bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of biochar application on physiochemical properties and nitrate degradation rate in a Siliciclastic Riverine Sandy soil
Authors: Alessandrino Luigi 
Published: September 2024

AbstractThis study investigated the efficacy of biochar as a soil amendment for enhancing soil physicochemical properties and solute transport dynamics, with implications for agricultural sustainability and environmental stewardship. Batch laboratory experiments and column studies were conducted to assess the effects of biochar application on soil parameters and solute transport under saturated conditions. The saturation soil extraction approach was employed in batch leaching tests, while column experiments replicated subsurface conditions. Transport modeling using CXTFIT 2.1 elucidated solute dispersion dynamics in biochar-amended soils. Batch experiments revealed significant alterations in soil pH, electrical conductivity, and nutrient release following biochar addition. Biochar exhibited adsorption capacity for fluoride ions and released dissolved organic carbon, highlighting its potential for soil carbon sequestration and microbial activity. Column studies demonstrated enhanced solute dispersion and increased microbial activity in biochar-amended soils, as evidenced by changes in breakthrough curves and degradation rates of nitrate. Indeed, nitrate first-order degradation coefficients were 9.08E-06 for the column with only sandy soil, 3.09E-05 and 1.47E-04 for the columns with minimum and maximum doses of biochar respectively. Biochar application significantly influenced soil physicochemical properties and solute transport dynamics, with potential implications for nutrient management and contaminant attenuation in agricultural systems. Despite limitations in laboratory-scale experiments, this research provides valuable insights into biochar-soil interactions. It underscores the need for further investigation under field conditions to validate findings and optimize biochar management practices for sustainable soil and environmental management.
Formulation and characterization of reduced fat muffins using a plant based fat replacer
Authors: Ahsan Mehak , Moin Abeera , Ashraf Humaira , Khan Alvina , Giuffrè Angelo Maria 
Published: September 2024

Abstract
Obesity and associated health alarms have encouraged increased awareness in developing healthier food alternatives, such as low-fat bakery products. This study explores a sustainable plant-based approach to formulate low-fat muffins by partially replacing butter with sago flour at levels of 25, 37, and 50% (w/w). The research designed to assess the physicochemical and pasting properties of wheat-sago flour composites and their impact on the texture, color, post-baking attributes, and sensory characteristics of the muffins. Results presented that the ash content of the fat-reduced muffins significantly improved, increasing from 1.08 to 3.09%. Sago concentration significantly affected solvent retention, swelling, sedimentation properties, pasting temperature, and both peak and breakdown viscosities. At 50% fat replacement, the muffins exhibited increased density and firmness, measuring 32.67 N, compared to full-fat and lower-fat samples. Sensory evaluations by semi-trained assessors rated both full-fat and reduced-fat muffins within the liking range, with scores ranging from 8.52 to 7.42. Lightness values showed no significant difference between full-fat and reduced-fat muffins. These findings suggest that sago flour is an effective partial fat replacer in muffin formulations, enhancing nutritional value while maintaining acceptable sensory qualities, with the 25 and 37% replacements achieving the best balance of properties.

Graphical abstract
Cesàro operators associated with Borel measures acting on weighted spaces of holomorphic functions with sup-norms
Authors: Beltrán-Meneu María J. , Bonet José , Jordá Enrique 
Published: September 2024

AbstractLet $$\mu $$
μ
be a positive finite Borel measure on [0, 1). Cesàro-type operators $$C_{\mu }$$

C
μ

when acting on weighted spaces of holomorphic functions are investigated. In the case of bounded holomorphic functions on the unit disc we prove that $$C_\mu $$

C
μ

is continuous if and only if it is compact. In the case of weighted Banach spaces of holomorphic function defined by general weights, we give sufficient and necessary conditions for the continuity and compactness. For standard weights, we characterize the continuity and compactness on classical growth Banach spaces of holomorphic functions. We also study the point spectrum and the spectrum of $$C_\mu $$

C
μ

on the space of holomorphic functions on the disc, on the space of bounded holomorphic functions on the disc, and on the classical growth Banach spaces of holomorphic functions. All characterizations are given in terms of the sequence of moments $$(\mu _n)_{n\in {\mathbb {N}}_0}$$

(

μ
n

)

n
∈

N
0

. The continuity, compactness and spectrum of $$C_\mu $$

C
μ

acting on Fréchet and (LB) Korenblum type spaces are also considered .
Ellipticity and the problem of iterates in Denjoy–Carleman classes
Authors: Fürdös Stefan , Schindl Gerhard 
Published: September 2024

