bluuebunny/crossref_metadata_2025 huggingface dataset:
Characterization of the complete chloroplast genome sequence of Maesa japonica (Myrsinaceae)
Authors: KIM Young-Soo , PARK Beom Kyun , JANG Young-Jong , SON Dong Chan
Published: January 2024

Maesa Forssk. (Myrsinaceae) has approximately 200 species distributed in the tropics from southern Africa to East Asia. Among them, Maesa japonica (Thunb.) Moritzi ex Zoll. is distributed throughout China, Japan, Taiwan, Vietnam, and Korea. In Korea, this species is found only on Jejudo Island. In this study, we conducted whole-genome sequencing of M. japonica chloroplast (cp). The complete cp genome sequence of M. japonica was found to be 157,189 bp in length, consisting of large (87,780 bp) and small (18,143 bp) single-copy regions (LSC and SSC, respectively) and a pair of identical inverted repeats (IRs) (25,633 bp). The overall GC content of the cp genome was 38%, while those of the LSC, SSC, and each IR were 35.2%, 30.9%, and 43.1%, respectively. Furthermore, 130 genes consisting of 85 protein-coding genes, 37 transfer RNA genes and eight ribosomal RNA genes were identified in the cp genome. A phylogenetic analysis of 12 taxa inferred from the cp genome revealed a close relationship between M. salicifolia and M. japonica. The complete cp genome sequence of M. japonica provides valuable information for future evolutionary and phylogenetic studies of Maesa.
Lovemarks Drivers Effect on Luxury Fashion Brands Emotional Attachment
Authors: Ali Fatma , M. Labib Enaba Hala
Published: January 2024

This research endeavors to investigate the effect of lovemarks on luxury fashion consumer decision-making in Egypt, examining its implications on the international competitive posture of Egyptian luxury firms. It seeks to bridge a significant research gap in the understanding of luxury consumer behavior in Egypt, particularly against the backdrop of global luxury market transformations. The study's objectives encompass the analysis of critical lovemarks drivers effecting luxury purchases and the exploration of the interplay between love and respect in the emotional attachment between consumers and brands. Employing a positivist epistemological approach, this research utilizes a deductive methodology within a cross-sectional framework, underpinned by quantitative data analysis from 440 luxury brand consumers. A five-point Likert scale questionnaire, informed by non-probability judgmental sampling based on socio-economic and lifestyle criteria, elucidates consumer perspectives. Structural Equation Modeling (SEM) identifies intimacy, sensuality, and mystery as pivotal in nurturing brand love, while trust, performance, and reputation predominantly foster brand respect. Notably, intimacy emerges as the most influential factor in developing brand love, underscoring the value of personal brand-consumer connections. From an academic standpoint, this study contributes to the scholarly dialogue on luxury consumer behavior, with a special focus on the Egyptian milieu. In practical terms, it provides luxury brands with strategic insights for intensifying marketing approaches through emotional engagement and narrative construction. These insights are crucial for stakeholders in luxury brands, offering a strategic framework to enhance investment decision-making and bolster consumer loyalty in a culturally varied market.
WeChat News Contact among Chinese Youth and Impact on Political Participation: the Role of Social Capital, Political Trust, and Media Literacy
Authors: Tang Qingqing , Kamarudin Syafila , Zhang Xin
Published: January 2024

Several recent studies have found that social media positively influences the online political participation behavior of youth. However, only a few studies have explored the political participation behavior of Chinese youth on specific social media, such as WeChat, the most widely used mobile social media in China. To bridge this gap, this study examines Chinese youths’ contact with WeChat and its subsequent impact on political participation. The study uses a questionnaire to collect data and uses the SPSS 25.0 version to analyse data. The findings show that: (1) Chinese youths' WeChat news contact positively affects their WeChat political participation; (2) Chinese youths' social capital positively affects their political trust; (3) social capital and political trust play a partially mediating role between youths' WeChat news contact and youths' WeChat political participation; (4) media literacy plays a moderating role between youth WeChat news contact and youth WeChat political participation. Implications and limitations of the ﬁndings are discussed.
The roles of the biochemical and molecular changes in resistance of Tetranychus urticae populations selected with spiromesifen+abamectin mixture

Authors: Ay Recep , Çevik Bayram , Alsay Safiye
Published: January 2024

The physiological changes in Tetranychus urticae selected with spiromesifen+abamectin (S+A) mixture formulation were demonstrated by biochemical and molecular methods. The susceptible (GSS) population of T. urticae, was selected with S+A and made resistant with increasing doses of the mixture formulation. The resistant population was divided into two, and selection pressure was terminated in one population which is named IR (Interrupt resistant). In the other population, the selection with S+A was continued and the population named IR2. Activities of some detoxification enzymes (esterase, glutathione-S-transferase (GST) and cytochrome P450) were investigated in the GSS and IR populations. The activity of esterase, GST and P450 enzymes were increased by 1.77, 2.57 and 2.58-fold, respectively, in the IR population compared to the GSS population. Also, investigation of synergistic effects with esterase inhibitor (TTP), GST inhibitor (DEM) and P450 inhibitor (PBO) in this population revealed that all three synergists showed significant synergistic effects in IR population. In molecular studies, when the population was screened for the presence of two previously identified glutamate channel mutations (G314D and G326E) by qPCR with TaqMan probes no mutations could be detected in glutamate channels. and the CTD domain of acetyl coenzyme-A carboxylase (ACCase). Furthermore, possible genetic mutations in the biotin carboxylase domain (BCD) and carboxyl transferase domain (CTD) of the ACCase target sites were determined by sequencing. Although a single amino acid mutation G37D in the BCD of the ACCase gene of the IR and IR2 populations was detected, its association with spiromesifen resistance was not confirmed. The results indicated that increased detoxification and possible target site mutation may be responsible for the S+A resistance in the IR and IR2 populations.
Cluster Mo2C deposited on graphene nanowalls by x-ray photoelectron spectroscopy
Authors: Chaitoglou Stefanos , Ospina Rogelio , Bertran-Serra Enric
Published: January 2024

