bluuebunny/crossref_metadata_2025_split huggingface dataset:
Thermal protective and hydrophobic coating on polyimide resin matrix composites surface for improved aging resistance
Authors: Fan Zhaoyang , Xiong Chao , Yin Junhui , Zou Youchun , Zhang Yu , Zhu Xiujie 
Published: August 2024

AbstractPolyimide composites are easily degraded in high temperature and high humidity environments for long service, which reduces their reliability and stability in aerospace, electronic components, weapons, and other fields. In this paper, the inorganic and organic multiphase double‐layer coating was prepared. The insulating layer was made of vinyl polysilazane resin as the base material and hollow glass microspheres as the filler. The hydrophobic layer consisted of polydimethylsiloxane as the base material, hollow phenolic microspheres, and nano‐TiO2 as the filler. The heat resistance, hydrophobic properties, and aging resistance of the coated polyimide resin matrix composites were studied. The results showed that the thickness of the double‐layer coating was about 200 μm. Under the 200°C thermal insulation test, the maximum temperature drop can be achieved at 59.7°C. After adding 5 wt% TiO2, the static contact angle of composites was increased from 86.2° to 127.7°. Significantly, the hydrophobic performance was improved by 48.1%, which was due to the construction of micro‐nano structures in the surface layer coating. In the accelerated hydrothermal aging tests, the bending properties of coated composite materials can be improved by 8.5%, 3.2%, and 8.7% in water, alkali, and acid environments, respectively. The moisture absorption of glass fiber and the pyrolysis of polyimide led to the degradation of the mechanical properties. The existence of heat‐resistant and hydrophobic coating could effectively eliminate this adverse effect, which was of great significance for polyimide composites to cope with various service environments.Highlights
A novel coating consisting of thermal insulating and hydrophobic layers was developed on glass fiber reinforced polyimide composites (G/PI) composites.
The maximum temperature drop of coating can be achieved at 59.7°C.
The static contact angle of coated G/PI composites was increased from 86.2° to 127.7°.
In the aging tests, the protective effect of the coating resulted in improved mechanical strengths of G/PI composites.
The microscopic damage morphology was performed to analyze the anti‐aging properties of the coating.
Analysis of damage evolution in single‐lap and double‐lap bolted joints of carbon fiber reinforced polymer plates based on load distribution
Authors: Wang Haiyan , Feng Yan , Wang Qingchao , Yu Wanchun , Han Yan 
Published: August 2024

AbstractIt is important to study damage evolution as well as failure of carbon fiber reinforced polymer (CFRP) plates bolted joints. Therefore, the quasi‐static tensile test on single‐lap and double‐lap CFRP plates bolted joints was conducted. Meanwhile, the tensile strength prediction model for titanium alloy bolted joint of CFRP plates was established based on the improved 3D Hashin failure criterion, then a theoretical model was proposed to accurately predict the load distributions and tilt angle of bolted joints. Thus, the load–displacement curves were divided into four stages, and load distributions at different stage points as well as the relationship between tilt angle of bolt and load variation were obtained. The damage evolution of single‐lap and double‐lap at different stage points was analyzed respectively, and failure mechanisms were revealed based on load distribution. The results show that the ultimate failure of single‐lap is caused by the intrusion of bolt head into CFRP plates, while double‐lap is caused by the compression deformation of central plate. The numerical simulation works are in high agreement with the experimental results.Highlights
Calculate the load distribution at single‐lap and double‐lap bolted joints.
Obtain the relationship between bolts tilt angle and load variation.
Analysis of damage evolution in bolt‐hole wall of carbon fiber reinforced polymer (CFRP) plates.
Using loads to reveal the failure mechanisms of single‐lap and double‐lap bolted joints of CFRP plates.
Preparation of aqueous silane‐graphene oxide co‐modified cellulose fibers/natural rubber composites via flash extrusion dispersion process
Authors: Li Xiangxu , Wu Lei , Lai Qingxiang , Xu Yifan , Wang He , Wang Chuansheng , Bian Huiguang 
Published: August 2024

