bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimization workflow to parameterize elastomer material models based on arbitrary time‐domain measurement data
Authors: Rapp Tobias , Jacobs Georg , Berroth Joerg , Bauermeister Ralf , Wischmann Stefan 
Published: April 2023

AbstractPredicting the behavior of elastomer components always requires experimental characterization of their nonlinear mechanical properties. This involves measuring the ratio of stresses and strains and the dissipated energy per load cycle in harmonic deformations of test specimens. Characteristic values, such as the elastomer's stiffness and damping, and their dependence on amplitude and frequency are then calculated and used to identify material model parameters. However, determining these characteristic values imposes significant requirements on test setup and control, as they are only meaningful when calculated from ideally sinusoidal and steady‐state load sequences. This can result in unnecessary methodological errors for any real‐world measurement. This contribution presents a method for identifying material model parameters that omits determining characteristic values, greatly reducing testing times and prediction errors. The method involves an optimization‐based variation of model parameters to directly match the stress response of a material model with measured stresses. Its independence from ideal test sequences is shown by applying the method to numerically generated measurement data with artificial control errors. Application to real measurement data reveals a possible reduction of testing times from about 2 h to below 35 s while preserving the model's accuracy.
The simple synthesis of all‐organic polymer bilayer films: Achieving simultaneous enhancements in energy storage density and efficiency
Authors: Liu Shiyu , Zhang Wenchao , Guan Feng , Yao Yuanhang , Yue Dong , Feng Yu 
Published: April 2023

AbstractAll‐organic dielectric polymers with excellent capacitive energy storage capabilities have great potential applications in the fields of modern electronics and power systems. However, it is still challenging to achieve simultaneous improvements in both energy density and efficiency in these all‐organic dielectric polymers. This work proposes the all‐organic bilayer composite films with ferroelectric polymer poly(vinylidene fluoride‐hexafluoropropylene) (P(VDF‐HFP)) and linear polymer fluorene polyester (FPE) as the energy storage dielectrics for film capacitors. Compared with pure FPE films, the bilayer composite films exhibit improved dielectric constant. What is more outstanding is that the bilayer composite films has higher energy storage density and energy storage efficiency under the same electric field compared with the pure P(VDF‐HFP) film. Particularly, an outstanding Ud of 7.00 J/cm3 accompanied with great η of 95.9% has been delivered in the resulting bilayer composite films via optimizing the P(VDF‐HFP) content (22.2 vol%) at 520 kV/mm. The compatibility of the two polymers was discussed by simulating the potential distribution of the two polymer molecular chains. This work opens up a new way to prepare compatible polymer flexible capacitor films on a large scale.
Improving the tribological performance of polyphenylene sulfide by incorporating irradiation treated polytetrafluoroethylene powders
Authors: Li Jixiang , Mei Junqi , Peng Xionghou , Zou Huawei , Zhou Shengtai 
Published: April 2023

AbstractIn this work, the efficacy of using irradiation treated polytetrafluoroethylene (i.e., i‐PTFE) powders on the tribological properties of polyphenylene sulfide (PPS)‐based composites was systematically investigated. The results showed that the addition of i‐PTFE powders significantly improved the friction and wear properties of PPS. The average friction coefficient and specific wear rate of PPS/i‐PTFE 20 wt% composite reached 0.129 and 1.75 × 10−5 mm3 N−1 m−1, which were 77.4% and 99.5% lower than those of pure PPS, respectively. SEM observations indicated that the i‐PTFE powders exhibited a relatively uniform distribution within PPS, which favored the formation of intact, uniform and continuous transfer film on the surface of friction pair, thereby resulting in a significant improvement of tribological properties for PPS/i‐PTFE composites. The worn surface of the testing specimen turned smoother and the wear debris became smaller with increasing addition of i‐PTFE powders, which was related to the improvement of tribological performance by forming transfer film at the sliding interface. This work provided a strategy to fabricate high performance self‐lubricating polymer composites that demonstrate potential applications in engineering sectors.
Functional Molecular Granular Materials: Advances and Perspectives
Authors: Liu‐Fu Wei , Zhou Xin , Chen Jiadong , Yin Jia‐Fu , Yang Junsheng , Yin Panchao 
Published: April 2023

