Tomsk Polytechnic University

Liquid spraying and break-up of droplets in a transonic air flow

Sprays of water, ethanol, and acetone of micrometre-scale droplets are investigated in a transonic flow in a flat converging–diverging nozzle with a shock wave structure downstream. High-magnification two-frame shadowgraphy with a short interframe delay is used to investigate the...

Study of the Stability of Parameters of Red-Range Semiconductor Laser Emitters for Fiber-Optic Sensors of Monitoring Systems

The study is aimed at selecting low-cost semiconductor laser emitters for fiber-optic sensors of systems that monitor the technical condition of mine workings, open pits and monolithic building structures. One specimen of each of the three commercial red laser emitters used in vi...

Noncovalent Interactions Surrounding Polyoxometalates: From Chemistry to Materials Applications

Polyoxometalates (POM) are one of the areas of inorganic chemistry that is actively developing due to the broad application of POM‐based materials in the emerging areas of modern science and technology. POMs are a huge family of oxocomplexes distinguished by specific intrinsic pr...

Technical efficiency and firm profitability in Russian manufacturing: leverage, firm age and two-stage DEA evidence

Purpose This study aims to examine when technical efficiency leads to firm profitability. Prior research reports mixed efficiency–performance evidence; the authors argue that this relationship is nonlinear and conditioned by firms’ ability to capture value from efficiency gains....

Sensitivity of Flow Harmonics to the Equation of State of Strongly Interacting Matter in Heavy-Ion Collisions at Nuclotron-NICA Energies

The main goal of beam energy scan programs in heavy-ion collisions is to investigate the equation of state (EoS) and explore possible phase transitions in strongly interacting matter. Anisotropic flow, quantified from the azimuthal distributions of produced particles, is a key ob...

Advanced materials processing and non-destructive evaluation for next-generation hydrogen storage systems: A review of protective coatings, membranes, and composite structures

The transition to a hydrogen-based economy critically depends on the development of safe, efficient, and durable storage systems. However, practical implementation of metal hydride beds and Type IV composite vessels faces three critical challenges: surface degradation and poisoni...

Design, Synthesis,and Evaluation of Alkoxyamine AnticancerProdrugs Bearing Galactoside as an Enzyme-Activated Trigger

Abstract Enzyme-induced cytotoxicity can be considered the main challenge in modern cancer therapy that provides unique opportunities for targeted apoptosis. To address this challenge, we implemented enzyme-triggered activation of alkoxyamine–galactose conjugates with the formati...

Artificial-Lift System Control: A Reduced-Order Transient Model for Real-Time Predictive Control of Electrical Submersible Pump Wells

Unstable well operations, driven by reservoir depletion, high gas–oil ratios, unstable inflow, and surface network interactions, have become a major challenge in modern production — especially in Western Siberian fields — causing flow instabilities and production losses. While nu...

Quasi-Experimental Field Assessment of Haul-Road Maintenance Effects on Fuel Consumption, Cycle Time and Mechanical Loading of Open-Pit Dump Trucks

Haul-road condition in open-pit mining affects fuel consumption, transport-cycle throughput and dump-truck mechanical loading. This study conducted a quasi-experimental field assessment of local maintenance effects on severely degraded road segments. The full cycle register conta...