Molybdenum deposited on carbon graphene nanowalls was characterized by x-ray photoelectron spectroscopy with an Al Kα (1486.6 eV) excitation source. The sample was fixed to a stainless-steel sample holder with copper double-sided adhesive tape. Survey spectrum, C 1s, O 1s, Si 2p, and Mo 3d core levels spectra were acquired.
Effects of background noise on autonomic arousal (skin conductance level)
Authors: Alvar Ann , Francis Alexander L.
Published: January 2024

This study was designed to investigate the relationship between sound level and autonomic arousal using acoustic signals similar in level and acoustic properties to common sounds in the built environment. Thirty-three young adults were exposed to background sound modeled on ventilation equipment noise presented at levels ranging from 35 to 75 dBA sound pressure level (SPL) in 2 min blocks while they sat and read quietly. Autonomic arousal was measured in terms of skin conductance level. Results suggest that there is a direct relationship between sound level and arousal, even at these realistic levels. However, the effect of habituation appears to be more important overall.
Contribution of bacterial and host factors to pathogen “blooming” in a gnotobiotic mouse model for
Salmonella enterica
serovar Typhimurium-induced enterocolitis
Authors: Beutler Markus , Eberl Claudia , Garzetti Debora , Herp Simone , Münch Philipp , Ring Diana , Dolowschiak Tamas , Brugiroux Sandrine , Schiller Patrick , Hussain Saib , Basic Marijana , Bleich André , Stecher Bärbel
Published: January 2024

Inflammation has a pronounced impact on the intestinal ecosystem by driving an expansion of facultative anaerobic bacteria at the cost of obligate anaerobic microbiota. This pathogen “blooming” is also a hallmark of enteric
Salmonella enterica
serovar Typhimurium (
S
. Tm) infection. Here, we analyzed the contribution of bacterial and host factors to
S
. Tm “blooming” in a gnotobiotic mouse model for
S
. Tm-induced enterocolitis. Mice colonized with the Oligo-Mouse-Microbiota (OMM
12
), a minimal bacterial community, develop fulminant colitis by day 4 after oral infection with wild-type
S
. Tm but not with an avirulent mutant. Inflammation leads to a pronounced reduction in overall intestinal bacterial loads, distinct microbial community shifts, and pathogen blooming (relative abundance >50%).
S
. Tm mutants attenuated in inducing gut inflammation generally elicit less pronounced microbiota shifts and reduction in total bacterial loads. In contrast,
S
. Tm mutants in nitrate respiration, salmochelin production, and ethanolamine utilization induced strong inflammation and
S
. Tm “blooming.” Therefore, individual
Salmonella
-specific inflammation-fitness factors seem to be of minor importance for competition against this minimal microbiota in the inflamed gut. Finally, we show that antibody-mediated neutrophil depletion normalized gut microbiota loads but not intestinal inflammation or microbiota shifts. This suggests that neutrophils equally reduce pathogen and commensal bacterial loads in the inflamed gut.
The crustacean DNA virus tegument protein VP26 binds to SNAP29 to inhibit SNARE complex assembly and autophagic degradation
Authors: Liu Ling-Ke , Jian Jiu-Ting , Jing Shan-Shan , Gao Rui-Lin , Chi Xiao-Dong , Tian Geng , Liu Hai-Peng
Published: January 2024

White spot syndrome virus (WSSV) is one of the largest animal DNA viruses in terms of its genome size and has caused huge economic losses in the farming of crustaceans such as shrimp and crayfish. Detailed knowledge of WSSV-host interactions is still lacking, particularly regarding viral escape from host immune clearance. Intriguingly, we found that the presence of WSSV-VP26 might inhibit the autophagic degradation of WSSV
in vivo
in the crustacean species red claw crayfish. Importantly, this study is the first to show that viral protein VP26 functions as a core factor to benefit WSSV escape by disrupting the assembly of the soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) complex, which is necessary for the proposed fusion of autophagosomes with lysosomes for subsequent degradation. These findings highlight a novel mechanism of DNA virus evasion by blocking SNARE complex assembly and identify viral VP26 as a key candidate for anti-WSSV targeting.
Computational analysis of genes with lethal knockout phenotype and prediction of essential genes in archaea
Authors: Makarova Kira S. , Zhang Changyi , Wolf Yuri I. , Karamycheva Svetlana , Whitaker Rachel J. , Koonin Eugene V.
Published: January 2024

Only a relatively small fraction of the genes in any bacterium or archaeon is essential for survival as demonstrated by the lethal effect of their disruption. The identification of essential genes and their functions is crucial for understanding fundamental cell biology. However, many of the genes with a lethal knockout phenotype remain poorly functionally characterized, and furthermore, many genes can exhibit this phenotype not because their products perform essential cellular functions but because their knockout activates the toxicity of other genes. We applied state-of-the-art computational methods to predict the functions of a number of uncharacterized genes with the lethal knockout phenotype in two archaeal species and developed a computational approach to predict genes involved in essential functions. These findings advance the current understanding of key functionalities of archaeal cells.
GSR-DB: a manually curated and optimized taxonomical database for 16S rRNA amplicon analysis
Authors: Molano Leidy-Alejandra G. , Vega-Abellaneda Sara , Manichanh Chaysavanh
Published: January 2024

