bluuebunny/crossref_metadata_2025_split huggingface dataset:
Magnetically Recyclable Nanoscale Zero‐Valent Iron‐Mediated PhotoRDRP in Ionic Liquid toward Smart, Functional Polymers
Authors: Sahu Bhanendra , Sinha Priyank , Kumar Devendra , Patel Kundan , Banerjee Sanjib 
Published: October 2023

AbstractA facile method based on recyclable nanoscale zero‐valent iron (nZVI)‐mediated photoinduced reversible deactivation radical polymerization in ionic liquid (IL) leads to the synthesis of narrow disperse poly(tert‐butyl methacrylate) (PTBMA), amphiphilic PTBMA‐block‐poly(poly(ethylene glycol)methacrylate) diblock copolymer and double hydrophilic poly(methacrylic acid)‐block‐poly(poly(ethylene glycol)methacrylate) (PMAA‐b‐PPEGMA) diblock copolymers thereof. Stimuli response of the synthesized PMAA‐b‐PPEGMA diblock copolymer against variation in pH and temperature is assessed. Recyclability of the nZVI (catalyst) and IL (solvent) is established. Polymerization may be switched ON or OFF, simply by turning the UVA light irradiation ON or OFF, offering temporal control. The diblock copolymer self‐aggregates into spherical nanoaggregates which are employed for encapsulation of coumarin 102 (C102, a typical hydrophobic dye), describing their potential application in drug delivery applications. The facile synthesis strategy may open up new avenues for the preparation of intelligent functional polymers for engineering and biomedical applications.
Detoxification of Wheat Gluten by Enzymatic Transamidation under Reducing Condition and Its Application in Typical Food Model
Authors: Zhang Yue , Wu Haoyi , Zhang Yan , Fu Linglin 
Published: October 2023

ScopeGluten, the primary network builder of wheat dough, is responsible for celiac disease or wheat allergy. Transamidation of gluten under reduction conditions has been shown to reduce the potential toxicity of celiac disease, but its application in food preparation has not been extensively studied. This work investigates the use of transamidation in food preparation to address this gap in knowledge.Methods and resultsThis study investigates the effects of transamidation on the toxicity of commercial wheat flour and the apparent structure, digestive level, and rheological characteristics of resultant dough and steamed bread, as a typical food model. The results show that transamidation starts at the kneading stage, as evaluated by using R5 enzyme‐linked immunoassay and rat basophils. The potential toxicity of celiac disease is reduced by about 83% when 1% microbial transglutaminase (mTG), 2% l‐lysine, and 1% reduced glutathione (GSH) are added, while retaining the original physical and rheological properties of wheat flour. The additional of reduced GSH also improves the in vitro protein digestibility.ConclusionsAlthough it cannot be a celiac disease treatment directly, this study suggests that transamidation can serve as an alternative method for reducing the gluten toxicity of wheat flour‐based food products.
One hundred fifty GHz folded dipole antenna‐on‐chip based on artificial magnetic conductor structure
Authors: Jung Ji‐In , Choi Ui‐Gyu , Yang Jong‐Ryul 
Published: October 2023

AbstractA folded dipole antenna using an artificial magnetic conductor (AMC) structure is proposed to improve the frequency bandwidth and reduce the size of the antenna on a chip. To change the distribution of the electromagnetic (EM) field, the proposed AMC structure shaped with square‐in‐square rings (SSRs) is arranged along the radiating metal of the folded dipole antenna and implemented on the lowermost metal layer of the backend oxide layers (BEOLs) between the radiating metal of the top layer of the BEOL and the ground plane of the bottom of the substrate. The SSR of the proposed antenna‐on‐chip (AoC) widens the frequency bandwidth by varying the electrical length to the ground and reduces the physical size of the radiating metal by increasing the effective permittivity. The 3D EM‐wave simulation shows that the proposed AMC structure changes the distribution of EM‐wave in the BEOL and Si substrate such that more EM fields are condensed around the radiating metal and the electrical length to the ground is nonuniform and longer. The AoC with the proposed AMC structure was fabricated using a 65‐nm standard complementary metal‐oxide semiconductor process with one‐poly and nine‐metal. Compared with the conventional 150‐GHz antenna that was implemented on the same die, the proposed differential antenna was measured to be a −10 dB bandwidth of 46 GHz, with a 1.12‐times improvement, and a size reduction of 20.4%. The measured gain of the proposed antenna was −5.99 dBi including the passive balun with an insertion loss of −1.36 dB in simulation.
Insight into numerical characteristics of embedded finite elements for pile‐type structures employing an enhanced formulation
Authors: Granitzer Andreas‐Nizar , Tschuchnigg Franz , Hosseini Saman , Brasile Sandro 
Published: October 2023

