bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of high operating temperatures and holding times on thermomechanical and mechanical properties of autoclaved epoxy/carbon composite laminates
Authors: Baghad Abd , El Mabrouk Khalil , Vaudreuil Sebastien , Nouneh Khalid 
Published: November 2021

AbstractThe elevated operating temperature is considered an essential factor affecting the performance of laminated composite structures. Under the intended conditions of use in aircraft engines and nacelles, carbon fiber reinforced polymers are exposed to temperatures ranging from room temperature to 120°C. The present work concentrates on the thermomechanical and mechanical properties of autoclaved woven carbon fiber/epoxy composite laminate subjected to different operating temperatures (60, 120, and 180°C) and holding times (10, 30, and 60 min). Thermomechanical results showed that the rigidity and stiffness of the epoxy resin matrix decrease with increasing temperature. However, all mechanical properties (laminate compressive modulus, laminate compressive strength, and interlaminar shear strength) decreased progressively with operating temperature. Laminate compressive strength and interlaminar shear strength were seen to decline up to 43.74% and 30.60% on the operating temperature of 180°C, respectively, compared to measured values at 60°C. This study indicates that only the compression properties were affected by the holding time, while the interaction between the operating temperature and holding time affects the laminate compressive modulus.
Quantitative proteomic analyses reveal the dynamics of protein and amino acid accumulation during soybean seed development
Authors: Islam Nazrul , Krishnan Hari B. , Natarajan Savithiry 
Published: November 2021

AbstractUsing high throughput tandem mass tag (TMT) based tagging technique, we identified 4172 proteins in three developmental stages: early, mid, and late seed filling. We mapped the identified proteins to metabolic pathways associated with seed filling. The elevated abundance of several kinases was observed from the early to mid‐stages of seed filling, indicating that protein phosphorylation was a significant event during this period. The early to late seed filling stages were characterized by an increased abundance of proteins associated with the cell wall, oil, and vacuolar‐related processes. Among the seed storage proteins, 7S (β‐subunit) and 11S (Gy3, Gy4, Gy5) steadily increased in abundance during early to late stages of seed filling, whereas 2S albumin exhibited a decrease in abundance during the same period. An increased abundance of proteases, senescence‐associated proteins, and oil synthesis proteins was observed from the mid to late seed filling stages. The mid to late stages of seed filling was also characterized by a lower abundance of transferases, transporters, Kunitz family trypsin, and protease inhibitors. Two enzymes associated with methionine synthesis exhibited lower abundance from early to late stages. This study unveiled several essential enzymes/proteins related to amino acid and protein synthesis and their accumulation during seed development. All data can be accessed through this link: https://massive.ucsd.edu/ProteoSAFe/dataset.jsp?task=38784ecbd0854bb3801afc0d89056f84. (Accession MSV000087577)
α‐photolabile amine semitelechelic polymers for light‐induced macromolecular conjugation
Authors: He Lirong , Zhao Hui , Theato Patrick 
Published: November 2021

AbstractThe use of UV irradiation as a reaction stimulus provides a facile mean to obtain spatial and temporal control over polymer conjugation reactions. In this work, UV irradiation was used to induce an activated ester‐amine conjugation of polymeric building blocks via photo‐induced deprotection of an amine and subsequent reaction with an activated ester, resembling the first example of macromolecular conjugation using light‐triggered activated ester‐amine chemistry.
Acculturation discrepancy and mental health associations among Hispanic childhood cancer survivors and their parents
Authors: Slaughter Rhona I. , Hamilton Ann S. , Cederbaum Julie A. , Unger Jennifer B. , Baezconde‐Garbanati Lourdes , Milam Joel E. 
Published: November 2021