Taxonomic assignments of microorganisms have long been hindered by inconsistent nomenclature and annotation issues in existing databases like SILVA, Greengenes, Greengenes2, Genome Taxonomy Database, or Ribosomal Database Project. To overcome these issues, we created Greengenes-SILVA-RDP database (GSR-DB), accurate and comprehensive taxonomic annotations of 16S amplicon data. Unlike previous approaches, our innovative pipeline includes a unique taxonomy unification step, ensuring consistent and reliable annotations. Our evaluation analyses showed that GSR-DB outperforms existing databases in providing species-level resolution, especially based on mock-community analysis, making it a game-changer for microbiome studies. Moreover, GSR-DB is designed to be accessible to researchers with limited computational resources, making it a powerful tool for scientists across the board. Available for full-length 16S sequences and commonly used hypervariable regions, including V4, V1–V3, V3–V4, and V3–V5, GSR-DB is a go-to database for robust and accurate microbial taxonomy analysis.
Bacterial pathogens in Xpert MTB/RIF Ultra-negative sputum samples of patients with presumptive tuberculosis in a high TB burden setting: a 16S rRNA analysis
Authors: Kebede Wakjira , Abebe Gemeda , De Boeck Ilke , Gudina Esayas Kebede , Cauwenberghs Eline , Lebeer Sarah , Van Rie Annelies
Published: January 2024

In patients with presumptive tuberculosis (TB) in whom the diagnosis of TB was excluded, understanding the bacterial etiology of lower respiratory tract infections (LRTIs) is important for optimal patient management. A secondary analysis was performed on a cohort of 250 hospitalized patients with symptoms of TB. Bacterial DNA was extracted from sputum samples for Illumina 16S rRNA sequencing to identify bacterial species based on amplicon sequence variant level. The bacterial pathogen most likely to be responsible for the patients’ LRTI could only be identified in a minority (6.0%, 13/215) of cases based on 16S rRNA amplicon sequencing:
Mycoplasma pneumoniae
(
n
= 7),
Bordetella pertussis
(
n
= 2),
Acinetobacter baumanii
(
n
= 2), and
Pseudomonas aeruginosa
(
n
= 2). Other putative pathogens were present in similar proportions of Xpert Ultra-positive and Xpert Ultra-negative sputum samples. The presence of
Streptococcus
(
pseudo
)
pneumoniae
appeared to increase the odds of radiological abnormalities (aOR 2.5, 95% CI 1.12–6.16) and the presence of
S.
(
pseudo
)
pneumoniae
(aOR 5.31, 95% CI 1.29–26.6) and
Moraxella catarrhalis/nonliquefaciens
(aOR 12.1, 95% CI 2.67–72.8) increased the odds of 6-month mortality, suggesting that these pathogens might have clinical relevance.
M. pneumoniae
,
B. pertussis,
and
A. baumanii
appeared to be the possible causes of TB-like symptoms.
S.
(
pseudo
)
pneumoniae
and
M. catarrhalis
/
nonliquefaciens
also appeared of clinical relevance based on 16S rRNA amplicon sequencing. Further research using tools with higher discriminatory power than 16S rRNA sequencing is required to develop optimal diagnostic and treatment strategies for this population.

IMPORTANCE

The objective of this study was to identify possible bacterial lower respiratory tract infection (LRTI) pathogens in hospitalized patients who were initially suspected to have TB but later tested negative using the Xpert Ultra test. Although 16S rRNA was able to identify some less common or difficult-to-culture pathogens such as
Mycoplasma pneumoniae
and
Bordetella pertussis
, one of the main findings of the study is that, in contrast to what we had hypothesized, 16S rRNA is not a method that can be used to assist in the management of patients with presumptive TB having a negative Xpert Ultra test. Even though this could be considered a negative finding, we believe it is an important finding to report as it highlights the need for further research using different approaches.
Recurrent SARS-CoV-2 mutations at Spike D796 evade antibodies from pre-Omicron convalescent and vaccinated subjects
Authors: Elko Evan A. , Mead Heather L. , Nelson Georgia A. , Zaia John A. , Ladner Jason T. , Altin John A.
Published: January 2024

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) lineages of the Omicron variant rapidly became dominant in early 2022 and frequently cause human infections despite vaccination or prior infection with other variants. In addition to antibody-evading mutations in the receptor-binding domain, Omicron features amino acid mutations elsewhere in the Spike protein; however, their effects generally remain ill defined. The Spike D796Y substitution is present in all Omicron sub-variants and occurs at the same site as a mutation (D796H) selected during viral evolution in a chronically infected patient. Here, we map antibody reactivity to a linear epitope in the Spike protein overlapping position 796. We show that antibodies binding this region arise in pre-Omicron SARS-CoV-2 convalescent and vaccinated subjects but that both D796Y and D796H abrogate their binding. These results suggest that D796Y contributes to the fitness of Omicron in hosts with pre-existing immunity to other variants of SARS-CoV-2 by evading antibodies targeting this site.