AbstractA number of problems encountered in the field of computational geotechnics requires the modelling of numerous pile‐type structures embedded in a three‐dimensional soil continuum. Traditional modelling approaches to this problem result in computational costs that must be regarded as unbearable for most practical purposes. As an attractive alternative, we propose an enhanced embedded FE model with implicit interaction surface (EB‐I) where coupling between the contacting domains is realized by an implicit surface‐to‐volume (2D‐to‐3D) coupling scheme. As a novelty, the latter implements a non‐linear interface constitutive model that allows for explicit consideration of endpoint interaction, but does not represent a constraint for the solid mesh generation. As the slender structure is discretized employing the Timoshenko beam theory, shear deformability is explicitly considered, as opposed to earlier EB‐I‐type models reassessed in this paper. The credibility of the proposed EB‐I is numerically validated on the basis of comparative studies. It is found that the 2D‐to‐3D coupling scheme generally improves the well‐posedness of the resultant global stiffness matrix, making the proposed EB‐I computationally competitive to geometrically simplified line‐to‐volume coupling schemes. Future lines of research are carefully addressed throughout this work and include the normal stress recovery technique as well as applications to large‐scale simulations.
Algebra preconditionings for 2D Riesz distributed‐order space‐fractional diffusion equations on convex domains
Authors: Mazza Mariarosa , Serra‐Capizzano Stefano , Sormani Rosita Luisa 
Published: October 2023

AbstractWhen dealing with the discretization of differential equations on non‐rectangular domains, a careful treatment of the boundary is mandatory and may result in implementation difficulties and in coefficient matrices without a prescribed structure. Here we examine the numerical solution of a two‐dimensional constant coefficient distributed‐order space‐fractional diffusion equation with a nonlinear term on a convex domain. To avoid the aforementioned inconvenience, we resort to the volume‐penalization method, which consists of embedding the domain into a rectangle and in adding a reaction penalization term to the original equation that dominates in the region outside the original domain and annihilates the solution correspondingly. Thanks to the volume‐penalization, methods designed for problems in rectangular domains are available for those in convex domains and by applying an implicit finite difference scheme we obtain coefficient matrices with a 2‐level Toeplitz structure plus a diagonal matrix which arises from the penalty term. As a consequence of the latter, we can describe the asymptotic eigenvalue distribution as the matrix size diverges as well as estimate the intrinsic asymptotic ill‐conditioning of the involved matrices. On these bases, we discuss the performances of the conjugate gradient with circulant and ‐preconditioners and of the generalized minimal residual with split circulant and ‐preconditioners and conduct related numerical experiments.
Advanced structural and multi‐functional sandwich composites with prismatic and foam cores: A review
Authors: Kamble Zunjarrao 
Published: October 2023

