bluuebunny/crossref_metadata_2025_split huggingface dataset:
Open-loop response of Fischer–Tropsch reactions to manipulation of temperature and pressure
Authors: Piña-Contreras Salvador , Jiménez-García Gladys , Hernández-Escoto Héctor , Maya-Yescas Rafael 
Published: November 2024

Abstract
In the present work, the Fischer–Tropsch synthesis (FTS) is carried out through simulation. This reaction uses a gas mixture, called synthesis gas, composed of carbon monoxide rich in hydrogen (H2/CO > 2.5), to form medium and long chain hydrocarbons (C5
+). For the modeling of this system, a packed bed reactor with a cobalt-based catalyst has been considered, which promotes the polymerization of methylene species, selective to linear paraffins and 1-olefins. The objective of this work is evaluating the impact of operation variables, such as feed flows and temperature, coolant flow, system pressure, on the chain length distribution of the products. Current operating policies does not promote selectivity to the production of synthetic gasolines (C5–C12), because of the drastic increase in the temperature inside the reactor as consequence of the high exothermicity of the reactions (ΔH = −170 kJ mol−1). It has been impossible to maintain these reactions within the appropriate temperature range (475–520 K) without the presence of an external agent that manages the available heat, for this project molten sales have been proposed as a cooling medium (KNO3–NaNO3), based on its favorable heat transfer characteristics. By analyzing the system responses, the open loop model has allowed us to explore multiple hydrocarbon production scenarios, specifically highlighting the increasing of the yield of synthetic gasoline (48 wt%) in the products, from a defined molten salts (coolant) countercurrent flow range (7.05E-2 at 2.50E-1 m/h). It was noticed that this heat management allowed us to obtain a specific range of hydrocarbons, representing the opportunity to control the growth of the chain length. In conclusion, this analysis will lay the foundations for the design control policies, which help to increase current yields of synthetic gasoline, making it possible to achieve the desired quality for the immediate future.
Influence of topic-prominent L1s on the use of L2 English copula be: a corpus-based study
Authors: Sung Min-Chang , Kim Kitaek , Nam Bora 
Published: November 2024

Abstract
This study explores the influence of first language (L1) on the acquisition of second language (L2) English, specifically examining the use of copula be as a topic marker. Although prior research suggests that L1 transfer may impact L2 acquisition of copula be, the evidence remains inconclusive. To address this issue, the study analyzes the use of be in L2 English spoken by learners with topic-prominent L1s (viz., Mandarin Chinese, Japanese, Korean) and those with non-topic-prominent L1s (viz., Filipino). Using the ICNALE corpus, the study investigates whether L1 topic-prominence affects the use of be in L2 English. The findings reveal that L2-English learners with topic-prominent L1s use copula be more often with definite NPs than those with non-topic-prominent L1s, indicating the influence of L1 topic-prominence properties on the use of copula be. Additionally, learners from topic-prominent L1s more frequently produce nontargetlike topic-comment structures using be verb (e.g., restaurant is many people eat their foods). Based on these findings, the study discusses the implication of L1 transfer effects in L2 acquisition and emphasizes the importance of a more global and refined understanding of language variation in L2 teaching and learning.
Text mining of syntactic complexity in L2 writing: an LDA topic modeling approach
Authors: Huang Zhiyun , Jiang Zhanhao 
Published: November 2024

Abstract
The present study provides an overview of syntactic complexity (SC) in second language (L2) writing research, employing the Latent Dirichlet Allocation (LDA) topic modeling approach. Analyzing 470 abstracts sourced from the WoS Core Collection (2005–2023) and Scopus (1978–2023), this investigation explores the broad spectrum of research themes in SC in L2 writing. By employing perplexity and coherence tests, the study identifies the optimal number of topics in the model as five: writing quality, proficiency, genres, SC development, and task-based conditions. The finding reveals that: (1) In cross-sectional studies, the interplay among writing quality, proficiency levels, and genres often involves studying one variable as reliant on the others. Additionally, there is a growing inclination toward regarding phrasal structures as more dependable complexity indicators. (2) Longitudinal investigations predominantly emphasize the evolution of SC, yet there’s a scarcity of exploration in continuation writing tasks. (3) Regarding measurement metrics, a transition from broader SC evaluations to more intricate assessments is evident, though several studies lack thorough examinations, particularly in continuation tasks.
Comparative performance of PPP software packages in atmospheric delay estimation using GNSS data
Authors: Nagib Reham , Abdelfatah Mohamed A. , Mousa Ashraf K. , EL-Fiky Gamal S. 
Published: November 2024