IMPORTANCE

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has evolved substantially through the coronavirus disease 2019 (COVID-19) pandemic: understanding the drivers and consequences of this evolution is essential for projecting the course of the pandemic and developing new countermeasures. Here, we study the immunological effects of a particular mutation present in the Spike protein of all Omicron strains and find that it prevents the efficient binding of a class of antibodies raised by pre-Omicron vaccination and infection. These findings reveal a novel consequence of a poorly understood Omicron mutation and shed light on the drivers and effects of SARS-CoV-2 evolution.
Structure and Trophic Characteristics of Zooplankton Communities of the East Siberian Sea
Authors: Flint M. V. , Arashkevich E. G. , Drits A. V. , Poyarkov S. G. , Nedospasov A. A. , Schuka T. A.
Published: January 2024

Research on the structure and trophic characteristics of zooplankton communities of the East Siberian Sea (ESS) was performed within the program “Marine Ecosystems of the Siberian Arctic” during cruise 69 of the R/VAkademik Mstislav Keldysh. The material was collected on two quasimeridional transects conducted in the latitudinal range ~71°00′–75°30′ N from the inner shelf adjacent to the Indigirka and Kolyma outfalls to the outer shelf during September 5–9, 2017. The list of species and larger taxa, as well as their biomass and trophic characteristics, are presented, and the peculiarities of cross-shelf distribution in relation to the conditions of the pelagic environment are described. The obtained estimates of the mezoplankton biomass in the ESS are on the whole within the range typical of the rest of the Siberian Seas in summer–fall. It has been established that mezoplankton communities of the western and eastern ESS significantly differ in quantitative characteristics, the role of dominant species and taxonomic groups in biomass, grazing impact of mesoplankton on the phytoplankton biomass and production, and features of the cross-shelf distribution of these characteristics. The boundary between the communities with different structural functional characteristics is located approximately at 160°–163° E. A conclusion is made that analysis of climatic and seasonal changes in ESS mezoplankton should be examined with allowance for the principal differences between pelagic biotopes and communities of the western and eastern parts of the basin.
TREX-2-ORC Complex of D. melanogaster Participates in Nuclear Export of Histone mRNA
Authors: Kurshakova M. M. , Yakusheva Y. A. , Georgieva S. G.
Published: January 2024

The TREX-2-ORC protein complex of D. melanogaster is necessary for the export of the bulk of synthesized poly(A)-containing mRNA molecules from the nucleus to the cytoplasm through the nuclear pores. However, the role of this complex in the export of other types of RNA remains unknown. We have shown that TREX-2-ORC participates in the nuclear export of histone mRNAs: it associates with histone mRNPs, binds to histone H3 mRNA at the 3'-terminal part of the coding region, and participates in the export of histone mRNAs from the nucleus to the cytoplasm.
Biologgers reveal unanticipated issues with descending angled walleye with barotrauma symptoms
Authors: Madden Jamie C. , LaRochelle Luc , Burton Declan , Danylchuk Sascha C. , Danylchuk Andy J. , Cooke Steven J.
Published: January 2024

Without sufficient time to diffuse air from their swim bladders, physoclistous fish caught in deep water can exhibit symptoms of barotrauma. In this study, we tested the effectiveness of four barotrauma relief techniques on 76 walleye ( Sander vitreus) and compared their 10 min post-release behaviour and depth selection with an untreated control group using a biologger containing a tri-axial accelerometer and depth sensor. Vented fish showed the best success rate of returning to depth, while no untreated controls were able to swim down. For fish that remained at depth, half were found to have lost orientation and were upside down during the entire monitoring period, with this orientation being strongly associated with the relief method. Vented fish had higher chances (80%) of remaining in the correct orientation at depth compared with the other methods (average of 38%). Our research shows that the best way to prevent negative outcomes of barotrauma is to avoid fishing at depths that yield barotrauma; however, if unavoidable, affected fish should be carefully vented by trained anglers to best reduce post-release impairments.
Which factors influence consumers’ selection of wood as a building material for houses?
Authors: Mergel Christian , Menrad Klaus , Decker Thomas
Published: January 2024

Construction and use of buildings is one of the highest users of global energy (34%) and one of the highest contributors to greenhouse gas emissions (37%). Using wood instead of carbon-intensive materials such as bricks reduces a building's embodied energy and is a more eco-friendly alternative. Since the quota of newly built wooden houses in Germany is still relatively low, gaining insights into the perspective of consumers is crucial. This study aims to investigate factors from a consumer perspective that influence the selection of wood as the primary building material for residential houses. Therefore, an online survey was conducted in Germany to gather data from individuals ( N = 510) who either bought or built a house in the last 5 years. By conducting a logistic regression, we have identified six influencing factors for the selection of wood. Positive views on wood's eco-friendliness and emphasis on renewable materials are key factors in choosing wood. Higher age and living in rural areas also increase the likelihood of selecting wood, while concerns about value stability and durability have negative effects. We conclude that increasing information activities, raising awareness about wood's ecological benefits, and dispelling prejudices can significantly impact its selection as a preferred building material.
Impact of beam–beam effects on absolute luminosity calibrations at the CERN Large Hadron Collider
Authors: Babaev A. , Barklow T. , Karacheban O. , Kozanecki W. , Kralik I. , Mehta A. , Pasztor G. , Pieloni T. , Stickland D. , Tambasco C. , Tomas R. , Wańczyk J.
Published: January 2024

