bluuebunny/crossref_metadata_2025_split huggingface dataset:
Maternal Blood Fatty Acid Levels in Fetal Growth Restriction
Authors: Grohmann Raquel Margiotte , Marçal Vivian Macedo Gomes , Corazza Isabela César , Peixoto Alberto Borges , Júnior Edward Araujo , Nardozza Luciano Marcondes Machado 
Published: April 2023

Abstract
Objective: To assess the maternal blood levels of fatty acids (FAs) in pregnancies with fetal growth restriction (FGR).
Methods: This prospective cross-sectional study included pregnant women with gestational age between 26 and 37 + 6 weeks with FGR and appropriate for gestational age (AGA) fetuses. The levels of saturated, trans, monounsaturated, and polyunsaturated FAs were measured using centrifugation and liquid chromatography. The Student's t-test, Mann–Whitney test, and general linear model, with gestational age and maternal weight as covariants, were used to compare FA levels and the FGR and AGA groups. The Chi-square was used to evaluate the association between groups and studied variables.
Results: Maternal blood sample was collected from 64 pregnant women, being 24 FGR and 40 AGA. A weak positive correlation was found between the palmitoleic acid level and maternal weight (r = 0.285, p = 0.036). A weak negative correlation was found between the gamma-linoleic acid level and gestational age (r = − 0.277, p = 0.026). The median of the elaidic acid level (2.3 vs. 4.7 ng/ml, p = 0.045) and gamma-linoleic acid (6.3 vs. 6.6 ng/ml, p = 0.024) was significantly lower in the FGR than the AGA group. The palmitoleic acid level was significantly higher in the FGR than AGA group (50.5 vs. 47.6 ng/ml, p = 0.033).
Conclusion: Pregnant women with FGR had lower elaidic acid and gamma-linoleic acid levels and higher palmitoleic acid levels than AGA fetuses.
Electrical Status Epilepticus during Sleep: Risk Factors, Clinical Course, and Treatment Approaches
Authors: Aleksandrova Iliyana , Asenova Asya , Dimova Petia , Deneva Daniela , Rodopska Elena , Slavkova Elena , Bojinova Veneta 
Published: April 2023

Abstract
Background The efforts of clinicians are focused on determining the predictors for electrical status epilepticus in sleep (ESES) manifestation, due to the negative effect of ESES on cognition. Treatment approaches remain a leading problem because of therapeutic resistance.
Objective We looked for potential risk factors for ESES manifestation and summarize the clinical course and therapeutic approaches in patients with idiopathic and symptomatic ESES.
Patients and Methods We retrospectively reviewed the medical data of 51 children with idiopathic ESES and 20 children with symptomatic ESES.
Results We observed an earlier age of seizure onset (p = 0.0002) and a higher percentage of cases with multiple seizures (p < 0.00001) and with postictal paralysis (p < 0.00001) in idiopathic ESES compared with childhood epilepsy with centrotemporal spikes. In the idiopathic ESES, the treatment consisted of corticosteroids in patients with permanent ESES remission and transient remission, levetiracetam (LEV) children with permanent ESES remission and transient, clonazepam (CZP) children with permanent ESES remission and transient, ethosuximide (ESM), and sulthiame. The patients with symptomatic ESES had more unfavorable evolution, as 19 children had persistent or relapsing ESES course.
Conclusion We consider the earlier age of seizure onset (below 5 years) and the presence of multiple seizures and postictal paresis as risk factors for ESES manifestation. ESES is characterized by a significant therapeutic resistance, especially in the group of symptomatic cases. Good results are observed with LEV, ESM, CZP, and steroids.
Assessing human emotional responses to the design of public spaces around subway stations: a human factors research
Authors: Yang Liu , Zhu Yuan , Chatzimichailidou Mikela , Liu Xiaoyun 
Published: April 2023

