bluuebunny/crossref_metadata_2025_split huggingface dataset:
Charged Surface of Polyacrylonitrile Colloid and Its Application to N2/CO2Separation
Authors: Kwon Tae‐Gyun , Lee Juyeong , Jo Oong Hyeon , Kang Beom‐Goo , Kang Sang Wook 
Published: October 2023

AbstractNano‐sized polyacrylonitrile (PAN) colloidal dispersions of 44.6 ± 8.3 nm prepared by the modified emulsion polymerization method are utilized for gas separation. The emulsion (o/w) polymerization using organic solvent instead of precipitation polymerization is utilized, and both the size of the colloidal particle and the zeta potential could be controlled by the content of the material constituting emulsion. Thus, the solubility of CO2is dependent on the zeta potential on the surface of colloids, resulting in that the degree of absorption of CO2is controllable. Then, N2/CO2separation experiment is carried out by applying the synthesized PAN colloidal dispersions into a polymer composite. The composite membranes are prepared by adding PAN colloidal dispersions based on poly(vinyl pyrrolidone) (PVP). It is observed that the neat PVP membrane has no separation performance, while the PVP/PAN colloidal composite film shows the improved N2/CO2selectivity of 17. This improved separation performance is due to the fact that the solubility of CO2decreased by absorption to specific functional groups, resulting in the enhancement of N2separation.
Antiferroelectric AgNbO3@KH550 Doped PVDF/PMMA Composites with High Energy Storage Performance
Authors: Wang Zhuo , Kang Jinteng , Wu Dan , Xue Ying , Yi Zhihui 
Published: October 2023

AbstractThe residual polarization of antiferroelectric ceramics is very small, yet they possess high energy storage density and efficiency. Incorporating antiferroelectric ceramic particles into a polymer matrix is beneficial for improving the energy storage performance of composites. However, excessive amounts of ceramic particles can lead to aggregation within the polymer, resulting in defects and a significant reduction in composite film performance. In this study, the antiferroelectric AgNbO3 is selected as the filler and modified with silane coupling agent KH550. poly(vinylidene fluoride) (PVDF) and polymethyl methacrylate (PMMA) are blended as the matrix, and the energy storage performance of the composite is improved by adjusting the additional amount of PVDF. The structure, dielectric properties, and energy storage properties of the composites are systematically studied. The results show that hydrogen bonds are formed between PVDF and PMMA, and PVDF and PMMA are tightly bonded under the action of hydrogen bonds. The compatibility of PVDF with PMMA is optimal when the mass fraction of PVDF is 30 wt%. Moreover, with the synergistic effect of the antiferroelectric filler AgNbO3, the breakdown strength of AgNbO3/PVDF/PMMA composites reaches 430 kV mm−1, and the energy storage density reaches 14.35 J cm−3.
Performance evaluation of resolution and sensitivity of C‐SPECT's variable slat‐stack collimator
Authors: Sankar Poopalasingam , Stentz Dale J. , Johnson Lindsay C. , Metzler Scott D. 
Published: October 2023

AbstractBackgroundMyocardial perfusion imaging is commonly performed using SPECT, where both general‐purpose and dedicated scanners are available. A limitation with general‐purpose systems has been the inability to image dynamically since different projections are obtained far apart in time due to scanner rotation. Dedicated systems can have this capability since they acquire completely sampled projections (i.e., those with enough angular views for reconstruction) with short time frames. C‐SPECT, does not need any scanner or patient motion to obtain complete projections, allowing fast dynamics. When imaging fast dynamics, the optimal collimator settings are not necessarily the same as for static imaging, where longer acquisitions can be utilized. Thus, C‐SPECT offers adaptive collimation in the transverse and axial directions.PurposeThe performance of adaptation in the axial direction was characterized herein.MethodsThe ratio of the resolution metric in high‐sensitivity mode to that in the high‐resolution mode, termed resolution boost factor, was determined. Analogously, the sensitivity boost factor was also determined. Comparisons were made with theory and simulations.ResultsThe boost factors for resolution and sensitivity, averaged over the 14 modules of the system, were determined to be 1.72 and 1.75, respectively.ConclusionsThe boost factors, which ideally would be two, were between 10% and 15% below optimal values and tracked each other, suggesting mechanical challenges in the apparatus, such as incomplete closure of adjacent slats, but show reasonably successful adaptation between modes.
Vor 50 Jahren: Nobelpreis für die Sandwichkomplexe
Authors: Werner Helmut 
Published: October 2023