AbstractObjectiveAcculturation discrepancy occurs when the rate of host culture acquisition and/or heritage culture retention between non‐native parents and their children diverges. The resulting conflict may exacerbate mental health conditions in already vulnerable populations. The present study examined discrepancies between Hispanic and Anglo‐American acculturation, as two separate constructs, and mental health symptomology in Hispanic childhood cancer survivors (HCCS) and their parents.MethodsParticipants were 68 matched parent‐child dyads (HCCS (Mage = 19.4 (2.77) years., 50.0% female); and parent (Mage = 46.3 (6.07) years., 89.7% female)). Study variables were HCCS posttraumatic‐growth (PTG) and quality‐of‐life (PedsQL); parent posttraumatic stress (PTSD); and parent/HCCS depressive symptoms (CESD) and acculturation orientations. Discrepancy was calculated as the dyadic difference between like acculturation measures.ResultsAfter controlling for covariates, Hispanic acculturation discrepancy and HCCS psychosocial health (a subset of PedsQL) was negatively correlated (r = −0.26, p < 0.5); while Anglo‐American acculturation discrepancy was positively associated with HCCS PTG (r = 0.34, p < 0.01) and overall PedsQL (r = 0.24, p < 0.05), and moderated the relationship between parent CESD and HCCS PedsQL.ConclusionThe findings suggest that the two acculturation discrepancy constructs have opposite effects. HCCS losing their heritage culture while their parents simultaneously retain it appears to be a deleterious process; whereas, HCCS learning the US culture more rapidly than parents may have protective benefits. This study has important implications for mental health interventions among HCCS. Findings should be used to inform the survivorship clinical community of the value of acculturation timing and parent/child discrepancy.
Screening of diesters of ortho‐phthalic acid in printed baby bibs in the European market
Authors: Perico Gabriel , Pereira Joel , Selbourne Maria do Céu , Limbo Sara , Poças Fátima 
Published: November 2021

AbstractA screening exercise targeting ortho‐phthalates in 22 plastic baby bibs collected in the European market was performed. A GC–MS method was used with a limit of detection ranging from 0.1 to 0.6 mg kg−1 bib. The most frequently detected phthalates were di‐n‐butyl phthalate (DBP) and diisobutyl phthalate (DIBP) in nearly all samples. DIBP was detected at concentrations suggesting its intended use. Overall, the highest levels were detected for benzyl butyl phthalate (BBP), with six samples presenting concentration from 13 to 47 mg kg−1 and one sample with the highest value of 65 mg kg−1. Results indicate that several non‐authorised phthalates are intentionally used either in the plastic or in the printing inks. Worst case migration calculations indicate that diethyl phthalate (DEP), DAP and DIBP exceed the limit of 0.01 mg kg−1. Therefore, determination of experimental migration is needed to conclude on compliance of baby bibs with the European and Swiss legislation. Bibs are articles that fall in the scope of the definition of FCMs accordingly to European legislation. Therefore, they should comply with the applicable rules, restrictions and limits. These articles should be included in surveillance plans, focusing on monitoring bib composition, migration and the application of good manufacturing practices by industry.
Robust output regulation for unknown nonlinear strict‐feedback systems with input delay
Authors: Jin Peng , Ma Qian 
Published: November 2021

AbstractThis article investigates the robust output regulation problem for unknown nonlinear strict‐feedback systems with input delay. Nonlinear fuzzy internal model and adaptive fuzzy backstepping control are integrated to obtain a feedforward‐feedback composite controller. As a distinctive feature, Pade approximation technique is introduced to deal with the input delay of nonlinear output regulation problem for the first time. The process of control strategy can be divided into two steps. In the first step, a novel nonlinear fuzzy internal model is designed to get the feedforward compensator. In the second step, an adaptive fuzzy backstepping control scheme is proposed to get the feedback controller, which can guarantee semiglobally uniformly ultimately bounded of the closed‐loop system. Simulation results of an interconnected power system show the validity of the theoretical results.
Distributed robust fault‐tolerant consensus tracking control for multi‐agent systems with exogenous disturbances under switching topologies
Authors: Sader Malika , Liu Zhongxin , Wang Fuyong , Chen Zengqiang 
Published: November 2021

AbstractIn this article, the consensus tracking problem for multi‐agent systems (MASs) under switching communication topologies is studied. In the objective system, the unknown nonlinear function, exogenous disturbances, and actuator faults are considered. For this problem, a new fully distributed fault‐tolerant control method is developed via utilizing adaptive mechanisms. A sufficient condition is obtained to guarantee the stability of the considered closed‐loop system by topology‐based average dwell time technique combined with Lyapunov stability theory. Unlike the traditional method to estimate the weight matrix, the neural network is used to estimate the norm of weight vectors. Thus, the difficulty that the unknown nonlinear function cannot be compensated when outage or stuck faults occur in some actuators is solved. Compared with the existing controllers for nonlinear MASs, the proposed controller does not require any knowledge about the terms relevant to the global information associated with the network. Furthermore, the proposed controller can compensate for the leader's unknown bounded input and actuator faults. Besides, the closed‐loop system is proven to be stable by the developed controller, and all followers can track the state of the leader. Finally, a numerical simulation is given to validate the effectiveness of the proposed protocol.
PID passivity‐based droop control of power converters: Large‐signal stability, robustness and performance
Authors: Zonetti Daniele , Bergna‐Diaz Gilbert , Ortega Romeo , Monshizadeh Nima 
Published: November 2021

