensing and hydroclimate forecast datasets

Understanding pollution dynamics in urban riverine ecosystems is essential for effective water-quality management and ecological sustainability. However, reliable seasonal forecasting remains challenging due to sparse observations and uncertainty in hydrometeorological drivers. T...

Odd entanglement entropy in boundary conformal field theories and holographic moving mirrors

Abstract We obtain the odd entanglement entropy (OEE) for bipartite mixed states in $(1+1)$-dimensional boundary conformal field theories (BCFT$_2$s) utilizing an appropriate replica technique. For the generic configuration of two disjoint intervals, the large-$c$ factorization o...

Thermal–Hydraulic Performance Analysis of Micro Pin‐Fin Heat Sinks With Different Fin Geometries: A Numerical Study

ABSTRACT Efficient thermal management is essential for maintaining the reliability and performance of modern microelectronic devices. This study presents a detailed numerical analysis of a three‐dimensional micro pin fin heat sink incorporating 55 fins arranged in a single channe...

Adaptive multi-scale attention-enhanced V-NET for accurate and efficient multi-shell diffusion MRI estimation

Multi-shell acquisition protocols sample diffusion signals at different b -values. While higher b -values (e.g., \(b = 2000\, \mathrm {s/mm^2}\) ) offer increased sensitivity to microstructural features, their acquisition is time-intensive and suffers from reduced signal-to-noise...

Highly efficient pyrazine-based organo-lanthanide luminescent ionogels for white light emission through energy transfer

A novel pyrazine based bichromophoric system was designed to achieve the efficient white light emission through partial resonance energy transfer in ionic liquid based gel medium i.e., ionogel. The partial resonance energy transfer was taken place between the pyrazine based bichr...