bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cycloalkane Oxidation Catalyzed by Copper‐based Catalysts with H2O2 under Mild Conditions
Authors: Chimlert Jantira , Suktanarak Pattira , Plainpan Nukorn , Paokhan Mantana , Tuntulani Thawatchai , Leeladee Pannee 
Published: April 2023

AbstractCopper‐catalyzed cycloalkane oxidation using H2O2 as an oxidant was investigated under mild conditions. The copper catalysts studied in this work ranged from commercially‐available copper(II) salts to copper(II) complexes containing polypyridyl ligands. Various factors that affected catalytic activity of copper catalysts were elucidated. It was found that geometry of the copper complex in solution and coordinated anions played important roles in catalytic activity. The copper(II) complex generated in‐situ by mixing Cu(OAc)2 and TMPA ligand (TMPA=tris(2‐pyridylmethyl)amine) adopted trigonal bipyramidal geometry and was competent to catalyze cyclohexane oxidation with higher yields, compared to those of other Cu2+ species used in this work. The optimal catalytic condition was achieved using 1.0 % mol of Cu(OAc)2/TMPA and 10 equivalents of H2O2 with respect to cyclohexane in CH3CN at 33–35 °C for 3 hours, resulting in the total product yield of 44 %. Moreover, since cyclohexyl hydroperoxide was detected as a major product, the Fenton‐like mechanism via one electron process was proposed as a plausible mechanism in this cycloalkane oxidation. In addition, our catalytic system was further demonstrated to be applicable for oxidation of various cycloalkane substrates with moderate yields and relatively short time.
Graphene Quantum Dots Derived from Honey and Mangostin as Sustainable Materials to Construct Fluorescence Turn‐On Molecular Switches for Pesticide Detection
Authors: Lekshmi Chandranpillai Lalithabai , Swathy Unnikrishnapillai Saraswathy , Vijayan Keerthi , Simimole Haleema , Sumalekshmy Sarojiniamma 
Published: April 2023

AbstractExtensive use of pesticides in agriculture can lead to environmental pollution and potentially adverse health effects. A fluorescence Turn‐On molecular switch, derived from naturally occurring α‐mangostin (MN), isolated from the pericarp of mangosteen fruit and Graphene Quantum Dots (GQDs) synthesized from honey, was developed for the detection of carbofuran‐an organic toxic carbamate pesticide. GQDs derived from honey shows a strong fluorescence emission centered at 430 nm, which was efficiently quenched by the addition of MN. The quenching of fluorescence of GQDs by the addition of MN (OFF state) and the regaining of quenched fluorescence of GQDs‐MN system (ON state) upon the addition of the pesticide carbofuran was utilized as a detection strategy for the toxic pesticide carbofuran.
Water‐soluble Lignosulfonates: Structure, Preparation, and Application
Authors: Tang Tao , Fei Junhao , Zheng Yi , Xu Jian , He Huiwen , Ma Meng , Shi Yanqin , Chen Si , Wang Xu 
Published: April 2023

AbstractAs one of the key raw materials that replace petroleum materials in today‘s world, biomass resources could be regarded as a promising resource. Currently, lignin and its derivatives are the only lignocellulosic biomass found to possess aromatic rings. Extending the application area of lignin requires overcoming the limitations of its low hydrophilicity. Sulfonation process becomes the most effective method for preparing lignosulfonates. An analysis of the mechanisms by which different lignosulfonates are prepared. It compared the effects of various modification methods on charge density and sulfonate group content in lignosulfonates. It also examined how different separation techniques affect the properties of lignosulfonates. As a result of being more water‐soluble, there is also a review of cutting‐edge research in the fields of energy, medicine, and agriculture. Also, the possible uses of lignosulfonate are talked about, and ideas are given for how this compound could be improved in the future.
Electrospun Fabric Tin Oxide 1‐D Nanofibers: Approach Towards Flexible Electrode for Supercapacitor Application
Authors: Molane Avinash C. , Gavande Shivani S. , Nimbalkar Tanaji M. , Salunkhe Amol S. , More Pravin D. , Patil Vikas B. 
Published: April 2023

