bluuebunny/crossref_metadata_2025_split huggingface dataset:
Structured reporting for efficient epidemiological and in-hospital prevalence analysis of pulmonary embolisms
Authors: Jorg Tobias , Halfmann Moritz C , Graafen Dirk , Hobohm Lukas , Düber Christoph , Mildenberger Peter , Müller Lukas 
Published: May 2024

AbstractStructured reporting (SR) not only offers advantages regarding report quality but, as an IT-based method, also the opportunity to aggregate and analyze large, highly structured datasets (data mining). In this study, a data mining algorithm was used to calculate epidemiological data and in-hospital prevalence statistics of pulmonary embolism (PE) by analyzing structured CT reports.All structured reports for PE CT scans from the last 5 years (n = 2790) were extracted from the SR database and analyzed. The prevalence of PE was calculated for the entire cohort and stratified by referral type and clinical referrer. Distributions of the manifestation of PEs (central, lobar, segmental, subsegmental, as well as left-sided, right-sided, bilateral) were calculated, and the occurrence of right heart strain was correlated with the manifestation.The prevalence of PE in the entire cohort was 24% (n = 678). The median age of PE patients was 71 years (IQR 58–80), and the sex distribution was 1.2/1 (M/F). Outpatients showed a lower prevalence of 23% compared to patients from regular wards (27%) and intensive care units (30%). Surgically referred patients had a higher prevalence than patients from internal medicine (34% vs. 22%). Patients with central and bilateral PEs had a significantly higher occurrence of right heart strain compared to patients with peripheral and unilateral embolisms.Data mining of structured reports is a simple method for obtaining prevalence statistics, epidemiological data, and the distribution of disease characteristics, as demonstrated by the PE use case. The generated data can be helpful for multiple purposes, such as for internal clinical quality assurance and scientific analyses. To benefit from this, consistent use of SR is required and is therefore recommended.
Hemoglobin Electrophoresis versus Kleihauer–Betke to Determine Bone Marrow Suppression in Fetuses Undergoing Intrauterine Transfusion
Authors: Saucedo Alexander M. , Moise Erin , Nwokocha Mark , Bebbington Michael , Moise Kenneth J. 
Published: May 2024

Objective Mainstay therapy for fetuses affected by maternal red cell alloimmunization is serial intrauterine transfusion (IUT). Testing to determine when fetal red cells have been replaced with donor cells historically involves the use of the Kleihauer–Betke (KB) test. Hemoglobin (Hgb) electrophoresis testing may be more rapid with a reduced cost of analysis. We aimed to determine the correlation between fetal Hgb electrophoresis versus the traditional KB test.
Study Design This is a retrospective analysis of all alloimmunized singleton pregnancies undergoing IUT between January 1, 2021, and July 1, 2023. Maternal and fetal characteristics were collected along with the indication for IUT. A final fetal blood sample was obtained at the conclusion of each transfusion and sent for KB testing and Hgb electrophoresis. The primary outcome was the assessment of these parameters in their ability to predict the replacement of the fetal circulating red cell population with donor cells. Linear regression analysis and repeated measures analysis of variance were performed, and p-values less than 0.05 were considered significant.
Results A total of 56 IUTs were performed in 16 patients. There were 39 (69.6%) final KB test values collected and compared with 30 (53.6%) final Hgb electrophoresis values. Hgb electrophoresis when compared with the KB test demonstrated a significant correlation (R
2 = 0.93; 95% confidence interval, 0.61–0.76; p < 0.001). This same finding held true when examining the correlation at each individual IUT as well. The final KB test and Hgb electrophoresis values significantly decreased with each transfusion (p = 0.003). A predominance of adult donor blood was noted by the third transfusion for both laboratory indices.
Conclusion Fetal Hgb electrophoresis obtained at the time of IUT demonstrates a significant correlation with the traditional KB test.
Key Points
Aliphatic Olefin Epoxidation with Hydrogen Peroxide Catalyzed by an Integrated Mn/TS-1/N System
Authors: Yang Shanxiu , Liu Yuyu , Zhang Zhang , Qian Bo 
Published: May 2024

