Institute of Space Technology

Brief communication: Mass balance of glaciers in the Eastern Hindu Kush from 1979 to 2002 using KH-9 panoramic and SPOT-5 stereo imagery

Abstract. Glaciers exhibit region-specific mass loss patterns in response to ongoing climate change. In this study, we provide a geodetic mass balance assessment for glaciers within the Hindu Kush region spanning the period 1979–2002, utilizing KH-9 panoramic imagery and SPOT-5 s...

A Simulation Framework for Pre-Flight Coverage and Quality Assessment of UAV Bridge Inspection Routes Under Wind Disturbance

A numerical method is proposed to assess the visual coverage and imaging quality of a pre-designed unmanned aerial vehicle (UAV) inspection route prior to field deployment. The modeled inspection domain includes 336 m2 of deck-underside, exterior-girder, and pier surfaces, 5424 a...

Multiphysics computational study of coupled analysis of thermal energy and mass transfer in a non-Newtonian fluid under chemical reaction

Thermal and solute transport enhancement is a requirement of several industrial and engineering processes like thermal and cooling systems, thermal radiators, nuclear reactor cooling, HVAC and refrigeration, etc. The rheological constitutive relations, the Stefan-Boltzmann law fo...

Lupeol increases antioxidants in Triticum aestivum to mitigate cadmium stress under in vitro conditions

Presence of heavy metals in culturing media and soil badly impact on the growth, development, and yield of plants. Availability of stress-mitigating molecules in the environment strengthens the plant to face such stresses. Lupeol has recently been investigated as a drought stress...

Observational Constraints on Late-Time Cosmological Expansion in Minimal R + Alpha R^2 Gravity

We investigate the numerical dynamics and observational viability of the minimal modified gravity model defined by f(R) = R + alpha R^2 in the late-time Universe. By recasting the higher-derivative gravitational dynamics into an autonomous coupled system of first-order differenti...

Observational Constraints on Late-Time Cosmological Expansion in Minimal R + Alpha R^2 Gravity

We investigate the numerical dynamics and observational viability of the minimal modified gravity model defined by f(R) = R + alpha R^2 in the late-time Universe. By recasting the higher-derivative gravitational dynamics into an autonomous coupled system of first-order differenti...

Lecture Notes on Quantum Electrodynamics

These notes present a self-contained, first-principles derivation of Quantum Electrodynamics as the inevitable consequence of demanding local U(1) gauge invariance of the Dirac Lagrangian. Beginning with the Dirac equation and its zero-momentum solutions, we identify the spinor s...

Hyperspectral handwriting analysis for writer verification and ink mismatch detection using a hybrid CNN–LSTM model

Hyperspectral imaging captures detailed spectral reflectance information over a broad wavelength range, providing capabilities beyond those of conventional RGB imaging. This rich spectral information can be used in forensic document analysis to identify subtle variations in ink c...

Leaf-inspired ZnO-Cr2O3/epoxy coatings with tailored visible–NIR reflectance for spectral camouflage applications

The difference in spectral response between the target and the background is very crucial to avoid target detection by surveillance systems in the visible (VIS) and near-infrared (NIR) spectral regions. In this study, ZnO–Cr 2 O 3 /epoxy composite coatings were developed using co...

Computational investigation of thermal energy transfer enhancement in nanofluid in the presence of viscous dissipation, Joule heating and yield stress: a local similarity approach

Abstract Thermal transport by fluids has numerous applications, including thermal radiators, thermal and cooling systems, MHD generators, etc. In this study, the thermal transport performance of the Casson fluid is investigated in response to the inclusion of three combinations o...