AbstractIn 1978 Métivier showed that a linear differential operator P with analytic coefficients is elliptic if and only if the theorem of iterates holds for P with respect to any non-analytic Gevrey class. In this paper we extend this theorem to Denjoy–Carleman classes given by strongly non-quasianalytic weight sequences. The proof involves a new way to construct optimal functions in Denjoy–Carleman classes via Fourier integrals, which might be of independent interest. Moreover, we point out that the analogous statement for Braun–Meise–Taylor classes given by weight functions cannot hold. This signifies an important difference in the properties of Denjoy–Carleman classes and Braun–Meise–Taylor classes, respectively.
Innovative chemical functionalisation of biosolids for removing heavy metals and enhancing ammonium recovery from wastewater
Authors: Hedayati Marzbali M. , Hakeem I. G. , Ngo T. , Surapaneni A. , Shah K. 
Published: September 2024

AbstractThis study addresses ammonium removal from wastewater effluents. The utilisation of biosolids (stabilized sewage sludge) derived products as adsorbents was explored to contribute to sustainable sludge management. Biosolids were subjected to a mild acid (10% v/v HNO3) and alkali (0.5 M NaOH) treatment at ambient conditions followed by pyrolysis at 450 °C. R-COOH functional group was introduced to the biochar surface by HNO3 treatment followed by the ionic replacement of H+ with Na+ from NaOH treatment to form R-COO-Na group. The surface functional groups were studied via XPS, EDS, and FTIR analyses. The chemical treatment achieved on average about 75% removal of heavy metals from the product. The modified biochar showed a high ammonium adsorption capacity from both synthetic wastewater (17.03 mg g−1) and real digester effluent (16.1 mg g−1), higher than that of raw biosolids biochar (5.23 mg g−1 in synthetic effluent). The N-laden biochar (composed of 1.6 wt% surface nitrogen) with reduced heavy metals content could be applied to land as a slow-release nitrogen fertiliser. Economic analysis reveals a net present value of $1 million and a payback period of 8 years. This approach potentially reduces environmental pollution and provides economic benefits via cost-effective waste treatment solutions.
Graphical abstract
Biodiesel synthesis from low cost biomass wastes and its cost assessment inducing process optimization
Authors: Okwelum C. O. , Nwadiolu R. , Okolotu G. I. , Balogun T. A. , Adepoju T. F. , Oboreh J. S. , Chiemeke S. C. , Oboreh J. C. , Essaghah A. E. , Ibimilua A. F. , Taiga A. , Efih O. A. 
Published: September 2024

AbstractThis study employed low-cost biomass wastes for the synthesis of biodiesel that is cost-effective and environmentally friendly. The major raw material (oil) was obtained by steam distillation (SD) from Croton heliotropiifolius Kunth leaf (CHKL) and was characterized for its aptness for biodiesel production. Dwarft green coconut husk ash (DGCHA) was used as a bio-adsorbent for acid value reduction of Croton heliotropiifolius Kunth leaves oil (CHKLO). A novel, highly potassium-based catalyst was derived from Karpuravalli banana peels (KBP), calcined, and characterized using TGA, ZETA, FTIR, SEM-EDX, XRF-FS, and BET analysis. Biodiesel was synthesized using a microwave-assisted method, characterized, and compared with the recommended standard. The catalytic strength of the calcined Karpuravalli banana peel powder (CKBPP) was tested using a reusability test, and the cost evaluation of production was estimated. Results showed that the CHKL was rich in oil (43% wt./wt.), and the oil is highly acidic (5.23 mg KOH/g oil). At high particle size, the dwarf green coconut husk ash (DGCHA) bagasse reduced the acid value to a minimum (1.4 mg KOH/g oil) at 3 days. The developed novel catalyst from CKBPP indicated high potassium-calcium contents for base transesterification. Process optimization indicated that the predicted response data of 95.285% (wt./wt.) at T1 = 90 min, T2 = 60 oC, T3 = 4.5% (wt.), and T4 = 9 (vol./vol.) was validated in triplicate, and the average data value of 95.10% (wt./wt.) was established. Dataset on the quality of biodiesel showed that the produced biodiesel properties were in line with recommended standards. Economic appraisal data showed that the cost of producing 20 L of CHKLOB (biodiesel) was $4.73 at 1,500 to $1. The study concluded that the production of biodiesel from waste can be cost-effective and environmentally friendly if wastes are harness.
Graphical Abstract
ACE Enquiry in Primary care: A Qualitative Exploration of the Perspective of General Practitioners in Northern Ireland
Authors: Smyth Rafael , McSherry Dominic 
Published: September 2024

