Kielce University of Technology

Explained and Residual Variability of the Fetal Mechanical PR Interval in Structurally Normal Hearts: A Secondary Analysis of Physiological, Biometric, and Doppler Covariates

Background/Objectives: A previous publication reported that routinely measured covariates explained approximately 10% of fetal mechanical PR interval (mPR) variance. This secondary analysis examined how explanatory information is distributed among correlated predictors, their inc...

A Key to Fuel Saving in Combustion Engines—Part 1: General Approaches and Concept of Cooling Cyclic Air in Marine Cogeneration Plants

Low-speed diesel engines are the most widespread in marine power plants. Their fuel efficiency falls with growing intake and charge air temperatures. Therefore, cyclic air cooling ensures sustainable performance of ship engines along the voyage with high fuel efficiency. Absorpti...

Comparative Analysis of the Relationship Between Electric Bus Adoption and Electricity Grid Emission Intensity in European Countries

Transport is responsible for a considerable part of greenhouse gas emissions in the European Union. Electrification of urban bus fleets is treated as one of the basic instruments of decarbonisation of this sector. The climate benefit obtained from such a transition depends, howev...

A Unified Experimental Database and Group-Aware Pilot Machine Learning for Flow Boiling in Rectangular Minichannels

A unified experimental database and a documented Python (3.12.6)-based harmonisation workflow are presented for local heat-transfer analysis in rectangular-minichannel flow boiling. The database integrates 449 experimental source files and 64,385,791 point-level records covering...

More than lava flows: mapping cultural ecosystem services in Katla UNESCO geopark via user-generated content

This study advances digital tourism geographies by examining the spatial distribution of Cultural Ecosystem Services (CES) within the Katla UNESCO Global Geopark, Iceland, using user-generated content (UGC). Drawing on 12,386 geolocated Flickr photographs collected between 2015 a...

Enhancing clinical reasoning and diagnostic precision through scaling laws and multi-stage supervised fine-tuning in open-weight medical large language models

Abstract The emergence of large language models offers unprecedented opportunities to transform clinical workflows. However, reliance on proprietary closed-source models poses significant risks to data privacy, institutional autonomy, and reasoning transparency. This study invest...

Effect of Austempering on the Microstructure, Mechanical Properties and Tribological Performance of EN-GJS-800-8 Ductile Iron Castings

This study evaluated the effect of austempering on the microstructure, mechanical properties, and dry-sliding wear performance of EN-GJS-800-8 ductile iron produced as cross-step castings with wall thicknesses of 8, 17, 38, and 48 mm. As-cast and heat-treated specimens were exami...

Assessment of the Possibility of Using Turning as a Post-Processing Method for Parts Manufactured by MEX Technology

Additive manufacturing enables rapid prototyping, the production of complex geometries, and a reduction in production costs, which contributes to its widespread use in engineering. Despite the numerous advantages of additive technologies, limitations still exist regarding the dim...