AbstractDer Chemie‐Nobelpreis 1973 ging an zwei Metallorganiker, deren Konkurrenz die Synthese und Untersuchung einer faszinierenden Stoffklasse voranbrachte. Die von Ernst Otto Fischer und Geoffrey Wilkinson erforschten Sandwichkomplexe sind heute Basiswissen der metallorganischen Chemie.
Die Asac feiert ihr 75‐jähriges Bestehen
Authors: Krska Rudolf 
Published: October 2023

AbstractIn der Österreichischen Gesellschaft für Analytische Chemie (Asac) ist die ganze Bandbreite des Fachs vertreten. Dank des Einsatzes der Mitglieder ist sie gut an den heimischen Universitäten und der Industrie verankert.
Time‐optimal trajectory planning of a redundantly actuated planar parallel robot driven with series elastic actuators
Authors: Kordik Thomas , Zauner Christian , Marauli Tobias , Gattringer Hubert , Müller Andreas 
Published: October 2023

AbstractThis paper addresses the time‐optimal trajectory planning of a redundantly actuated parallel robot driven by series elastic actuators. Here, the actuation redundancy allows prestressing the elastic components of the drives and enables more degrees of freedom in the trajectory planning. To this end, a time‐optimal control problem is formulated that takes also the physical constraints into account, that is actuation torques, task and joint space limits and self‐collisions. A flatness‐based parametrization of the dynamics is used in the nonlinear optimization problem and solved with the multiple shooting technique within the CasADi framework using IPOPT as a solver. Results are shown and compared to time‐optimal trajectories, both redundantly and non‐redundantly actuated with rigid drives.
Synthesis, characterization, and properties of a novel propargyl ether naphthalene phenolic resin
Authors: Chen Yuzhi , Guo Kangkang , Wang Fan , Zhu Yaping , Qi Huimin 
Published: October 2023

AbstractIn this study, 1,5‐dihydroxynaphthalene moiety was introduced into a novolac resin structure, and propargyl ether naphthalene phenolic resin (PNPF) was synthesized by the Williamson etherification reaction, which improved the heat resistance of the resin and its processability. The structure of the PNPF resin was characterized using 1H NMR and FTIR analysis, and its processability, heat resistance, thermal expansion, and dielectric properties were evaluated. The results revealed that the addition of 1,5‐dihydroxylhine, increased the reaction activity of the PNPF resin, and decreased its initial curing temperature, with the resin exhibiting excellent processability. The cured resin also showed excellent heat resistance and thermomechanical properties. The 5% weight loss temperature (Td5) and glass transition temperature (Tg) of the resin increased to 437.61 and 362.04°C, respectively, while the coefficient of thermal expansion decreased from 60.17 to 44.52 ppm, with a reduction of 26.01%. Moreover, the dielectric constant and dielectric loss of the cured resin were 3.02 and 0.00239, respectively.
The impact of romantic relationships on deception detection: Exploring the gender differences and the mediating role of mentalizing
Authors: Wang Shujian , Hou Wenxin , Wang Yueyang , Tang Qihui , Tao Yanqiang , Liu Xiangping 
Published: October 2023

AbstractIn evolution, romantic relationships serve as the foundation for breeding and producing offspring. The ability to detect deception in these relationships can safeguard the investment and cultivation of descendants, leading to greater chances of survival and reproduction. However, barely any research has been carried out within this domain. The current study investigated the preliminary relationship between romantic relationships, mentalizing ability, and deception detection ability through an empirical experiment. Participants were primed by their romantic experiences and neutral experiences, and then went through a Reading the Mind in the Eyes (RTM) task and the deception detecting task for real person crime‐type videos. Results showed that romantic relationships can improve participants' emotion recognition ability toward negative emotions, and females performed better in the deception detection task than males did. Most importantly, romantic relationships can improve participants' deception detection ability through the mediator of mentalizing ability. Though gender difference was not statistically significant in the RTM task, the results lay a solid foundation for further investigation into females' mentalizing ability and disclose the evolutionary meaning of romantic relationships.
State‐dependent alterations of implicit emotional dominance during binocular rivalry in subthreshold depression
Authors: Qiu Shiming , Luo Xu , Luo Yuhong , Wei Dandan , Mei Gaoxing 
Published: October 2023

