bluuebunny/crossref_metadata_2025_split huggingface dataset:
Determination of the effect of bitter gourd (Momordica charantia L.) seed oil on the oxidative stability of sunflower oil
Authors: Dedebaş Tuğba 
Published: January 2024

Abstract
The effects of bitter gourd seed oil (Momordica charantia) the storage stability of sunflower oil were examined in the present study. The effects of oxidation and those of the bitter gourd addition on the quality characteristics of the sunflower oils were determined by using classical and spectrophotometric methods during thermal oxidation. The changes of sunflower oil samples added with different concentrations (10 and 20 %) of bitter gourd seed oil were found in Raman and Fourier transform infrared spectroscopy and it was also observed that there was an increase due to secondary oxidation products forming during the storage. Furthermore, the oxidation of sunflower oils was comparatively examined by using nuclear magnetic resonance spectroscopy. As a result of both classical and spectrophotometric analyses, it was determined that the addition of 10 % bitter gourd seed oil enhanced the storage stability of sunflower oil.
Note on bounds on the coefficients of a subclass of m-fold symmetric bi-univalent functions
Authors: Zireh Ahmad , Hajiparvaneh Saideh , Bulut Serap 
Published: January 2024

Abstract
In this paper, we introduce and investigate a subclass of analytic and
bi-univalent functions which both

f
⁢

(
z
)

{f(z)}

and

f

-
1

⁢

(
z
)

{f^{-1}(z)}

are m-fold
symmetric on the open unit disk. Furthermore, we find upper bounds for the
initial coefficients

|

a

m
+
1

|

{|a_{m+1}|}

and

|

a

2
⁢
m

+
1

|

{|a_{2m+1}|}

for functions in this
subclass. The results presented in this paper generalize and improve some
recent works
Multiplicative 𝔪-metric space, fixed point theorems with applications in multiplicative integrals equation and numerical results
Authors: Yadav Kapil , Kumar Deepak 
Published: January 2024

Abstract
The objective of this manuscript is to introduce the notion of multiplicative

𝔪

{\mathfrak{m}}

-metric space, inspired by the concepts of multiplicative metric space and

𝔪

{\mathfrak{m}}

-metric space. We propose a generalized notion of the distance function known as the multiplicative

𝔪

{\mathfrak{m}}

-metric. Firstly, we present the fundamental definitions for the multiplicative

𝔪

{\mathfrak{m}}

-metric space, then delve into the topological aspects, including the convergence of sequences and completeness. Additionally, we provide various illustrations to support our discussion. We also generalize some well-known contraction mappings and prove fixed point theorems on the complete multiplicative

𝔪

{\mathfrak{m}}

-metric space. To complement our findings, we have included numerical results along with graphs to provide visual support for our conclusions. Furthermore, we explore the potential of utilizing the multiplicative

𝔪

{\mathfrak{m}}

-metric to demonstrate the existence of the solution to a multiplicative integral equation.
The algebraic entropy of one-dimensional finitary linear cellular automata
Authors: Akın Hasan , Dikranjan Dikran , Giordano Bruno Anna , Toller Daniele 
Published: January 2024

Abstract
The aim of this paper is to present one-dimensional finitary linear cellular automata 𝑆 on

Z
m

\mathbb{Z}_{m}

from an algebraic point of view.
Among various other results, we (i) show that the Pontryagin dual

S
̂

\hat{S}

of 𝑆 is a classical one-dimensional linear cellular automaton 𝑇 on

Z
m

\mathbb{Z}_{m}

; (ii) give several equivalent conditions for 𝑆 to be invertible with inverse a finitary linear cellular automaton; (iii) compute the algebraic entropy of 𝑆, which coincides with the topological entropy of

T
=

S
̂

T=\hat{S}

by the so-called Bridge Theorem.
In order to better understand and describe entropy, we introduce the degree

deg
⁡

(
S
)

\deg(S)

and

deg
⁡

(
T
)

\deg(T)

of 𝑆 and 𝑇.
Inverting mechanical and variable-order parameters of the Euler–Bernoulli beam on viscoelastic foundation
Authors: Cheng Jin , Yang Zhiwei , Zheng Xiangcheng 
Published: January 2024