At the Large Hadron Collider (LHC), absolute luminosity calibrations obtained by the van der Meer (vdM) method are affected by the mutual electromagnetic interaction of the two beams. The colliding bunches experience relative orbit shifts, as well as optical distortions akin to the dynamic-$$\beta $$βeffect, that both depend on the transverse beam separation and must therefore be corrected for when deriving the absolute luminosity scale. In thevdMregime, the beam–beam parameter is small enough that the orbit shift can be calculated analytically. The dynamic-$$\beta $$βcorrections to the luminometer calibrations, however, had until the end of Run 2 been estimated in the linear approximation only. In this report, the influence of beam–beam effects on thevdM-based luminosity scale is quantified, together with the associated systematic uncertainties, by means of simulations that fully take into account the non-linearity of the beam–beam force, as well as the resulting non-Gaussian distortions of the transverse beam distributions. Two independent multiparticle simulations, one limited to the weak-strong approximation and one that models strong-strong effects in a self-consistent manner, are found in excellent agreement; both predict a percent-level shift of the absolutepp-luminosity values with respect to those assumed until recently in the physics publications of the LHC experiments. These results also provide guidance regarding further studies aimed at reducing the beam–beam-related systematic uncertainty on beam–beam corrections to absolute luminosity calibrations by the van der Meer method.
Properties of the $$\eta _q$$ leading-twist distribution amplitude and its effects to the $$B/D^+ \rightarrow \eta ^{(\prime )}\ell ^+ \nu _\ell $$ decays
Authors: Hu Dan-Dan , Wu Xing-Gang , Fu Hai-Bing , Zhong Tao , Wu Zai-Hui , Zeng Long
Published: January 2024

The$$\eta ^{(\prime )}$$η(′)-mesons in the quark-flavor basis are mixtures of two mesonic states$$|\eta _{q}\rangle =|{\bar{u}} u+{\bar{d}} d\rangle /\sqrt{2}$$|ηq⟩=|u¯u+d¯d⟩/2and$$|\eta _{s}\rangle =|{\bar{s}} s\rangle .$$|ηs⟩=|s¯s⟩.In previous work, we have made a detailed study on the$$\eta _{s}$$ηsleading-twist distribution amplitude by using the$$D^+_s$$Ds+meson semileptonic decays. As a sequential work, in the present paper, we fix the$$\eta _q$$ηqleading-twist distribution amplitude by using the light-cone harmonic oscillator model for its wave function and by using the QCD sum rules within the QCD background field to calculate its moments. The input parameters of$$\eta _q$$ηqleading-twist distribution amplitude$$\phi _{2;\eta _q}$$ϕ2;ηqat the initial scale$$\mu _0\sim 1$$μ0∼1 GeV are fixed by using those moments. The QCD sum rules for the$$0_{\textrm{th}}$$0th-order moment can also be used to fix the magnitude of$$\eta _q$$ηqdecay constant, giving$$f_{\eta _q}=0.141\pm 0.005$$fηq=0.141±0.005 GeV. As an application of$$\phi _{2;\eta _q},$$ϕ2;ηq,we calculate the transition form factors$$B(D)^+ \rightarrow \eta ^{(\prime )}$$B(D)+→η(′)by using the QCD light-cone sum rules up to twist-4 accuracy and by including the next-to-leading order QCD corrections to the leading-twist part, and then fix the related CKM matrix element and the decay width for the semi-leptonic decays$$B(D)^+ \rightarrow \eta ^{(\prime )}\ell ^+ \nu _\ell .$$B(D)+→η(′)ℓ+νℓ.
Circular geodesics in the field of double-charged dilatonic black holes
Authors: Boshkayev K. , Suliyeva G. , Ivashchuk V. , Urazalina A.
Published: January 2024

A non-extreme dilatonic charged (by two “color electric” charges) black hole solution is examined within a four-dimensional gravity model that incorporates two scalar (dilaton) fields and two Abelian vector fields. The scalar and vector fields interact through exponential terms containing two dilatonic coupling vectors. The solution is characterized by a dimensionless parameter a$$(0< a < 2)$$

(
0
<
a
<
2
)

, which is a specific function of dilatonic coupling vectors. The paper presents solutions for timelike and null circular geodesics that may play a crucial role in different astrophysical scenarios, including quasinormal modes of various test fields in the eikonal approximation. For $$a = 1/2,1, 3/2,2 $$

a
=
1
/
2
,
1
,
3
/
2
,
2

, the radii of the innermost stable circular orbit are presented and analyzed.
Polarised-boson pairs at the LHC with NLOPS accuracy
Authors: Pelliccioli Giovanni , Zanderighi Giulia
Published: January 2024

We present a calculation of inclusive diboson ($${\textrm{WZ, ZZ, WW}}$$

WZ, ZZ, WW

) processes at the LHC in the presence of intermediate polarised weak bosons decaying leptonically, matching next-to-leading-order accuracy in QCD with parton-shower effects. Starting from recent developments in polarised-boson simulation based on the helicity selection at the amplitude level, we have carried out the implementation in the Powheg-Box-Res framework, and validated it against independent fixed-order calculations. A phenomenological analysis in realistic LHC setups, as well as a comparison with recent ATLAS measurements, are presented.
Distance formulas in Bruhat–Tits building of SLd(ℚp)
Authors: Lachman Dominik
Published: January 2024

We study the distance on the Bruhat–Tits building of the group [Formula: see text] (and its other combinatorial properties). Coding its vertices by certain matrix representatives, we introduce a way how to build formulas with combinatorial meanings. In Theorem 1, we give an explicit formula for the graph distance [Formula: see text] of two vertices [Formula: see text] and [Formula: see text] (without having to specify their common apartment). Our main result, Theorem 2, then extends the distance formula to a formula for the smallest total distance of a vertex from a given finite set of vertices. In the appendix we consider the case of [Formula: see text] and give a formula for the number of edges shared by two given apartments.
Emergence of chimera states in neural networks with distance-dependent mean field coupling
Authors: Remi T. , Subha P. A.
Published: January 2024

