bluuebunny/crossref_metadata_2025_split huggingface dataset:
An efficient fabrication method of lightweight aramid nanofibrous aerogels for high-efficient sound absorption and thermal properties
Authors: Peng Hao , Qin Wenfeng , Li Gang , Xue Yunsheng , Yan Ran , Zhou Bin , Pang Jie , Zhao Xin , Guo Ronghui 
Published: December 2023

Abstract
The aramid nanofibrous aerogels (ANFs) have various application prospects due to their ultra-light, high porosity and excellent properties of aramid fibers. However, the preparation of ANFs requires long preparation time and their ultra-dense pore structure leads to poor sound penetration and high sound energy reflectivity, which ultimately makes the overall sound absorption performance of ANFs poor. Therefore, a strategy for synthesis of ANFs is designed to achieve light weight, excellent thermal insulation performance and significantly improve sound absorption properties. This strategy combines cell pulverizing, pump-filtration molding, and directional freezing to ensure structural strength of the aerogel without the addition of cross-linking agents, and this process enables the ANFs to introduce in macro-pores while keeping nano-pores. The structure of multi-layered pores effectively reduces the reflectivity of incident acoustic energy and improves the sound absorption coefficient. The interconnected macro-pores and interlaced small pores of ANFs provide good sound absorption performance (sound absorption average (SAA) = 0.338), excellent flame retardant and thermal insulation properties (thermal conductivity = 0.0635 W (m*K)−1) with ultralight (density = 40.5 mg cm−3) in a thinner thickness (15 mm), which extend the potential of ANFs in areas of noise control and thermal insulation. In addition, the structure of multi-scaled pores can also be formed inside other aerogels by using the method of cell pulverization and filtration preparation, which can be helpful for improving their properties of thermal insulation and sound absorption.
Strategy for perovskite solar cells approaching to S–Q limited efficiency
Authors: Peng Yinsheng , Tu Jielei , Wang Shurong , Zhou Zhineng , Yao Minghai , Tang Meiling 
Published: December 2023

Abstract
Despite recent substantial improvements in the efficiency of perovskite solar cells, the record efficiency of single-junction perovskite solar cells still falls short of the theoretical limiting efficiency predicted by Shockley–Queisser due to the presence of various loss mechanisms. It is essential to determine the dominant loss factors limiting power conversion efficiency (

PCE

) to clarify the future technical strategy towards ultimate efficiency. In this paper, we numerically investigate the impact of various loss mechanisms on the performance of realistic record perovskite solar cells, and identify the most important factors limiting the

PCE

of perovskite solar cells. The results demonstrate that Shockley–Read–Hall recombination and series resistance, as well as optical loss are the most important factors for future improvement in efficiency.
Advanced robust control design and experimental verification for trajectory tracking of model-based uncertain collaborative robots
Authors: Zhen ShengChao , Li Runtong , Liu Xiaoli , Chen Ye-Hwa 
Published: December 2023

Abstract
At the core of this research is the pursuit of enhancing the trajectory tracking performance of six-degree-of-freedom collaborative robots, with a particular focus on addressing the challenges posed by uncertainties in real-world applications. One of the primary issues encountered with existing methods is the susceptibility of trajectory tracking to uncertainties, which can significantly hinder the performance of robotic systems. To address these challenges, we propose an advanced control method, known as the model-based proportional-derivative controller, or MPDP controller for short, which represents an innovative fusion of model-based PD control principles with a robust control algorithm. This amalgamation is driven by the need to mitigate the impact of uncertainties and external disturbances on trajectory tracking. A comprehensive assessment grounded in Lyapunov theory has been undertaken to validate the effectiveness of our approach. The analysis has firmly established that our method ensures not only the ultimate boundedness but also the uniform boundedness of the robotic system, which is critical for its operational stability. Both experimental and simulation studies have been meticulously conducted to benchmark the performance of the MPDP controller against the conventional proportional-integral-derivative controller, which serves as a widely adopted baseline in the field. The results unequivocally demonstrate the superiority of the MPDP controller across multiple dimensions. It exhibits exceptional robustness, resulting in a smaller steady-state tracking error, a critical advantage when addressing inherent uncertainties and external disturbances that can perturb the robot system. This translates to a more stable trajectory tracking performance. Furthermore, the MPDP controller empowers the robot with the capability to precisely follow predefined trajectories, thus ensuring high-precision and reliable execution of tasks. This feature significantly contributes to an overall enhancement of system performance and productivity.
A dual-weight domain adversarial network for partial domain fault diagnosis of feedwater heater system
Authors: Wang Xiaoxia , Zhang Xiaoxuan 
Published: December 2023

