Application of MWD Sensor System in Auger for Real-Time Monitoring of Soil Resistance During Pile Drilling.

Measuring-while-drilling (MWD) techniques have great potential for use in geotechnical engineering research. This study first addresses the current use of MWD, which consists of recording data using sensors in a drilling machine operating on site. It then addresses the currently unsolved problems of quality control in drilled piles and assessments of their interaction with the soil under load.

New Biodegradable Polyester-Polyurethane Biocompositions Enriched by Urea.

Novel polyester-polyurethane polymeric materials were formulated by combining a natural aliphatic polyester, poly(3-hydroxybutyrate) (P3HB), with a synthetic aliphatic polyurethane via melt blending. The resulting fully biodegradable compositions were functionally modified through the incorporation of urea, with the aim of enabling post-consumer utilization of the material residues as nitrogen-rich fertilizers. The fabrication process was systematically established and optimized, focusing on homogeneous blending and processability.

Side Oscillation Milling: Modeling, Analysis, and Compensation of Cutting Forces Through Feed Optimization.

This article presents an analysis and the modeling of cutting forces in the process of oscillation milling of side surfaces of workpieces made of hardened steel. In addition, the impact of the oscillation machining method on cutting forces was analyzed, taking into account feed optimization. A sinusoidal function was used to describe the trajectory of the tool in order to induce the oscillatory motion.

Comprehensive Analysis of Cutting-Force Components in Milling Using RQA: Effect of Edge Geometry and Process Parameters.

This study investigates the influence of cutting edge geometry (continuous, serrated, and wavy) and selected machining parameters (cutting speed , feed per tooth , and radial infeed ) on cutting-force components and dynamic behavior during the milling of an AlZn5.5MgCu aluminum alloy. The analysis was based on box plots and Recurrence Quantification Analysis (RQA) applied to the cutting-force signal.

Optimization of Tribological Properties of Shot-Peened Surfaces via Multi-Criteria Decision-Making Using TOPSIS and GRA.

The article presents a comparative analysis of experimental results from tribological tests conducted using a ball-on-disc system, applying two multi-criteria decision-making methods: Grey Relational Analysis (GRA) and TOPSIS (Technique for Order Preference by Similarity to Ideal Solution). The aim of the study was to identify the most advantageous combinations of input parameters-load, sliding speed, and sliding distance-while simultaneously evaluating three output criteria: volumetric wear (VD), coefficient of friction (CoF), and weight loss (WL). The analysis covered 27 test variants, with different weighting factors assigned to each criterion to reflect their practical significance (0.

Bioactive Properties of Selected European Species: A Comprehensive Study.

This study conducted a multi-directional evaluation of the chemical potential and biological properties of selected European fungal species of the genus . We investigated 30 samples belonging to 22 species. Fruiting bodies were collected, among other specimens, in the Białowieża Forest (Poland); Village Kozhle (North Macedonia); Estremadura, Sesimbra, and Lagoa de Albufeira (Portugal); Zlatari close to Prishtina (Kosovo); and Spoleto and the Bosco Siro Negri State Nature Reserve (Italy).

Impact of Soil Drought on Yield and Leaf Sugar Content in Wheat: Genotypic and Phenotypic Relationships Compared Using a Doubled Haploid Population.

Improving yield stability under water-limited conditions is a key objective of wheat breeding programmes. One trait of particular interest is carbohydrate accumulation and remobilisation. This study assessed the genetic basis of aspects of yield and flag leaf sugar contents under drought and well-watered conditions using mapping in a population of 90 doubled haploid lines derived from the cross Chinese Spring × SQ1.

Impact of gaseous ozone treatment of fish carcasses (Gadus morhua) on the microbiological load and their quality.

The improvement of the microbial quality of food products is one of the most important aspects of the world economy with a significant impact on the health of consumers. Due to the content of lipids, water, and proteins, meat is highly susceptible to degradation mediated by enzymes or microorganisms. Among the wide variety of animal-derived consumption products, fish is highly perishable and characterized by a short shelf life.