AbstractPropylene liquid-phase epoxidation with 50–75% H2O2 is an important process for the industrial production of propylene oxide (PO). To realize a propylene epoxidation process that proceeds with low hydrogen peroxide concentration, we developed an integrated Mn/TS-1/N catalytic system via in-situ reaction of Mn/TS-1 with an N-donor ligand, affording the PO product in excellent yield with only 30 wt% H2O2. Other long-chain aliphatic epoxides were also readily synthesized by this catalytic epoxidation system. Moreover, in addition to the standard micro-pressure reactor, a continuous-flow microreactor was developed that executed the hydrogen peroxide propylene oxide (HPPO) process with excellent efficiency for 1300 hours. This innovative Mn/TS-1/N catalyzed epoxidation represents a promising direction for advancing HPPO industrial processes, offering improved efficiency while minimizing the reliance on high concentrations of H2O2.
The Technique and Material Used to Join Transfers Affect the Accuracy and Final Fit of Implant-Supported Prostheses—In Vitro Study
Authors: Mariotto Guilherme de Aguiar , Detogni Anna Caroliny , Persh Monica Cavalheiro , Sinhoreti Mário Alexandre Coelho , Camilotti Veridiana , Mendonça Márcio José 
Published: May 2024

Abstract
Objectives This study evaluated the linear dimensional change of polymerization of three materials and two techniques of the union of molding transfers for implant-supported prostheses used in the open-tray technique.
Materials and Methods A nylon maxilla-shaped matrix was made, two osseous integrated implants were installed, and, over these two, straight conical mini-pillars were installed. Open-tray impression transfers were attached to the mini-pillars, and a silicone guide was made to standardize the connections between the transfers. The samples were divided into six groups (n = 20): PA (Pattern Resin LS, chemically activated acrylic resin in the single step technique); DU (Durallay, chemically activated acrylic resin in the single step technique); BI (Protemp4, bisacrylic resin in the single step technique); PAC (Pattern Resin LS in sectioning and joining of segments technique); DUC (Durallay, in sectioning and joining of segments technique); and BIC (Protemp4, in sectioning and joining of segments technique). The linear dimensional change values that occurred among these transfers were measured in a profile projector (VB300; Starret) coupled to the Quadra Check device, with a resolution of 0.001 mm, performed by a single calibrated operator.
Statistical Analysis Data were submitted to a two-way analysis of variance and Tukey's test (p < 0.01).
Results Statistically significant mean values were found in all comparisons. The PA showed the lowest mean values (µm) of linear dimensional change, both in the single-step technique and in the sectioning and joining technique, in the following order: BI 255.73 (3.81), DU 173.75 (2.30), PA 95.97 (3.20), BIC 23.82 (1.71), DUC 20.85 (2.53), and PAC 13.27 (2.09). The single-step technique showed the worst results, regardless of the material.
Conclusion The sectioning and joining technique reduced the dimensional change in all materials, and the Pattern Resin LS showed the lowest shrinkage mean values, followed by Durallay and Protemp4.
Selective Neurectomy for Postfacial Paralysis Synkinesis: A Systematic Review
Authors: Namavarian Amirpouyan , Cheng Emily YiQin , Shapiro Justin , Ziai Hedyeh , Talei Benjamin , Pai Akshat , Enepekides Danny , Gantous Andres M. 
Published: May 2024