AbstractBinocular rivalry, a visual perception phenomenon where two or more percepts alternate every few seconds when distinct stimuli are presented to the two eyes, has been reported as a biomarker in several psychiatric disorders. It is unclear whether abnormalities of binocular rivalry in depression could occur when emotional rivaling stimuli are used, and if so, whether an emotional binocular rivalry test could provide a trait‐dependent or state‐dependent biomarker. In the current study, 34 individuals with subthreshold depression and 31 non‐depressed individuals performed a binocular rivalry task associated with implicit emotional processing. Participants were required to report their perceived orientations of the rival gratings in the foreground and to neglect emotional face stimuli in the background. The participants were retested after an approximately 4‐month time interval. Compared to the non‐depressed group, the subthreshold depression group showed significantly longer perceptual dominance durations of the grating with emotional faces as the background (i.e., implicit emotional dominance) at the initial assessment. However, the abnormality was not found at the follow‐up assessment. More importantly, we found smaller changes in depressive severity at the follow‐up assessment for individuals displaying longer emotional dominance at the initial assessment than for individuals with weaker emotional dominance. The current emotional binocular rivalry test may provide an objective, state‐dependent biomarker for distinguishing individuals with subthreshold depression from non‐depressed individuals.
Scalar Perturbations of Gravitational Collapse under Homotopy Perturbation Method: A Critical Study on the Rectangular and Price Potential
Authors: Aziz Abdul , Das Amit , Ray Saibal 
Published: October 2023

AbstractIn order to unveil different features of gravitational waves due to massive objects like black hole etc., researchers primarily attempt to find the corresponding quasi normal modes from the relevant wave equations. In the present article, homotopy perturbation method (HPM) is employed to obtain the wave functions by solving wave equations for one‐dimensional potential barriers. Under this scheme (i) for constant potential barrier a generalized solution which reduces to the known solution as done by Chandrasekhar and Detweiler [Proc. R. Soc. Lond. A344(1975) 441] is produced, (ii) the wave equation for the Price potential [Phys. Rev. D5(1972) 2419; Phys. Rev. D5(1972) 2439] by HPM is solved. The wave functions (graphically) as well as quasi‐normal modes to those of the Press solution (1973) are compared. The present investigation is important in connection to further study related to the Zerilli potential and Regge‐Wheeler potential in case of black hole.
Variability of soil thermal diffusivity in three Iowa fields
Authors: Nassar Ibrahim N. , Abdallah Ahmed M. , Horton Robert 
Published: October 2023

AbstractSoil thermal properties influence the rates of chemical and biological reactions in the soil, seed germination, crop establishment, and productivity. Soil temperature varies with time and depth, and thermal diffusivity (α) is the main property associated with soil temperature variations. Variations in α within row‐cropped fields under long‐term tillage practices are not well documented in Iowa fields. The objective of this study is to determine α variations within three central Iowa fields under long‐term tillage practices and to estimate the required number of measurement sites within each field to determine α at a specified precision. Each field receives different tillage operations; one field is fall moldboard plowed followed by spring disking (MP), another field is fall chisel plowed followed by spring disking (CP), and the third field is ridge no‐tilled (RN) slot planted. Thermocouples are used to measure soil temperature at two depths, that is, 1 and 10 cm, at 49 locations (49 grid locations; 1.5 m × 3 m) in each of three adjacent fields. After allowing the thermocouples to equilibrate with the soil environment for 2 weeks in each field, hourly 1‐ and 10‐cm depth soil temperature observations were recorded for a separate 24‐h period in each field following rainfall events. Soil temperature measurements with the amplitude and phase equations were analyzed, and 49 α values were determined in each field. The larger the bulk density, the larger the thermal diffusivity. MP had the largest α values, while CP had the lowest values. The mean and standard deviation values for α in the MP, CP, and RN fields were 23 ± 4.8, 13 ± 2.2, and 21 ± 4.0 cm2 h−1, respectively. The coefficients of variation were similar for the three fields, ranging from 17% to 21%. The minimum number of samples needed to obtain a confidence interval of 7 cm2 h−1 for α was two, five, and seven, respectively, for the CP, RN, and MP fields. The MP field had the largest mean α value and required the largest number of samples to determine α at a specified precision.
Eccentric compression behavior of circular concrete‐filled steel tubes reinforced with internal latticed steel angles
Authors: Chen Ju , Hu Liang , Wang Jun , Song Sha‐Sha 
Published: October 2023