AbstractWe present a full review of PID passivity‐based controllers (PBC) applied to power electronic converters, discussing limitations, unprecedented merits and potential improvements in terms of large‐signal stability, robustness and performance. We provide four main contributions. The nominal case is first considered and it is shown—under the assumption of perfect knowledge of the system parameters—that the PID‐PBC is able to guarantee global exponential stability of a desired operating point for any positive gains. Second, we analyze robustness of the controller to parameters uncertainty for a specific class of power converters, by establishing precise stability margins. Third, we propose a modification of the controller by introducing a leakage, in order to overcome some of the intrinsic performance and robustness limitations. Interestingly, such controller can be interpreted at steady‐state as a droop between the input and the passive output, similar to traditional primary controllers. Fourth, we robustify the design against saturation of the control input via an appropriate monotone transformation of the controller. The obtained results are thoroughly discussed and validated by simulations on two relevant power applications: a DC/DC boost converter and an HVDC grid‐connected voltage source converter.
Blending Donors with Different Molecular Weights: An Efficient Strategy to Resolve the Conflict between Coherence Length and Intermixed Phase in Polymer/Nonfullerene Solar Cells
Authors: Liang Qiuju , Hu Zhangbo , Yao Jianhong , Wu Zihao , Ding Zicheng , Zhao Kui , Jiao Xuechen , Liu Jiangang , Huang Wei 
Published: November 2021

AbstractLong coherence lengths (CLs) of crystals and proper intermixed phase amount guarantee charge transport and exciton dissociate efficiently, which is crucial for organic solar cells (OSCs) to achieve high device performance. However, extending CLs usually reduces the intermixed phase, leading to an insufficient interface for exciton dissociation. Herein, a strategy using a binary polymer with different molecular weights as donor is employed, that is, poly(3‐hexylthiophene‐2,5‐diyl) (P3HT) with high (P3HT‐H) and low (P3HT‐L) molecular weight are blended as donor, and (5Z,5′Z)‐5,5′‐(((4,4,9,9‐tetraoctyl‐4,9‐dihydro‐s‐indaceno[1,2‐b:5,6‐b′]dithiophene‐2,7‐diyl)bis(benzo[c][1,2,5]thiadiazole‐7,4‐diyl))bis(methanylylidene))bis(3‐ethyl‐2‐thioxothiazolidin‐4‐one) (O‐IDTBR) is used as acceptor. In kinetics, the entanglements of P3HT‐H are relieved due to the higher molecular diffusivity of P3HT‐L. In thermodynamics, the miscibility of P3HT‐L/O‐IDTBR, P3HT‐H/O‐IDTBR, and P3HT‐L/P3HT‐H blends increases in turn. Hence, P3HT forms a more ordered structure with longer CLs after adding P3HT‐L, which also drives O‐IDTBR dispersed in P3HT crystalline regions diffuse to the O‐IDTBR crystalline regions to further self‐organize. Consequently, the CLs of both P3HT and O‐IDTBR are extended, while keeping the intermixed phase amount proper. The optimized microstructure boosts device performance from 7.03% to 7.80%, which is one of the highest values reported for P3HT/O‐IDTBR blends. This is a novel way to solve the conflict mentioned above, which may provide guidance to finely regulating the morphology of the active layer.
A New Hybrid Lead‐Free Metal Halide Piezoelectric for Energy Harvesting and Human Motion Sensing
Authors: Guo Tian‐Meng , Gong Yong‐Ji , Li Zhi‐Gang , Liu Yi‐Ming , Li Wei , Li Zhao‐Yang , Bu Xian‐He 
Published: November 2021