AbstractHerein, the facile electrospinning route is demonstrated to fabricate nanofibrous based tin oxide flexible electrode processed at different annealing temperatures and further envisaged in high‐performance energy storage application. Tin oxide (SnO2) processed at 400 °C of annealing temperature showcased excellent specific capacitance (844 F/g) along with interfacial capacitance (0.1434 F/cm2) at 1 mV/s of scan rate which was tested in 1 M NaOH aqueous electrolyte and exhibited remarkable stability even after 2000 cycles. Nanofibers with beads‐formation type morphology of the electrodes were confirmed through scanning electron microscopy. Hydrophilic nature of the electrode surface was confirmed by water contact angle measurements. The structural study was done with the help of X‐ray diffraction (XRD), Raman spectroscopy, Energy dispersive X‐ray analysis (EDAX) and X‐ ray photoelectron spectroscopy (XPS). In addition, the flexible symmetric supercapacitor device is believed to have an excellent flexibility and electrochemical stability during mechanical bending up to 180°, suggesting SnO2 as promising electrode material for applications in future flexible and wearable electronics devices.
Chiral Proline Amide‐Isothiouronium Salt Spaced with Diamine as an Efficient Bifunctional Organocatalyst for Enantioselective α‐Hydrazination of Aldehydes
Authors: Yeo Hyoung Min , Kim Taek Hyeon 
Published: April 2023

AbstractThe chiral proline amide‐isothiouronium salt‐based bifunctional organocatalyst was prepared by methylating of the corresponding chiral thiourea, containing more acidic and active N−H bonds compared to thiourea. This catalyst was applied to α‐hydrazination of aldehydes using azodicarboxylates, which can be transformed into β‐hydrazino alcohols, β‐amino alcohols, and α‐amino acid derivatives. Enantioselective α‐hydrazination of aldehydes has been successfully carried out with amide‐isothiouronium salt as a chiral catalyst. Various hydrazino aldehydes were obtained in high to quantitative yields and excellent enantioselectivities (of up to 99 % ee) in the presence of a benzoic acid additive.
Role of Ordered Mesoporous Silica Loaded with Cerium and with an Amine‐Modified Surface as an Effective Binder and Nano‐container in Corrosion Resistant Hybrid Coating
Authors: Shankar Kashyap Siddhartha , Basak Pratyay , Pendem Chandrashekar , Narayan Ramanuj , Ahmed Maqsood 
Published: April 2023

AbstractOrdered mesoporous silica was synthesized through sol‐gel technique under hydrothermal conditions by using tetraethylorthosilicate. The template free material was obtained by calcination and the channels of ordered mesoporous silica (OMS) were successfully loaded with cerium (corrosion inhibitor). This cerium loaded material was modified with N1‐(3‐Trimethoxysilylpropyl)diethylenetriamine through grafting with surface hydroxyl group. Subsequently, the surface‐modified material was actively used as a curing agent, host for corrosion inhibitors and filler as well in epoxy‐based coatings for mild steel. The mesoporous silica material was characterized by using a combination of various analytic and spectroscopic techniques like FT‐IR, powder‐XRD, N2 sorption, solid state 29Si and 13C MAS NMR studies. The physicochemical, physicomechanical, and thermal properties of the hybrid film were analyzed through standard techniques like FT‐IR, TGA‐DTA, DMTA and FE‐SEM. The coated hybrid film on mild steel was tested for corrosion inhibition by using potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) studies. The aforementioned studies revealed the developed coating system exhibited promising corrosion protection performance which was evident from icorr (6.65 nA), Ecorr (−502.850 mV), impedance (1.2×106 Ω) and phase angle (>80°). The observed water contact angle (WCA)>90° suggesting the hydrophobic nature of the coated surface.
Broadband Polarization‐Sensitive Photodetection of Magnetic Semiconducting MnTe Nanoribbons
Authors: Ye Kun , Yan Junxin , Liu Lixuan , Li Penghui , Yu Zhipeng , Gao Yang , Yang Mengmeng , Huang He , Nie Anmin , Shu Yu , Xiang Jianyong , Wang Shouguo , Liu Zhongyuan 
Published: April 2023

