bluuebunny/crossref_metadata_2025_split huggingface dataset:
First Trimester Contingent Screening for Aneuploidies with Cell-Free Fetal DNA in Singleton Pregnancies – a Swiss Single Centre Experience
Authors: Proto Alice , Trottmann Fabienne , Schneider Sophie , Amylidi-Mohr Sofia , Badiqué Florent , Risch Lorenz , Surbek Daniel , Raio Luigi , Mosimann Beatrice 
Published: January 2024

AbstractSwitzerland was amongst the first countries to offer cell-free fetal DNA (cffDNA) testing covered by the health insurance to pregnant women with a risk ≥ 1:1000 for trisomies at first trimester combined screening (FTCS). The aim of this study is to evaluate the implementation of this contingent model in a single tertiary referral centre and its effect on gestational age at diagnosing trisomy 21.Between July 2015 and December 2020 all singleton pregnancies at 11–14 weeks of gestation without major fetal malformation were included and stratified according to their risk at FTCS. Statistical analysis was performed by GraphPad Version 9.1 for Windows.4424 pregnancies were included. Of 166 (3.8%) pregnancies with a NT ≥ 3.5 mm and/or a risk ≥ 1:10 at FCTS, 130 (78.3%) opted for direct invasive testing. 803 (18.2%) pregnancies had an intermediate risk, 692 (86.2%) of them opted for cffDNA first. 3455 (78.1%) pregnancies had a risk < 1:1000. 63 fetuses were diagnosed with trisomy 21, 47 (74.6%) directly by invasive procedures after FTCS, 16 (25.4%) by cffDNA first.Most women choose cffDNA or invasive testing as second tier according to national guidelines. Despite the delay associated with cffDNA testing after FCTS, 75% of all trisomy 21 are still diagnosed in the first trimester with this contingent screening model.
Photoredox-Catalyzed C(sp3)–H Difluoroallylation of Amides
Authors: Huo Haohua , Lin Yanmei , Shu Xiaomin 
Published: January 2024

AbstractA photoredox-catalyzed, bromine-radical-mediated C(sp3)–H difluoroallylation of amides is disclosed. This modular approach exploits the hydrogen atom transfer (HAT) ability of photooxidatively generated bromine radicals to convert both cyclic and acyclic amides into the corresponding α-amino alkyl radicals that then are coupled with readily available trifluoromethyl alkenes. This method is distinguished by its mild conditions, broad substrate scope (30 examples), and the use of a simple HAT reagent, namely sodium bromide (NaBr). This strategy offers a promising paradigm for the incorporation of carbonyl isosteres into saturated aliphatic amines.
Undocumented immigrants at work: invisibility, hypervisibility, and the making of the modern slave
Authors: Segarra Paulina , Prasad Ajnesh 
Published: January 2024

AbstractThe undocumented immigrant represents a socio-legal category, referring to a subject who does not have legal standing to be in the country in which they are located. Extending from their lack of legal standing, undocumented immigrant workers in the United States occupy spaces marked by extreme conditions of vulnerability, which were exacerbated by the election of Donald Trump as president in 2016. The aim of this ethnographic study is to make sense of the experiences of undocumented immigrants under a particularly vicious political rhetoric. Studying the lives of Latinx undocumented immigrant workers in the U.S., our findings capture how the dynamic interplay between the types of labor that they undertake and the socio-legal identity they are attributed function together to systematically disenfranchise them. Specifically, we explicate how doing invisible labor while, at the same time, occupying a hypervisible identity culminates in extreme conditions of vulnerability. In addition to developing the concept of hypervisible identity, we also inform theory on the idea of modern slavery. We contend that without the existence of invisible labor and hypervisible identity performing as interlocking, constitutive precursors, some forms of modern slavery would be negated.
Effective public health messaging for university students: lessons learned to increase adherence to safety guidelines during a pandemic
Authors: Milich Krista M. , Fisher Natalie , Sobral Gisela 
Published: January 2024