AbstractCellulose fibers were modified via aqueous silane‐graphene oxide (GO) coordination by flash drying and extrusion dispersion process. The adsorption of GO reduced the polarity of the cellulose fiber surface and attenuated the agglomeration effect between the cellulose fibers, thus facilitating the dispersion of fibers in the rubber matrix. Adding aqueous 3‐aminopropylsilane oligomer (8150) incorporated active sites on the surface of cellulose fibers, thereby improving the interfacial binding properties of cellulose nano fibers (CNFs) and natural rubber (NR). After blending the modified CNFs with NR latex, high‐temperature flocculation was performed using an atomised flash device. Finally, CNF/NR was pre‐dispersed through a twin‐screw extruder, after which a CNF/NR masterbatch with excellent performance was prepared. Experimental results revealed that composites prepared using GO‐8150 via the flash drying‐twin‐screw dispersion process exhibited excellent dispersion characteristics, processing properties, mechanical properties, rolling resistance, wear resistance, and heat generation properties. Compared with traditional dry mixing, the composites prepared by flash drying‐twin‐screw dispersion process showed a 16.95% increase in tensile strength, 16.07% increase in 300% constant elongation, 19.01% reduction in abrasion consumption, 42.26% reduction in rolling resistance, and a reduction in the Payne effect. This study offers an efficient and environmentally friendly method for the high‐value utilization of natural fibers and the preparation of NR composites with excellent properties, while providing a green and nonpolluting modification process with no acidic liquid discharge.Highlights
GO‐8150 reduces the polarity of the fibers and promotes dispersion.
The flash extrusion dispersion process achieves green flocculation.
42% lower rolling resistance for rubber composites.
Exploring Conformational Preferences in XC(W)ZY Molecules With X, Y = F, Cl, Br and W, Z = O, S, Se: Unraveling the Influence of Conjugative and Anomeric Interactions
Authors: Custodio Castro Michelle T. , Della Védova Carlos O. , Romano Rosana M. 
Published: August 2024

ABSTRACTThe relative stabilities of the syn‐ and anti‐conformers of 72 molecules belonging to the XC(W)ZY type, with X, Y = F, Cl, Br and W, Z = O, S, Se, have been computed using the B3LYP/aug‐cc‐pVDZ approximation. The conformational preferences, represented by the energy differences between the two rotamers, exhibit a systematic trend in relation to both the halogen atoms and the chalcogen atoms. These computational predictions are in agreement with available experimental results. The NBO formalism was employed to assess the influence of both the conjugative and anomeric interactions on the relative energy of the conformers. It has been determined that the conjugative interaction provides a satisfactory explanation for the energy differences between rotamers. In contrast, the anomeric interactions favors the syn‐conformation in all cases. The relative stabilities between XC(W)ZY/YC(W)ZX and XC(W)ZY/XC(Z)WY constitutional isomers have also been computed and correlated with the experimental data.
Study of curing kinetics of 4‐ (dimethylsilyl) butyl ferrocene grafted HTPB and effect of catalysts by differential scanning calorimetry
Authors: Hoque Ehtasimul , Ghosal Subhajit , Patil Rajendra S. , Jagadeeswar Rao T. V. 
Published: August 2024

AbstractThe cure kinetics of 4‐ (dimethylsilyl) butyl ferrocene grafted hydroxyl terminated polybutadiene (HTPB) with Isophorone diisocyante (IPDI) was investigated using differential scanning calorimeter (DSC). Furthermore, the catalytic effect of Iron (III) acetylacetonate (Fe(AA)3) and Dibutyltin dilaurate (DBTDL) on the curing reaction was studied. The experimental data was fitted to Kissinger and Ozawa models, and the kinetic parameters were expressed as Arrhenius activation energy (E), pre‐exponential factor (A) and rate constants. The Crane model was explored to determine the reaction order of the curing reaction. The study categorically showed that the activation energy of the curing reaction with 4‐ (dimethylsilyl) butyl ferrocene grafted HTPB is higher as compared to the pure hydroxyl terminated polybutadiene (HTPB) based system. However, the rate of curing reaction is higher with 4‐ (dimethylsilyl) butyl ferrocene grafted HTPB as compared to HTPB, and the viscosity build‐up data is too aligned with the DSC kinetic study. In addition, both catalysts increased the rate of the curing reaction but Fe(AA)3 displayed a superior catalytic effect.
Metabolism of 2,4‐D in plants: comparative analysis of metabolic detoxification pathways in tolerant crops and resistant weeds
Authors: Torra Joel , Alcántara‐de la Cruz Ricardo , de Figueiredo Marcelo Rodrigues Alves , Gaines Todd A. , Jugulam Mithila , Merotto Aldo , Palma‐Bautista Candelario , Rojano‐Delgado Antonia M. , Riechers Dean E. 
Published: August 2024

