bluuebunny/crossref_metadata_2025_split huggingface dataset:
Graphite crucible interaction with Fe–Si–B phase change material in pilot-scale experiments
Authors: Jiao Jianmeng , Jayakumari Sethulakshmy , Wallin Maria , Tangstad Merete 
Published: September 2023

Abstract
Fe–26Si–9B alloy is a promising high temperature phase change material (HTPCM), due to its high heat of fusion, small volumetric change, abundance, and low cost. Additionally, graphite has been identified as a promising candidate for use as a container material for this alloy. In this study, the feasibility of using graphite for Fe–26Si–9B HTPCM is investigated in a pilot-scale. Specifically, 4–5 kg Fe–26Si–9B master alloys were melted in graphite crucibles using an induction furnace, which underwent 2–3 thermal cycles in the temperature range of 1,100–1,375°C. The results showed that SiC and B4C precipitates were formed in the alloys. However, these carbides were found to be present only on the surface of the solidified alloys and not in the main body. Still, the chemical composition of the Fe–26Si–9B alloy remained relatively stable during the thermal cycles. It was also seen that the graphite crucible withstood the temperature cycles without cracking. Therefore, the use of graphite as a container for Fe–26Si–9B phase change material is a promising approach.
Animated satire and collective memory: reflecting on the American “history wars” with The Simpsons
Authors: Hellmann Olli 
Published: September 2023

Abstract
Driven by the knowledge that how societies remember their past matters in the present, the field of collective memory studies has paid significant attention to the media’s role in contributing to the production of socially shared representations of history. The genre of satire, however, has so far remained largely neglected. My paper addresses this gap and argues that, compared to other forms of media, satire not only adds to the production of memories, but it also offers distinct rhetorical techniques to encourage audiences to reflect on the construction and maintenance of collective memories. I develop the argument about satire’s memory-reflexive function through a case study of how The Simpsons – by deploying the fictional persona of Jebediah Springfield as a metaphor of the Founding Fathers – critically comments on America’s hyper-polarized “history wars” between conservatives and liberals. I argue that animated satire is a particularly powerful vehicle for reflection on collective memory, not only because it subverts audience expectations, but also because the unlimited storytelling potential of animation makes it possible to imitate the politics of collective remembering with a high degree of realism.
Multiplicity of solutions for a class of critical Schrödinger-Poisson systems on the Heisenberg group
Authors: Li Shiqi , Song Yueqiang 
Published: September 2023

Abstract
We deal with multiplicity of solutions to the following Schrödinger-Poisson-type system in this article:

Δ

H

u
−

μ

1

ϕ

1

u
=

∣
u
∣

2

u
+

F

u

(

ξ
,
u
,
v

)

,

in

Ω
,

−

Δ

H

v
+

μ

2

ϕ

2

v
=

∣
v
∣

2

v
+

F

v

(

ξ
,
u
,
v

)

,

in

Ω
,

−

Δ

H

ϕ

1

=

u

2

,

−

Δ

H

ϕ

2

=

v

2

,

in

Ω
,

ϕ

1

=

ϕ

2

=
u
=
v
=
0
,

on

∂
Ω
,

\left\{\begin{array}{ll}{\Delta }_{H}u-{\mu }_{1}{\phi }_{1}u={| u| }^{2}u+{F}_{u}\left(\xi ,u,v),\hspace{1.0em}& \hspace{0.1em}\text{in}\hspace{0.1em}\hspace{0.33em}\Omega ,\\ -{\Delta }_{H}v+{\mu }_{2}{\phi }_{2}v={| v| }^{2}v+{F}_{v}\left(\xi ,u,v),\hspace{1.0em}& \hspace{0.1em}\text{in}\hspace{0.1em}\hspace{0.33em}\Omega ,\\ -{\Delta }_{H}{\phi }_{1}={u}^{2},\hspace{1.0em}-{\Delta }_{H}{\phi }_{2}={v}^{2},\hspace{1.0em}& \hspace{0.1em}\text{in}\hspace{0.1em}\hspace{0.33em}\Omega ,\\ {\phi }_{1}={\phi }_{2}=u=v=0,\hspace{1.0em}& \hspace{0.1em}\text{on}\hspace{0.1em}\hspace{0.33em}\partial \Omega ,\end{array}\right.