Abstract
Domain adaptation (DA) approaches have received significant attention in industrial cross-domain fault diagnosis. However, the scarcity of sufficient labeled fault data, particularly under varying loading conditions and harsh operational environments, can give rise to distinct label spaces between two domains, thereby impeding the application of DA-based diagnosis methods. In this paper, we propose a novel dual-weight domain adversarial network (DWDAN) for diagnosing partial domain faults of feedwater heater system in a large-scale power unit, where the target label space is a subset of the source domain. Firstly, domain adversarial network with an instance-based feature learning strategy is constructed to capture domain-invariant and class-discriminative features hidden in raw process data, thereby enhancing feature extraction and generalization abilities of fault diagnosis. Furthermore, a dual-stage reweighted induction module is designed to quantify the contribution of samples from both class-level and sample-level for selective adaptation. This module can automatically eliminate outlier fault categories in the source domain and facilitates alignment of feature distributions for shared fault categories. Comprehensive experiments conducted on the feedwater heater system of a 600 MW coal-fired generating unit demonstrate the outstanding performance of DWDAN.
The Impact of Al3+ ion substitution on microwave absorption of hexaferrite compound Ba0.6Sr0.4Fe12−xAlxO19 (x = 0.25, 0.50, 0.75, and 1.00)
Authors: Gunanto Yohanes Edi , Sitompul Henni , Izaak Maya Puspitasari , Jobiliong Eric , Yunasfi Y , Setiawan Jan , Adi Wisnu Ari , Manaf Azwar 
Published: December 2023

Abstract
This paper discusses the impact of Al3+ ion substitution on Fe3+ ions in the hexaferrite compound Ba0.6Sr0.4Fe12−xAlxO19 on the reflection loss value and bandwidth in absorbing microwaves. Hexaferrite Ba0.6Sr0.4Fe12−xAlxO19 (x = 0.25, 0.50, 0.75, and 1.00) was synthesized by high-energy ball milling (HEBM) for forty hours, followed by sintering at 1000 °C in the air for five hours. Then, the crystal structure, formed phase, surface morphology, magnetization, and ability to absorb microwaves in the X-band region were successively characterized. All samples (x = 0.25, 0.50, 0.75, and 1.00) had a single phase with a hexagonal crystal structure. The particle size remained heterogeneous, ranging from 200 to 300 nm, with a platelet-like shape. The maximum amount of magnetic energy that could be absorbed by the material (Ms) increases from x = 0.25 to 0.75 and then decreases slightly for x = 1.00. The maximum value of reflection loss (RLmax) decreases as x increases. For x = 0.25, RLmax is − 16.17 dB (f = 11.06 GHz) with a bandwidth of 3.56 GHz, whereas for x = 1.0, RLmax is −13.94 dB (f = 11.14 GHz) with a bandwidth of 1.68 GHz.
The phase diagram of the baxter-Wu model in the magnetic field and temperature plane
Authors: Monroe James L 
Published: December 2023

Abstract
Using the Fisher zeros of the partition function of a finite sized cluster with ‘spherical’ boundary conditions an approximate phase diagram in the magnetic field—temperature plane is obtained for the Baxter-Wu model. The phase diagram compares favourably with previous approximations as well as the known exact results when the magnetic field is zero. The accuracy of the approximated phase diagram, especially for small values of the magnetic field, is dependent on the fact, as shown previously, that for zero magnetic field the Fisher zeros for this cluster lie on loci giving the exact zero field critical temperature.
QCD axion hybrid inflation
Authors: Narita Yuma , Takahashi Fuminobu , Yin Wen 
Published: December 2023