AbstractTransit-oriented development (TOD) is a powerful urban planning strategy to enhance sustainability and provide socioeconomic benefits for cities. The human-centered design of public spaces around subway stations is a critical issue in TOD. In this study, a socio-technical system-based perspective was adopted to investigate the impact of using different design strategies in public spaces around subway stations on human emotional responses. The novelty of this study lies in performing a human factors experiment to examine human emotional reactions to outdoor public spaces surrounding transit stations using a comprehensive method combining physiological assessment and subjective self-report. Thirty-four participants were recruited for the experiment, which was conducted at the catchment areas of two subway stations in Nanjing, China. Urban design characteristics related to open space enclosure and visual elements, natural elements, pedestrian access, surrounding buildings or walls, and land use and activities were tested in both semi-underground and above-ground public spaces. Additionally, human emotions were assessed using the pleasure, arousal, and dominance model and by investigating the four response systems that predominantly reflect people’s emotional states. These results led to design and policy suggestions that could assist practitioners and researchers in selecting relevant approaches for human-oriented and place-based TOD planning.
Graphical abstract
Development and characteristics study of compact Penning ion source
Authors: Murtaza Ghulam , Siddique Muhammad Tariq , Shakeel-ur-Rehman  
Published: April 2023

A compact-size Penning ion source with a small discharge volume (1.24 cm3) is developed. It consists of two concentric cylinders of different heights that act as cathodes and one hollow cylindrical anode. A homogeneous magnetic field is achieved within the discharge volume with geometrical optimization of the ion source. As a result, dense plasma is generated at low discharge power. The dynamics of the pulse mode discharge at low pulse width and frequency of anode voltage are studied. A high discharge (hundreds of amperes) current pulse with low delay time and fast rise time is recorded. The ion source is equally efficient to operate in continuous as well as pulse modes of ionization for various gases. It is operated in a wide range of low pressure at low anode voltage. An extraction system is designed to extract ions efficiently in the axial direction at a variable extraction voltage. The beam current of 200 µA in continuous mode and 6 A fast pulse in the pulsed mode of discharge have been measured. Variable beam current can be extracted with variable extraction voltage for any potential application.
Vertical detachment energies of ammonia cluster anions using self-interaction-corrected methods
Authors: Ufondu Peter , Chang Po-Hao , Baruah Tunna , Zope Rajendra R. 
Published: April 2023

Systems with weakly bound extra electrons impose great challenges to semilocal density functional approximations (DFAs), which suffer from self-interaction errors. Small ammonia clusters are one such example of weakly bound anions where the extra electron is weakly bound. We applied two self-interaction correction (SIC) schemes, viz., the well-known Perdew–Zunger and the recently developed locally scaled SIC (LSIC) with the local spin density approximation (LSDA), Perdew–Burke–Ernzerhof (PBE) generalized gradient approximation (GGA), and the SCAN meta-GGA functionals to calculate the vertical detachment energies (VDEs) of small ammonia cluster anions (NH3)n−. Our results show that the LSIC significantly reduces the errors in calculations of VDE with LSDA and PBE-GGA functionals leading to better agreement with the reference values calculated with coupled cluster singles and doubles with perturbative triples [CCSD(T)]. Accurate prediction of VDE as an absolute of the highest occupied molecular orbital (HOMO) is challenging for DFAs. Our results show that VDEs estimated from the negative of HOMO eigenvalues with the LSIC-LSDA and Perdew–Zunger SIC-PBE are within 11 meV of the reference CCSD(T) results. The LSIC method performs consistently well for the VDE estimates, from both the total energy differences and the absolute HOMO eigenvalues.
Construction of a 3D/2D heterojunction based on a fluorinated cyclohexylamine 2D Ruddlesden–Popper perovskite for highly efficient and stable perovskite solar cells
Authors: Xu Jinghua , Qiao Hongwei , Chen Zhongliang , Wang Xue-Lu , Yao Ye-Feng 
Published: April 2023