AbstractThe commercialization of 2,4‐D (2,4‐dichlorophenoxyacetic acid) latifolicide in 1945 marked the beginning of the selective herbicide market, with this active ingredient playing a pivotal role among commercial herbicides due to the natural tolerance of monocots compared with dicots. Due to its intricate mode of action, involving interactions within endogenous auxin signaling networks, 2,4‐D was initially considered a low‐risk herbicide to evolve weed resistance. However, the intensification of 2,4‐D use has contributed to the emergence of 2,4‐D‐resistant broadleaf weeds, challenging earlier beliefs. This review explores 2,4‐D tolerance in crops and evolved resistance in weeds, emphasizing an in‐depth understanding of 2,4‐D metabolic detoxification. Nine confirmed 2,4‐D‐resistant weed species, driven by rapid metabolism, highlight cytochrome P450 monooxygenases in Phase I and glycosyltransferases in Phase II as key enzymes. Resistance to 2,4‐D may also involve impaired translocation associated with mutations in auxin/indole‐3‐acetic acid (Aux/IAA) co‐receptor genes. Moreover, temperature variations affect 2,4‐D efficacy, with high temperatures increasing herbicide metabolism rates and reducing weed control, while drought stress did not affect 2,4‐D efficacy. Research on 2,4‐D resistance has primarily focused on non‐target‐site resistance (NTSR) mechanisms, including 2,4‐D metabolic detoxification, with limited exploration of the inheritance and genetic basis underlying these traits. Resistance to 2,4‐D in weeds is typically governed by a single gene, either dominant or incompletely dominant, raising questions about gain‐of‐function or loss‐of‐function mutations that confer resistance. Future research should unravel the physiological and molecular‐genetic basis of 2,4‐D NTSR, exploring potential cross‐resistance patterns and assessing fitness costs that may affect future evolution of auxin‐resistant weeds. © 2024 Society of Chemical Industry.
Solid‐State Quantum Emitters
Authors: Fox A. Mark 
Published: August 2024

AbstractThis perspective gives a tutorial overview of the development of solid‐state quantum emitters over the past three decades, focusing on the key parameters that are used to assess their performance for applications in quantum photonics. Specifically, it covers single‐photon purity and indistinguishability, source brightness, and on‐demand operation. The perspective includes a brief comparison of different material systems and concludes with a discussion of challenges that remain to be solved.
Proposed Scheme for a Cavity‐Based Quantum Battery
Authors: Hadipour Maryam , Haseli Soroush , Wang Dong , Haddadi Saeed 
Published: August 2024

AbstractA scheme for quantum batteries consisting of an atom‐cavity interacting system under a structured reservoir in the non‐Markovian regime is proposed. A multi‐parameter regime for the cavity‐reservoir coupling and reveal how these parameters affect the performance of the quantum battery is investigated. Specifically, how two distinct types of environments impact the charging process of the quantum battery from a memory perspective is examined. The findings indicate that in a memory‐influenced environment, both the stored energy and the extractable work are higher compared to when the cavity interacts with a memory‐less environment. This proposed scheme is simple and may be achievable for realization and implementation.
Superconducting Properties of Layered Chalocogenides 1T$1T$‐RhSeTe
Authors: Patra Chandan , Agarwal Tarushi , Arushi  , Manna Poulami , Bhatt Neeraj , Singh Ravi Shankar , Singh Ravi Prakash 
Published: August 2024