Abstract
When the inflaton is coupled to the gluon Chern-Simons term for successful reheating, mixing between the inflaton and the QCD axion is generally expected given the solution of the strong CP problem by the QCD axion. This is particularly natural if the inflaton is a different, heavier axion.
We propose a scenario in which the QCD axion plays the role of the inflaton by mixing with heavy axions. In particular, if the energy scale of inflation is lower than the QCD scale, a hybrid inflation is realized where the QCD axion plays the role of the inflaton in early stages. We perform detailed numerical calculations to take account of the mixing effects. Interestingly, the initial misalignment angle of the QCD axion, which is usually a free parameter, is determined by the inflaton dynamics. It is found to be close to π in simple models. This is the realization of the pi-shift inflation proposed in previous literature, and it shows that QCD axion dark matter and inflation can be closely related. The heavy axion may be probed by future accelerator experiments.
Associations between R.E.N.A.L. nephrometry score and survival outcomes in renal tumours
Authors: Zhang Xue , Sun Qi , Qi Yangyang , Chen Yanyun , Xiong Ying , Xi Wei , Miao Zhongchang , Li Xiaoxia , Quan Xiaoling , Lin Jinglai 
Published: December 2023

Abstract

Objective
The radius-exophytic/endophytic-nearness-anterior/posterior-location nephrometry score could be used to predict surgical outcomes and renal tumour aggressiveness. We aimed to analyse its associations with survival outcomes.

Methods
We included 1368 patients with sporadic, unilateral and non-metastatic renal tumours who received curative nephrectomy in Zhongshan Hospital from January 2009 to September 2019. Radius-exophytic/endophytic-nearness-anterior/posterior-location nephrometry scores were assigned by three urologists based on preoperative CT/MRI scans. Correlations between parameters or sum of radius-exophytic/endophytic-nearness-anterior/posterior-location nephrometry scores, overall survival and recurrence-free survival were analysed by Kaplan–Meier analyses and the multivariate Cox regression model. We further compared survival outcomes between patients who received partial nephrectomy and patients who received radical nephrectomy.

Results
We observed statistically significant associations between all components of radius-exophytic/endophytic-nearness-anterior/posterior-location nephrometry scores and oncologic outcomes, including R (radius) (overall survival, P &lt; 0.001; recurrence-free survival , P &lt; 0.001), E (exophytic/endophytic) (overall survival, P = 0.003; recurrence-free survival, P &lt; 0.001), N (nearness) (overall survival, P = 0.063; recurrence-free survival, P &lt; 0.001), A (anterior/posterior) (overall survival, P &lt; 0.001; recurrence-free survival, P = 0.005), L (location) (overall survival, P = 0.008; recurrence-free survival, P &lt; 0.001) and suffix ‘h’ (overall survival, P = 0.237; recurrence-free survival, P = 0.034). Kaplan–Meier curves of overall survival and recurrence-free survival rates were significantly different when stratified by radius-exophytic/endophytic-nearness-anterior/posterior-location nephrometry score complexity group (overall survival, P &lt; 0.001; recurrence-free survival, P &lt; 0.001). After adjusting for tumour stage and grade, radius-exophytic/endophytic-nearness-anterior/posterior-location nephrometry score as continuous variables was an adverse independent risk factor for survival outcomes [P = 0.027, hazard ratio (95% confidence interval) = 1.151 (1.016–1.303)] and recurrence-free survival [P &lt; 0.001, hazard ratio (95% confidence interval) = 1.299 (1.125–1.501)]. For tumours with radius-exophytic/endophytic-nearness-anterior/posterior-location nephrometry scores of 4 and 5, partial nephrectomy showed a survival benefit than radical nephrectomy.