Abstract
We propose an inverse problem of determining the mechanical and variable-order parameters of the Euler–Bernoulli beam on viscoelastic foundation. For this goal, we develop a fully-discrete Hermite finite element scheme for this model and analyze the corresponding error estimates. The Levenberg–Marquardt method is then applied to determine the multiple parameters. Extensive numerical experiments are performed under practical settings to demonstrate the behavior of the proposed model and the efficiency of the algorithm.
Green chemistry route to chitosan hydrogels and investigation of the materials as efficient dye adsorbents
Authors: Njuguna Dennis Gitau , Schönherr Holger 
Published: January 2024

Abstract
Biopolymer-based materials for the adsorption of toxic dyes represent an interesting class of materials for environmental applications. Here we report on chitosan as the starting material for synthesizing dye adsorbents. In particular, the synthesis, characterization, and cationic dye adsorption properties of chitosan hydrogel adsorbents are reported. Polyanionic itaconated chitosan derivatives were synthesized in solvent-less conditions for the first time. Itaconated chitosan was cross-linked using thiol-ene chemistry to obtain hydrogels. The influence of the incorporated carboxylate groups and the cross-linker fraction on the adsorption of Methylene Blue (MB) was investigated. In addition, the impact of pH, adsorbent dose, initial concentration, and ionic strength were investigated to determine the optimum conditions for MB uptake, and the dye uptake kinetics, adsorption isotherms, selectivity, and reusability of the adsorbents were unveiled. A maximum adsorption capacity of 556 mg/g could be achieved, outperforming commercial activated charcoal and ion exchange resins. Furthermore the chitosan hydrogel adsorbents were shown to capture >90 % of cationic MB from a binary equimolar mixture with the anionic dye Methyl Orange. Since the adsorbents can be regenerated and re-used afterwards at least 20 times, retaining a high dye adsorption fraction of >95 %, these materials are promising candidates for environmental applications.
Continuum percolation of the realistic nonuniform ITZs in 3D polyphase concrete systems involving the aggregate shape and size differentiation
Authors: Lin Jianjun , Wang Yue , Li Mingqi , Chen Huisu , Cao Haiying , Jing Chao 
Published: January 2024

Abstract
The interfacial transition zone (ITZ) percolation is an effective parameter reflecting the connectivity of ITZs in cementitious materials, and its emergence may accelerate the penetration of inimical ions. In the existing literature on ITZ percolation, aggregates are generally simplified as the identical-shaped particles and the thickness of the ITZ phase around them is set to be uniform, which differs greatly from the realities and may cause the large deviation. To determine the ITZ percolation with the response of different phases in a more realistic way, a more satisfying three-dimensional (3D) polyphase model of concrete is developed, in which the convex ovoids and polyhedrons are separately adopted to represent the sands and gravels. The realistic nonuniform ITZ is also assigned for these aggregates based on their specific sizes and the W/C for the cement matrix. By coupling these models with the continuum percolation theory in statistical physics, the influence of individual phases on the global percolation threshold ϕ
agg,c of ITZs is further studied by the simulation. The results reveal that the models here provide a smaller percolation threshold ϕ
agg,c than the previous prediction models containing the simplistic uniform ITZs. There is reason to believe that these results in the work would be closer to the actual threshold in the realistic circumstance.
Popular Sentiments and Political Failures: Understanding the Disintegration of the Republic of Moldova, 1989–1990
Authors: Solonari Vladimir 
Published: January 2024

Abstract
This article revisits the foundational years of 1989–1992 when the Republic of Moldova obtained its independence and simultaneously suffered territorial losses due to separatist movements. The quasi-official view in today’s Moldova holds that separatist movements of that era in Transnistria and Gagauzia were the results of Moscow’s meddling in Moldovan affairs aimed at punishing the Moldovans’ quest for independence. The paper argues that this interpretation attributes too much power to the decision-makers in Moscow, and also strips local actors of agency. Instead, the article calls for a renewed focus on the developments in Moldova itself and for discourses developed by separatist leaders and opinion-setters to be treated as representative of genuine popular sentiment. It argues that the Moldovan national movement alienated the non-Moldovan population whose primary means of communication was Russian. The article relies on personal recollections as well as numerous published primary and secondary sources.
Widening “Ground-Up” Nationalism: Some Reflections on Religion and Gender in the Republic of Moldova
Authors: Cash Jennifer 
Published: January 2024