AbstractFacial synkinesis is characterized by unintentional contractions of facial musculature secondary to aberrant facial nerve healing. The associated impairment in facial functioning results in a significant decrease in patients' quality of life. The mainstay treatment for postfacial paralysis synkinesis (PFPS) is chemodenervation and physiotherapy, which requires long-term maintenance neurotoxin injections. This can lead to treatment resistance. Selective neurectomy of the distal branches of the facial nerve has been suggested as an effective surgical treatment of PFPS. This study aims to provide a comprehensive systematic review evaluating the efficacy of selective neurectomy for patients presenting with PFPS. Ovid MEDLINE, Ovid Embase, PubMed, Web of Science, and CINAHL were searched from inception until July 2022. Studies that investigated postoperative outcomes of pediatric and/or adult patients who underwent selective neurectomy as a treatment for PFPS were included. The database search identified 1,967 studies, and 11 were ultimately included based on inclusion and exclusion criteria. These 11 studies represented 363 patients. Studies reported on outcomes following selective neurectomy with or without adjuvant therapies for patients with PFPS. The main outcome categories identified were clinician-reported outcomes and patient-reported outcomes. The studies that used clinician-reported outcomes found an improvement in both synkinesis and facial nerve paralysis (FNP) outcomes following selective neurectomy according to their respective grading systems. Three studies looked at patient-reported outcomes and found increased patient-reported quality of life and satisfaction following selective neurectomy. The most reported complications were upper lip contracture, uneven cheek surface, lagophthalmos, and temporary oral incompetence. Selective neurectomy has demonstrated stable or improved synkinesis, FNP, and quality of life outcomes in patients with PFPS. This approach should be considered for patients with PFPS, particularly for patients with refractory symptoms or those who are unable to undergo continued medical management.
Parent-child conflicts, and punishment of children during the three-week COVID-19 lockdown in Ghana
Authors: Kyei-Gyamfi Sylvester , Kyei-Arthur Frank 
Published: May 2024

AbstractThe study examined the factors contributing to children’s conflicts with their parents, the causes of parental punishment, and the underlying reasons for such punishment during the three-week lockdown enforced in Ghana during the COVID-19 pandemic. A cross-sectional mixed-methods approach was used to obtain data from a sample of 385 children aged 10–17 in the Ghanaian cities of Accra and Tema. Approximately 58% of the participants reported experiencing parental conflict during the three-week lockdown period. Also, parent-child conflicts were more prevalent among older children than younger children, as well as among female children than male children. According to the findings, parental punishment was administered to two out of every ten children for misbehaviour that occurred during the lockdown. The pandemic increased financial hardships, placing many parents under pressure, and driving them to subject their children to many forms of punishment at home. It is recommended that extensive family support and psychosocial measures be put in place in the case of a pandemic lockdown to prevent excessive punishment that can lead to the abuse of children. The Ministry of Gender, Children, and Social Protection (MoGCSP), which oversees child-related matters in the country must lead this.
Impact of psychological safety and inclusive leadership on online learning satisfaction: the role of organizational support
Authors: Atuahene Sampson Agyapong , Qian XuSheng , Ahotovi Thomas Ahoto 
Published: May 2024

AbstractThe appeal of online education within the academic community has grown significantly due to advancements in technology and increased investments made during the pandemic. Despite the rapid expansion of research in online education, most studies have concentrated on technology and teaching techniques, overlooking social factors that also play a crucial role in students’ contentment with online learning. This study uses quantitative methods to investigate the impact of selected social variables on students’ satisfaction with online education. The research employed a designed questionnaire to gather data from African students engaged in online studies abroad. The collected data was then analyzed using SPSS-AMOS version 23. The study utilized a hierarchical linear regression model to assess the influence of different variables on students’ satisfaction with online education. The findings revealed that psychological safety and inclusive leadership positively influenced students’ satisfaction with online education. Conversely, perceived organizational support and learner–learner interaction adversely affected students’ satisfaction in the online learning environment. Moreover, the research highlighted that psychological safety, inclusive leadership, and perceived organizational support positively influenced learner–learner interaction. Additionally, perceived organizational support was identified as a moderator, affecting the relationships between other variables and students’ satisfaction with online education. Because of these findings, educational institutions and researchers are recommended to recognize social constructs’ critical role in students’ satisfaction with online education. It is essential to broaden the focus beyond technological aspects and teaching methods, as social variables are equally vital for students to have a fulfilling academic experience in online education.
The eXact integral simplified time-dependent density functional theory (XsTD-DFT)
Authors: de Wergifosse Marc , Grimme Stefan 
Published: May 2024