Abstract
This study utilizes Precise Point Positioning (PPP) for accurate GNSS-based positioning with a single receiver. Seven PPP techniques (GAPS, APPS, CSRS, Magic-GNSS, gLAB, Pride, GAMP) are evaluated for zenith tropospheric delay (ZTD) estimates, comparing them with Radiosonde (RS) and Radio Occultation (RO) data from the same day (36th in 2014). RO data is categorized based on RO Events (ROE) – GNSS observation distances (10 km, 50 km, 50:100 km), while RS data is limited to three stations (ASWN, FARF, PHLW). Generally, the differences among PPP techniques are within 5 cm, except for PRIDE-PPPAR, which exhibits semi-constant zenith wet delay (ZWD) values. Root Mean Square (RMS) and t-test comparisons with RO data reveal that APPS has the lowest RMS values for ZWD at 10 km, while CSRS-PPP performs well with increasing distance. Magic-GNSS demonstrates the highest RMS values at 10: 50 km, while APPS at 50:100 km. RMS values typically increase with greater ROE-GNSS distances, except for Magic-GNSS, which decreases. t-tests indicate statistically insignificant differences across PPP techniques, except for APPS and gLAB in the 50:100 km case. Comparisons with RS data indicate that CSRS-PPP achieves the lowest RMS values for ZWD at ASWN and PHLW, while Magic-GNSS and CSRS-PPP excel at FARF. However, Magic-GNSS, GAMP, GAPS, and Pride yield the highest RMS values at ASWN (00:00), (12:00), FARF, and PHLW, respectively. t-tests show statistically insignificant differences across PPP techniques for the three stations, except for APPS and Pride at ASWN and gLAB at PHLW. These findings demonstrate that CSRS-PPP consistently provides reliable ZWD assessments across various conditions, contributing to enhanced accuracy in GNSS-based atmospheric studies. The comparison of PPP techniques offers valuable insights into the strengths and limitations of each method, with implications for improving atmospheric modeling, positioning applications, and broader GNSS-based research in weather forecasting and climate monitoring.
A family-centric, comprehensive nurse-led home oxygen programme for neonatal chronic lung disease: home oxygen policy evaluation (HOPE) study
Authors: Legge Nele , Fitzgerald Dominic , Stack Jacqueline , Popat Himanshu 
Published: November 2024

Abstract

Objectives
Considerable variation and little objective evidence exists to guide the use of supplemental oxygen therapy in infants with neonatal chronic lung disease (nCLD) after hospital discharge. We developed a new policy utilizing regular oximetry downloads to help determine commencement and titration of low flow oxygen. The aim of this policy is to improve safety and uniformity in practice and potentially lead to improvements in outcomes including the number of infants being discharged on home oxygen therapy (HOT) and length of stay (LOS).

Methods
This single-centre pre- and post-implementation study included 86 and 94 infants <32 weeks’ gestation (pre- vs. post-implementation) meeting definition of nCLD. The primary outcomes were (1) successful implementation of the new policy, (2) changes in number of patients discharged on HOT and (3) in LOS. Secondary outcomes were changes in feeding mode at discharge, total length of HOT, readmission to hospital within the first year of life and neurodevelopmental outcomes at 8 months post menstrual age amongst infants treated with HOT.

Results
The policy was successfully implemented with 100 % of infants with nCLD receiving downloads in the post-implementation epoch. Pre-implementation 36 % (31 of 85) of infants with nCLD were treated with HOT vs. 17 % (16 of 94) post-implementation (p=0.03). There was no significant difference in LOS or any of the secondary outcomes.

Conclusions
A protocolised approach to decision making using predetermined parameters regarding the need for supplemental oxygen in neonates with nCLD is practical and achievable and may result in fewer neonates requiring HOT.
Notiz über eine Kantplakette von 1924
Authors: Kulenkampff Jens 
Published: November 2024