AbstractPlatinum‐group transition‐metal dichalcogenides have emerged as a subject of considerable interest in condensed matter physics because of their remarkable topological properties and unconventional superconducting behavior. In this study, the synthesis and superconducting characteristics of a layered chalcogenide RhSeTe crystallized in the 1‐structure, known for hosting materials with nontrivial topology characteristics are reported. RhSeTe exhibits type‐II superconductivity, with a superconducting transition temperature of 4.72 K and a high upper critical field 4.06(7) T.
Quantum Architecture Search with Neural Predictor Based on Graph Measures
Authors: He Zhimin , Li Zhengjiang , Deng Maijie , Zheng Shenggen , Situ Haozhen , Li Lvzhou 
Published: August 2024

AbstractQuantum architecture search (QAS) has attracted increasing attention owing to its remarkable ability to automate the design of quantum circuits for variational quantum algorithms (VQAs). However, evaluating the performance of numerous quantum circuits is essential to provide feedback for the search strategy, which inevitably renders QAS computationally expensive. Performance predictors have emerged as highly efficient evaluation methods to mitigate this challenge. However, the performance predictor faces a critical challenge in reducing the required number of circuit‐performance pairs for training. This study encodes circuit architecture by representing a quantum circuit as a relational graph that emphasizes message exchange. Subsequently, valuable information about circuit architecture is extracted through three types of graph measures, including distance‐based, degree‐based, and cluster‐based measures. The graph measures define a smooth space related to circuit performance, facilitating the training of the performance predictor. The effectiveness of the proposed method is assessed across three tasks within variational quantum eigensolvers (VQE): identifying the ground states of the Transverse Field Ising Model (TFIM), the Heisenberg model, and the molecule. The simulation results demonstrate notable enhancements in predictive accuracy achieved by our method, coupled with a substantial reduction in the required number of training samples for the predictor.
Diffuse large B‐cell lymphoma presenting with pulmonary artery compression symptoms, case reports
Authors: Habib Mhd Baraa , Ali Khaled , Fael Mohamad , Sabbagh Bana , Basrak Mohamad Talal , Alkhalaila Osama , Alshurafa Awni 
Published: August 2024

AbstractMediastinal diffuse large B‐cell lymphoma (DLBC) may manifest in different presentations including systemic symptoms and local mass symptoms. We report two cases of diffuse large B‐cell lymphoma presenting with pulmonary artery compression symptoms. The first case is of a 38‐year‐old Asian man which mimicked pulmonary embolism, and the second one is of a 27‐year‐old Asian woman who presented with fainting and respiratory symptoms due to local mass effect. Both cases were significantly improved after treatment. Local mass effect symptoms may be the first clinical presentation in DLBC lymphoma and should not be overlooked.
Active impedance control based adaptive locomotion for a bionic hexapod robot
Authors: Zhu Yaguang , Liu Chunchao , Yuan Pengfei , Li Dong 
Published: August 2024

AbstractIn recent years, with the continuous development of human exploration of the natural world, there has been a growing demand across various fields for robots capable of free movement in diverse environments. In this study, we address the issue of compliant control for a hexapod robot in diverse environments and propose a novel control method based on an adaptive impedance model for position control. Our approach enables the hexapod robot to stabilize foot force on complex terrains while preserving balance and body height. Specifically, we analyze the algorithm's parameters and stability by establishing the hexapod robot's structural and impedance control models. To tackle this challenge, we introduce an adaptive impedance control algorithm that estimates environmental parameters using Lyapunov's asymptotic stability theorem and achieves tracking of actual foot‐end forces to desired foot forces. Furthermore, to ensure body stability and height, we incorporate attitude feedback and body feedback. Experimental results from foot force control experiments conducted on a multilegged robot demonstrate that our proposed algorithm enhances the adaptability and robustness of the robot. This research holds significant implications for the stable control of hexapod robots in complex environments and has promising practical applications.
Sustainability in Agave tequilana weber farming: A life cycle assessment
Authors: Morales García Adrián Salvador , García‐Alcaraz Jorge Luis , Blanco Fernández Julio , Martínez Cámara Eduardo 
Published: August 2024