AbstractAdvanced sandwich structures have emerged as new multifunctional structures with low density and good mechanical performance. Sandwich composites have high strength to weight and high stiffness to weight ratio. Good thermal and sound insulation can be provided using sandwich composite materials. Sandwich composites have high energy absorbing capacity. Multifunctional sandwich composites exhibit mechanical performance and other functional properties such as energy storage, electrical conductivity, etc. Further, the core can be used for routing wires, foam filling, fluid storage, embedding bars, etc. Thus, the multifunctionality can be introduced to the resuting composite materials. This article reviews current research on innovative sandwich structures with integrally woven corrugated core, honeycomb, foam, and 3D printed core architectures, emphasizing their multifunctionality. Aspects of sandwich structure with types of face and core structure design, material design, mechanical properties, and panel performance and damage, including multifunctional benefits, are reviewed. Examples of engineering and modern uses of sandwich structures are presented, covering hypersonic vehicles, civil and marine engineering, electronics, and biological fields. A list of areas for future study initiatives is also included. This review will serve as a baseline for future studies to do more research in the same direction.Highlights
A detailed review of various types of core materials and sandwich structures is presented.
Sandwich structures have high energy absorbing capacity.
3D woven sandwich structures, their manufacturing and failure mechanics is discussed.
Modern applications of sandwich structures are detailed.
Modeling of novel circular gait motion through daisy sequence fitting algorithm in a vertical climbing snake robot
Authors: Megalingam Rajesh Kannan , Senthil Aravind Prakash , Raghavan Dhananjay , Manoharan Sakthiprasad Kuttankulangara 
Published: October 2023

AbstractSnake robots can be used in multiple tasks, like, climbing, surveillance, pipe inspection, welding, and so forth. Current gaits of snake robots do not support rotation on a single horizontal plane in a circular fashion of a pole or tree at a fixed height. This makes snake robot extremely difficult to take the end effector to the desired target position and orientation. In addition, torque requirement of individual actuators or links of snake robot proportionally increases based on the number of links to be lifted while performing any task. In this paper, we propose a new gait called circular gait using the Daisy Sequence Fitting algorithm to solve the problems of circular rotation on a horizontal plane at a certain height with low torque. A sliding mode (SM) controller is implemented to achieve the circular gait's required position dynamically. Simulation results show that using the proposed circular gait, the end effector can be moved to any point on the circumference of the fixed horizontal plane of the pole or tree with a lesser torque. For the 0.5 kg module, circular gait moved the end effector to the target point using only 4.5 N m torque. The SM controller outperforms the proportional, integral, and derivative controllers in terms of response characteristics.
Yolk‐Shell MnSe/ZnSe Heterostructures with Selenium Vacancies Encapsulated in Carbontubes for High‐Efficiency Sodium/Potassium Storage
Authors: Wang Xianchao , Zhao Jing , Chen Ye , Zhang Xuan , Zhu Kai , Wang Qian , Yan Jun , Cao Dianxue , Wang Guiling 
Published: October 2023

AbstractThe pursuit of high‐performance batteries has propelled the investigation into advanced materials and design methodologies. Herein, the yolk‐shell MnSe/ZnSe heterojunction encapsulated in hollow carbontubes (MnSe/ZnSe@HCTs) is prepared as a prospective electrode material for sodium/potassium batteries. The band structure in the heterojunction is methodically adjusted and regulated by intentionally utilizing Mn with unpaired electrons in the 3d orbital. The ZnSe shell confer effectively mitigates volumetric expansion challenges inherent in ions insertion/extraction processes and 1D carbontubular conductive substrate avert the aggregation of MnSe/ZnSe nanoparticles. Concurrently, the heterojunctions implantation induces sublattice distortion and charge redistribution, enriching active sites and regulating band structure. The selenium vacancies within these heterojunctions contribute to the provision of abundant active sites, thereby promoting efficient ions insertion/extraction. In sodium‐ion batteries (SIBs), MnSe/ZnSe@HCTs present a superior capacity of 475 mA hg−1 at 0.1 A g−1 and sustains a capacity of 408.5 mAh g−1 even after 1000 cycles. In potassium‐ion batteries (KIBs), MnSe/ZnSe@HCTs deliver a higher specific capacity of 422 mAh g−1 at a current density of 0.1 A g−1 and maintain a high coulombic efficiency of 99% after 1000 cycles. The yolk‐shell structured MnSe/ZnSe heterojunction demonstrates excellent electrode properties for high‐performance sodium/potassium batteries, holding significant promise for future energy storage applications.
Rainwater harvesting and supplemental irrigation for cotton cultivation in Minas Gerais, Brazil
Authors: Adriana Calderan Gregolin , Emmanuel Salgado‐Funes , Jose Tiburcio , Ingrid Zabaleta 
Published: October 2023