where

Δ

H

{\Delta }_{H}

is the Kohn-Laplacian and

Ω

\Omega

is a smooth bounded region on the first Heisenberg group

H

1

{{\mathbb{H}}}^{1}

,

μ

1

{\mu }_{1}

, and

μ

2

{\mu }_{2}

are some real parameters, and

F
=
F

(

x
,
u
,
v

)

,

F

u

=

∂
F

∂
u

F=F\left(x,u,v),{F}_{u}=\frac{\partial F}{\partial u}

,

F

v

=

∂
F

∂
u

{F}_{v}=\frac{\partial F}{\partial u}

satisfying natural growth conditions. By the limit index theory and the concentration compactness principles, we prove that the aforementioned system has multiplicity of solutions for

μ

1

,

μ

2

<

∣
Ω
∣

−

1

2

S

{\mu }_{1},{\mu }_{2}\lt {| \Omega | }^{-\tfrac{1}{2}}S

, where

S

S

is the best Sobolev constant. The novelties of this article are the presence of critical nonlinear term, and the system is set on the Heisenberg group.
Construction of a ceRNA network to reveal a vascular invasion associated prognostic model in hepatocellular carcinoma
Authors: Liu Yun , Yang Lu , Yu Mengsi , Huang Fen , Zeng Jiangzheng , Lu Yanda , Yang Changcheng 
Published: September 2023

Abstract
The aim of this study is to explore the prognostic value of vascular invasion (VI) in hepatocellular carcinoma (HCC) by searching for competing endogenous RNAs (ceRNA) network and constructing a new prognostic model for HCC. The differentially expressed genes (DEGs) between HCC and normal tissues were identified from GEO and TCGA. StarBase and miRanda prediction tools were applied to construct a circRNA-miRNA-mRNA network. The DEGs between HCC with and without VI were also identified. Then, the hub genes were screened to build a prognostic risk score model through the method of least absolute shrinkage and selection operator. The prognostic ability of the model was assessed using the Kaplan−Meier method and Cox regression analysis. In result, there were 221 up-regulated and 47 down-regulated differentially expressed circRNAs (DEcircRNAs) in HCC compared with normal tissue. A circRNA-related ceRNA network was established, containing 11 DEcircRNAs, 12 DEmiRNAs, and 161 DEmRNAs. Meanwhile, another DEG analysis revealed 625 up-regulated and 123 down-regulated DEGs between HCC with and without VI, and then a protein–protein interaction (PPI) network was built based on 122 VI-related DEGs. From the intersection of DEGs within the PPI and ceRNA networks, we obtained seven hub genes to build a novel prognostic risk score model. HCC patients with high-risk scores had shorter survival time and presented more advanced T/N/M stages as well as VI occurrence. In conclusion a novel prognostic model based on seven VI-associated DEGs within a circRNA-related ceRNA network was constructed in this study, with great ability to predict the outcome of HCC patients.
Differences in perceived influencer authenticity: a comparison of Gen Z and Millennials’ definitions of influencer authenticity during the de-influencer movement
Authors: Singer Mara F. , Callendar Chaz L. , Ma Xiao , Tham Samuel M. 
Published: September 2023

Abstract

Purpose
Authenticity is a trait that is considered by both Gen Z and Millennials as an integral part of the social media influencer persuasive episode. This research uses thematic analysis to deconstruct how both Gen Z and Millennials develop their perceptions of social media influencer authenticity.

Design/methodology
This study conducted four focus groups with a total of 15 members of Gen Z and 13 members of Millennials. Participants were screened to ensure they followed lifestyle social media influencers and have made purchases based on influencer recommendations. The online focus groups discussed how participants from each generation evaluate the authenticity of Social Media Influencers (SMIs) using a six-factor cumulative model (Nunes, Joseph C., Andrea Ordanini & Gaia Giambastiani. 2021. The concept of authenticity: What it means to consumers. Journal of Marketing 85(4). 1–20).

Findings
The research findings show that Gen Z considers SMIs to be highly educated friends with whom they can seek advice and opinions, while Millennials see social media influencer as a profession that needs to be done in an ethical and transparent manner.