The emergence of chimera states in neural networks has been an interesting area of research in the past few years and aims to explore the complex brain functions. Even though the presence of chimera states in systems with nonlocal interaction is well known, its emergence in networks with global and local interactions is least explored. Different techniques like introducing distance dependent interactions and restricting initial conditions to certain classes are adopted to induce chimera states in such network. This work analyzes methods to induce chimera or multichimera states in a network of mean field coupled Hindmarsh–Rose neurons in ring topology. The interaction schemes in the network, viz., global, nonlocal and local are realized by limiting the number of neurons involved in coupling and the power law exponent gives a distance gradient effect to them. The studies have shown that, in global interaction, power law exponent induces chimera states and reduces the amount of synchrony in the network. The nonlocal coupling is self-capable of inducing chimera states and power law exponent enhances the capability. When the value of power law exponent is high, the synchrony level is independent of the number of neurons taking part in the coupling. The traveling chimera states are induced in the local (nearest neighbor) coupling by modifying the initial conditions.
URBAN LIVEABILITY AND CEO TURNOVER: EVIDENCE FROM CHINESE FIRMS
Authors: ANWAR SAJID , HU BEIBEI , LI LIPING , WANG KAI
Published: January 2024

Using data from 2,744 listed non-financial firms located in 273 Chinese cities and municipalities during the period spanning 2003 to 2017, this paper examines the impact of changes in urban liveability on the voluntary turnover of CEOs. Employing the panel probit methodology, we find that enhancements in urban liveability result in a reduction in CEO turnover. Moreover, such enhancements also serve to partially mitigate the performance sensitivity of CEO turnover. In a disaggregated analysis, we find that improvements in urban liveability likewise decrease the likelihood of CEO turnover for foreign-owned firms, companies facing stronger external rivals, and those lacking government industrial policy support. Our work extends existing literature on the factors influencing CEO turnover within the framework of incomplete contract theory. Additionally, this paper offers a policy foundation for urban planners to effectively decrease the CEO turnover rate by enhancing urban liveability.
THE SPATIAL SPILLOVER EFFECT OF INNOVATIVE CITY POLICY ON CARBON EFFICIENCY: EVIDENCE FROM CHINA
Authors: GAO DA , FENG HAO , CAO YANJUN
Published: January 2024

The strengthening of the deep integration of innovation and green is a necessary measure for sustainable urban development. Based on the improved Global-EBM, this study regards the innovative city policy as a quasi-natural experiment and evaluates its spatial spillover effects and potential impact channels. The results show that (1) The innovative city policy enhances the urban total factor carbon emission efficiency (TFCEE) and has positive spatial spillover effects on surrounding regions. (2) The mechanism test shows that the effective channels for innovative city policies to enhance TFCEE and generate spatial spillover effects come from improving the degree of green technology and resource allocation. (3) The spillover effect of innovation city policy is more significant for developed, coastal and advanced industrial structures. This study strengthens the theoretical foundation for promoting cross-regional green coordinated development and provides valuable suggestions for policymakers.
Development of silver nanocubes created by pulsed laser ablation in liquid
Authors: Paul Niloy , Sawate Akash , Sugano Satoshi , Katayama Tetsuro , Oishi Masatsugu , Furube Akihiro , Koinkar Pankaj
Published: January 2024

This paper describes a simple approach for creating silver (Ag) nanocubes using pulsed laser ablation in a liquid medium. The development of nanocubical formations of Ag obtained by laser ablation using Nd: YAG laser was conducted for 5, 10, 15, and 20[Formula: see text]min. The surface morphological analysis was performed using field-emission scanning electron microscopy (FESEM) to show the formation of silver nanocubes with edge lengths ranging from 150[Formula: see text]nm to 250[Formula: see text]nm. The UV-visible spectroscopy demonstrates that the concentration of Ag nanostructures, evidenced by the characteristic localized surface plasmon resonance band near 400[Formula: see text]nm in the colloidal solution containing Ag nanoparticles, increased with the increasing laser ablation duration from 5[Formula: see text]min to 20[Formula: see text]min. The growth mechanism for Ag nanocubes can be easily understood with the change in laser ablation time from 5 to 10, 15, and then 20[Formula: see text]min. The Ag sheets with no specific shape start to develop after 5 min of laser ablation, and after 10[Formula: see text]min, larger particles form. Then, after 15[Formula: see text]min, a small number of cube-like nanostructures with rough and uneven edges was obtained. At the end of 20[Formula: see text]min, a complete cubic formed with fine and distinct edges and a very large amount of nanocubes. The elemental silver signal was present in Ag nanocubes, as revealed by the energy-dispersive X-ray spectroscopy (EDS) spectra. The produced Ag nanocubes may be used to construct two-dimensional nanocomposites with practical applications in the electrical, optoelectronic, electrochemical, and biological areas.
Flow and heat transfer of nanofluids in a cylindrical permeable wavy channel embedded in porous medium using Buongiorno’s model
Authors: Dash D. N. , Arjun K. S. , Thatoi D. N. , Ali Rifaqat , Nayak M. K. , Chamkha Ali J.
Published: January 2024

