Effects of drinking water temperature in summer on growth performance, water consumption, surface temperature, blood parameters, and intestinal development of geese from 14 to 42 days of age.

On-site speciation of inorganic arsenic using a flow-type electrodialytic ion-transfer device with selective arsenite isolation.

Comparison of domestic hot water production with photovoltaic panels and solar thermal collectors

Integrated modeling and multi-parameter analysis of packed bed latent heat storage for climate-responsive domestic hot water systems

Physicochemical and flavor profile characterization of sesame oils from different processing methods: Implications for quality control and market regulation.

Ultrasonic-assisted hot water extraction of polysaccharides from opuntia dillenii: process optimization, derivatization, physicochemical properties and biological activities

Processing-induced structural remodeling enhances the hypoglycemic activity of Polygonatum cyrtonema Hua polysaccharides via gut microbiota-SCFA-GPR41/43 pathway.

Direct air capture enabled by low-grade thermal energy via hot water regeneration of a ligand-exchange sorbent

Ensuring consumers' safety and maintaining regulatory compliance requires assessing the presence of pesticide residues in agricultural products. While sulfoxaflor, a widely used sulfoximine insecticide, is effective in pest control, its environmental impact has been increasingly scrutinized. Concerns over sulfoxaflor's harm to pollinators have led to its prohibition in the EU as of 2022, making its detection a critical aspect of environmental and food safety monitoring. Here, we present an innovative, highly sensitive, semi-quantitative indirect competitive lateral flow immunoassay (icLFIA) for detecting sulfoxaflor in flower leaves. This icLFIA achieves a visual limit of detection of 4μg/L in plant extracts by implementing a highly specific monoclonal antibody. Moreover, it has demonstrated great reproducibility, making it an eco-conscious test for routine analysis at the point of need using a simple hot water extraction and incorporating sustainable packaging. The icLFIA has been tested on commercially available ornamental flowers and critically compared against an in-house confirmatory liquid chromatography-tandem mass spectrometry (LC-MS/MS) method. This development offers a cost-effective and reliable solution for sulfoxaflor residue assessment. The combination with a straightforward and simplified extraction protocol for flower leaves, makes it accessible to non-experts (e.g. beekeepers).

Ultrasound-assisted deep eutectic solvent extraction of ginseng folium polysaccharides: Extraction mechanism, process optimization, structural characterization, and in vitro biological activity.

This work investigates how hot-water aging affects the mechanical and shape-memory properties of flax fibre-reinforced PLA/PETG composites for 4D printing. While flax reinforcement increases stiffness (Young’s modulus from 3.6 GPa to ≈ 4.0 GPa at 15 wt%), it also markedly increases water uptake because of fibre hygroscopicity: the neat PLA/PETG absorbed < 2 % at saturation, whereas the 15 wt% composite reached ≈ 20 % after 67 days. Aging at 45 °C caused pronounced stiffness and strength losses (up to 44 % and 69 %, respectively), consistent with SEM evidence of fibre swelling, interfacial debonding, matrix fragmentation and increased porosity. FTIR revealed intensified O–H bands and XRD revealed structural reorganization, including secondary recrystallization in PLA, corroborating hydrolytic degradation. Despite these degradation phenomena, the shape-memory functionality remained largely preserved, with high initial performance (fixity ≈ 100 % and recovery ≈ 100 % for the neat blend) and only a moderate reduction in shape fixity (S f ≈ 90 % at 15 wt%), accompanied by a slight decrease in shape recovery (S r ) after aging. These results demonstrate that shape-memory performance can be maintained even under severe hydrothermal exposure, addressing a critical knowledge gap in the functional durability of 4D-printed natural fiber–reinforced composites and providing a foundation for the development of more robust structures operating in humid environments. • First study linking hydrothermal aging to shape memory in flax/PLA-PETG 4D prints. • Novel FFF fabrication of bio-based 4D composites with 5–15 wt% flax reinforcement. • Hydrothermal aging (45 °C) caused up to 69 % strength loss, 44 % modulus loss. • Shape fixity stayed ≈ 90 % after aging; recovery ≈ 97 % for 15 wt% flax composites. • FTIR/XRD + SEM revealed hydrolysis, recrystallization and fiber–matrix debonding.

Intense pulsed light-assisted water extraction of polysaccharides from Lentinula edodes: In vitro structural characterization and verification of antioxidant activities.