Practical implications
These findings are useful in understanding the psychology between both Gen Z and Millennials so appropriate producer messaging can be used to reach them.

Originality/value
As the concept of authenticity has been defined differently by multiple entities, this research seeks to fill the current research gap in the literature analyzing generational definitions of perceived authenticity, specifically between the two largest online consumer cohorts, Gen Z and Millennials.
Effects of oral morphine on experimentally evoked itch and pain: a randomized, double-blind, placebo-controlled trial
Authors: Okutani Hiroai , Lo Vecchio Silvia , Ammitzbøll Nadia , Drewes Asbjørn Mohr , Arendt-Nielsen Lars 
Published: September 2023

Abstract

Objectives
Pain and itch share similar neuronal networks; hence, it is difficult to explain why opioids can relieve pain but provoke itching. The present human volunteer study aimed to investigate the similarities and differences in responses to experimentally provoked pain and itching to explore the underlying fundamental mechanisms.

Methods
Twenty-four healthy volunteers were enrolled in this single-center, randomized, double-blind, placebo-controlled, parallel-group trial. Three volar forearms and two mandibular areas were marked, and participants randomly received morphine (20 mg) or identical placebo tablets. Heat, cold, and pressure pain thresholds, and vasomotor responses were assessed at baseline and after oral morphine administration. Itch provocations were induced by intradermal application of 1 % histamine or a topical cowhage (non-histaminergic itch) to a marked area of the skin. The participants were subsequently asked to rate their itching and pain intensities. The assessments were repeated for all marked areas.

Results
Morphine caused analgesia, as assessed by the significant modulation of cold and pressure pain thresholds (p<0.05). There were no significant differences in histaminergic or non-histaminergic itch or pain intensity between the morphine and placebo groups. Superficial blood perfusion (vasomotor response) following histamine provocation was significantly increased by morphine (p<0.05) in both areas. No correlation was found between the provoked itch intensity and analgesic efficacy in any area or group.

Conclusions
Oral administration of morphine caused analgesia without modulating itch intensities but increased neurogenic inflammation in response to histamine, suggesting that different opioid mechanisms in histaminergic and non-histaminergic neurons evoke neurogenic inflammation.
Cementite-type Y3Ru
Authors: Chamard Valentin Antoine , Matar Samir F. , Schumacher Lars , Paulsen Christian , Kösters Jutta , Block Theresa , Pöttgen Rainer 
Published: September 2023

Abstract
Single crystals of Y3Ru were obtained as a side product during phase analytical studies of yttrium-rich compounds in the system Y–Ru–Zn. The structure of Y3Ru was refined from single-crystal X-ray diffractometer data: Fe3C type, Pnma, a = 732.51(7), b = 925.61(8), c = 633.66(10) pm, wR = 0.0639, 811 F
2 values, 23 variables. The ruthenium atoms have coordination number 9 in form of a strongly distorted tricapped trigonal yttrium prism with Ru–Y distances ranging from 275–391 pm. The second substructure concerns empty Y6 octahedra (d(Y–Y) = 344–396 pm). Electronic structure calculations show a net charge transfer from yttrium to ruthenium and underpin the essentially covalent Y–Ru bonding. A phase-pure sample of Y3Ru was synthesized from the elements by arc-melting. Temperature-dependent magnetic susceptibility studies of this sample reveal Pauli paramagnetism (3.6(1) × 10−5 emu mol−1 at T = 300 K).
Experimental Investigation on the Post-liquefaction Behavior of Sands in Simple Shear Conditions
Authors: Mele Lucia , Lirer Stefania , Flora Alessandro 
Published: September 2023