AbstractMolecular granular materials (MGMs) are constructed with sub‐nanoscale molecular clusters (MCs) as the building units and they have recently been observed to possess enriched functionalities distinct from granular materials of colloid nanoparticles. Herein, the birth and recent research advances in MGMs are summarized with the topics covering the precise synthesis of MC assemblies with target topologies, the hierarchical relaxation dynamics and tuneable viscoelasticity, impact‐resistant capacity, and proton conductivity performance. The extremely small size of MC renders them two features: bulk diffusive dynamics with energy scale close to thermal fluctuation energy and the dominant volume fraction of surface structures. This finally leads to the hierarchical relaxation dynamics and broadly tuneable viscoelasticity of MGMs although the structural units are with small sizes and low Mw. Therefore, MGMs have been applied as impact resistant materials and proton conductors for the highly tuneable relaxation dynamics.
Metal‐Organic Frameworks (MOFs) and Their Derivatives for Electrocatalytic Carbon Dioxide (CO2) Reduction to Value‐added Chemicals: Recent Advances and New Challenges
Authors: Qu Guangfei , Wei Kunling , Pan Keheng , Zhou Junhong 
Published: April 2023

AbstractExcess CO2 can be effectively converted into valuable fuels and chemicals by electrochemical CO2 reduction, which can help establish a low‐carbon emission economy and solve the current energy crisis. In recent years, metal‐organic frameworks (MOFs), as an emerging multifunctional material with porous structure, high chemical tunability and large specific surface area, has received increasing attention in the field of electrochemical CO2RR. In this paper, we present a comprehensive overview of various MOFs and their derivatives as CO2RR electrocatalysts and analyze their roles in the catalytic process from physical and chemical aspects. In addition, combining experiments and theory, this article also offers a personal view on the electronic structure modulation strategies to improve electrocatalytic performance. The article concludes with an analysis of the challenges in realizing MOFs and their derivatives for electrocatalytic CO2RR applications.
Tailoring Electrolyte Distributions to Enable High‐performance Li3PS4‐based All‐solid‐state Batteries under Different Operating Temperatures
Authors: Wei Chaochao , Yu Dian , Xu Xiangling , Wang Ru , Li Jiayang , Lin Jinyan , Chen Shaoqing , Zhang Long , Yu Chuang 
Published: April 2023

AbstractLi3PS4 shows great potential as solid electrolyte for all‐solid‐state lithium batteries (ASSLBs) due to its high Li‐ion conductivity and excellent mechanical properties. However, its poor interfacial stability with bare high‐nickel active materials in the cathode mixture inhibits the energy density and electrochemical performances of the corresponding LiNi0.6Mn0.2Co0.2O2/Li3PS4/Li−In battery. The Li3InCl6 electrolyte with good electrochemical/chemical stability with bare LiNi0.6Mn0.2Co0.2O2(NCM622), which acts both as a Li‐ion additive in the cathode mixture and as an isolation layer to isolate the direct contact between the sulfide electrolytes and active materials, providing superior solid/solid interface stabilities in the assembled battery. XPS and TEM results confirm that this strategy can mitigate the side reactions between the bare NCM622 and Li3PS4 electrolytes. In‐situ EIS and DRT results prove that this grading utilization of different solid electrolytes can greatly alleviate the poor electrochemical stability between those two materials, yielding smaller interfacial resistances. The corresponding battery delivers high discharge capacities at various C‐rates under different operating temperatures. It delivers a much higher initial discharge capacity of 187.7 mAh g−1 (vs. 92.5 mAh g−1) at 0.1 C with a coulombic efficiency of 87.6% (vs. 71.1%) at room temperature. Moreover, this battery can even show highly reversible capacity with excellent cyclability when the operating temperature lowers to 0 and −20 °C. This work provides a hierarchical utilization strategy to fabricate sulfide electrolytes‐based ASSLBs with high energy density and superior cycling performance combined with highly‐oxidation cathode materials.
The Italian quick survey on the effects of the COVID‐19 health emergency on businesses: Sampling strategy and data editing
Authors: Casciano M. C. , Varriale R. 
Published: April 2023