AbstractVariation in compliance with recommended safety behaviors early in the COVID-19 pandemic was especially concerning in places where people aggregated after traveling from a range of geographical areas, such as many universities. Understanding variation in these behaviors is important for continuing to address the COVID-19 pandemic and planning for future disease outbreaks. We examined the relationship between safety behaviors, risk perception, COVID-19-related knowledge, and information sources among university students during the Fall 2020 semester. A person’s preferred information sources were associated with differences in knowledge, risk perception, and protective behaviors. Furthermore, people with higher COVID knowledge practiced more protective behaviors. Providing reliable information can reduce harm during future global health crises, particularly at universities where interventions on campus can also protect the larger community, as spillover from universities has impacted the most vulnerable members of the surrounding communities. Our study adds to public health literature on factors influencing personal behaviors.
Networked framing of GMO risks and discussion fragmentation on Chinese social media: a dynamic perspective
Authors: Cheng Xiaoxiao 
Published: January 2024

AbstractGenetically modified organisms (GMOs) have been highly controversial in China and beyond. The burgeoning of social media has created an online activist field where participants utilize networked framing practices to engage in connective actions related to GMO risks. However, a dynamic perspective on the co-production of GMO risk discourses has yet to be fully explored, and it is still under debate whether such a collective interpretation is fragmented. To address this gap, this study investigates the risk-invoked GMO controversy by longitudinally exploring the structural characteristics and discursive power structures in the networked framing of GMO risks on social media. This study examines 356,227 GMO risk posts from 2010 to 2020 on the Chinese social media platformWeibo. A longitudinal social network analysis and computational text-mining approach are used to construct representation networks among participants based on their joint sponsorship framing practices of GMO risks. The findings suggest that there is a multipolar discussion fragmentation in the networked framing of GMO risks. However, the temporal evidence shows that the risk discussion has become increasingly interconnected and less structurally fragmented over time. In addition, this study highlights the unequal distribution of discursive power among participants; nevertheless, the analysis reveals that this inequality has shown signs of easing over the study period. Overall, this study provides a comprehensive analysis of the GMO controversy from a risk perspective and sheds light on the dynamics of networked framing practices and discursive power structures on social media.
Effect of digital literacy on social entrepreneurial intentions and nascent behaviours among students and practitioners in mass communication
Authors: Ip Ching Yin 
Published: January 2024

AbstractBecause journalism and mass communication have changed dramatically in the digital era, exploring alternative career paths for students and practitioners in mass communication may offer valuable insights for the future of the field. Considering the emphasis on decent work opportunities and responsible production practices outlined in the Sustainable Development Goals, this study evaluates the determinants of social entrepreneurial intentions and behaviours of students and practitioners of mass communication in Taiwan. A quantitative survey method is adopted. In total, 814 participants, consisting of 373 students and 441 practitioners, provided valid responses, which were analysed utilising structural equation modelling. The results in both samples indicate positive direct effects of perceived social support, perceived social awareness of peers, and digital literacy on social entrepreneurial intentions, and positive direct effects of digital literacy and social entrepreneurial intentions on social entrepreneurial behaviours. The study identifies digital literacy as a critical element for fostering social entrepreneurial intentions and behaviours. Moreover, educational implications and suggestions are also provided.
‘Until’ constructions and expletive negation in Huasteca Nahuatl
Authors: Olguin Martinez Jesus 
Published: January 2024

Abstract
A number of works have explored expletive negation in clause-linkage constructions. Most of them have shown that
this type of negative marker can be omitted from the adverbial clause without affecting the interpretation holding between
clauses. The study shows, based on the analysis of natural discourse data, that expletive negation has developed an intriguing
discourse function in three types of ‘until’ constructions in Huasteca Nahuatl: ‘not…until’ constructions, scalar additive ‘until’
constructions, and beginning-to-end constructions. When the negative marker amo appears in the ‘until’ clause,
the proposition should be characterized as expressing surprise. When it is absent from the ‘until’ clause, the proposition does
not express surprise. This function of the expletive negative marker amo does not appear in elicited sentences,
but only in spontaneous speech. It is proposed that Huasteca Nahuatl developed expletive negation in ‘not…until’ constructions due
to contact with Spanish. However, the development of expletive negation in scalar additive ‘until’ constructions and
beginning-to-end constructions is an internally motivated development in Huasteca Nahuatl that cannot be attributed to
Spanish.
Electron and ion emission characteristics of metal irradiated by nanosecond laser
Authors: Sun Guoxiang , Nie Shaohao , Wang Xia , Ding Weidong , Yuan Qi , Yan Jiaqi 
Published: January 2024