AbstractThe eccentric compression behavior of the CFSTs reinforced with inner latticed steel angles was experimentally investigated, and test results, such as the load–displacement curves, load‐strain curves, distributions of lateral deflection, and ultimate load, were obtained and analyzed. Test results showed the influence of the latticed steel angles on the ultimate load was not obvious when the steel consumption was relatively small, and the lateral deformation was not obvious when the compression load was smaller than 80% of the ultimate load. The corresponding finite element (FE) model was established and validated by the test results, and parametric analysis was also conducted subsequent to validation. The analysis results showed the contribution of latticed steel angles to the ultimate load would be diminished as the eccentric distance increases. Moreover, the design equations for the ultimate load were proposed based on the FE results, and the calculation results indicated the proposed design equations can predict the ultimate load conservatively and safely.
The inhibitory effects of zinc oxide nanoparticles on clinical isolates of Microsporum canis in dogs and cats
Authors: Khanipour Machiani Masoomeh , Jamshidi Shahram , Nikaein Donya , Khosravi Alireza , Balal Asad 
Published: October 2023

AbstractIntroductionMicrosporum canis is the most common dermatophyte infecting pets and their owners, and its long duration of treatment and increasing rate of drug resistance have caused the attention of researchers to be directed towards the use of nanoparticles and new alternatives for treatment. This study investigated the antifungal effects of zinc oxide (ZnO) nanoparticles on clinical isolates of M. canis in dogs and cats and subtilisin 1 (SUB1) gene expression.Materials and methodsZinc oxide nanoparticles were prepared using the wet chemical method at a concentration of 4000 ppm. Its antifungal potential was evaluated at concentrations of 62.5–4000 ppm by disk diffusion and microdilution methods against 10 isolates of M. canis. The effect of this product on SUB1 gene expression was investigated by quantitative real‐time PCR method.ResultsThe results of the disk diffusion test showed that the highest inhibitory diameter was at the highest concentration of ZnO nanoparticles (34 mm), and the inhibitory zone was observed in dilutions up to 250 ppm. The minimum inhibitory concentration (MIC) of ZnO nanoparticles was between 250 and 500 ppm, and the minimum fungicidal concentration was between 500 and 1000 ppm. There was a significant reduction in SUB1 gene expression in sub‐MIC concentration (125–250 ppm) (p < 0.05).ConclusionThis study showed that ZnO nanoparticles have a concentration‐dependent inhibitory effect on M. canis. Moreover, ZnO nanoparticles could decrease the expression of SUB1, an enzyme involved in fungi adhesion to the epidermis. Nevertheless, more studies must be done in the future to determine the possible side effects and safety of ZnO nanoparticles along with their efficacy in vivo.
The reference range of lamotrigine in the treatment of epilepsy in children: a systematic review
Authors: Chen Jingjing , Huang Liang , Zeng Linan , Jiang Zhimei , Xiong Meiping , Jia Zhi-Jun , Cheng Guo , Miao Liyan , Zhao Limei , Zhang Lingli 
Published: October 2023