Nonradiative recombination at perovskite/charge transport layer interfaces is caused by surface defects and instability, and it is known to limit the long-term development of perovskite solar cells (PSCs). To overcome this issue, the three-dimensional/two-dimensional (3D/2D) perovskite heterojunction has emerged as a possible solution to improve the stabilities and efficiency of PSCs. Herein, we employ a simple one-step method to prepare n-i-p-structured PSCs using a 3D/2D perovskite heterojunction as the absorption layer. For this purpose, the large and non-centrosymmetric 4,4-difluorocyclohexylammonium (DFCHA+) cation, which has been confirmed to be a valid organic spacer in 2D Ruddlesden–Popper (RP) phase perovskites, is employed as an organic ligand for post-treatment of the surfaces of MAPbI3 films. The presence of an ultrathin 2D RP phase perovskite was confirmed on the surface, and the 3D/2D perovskite heterojunction was successfully constructed. Benefitting from surface post-treatment, the density of the surface trap states was reduced with effective passivation. In addition, nonradiative recombination was suppressed, and the interface bands were aligned. As a result, the optimal device achieved a power conversion efficiency of 21.93% with a remarkable open-circuit voltage (VOC) of 1.14 V, a current density (JSC) of 23.71 mA cm−2, and a fill factor of 0.82. Furthermore, owing to the hydrophobicity of the DFCHA+ cation, the unencapsulated device was able to maintain an initial efficiency of 82.3% after storage for 500 h at a relative humidity of ∼45%. We believe that this post-treatment strategy has wide application potential in the field of photovoltaic devices.
Near-infrared absorption of fused core-modified expanded porphyrins for dye-sensitized solar cells
Authors: Menéndez María Isabel , Montenegro-Pohlhammer Nicolas , Pino-Rios Ricardo , Urzúa-Leiva Rodrigo , Morales-Lovera Simone , Borges-Martínez Merlys , Granados-Tavera Kevin , López Ramón , Cárdenas-Jirón Gloria 
Published: April 2023

Photophysical, photovoltaic, and charge transport properties of fused core-modified expanded porphyrins containing two pyrroles, one dithienothiophene (DTT) unit, and 1–4 thiophenes (1–4) were inspected by using density functional theory (DFT) and time-dependent DFT. Compounds 1–3 have been investigated experimentally before, but 4 is a theoretical proposal whose photophysical features match those extrapolated from 1 to 3. They exhibit absorption in the range of 700–970 nm for their Q bands and 500–645 nm for their Soret bands. The rise of thiophene rings placed in front of the DTT unit in the expanded porphyrin ring causes a bathochromic shift of the longest absorption wavelength, leading to near-infrared absorptions, which represent 49% of the solar energy. All the systems show a thermodynamically favorable process for the electron injection from the dye to TiO2 and adsorption on a finite TiO2 model. The electron regeneration of the dye is only thermodynamically feasible for the smallest expanded porphyrins 1 and 2 when I−/I3− electrolyte is used. The charge transport study shows that for voltages lower than 0.4 V, junctions featuring pentaphyrin 1 and octaphyrin 4 are more conductive than those containing hexaphyrin 2 or heptaphyrin 3. The results showed that the four fused core-modified expanded porphyrins investigated are potential dyes for applications in dye-sensitized solar cells, mainly pentaphyrin 1 and hexaphyrin 2. Moreover, increasing the number of thiophene rings in the macrocycle proved fruitful in favoring absorption in the near-infrared region, which is highly desired for dye-sensitized solar cells.
Unraveling the decarboxylation dynamics of the fluorescein dianion with fragment action spectroscopy
Authors: Gibbard Jemma A. , Verlet Jan R. R. 
Published: April 2023

The decarboxylation dynamics of the doubly deprotonated fluorescein dianion, Fl2−, are investigated by recording fragment action spectra for the anion, Fl−, and its decarboxylated analog, Fl–CO2−, using a new reflectron secondary mass spectrometer. The formation of the anion, Fl−, is directly investigated by photoelectron imaging. The Fl− and Fl–CO2− action spectra indicate that, for λ &lt; 400 nm, one-photon dissociative photodetachment, i.e., simultaneous decarboxylation and electron loss, competes with photodetachment, whereas for λ &gt; 400 nm, decarboxylation only proceeds following electron loss via a sequential two-photon process. The primary decarboxylation pathway is the ready loss of CO2 from the relatively short-lived intermediate excited state, Fl−[D1], which is formed by electron loss from the dianion via resonant tunneling through the repulsive Coloumb barrier associated with a high-lying excited dianion state, Fl2−[S2].
Glass softening in the limit of high heating rates: Heterogeneous devitrification kinetics on nano, meso, and micrometer scale
Authors: Kaur Rinipal , Bhattacharya Deepanjan , Cubeta Ulyana S. , Sadtchenko Vlad 
Published: April 2023