Abstract
Clarifying the electron and ion emission characteristics of metals irradiated by nanosecond focused laser in low pressure environment is crucial for improving applications based on laser-produced plasmas. This paper investigates the emission characteristics through electrical and optical diagnosis. The emission process is investigated through joint analysis of electrons and ions behavior, and relevant influencing factors are studied. The emission process of electrons and ions is divided into four stages, characterized by the arrival of prompt electrons e1, ultrafast electrons e2/ions i1, fast ions i2 and thermal electrons e3/ions i3, respectively. e1 is mainly related to thermal emission and photoemission, which can be improved by high electric field, gas pressure (within a certain range), laser energy and melting boiling points of target. e2/e3 and i1/i2/i3 mainly originate from laser ablation, and their expansion process follows obvious bipolar diffusion characteristics, while the latter is related to the different mass and charge states of the ions. The amplitude of i2 and e3 can be improved by using low density and melting point metals, and they are easily blocked by background gas, almost independent of the weak electric field.
Macro-dipoles in soft/hard expanded-polytetrafluoroethylene + fluoroethylenepropylene (ePTFE + FEP) fluoropolymer-film systems for high-output piezoelectric ferroelectret-transducer applications
Authors: Wang Ningzhen , Baferani Mohamadreza Arab , Daniels Robert , Wu Chao , Huo Jindong , van Turnhout Jan , Sotzing Gregory A , Gerhard Reimund , Cao Yang 
Published: January 2024

Abstract
Multi-layer ferroelectrets consisting of fluoroethylenepropylene (FEP) copolymer and open-porous expanded polytetrafluoroethylene (ePTFE) films exhibit stable internal electret charges, high piezoelectric coefficients and heat resistance, making them promising candidates for wearable sensors or nanogenerators in body-area networks. Here, three- and five-layer (FEP/ePTFE/FEP and FEP/ePTFE/FEP/ePTFE/FEP) ferroelectret stacks were laminated and poled in a corona discharge. The resulting charge distributions were measured by use of the pulsed electro-acoustic (PEA) method and revealed that charges of opposite polarity were trapped at the interfaces between the FEP and ePTFE layers. Thus, the existence of one macro-dipole in the three-layer structure and of two macro-dipoles in the five-layer structure was directly shown for the first time. Moreover, electric-displacement-versus-electric-field (D-E) loops revealed that remnant polarization is given by the number of macro-dipoles in the respective stack. Due to the addition of the macro-dipoles, the piezoelectric d
33 coefficient of the FEP/ePTFE/FEP/ePTFE/FEP stack reaches 200 pC/N even under a potentially non-uniform compression of the soft ePTFE layers. The results should be useful for a better understanding and a performance optimization of ferroelectrets in self-powered intelligent devices.
Polarization image fusion method with image enhancement
Authors: Wang Chenguang , Ma Ruyue , Yan Deli , Cao Huiliang , Shen Chong 
Published: January 2024

Abstract
Because of their complementary characteristics, intensity images and polarization images are often fused to produce information-rich images. However, the polarization characteristics are easily affected by the object’s environment, and the image fusion process may lose important information. In this paper, we propose an unsupervised end-to-end network framework based on a CNN for intensity images and degree of linear polarization images. First, we construct our own polarization dataset to solve the limitations of the training dataset; a hybrid loss function is designed to form an unsupervised learning process; and a Laplace operator enhancement layer is introduced into the network to further improve the quality of the fused images. Subjective and objective comparison experiments prove that the proposed fusion network is visually superior to several classical fusion methods.
Monolayer WS2 electro- and photo-luminescence enhancement by TFSI treatment
Authors: Cadore A R , Rosa B L T , Paradisanos I , Mignuzzi S , De Fazio D , Alexeev E M , Dagkli A , Muench J E , Kakavelakis G , Shinde S M , Yoon D , Tongay S , Watanabe K , Taniguchi T , Lidorikis E , Goykhman I , Soavi G , Ferrari A C 
Published: January 2024

Abstract
Layered material heterostructures (LMHs) can be used to fabricate electroluminescent devices operating in the visible spectral region. A major advantage of LMH-based light emitting diodes (LEDs) is that electroluminescence (EL) emission can be tuned across that of different exciton complexes (e.g. biexcitons, trions, quintons) by controlling the charge density. However, these devices have an EL quantum efficiency as low as ∼10−4%. Here, we show that the superacid bis-(triuoromethane)sulfonimide (TFSI) treatment of monolayer WS2-LEDs boosts EL quantum efficiency by over one order of magnitude at room temperature. Non-treated devices emit light mainly from negatively charged excitons, while the emission in treated ones predominantly involves radiative recombination of neutral excitons. This paves the way to tunable and efficient LMH-based LEDs.
Control of stripe, skyrmion and skyrmionium formation in the 2D magnet
Fe3−xGeTe2
by varying composition
Authors: Birch Max T , Powalla Lukas , Litzius Kai , Nehruji Vanessa , Hovorka Ondrej , Wintz Sebastian , Schulz Frank , Mayoh Daniel A , Balakrishnan Geetha , Weigand Markus , Burghard Marko , Schütz Gisela 
Published: January 2024