AbstractThis study sought to identify gaps in the current literature base by exploring the perspectives of General Practitioners (GPs) in Northern Ireland in relation to the significance, relevance, and feasibility of conducting a comprehensive inquiry into Adverse Childhood Experiences (ACEs) with patients. Semi-structured, in-depth interviews were conducted with 10 qualified GPs using Zoom Videoconferencing technology. Interviews were audio recorded and transcribed verbatim. Qualitative data was analysed using Theoretical Thematic Analysis (Braun & Clarke Qualitative Research in Psychology 3(2):77-101, 2006). Analysis revealed nine key superordinate themes. These themes encompassed various aspects such as the role of a GP, trauma-informed training, the advantages and barriers associated with conducting an ACE assessment, and the impact of childhood adversity on subsequent physical and mental health. This study provides valuable primary care professional insights that contribute to the existing evidence base. It highlights the importance of recognising, discussing, and screening for ACEs in primary care settings. Furthermore, this study explores a range of practical adjustments that could support the implementation of routine ACE enquiry within the primary healthcare system in Northern Ireland.
The Association Between Maternal ABO Blood Group and the Occurrence of Spontaneous Preterm Birth: A Retrospective Population-Based Cohort Study
Authors: Rom Eyal , Massalha Manal , Erez Offer , Salim Raed 
Published: September 2024

AbstractThere is limited and inconsistent evidence that imply a relationship between ABO blood types and rate of preterm birth (PTB). We aim to examine the association between maternal ABO blood group and PTB rate. A retrospective-study conducted at a university teaching institution on data collected between 2013 and 2019. Women who delivered a viable neonate at ≥ 24 weeks without major malformations were included. Indicated PTBs were excluded. PTB and early PTB were defined as deliveries that occurred < 37 and < 34 weeks respectively. PTB was further divided into 3 subgroups according to etiology: membranes rupture, intact membranes, and placental abruption regardless of membranes’ status. The primary outcome was spontaneous PTB rate. Of 19,301 women included, PTB and early PTB rates were 7.3% (1,418/19,301) and 2.3% (440/19,301) respectively. Rates of PTB in blood groups A, B, O, and AB, were 7.3%, 6.9%, 7.5%, and 7.5% respectively (p = 0.68). There was no significant difference according to etiology. Rates of early PTB were also comparable (p = 0.63). After adjustment for demographic and obstetric variables, blood type was associated with increased placental abruption rate among women who had early PTB (p = 0.038). Placental abruption rate was significantly higher in group A (22.5%) compared to group B (14.1%), (adjusted p = 0.04) and group O (14.0%), (adjusted p = 0.01). The rate in group AB was 17.1%, (adjusted p = 0.85). In conclusion, no association was found between a particular blood group and PTB rate. Women with group A, admitted in early PTB, had an increased risk that the underlying etiology was placental abruption.
Microstructural and properties investigations of tantalum-doped tungsten diboride ceramic coatings via HiPIMS and RF magnetron sputtering
Authors: Psiuk Rafał , Chrzanowska-Giżyńska Justyna , Denis Piotr , Wyszkowska Edyta , Wiśniewska Maria , Lipińska Marta , Wojtiuk Ewa , Kurpaska Łukasz , Smolik Jerzy , Mościcki Tomasz 
Published: September 2024