AbstractTequila is a popular alcoholic beverage made from Agave tequilana weber. This study presents a cradle‐to‐gate life cycle assessment (LCA) of the farming process of A. tequilana weber used in tequila production. Real data obtained from plantations at different stages of growth and maturation were used to evaluate the environmental impacts of the four stages of the farming process: land preparation and planting, nutrition, weed and pest control, and harvest and transport. Results showed that the production of one tonne of A. tequilana weber pineapple generates 11.85 kg CO2 eq, with the weed and pest control stages having the highest impact and the nutrition stage having the lowest impact. This study contributes significantly to the current understanding of the environmental impact of tequila production and provides insights into the sustainability of the farming process of A. tequilana weber.
The Clinical and Dermatoscopic Features of Penile Pigmentation in Men with Genital Lichen Sclerosus
Authors: James Mariel L. , Kravvas Georgios , Lallas Aimilios , Bunker Chris B. 
Published: August 2024

Abstract

Background
Benign male genital pigmentation is a confusing field with poorly defined terminology. This entity is frequently encountered in our male genital lichen sclerosus (MGLSc) cohort and suggests an association with prior inflammation, however there is a limited literature on the topic.

Objectives
This paper describes the attributes of 21 patients with MGLSc and features of benign genital pigmentation, reviews the existing literature on benign male genital pigmentation and makes recommendations for better practice.

Methods
We prospectively identified 21 patients with MGLSc and clinical diagnoses of benign penile pigmentation who attended specialist male genital dermatoses clinics. Relevant findings were abstracted from clinical notes, outpatient letters, medical photographs, dermatoscopic images and histological reports.

Results
The clinical features of this cohort are discussed and the dermatoscopic images analysed. 15 of 21 patients were followed up for over 2 years and all of these had stable appearance of pigmentation. 87% reported pigmentation to have emerged after the onset of MGLSc symptoms, with latency ranging from one to over 25 years. The terms lentiginosis, melanosis, and post-inflammatory hyperpigmentation are discussed in context of the existing literature.

Conclusions
We propose that genital lentiginosis and melanosis are clinically indistinguishable macroscopically and are on a clinical and histopathological spectrum. Although there is a compelling narrative that genital melanosis is most often truly benign, there is also emerging evidence to suggest an increased risk of penile melanoma in patients with MGLSc. Furthermore, pigmented lesions in MGLSc can portray concerning morphological features even when benign. A low threshold for biopsy and follow-up is thus warranted.
The contemporary context and complex challenges of preventing hazing
Authors: Biddix J. Patrick , Perlow Emily , Flavin Hailey , Simeon Akeya 
Published: August 2024

AbstractHazing is a longstanding tradition within student groups at American middle schools, high schools, and colleges. The pursuit of acceptance leads young adults to endure physical, mental, or emotional abuse through tolerated behaviors. In this article, we define hazing in the context of the secondary and college setting, exploring some of the reasons why hazing occurs and is tacitly permitted. We also discuss the challenges in preventing and eliminating hazing, providing recommendations for institutional leaders to consider when approaching hazing prevention.
Addressing hazing using a horizontal campus hazing model and matrix
Authors: Sasso Pietro A. , Joyce Brian , Veldkamp Stevan J. 
Published: August 2024

AbstractThe Piazza Center Horizontal Hazing Model conceptualizes the ways in which hazing transitions from pre‐college environments into higher education and across student constructed spaces such as student organizations or sorority and fraternity chapters. Hazing is multi‐tiered, occurring at individual, organizational, and community levels. This model helps practitioners better understand where to target interventions to disrupt hazing.
Analyzing hazing intervention and prevention responses through case studies
Authors: Veldkamp Stevan J. , Walker Jenny , Cangialosi William , Batey Benjamin 
Published: August 2024

AbstractHazing is a growing concern in US middle schools, high schools, and colleges. As more is understood about the complex phenomenon, so are strategies to prevent its occurrence and the cultures supporting it. This article reviews and critiques prevention strategies in four case studies set in high school, college, and student organization settings. A multi‐layered and multifaceted approach offers the most significant opportunity for impact when approaching hazing prevention.