This study presents a comparative life cycle assessment of fast-responding direct electric surface heating systems and conventional pumped hot water systems. Three thermal load scenarios (30–150 kWh m -2 a -1 ) and two building scales (100 m 2 and 1000 m 2 usable floor area) were analyzed over a 20-year period, evaluating ecological and economic performance. From an ecological perspective, life cycle impacts are dominated by the operational phase, whereas production and disposal contribute only marginally. Depending on the system and scenario, non-renewable primary energy use during production and disposal accounts for less than 1 % to 18 % of total life cycle demand, and associated greenhouse gas emissions for less than 1 % to 15 %. Overall, direct electric heating systems exhibit higher life-cycle-related environmental impacts than pumped hot water systems due to the high primary energy factor of electricity. The economic assessment indicates that direct electric heating can achieve lower total annual costs under specific boundary conditions. Clear cost advantages occur for small usable areas (100 m 2 ) and low annual heating demands below 47 kWh m -2 a -1 , while at higher demands and larger areas (1000 m 2 ) pumped hot water systems are more favorable. In summary, direct electric heating can be economically competitive in buildings with low heating demand, small usable areas, and high load variability. However, its ecological performance remains inferior to that of hydronic systems despite advantages such as rapid thermal response and simplified system architecture. • Ecological and economic assessment of two heating systems. • Analysis for 100 m 2 /1000 m 2 and 30–150 kWh m − 2 a − 1 heat demand. • Use phase dominates overall environmental impacts. • Direct electric heating shows higher life cycle burdens. • Findings inform energy-efficient building design decisions.

ABSTRACT Currently, small‐molecular‐weight collagen peptides are a research hotspot in functional factor development due to their high bioavailability and diverse bioactivities. In this study, gelatin was extracted from tilapia ( Oreochromis niloticus ) scales by hot water extraction, followed by pepsin hydrolysis and ultrafiltration to obtain the &lt; 3 kDa ultrafiltrated fraction of tilapia scale gelatin peptides (UTSGP). Through the evaluation of immunomodulatory activity and mechanisms, it was found that UTSGP significantly promoted the proliferation and phagocytic capacity of RAW264 . 7 macrophages. Specifically, its immunomodulatory activity was mediated by the nuclear factor‐κB (NF‐κB) pathway, which led to the increased production of tumor necrosis factor‐α (TNF‐α) and interleukin‐6 (IL‐6). In vivo studies in Caenorhabditis elegans ( C . elegans ) showed that UTSGP significantly extended lifespan, improved healthspan, and increased resistance to juglone‐induced oxidative stress. Further analysis revealed that UTSGP upregulated antioxidant genes ( sod‐3 , gst‐4 ) through the insulin/IGF‐1 signaling (IIS) pathway and enhanced innate immunity by modulating immune‐related gene expression. To our knowledge, this study is the first to demonstrate tilapia scales as a promising source of immunomodulators, showcasing the potential of their derived peptides for developing novel and efficient immunomodulatory functional foods.

Extensive efforts have enhanced flat plate solar collectors through active and passive strategies to advance clean energy adoption aligned with SDG7. In this context, a compact domestic solar hot water system was developed using a rifled riser tube flat plate collector and CuO/La2O3 nanofluids under forced circulation. A 1 m2 collector coupled with a 50 L day − 1 storage tank was experimentally evaluated using deionized water, CuO, La2O3 mono nanofluids, and an 80:20 CuO/La2O3 hybrid nanofluid at 0.5 wt% concentration and flow rates of 1, 2, and 3 LPM. At 3 LPM, maximum thermal efficiencies of 70.24%, 75.73%, 79.95%, and 81.96% were achieved for deionized water, La2O3, hybrid, and CuO nanofluids, respectively. The rifled tube produced heat transfer coefficients of 8836 W m − 2 K − 1 for the hybrid and 9027 W m − 2 K − 1 for CuO nanofluids. La2O3 improved colloidal stability, while CuO enhanced thermal conductivity, yielding synergistic performance. Compared with a plain tube collector using deionized water, average efficiency improved by 30.56% and 32.36% for hybrid and CuO nanofluids. Enhanced heat transfer increased exergy efficiency to 22.54% and 25.45% for hybrid and CuO nanofluids, respectively. The combined use of rifled tubes and hybrid nanofluid enabled a 24.86% reduction in collector area domestically.