Abstract
This article argues that although the study of nationalism and nation-building in the post-Soviet Republic of Moldova has included many ground-up perspectives on ethnic, linguistic, cultural, and memory-related aspects of national identity, the themes of religion and gender continue to be neglected. Over the past decade, attention to religion has been increasing—not least because of concern that the growing presence of Orthodoxy in the public sphere might endanger the state’s commitments to civic and human rights—yet what is still lacking is a considered discussion of religion and nationalism. The author considers how the 2017 Soros-published report on Church and State in the Republic of Moldova may spur us to better conceptualize the dynamics of religion and gender with respect to nationalism from the ground up.
Z-Propaganda and Semiotic Resistance: Contesting Russia’s War Symbols in Moldova and Beyond
Authors: Marandici Ion 
Published: January 2024

Abstract
This article examines the range of strategies adopted by various states vis-à-vis the symbols of the Russian war against Ukraine—the St. George ribbon and the letters Z and V. First, it analyzes their genealogy, illustrating how the St. George ribbon reflects Russia’s new authoritarian-imperial identity, while the Z and V originate from ultranationalist Telegram communities promoting white supremacist and genocidal ideas. Second, the concept of semiotic resistance is proposed to explain how states and societies counter Russia’s pro-war narratives by implementing diverse semiotic strategies. Finally, the in-depth analysis of the identity politics accompanying the symbolic ban in Moldova reveals how competing definitions of nationhood lead to divergent assessments of Russia’s war narratives. The dispute over the St. George ribbon in Moldova is embedded in longstanding domestic culture wars, fought in the legal-political domain as well as in urban spaces.
Subthalamic Activity for Motor Execution and Cancellation in Monkeys
Authors: Polyakova Zlata , Hatanaka Nobuhiko , Chiken Satomi , Nambu Atsushi 
Published: January 2024

The subthalamic nucleus (STN) receives cortical inputs via thehyperdirectandindirectpathways, projects to the output nuclei of the basal ganglia, and plays a critical role in the control of voluntary movements and movement disorders. STN neurons change their activity during execution movements, while recent studies emphasize STN activity specific to cancellation of movements. To address the relationship between execution and cancellation functions, we examined STN activity in two Japanese monkeys (Macaca fuscata, both sexes) who performed a goal-directed reaching task with a delay that included Go, Cancel, and NoGo trials. We first examined responses to the stimulation of the forelimb regions in the primary motor cortex and/or supplementary motor area. STN neurons with motor cortical inputs were found in the dorsal somatomotor region of the STN. All these STN neurons showed activity changes in Go trials, suggesting their involvement in execution of movements. Part of them exhibited activity changes in Cancel trials and sustained activity during delay periods, suggesting their involvement in cancellation of planed movements and preparation of movements, respectively. The STN neurons rarely showed activity changes in NoGo trials. Go- and Cancel-related activity was selective to the direction of movements, and the selectivity was higher in Cancel trials than in Go trials. Changes in Go- and Cancel-related activity occurred early enough to initiate and cancel movements, respectively. These results suggest that the dorsal somatomotor region of the STN, which receives motor cortical inputs, is involved in preparation and execution of movements and cancellation of planned movements.Significance StatementThe dorsal somatomotor region of the subthalamic nucleus, which receives motor cortical inputs, is important for motor control: Its lesion induces abnormal involuntary movements known as hemiballism; its increased and/or oscillatory activity is observed in Parkinson's disease; and its coagulation or deep brain stimulation ameliorates parkinsonian symptoms. Here, we examined neuronal activity of this region in monkeys while they performed a reaching task with a delay including Go, Cancel, and NoGo trials and demonstrated that its activity is involved in multiple motor functions: preparation and execution of movements and cancellation of planned movements. The present results will benefit our understanding of the neuronal mechanism of STN-related movement disorders and their better therapeutics targeting the STN in the near future.
Two-year prognosis of multinodular goiter following radiofrequency ablation based on all nodule burdens
Authors: Guo Rui , Zheng Bowen , Wu Tao , Lian Yufan , Yin Tinghui , He Yuting , Qin Jingya , Yao Zhicheng , Xu Wen , Ren Jie 
Published: January 2024

Objective
Few studies use all nodule burdens to specify the prognosis of multinodular goiter (MNG) following radiofrequency ablation (RFA), so this study addresses this question for MNG after completely ablating dominant nodules.

