In the present work, the investigation of polycrystalline nanomaterials has been extended to a specific nanoalloy of copper and tantalum having a 9:1 atomic concentration. The study aims to analyze the influence of temperature and average grain size (AGS) on the mechanical behavior of the polycrystalline Cu-Ta nanoalloy. The results indicate that the critical grain size of polycrystalline 9Cu-Ta is smaller than that of pure Cu. The critical grain size of polycrystalline Cu (6.86nm) is reduced to 3.89nm with the addition of approximately 10% Ta atoms. This reduction is attributed to the combined effects of dislocation slip and subgrain strengthening mechanisms. Furthermore, the investigation highlights the variation of mechanical properties with increasing temperature and the influence of temperature on the critical grain size. The analysis also reveals the existence of distinct plastic deformation mechanisms corresponding to the critical grain size in the polycrystalline Cu-Ta nanoalloy. Molecular dynamic simulation has been carried out under a fixed strain rate of 1.0 × 1010s-1 for specifically analyzing the effect of temperature and average grain size (AGS) of the polycrystalline nanoalloy using embedded atom method potential (EAM). The polycrystalline structures with different grain sizes were generated using the Voronoi construction method. Simulations were carried out to evaluate the effect of temperature and grain size on the deformation behavior. The obtained data were analyzed to determine the critical grain size, variation in mechanical properties, and the associated deformation mechanisms of the polycrystalline 9Cu-Ta alloy.

Abstract Ionizing radiation is an effective method for fungal decontamination of photographic heritage materials; however, its application to glass plate negatives may induce optical darkening due to radiation-induced defects in the glass matrix. This study investigates the influence of temperature during gamma irradiation and the potential of UVB light exposure as a non-thermal bleaching strategy. Historical glass plate negatives were irradiated at 6 kGy under room temperature and dry-ice cooling, while common soda–lime–silica glass samples were used as analogues to quantify optical changes. Low-temperature processing mitigated color alterations without affecting decontamination efficacy, whereas UVB exposure promoted partial recovery of transparency in a dose-dependent manner. The combined approach offers a viable strategy for balancing biocidal effectiveness and optical preservation in glass-based photographic heritage.

Oil on the beach: A laboratory investigation into the influence of temperature on oil penetration into shoreline sediments.

Influence of pyrolysis temperature on morphological features and electrochemical properties of cotton stalk-derived hard carbon materials

Investigating drivers of Mediterranean coralligenous fish communities using passive acoustic monitoring: the role of thermal environment, day length and moon phases.

Enhanced fluoride adsorption onto bimetallic Ce/Zr-MOFs with a high selectivity: Characterization and mechanism.

Influence of calcination temperature on nutrient removal from aquaculture wastewater by composite substrate made of pyrite and biochar

Determination of individual biogenic volatile organic compounds in the atmosphere at short time intervals by a combination of in-situ continuous sampling using wet diffusion denuder and off-line laboratory analysis.

Optimized synthesis of mesoporous niobium pentoxide: influence of structure-directing agents, crystallization time, and calcination temperature

Decoupling study on volatiles-char interaction during co-pyrolysis of dry/wet torrefied biomass and coal: Influence of pyrolysis temperature

Upgrading of bio-oil from torrefied wheat straw over Fe-Ni modified HZSM-5@MCM-41: Influence of pyrolysis temperature and catalyst-feedstock ratio

Tracking the evolution of volatile aroma compounds in Baijiu during storage: quantitative insights into temperature, oxygen, and pottery influences.

Mobile MAX-DOAS measurements and source analysis of NO2, HCHO, and HONO during the Chengdu 2023 FISU world university games.

Influence of calcination temperature on the properties and photocatalytic efficiencies of BiFe0.9Cu0.1O3 nanoparticles

Abstract The inelastic compaction of sandstone in the upper crust typically occurs at depths where temperatures range from approximately to . Previous experimental studies have shown that even this modest temperature increase can reduce the yield stress required to initiate inelastic compaction, and can also enhance time‐dependent deformation within the brittle regime. However, the influence of these realistic crustal temperatures on sandstone compaction over longer time scales has not yet been systematically explored. We performed triaxial creep experiments on Bleursville sandstone at an effective pressure of 100 MPa and at temperatures of either room temperature, , or . Our results show that the differential stress required to initiate creep is up to 20 MPa lower at than at room temperature. In addition, at any given differential stress, axial creep strain rates were more than an order of magnitude higher at .We also find that the typical decrease in strain rate with increasing axial strain was less pronounced at higher temperatures. This indicates that the stress sensitivity of the creep rate is reduced as temperature increases. Finally, we extrapolated our experimentally derived creep laws for Bleursville sandstone and combined them with theoretical estimates of pressure‐solution rates at lower stresses and strain rates. This shows that time‐dependent deformation at room temperature is dominated by subcritical cracking across all conditions examined. In contrast, at , Bleursville sandstone may begin to deform by pressure solution once strain rates fall below approximately .