Abstract
Two-dimensional (2D) van der Waals (vdW) magnets have recently emerged as novel skyrmion hosts. This discovery has opened a new material platform for tuning the properties of topological spin textures, such as by exploiting proximity effects induced by stacking of 2D materials into heterostructures, or by directly manipulating the structural composition of the host material. Previous works have considered the effect of varied composition in the bulk crystals of the vdW magnet

F
e

3
−
x

G
e
T
e

2

, but so far the effects on the hosted spin textures have not been thoroughly investigated. In this work, real-space x-ray microscopy is utilized to image magnetic stripe domain, skyrmion and composite skyrmion states in exfoliated flakes of

F
e

3
−
x

G
e
T
e

2

with varying Fe deficiency x. In combination with supporting mean-field and micromagnetic simulations, the significant alterations in the magnetic phase diagrams of the flakes, and thus the stability of the observed spin textures, are revealed. These arise as a result of the varying temperature dependence of the fundamental magnetic properties, which are greater than can be explained by the removal of spins, and are consistent with previously reported changes in the electronic band structure via the Fe deficiency.
Exploring graphene-substrate interactions: plasmonic excitation in Sn-intercalated epitaxial graphene
Authors: Mamiyev Zamin , Tegenkamp Christoph 
Published: January 2024

Abstract
Graphene plasmons, including those in intercalated graphene, are an important research focus, with the promise of enabling light manipulation and providing a unique platform for gaining fundamental insights into many-body electronic interactions. In the present work, we discuss the results of low-energy plasmonic excitations in epitaxial quasi-free monolayer graphene formed by intercalation of Sn beneath the buffer layer (BL) on 4 H-SiC(0001). The quantitative analysis of the sheet plasmon dispersion revealed that the Sn-induced (

1
×
1

) interface is metallic and results in formation of charge-neutral graphene. A redshift of the 2D plasmon was found, but only after doping with potassium. The Sn-diluted interface, revealing a (

3

×

3

) reconstruction and resulting in intrinsically n-type doped graphene, behaves comparably to the BL for epitaxial monolayer graphene (MLG). Furthermore, it seems that a dipolar coupling of the longitudinal charge density fluctuations in graphene to the interface layer triggers the formation and the loss energy of a plasmonic multipole component, which therefore makes it suitable for studying proximity effects of excitations in electronically weakly coupled 2D heterosystems.
Optimization of parameters for the best shot peening effect based on surface response and neural network model
Authors: Wang Chengan , Kim Taehyung 
Published: January 2024

Abstract
To optimize the peening effect of different shot peening process parameters on metal surfaces, the mapping relationship between different shot peening process parameters and metal surface integrity was obtained. In this paper, ABAQUS software was used to establish a DE-FE (Discrete element-Finite element) random multi-shot analysis model to simulate shot peening, then optimize the shot peening process parameters based on the surface response method(RSM), and finally validate it through experiments and BP(back propagation) neural network model. The result shows that when the shot velocity is 70 m s−1, the impact angle of shot is 61.45°, and the shot diameter is 0.78 mm, the shot peening effect is the best, the surface roughness value is reduced by 101.84%, and the arc height value is increased by 54.66%; the error between the predicted results of BP neural network and the results of numerical analysis is less than 8%. Therefore, the optimized process parameters significantly improve the shot peening effect, but also shows that the BP neural network prediction model can more accurately predict the mapping relationship between the input parameters of shot velocity, shot diameter, and impact angle of shot and the output parameters of roughness value and arc height value.
Characteristics of polypropylene-based antistatic bio-nano composites reinforced with mono-diacylglycerols and cellulose nanocrystals
Authors: Setyaningsih Dwi , Sarfat Muhammad Syukur , Fahma Farah , Indrasti Nastiti Siswi 
Published: January 2024