AbstractDuring the first phase of the COVID‐19 pandemic, Istat performed the quick survey “Situation and perspectives of Italian enterprises during the COVID‐19 health emergency,” with the aim of assessing the economic situation and the specific actions adopted by businesses to reduce the economic impacts of the emergency. To ensure the continuity in the information flow and to analyze the temporal evolution of the observed phenomena, the survey has been repeated in three different waves. The outcomes of each wave was released just after 2 months from the launch of the survey. The present work analyses the characteristics of the sampling strategy and describes the complexity of the data editing process, in the case of a survey planned to produce estimates able to ensure an acceptable level of accuracy in the maximum timeliness.
Super‐stiff guidewire or loach guidewire during percutaneous nephrolithotomy?
Authors: Ding Xiaobo , Hou Yuchuan , Wang Chunxi , Wang Yanbo 
Published: April 2023

AbstractObjectivesThe objectives of this work are to compare the outcomes between loach guidewire and super‐stiff guidewire during percutaneous nephrolithotomy (PCNL) and find potential indications of different guidewires.Patients and methodsWe retrospectively reviewed our institutional PCNL database from 2017 to 2021. Patients who underwent PCNL guided by loach guidewire were assigned to group A (489 patients); patients who received super‐stiff guidewire were assigned to group B (269 patients). Preoperative demographic data, intraoperative parameters, and postoperative complications were compared. The conditions and reasons of failed placement of guidewire needed readjustment were evaluated as well.ResultsPreoperative demographic data and most intraoperative parameters were not statistically different between the groups. Postoperative Clavien–Dindo complications were also comparable, with low rate of complications. However, failed placement of guidewire more occurred in group A (8.2% vs. 4.0%, respectively, p = 0.03). Compared with the super‐stiff guidewire, the loach guidewire was easier pass/slip into any place either it be perinephric or blood vessels. In most failed group A cases and all failed group B cases, the guidewire was placed in the perirenal fat. Six patients (15%) in group A, the guidewires entered into vessels.ConclusionsOur results support that the faulty placement of loach guidewire is significantly more common compared with super‐stiff guidewire. Double confirmation is needed to prevent a major complication out of wrong dilatation whenever there is doubt about the wrong location of the guidewire.
A cross‐cultural study on online reviews and decision making: An eye‐tracking approach
Authors: Moriuchi Emi , Moriyoshi Naoko 
Published: April 2023

AbstractEvery information on an online review has a different impact on individual's decision‐making process. This difference is attributed to the individual's attribution of responsibility, which influences their cognition. In this study, a survey and eye‐tracker were used to conduct a study on restaurant reviews between two groups of participants (U.S. and Japan). Result suggests that the presentation of food in an image has a stronger impact on the Japanese respondents than it is for Americans. Between the two groups of participants, Americans focused more on the positive ratings, whereas Japanese focus on the extreme end of the ratings (1‐star vs. 5‐star). The distribution of the star ratings, which forms a particular letter shape (e.g., E) also has an impact on respondents' decision‐making process. Results show that Americans fixate on the shape of the distribution 7–8 times longer than the Japanese respondents. The result in this study suggests that the cultural cognition and attribution of responsibility, which is reflected in respondents' cultural dimensions (e.g., monumentalism vs. flexhumility), need to be considered. These considerations will affect how a company presents their information on a review site so that the content resonates and aids in their consumers' decision‐making process.
Are Two Riboses Better Than One? The Case of the Recognition and Activation of Adenosine Receptors
Authors: Gianferrara Teresa , Pavan Matteo , Bassani Davide , Vincenzi Fabrizio , Pasquini Silvia , Bolcato Giovanni , Varani Katia , Spalluto Giampiero , Federico Stephanie , Moro Stefano 
Published: April 2023

AbstractTraditionally, molecular recognition between the orthosteric site of adenosine receptors and their endogenous ligand occurs with a 1 : 1 stoichiometry. Inspired by previous mechanistic insights derived from supervised molecular dynamics (SuMD) simulations, which suggested an alternative 2 : 1 binding stoichiometry, we synthesized BRA1, a bis‐ribosyl adenosine derivative, tested its ability to bind to and activate members of the adenosine receptor family, and rationalized its activity through molecular modeling.
Trait and symptom change in group cognitive behaviour therapy for anxiety and depression
Authors: Niemeijer Miriam , Reinholt Nina , Poulsen Stig , Bach Bo , Christensen Anne Bryde , Eskildsen Anita , Hvenegaard Morten , Arendt Mikkel , Arnfred Sidse 
Published: April 2023