AbstractHybrid organic–inorganic piezoelectrics have attracted attention due to their simple synthesis, mechanical flexibility, and designability, which have promising application potential in flexible sensing and self‐powered energy harvesting devices. Although some hybrid piezoelectrics are discovered, most of their structures are limited by the perovskite‐type and often contain lead. Herein, the synthesis, structure, and piezoelectric properties of a new hybrid lead‐free metal halide, (BTMA)2CoBr4 (BTMA = benzyltrimethylammonium) are reported. The experimental and theoretical results demonstrate that this material simply composed of [CoBr4]2− tetrahedra and BTMA+ cations exhibits significant piezoelectricity (d22 = 5.14, d25 = 12.40 pC N−1), low Young's and shear moduli (4.11–17.56 GPa; 1.86–7.91 GPa). Moreover, the (BTMA)2CoBr4/PDMS (PDMS = polydimethylsiloxane) composite thin films are fabricated and optimized. The 10% (BTMA)2CoBr4/PDMS‐based flexible devices show attractive performance in energy harvesting with an open‐circuit voltage of 19.70 V, short‐circuit current of 4.24 µA, and powder density of 11.72 µW cm−2, catching up with those of piezoelectric ceramic composites. Meanwhile, these film devices show excellent capability in accurately sensing human body motions, such as finger bending and tapping. This work demonstrates that (BTMA)2CoBr4 and related piezoelectric lead‐free halides can be promising molecular materials in modern energy and sensing applications.
2D Indium Phosphorus Sulfide (In2P3S9): An Emerging van der Waals High‐k Dielectrics
Authors: Zhu Cheng‐Yi , Qin Jing‐Kai , Huang Pei‐Yu , Sun Hai‐Lin , Sun Nie‐Feng , Shi Yan‐Lei , Zhen Liang , Xu Cheng‐Yan 
Published: November 2021

Abstract2D van der Waals (vdW) semiconductors hold great potentials for more‐than‐Moore field‐effect transistors (FETs), and the efficient utilization of their theoretical performance requires compatible high‐k dielectrics to guarantee the high gate coupling efficiency. The deposition of traditional high‐k dielectric oxide films on 2D materials usually generates interface concerns, thereby causing the carrier scattering and degeneration of device performance. Here, utilizing a space‐confined epitaxy growth approach, the authors successfully obtained air‐stable ultrathin indium phosphorus sulfide (In2P3S9) nanosheets, the thickness of which can be scaled down to monolayer limit (≈0.69 nm) due to its layered structure. 2D In2P3S9 exhibits excellent insulating properties, with a high dielectric constant (≈24) and large breakdown voltage (≈8.1 MV cm−1) at room temperature. Serving as gate insulator, ultrathin In2P3S9 nanosheet can be integrated into MoS2 FETs with high‐quality dielectric/semiconductor interface, thus providing a competitive electrical performance of device with subthreshold swings (SS) down to 88 mV dec−1 and a high ON/OFF ratio of 105. This study proves an important strategy to prepare 2D vdW high‐k dielectrics, and greatly facilitates the ongoing research of 2D materials for functional electronics.
Grafting Hypercrosslinked Polymers on TiO2 Surface for Anchoring Ultrafine Pd Nanoparticles: Dramatically Enhanced Efficiency and Selectivity toward Photocatalytic Reduction of CO2 to CH4
Authors: Zhan Zhen , Wang Heng , Huang Qi , Li Shuqing , Yi Xiaoxuan , Tang Qian , Wang Jingyu , Tan Bien 
Published: November 2021

AbstractMetal deposition with photocatalyst is a promising way to surmount the restriction of fast e−/h+ recombination to improve the photocatalytic performance. However, the improvement remains limited by the existing strategies adopted for depositing metal particles due to the serious aggregation and large unconnected area on photocatalyst surface. Here, a strategy is proposed by directly grafting hypercrosslinked polymers (HCPs) on TiO2 surface to construct Pd‐HCPs‐TiO2 composite with uniform dispersion of ultrafine Pd nanoparticles on HCPs surface. This composite with surface area of 373 m2 g−1 exhibits improved photocatalytic CO2 conversion efficiency to CH4 with an evolution rate of 237.4 µmol g−1 h−1 and selectivity of more than 99.9%. The enhancement can be ascribed to the grafted porous HCPs with high surface area and N heteroatom on TiO2 surface for the stabilization of Pd nanoparticles, favoring the electron transfer and CO2 adsorption for selective CH4 production. This strategy may hold the promise for design and construction of porous organic polymer with semiconductor for efficient photocatalytic conversion.
Ultrafast Universal Fabrication of Metal‐Organic Complex Nanosheets by Joule Heating Engineering
Authors: Xu Feng , Zhou Yanping , Zhai Xingwu , Zhang Hongjian , Liu Haodong , Ang Edison Huixiang , Lu Yufei , Nie Zhentao , Zhou Min , Zhu Jixin 
Published: November 2021