Methods
The RFA indications for MNG include 2–5 benign nodules with over 50% normal tissue on ultrasound, 1–3 well-defined benign dominant nodules on cytology, largest diameter ≥20 mm and/or with clinical complaints, and patient refusal or unable to undergo surgery. A retrospective study of 185 MNG patients with completely ablated dominant nodules in a single-session RFA was conducted. The efficacy and complications were evaluated at 1, 6, 12 months, and yearly thereafter. Based on retreatment risks, progressive disease (PD), stable disease (SD), and complete relief (CR) were introduced to assess all nodule load changes. PD was clarified as having new/non-target nodules that newly appeared to ACR TI-RADS≥4, or new/enlarged non-target nodules ≥1 cm.

Results
The initial ablation ratios of target nodules were 100% at one month. During a mean 22.38 ± 13.75 months (range, 12–60 months), the volume reduction rate of ablated nodules was 98.25% at 24 months without regrowth. Cosmetic and symptomatic scores decreased to 1 and 0, respectively, after 48 months. Of the patients, 9.7% (18/185) had PD and the retreatment rate was 2.2% (4/185). The complication rate was 2.7% (5/185).

Conclusion
RFA provides cosmetic and symptomatic relief for an average of two years. RFA is a useful minimally invasive treatment modality for selected MNG patients.
Turkish Pre-Service Teachers’ Perceptions of Factors Influencing Physics Problem-Solving Abilities
Authors: Saka Ahmet Zeki , Ebenezer Jazlin , Saka Tolga 
Published: January 2024

The purpose of this study was to identify the the factors that influenced pre-service teachers' perceptions of their abilities to solve structured physics problems. 1185 pre-service teachers from different disciplines, enrolled in physics courses in one Turkish University from 2008 to 2017 participated in a descriptive survey. The factors influencing the pre-service r physics problem-solving abilities, ranking from most to least, were as follows: personal characteristics; quality of secondary or university physics teaching; secondary school physics education, and physics learning environment. The study implies the need for: (i) equal opportunities; (ii) knowledge integration; and (iii) learning affordances, which are relevant not only to Turkey but also to worldwide physics education.
Shadow banking versus secondary shadow banking – The case of Hungary
Authors: Bethlendi András , Mérő Katalin 
Published: January 2024

AbstractIn this article we analyze the Hungarian shadow banking system. We point out that the Hungarian shadow banking system is not only much less developed than that of the EU's developed countries, but also structurally different. A further specific feature of the Hungarian financial system is what we call the secondary shadow banking system, through which foreign shadow banking funds do not finance the domestic banking system directly, but through foreign interbank funds and related cross currency basis swaps. The aim of our analysis is to explore the reasons for these specificities, to analyze the risks of the Hungarian shadow banking, and secondary shadow banking systems, and to show that the interconnectedness between banking and shadow banking may not only occur through direct exposure, but also indirectly through the presence of secondary shadow banking.
Chronic coronary artery disease: regional characteristics of outpatient visits and hospitalizations of the Russian adult population
Authors: Shepel R. N. , Svishcheva A. A. , Lusnikov V. P. , Kontsevaya A. V. , Drapkina O. M. 
Published: January 2024

Aim. To analyze hospitalizations and outpatient visits to primary health care facilities of patients aged 18 years and older with chronic coronary artery disease (CAD) by federal districts and the constituent entities of the Russian Federation from the perspective of the World Health Organization concept for diseases treating mainly on an outpatient basis.Material and methods. We used data from Federal Statistical Monitoring for 2022 on the number of diseases, hospitalizations and the number of outpatient visits of patients aged 18 years and older with an established diagnosis of CAD (ICD 10:I25).Results. In the Central, Southern and Northwestern Federal Districts, the hospitalizations and outpatient visits of the adult population with chronic CAD were higher, and in the North Caucasus, Far Eastern and Ural Federal Districts — below the Russian average level. In the Volga Federal District, the outpatient visits with chronic CAD were higher than the Russian average, and the hospitalizations were below the Russian average. In the Siberian Federal District, the outpatient visits were lower, and the hospitalizations were higher than the Russian average level. When analyzing the ratio of hospitalization rate to the number of outpatient visits of the adult population with an established chronic CAD in the primary health care unit, characterizing the availability, quality and efficiency of outpatient care, the highest indicator was recorded in the Siberian Federal District, while its heterogeneity within the federal district was the highest in comparison with other federal districts. Its lowest was recorded in the Southern Federal District, while heterogeneity within the federal district was the lowest in comparison with other federal districts. The values of this parameter varied from 3,67 in the Kurgan Oblast to 38,33 in the Republic of Tuva.Conclusion. Accounting for diseases treating primarily on an outpatient basis can become one of the tools for assessing the quality of adult primary health care. However, before including this indicator in the criteria for assessing the quality of medical services, a deeper understanding of the reasons influencing its change is required.
Hyperuricemia and hypertension in working-age people: results of a population study
Authors: Shalnova S. A. , Imaeva A. E. , Kutsenko V. A. , Balanova Yu. A. , Kapustina A. V. , Shepel R. N. , Drapkina O. M. 
Published: January 2024