Abstract
Experimental evidence shows that earthquake induced liquefaction can occur more than once in sandy soils. Moreover, despite an increase in soil density caused by the dissipation of the excess pore pressure induced by earthquakes, the liquefaction resistance of soils that have experienced liquefaction may be lower than that of virgin soils. This paper offers insight into this topic starting from the analysis of the undrained monotonic behavior of post-liquefied sands by means of tests performed with a simple shear cell equipped with flexible boundaries, which maintains a constant diameter to guarantee the “K0-condition.” The control system of cyclic, reconsolidation, and monotonic phases is described in detail. The experimental results show that neither the relative density, effective confining stress, cyclic stress ratio, nor the direction of shear strain play important roles in the monotonic behavior of post-liquefied soils. Moreover, the comparison between the monotonic response of virgin and post-liquefied soils (prepared by moist tamping technique) shows that it is not affected by the stress–strain history experienced by soils. It can be explained through a microstructural interpretation. According to which, the initial soil fabric generated with the moist tamping method and that formed during liquefaction remain almost unchanged because of the rotation of principal stress directions occurring during simple shear tests. A further confirmation is given by the results of tests performed on specimens prepared by air pluviation method.
Wear Resistance of Fe–Cr–C Hardfacing Deposited by Flux-Core-Double-Wire GTAW in Rubber Wheel Abrasion Test
Authors: Colaço Fernando Henrique Gruber , Turazi Almir , Stryhalski Joel , Chagas Gil Magno Portal , Galiotto Alexandre , Pintaude Giuseppe 
Published: September 2023

Abstract
The wear resistance of metals can be improved by using the hardfacing technique. Different processes can produce it with the desirable microstructures and mechanical properties. This study presents an original method, flux-core-double-wire of gas-shielded tungsten arc welding, in which wires of different compositions are used simultaneously to obtain different microstructures. The deposition was controlled through the following parameters: welding speed, deposition current, standoff distance, torch angle, and pulse frequency of wire feed. Four coatings were deposited on AISI 1020 steel substrate by combining the cored wires: Fe–Cr–C, Fe–Cr–C–Nb, Fe–Cr–C–Mo–Nb, and Fe–Cr–C–Mo–Ti. The combination of these wires resulted in a hypoeutectic microstructure with niobium and titanium carbides, with an average hardness of 650 HV0.3. The hypereutectic microstructures were formed by different niobium contents, with a microhardness range from 820 to 1,020 HV0.3. The performance of the hardfacing was evaluated in the rubber wheel abrasion test described by ASTM G65, Standard Test Method for Measuring Abrasion Using the Dry Sand/Rubber Wheel Apparatus (Superseded), procedure B. The results revealed that the carbide cracking distinguished the wear resistance, and the hardness was not enough to separate the wear behavior. Still, the volume fraction of carbides was a decisive microstructural parameter.
Inhibition of Dopamine Neurons Prevents Incentive Value Encoding of a Reward Cue: With Revelations from Deep Phenotyping
Authors: Iglesias Amanda G. , Chiu Alvin S. , Wong Jason , Campus Paolo , Li Fei , Liu Zitong (Nemo) , Bhatti Jasmine K. , Patel Shiv A. , Deisseroth Karl , Akil Huda , Burgess Christian R. , Flagel Shelly B. 
Published: September 2023

The survival of an organism is dependent on its ability to respond to cues in the environment. Such cues can attain control over behavior as a function of the value ascribed to them. Some individuals have an inherent tendency to attribute reward-paired cues with incentive motivational value, or incentive salience. For these individuals, termed sign-trackers, a discrete cue that precedes reward delivery becomes attractive and desirable in its own right. Prior work suggests that the behavior of sign-trackers is dopamine-dependent, and cue-elicited dopamine in the NAc is believed to encode the incentive value of reward cues. Here we exploited the temporal resolution of optogenetics to determine whether selective inhibition of ventral tegmental area (VTA) dopamine neurons during cue presentation attenuates the propensity to sign-track. Using male tyrosine hydroxylase(TH)-CreLong Evans rats, it was found that, under baseline conditions, ∼84% ofTH-Crerats tend to sign-track. Laser-induced inhibition of VTA dopamine neurons during cue presentation prevented the development of sign-tracking behavior, without affecting goal-tracking behavior. When laser inhibition was terminated, these same rats developed a sign-tracking response. Video analysis using DeepLabCutTMrevealed that, relative to rats that received laser inhibition, rats in the control group spent more time near the location of the reward cue even when it was not present and were more likely to orient toward and approach the cue during its presentation. These findings demonstrate that cue-elicited dopamine release is critical for the attribution of incentive salience to reward cues.SIGNIFICANCE STATEMENTActivity of dopamine neurons in the ventral tegmental area (VTA) during cue presentation is necessary for the development of a sign-tracking, but not a goal-tracking, conditioned response in a Pavlovian task. We capitalized on the temporal precision of optogenetics to pair cue presentation with inhibition of VTA dopamine neurons. A detailed behavioral analysis with DeepLabCutTMrevealed that cue-directed behaviors do not emerge without dopamine neuron activity in the VTA. Importantly, however, when optogenetic inhibition is lifted, cue-directed behaviors increase, and a sign-tracking response develops. These findings confirm the necessity of dopamine neuron activity in the VTA during cue presentation to encode the incentive value of reward cues.
Los valores en la práctica docente y las preguntas por la calidad y la equidad en la institución escolar
Authors: Fierro Evans Cecilia 
Published: September 2023