When heated rapidly, glasses often devitrify heterogeneously, i.e., by a softening front that originates at the surface of an amorphous film. Yet the fundamentals of this devitrification regime are not completely understood; depending on experimental conditions, the reported front propagation distances differ by an order of magnitude. Using a high-resolution fast scanning calorimetry technique, we have investigated the softening of glassy methylbenzene films with thicknesses between 30 and 1400 nm. We confirm first that, in all films, the devitrification process begins with the formation of a softening front that propagates through the films over distances of ∼50 nm and that the front propagation kinetics at this stage follow an Arrhenius law. However, we also show that, in films with thicknesses above 165 nm, the front propagation does not terminate with the onset of bulk softening. Specifically, increasing the films’ thicknesses above 165 nm yields sharp, clearly discernible endotherms that precede the bulk softening endotherms and that are consistent with a two-fold increase in the enthalpic barrier to front propagation at a well-defined critical temperature. We term this phenomenon “Arrhenius discontinuity” and use reaction rate and continuum front dynamics theories to explain its origins and the physical nature of the resulting distinct heterogeneous devitrification processes. Finally, we discuss the findings in the context of recent theoretical, computational, and experimental studies of heterogeneous devitrification by other research groups.
M
1
-selective muscarinic allosteric modulation enhances cognitive flexibility and effective salience in nonhuman primates
Authors: Hassani Seyed A. , Neumann Adam , Russell Jason , Jones Carrie K. , Womelsdorf Thilo 
Published: April 2023

Acetylcholine (ACh) in cortical neural circuits mediates how selective attention is sustained in the presence of distractors and how flexible cognition adjusts to changing task demands. The cognitive domains of attention and cognitive flexibility might be differentially supported by the M
1
muscarinic acetylcholine receptor (mAChR) subtype. Understanding how M
1
mAChR mechanisms support these cognitive subdomains is of highest importance for advancing novel drug treatments for conditions with altered attention and reduced cognitive control including Alzheimer’s disease or schizophrenia. Here, we tested this question by assessing how the subtype-selective M
1
mAChR positive allosteric modulator (PAM) VU0453595 affects visual search and flexible reward learning in nonhuman primates. We found that allosteric potentiation of M
1
mAChRs enhanced flexible learning performance by improving extradimensional set shifting, reducing latent inhibition from previously experienced distractors and reducing response perseveration in the absence of adverse side effects. These procognitive effects occurred in the absence of apparent changes of attentional performance during visual search. In contrast, nonselective ACh modulation using the acetylcholinesterase inhibitor (AChEI) donepezil improved attention during visual search at doses that did not alter cognitive flexibility and that already triggered gastrointestinal cholinergic side effects. These findings illustrate that M
1
mAChR positive allosteric modulation enhances cognitive flexibility without affecting attentional filtering of distraction, consistent with M
1
activity boosting the effective salience of relevant over irrelevant objects specifically during learning. These results suggest that M
1
PAMs are versatile compounds for enhancing cognitive flexibility in disorders spanning schizophrenia and Alzheimer’s diseases.
Generalised spectral dimensions in non-perturbative quantum gravity
Authors: Reitz M , Németh D , Rajbhandari D , Görlich A , Gizbert-Studnicki J 
Published: April 2023

Abstract
The seemingly universal phenomenon of scale-dependent effective dimensions in non-perturbative theories of quantum gravity has been shown to be a potential source of quantum gravity phenomenology. The scale-dependent effective dimension from quantum gravity has only been considered for scalar fields. It is, however, possible that the non-manifold like structures, that are expected to appear near the Planck scale, have an effective dimension that depends on the type of field under consideration. To investigate this question, we have studied the spectral dimension associated to the Laplace–Beltrami operator generalised to k-form fields on spatial slices of the non-perturbative model of quantum gravity known as causal dynamical triangulations. We have found that the two-form, tensor and dual scalar spectral dimensions exhibit a flow between two scales at which an effective dimension appears. However, the one-form and vector spectral dimensions show only a single effective dimension. The fact that the one-form and vector spectral dimension do not show a flow of the effective dimension can potentially be related to the absence of a dispersion relation for the electromagnetic field, but dynamically generated instead of as an assumption.
Two ground-state bright solitons in fractional-order spin–orbit-coupled Bose–Einstein condensates
Authors: Bao Y Y , Li S R , Liu Y H , Xu T F 
Published: April 2023

