bluuebunny/crossref_metadata_2025_split huggingface dataset:
Relationship between menstruation period, nutrients intake and appetite with premenstrual syndrome
Authors: Çengel Nur , Arslan Müge 
Published: April 2024

Aim: This study was undertaken to evaluate the macronutrient intake and appetite status of women aged 18-40 before, during, and after menstruation and to examine the relationships of those variables with premenstrual syndrome.
Method: In this observational study, three days nutritional intake record, ‘‘Simplified Nutritional Appetite Questionnaire (SNAQ)’’, and ‘‘Premenstrual Syndrome Scale (PMS)’’ were administered to 410 women who applied to the nutrition and diet polyclinic of Kocaeli Derince Training and Research Hospital. All data were analyzed using IBM SPSS Statistics 26.
Results: As the women’s intake of macronutrients such as carbohydrates (g), protein (g), and fat (g), saturated fat (g) increased, scores for the PMS factors of Anxiety, Irritability, Depressive Affect and Thoughts, Pain, Fatigue, Changes in Appetite and Sleep increased as well, as did total scores (p<0.01 for all). As participants’ scores for the SNAQ increased, the Depressive Affect, Fatigue, Changes in Sleep, Bloating, and Changes in Appetite factor scores and the total scores of the PMS Scale increased (p<0.05).
Conclusion: Women’s macronutrient intake varies before, during, and after menstruation and PMS affects macronutrient intake and appetite.
Pembuatan Prototype CNC Machine Pengambaran Pola Jalur PCB Berbasis Mikrokontroler untuk Efektifitas Pratikum Perancangan dan Pabrikasi Elektronika
Authors: Efrizon Efrizon , Yultrisna Yultrisna , Fajri Muhammad , Madona Era , Wardhani Aditya 
Published: April 2024

Telah dilakukan pembuatan prototype CNC machine pengambaran pola jalur PCB terkendali mikrokontroler yang didasarkan untuk meningkatkan kemampuan mahasiswa dalam mendesain rangkaian elektronika. Sasaran penelitian ini, yaitu (a) membuat sebuah prototpe sistem, (b) memrograman sistem berbantuan Arduino IDE, GRBL, dan (c) mengukur kinerja sistem. Metode penelitian dimulai dari pembuatan prototipe, dan pengukuran kinerja sistem. Hasil pengukuran kinerja sistem ditunjukkan tegangan pada motor stepper ketika bergerak menghasilkan 4,94 Vdc untuk sudut X, sedangkan 4,95 untuk sudut Y dan Z. Waktu pencetakan hasil gambar mengikuti masukan gambar dan ukuran gambar yang sudah di setting. Secara keseluruhan alat dapat berfungsi dengan baik. Saran untuk penelitian lanjutan, dapat ditambahkan pengeboran pada jalur PCB.
Existence of ground states to quasi-linear Schrödinger equations with critical exponential growth involving different potentials
Authors: Zhang Caifeng , Zhu Maochun 
Published: April 2024

Abstract
The purpose of this paper is three-fold. First, we establish singular Trudinger–Moser inequalities with less restrictive constraint:
(0.1)

sup

u
∈

H

1

(

R

2

)

,

∫

R

2

(

|
∇
u

|

2

+
V

(

x

)

u

2

)

d
x
≤
1

∫

R

2

e

4
π

1
−

β

2

u

2

−
1

|
x

|

β

d
x
<
+
∞
,

$$\underset{u\in {H}^{1}\left({\mathbb{R}}^{2}\right),\underset{{\mathbb{R}}^{2}}{\int }\left(\vert \nabla u{\vert }^{2}+V\left(x\right){u}^{2}\right)\mathrm{d}x\le 1}{\mathrm{sup}}\underset{{\mathbb{R}}^{2}}{\int }\frac{{e}^{4\pi \left(1-\frac{\beta }{2}\right){u}^{2}}-1}{\vert x{\vert }^{\beta }}\mathrm{d}x{< }+\infty ,$$

where

0
<
β
<
2

$0{< }\beta {< }2$

,

V

(

x

)