In the framework of simplified quantum chemistry methods, we introduce the eXact integral simplified time-dependent density functional theory (XsTD-DFT). This method is based on the simplified time-dependent density functional theory (sTD-DFT), where all semi-empirical two-electron integrals are replaced by exact one- and two-center two-electron integrals, while other approximations from sTD-DFT are kept. The performance of this new parameter-free XsTD-DFT method was benchmarked on excited state and (non)linear response properties, including ultra-violet/visible absorption, first hyperpolarizability, and two-photon absorption (2PA). For a set of 77 molecules, the results from the XsTDA approach were compared to the TDA data. XsTDA/B3LYP excitation energies only deviate on average by 0.14 eV from TDA while drastically cutting computational costs by a factor of 20 or more depending on the energy threshold chosen. The absolute deviations of excitation energies with respect to the full scheme are decreasing with increasing system size, showing the suitability of XsTDA/XsTD-DFT to treat large systems. Comparing XsTDA and its predecessor sTDA, the new scheme generally improves excitation energies and oscillator strengths, in particular, for charge transfer states. TD-DFT first hyperpolarizability frequency dispersions for a set of push-pull π-conjugated molecules are faithfully reproduced by XsTD-DFT, while the previous sTD-DFT method provides redshifted resonance energy positions. Excellent performance with respect to the experiment is observed for the 2PA spectrum of the enhanced green fluorescent protein. The obtained robust accuracy similar to TD-DFT at a fraction of the computational cost opens the way for a plethora of applications for large systems and in high throughput screening studies.
Simulation study of electromagnetic protection of ignition chip
Authors: Niu Huiyuan , Li Hui , Ren Wei , Chang Yingke 
Published: May 2024

The purpose of this paper is to study the adaptability and enhancement methods of ignition chips in complex electromagnetic environments. In this paper, combined with simulation and calculation technology, we first establish the electromagnetic–electrical–thermal coupling simulation model of ignition chips and analyze the influence of two electromagnetic environments, continuous electromagnetic wave and nuclear electromagnetic pulse, on the electrical–thermal coupling in the bridge area of the ignition chip. The results show that a continuous electromagnetic wave field strength of 1200 V/m, irradiated for 5 s, a nuclear electromagnetic pulse with a rise time of 5 ns, a half-height width of 24 ns, and a leg wire length of 350 mm will cause the ignition chip to fire accidently. In order to suppress its accidental firing, the electromagnetic protection is enhanced by using parallel Transient Voltage Suppressor (TVS) diodes. It has been shown that parallel TVS diodes provide good protection against both continuous electromagnetic waves and nuclear electromagnetic pulses. In particular, the peak induced current decreases by more than 64.7% during the action of continuous electromagnetic waves, and the maximum temperature in the bridge area decreases by 54.34% during the action of nuclear electromagnetic pulses.
University students’ recognition of typical wave optics patterns
Authors: Susac Ana , Küchemann Stefan , Planinic Maja , Kuhn Jochen 
Published: May 2024

Abstract
The recognition and distinction of typical interference and diffraction patterns are among the expected learning outcomes of studying wave optics. Previous studies have reported high school students’ difficulties with this task. In this study, we investigated university students’ ability to distinguish typical wave optics patterns obtained by the double slit, single slit, and diffraction grating. We also used eye tracking to obtain an insight into the distribution of students’ visual attention during the task. The results showed that university students had similar difficulties in recognizing wave optics patterns as high school students. They mostly struggled with identification of the double-slit interference patterns and diffraction grating patterns of monochromatic light while they were more successful in recognition of the diffraction pattern of white light on an optical grating and single-slit diffraction patterns. The eye-tracking data also revealed that students spent more time attending colourful than grey patterns in questions regarding diffraction of white light on an optical grating, thus suggesting that they were aware that the diffraction grating separates white light into colours. In questions regarding monochromatic light patterns, students overall mostly attended the single-slit diffraction pattern probably because of its distinct central maximum. Furthermore, the longer fixation duration for patterns compared to the text implies that students found it easier to extract information from the text than from the patterns. No prior research has compared the number of transitions during problem solving with the accuracy of the answers. In this study, we observed that students who incorrectly solved a task demonstrated a significantly higher number of gaze transitions between the question and the options, as well as among different options. The results of this study indicate that the recognition of typical wave optics patterns is also difficult for university students, thus suggesting that more attention should be paid to systematic observation and identification of key features of basic wave optics phenomena in lecture demonstrations and student laboratories.
First-principles study of two-dimensional transition metal carbide M

n

+
1

C

n

O2 (M = Nb,Ta)
Authors: Shang Yue , Han Yifan , Wan Wenhui , Liu Yong , Ge Yanfeng 
Published: May 2024