AbstractIn this work, tantalum-doped tungsten boride ceramic coatings were deposited from a single sputtering target with the radio frequency (RF) and high-power impulse magnetron sputtering (HiPIMS) methods. Two-inch torus targets were synthesised from pure elements with the spark plasma sintering (SPS) method with a stoichiometric composition of W1-xTaxB2.5 (x = 0, 0.08, 0.16, 0.24). Films were deposited with RF and HiPIMS power suppliers at process temperatures from RT to 600 °C. The substrate heating and the energy of the ionised material impacting the substrate increase the surface diffusivity of adatoms and are crucial in the deposition process. The results of SEM and XRD investigations clearly show that the addition of tantalum also changes the microstructure of the deposited films. The coatings without tantalum possess a finer microstructure than those with 24% of tantalum. The structure of films is homogeneous along the film thickness and composed mainly of columns with a (0001) preferred orientation. Deposited coatings are composed mainly of P6/mmm α-WB2 structures. The analysis of nanoindentation results allowed us to determine that ceramic coatings obtained with the HiPIMS method possess hardness above 41 GPa and a ratio of hardness to reduced Young modulus above 0.1. The thickness of HiPIMS-deposited films is relatively small: only around 60% of the RF magnetron sputtered coatings even when the average power input was two times higher. However, it has been shown that the RF coatings require heating the substrate above 400 °C to obtain a crystalline structure, while the HiPIMS method allows for a reduction of the substrate temperature to 300 °C.
Genome‐Enabled Parameterization Enhances Model Simulation of CH4 Cycling in Four Natural Wetlands
Authors: Zuo Yunjiang , He Liyuan , Wang Yihui , Liu Jianzhao , Wang Nannan , Li Kexin , Guo Ziyu , Zhang Lihua , Chen Ning , Song Changchun , Yuan Fenghui , Sun Li , Xu Xiaofeng 
Published: September 2024

AbstractMicrobial processes are crucial in producing and oxidizing biological methane (CH4) in natural wetlands. Therefore, modeling methanogenesis and methanotrophy is advantageous for accurately projecting CH4 cycling. Utilizing the CLM‐Microbe model, which explicitly represents the growth and death of methanogens and methanotrophs, we demonstrate that genome‐enabled model parameterization improves model performance in four natural wetlands. Compared to the default model parameterization against CH4 flux, genomic‐enabled model parameterization added another contain on microbial biomass, notably enhancing the precision of simulated CH4 flux. Specifically, the coefficient of determination (R2) increased from 0.45 to 0.74 for Sanjiang Plain, from 0.78 to 0.89 for Changbai Mountain, and from 0.35 to 0.54 for Sallie's Fen, respectively. A drop in R2 was observed for the Dajiuhu nature wetland, primarily caused by scatter data points. Theil's coefficient (U) and model efficiency (ME) confirmed the model performance from default parameterization to genome‐enabled model parameterization. Compared with the model solely calibrated to surface CH4 flux, additional constraints of functional gene data led to better CH4 seasonality; meanwhile, genome‐enabled model parameterization established more robust associations between simulated CH4 production rates and environmental factors. Sensitivity analysis underscored the pivotal role of microbial physiology in governing CH4 flux. This genome‐enabled model parameterization offers a valuable promise to integrate fast‐cumulating genomic data with CH4 models to better understand microbial roles in CH4 in the era of climate change.
Rootzone Soil Moisture Dynamics Using Terrestrial Water‐Energy Coupling
Authors: Sehgal Vinit , Mohanty Binayak P. , Reichle Rolf H. 
Published: September 2024

AbstractA lack of high‐density rootzone soil moisture (θRZ) observations limits the estimation of continental‐scale, space‐time contiguous θRZ dynamics. We derive a proxy of daily θRZ dynamics — active rootzone degree of saturation (SRZ) — by recursive low‐pass (LP) filtering of surface soil moisture (θS) within a terrestrial water‐energy coupling (WEC) framework. We estimate the LP filter parameters and WEC thresholds for the piecewise‐linear coupling between SRZ and evaporative fraction (EF) at remote sensing and field scale over the Contiguous U.S. We use θS from the Soil Moisture Active‐Passive (SMAP) satellite and 218 in‐situ stations, with EF from the Moderate Resolution Imaging Spectroradiometer. The estimated SRZ compares well against SMAP Level‐4 estimates and in‐situ θRZ, at the corresponding scale. The instantaneous hydrologic state (SRZ) vis‐à‐vis the WEC thresholds is proposed as a rootzone soil moisture stress index (SMSRZ) for near‐real‐time operational agricultural drought monitoring and agrees well with established drought metrics.
Cliff Notching Due To Swash Abrasion: Insights From Physical Experiments
Authors: Shen Yaxiong , Whittaker Colin N. , Dickson Mark E. 
Published: September 2024