To address the issues of low efficiency, high resistance, and insufficient durability associated with traditional filter media in mine dust control. In this study, a series of reduced graphene oxide (rGO) modified composite filter media were successfully prepared by impregnating them in different concentrations (1, 3, 5 g/L) of graphene oxide (GO) aqueous dispersion and then reducing them in a hot water bath of l-ascorbic acid solution.Research findings indicate that as the impregnation concentration increases, the porosity of the filter material decreases from 74.11% to 72.72%, with the reduction amounting to less than 5%. At each concentration, filter media resistance increased with both filtration velocity and preparation concentration. At filtration velocities of 0.1-0.8 m/s, resistance variations were as follows: PPS (67-413 Pa), 1 g/L (71-438 Pa), 3 g/L (76-464 Pa), and 5 g/L (91-316 Pa). At a constant filtration velocity of 0.4 m/s, the resistance variation range was 213-260 Pa, with all resistance values showing a change amplitude below 15%. The particle capture efficiency of all four filter media increased with both particle size and impregnation concentration. The 3 g/L rGO novel composite filter material exhibited optimal comprehensive performance across particle size quality factor ranges of 0.00148-0.01439. After four filtration cycles, the PM10, PM2.5, and PM1.0 filtration efficiencies of the 3 g/L rGO novel composite filter material ranged from 74.14% to 64.8%, 47.4% to 36.92%, and 21.77% to 12.71%, respectively. whereas PPS filter media recorded 68.65%-60.42%, 44.91%-35.54%, and 21.42%-11.64% respectively. The 3 g/L rGO novel composite filter material maintained higher filtration efficiencies overall, demonstrating superior performance to PPS filter media.This study provides valuable data references for addressing practical issues concerning mine dust and for the synthesis and application of novel filter materials.

Hot-water immersion (HWI) has been shown to reduce 24h ambulatory systolic blood pressure in hypertensive adults and might represent a preventative strategy for maintaining cardiovascular health in normotensive adults. The purpose of this study was to determine the time course of post-HWI hypotension and test the hypothesis that a single HWI reduces subsequent 24h ambulatory blood pressure (ABP) in healthy adults. In a randomized, crossover design, 23 participants [7 female and 16 male; 26 (4) years of age] underwent blood pressure assessments before, during, immediately after and for 24h following 60 min of immersion in 40.4°C hot water (HWI) and a thermoneutral (24.7°C) air control (CON). Thermal and cardiovascular variables were assessed during and for 60 min after the intervention, after which the participants were instrumented with an ABP monitor for 24h. At min 60 of the interventions, body core temperature was higher [CON, 36.93 (0.28)°C; HWI, 38.83 (0.19)°C; P<0.001] and diastolic (P<0.001) and mean (P<0.001) arterial blood pressure lower in HWI than CON. HWI increased the diastolic blood pressure nocturnal dip compared with CON [CON, 15.4 (7.2)%; HWI, 19.1 (7.4)%; P=0.022]. No differences in ABP were observed for 24h, daytime or nighttime systolic, diastolic or mean arterial blood pressures (all P>0.05). In conclusion, HWI transiently decreased mean arterial blood pressure and diastolic blood pressure for ≤20min post-heating and increased the subsequent nocturnal diastolic blood pressure dip in healthy adults.

The hot spring hypothesis for the origin of life proposes that naturally occurring wet–dry cycles in small bodies of water could have driven condensation reactions on prebiotic Earth. Mononucleotides exposed to wet–dry cycles in the laboratory have been shown to generate RNA oligomers. We tested whether similar reactions occur after wet–dry cycling in the laboratory of mononucleotides mixed with natural hot spring waters. Nucleotide solutions were prepared in the laboratory with effluent samples collected from hot springs of the Seltún (SE) and Hveradalir (HV) geothermal areas in Iceland. Sixteen wet–dry cycles with water collected from SE resulted in degradation of adenosine-5′-monophosphoric acid (95%), uridine 5′-monophosphate (63%) mononucleotides, while four wet–dry cycles were enough to destroy around 90% of both A10 and U10; thus, they displayed uniquely destructive properties for both purine and pyrimidine bases. Meanwhile, mononucleotides suspended in water collected from the HV hot spring were as stable as in nuclease-free water. Exposure of these solutions to wet–dry cycles also resulted in the synthesis of uridine dimers, cyclic mononucleotides, and other promising macromolecules.

Yam polysaccharides are promising functional food ingredients, but the systematic understanding of how cultivar and processing synergistically determine their structure and functionality is still lacking. This study systematically investigated how hot water extraction, enzymatic hydrolysis, and extrusion puffing affect the structural and functional properties of polysaccharides from two major cultivars (Dioscorea opposite cv. Tiegun and Dioscorea esculenta cv. Gaozhou). Enzymatic extraction increased yield (1.39-1.77-fold) and solubility, while hot water extraction favored purity. The monosaccharide composition was strongly cultivar-dependent, with Tiegun polysaccharides containing higher mannose levels. Extrusion puffing of Gaozhou polysaccharide improved solubility by 33.3% but induced depolymerization and aggregation, modifying colloidal and functional behaviors. Multivariate analysis revealed that processing methods primarily governed macromolecular architecture and colloidal properties, whereas cultivar determined chemical composition. These findings establish a processing-structure-property framework, enabling the tailored production of yam polysaccharides: Tiegun yam with enzymatic extraction for high bioactivity, and Gaozhou yam with extrusion puffing for superior solubility.

A case of Legionnaires' disease linked to the household hot water system, confirmed by whole genome sequencing.