Abstract
In 1924 the artist Luise Staudinger issued a bronze medal featuring a portrait of Kant on one side and a famous passage from Kant on the other: “Two things fill the mind with ever new and increasing admiration and reverence […]: the starry heavens above me and the moral law within me.” To this Staudinger added an illustration of a naked young man kneeling with outstretched arms, described by the artist as a man in prayer. Yet this does not seem to fit the meaning of Kant’s words. This paper shows that Luise Staudinger was implicitly referring to her father, Franz Staudinger. In his writings, Staudinger taught that he who truly lives up to the moral law always does what he ought to do out of his own free will and with devotion. It is in fact devotion (Hingabe) that is the key to Luise Staudinger’s illustration. The young man is not in prayer; instead, the figure symbolizes a state of mind, namely obedience to the moral law out of devotion to it.
Dissertatio 15C revisited: Concept and Body in Kant’s Problems of Directionality
Authors: Villaverde López Guillermo 
Published: November 2024

Abstract
This article focuses on the relationship between Kant’s reference to our own body in the context of problems of directionality and the type of resources that, according to him, are necessary to distinguish left and right and to orient ourselves in space. It challenges the almost universally accepted idea that the principle formulated in Dissertatio 15C (namely, that two incongruent counterparts cannot be distinguished by notae) is fatally flawed. While arguing that this principle is correct in its strongest formulation, the article offers a unified line of reasoning that runs precisely from Dissertatio 15C to the presence of the body in 1768/1786 and extends to include several important features of the Transcendental Aesthetic of the first Critique. The final part of the paper explores some of the implications of this reading for Kant’s theory of space and its development.
Zeros distribution and interlacing property for certain polynomial sequences
Authors: Guo Wan-Ming 
Published: November 2024

Abstract
In this article, we first prove that the Hankel determinant of order three of the polynomial sequence

{

P

n

(

x

)

=

∑

k
≥
0

P

(

n
,
k

)

x

k

}

n
≥
0

{\left\{{P}_{n}\left(x)={\sum }_{k\ge 0}P\left(n,k){x}^{k}\right\}}_{n\ge 0}

is weakly (Hurwitz) stable, where

P

(

n
,
k

)

P\left(n,k)

satisfies the recurrence relation

P

(

n
,
k

)

=

(

a

1

n
+

a

2

)

P

(

n
−
1
,
k

)

+

(

b

1

n
+

b

2

)

P

(

n
−
1
,
k
−
1

)

,

P\left(n,k)=\left({a}_{1}n+{a}_{2})P\left(n-1,k)+\left({b}_{1}n+{b}_{2})P\left(n-1,k-1),

with

P

(

n
,
k

)

=
0

P\left(n,k)=0

wherever

k
∉

{

0
,
1
,

…

,
n

}

.

k\notin \left\{0,1,\ldots ,n\right\}.

The stability of a polynomial is closely associated with the interlacing property, which is based on the Hermite-Biehler theorem. We also show the interlacing property of the polynomial sequence

(

U

n

(

x

)

)

n
≥
0

,

{\left({U}_{n}\left(x))}_{n\ge 0},

which satisfies the following recurrence relation:

U

n

(

x

)

=

(

α

n

x
+

β

n

)

U

n
−
1

(

x

)

+

(

u

n

x

2

+

v

n

x

)

U

n
−
1

′

(

x

)

{U}_{n}\left(x)=\left({\alpha }_{n}x+{\beta }_{n}){U}_{n-1}\left(x)+\left({u}_{n}{x}^{2}+{v}_{n}x){U}_{n-1}^{^{\prime} }\left(x)

based on the Hermite-Biehler theorem. As applications, we obtain the weak (Hurwitz) stability of the Hankel determinant of order three for the row polynomials of the (unsigned) Stirling numbers of the first kind, the Whitney numbers of the first kind, and show the interlacing property of Eulerian polynomials, Bell polynomials, and Dowling polynomials.
Crystal structure of 4,4′-bis(dibromomethyl)-1,1′-biphenyl, C14H10Br4
Authors: Zhong Kai-Long , Zhou Yue , Zhang Tian-Yu , Yang Chao-Bo 
Published: November 2024

Abstract
C14H10Br4, tetragonal, P43212 (no. 96), a = 6.8288(8) Å, c = 31.988(6) Å, V = 1491.7(5) Å3, Z = 4, R
gt(F) = 0.0540, wR
ref(F
2) = 0.1479, T = 193 K.
Analysis of variable fluid properties for three-dimensional flow of ternary hybrid nanofluid on a stretching sheet with MHD effects
Authors: Yasmin Humaira , Ullah Jan Saeed , Khan Umar , Islam Saeed , Ullah Aman , Muhammad Taseer 
Published: November 2024