AbstractNotch development at the base of sea cliffs is an important control on cliff recession rates, but a detailed mechanistic understanding of notch formation by swash abrasion is lacking. We conducted physical experiments, using homogeneous erodible rock simulants, to study notch‐forming mechanisms under periodic sediment‐laden bore impacts. Our findings reveal shifts in the temporal dynamics of notch development. Initially, swash uprush and vortex formation contribute to a positive feedback loop that creates a shallow and wide notch. Subsequently, upward erosion ceases, and notch backwear and downwear are dominated by the vortex. Eventually, sediment deposition armors the notch floor; this negative feedback loop reduces erosion. The sediment size determines the amount of erosion, with a range of grain sizes generating maximum erosion. This indicates a dependence on the momentum of the sediment particles entrained within the bore. This research reveals fundamental notch formation mechanisms driven by swash abrasion.
Occurrence and Causes of Large dB/dt Events and AL Bays in the Pre‐Midnight and Dawn Sectors
Authors: Milan S. E. , Bower G. E. , Fleetham A. L. , Imber S. M. , Schillings A. , Opgenoorth H. , Gjerloev J. , Paxton L. J. , Vines S. K. , Hubert B. , Hairston M. R. 
Published: September 2024

AbstractA necessary condition for the generation of Geomagnetically Induced Currents (GICs) that can pose hazards for technological infrastructure is the occurrence of large, rapid changes in the magnetic field at the surface of the Earth. We investigate the causes of such events or “spikes” observed by SuperMAG at auroral latitudes, by comparing with the time‐series of different types of geomagnetic activity for the duration of 2010. Spikes are found to occur predominantly in the pre‐midnight and dawn sectors. We find that pre‐midnight spikes are associated with substorm onsets. Dawn sector spikes are not directly associated with substorms, but with auroral activity occurring within the westward electrojet region. Azimuthally‐spaced auroral features drift sunwards, producing Ps6 (10–20 min period) magnetic perturbations on the ground. The magnitude of is determined by the flow speed in the convection return flow region, which in turn is related to the strength of solar wind‐magnetospheric coupling. Pre‐midnight and dawn sector spikes can occur at the same time, as strong coupling favors both substorms and westward electrojet activity; however, the mechanisms that create them seem somewhat independent. The dawn auroral features share some characteristics with omega bands, but can also appear as north‐south aligned auroral streamers. We suggest that these two phenomena share a single underlying cause. The associated fluctuations in the westward electrojet produce quasi‐periodic negative excursions in the AL index, which can be mis‐identified as recurrent substorm intensifications.
The April 2023 SYM‐H = −233 nT Geomagnetic Storm: A Classical Event
Authors: Hajra Rajkumar , Tsurutani Bruce Tsatnam , Lu Quanming , Horne Richard B. , Lakhina Gurbax Singh , Yang Xu , Henri Pierre , Du Aimin , Gao Xingliang , Wang Rongsheng , Lu San 
Published: September 2024

AbstractThe 23–24 April 2023 double‐peak (SYM‐H intensities of −179 and −233 nT) intense geomagnetic storm was caused by interplanetary magnetic field southward component Bs associated with an interplanetary fast‐forward shock‐preceded sheath (Bs of 25 nT), followed by a magnetic cloud (MC) (Bs of 33 nT), respectively. These interplanetary structures were led by a coronal mass ejection erupted from the Sun in association with an M1.7 X‐ray flare. At the center of the MC, the plasma density exhibited an order of magnitude decrease, leading to a sub‐Alfvénic solar wind interval for ∼2.1 hr. Ionospheric Joule heating accounted for a significant part (∼81%) of the magnetospheric energy dissipation during the storm main phase. Equal amount of Joule heating in the dayside and nightside ionosphere is consistent with the observed intense and global‐scale DP2 (disturbance polar) currents during the storm main phase. The sub‐Alfvénic solar wind is associated with disappearance of substorms, a sharp decrease in Joule heating dissipation, and reduction in electromagnetic ion cyclotron wave amplitude. The shock/sheath compression of the magnetosphere led to relativistic electron flux losses in the outer radiation belt between L* = 3.5 and 5.5. Relativistic electron flux enhancements were detected in the lower L* ≤ 3.5 region during the storm main and recovery phases. Equatorial ionospheric plasma anomaly structures are found to be modulated by the prompt penetration electric fields. Around the anomaly crests, plasma density at ∼470 km altitude and altitude‐integrated ionospheric total electron content are found to increase by ∼60% and ∼80%, with ∼33% and ∼67% increases in their latitudinal extents compared to their quiet‐time values, respectively.