Conclusion
Both components and complexity groups of the radius-exophytic/endophytic-nearness-anterior/posterior-location nephrometry score are associated with survival outcomes in renal tumour patients.
Light curves from symmetric, polytropic contact binaries
Authors: Benvenuto O G , Blain A , Ferrero G A 
Published: December 2023

ABSTRACT
We study the structure of contact binaries assuming a polytropic relation between pressure and density, restricting ourselves to the case of equal-mass components, i.e. symmetric contact binaries. In this case, matter is at rest in the corotating reference frame making this problem far simpler than the general case of non-symmetric contact binaries. We compute these structures assuming values of the polytropic index of n = 0.0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, and 3.5 employing a self-consistent technique due to Hachisu. As a part of the results, we find the shape of their surfaces. While for the case of n = 3.5, such surfaces are very close to those corresponding to equipotentials of the restricted Lagrangian three-body problem, for lower n values the departure is remarkable. We propose a generalized function to fit these surfaces, which allows us to perform an accurate integration of the light curve due to the object. Then, for values of n &gt; 0.0 we computed a family of light curves considering different inclinations and values for the width of the neck connecting the components (or equivalently, the fillout factor) of the pair. We compare our calculations with the solution found for the symmetric contact binary V803 Aquilae by employing the popular phoebe code, that assumes the above-mentioned Lagrangian equipotential surfaces. We conclude that considering polytropic structures leads to parameters that may be appreciably different from those deduced by assuming that their surfaces correspond to equipotentials of the restricted three-body problem.
Design and assembly of the 117-kb Phaeodactylum tricornutum chloroplast genome
Authors: Walker Emma J L , Pampuch Mark , Chang Nelson , Cochrane Ryan R , Karas Bogumil J 
Published: December 2023

Abstract
There is growing impetus to expand the repertoire of chassis available to synthetic biologists. Chloroplast genomes present an interesting alternative for engineering photosynthetic eukaryotes; however, development of the chloroplast as a synthetic biology chassis has been limited by a lack of efficient techniques for whole-genome cloning and engineering. Here, we demonstrate two approaches for cloning the 117-kb Phaeodactylum tricornutum chloroplast genome that have 90% to 100% efficiency when screening as few as 10 yeast (Saccharomyces cerevisiae) colonies following yeast assembly. The first method reconstitutes the genome from PCR-amplified fragments, whereas the second method involves precloning these fragments into individual plasmids from which they can later be released. In both cases, overlapping fragments of the chloroplast genome and a cloning vector are homologously recombined into a singular contig through yeast assembly. The cloned chloroplast genome can be stably maintained and propagated within Escherichia coli, which provides an exciting opportunity for engineering a delivery mechanism for bringing DNA directly to the algal chloroplast. Also, one of the cloned genomes was designed to contain a single SapI site within the yeast URA3 (coding for orotidine-5′-phosphate decarboxylase) open-reading frame, which can be used to linearize the genome and integrate designer cassettes via golden-gate cloning or further iterations of yeast assembly. The methods presented here could be extrapolated to other species—particularly those with a similar chloroplast genome size and architecture (e.g. Thalassiosira pseudonana).
Pathways From Bullying Victimization to Suicidal Thoughts Among Urban African American Adolescents
Authors: Hong Jun Sung , Choi Jungtae , Lawrence Timothy I. , Yan Yueqi , Takahashi Lois M. , Voisin Dexter R. 
Published: December 2023

Abstract
The present study explores the relationship between bullying victimization and suicidal thoughts among African American adolescents in urban neighborhoods. The study, which was guided by the general strain theory, proposed and tested potential pathways that link bullying victimization with suicidal thoughts through the mediators including emotional distress, low future orientation, hopelessness, and drug use. The study sample included 414 African American adolescents who were between ages 12 and 22 years and residing in low-income Chicago's South Side neighborhoods. Descriptive statistics, bivariate correlation, and path analyses were conducted. Bullying victimization was not significantly related to suicidal thoughts, although it was positively associated with emotional distress and drug use. The association between low future orientation and hopelessness was bidirectional. The study findings have implications for practice, which is important as resources to assist adolescents who are affected by violence tend to be limited.
A Quality Improvement Project to Revise and Reduce Nursing Data Entry in a Pediatric Trauma Unit
Authors: Routly Maia , Gettis Margaret 
Published: December 2023