Abstract2D materials with low symmetry are explored in recent years because of their anisotropic advantage in polarization‐sensitive photodetection. Herein the controllably grown hexagonal magnetic semiconducting α‐MnTe nanoribbons are reported with a highly anisotropic (100) surface and their high sensitivity to polarization in a broadband photodetection, whereas the hexagonal structure is highly symmetric. The outstanding photoresponse of α‐MnTe nanoribbons occurs in a broadband range from ultraviolet (UV, 360 nm) to near infrared (NIR, 914 nm) with short response times of 46 ms (rise) and 37 ms (fall), excellent environmental stability, and repeatability. Furthermore, due to highly anisotropic (100) surface, the α‐MnTe nanoribbons as photodetector exhibit attractive sensitivity to polarization and high dichroic ratios of up to 2.8 under light illumination of UV‐to‐NIR wavelengths. These results demonstrate that 2D magnetic semiconducting α‐MnTe nanoribbons provide a promising platform to design the next‐generation polarization‐sensitive photodetectors in a broadband range.
Experimental study on the fatigue bond behavior of concrete beams reinforced with hybrid fiber‐reinforced polymer and steel bars
Authors: Xu Jiajing , Zhu Peng , Qu Wenjun 
Published: April 2023

AbstractThis paper presents an experimental program of the bond behavior of concrete beams reinforced with hybrid fiber‐reinforced polymer (FRP) and steel bars, and the bond behavior between flexural cracks is investigated. Under the static loading, both the slip of steel and glass FRP (GFRP) bars increased significantly after steel yielding, while the slip of steel bars presented a faster increase rate. A method of calculating the bond stress based on test data was proposed, and this method overcame the disadvantage of histogram distribution of the conventional method. An analytical model of calculating the bond stress was proposed, and was verified with the test results. Under the fatigue loading, the bond stress deteriorated more seriously with a higher upper limit of fatigue load. The slip increased rapidly at the initial stage, and remained approximately unchanged with the increase of fatigue cycles, and the slip increased dramatically when the beam was subjected to fatigue failure. After fatigue loading, the yielding strength and ultimate strength of steel bars showed an increase rate less than 5%, while the hardening phase decreased significantly. The ultimate tensile strength of GFRP bars after fatigue decreased in the range of 4.5%–32.3%, and the modulus for elasticity remained unchanged.
Stress–strain behavior and constitutive relation of rubberized plastic concrete under uniaxial and triaxial compression
Authors: Feng Ling‐Yun , Chen Ai‐Jiu , Liu Han‐Dong 
Published: April 2023

AbstractPlastic concrete is a kind of flexible concrete cutoff wall material, which is used to solve the problem of poor coordinated deformation ability between ordinary concrete cutoff wall and surrounding soil. It has the characteristics of small elastic modulus and large limit strain, which greatly improves the operation condition of cutoff wall. In order to save bentonite resources and recycle waste automobile tires, this paper crushed waste automobile tires into rubber particles and mixed them into plastic concrete, through the uniaxial compression test and triaxial compression test, obtained the corresponding stress–strain curve, rubberized plastic concrete strength and deformation properties are studied and the rubber particles and the relationship between dosage. The test results show that the compressive strength of rubberized plastic concrete decreases with the increase of rubber particles content, but the deformation capacity increases with the increase of rubber particles content. In this paper, the regression analysis of rubberized plastic concrete constitutive relation and failure criterion including the influence factor of rubber particles are helpful to promote the engineering application of rubberized plastic concrete and reduce the exploitation of natural resources and environmental pollution.
Activating supply chain business models' value potentials through Systems Engineering
Authors: Nuerk Jochen , Dařena František 
Published: April 2023

AbstractNew business opportunities, driven by smart digitalization technology and initiatives such as Industry 4.0, significantly change business models and their innovation rate. The complexity of methodologies developed in recent decades for balancing exploration and exploitation activities of digital transformation has risen. Still, the desired integration levels across organizational levels were often not reached. Systems thinking promises to holistically consider interdisciplinary relationships and objectives of various stakeholders across supply chain ecosystems. Systems theory‐based concepts can simultaneously improve value identification and aligned transformation among supply networks’ organizational and technical domains. Hence, the study proposes synthesizing management science concepts such as strategic alignment with enterprise architecture concepts and artificial intelligence (AI)‐driven business process optimization to increase innovation productivity and master the increasing rate of business dynamics at the same time. Based on a critical review, the study explores concepts for innovation, transformation, and alignment in the context of Industry 4.0. The essence has been compiled into a systems engineering‐driven framework for agile value generation on operational processes and high‐order capability levels. The approach improves visibility for orchestrating sustainable value flows and transformation activities by considering the ambidexterity of exploring and exploiting activities and the viability of supply chain systems and sub‐systems. Finally, the study demonstrates the need to harmonize these concepts into a concise methodology and taxonomy for digital supply chain engineering.
Consistent truncations and dualities
Authors: Butter Daniel , Hassler Falk , Pope Christopher N. , Zhang Haoyu 
Published: April 2023