Abstract
We study two types of bright solitons in zero and non-zero detuning spin–orbit-coupled (SOC) Bose–Einstein condensates in fractional effect by variational and imaginary-time evolution method. The results show that the variation of SOC with fractional kinetic energy operator affects the existence and form of solitons. In particular, we found that SOC strength

γ
=
1.0

could be a transition point. In other words, for

γ
<
1.0

and

γ
⩾
1.0

, the soliton states and pseudo-spin polarization in non-zero detuning show opposite changes. In addition, moving bright solitons with zero and non-zero detuning are studied.
Classification and identification of mixed gases based on the combination of semiconductor sensor array with SSA-BP neural network
Authors: Li Meihua , Gu Yunlong , Ge Shikun , Zhang Yunfan , Mou Chao , Zhu Huichao , Wei Guangfen 
Published: April 2023

Abstract
In this paper, pure

Sn

O

2

,

Cu/Sn

O

2

, ZnO and Cu/ZnO gas sensitive materials were synthesized by a simple hydrothermal reaction and used to prepare a gas sensor array. The morphological structure and composition of the synthesized materials were characterized using SEM and XRD, respectively. The sensor array was combined with the back propagation neural network algorithm optimized by the sparrow search algorithm (SSA-BPNN) and applied to effectively identify the types of mixed toxic gases in the room, including formaldehyde, ammonia and xylene. The combination of sensor array with optimized neural network algorithms achieved a good classification result for gas mixture and the classification accuracy can reach 93.45% for different classes of mixtures composed of three gases (formaldehyde, ammonia, and xylene). Therefore, the sensor array combined with the SSA-BP algorithm in this study has done a good work in the qualitative identification of ternary gas mixtures and has some application potential.
Transient dynamics of the field induced force in the isotropic magnetorheological elastomer
Authors: Kubík M , Borin D , Odenbach S 
Published: April 2023

Abstract
The transition dynamics in silicon rubber based isotropic magnetorheological (MR) elastomers in terms of the normal force induced by an external homogeneous magnetic field is experimentally addressed. The primary goal was to evaluate dynamic performances of the MR elastic isotropic composite using a transparently presented measuring system with known characteristics in contrast to few previous studies on the topic. It was found that an increase in the magnetic field leads to an increase in the induced force and a decrease in the response time of the MR elastomer. At the same time, both the use of coarse particles as magnetic filler and a significant reduction in the stiffness of the polymer matrix reduce the response time of the MR elastomer under study. The analysis carried out takes into account the dynamics of the electromagnetic coil and the eddy currents induced in the magnet circuit. The shortest response times obtained for various MR elastomer samples are in the range of 27–72 ms for the maximal used magnetic field with an induction of 230 mT. These times correspond to the fastest previously reported ones for MR elastomers and MR elastomer based systems. In addition, the obtained results indicate the presence of different mechanisms responsible for the measured magnetodeformational effect observed in MR elastomers.
Identifying the structure patterns to govern the performance of localization in regulating innovation diffusion
Authors: Xue Leyang , Cui Peng-Bi , Di Zengru 
Published: April 2023

Abstract
The macro social influence is recognized as a non-negligible ingredient in innovation propagation: more adopters in the network lead to a higher adoption tendency for the rest individuals. A recent study to incorporate such a crucial mechanism shows that sufficient intensity of macro-level social influence can cause a change from a continuous to discontinuous transition, further indicating the existence of a tricritical point. Although network localization strength determines the tricritical point, it remains unclear what network quantities govern the performance of localization in regulating innovation diffusion. To address this issue, we herein consider the model incorporating both the micro- and macro-levels social influence. We present a dynamic message-passing method to analytically treat both the outbreak threshold and recovered population, and validate the predictions through agent-based simulations. Extensive analysis on the classical synthetic networks shows that sparsely available connections, and relatively heterogeneous degree distribution, either assortative or extremely disassortative configurations are favorable for continuous transition. In such cases, the employed network can yield a strong localization effect so that the innovation is trapped in the configurations composed of the hubs with high non-backtracking centrality. We further explore the dependence of both tricritical point and localization strength on three structural quantities: network density, heterogeneity, and assortativity, which gives a clear physical picture of the joint effects of the three structure quantities on the localization strength. Finally, we conclude that the core-periphery structure, being sensitive to the change of the three structure quantities, essentially determines localization strength, and further regulates the phase transition.