AbstractThe North of Minas Gerais, a large inland state in southeastern Brazil, is going through the worst drought of the last 80 years, only compared with the drought that occurred in the 1930s, when there was general devastation in the agricultural and livestock sector. Nevertheless, the cotton crop continues to stand out in the region as one of the few agricultural alternatives capable of generating income and employment due to its characteristic resistance to the effects of drought, which is not the case with other traditional crops. To this end, the Cooperativa dos Produtores Rurais de Catuti Ltda ‐ COOPERCAT (Cooperative of Rural Producers of Catuti) installed eight “Demonstration Units” (DUs) of cotton under supplemental irrigation through rainwater capture in the municipalities of Catuti, Mato Verde, Monte Azul, and Pai Pedro. This study aims to demonstrate that the adaptation of cotton production systems through the “Supplemental Irrigation” method in critical periods provides and guarantees family farmers sustainable cotton production and, on the other hand, to evaluate a production model suitable to the climatic reality of Northern Minas. Since the implementation of this technology, cotton fiber production has increased by 72% from 2015 to date in a 19% smaller area, and total cotton production increased by 58%. As of 2022, cotton producers continue to use this supplemental irrigation methodology, demonstrating that the technology is viable, impacts cotton production, and is effective as a resilience measure to climate change and drought. In addition, this technology proves to be in line with Brazilian public policies, adds value to cotton production, addresses food security, and acts as a model for irrigation initiatives in Minas Gerais and other areas of Brazil.
Octagons Revisited
Authors: Schwarz Michael , Seidl Helmut 
Published: October 2023

AbstractWeakly relational domains have enjoyed tremendous success in the area of program analysis, since they offer a decent compromise between precision and efficiency. Octagons, in particular, have widely been studied to obtain efficient algorithms which, however, come with intricate correctness arguments. Here, we provide simplified cubic time algorithms for computing the closure of Octagon abstract relations both over the rationals and the integers which avoid introducing auxiliary variables. They are based on a more general formulation by means of 2-projective domains which allows for an elegant short correctness proof. The notion of 2-projectivity also lends itself to efficient algorithms for incremental normalization. For the Octagon domain, we also provide an improved construction for linear programming based best abstract transformers for affine assignments.
Quantum Constant Propagation
Authors: Chen Yanbin , Stade Yannick 
Published: October 2023

AbstractA quantum circuit is often executed on the initial state where each qubit is in the zero state. Therefore, we propose to perform a symbolic execution of the circuit. Our approach simulates groups of entangled qubits exactly up to a given complexity. Here, the complexity corresponds to the number of basis states expressing the quantum state of one entanglement group. By doing that, the groups need neither be determined upfront nor be bound by the number of involved qubits. Still, we ensure that the simulation runs in polynomial time - opposed to exponential time as required for the simulation of the entire circuit. The information made available at gates is exploited to remove superfluous controls and gates. We implemented our approach in the tool quantum constant propagation (QCP) and evaluated it on the circuits in the benchmark suite MQTBench. By applying our tool, only the work that cannot be carried out efficiently on a classical computer is left for the quantum computer, hence exploiting the strengths of both worlds.
Three conjectures about character sums
Authors: Granville Andrew , Mangerel Alexander P. 
Published: October 2023

AbstractWe establish that three well-known and rather different looking conjectures about Dirichlet characters and their (weighted) sums, (concerning the Pólya–Vinogradov theorem for maximal character sums, the maximal admissible range in Burgess’ estimate for short character sums, and upper bounds for $$L(1,\chi )$$

L
(
1
,
χ
)

and $$L(1+it,\chi )$$

L
(
1
+
i
t
,
χ
)