This investigation deals with the flow of Al2O3–water nanofluid in a wavy porous channel embedded in porous rocks. Fluid exchange takes place uniformly between porous rocks and the wavy channel. In this analysis, cylindrical and parallel plate wavy porous channels are considered. Consequences of Brownian motion and thermophoresis on the flow inside a wavy porous channel are elucidated. The modeled equations are made dimensionless by using dimensionless quantities. Impacts of flow parameters on the velocity, temperature, Nusselt number and friction factor are depicted through graphs. The numerical results with respect to parallel plate wavy porous channel are validated by comparing with the published results. The effectiveness of the cylindrical wavy porous channel as a heat transfer enhancement device in comparison to the parallel plate wavy porous channel is confirmed in this study. Designing devices at microlevels and understanding the heat transfer enhancement mechanism in wavy channels using the nanoparticle addition are the major outcomes from the results of this numerical investigation. The heat and mass transfer rate enhancements in the wavy porous channels are due to the higher Brownian motion in the boundary layer region and accelerated thermophoresis through thermal and concentration boundary layer thicknesses.
TRIBOLOGY INTERFACE OVER DIGITAL TECHNOLOGIES AND ENVISAGING TRIBOLOGY WITH PATENT LANDSCAPE — A QUEER REVIEW
Authors: RAJAKUMARESWARAN V. , CHINTHAMU NARENDER , MURALI M. , DEVARAJAN BALAJI
Published: January 2024

Digital technologies sustain today’s world. Every part of the world is working towards digital technologies, which none of us can eliminate. Enormous growth is achieved only by unexpected acceleration by digital technologies, including the Internet of Everything (IoE), Artificial Neural Networks (ANN), Machine Learning (ML), Internet of Things (IoT), Artificial Intelligence (AI), Deep Learning (DL), and many more. These technologies started occupying all the engineering sectors, including manufacturing. This paper focuses on tribology analysis related to manufacturing concerning various digital manufacturing technologies. The paper narration includes Tribology using digital technologies wherein the journals and patent landscape analysis abet them. In trend, Tribology utilizes all these technologies today and envisages its growth with the predominant technological invention in the border view. The survey of various literature reveals that only three digital technologies, including AI, ML, and ANN, are used by tribologists around the globe. Other Technologies like Evolutionary Algorithm (EA), Support Vector Machine (SVM), and Adaptive Neuro-Fuzzy Interference Systems (ANFIS) are not used predominantly.
MODIFICATION OF POLYPYRROLE FILM WITH GOLD MICROPARTICLES FOR GLUCOSE OXIDATION
Authors: CHIKOUCHE IMENE , DEHCHAR CHARIF , ZOUAOUI AHMED , TINGRY SOPHIE , REZIG FARES , BOUHCIDA BOCHRA
Published: January 2024

This work presents the preparation of a gold-polypyrrole (Au-PPy) composite film on a silicon (Si) semiconductor supported by electrodeposition, and the study of its electrocatalytic activity as an anode catalyst for the glucose oxidation reaction in alkaline media. The microstructure of the as-prepared Au-PPy film is characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The results show that the presence of the polymer film on the Si support improves the conductivity of the latter and enables better distribution of the Au microparticles on the electrode surface, thus helping to increase their catalytic activity for glucose oxidation.
Growth, strain, energy gap, optical, mechanical, piezoelectric, and morphology analyses of 2-methylimidazole (2MI) single crystal for NLO device fabrication
Authors: Alexandar A. , Sahaya Infant Lasalle B. , Pandian Muthu Senthil
Published: January 2024

2-methylimidazole (2MI) single crystal has been successfully grown by slow evaporation solution technique (SEST) by using water as a solvent. The synthesized 2MI crystal was purified by repetitive recrystallization. Various other characterizations were carried out for the grown 2MI single crystal, such as powder X-ray diffraction (PXRD), FTIR, UV–Visible NIR, Microhardness, Photoluminescence, SEM, Piezoelectric, and SHG. The 2MI crystal was subjected to PXRD to endorse the crystalline quality of the material. The vibrational assignments and their functional groups were identified from the FTIR analysis. The UV–Visible NIR study exposes the transparency and cut-off wavelength of the 2MI crystal. The mechanical strength was investigated by Vickers microhardness tester. The surface investigation of the 2MI crystal was analyzed by a scanning electron microscope technique to obtain the presence of defects and surface texture in the developed 2MI crystal. The photoluminescence spectrum confirmed the green light emission of the crystal. The value of the piezoelectric d[Formula: see text] coefficient is measured using piezoelectric analysis. Kurtz powder’s second harmonic generation test reveals that the frequency conversion efficiency of 2MI is 3.7 times higher than that of potassium dihydrogen phosphate (KDP) crystal.
A noncentrosymmetric polymorph of second harmonic generation 2,4 dinitrophenyl hydrazine for nonlinear optical applications: An experimental and theoretical investigation
Authors: Praveen B. , Saravanan M.
Published: January 2024