Thermocouple Sensor Response in Hot Airstream.

The response of a temperature sensor in a gas stream depends on several heat transfer phenomena. The temperature of the thermocouple's hot junction in the hot stream is lower than the measured temperature, which causes a measurement error. Compensation for this error and interpretation of the values indicated by the temperature sensor are possible by using a sensor dynamics model.

Metabolomic Insights into the Antimicrobial Effects of Yeast on Phytopathogens.

One of the most important features of is its strong antimicrobial activity against phytopathogens, which makes it a suitable candidate for use in biocontrol during crop cultivation. However, the mechanisms of its antimicrobial activity are not currently well understood. In this study, we used metabolomic methods to investigate the possible mechanisms of antimicrobial activity by against phytopathogenic fungi.

Effect of Mixing Technology on Homogeneity and Quality of Sodium Naproxen Tablets: Technological and Analytical Evaluation Using HPLC Method.

The uniform distribution of APIs is essential in tablet formulations, particularly in direct compression, where powder blending is the only means of ensuring dose homogeneity. This study evaluated the influence of three mixing techniques-V-type mixer, planetary ball mill, and vibratory ball mill-on the physical properties and content uniformity of naproxen sodium tablets. Blends consisting of naproxen sodium, cellulose, PVP, calcium carbonate, and magnesium stearate were prepared under varied mixing intensities and characterized in terms of flowability, compressibility, and particle size distribution.

Efficiency of sp. in the Treatment of Model Wastewater Containing Ni(II) and Pb(II).

In this work, the biosorption potential of sp. as an effective and eco-friendly biosorbent for the removal of Ni(II) and Pb(II) ions from aqueous solutions was investigated. Detailed characterization of the biosorbent was carried out, including surface morphology, chemical composition, particle size, zeta potential, crystallinity, zero-point charge, and functional group analysis.

Testing Using the DCP Probe of a Subgrade Modeled from Difficult-to-Compact Sand in a Calibration Chamber.

The aim of the article is to analyze the possibilities of using a lightweight dynamic cone probe DCP to determine the quality of compaction of surface layers of embankments (from 0.10 m to approx. 0.

Shear Strength of Lightweight Concrete Structural Elements Reinforced with FRP Bars: Experimental Studies vs. Code Predictions.

Using lightweight concrete (LWC) reduces the dead weight of the concrete structure by 25-30% compared to ordinary concrete. However, harmful and corrosive substances penetrate the lightweight concrete matrix due to its high permeability, resulting in higher maintenance costs and a reduced structure service life. Therefore, in harsh environments where conventional steel bars are susceptible to corrosion, fibre-reinforced polymer (FRP) bars should be used for reinforcement.

Polish validation of soft skills questionnaire for nurses.

Introduction: The professional competence of nurses is a pivotal factor in ensuring patient safety and significantly influences the quality of care delivered. In line with the guidelines of the International Council of Nurses and the World Health Organization, educational programs for nursing professionals must emphasize the development of both psychosocial and psychomotor competencies to maintain high training standards. Additionally, effective quality management in healthcare institutions necessitates continuous monitoring of nurses' competencies, encompassing not only practical skills but also interpersonal abilities.

Two-level atom witness of thermalization of multimode optical fibers.

In the present project, we study the dynamics of the two-level system coupled with the multimode optical system. In particular, we considered a square lattice of optical fibers. We aimed to answer whether we can infer information about the thermalization of optical modes through the thermalization of two-level atoms.

Development of Smart Surfaces for Medicine and Biotechnology: Advances in Glass Functionalization through RDRP Techniques.

All glass represents a material with extremely high utility potential in the development of biomaterials and research tools. Due to a number of its unique properties, such as chemical inertness, thermal stability, and transparency, it can be used in the preparation of hybrid materials for medicine and biotechnology. Such materials can be obtained by grafting polymer brushes from glass surface by reversible deactivation radical polymerization (RDRP) techniques.