AbstractPurposeThis study intends to assess the reference range of lamotrigine concentration for treating childhood epilepsy.MethodsPubMed, Ovid-Embase, The Cochrane Library, CNKI, WanFang data and VIP databases were searched from database inception to January 2022. RCT, cohort study, case–control study, cross-sectional study that estimated the reference range of lamotrigine for children epilepsy treatment were included. The data extracted included basic information, statistical methods, data type, and results of reference range. Descriptive analysis was performed for them.Results8 studies were included and estimated the reference range, and all of them were calculated based on efficacy data and/or concentration data. Statistical methods including ROC curve, concentration-effect curve, mean ± standard deviation, 95% confidence interval and percentile interval were utilized. For lamotrigine monotherapy, the lower limits ranged from 2.06 mg/L to 3.99 mg/L, and the upper limits ranged from 8.43 mg/L to 9.08 mg/L, showing basic consistency. However, for lamotrigine concomitant with valproate, the lower limits ranged from 2.00 mg/L to 8.00 mg/L, and the upper limit was 11.50 mg/L, for lamotrigine concomitant with other antiepileptics, the lower limits ranged from 1.00 mg/L to 3.09 mg/L, and the upper limits varied from 5.90 mg/L to 16.24 mg/L, indicating inconsistency.ConclusionSeveral studies have estimated the reference range of lamotrigine for childhood epilepsy, while controversy exist and no studies have determined the upper limit of the range based on safety data. To establish the optimal reference range, further high-quality studies are necessary that consider both efficacy and safety data.
Effectiveness of an e-Health Quasi-Randomized Controlled Universal Prevention Program for Eating Disorders in Spanish Adolescents
Authors: Pérez-Vázquez Jorge , González-Roz Alba , Amigo-Vázquez Isaac 
Published: October 2023

AbstractEating disorders (EDs) and sub-threshold conditions are prevalent in the adolescent population. Unfortunately, most preventive interventions have been targeted at emerging adults and the effectiveness of online prevention programs has yet to be determined in adolescents. This study sought to examine the short-term effectiveness of a universal e-Health psychoeducational prevention program for EDs compared to a control (non-intervention) group in Spanish adolescents. Using a quasi-randomized trial design, a total of 161 [% girls: 45.96; Mage(SD) = 12.43 (0.43)] adolescents from 5 participating schools were allocated to two intervention arms: (1) psychoeducational intervention (n = 79) and (2) wait-list control (n = 82). The intervention was delivered over 3 months through 3 modules that were accessible 24/7 and 3 school sessions guided by the students´ tutors focusing on nutrition, promoting a healthy lifestyle, mitigating body concerns, and social pressures. Participants completed an online assessment battery including the Eating Attitudes Test (EAT-26) and measures of self-esteem, family disruption, compliance with the Mediterranean diet, and lifestyle. Correlational analysis showed small to moderate relationships between self-esteem and family function (rho = 0.413, p = 0.001), BMI (body mass index) and the EAT-26 dieting subscale (rho = 0.417, p = 0.001), physical activity and the bulimia subscale (rho =  − 0.237, p = 0.003), and self-esteem and the dieting subscale (rho =  − 0.223, p = 0.004). At the post-intervention assessment, the intervention group showed a statistically significant reduction in ED risk (EAT-26) (d =  − 0.323, p = 0.040) and the oral control subscale (d = 0.327, p = 0.038). The e-health intervention including tutor-led digital components was effective for reducing ED risk in children. Results must be interpreted with caution due to the low statistical power and the limited sample size. Large scale randomized controlled trials with longer follow-ups will be needed to bolster the evidence.
Factors influencing medical imaging technology uptake by private hospitals
Authors: Reyes-Santias Francisco , Cordova-Arevalo Octavio , Dominguez Ivan Busto , Antelo Manel 
Published: October 2023

Abstract
Purpose
This article analyses the factors influencing the uptake of computed tomography (CT) and magnetic resonance imaging (MRI) technologies by a sample of private hospitals located in Galicia-North of Portugal European Region.

Methods
Regarding adoption, associations with the different variables were analysed by means of binary logistic regression for CT and MRI of data from 24 private hospitals for the period 2006–2019. The sample data used to perform the regression analyses were panel data (Wooldridge in Econometric Analysis of Cross Section and Panel Data, Cambridge, Massachusetts, 1) and statistical significance was established at p ≤ 0.05.

Results
We find that hospital size, proxied by the number of beds, best explains the decision to adopt CT technology, while the only sociodemographic variable that affects the adoption decision is age above 64 years. Hospital size is also the main explanatory variable for MRI technology adoption, and in this case, all sociodemographic variables, except for population density, affect the adoption decision.

Conclusions
The availability of a CT scanner reduces the probability of a private hospital adopting MRI technology. Contracts with Public Sector have a counterfactual effect on CT uptake and a negative influence on MRI uptake.