Abstract
Polypropylene (PP) is known as a polymer without antistatic properties that is susceptible to the use of high temperatures. Therefore, to improve the thermal and antistatic properties of PP, it is necessary to modify PP to antistatic bio-nanocomposites with mono-diacylglycerols (M-DAG) as an antistatic agent and cellulose nanocrystals (CNC) as a reinforcement. This research aimed to characterize the electrical resistivity and thermal properties of PP-based antistatic bio-nanocomposites reinforced with M-DAG and CNC at different concentrations of CNC (0%–5%), and 2% of M- DAG, compared to pure PP. The results showed that the addition of 2% CNC (AS-BNC-2) gave the melting temperature of 125.0 °C, which was higher than pure PP of 118.3 °C. The thermal stability of the antistatic bio-nano composites with 3% CNC (AS-BNC-3) was 457.10 °C, which was higher than pure PP of 441.56 °C. The electrical resistivity of the antistatic bio-nano composites from all treatments was still in the range of the antistatic category of 1010–1012 Ω/sq. The melting temperature and thermal stability of bio-nano composites were higher than those of pure PP and they have antistatic properties. This indicates the potential application of these materials in the electronics devices and packaging industries.
A trace Trudinger-Moser inequality involving 𝐿^{𝑝}-norm on a compact Riemann surface with boundary
Authors: Zhang Mengjie 
Published: January 2024

In this paper, using the method of blow-up analysis, we establish a trace Trudinger-Moser inequality involving

L
p

L^p

-norm and obtain the corresponding extremal on a compact Riemann surface with a smooth boundary. The result generalizes those of Li-Liu [Math. Z. 250 (2005), pp. 363–686] and Zhang [Commun. Pure Appl. Anal. 20 (2021), pp. 1721–1735].
Positive intermediate curvatures and Ricci flow
Authors: González-Álvaro David , Zarei Masoumeh 
Published: January 2024

We show that, for any

n
≥
2

n\geq 2

, there exists a homogeneous space of dimension

d
=
8
n
−
4

d=8n-4

with metrics of

R
i

c

d
2

−
5

>
0

Ric_{\frac {d}{2}-5}>0

if

n
≠
3

n\neq 3

and

R
i

c
6

>
0

Ric_6>0

if

n
=
3

n=3

which evolve under the Ricci flow to metrics whose Ricci tensor is not

(
d
−
4
)

(d-4)

-positive. Consequently, Ricci flow does not preserve a range of curvature conditions that interpolate between positive sectional and positive scalar curvature. This extends a theorem of Böhm and Wilking [Geom. Funct. Anal. 17 (2007), pp. 665–681] in the case of

n
=
2

n=2

.
Lipid- and phospho-regulation of CTP:Phosphocholine Cytidylyltransferase α association with nuclear lipid droplets
Authors: Foster Jason , McPhee Michael , Yue Lambert , Dellaire Graham , Pelech Steven , Ridgway Neale D. 
Published: January 2024

Fatty acids stored in triacylglycerol-rich lipid droplets are assembled with a surface monolayer composed primarily of phosphatidylcholine (PC). Fatty acids stimulate PC synthesis by translocating CTP:phosphocholine cytidylyltransferase (CCT) α to the inner nuclear membrane, nuclear lipid droplets (nLD) and lipid associated promyelocytic leukemia (PML) structures (LAPS). Huh7 cells were used to identify how CCTα translocation onto these nuclear structures are regulated by fatty acids and phosphorylation of its serine-rich P-domain. Oleate treatment of Huh7 cells increased nLDs and LAPS that became progressively enriched in CCTα. In cells expressing the phosphatidic acid phosphatase Lipin1α or 1β, the expanded pool of nLDs and LAPS had a proportional increase in associated CCTα. In contrast, palmitate induced few nLDs and LAPS and inhibited the oleate-dependent translocation of CCTα without affecting total nLDs. Phospho-memetic or phospho-null mutations in the P-domain revealed that a 70% phosphorylation threshold, rather than site-specific phosphorylation, regulated CCTα association with nLDs and LAPS. In vitro candidate kinase and inhibitor studies in Huh7 cells identified cyclin-dependent kinase (CDK) 1 and 2 as putative P-domain kinases. In conclusion, CCTα translocation onto nLDs and LAPS is dependent on available surface area and fatty acid composition, as well as threshold phosphorylation of the P-domain potentially involving CDKs.