Risk assessment method for pharmaceutics removal in treated wastewater - challenges of new Directive (EU) on urban wastewater treatment.

The provisions of the new European Union Directive on urban wastewater treatment introduce the obligation to control selected micropollutants in wastewater discharged to surface receivers. The monitoring list includes 10 active compounds belonging to the following groups of pharmaceuticals: antidepressants (3), antibiotics (1), analgesic (1), diuretic (1), β-blocker (1), anticonvulsant/psychotropic (1) and blood pressure regulator (2). The list of micropollutants also includes benzotriazole and a mixture of two methyl derivatives of benzotriazole (4-methylbenzotriazole and 6-methylbenzotriazole).

Thermal and Flammability Analysis of Polyurethane Foams with Solid and Liquid Flame Retardants: Comparative Study.

The thermal properties and flammability of rigid polyurethane foams (RPUFs) containing various flame retardants, including solid (melamine, expanded graphite (EG), Exolit OP 935, ammonium polyphosphate (APP)) and liquid (Roflam B7, Roflam PLO) types, added at 30 wt.% and 60 wt.% by weight have been evaluated.

Investigation of Buckling and Failure in Thin-Walled Columns Fabricated from PLA and PETG Using FDM 3D Printing.

This paper presents the results of an experimental study on the buckling and failure behavior of thin-walled square columns made from PLA and PETG polymers using FDM 3D printing technology. Thin-walled square columns made from thermoplastic materials, intended for use in lightweight load-bearing applications such as structural supports in transportation, construction, and mechanical assemblies, were tested under axial compression from the onset of buckling to complete failure. The novelty of this work lies in the application of an interdisciplinary experimental approach to the analysis of the behavior of thin-walled columns made of PLA and PETG materials during FDM 3D printing under compression until complete failure, as well as the use of acoustic and optical diagnostic methods for a comprehensive assessment of damage.

Effect of Ti Doping of AlCoCrFeNi-Based High Entropy Alloys on Their Erosion Resistance by Solid Particles.

The erosion resistance of materials against solid particles is a very important property, especially in the transportation of powders or in aeronautics (dust inside jet engines). There is a strong need to introduce new materials that have higher solid particle erosion resistance than state-of-the-art materials. Thus, in the present work, the solid erosion particles of high entropy alloys (HEAs) based on the Al0.

A Novel Method for Determining the Contact Pattern Area in Gear Meshing Based on Computer Processing of Pressure Measurement Film Images.

The contact pattern between gear teeth is one of the most significant indicators of proper gear operation. This paper presents an analysis of the contact pattern of gears with a sinusoidal profile. The gear geometry was obtained through direct solid simulation of the machining process.

Thermal Degradation and Flame Resistance Mechanism of Phosphorous-Based Flame Retardant of ABS Composites Used in 3D Printing Technology.

As part of the work, polymer composites dedicated to rapid prototyping were developed, especially for 3D printing using the material extrusion technique. For this purpose, a polymer matrix was selected, which was an acrylonitrile-butadiene-styrene (ABS) terpolymer and a flame retardant, which was tetrakis (2,6-dimethylphenyl)-m-phenylenebisphosphate, commercially known as PX200. The effect of the presence and amount (5, 10, 15 and 20 wt.

Surface Topography-Based Classification of Coefficient of Friction in Strip-Drawing Test Using Kohonen Self-Organising Maps.

One of the important parameters of the sheet metal forming process is the coefficient of friction (CoF). Therefore, monitoring the friction coefficient value is essential to ensure product quality, increase productivity, reduce environmental impact, and avoid product defects. Conventional CoF monitoring techniques pose a number of problems, including the difficulty in identifying the features of force signals that are sensitive to the variation in the coefficient of friction.

Effect of Ni-Based Superalloy on the Composition and Lifetime of Aluminide Coatings.

Aluminide coatings on nickel-based superalloys were synthesized via a high-temperature "clean" low-activity vapor-phase process. This process is environmentally friendly and meets manufacturers' environmental protection requirements. Hence, it fulfils the Industry 4.