ABSTRACT
Meaningful direct nurse-patient interactions have been found to positively influence patient experiences and outcomes while increasing nurse satisfaction. Through redesigning a database, this process improvement project reduced nurse data entry time, allowing more opportunities for direct patient interactions. This project demonstrated that database redesign is a strategic action to decrease nurse data entry workload that can be used in hospital settings.
Analysis of a Needs Assessment Survey to Develop an Online Resource Repository Supporting Nurse Anesthesia Educators
Authors: Lee Rebecca , Bonanno Laura , O'Sullivan Cormac , Anderson Michael , Everson Marjorie , Moore Erica , O'Guin Crystal , Thompson Judy , Morgan Brett , Greenier Ewa , Pantone Gina 
Published: December 2023

Background:
Without highly qualified nurse anesthesia educators and administrators, the health care system will be threatened by the inadequate supply of certified registered nurse anesthetists (CRNAs).

Purpose:
American Association of Nurse Anesthesiologists’ Faculty Stabilization Task Force (FSTF) analyzed reasons for high faculty turnover and developed recommendations to support nurse anesthesia faculty and administrators.

Methods:
A survey evaluated participants’ current role, leadership development opportunities, mentorship experiences, and resource needs.

Results:
Of 109 respondents, 87 (80%) were program administrators or assistant administrators with less than 5 years of experience in their role. Despite academic experience, 51% felt adequately prepared for their role.

Conclusions:
The FSTF provided 2 recommendations: to create a robust faculty development program for all faculty at all levels of CRNA education and a repository of information needed for program administrators and faculty to oversee and educate students in a high-quality CRNA program.
Body Mass Index Is Associated With Myocutaneous Free Flap Reliability: Overcoming the Obesity Obstacle With a Proposed Clinical Algorithm to Identify and Manage High-Risk Patients Undergoing Gracilis Free Flap With Skin Paddle Harvest
Authors: Donnelly Megan R. , Noh Karen J. , Silverman Jeremy , Donnelly John H. , Azad Ali , Nicholas Rebecca , Reavey Patrick , Dane Bari , Hacquebord Jacques Henri 
Published: December 2023

Introduction
The purpose of this study was to evaluate the role of body mass index (BMI) in predicting postoperative complications following myocutaneous free flap transfer. In addition, we sought to identify certain body composition variables that may be used to stratify patients into low- versus high-risk for gracilis myocutaneous free flap with skin paddle failure.

Methods
Using the National Surgical Quality Improvement Program database, we collected data for all patients who underwent myocutaneous free flap transfer from 2015 to 2021. Demographic data, medical history, surgical characteristics, and postoperative outcomes, including complications, reoperations, and readmissions, were collected. Body mass index was correlated with outcome measures to determine its role in predicting myocutaneous free flap reliability. Subsequently, we retrospectively obtained measurements of perigracilis anatomy in patients who underwent computed tomography angiography bilateral lower extremity scans with intravenous contrast at our institution. We compared body composition data with mathematical equations calculating the potential area along the skin of the thigh within which the gracilis perforator may be found.

Results
Across the United States, 1549 patients underwent myocutaneous free flap transfer over the 7-year study period. Being in obesity class III (BMI ≥40 kg/m2) was associated with a 4-times greater risk of flap complications necessitating a return to the operating room compared with being within the normal BMI range. In our computed tomography angiography analysis, average perigracilis adipose thickness was 18.3 ± 8.0 mm. Adipose thickness had a strong, positive exponential relationship with the area of skin within which the perforator may be found.

Conclusions
In our study, higher BMI was associated with decreased myocutaneous free flap reliability. Specifically, inner thigh adipose thickness can be used to estimate the area along the skin within which the gracilis perforator may be found. This variable, along with BMI, can be used to identify patients who are considered high-risk for flap failure and who may benefit from additional postoperative monitoring, such as the use of a color flow Doppler probe and more frequent and prolonged skin paddle monitoring.