Abstract
This study presents a novel model for variable fluid properties of a ternary hybrid nanofluid with base fluid polymer suspended on a three-dimensional stretching sheet under the influence of magnetohydrodynamic forces. Viscosity and thermal conductivity are temperature-dependent. This model has potential for use in nanotechnology, particularly in the shaping and design of surfaces for devices that can stretch or contract, wrap, and paint. The nonlinear equations in charge of this physical problem are derived by using similarity transformations. The fluid behavior is examined using the Reynolds viscosity model. The coupled nonlinear governing equations and the necessary boundary conditions are solved using the shooting technique with RK-4. The numerical calculations, including velocity and temperature profiles, are presented graphically to give the results a physical interpretation. The table discusses skin friction and Nusselt numbers at various physical parameters. The study’s findings show that changing the stretching parameter causes a significant change in the flow characteristics. Particularly, the thickness of the boundary layer decreases as the volume fraction of nanoparticles rises. Furthermore, because temperature-dependent viscosity is taken into account, as the viscosity parameter increases, so does the temperature. Key results specify that the Nusselt number

Nu

{\rm{Nu}}

increases with the increase in temperature-dependent viscosity

α

\alpha

, while decreases with the increase in thermal conductivity

ϵ

\epsilon

parameters. Impact of

α

\alpha

shows more convective heat transfer. Greater values of

ϵ

\epsilon

reduce the effectiveness of heat transfer.
Enhancing geographical access to cardiovascular disease healthcare services in Lagos State, Nigeria
Authors: Addie Oluwaseun , John Taiwo Olalekan 
Published: November 2024

Abstract
Cardiovascular diseases (CVDs) are the leading cause of global mortality, and three-quarters of the world’s deaths from CVDs occur in low- and middle-income countries. Improving spatial access to care facilities is a way of reducing the disease burden through early detection and treatment. Determining the number of facilities to provide and the locations in order to improve accessibility is central to healthcare facility planning. The maximal covering location problem (MCLP) was used in the identification and determination of where to place additional CVD treatment facilities in Lagos State for better accessibility. The primary objective of this study was to optimize the placement of CVD facilities to maximize coverage for both patients and non-patients alike. The optimization model utilized data on the population of Lagos State, the locations of CVD patients, the location of existing CVD care facilities, and the locations of general hospitals (GHs) within the state. The MCLP implementation was carried out using the maxcovr. The results of the models indicated that the addition of two facilities at the Isolo and Ile-Epo GHs would enhance CVD patient coverage from 70 to 87.4%, reducing the average travel distance from 9,038 to 6,466 m. Similarly, the introduction of two facilities at the Ikorodu and Ajegunle GHs improved population coverage from 40.3 to 70.8%, reducing the average travel distance of 18,788 m by over 5,000 m. These findings are expected to offer valuable insights for public health decision-makers who face the challenge of prioritizing limited budgets.
Bridging the gap: The role of geographic proximity in enhancing seed sustainability in Bandung District
Authors: Saidah Zumi , Wulandari Eliana , Hapsari Hepi , Alamsyah Raden Trizaldi Prima , Carsono Nono , Kawashima Shigekazu , Kang Seung Won 
Published: November 2024

Abstract
Climate change poses mounting challenges to agriculture in the Bandung District, Indonesia, and across the Global South. Seeds are the foundation of resilient food systems, and sustainable seed systems are essential for adaptation. This study offers a unique, holistic investigation of seed sustainability within the Bandung District. Utilizing multidimensional scaling and an independent t-test on a surveyed sample of 100 farmers across 8 villages, we analyze the interwoven social, economic, ecological, institutional, and technological dimensions shaping seed sustainability within the region. A core finding reveals the impact of geographic proximity to the government center on economic sustainability within the seed systems. Further, this analysis demonstrates the importance of policies promoting decentralized agricultural support, enhanced seed-saving infrastructure, and accessible farmer education programs to promote farmer agency, food security, and district-wide agricultural resilience. Findings transcend the context of Bandung, informing sustainable seed development practices in both regional and global contexts.
Adapting to heat-health vulnerability in temperate climates: current adaptation and mitigation responses and future predictions in Aotearoa New Zealand
Authors: Muhamad Siti Nurfahirah , Mohd Shabri Nur Shabrina Azreen , Cotter James David , Bolton Annette , How Vivien , Lim Fang Lee , Md Akim Abdah , Karuppiah Karmegam 
Published: November 2024

Abstract

Introduction
Climate change is raising global temperatures, leading to more extreme heat events, even in temperate climates like Aotearoa|New Zealand (A|NZ). The impact of rising temperatures and the adequacy of planning measures remain underexplored. This paper highlights A|NZ’s anticipated heat-health challenges by analyzing vulnerable populations and assessing current response systems, thereby reinforcing the need for system-level redress, mitigation and adaptation.