) are more-or-less “equivalent”. We also obtain a new mean value theorem for logarithmically weighted sums of 1-bounded multiplicative functions.
Impact of right ventricular-to-pulmonary artery coupling on remodeling and outcome in patients undergoing transcatheter edge-to-edge mitral valve repair
Authors: Koschutnik Matthias , Donà Carolina , Nitsche Christian , Kammerlander Andreas A. , Dannenberg Varius , Brunner Christina , Koschatko Sophia , Mascherbauer Katharina , Heitzinger Gregor , Halavina Kseniya , Spinka Georg , Winter Max-Paul , Hülsmann Martin , Bartko Philipp E. , Hengstenberg Christian , Mascherbauer Julia , Goliasch Georg 
Published: October 2023

Abstract

Background
Right ventricular-to-pulmonary artery (RV–PA) coupling has recently been shown to be associated with outcome in valvular heart disease. However, longitudinal data on RV dysfunction and reverse cardiac remodeling in patients following transcatheter edge-to-edge mitral valve repair (M-TEER) are scarce.

Methods
Consecutive patients with primary as well as secondary mitral regurgitation (MR) were prospectively enrolled and had comprehensive echocardiographic and invasive hemodynamic assessment at baseline. Kaplan–Meier estimates and multivariable Cox-regression analyses were performed, using a composite endpoint of heart failure hospitalization and death.

Results
Between April 2018 and January 2021, 156 patients (median 78 y/o, 55% female, EuroSCORE II: 6.9%) underwent M-TEER. On presentation, 64% showed impaired RV–PA coupling defined as tricuspid annular plane systolic excursion to pulmonary artery systolic pressure (TAPSE/PASP) ratio < 0.36. Event-free survival rates at 2 years were significantly lower among patients with impaired coupling (57 vs. 82%, p < 0.001), both in patients with primary (64 vs. 91%, p = 0.009) and secondary MR (54 vs. 76%, p = 0.026). On multivariable Cox-regression analyses adjusted for baseline, imaging, hemodynamic, and procedural data, TAPSE/PASP ratio < 0.36 was independently associated with outcome (adj.HR 2.74, 95% CI 1.17–6.43, p = 0.021).
At 1-year follow-up, RV–PA coupling improved (TAPSE: ∆ + 3 mm, PASP: ∆ − 10 mmHg, p for both < 0.001), alongside with a reduction in tricuspid regurgitation (TR) severity (grade ≥ II: 77–54%, p < 0.001).

Conclusions
TAPSE/PASP ratio was associated with outcome in patients undergoing M-TEER for primary as well as secondary MR. RV–PA coupling, alongside with TR severity, improved after M-TEER and might thus provide prognostic information in addition to established markers of poor outcome.

Graphical abstract
Intrinsic functional brain connectivity changes following aerobic exercise, computerized cognitive training, and their combination in physically inactive healthy late-middle-aged adults: the Projecte Moviment
Authors: Dimitriadis Stavros I. , Castells-Sánchez Alba , Roig-Coll Francesca , Dacosta-Aguayo Rosalía , Lamonja-Vicente Noemí , Torán-Monserrat Pere , García-Molina Alberto , Monte-Rubio Gemma , Stillman Chelsea , Perera-Lluna Alexandre , Mataró Maria 
Published: October 2023

AbstractLifestyle interventions have positive neuroprotective effects in aging. However, there are still open questions about how changes in resting-state functional connectivity (rsFC) contribute to cognitive improvements. The Projecte Moviment is a 12-week randomized controlled trial of a multimodal data acquisition protocol that investigated the effects of aerobic exercise (AE), computerized cognitive training (CCT), and their combination (COMB). An initial list of 109 participants was recruited from which a total of 82 participants (62% female; age = 58.38 ± 5.47) finished the intervention with a level of adherence > 80%. Only in the COMB group, we revealed an extended network of 33 connections that involved an increased and decreased rsFC within and between the aDMN/pDMN and a reduced rsFC between the bilateral supplementary motor areas and the right thalamus. No global and especially local rsFC changes due to any intervention mediated the cognitive benefits detected in the AE and COMB groups. Projecte Moviment provides evidence of the clinical relevance of lifestyle interventions and the potential benefits when combining them.