AbstractTwo‐dimensional metal‐organic complex (MOC) nanosheets are of great interest in various areas. Current strategies applied to synthesize MOC nanosheets are suffering from low yield, usage of large amounts of environmentally unfriendly organic solvent, are time and energy consuming, and cumbersome steps for 2D nanostructures. In this work, a novel joule heating mechanism is proposed to fabricate MOC nanosheets about 5 nm in thickness with tunable metal compositions (i.e. M = Co, CoNi, and CoFe) within 60 s. Small amount of water is used as the only solvent. Under the intense irradiation of the microwave, fast heating via ionic conduction loss is realized, and urea is catalytically condensed into the long‐chain organic ligands rich in N atoms that are capable of coordinating with metal ions to form the stubborn MOC framework, which is simultaneously puffed into an ultrathin nanosheet structure by the intensive release of gas. As a proof of concept, the as‐synthesized Co‐MOC nanosheet exhibits a superior lithium storage performance of 360 and 330 mA h g–1 after 1200 and 2300 cycles at a current density of 500 and 1000 mA g–1, respectively.
Conceptualizing the systemic evaluation of dashboards in quality enhancement processes in higher education
Authors: Hart Diane 
Published: November 2021

AbstractThe article highlights the need for improvement in the evaluation of dashboard implementations intended to support quality processes in higher education and proposes a systems thinking framework for this improvement. A review of the literature on quality enhancement processes in higher education and dashboards research highlights that quality enhancement in higher education might be more appropriately understood through the lens of complexity management. The Viable Systems Model is argued to be useful for this purpose and, in terms of the role of dashboards in supporting these processes, encourages focus on their role in supporting communication and information flow for effective decision‐making for adaptation. Some initial systems modelling is conducted to illustrate how the application of the model could guide evaluation, providing the foundation for case study evaluation and research.
MiR-184 directly targets Wnt3 in cardiac mesoderm differentiation of embryonic stem cells
Authors: Liu Xiaoqin , Yang Yiwei , Wang Xing , Guo Xudong , Lu Chenqi , Kang Jiuhong , Wang Guiying 
Published: November 2021

Abstract
Embryonic stem (ES) cells have the property of self-renewal and multi-directional differentiation, and provide an ideal model for studying early embryo development in vitro. Wnt3, as Wnt family member 3, plays a vital role during ES cell differentiation. However, the exact regulatory mechanism of Wnt3 remains to be elucidated. MicroRNAs can directly regulate gene expression at the post-transcriptional level and play critical function in cell fate determination. Here, we found the expression level of miR-184 decreased when ES cells differentiated into cardiac mesoderm then increased during the process as differentiated into cardiomyocytes, which negatively correlated with the expression of Wnt3. Overexpression of miR-184 during the process of ES cell differentiation into cardiac mesoderm repressed cardiac mesoderm differentiation and cardiomyocyte formation. Bioinformatics prediction and mechanism studies showed that miR-184 directly bound to the 3′UTR region of Wnt3 and inhibited the expression level of Wnt3. Consistently, knockdown of Wnt3 mimicked the effects of miR-184-overexpression on ES cell differentiation into cardiac mesoderm, whereas overexpression of Wnt3 rescued the inhibition effects of miR-184 overexpression on ES cell differentiation. These findings demonstrated that miR-184 is a direct regulator of Wnt3 during the differentiation process of ES cells, further enriched the epigenetic regulatory network of ES cell differentiation into cardiac mesoderm and cardiomyocytes.
In Lyl1
−/− mice, adipose stem cell vascular niche impairment leads to premature development of fat tissues
Authors: Hussain Abid , Deleuze Virginie , El Kebriti Leila , Turali Hulya , Pirot Nelly , Glasson Yaël , Mathieu Danièle , Pinet Valérie 
Published: November 2021

Abstract
Lyl1 encodes a hematopoietic- and endothelial-specific bHLH transcription factor. Lyl1-deficient mice are viable, but they display mild hematopoietic and vascular defects. Specifically, LYL1 is required for the maturation and stabilization of blood vessel endothelial adherens junctions. Here, we report that young adult Lyl1−/− mice exhibit transient overweight associated with general expansion of adipose tissue, without signs of metabolic disorder and unrelated to food intake. The increased fat tissue development in Lyl1−/− mice resulted from earlier differentiation of adipose stem cells (ASCs) into adipocytes through noncell autonomous mechanisms. Specifically, we found that in Lyl1−/− mice, the adipose tissue vascular structures are immature, as indicated by their high permeability, reduced coverage by pericytes, lower recruitment of VE-cadherin and ZO1 at cell junctions, and more prone to angiogenesis. Together, our data show that in Lyl1−/− mice, the impaired vascular compartment of the adipose niche promotes ASC differentiation, leading to early adipocyte expansion and premature ASC depletion. Our study highlights the major structural role of the adipose tissue vascular niche in coordinating stem cell self-renewal and differentiation into adipocytes.