Aim. To study the prevalence of hyperuricemia (HU) and gout depending on hypertension (HTN), as well as to evaluate their associations with mortality in the Russian population.Material and methods. The analysis included data obtained in two cross-sectional studies — ESSE-RF and ESSE-RF2. All study participants were surveyed using a modular designed questionnaire. Serum uric acid (UA) was determined using the uricase method. HU corresponded to a UA >420 µmol/l in men and >360 µmol/l in women. HU without gout was considered asymptomatic HU in the present study. Associations with endpoints were assessed using Cox proportional hazards models with associated hazard ratios.Results. The average prevalence of HU was 18,2%. HU, as expected, predominates among the male cohort — 22,6% vs 15,7%, respectively. The prevalence of asymptomatic HU was 4,4% higher among men compared to women. The prevalence of gout increased with age and averaged 2,6% in the entire population. A high content of UA was revealed in men in the absence of hypertension. The prevalence of HU in women with HTN was 3 times higher than in participants without hypertension. In the male cohort, in the group of hypertension without HU, all-cause and cardiovascular mortality significantly increases, and in the group with hypertension and HU, only all-cause mortality increases. In women, the cardiovascular death risk increased in HTN — hazard ratio 3,98 (95% confidence interval 1,86-8,52). At the same time, in women with HTN and HU, all-cause and cardiovascular death risk increased by 66% and 6,7 times, respectively.Conclusion. Every fifth study participant was diagnosed with HU. The prevalence of HU in hypertensive men was approximately 1,5 times higher than without hypertension. In women with HTN, HU was detected three times more often than without HTN, which may indicate a more pronounced relationship between HTN and HU in women. HU can worsen the HTN prognosis. Thus, monitoring and timely correction of UA levels in hypertensive patients become necessary to improve the prognosis.
Delirium pediátrico en pacientes hospitalizados
Authors: Vázquez Manzanares Sofía Berenice 
Published: January 2024

ANTECEDENTES: El delirium es trastorno médico-psiquiátrico, caracterizado por una alteración aguda y fluctuante del estado de consciencia basal, acompañado de otras manifestaciones cognitivas. Pese a su alta frecuencia en pacientes pediátricos hospitalizados, la mayor parte de las investigaciones corresponden a estudios retrospectivos y, hasta la fecha, no se cuenta con reportes prospectivos nacionales.
OBJETIVO: Describir la frecuencia, características clínicas y morbilidad y mortalidad del delirium en pacientes pediátricos hospitalizados.
MATERIALES Y MÉTODOS: Estudio observacional, transversal, prospectivo y analítico, llevado a cabo en pacientes de 6 a 17 años, con diagnóstico de delirium, identificados por personal médico del servicio de Psiquiatría infantil, entre agosto de 2020 a agosto 2021, evaluados mediante las escalas de delirium Cornell y PAED.
RESULTADOS: Se registraron 24 pacientes: 15 varones y 9 mujeres. La media de edad fue 13 años ± 3. La distribución por subtipos fue: 10 (42%) pacientes con delirium hipoactivo; 9 (37%) con delirium mixto y 5 (21%) con delirium hiperactivo. Se encontró elevada frecuencia de factores de riesgo sumatorios. Las concentraciones altas de proteína C reactiva se asociaron con cuadros más graves.
CONCLUSIONES: Se encontró elevada frecuencia de factores de riesgo sumatorios. concentraciones altas de proteína C reactiva se asociaron con cuadros más graves.