AbstractPersonality traits underlying both anxiety disorders and depression are more malleable than previously presumed. This study examined associations between changes in personality traits (i.e. negative affectivity and detachment) and alleviation of anxiety and depression symptoms following cognitive behaviour therapy (CBT). We hypothesized that decreases in negative affectivity would predict alleviation of depression and anxiety symptoms and decreases in detachment would predict decreases in depression and, to a lesser degree, anxiety symptoms. Data (N = 156) were collected in a randomized controlled trial comparing transdiagnostic and diagnosis‐specific group CBT for patients with major depressive disorder, social anxiety disorder, panic disorder or agoraphobia. We assessed personality traits using the Personality Inventory for DSM‐5 (PID‐5) and symptoms with the Hopkins Symptom Checklist 25‐item scale (SCL). Prediction was based on regression analyses. We found that decreases in negative affectivity predicted lower levels of depression and anxiety symptoms while decreases in detachment only predicted lower levels of depression symptoms. The findings substantiate current efforts to explicate the dynamic interplay between personality traits and symptoms and support the existing focus on targeting negative affectivity and detachment in therapy for anxiety disorders and depression.The trial is registered at clinicaltrials.gov (ID NCT02954731).
Twisted Intramolecular Charge Transfer‐Based Fluorometric Detection of D‐fructose by Boronic Acid‐Containing BF2‐β‐Diketonate Complexes
Authors: Saito Hitomi , Sobue Yukika , Sugaya Tomoaki , Iwatsuki Satoshi , Inamo Masahiko , Ishihara Koji 
Published: April 2023

AbstractNovel BF2‐β‐diketonate complexes 1–4 bearing phenylboronic acid moieties and methoxyphenyl or dimethylaminophenyl groups were synthesized and their photophysical properties, pH response, and reactivity to D‐fructose were evaluated. Complexes 1 and 2 bearing a methoxyphenyl group luminesced with high intensity in a range of non‐polar to polar solvents, except in DMSO, whereas complexes 3 and 4 containing a dimethylaminophenyl group with twisted intramolecular charge transfer (TICT) properties showed a dramatic decrease in luminescence intensity with increasing solvent polarity. The luminescence intensity of complexes 1 and 2 decreased with increasing pH due to intermolecular vibration which associated with hydrogen bonding between the complexes and solvent water molecules, whereas it increased when they reacted with D‐fructose due to the suppression of the intermolecular vibration. In contrast, the luminescence intensity of complexes 3 and 4 increased with increasing pH and upon reaction with D‐fructose due to the loss of its TICT properties. The photophysical properties of complexes 1–4 and the TICT properties of complexes 3 and 4 were supported by density functional theory calculations.
Mizoroki‐Heck Macrocyclization Reactions at 1 M Concentration Catalyzed by Sub‐nanometric Palladium Clusters
Authors: Garnes‐Portolés Francisco , Merino Estíbaliz , Leyva‐Pérez Antonio 
Published: April 2023

AbstractThe synthesis of cyclized organic compounds with more than ten atoms (macrocycles) is traditionally based on reversible reactions under highly diluted conditions, typically <0.05 M, in order to circumvent the formation of intermolecular products. These reaction conditions severely hamper industrial productivity and the use of solid catalysts. Herein, it is shown that the intramolecular Mizoroki‐Heck reaction of ω‐iodide cinnamates proceeds at 1 M concentration when catalyzed by few‐atom Pd clusters, either in solution or supported on a solid, to give different macrocycles in good yields. This paradigmatic increase in reaction concentration not only opens the door for macrocycle production with high throughputs but also enables the use of solid catalysts for a macrocyclization reaction in flow.
Effective autocorrelation‐based spectrum sensing technique for cognitive radio network applications
Authors: Lyes Labsis , Djamal Teguig , Nacerredine Lassami 
Published: April 2023