Abstract
In the present work, the three stable MXenes M

n

+
1

C

n

O2 (M = Nb,Ta) are explored based on first-principles calculations. These materials are important derivatives of 2D materials and exhibit distinctive properties, holding vast potential in nanodevices. All these M

n

+
1

C

n

O2 (M = Nb,Ta) materials exhibit outstanding superconducting performance, with corresponding superconducting transition temperatures of 23.00 K, 25.00 K, and 29.00 K. Analysis reveals that the high superconducting transition temperatures of MXenes M

n

+
1

C

n

O2 (M = Nb,Ta) are closely associated with the high value of the logarithmic average of phonon frequencies,

ω

log

, and the strong electron–phonon coupling, attributed to the crucial contribution of low-frequency phonons. Additionally, we applied strain treatments of 2% and 4% to M

n

+
1

C

n

O2 (M = Nb,Ta), resulting in varying changes in superconducting transition temperatures under different strains.
A novel error modulation rotation scheme for dual-axis rotational inertial navigation system
Authors: Wei Dong , Guan Bofan , Fu Qiangwen , Li Sihai 
Published: May 2024

Abstract
Dual-axis rotational inertial navigation system (RINS) can effectively suppress the error accumulation of inertial navigation system, thereby improve the long-term navigation accuracy through rotating inertial measurement unit (IMU) according to corresponding rotation scheme. The navigation accuracy of RINS is predominantly contingent on the IMU rotation scheme. A reasonable rotation scheme can effectively attenuate or even obviate the navigation errors stemming from IMU errors, whereas an ill-considered scheme may lead to swift divergence of navigation errors. In this paper, the principle of IMU errors suppression is meticulously analyzed during rotation. By comprehensively evaluating the impact of individual IMU errors on navigation accuracy alongside their corresponding error modulation characteristics, a novel 32-position rotation scheme is devised. The proposed scheme demonstrates a notable capacity to minimize the adverse effects of IMU errors on navigation accuracy and to enhance error suppression efficacy within a modulation cycle. Meanwhile, the long-endurance navigation accuracy of RINS is substantially enhanced. The efficacy of the 32-position scheme posited herein is empirically substantiated through a 24 h simulation and navigation experiment.
Bicone nanoflower evolution and multi-peak emission of polymer caped Cu doped ZnO
Authors: Neelamkodan Hind , Megha Unikoth , Chennabasappa Madhu , Binitha Manathanath Puzhakkara 
Published: May 2024

Abstract
A low-temperature polymer-assisted wet chemical method was used to synthesise Cu-doped ZnO bicone nanoflowers at three different polyethylene glycol (PEG) concentrations. The effects of PEG concentration on the structural, morphological and optical properties of Cu doped ZnO nanostructures were studied. X-ray diffraction studies revealed that the as-synthesized Cu doped ZnO nanostructures are highly crystalline with a hexagonal wurtzite phase. The scanning electron microscopy analysis showed that the prepared nanostructures have bicone- nanoflower morphology and PEG concentration has strongly influenced the size as well the shape of nanoflowers. The TEM analysis confirmed the nanoflower morphology and the presence of diffraction planes obtained from the XRD data. The compositional analysis was performed by x-ray photoelectron Spectroscopy. The surface passivation effect of PEG on the band gap energies was studied by analysing UV -visible spectra of all the samples. The room-temperature fluorescent spectra of all the nanoflowers showed multiple peak emissions, both in the ultra-violet and visible regions, with varying intensities. These recasted multiple peaks are attributed to the morphological modification caused by the PEG addition.