Abstract
Recent progress in generalised geometry and extended field theories suggests a deep connection between consistent truncations and dualities, which is not immediately obvious. A prime example is generalised Scherk-Schwarz reductions in double field theory, which have been shown to be in one-to-one correspondence with Poisson-Lie T-duality. Here we demonstrate that this relation is only the tip of the iceberg. Currently, the most general known classes of T-dualities (excluding mirror symmetry) are based on dressing cosets. But as we discuss, they can be further extended to the even larger class of generalised cosets. We prove that the latter give rise to consistent truncations for which the ansatz can be constructed systematically. Hence, we pave the way for many new examples of T-dualities and consistent truncations. The arising structures result in covariant tensors with more than two derivatives and we argue how they might be key to understand generalised T-dualities and consistent truncations beyond the leading two derivative level.
Right-handed Dirac and Majorana neutrinos at Belle II
Authors: Han Tao , Liao Jiajun , Liu Hongkai , Marfatia Danny 
Published: April 2023

Abstract
We assess the ability of the Belle II experiment to probe the Dirac or Majorana nature of a massive right-handed neutrino (RHN) N in the MeV to GeV mass range. We consider the production and decay of RHNs to proceed via new interactions described by the standard model effective field theory (SMEFT) extended with right-handed neutrino fields (SMNEFT), and not via mass mixing with active neutrinos. We find that Belle II has the potential to discover N if kinematically accessible. We perform detailed simulations of the angular distributions of lepton pairs from the decay of N produced in two-body and three-body decays of B mesons. We show that for mN above 100 MeV, Belle II can distinguish between Dirac and Majorana neutrinos at more than the 5σ CL for most operators, and the combination of the production and decay operators can be identified from the subsequent decay of the heavy neutrino. Also, the production operators can be identified using three-body B meson decay for any mN if the B → DℓN and B → D*ℓN events can be well separated.
Bilinear Optimal Control of the Keller–Segel Logistic Model in 2D-Domains
Authors: Braz e Silva P. , Guillén-González F. , Perusato C. F. , Rodríguez-Bellido M. A. 
Published: April 2023

AbstractAn optimal control problem associated to the Keller–Segel with logistic reaction system is studied in 2D domains. The control acts in a bilinear form only in the chemical equation. The existence of an optimal control and a necessary optimality system are deduced. The main novelty is that the control can be rather singular and the state (cell density u and the chemical concentration v) remains only in a weak setting, which is not usual in the literature.
Soil Suppressiveness Against Pythium ultimum and Rhizoctonia solani in Two Land Management Systems and Eleven Soil Health Treatments
Authors: Kurm Viola , Visser Johnny , Schilder Mirjam , Nijhuis Els , Postma Joeke , Korthals Gerard 
Published: April 2023

AbstractThe soil microbiome is known to be crucial for the control of soil-borne plant diseases. However, there is still little knowledge on how to modify the soil microbiome to induce or increase disease suppressiveness. In the present study, we applied eleven soil health treatments combined with conventional and organic agricultural management in a long-term field experiment. Suppressiveness against Pythium ultimum and Rhizoctonia solani was assessed in bioassays for 2 years. In addition, the microbiome community composition and microbial abundance were determined. We found that while several treatments changed the microbial community composition compared to the control, only a combination treatment of anaerobic soil disinfestation, hair meal, and compost addition resulted in suppressiveness against P. ultimum. Pythium suppressiveness is likely to have been caused by an increased microbial abundance and activity. Moreover, the increased abundance of several bacterial taxa, such as Pseudomonas sp., Chryseobacterium sp., members of the family Chitinophagaceae, and the fungal genus Mortierella sp. and family Trichosporonaceae, was measured. There was no overall difference in suppressiveness between conventional and organic land management. Also, no suppressiveness against R. solani could be detected. Our results indicate that a treatment combining the reduction of microorganisms followed by a recovery phase with high amounts of organic amendments may be more effective in inducing suppressiveness than treatments consisting of only one of these measures.
Periprosthetic patella fractures in total knee replacement and revision surgeries: how to diagnose and treat this rare but potentially devastating complication—a review of the current literature
Authors: Masoni Virginia , Giustra Fortunato , Bosco Francesco , Lo Carmine Lorenzo , Capella Marcello , Cacciola Giorgio , Risitano Salvatore , Sabatini Luigi , Massè Alessandro 
Published: April 2023

Abstract
Purpose
Periprosthetic patella fractures (PPPFs) are infrequent but potentially devastating complications after total knee arthroplasty (TKA) and revision TKA (rTKA). These fractures may occur both in resurfaced and un-resurfaced patella. This review summarizes the current literature on PPPFs to help orthopedic surgeons diagnose and treat this uncommon but extremely challenging TKA complication.