Content
A scoping review examined the impact of heat and existing mitigation and adaptation responses for vulnerable populations in temperate regions, with a focus on A|NZ. Additionally, temperature trend analysis was conducted for current and projected trends using Climate CHIP for six major heat-affected cities in A|NZ to assess the recognition of heat as a societal concern.

Summary and Outlook
The review identified mitigation and adaptation strategies for existing vulnerable groups and discovered other potential vulnerable groups in A|NZ, including Indigenous people (Māori), Pacific communities, low-income groups, migrants, and visitors. Temperature trends show an increasing pattern, suggesting heightened future heat-related impacts on these populations. This review reveals A|NZ’s growing vulnerability to rising temperatures, particularly among high-risk groups, and calls for stronger mitigation and adaptation strategies to address future heat-health risks.
Magnetic nanoparticles for efficient heavy metal removal: synthesis, adsorption capacity, and key experimental parameters
Authors: Hawezy Hawar J. Sadiq , Qader Aryan Fathulla , Omer Rebaz A. , Ali Layth I. Abd 
Published: November 2024

Abstract
Heavy metals are toxic, non-biodegradable pollutants that pose serious risks to human health and the environment, even at trace concentrations. The contamination of drinking water and groundwater by heavy metals requires urgent attention. Nanotechnology has advanced significantly over the past decade, offering innovative solutions for water purification, particularly through the adsorption of heavy metal ions using nanomaterials. This study focuses on the synthesis of magnetic nanoparticles, their adsorption capacity, and the desorption process. Additionally, the effects of key experimental parameters – such as contact time, ion concentration, pH, temperature, ionic strength, and adsorbent dose – on the removal efficiency of metal ions are examined. The findings underscore the potential of magnetic nanoparticles for effective heavy metal remediation in water.
Involvement of the VGF/BDNF axis in the neuropathology of Alzheimer’s disease and its potential role in diagnosis and treatment
Authors: Colín-Martínez Elizabeth , Arias Clorinda 
Published: November 2024

Abstract
The brain is a highly plastic organ that continually receives and integrates signals to generate functional and structural changes and homeostatic adaptations throughout life. Alterations in some signaling pathways that mediate these responses can impact brain plasticity, accelerate brain aging and potentially lead to neurodegeneration. There is substantial evidence that two important signaling pathways activated by neurotrophins, nonacronymic (VGF) and brain-derived neurotrophic factor (BDNF), are involved in substantial functions stimulating neuronal growth, differentiation, and circuit establishment during development and neuronal maintenance and plasticity in the mature brain. In this review, we present evidence that these two pathways and their interactions are central players in cognitive performance and alterations in pathological aging, particularly in conditions such as Alzheimer’s disease (AD). Finally, we suggest specific avenues for future research on the basis of recent findings suggesting these molecules are diagnostic biomarkers and putative therapeutic tools to prevent, delay or improve AD neuropathology.
Historical narrative and enrichment of the meaningful horizon of cultural worlds
Authors: Gubman Boris , Anufrieva Karina 
Published: November 2024

Abstract
Built on the results of collective experience expressed in language, cultural worlds are given to each of their inhabitants as integral ensembles constantly developing on the basis of unlimited semiosis via communication. Rooted in the very way of human intersubjectivity, communicative ability, and existence in time, historical narration serves as an important tool for increasing the meaningful potential and diachronic depth of cultural worlds. It should have integrity, thematic and plot certainty, problematic character, a chronotope system chosen by the author, as well as an efficient intrigue and composition focused on the intended reader who is able to decode its content. The historical narrative, unlike the literary one, should be based on truthful and reliable empirical data, despite the fact that the linguistic description in both cases assumes a connection between the past and the present. The historical narratives themselves, from the point of view of their epistemological status, have only greater or lesser reliability, since they depend on the interpretative intentions of their authors. The unpredictability of an event may trigger a confrontation between different kinds of narratives, undermining the power of the existing Encyclopedia that describes a cultural world. This problem can be fruitfully approached today on a cooperative platform of hermeneutics, semiotics, and analytical philosophy.