El presente trabajo reporta los principales resultados de una investigación etnográfica interesada en identificar los valores que los docentes ofrecen a través de su actuación cotidiana, así como analizar sus implicaciones para el desarrollo de la moralidad de sus alumnos. A partir de observaciones en aula y otros espacios escolares, y con base en las perspectivas socio-antropológica y psico-pedagógica sobre los valores, se generan tres "rutas" de acercamiento al objeto de estudio: 1) Comportamiento normativo docente; integra las normas concretas, abstractas y la consistencia en su aplicación. 2)Comportamiento afectivo, refiere a los vehículos utilizados para aludir a las normas y las expresiones afectivas dirigidas al alumno. 3) Conducción de los procesos de enseñanza. Analiza las secuencias de reflexión de contenidos académicos y valorales generadas por los docentes. La investigación releva algunos mecanismos y procesos mediante los cuales se configura cotidianamente la vivencia referida al respeto a la dignidad de los alumnos así como a recibir un trato equitativo en la escuela. En consonancia con los hallazgos de estudios interpretativos sobre acceso y retención en educación básica, se afirma que no solamente la trayectoria escolar está aquí en juego, sino asuntos fundamentales de cara al desarrollo moral de los alumnos.Descriptores: práctica docente - valores - educación moral - institución escolar - calidad educativa The values in teaching practice and the questions for quality and equity in schools This report refers to the main results found in an ethnographic research, which deals with the identification of the values that teachers offer to the students through their daily performance, and the analysis of the implications that this matter has in the moral development of their students. Through the observations in classrooms and other school spaces, as well as the analysis based on the socio-anthoropological and psico-pedagogical theoretical approaches, three "routes" were developed to focus the teaching practices of professors in the basic education level: 1) The normative behaviour, which integrates the concrete norms, the abstract norms and the consistence in their application. 2) The affective behaviour, which refers to the "vehicles", this is the different ways in which the teachers transmit the norms, and the affective expressions that are directed to the students. 3) The conduction of the learning processes. This route analyses the "reflection sequences", through academic and moral contents, that professors offer to their students. This research makes evident some mechanisms through which the "living processes" of respect and equity are established in the relationship between teachers and students.Keywords: teaching practice - values - moral education - school - quality of education
Dimensiones y escenarios del buen aprendizaje para todos
Authors: Domingo Segovia Jesús 
Published: September 2023

Educar y cambiar desde una perspectiva de transformación social significa retomar críticamente las funciones de la escuela y replantearse qué es un buen aprendizaje y qué hacen los centros y los docentes para promoverlo. Este artículo, pues, repasa las dimensiones básicas que se ponen en juego para buscar la calidad y la equidad. Y, de este modo, establece unos marcos desde los que comprender los elementos que componen la gramática básica de un buen aprendizaje, de una buena enseñanza y de una buena escuela. Concluye concertando un coherente modelo de integración de estos tres subsistemas.Descriptores: aprendizaje - curriculum - escenarios de enseñanza-aprendizaje - calidad. Dimensions and scenarios of good learning for allTo educate and to change from a perspective of social transformation means to recapture the functions of the school critically and to reconsider what a good learning is and what they make the school and the educational ones to promote it. This article because, it reviews the basic dimensions that put at stake to look for the quality and the justness. And, this way, it establishes some marks from those that to understand the elements that compose the basic grammar of a powerful learning, powerful teaching and powerful schools. It concludes concerting a coherent model of integration of these three subsystems.Keywords: learning - curriculum - teaching-learning scenarios - quality