Methods
A comprehensive search was performed in three databases: PubMed, SCOPUS, and EMBASE. All relevant information was retrieved and summarized in this narrative review.

Results
In the studies analyzed, there is a general trend in favor of nonsurgical treatment, except for implant loosening or extensor lag with extensor apparatus disruption, because surgery is often associated with poor clinical outcomes and high complication rates.

Conclusion
PPPF is a rare but catastrophic event in TKA and rTKA, occurring mainly in a reconstructed patella. Patient-, implant-, and surgical technique-related factors contribute to its multifactorial etiopathogenesis. Prevention plays a crucial role in reducing the PPPFs rate. Conservative management is the treatment of choice due to high surgery complication rates unless implant loosening, or extensor apparatus disruption occurs.
Reversible cerebral vasoconstriction syndrome: strategies to early diagnosis and the role of transcranial color-coded doppler ultrasonography (TCCD)
Authors: Merli Nicola , Padroni Marina , Azzini Cristiano , Bernardoni Andrea , Marcialis Carla , Tugnoli Valeria , Inchingolo Vincenzo , Pugliatti Maura 
Published: April 2023

Abstract
Background
Reversible
cerebral vasoconstriction syndrome (RCVS) is a cerebrovascular transitory condition characterized by severe headache, possible concomitant acute neurological symptoms, evidence of diffuse multifocal segmental constriction of cerebral arteries, and usually spontaneously resolving within 3 months. Putative causes and/or precipitating factors are vasoactive drugs—e.g., antidepressants, α-sympathomimetics, triptans—post-partum, and immunosuppressants.

Case presentation
We report the case of a middle-aged woman referred to the emergency room (ER) with a 7-day long intense headache and vomit. Cerebral non-contrast computed tomography (CT) was negative for acute ischemic lesions or intracranial bleedings. She was again referred to ER 7 days later with additional fluctuating episodes of weakness in left arm and both lower limbs. A new brain CT was negative. Due to worsening headache, a transcranial color-coded Doppler (TCCD) was performed, which showed diffuse multifocal blood flow acceleration in all principal intracranial vessels, and particularly on the right hemisphere. These findings were subsequently confirmed at MR angiogram and digital subtraction angiography.

Conclusion
TCCD imaging is a non-invasive and relatively inexpensive tool which provides real-time information on cerebrovascular function, blood flow velocities, and hemodynamic changes. TCCD may be a powerful tool in the early detection of acute infrequent cerebrovascular conditions, as well as in monitoring their course and the therapeutic response.
Simulation-based evaluation of SAR and flip angle homogeneity for five transmit head arrays at 14 T
Authors: Harrevelt Seb D. , Roos Thomas H. M. , Klomp Dennis W. J. , Steensma Bart R. , Raaijmakers Alexander J. E. 
Published: April 2023

Abstract
Introduction
Various research sites are pursuing 14 T MRI systems. However, both local SAR and RF transmit field inhomogeneity will increase. The aim of this simulation study is to investigate the trade-offs between peak local SAR and flip angle uniformity for five transmit coil array designs at 14 T in comparison to 7 T.

Methods
Investigated coil array designs are: 8 dipole antennas (8D), 16 dipole antennas (16D), 8 loop coils (8D), 16 loop coils (16L), 8 dipoles/8 loop coils (8D8L) and for reference 8 dipoles at 7 T. Both RF shimming and kT-points were investigated by plotting L-curves of peak SAR levels vs flip angle homogeneity.

Results
For RF shimming, the 16L array performs best. For kT-points, superior flip angle homogeneity is achieved at the expense of more power deposition, and the dipole arrays outperform the loop coil arrays.

Discussion and conclusion
For most arrays and regular imaging, the constraint on head SAR is reached before constraints on peak local SAR are violated. Furthermore, the different drive vectors in kT-points alleviate strong peaks in local SAR. Flip angle inhomogeneity can be alleviated by kT-points at the expense of larger power deposition. For kT-points, the dipole arrays seem to outperform loop coil arrays.