Potent ocular materials with noncentrosymmetric frameworks seek the attention of researchers throughout the globe. A polymorph of 2,4-dinitrophenylhydrazine single crystals with such framework was grown by slow cooling mechanism with 1,4-dioxane as the solvent. The noncentrosymmetric characteristics of the grown material were confirmed by using X-ray diffraction analysis. The presence of functional groups of the title meld was identified with the aid of Fourier transform infrared spectroscopy analysis. The ability of the material to withstand temperature with weight loss and decomposition peak was determined by using TG/DTA analysis. The transmission window and optical bandgap of the materials were determined by using UV–Vis analysis. The nonlinear optical behavior of the grown crystals was determined with the aid of SHG and Z-scan analysis. The computational analysis was performed using Gaussian 09 software package to investigate various parameters of title meld. Hirshfeld surface analysis was performed using Crystal explorer 17 to quantify the intermolecular interactions of the grown material.
Stochastic higher-order Lakshmanan–Porsezian–Daniel model with cubic-quintic law nonlinearities in the presence of spatio-temporal and chromatic dispersion terms
Authors: Secer Aydin , Bayram Mustafa , Ozisik Muslum
Published: January 2024

This work focuses on deriving optical soliton solutions for the stochastic variant of the higher-order Lakshmanan–Porsezian–Daniel (LPD) model, which incorporates cubic-quintic law nonlinearities alongside chromatic and spatio-temporal dispersion terms. The primary approach chosen for this purpose is the new Kudryashov method (nKM). Initially, bright and dark soliton solutions are derived. The stability of these dark and bright solitons is then verified using the Vakhitov–Kolokolov criterion. Subsequently, the impact of the stochastic term on the bright and dark solitons is examined. As an additional aspect, an investigation has been conducted on the effects of the model parameters, namely, group velocity dispersion and spatio-temporal dispersion terms.
1/2 and 1/3 Subharmonic Resonance Behaviors of a Rotating FG-CNTRC Beam with Geometric Imperfections
Authors: Lin Bai-Chuan , Su Zhen-Ming , Qian Kai , Dong Hao , Liu Peng-Fei
Published: January 2024

This paper aims at investigating 1/2 and 1/3 subharmonic resonances of a rotating functionally graded carbon nanotube-reinforced composite (FG-CNTRC) beam in the presence of geometric imperfections. A general function is introduced to denote three types of imperfections containing sine, global, and local modes. At first, based on the von-Kármán geometric nonlinearity assumption, the forced vibration equation is set up. Then, the Galerkin method and multiple scale method are utilized to study subharmonic resonance behaviors. Finally, coupled effects of FG-CNTRCs, rotating motion, and geometric imperfections on subharmonic resonance responses are investigated. It is found that a specific range of the excitation amplitude and frequency motivates the subharmonic resonance behavior. The coupling of geometric imperfections and geometric nonlinearities generates the 1/2 resonance phenomena, and geometric nonlinearities result in the 1/3 resonance behavior. Both the imperfection mode and amplitude can affect the resonance response and resonance regions. Moreover, in contrast with the 1/3 subharmonic resonance, geometric imperfections produce greater influence on the 1/2 subharmonic resonance.
When are ∨-additive mappings multiplicative?
Authors: Jarboui Noômen , Al Subaiei Bana
Published: January 2024

In the spirit of some earlier studies of the authors, we discuss the alienation problem for ∨-additive and multiplicative mappings. This study enables us to answer two questions that were left open in [B. Al Subaiei and N. Jarboui, On the monoid of unital endomorphisms of a Boolean ring, Axioms 10(4) (2021) 305].
Fusion rules for the fixed point subalgebra of the vertex algebra associated with a non-degenerate and non-positive definite even lattice by an automorphism of order 2
Authors: Tanabe Kenichiro
Published: January 2024

Let [Formula: see text] be the vertex algebra associated with a non-degenerate and non-positive definite even lattice [Formula: see text] and [Formula: see text] the fixed point subalgebra of [Formula: see text] under the action of the automorphism induced from the [Formula: see text]-isometry of [Formula: see text]. We determine the fusion rules for weak [Formula: see text]-modules. As an application of this result, we classify the irreducible weak modules for the fixed point subalgebra of [Formula: see text] under the action of the automorphism induced from an isometry of [Formula: see text] of order [Formula: see text]. We also show that every weak module for the same fixed point subalgebra is completely reducible.
Jordan derivations on triangular algebras and trivial extensions
Authors: Ahsani Maryam , Ramezanpour Mohammad
Published: January 2024

In this paper, we provide a necessary and sufficient condition for a class of trivial extensions so that each Jordan derivation on such algebras can be written as the sum of a derivation and an antiderivation. Among other things, we obtain some of the known results concerning the Jordan derivations on trivial extensions with fewer assumptions. Also, as a generalization of a well-known result on triangular matrix algebras, we show that every Jordan derivation from arbitrary triangular algebra into its certain bimodule is the sum of a derivation and an antiderivation. We also apply our results for upper triangular matrix algebra [Formula: see text], matrix algebra [Formula: see text] and the nest algebra [Formula: see text] to describe the Jordan derivations into their bimodules.
Certain linear isomorphisms for hyperalgebras relative to a Chevalley group
Authors: Yoshii Yutaka
Published: January 2024

Let [Formula: see text] be a simply connected and simple algebraic group defined and split over a finite prime field [Formula: see text] of [Formula: see text] elements. In this paper, using an [Formula: see text]-linear map splitting Frobenius endomorphism on a hyperalgebra relative to [Formula: see text], we obtain some [Formula: see text]-linear isomorphisms induced by multiplication in the hyperalgebra.
Zassenhaus filtrations and right-angled Artin groups
Authors: Trà Nguyên Thị
Published: January 2024

We determine the restricted Lie algebra associated with the Zassenhauss filtration of a right-angled Artin group. We also provide another proof for a result of Koberda saying that the graph is uniquely determined by the first and second cohomology groups, together with the cup product, of the associated right-angled Artin group.