SummarySpectrum sensing based on detection techniques enables cognitive radio networks to detect vacant frequency bands. The spectrum sensing gives the opportunity to increase the radio spectrum channels re‐utilization. However, the main challenge in spectrum sensing is the simplicity of the considered detection approach and the amount of prior information needed to make an accurate decision. This paper proposes a novel sensing technique based on the autocorrelation function. This novel approach is based on the speed of convergence to zero of all autocorrelation coefficients. This technique shows the highest probability of detection for the same probability of false alarm target at low signal‐to‐noise ratio (SNR) compared with many standard detection techniques. The proposed method has been implemented using GNU Radio software and SDR (software‐defined radio) platforms. The experimental results show the effectiveness of the proposed method under real scenarios.
Analysis of selected sperm samples by a computer‐assisted system with high frame rate: A prospective study
Authors: Tang Shan‐Shan , Lu Jin‐Chun , Xu Yuan‐Hua , Wang Jing , Hong Ren‐Yun , Ge Yan‐Mei , Liang Yuan‐Jiao 
Published: April 2023

AbstractBackground and AimsDue to the rapid motility of the selected sperm, sperm parameters cannot be accurately determined by the manual method. So, the application of a computer‐assisted sperm analysis system with a high frame rate (HFR‐CASA, 85 Hz) in sperm selection is investigated.MethodsA total of 177 semen samples were collected for sperm selection with density gradient centrifugation. Then, the manual method and HFR‐CASA method will be used to observe and analyze the sperm concentration, motility, and percentage of progressively motile sperm (PR) of the selected sperm samples. The quality control of sperm concentration was performed with microballoons. Two selected sperm samples were analyzed 10 times repeatedly to evaluate the accuracy of the HFR‐CASA.ResultsThe results of microballoons analyzed with the HFR‐CASA were in control. The coefficients of variation of sperm concentration, motility, and PR from two selected sperm samples were all below 10%. The results of 177 selected sperm samples analyzed by the manual method and HFR‐CASA showed that although there were significant positive correlations in sperm concentration, motility, and PR between them (p < 0.001), the manual method significantly underestimated sperm concentration (p = 0.002) but overestimated sperm motility and PR (p < 0.001). When sperm concentration was below 50 × 106/mL, the manual method significantly overestimated sperm concentration (p < 0.05). However, when sperm concentration was more than 100 × 106/mL, the manual method significantly underestimated sperm concentration (p < 0.001). Regardless of sperm concentration, the manual method consistently overestimated sperm motility and PR (p < 0.001). When sperm concentration was more than 20 × 106/mL, there was no correlation in sperm PR between them (p > 0.05). When sperm concentration was below 50 × 106/mL, the correct rate of captured sperm by the HFR‐CASA was more than 98%.ConclusionThe HFR‐CASA method is more accurate than the manual method in analyzing the selected sperm samples.
Barriers and facilitators to type 2 diabetes management among slum‐dwellers: A systematic review and qualitative meta‐synthesis
Authors: Ghammari Fawzieh , Jalilian Habib , Khodayari‐zarnaq Rahim , Gholizadeh Masumeh 
Published: April 2023

AbstractBackground and AimsThe prevalence of type 2 diabetes (T2D) is on the rise worldwide, especially in developing countries. There is a significant difference between the slum‐dwellers and other urban dwellers in terms of T2D incidence rate and access to healthcare services. This review aimed to identify barriers and facilitators to T2D management among slum‐dwellers.MethodsA systematic review was conducted to identify barriers and facilitators to T2D management from January 1, 2002 to May 30, 2022. We searched MEDLINE via PubMed, Scopus, Web of Sciences, and Google Scholar. The inclusion criteria were: qualitative or mixed‐methods research, published in English, focused on slum‐dwellers and T2D or its complications, and assessed barriers and facilitators to T2D management among slum‐dwellers. Quality appraisal was conducted using the QATSDD critical appraisal tool. A thematic approach was used for data analysis and synthesis.ResultsA total of 17 articles were included in this review. Three analytical themes were identified: (1) Individual factors consisting of four themes: lifestyle behaviors, informational, psychological, and financial factors; (2) Health system factors consisting of three themes: patient education processes, financial protection, and service delivery; and (3) Contextual factors consisting of three themes: family support, social support, and environmental factors.ConclusionOur review disclosed that the individual, health system, and context influence T2D management among slum‐dwellers. Policymakers can use the findings of this review to reduce barriers and augment facilitators to improve healthcare utilization and self‐care management among patients with T2D in slums.