ABSTRACT Shape Memory Alloys (SMAs), particularly Nickel–Titanium (NiTi) alloys, have emerged as promising materials for intelligent and robotic systems due to their unique capability to recover their original shape under thermal or electrical excitation. This study presents an experimental investigation and analysis of the coupled mechanical and electrical properties of NiTi SMA, aiming to establish a correlation between phase transformation and electrical response. The experimental procedure combined mechanical tensile testing with electrical resistance measurements performed under controlled temperature and voltage conditions. The results demonstrated that the electrical resistance of the alloy decreased by approximately 12–18% during the transformation from martensite to austenite, while the stress level increased by 8–14% under thermal activation. These findings confirm a strong coupling between the thermal, electrical, and mechanical behaviours of the alloy. The observed interaction highlights the competitive influence of temperature on mechanical stress generation. The outcomes of this work provide essential insights into the design and optimisation of SMA-based actuators and sensors. Moreover, the established correlation between electrical response and phase transition can support the development of adaptive control strategies for SMA-driven robotic mechanisms, enhancing their reliability, efficiency, and overall system performance.

ABSTRACT This study investigates the rheological behavior of industrial phosphoric acids (H 3 PO 4 ) produced at the JORF–LASFAR phosphoric plant in Morocco, with P 2 O 5 concentrations of 18%, 29%, 42%, and 54%. Rheological measurements were performed using a rotary cylinder rheometer over a shear rate range of 1–1000 s −1 . The influence of temperature, density, and magnesium monoxide (MgO) content on the flow behavior and viscosity of the acids was examined, and the fluid flow activation energy ( Ea ) was determined for each concentration. The results indicate that phosphoric acid with 54% P 2 O 5 exhibits dilatant behavior in the temperature range of 40°C–80°C while showing Newtonian behavior at lower temperatures between 25°C and 30°C. Furthermore, MgO content was found to have a significant effect on the rheological properties and viscosity of industrial phosphoric acids. The experimental rheological data were successfully analyzed and modeled using several empirical models, including the Casson, Bingham, power law, and Herschel–Bulkley models.

The main parameter used to characterize the resistance of materials to corrosion is the corrosion rate, which is estimated by the amount of deterioration over a certain time, while the average value is presented on an arbitrarily selected test base. However, current corrosion rate measurement methods do not adequately capture the kinetics of corrosion development, hindering the ability to predict the lifespan and serviceability of components. The results of determining the corrosion rate of carbon dioxide by the concentration of iron ions in the test environment are presented in the paper. During the corrosion tests, the concentration of iron transferred to the test environment was measured, and the rate of corrosion destruction was determined based on data on iron loss. The influence of test temperature, composition, and structural condition of pipe steels on the kinetics of carbon dioxide corrosion development was also analyzed. The dependences of the change of corrosion rate and the development of corrosion processes are given. It is shown that the average corrosion rates values during long-term tests correlate well with results from gravimetric and electrochemical methods. The results obtained and the proposed approach can be used to improve methods for determining and evaluating the dynamics of changes in the rate of corrosion during exposure to a corrosion environment.

Influence of Temperature on the Mechanical Behavior of P110 Cr13S Steel Under Cyclic Loading Conditions

The global economy is increasingly faced with the challenge of accepting its responsibility for recycling polyester textile waste. With back-to-monomer recycling technologies, PET can be recycled to its monomers, terephthalic acid and ethylene glycol. The recycling of polyester-containing textiles requires the complete separation of all contaminating materials, dyes, and additives, which can only be achieved by depolymerization technologies. This article presents the adsorptive decolorization of a disodium terephthalate solution from the alkaline hydrolysis of polyester textile waste. The influence of different adsorbents, temperature (30–80 °C), and pH value (7–12) on the adsorptive decolorization process is investigated. As a result, activated carbons for decolorization have been identified. It was found that the adsorption process is favorable at neutral pH and a temperature of 80 °C. The findings show that a color value within the industrial specification can be obtained for recycled terephthalic acid using activated carbon adsorption. This adds a key step for high-quality textile-to-textile recycling and thus contributes to a circular economy for polyester.