≥
0

$V\left(x\right)\ge 0$

and may vanish on an open set in

R

2

${\mathbb{R}}^{2}$

. Second, we consider the existence of ground states to the following Schrödinger equations with critical exponential growth in

R

2

${\mathbb{R}}^{2}$

:
(0.2)

−
Δ
u
+
γ
u
=

f

(

u

)

|
x

|

β

,

$$-{\Delta}u+\gamma u=\frac{f\left(u\right)}{\vert x{\vert }^{\beta }},$$

where the nonlinearity

f

$f$

has the critical exponential growth. In order to overcome the lack of compactness, we develop a method which is based on the threshold of the least energy, an embedding theorem introduced in (C. Zhang and L. Chen, “Concentration-compactness principle of singular Trudinger-Moser inequalities in

R

n

${\mathbb{R}}^{n}$

and

n

$n$

-Laplace equations,” Adv. Nonlinear Stud., vol. 18, no. 3, pp. 567–585, 2018) and the Nehari manifold to get the existence of ground states. Furthermore, as an application of inequality (0.1), we also prove the existence of ground states to the following equations involving degenerate potentials in

R

2

${\mathbb{R}}^{2}$

:
(0.3)

−
Δ
u
+
V

(

x

)

u
=

f

(

u

)

|
x

|

β

.

$$-{\Delta}u+V\left(x\right)u=\frac{f\left(u\right)}{\vert x{\vert }^{\beta }}.$$
Enhanced corrosion protection of rebars in alkaline solutions by ferroporphyrin and the mechanisms of electron consumption and lattice reconstruction
Authors: Ding Rui , Zhang Xue-Qi , Yue Qing-Xian , Lv Jing , Liu Jie 
Published: April 2024

Abstract
Reinforced concretes are the primary materials in coastal and offshore engineering. In alkaline environment of concrete, the anodic process is passivation of rebars and the conjugated cathodic process is oxygen reduction reaction (ORR). It is proposed that a novel approach to enhance the passivation films through catalyzed ORR by iron meso-tetra(4-carboxyphenyl)porphine (FeTCPP). The ORR catalyst FeTCPP promotes the formation of passivation film, as it accelerates the consumption of abundant electrons generated and accumulated by the anodic formation of passivation films. The passivation films of rebars are highly defective Fe3O4 semiconductor. The dissolution of interstitial ferrous ions and lattice iron ions produces defects of O ion vacancies, Fe ion vacancies and interstitial Fe ions, and they further cause the formation and accumulation of Fe atom vacancies on the metal surface, leading to the collapse of the passivation films. The FeTCPP adsorbs on the surface of passivation films, hindering the dissolution of lattice iron ions and interstitial ferrous ions, thereby inhibiting the generation and accumulation of Fe atom vacancies and improving the integrity and protective ability of the passivation films.
Association between maternal and cord blood thyroid hormones, and urine iodine concentration with fetal growth
Authors: Alimardani Bita , Hashemipour Mahin , Hovsepian Silva , Mozafarian Nafiseh , Khoshhali Mehri , Kelishadi Roya 
Published: April 2024

Abstract

Objectives
We planned to evaluate the association of fetal and maternal thyroid hormones and maternal iodine status with neonates’ anthropometric parameters.

Methods
In this cross-sectional study, levels of thyrotropin were measured in maternal serum in the first trimester of pregnancy, and thyrotropin (TSH) and free thyroxin (fT4) were measured in cord blood serum samples at birth. Urinary iodine concentration (UIC) levels in random urine samples of mothers were measured in the third trimester of pregnancy. The relationship between UIC and thyroid hormone levels of mothers with neonates’ anthropometric birth parameters of neonates was evaluated.

Results
One hundred eighty-eight mother–newborn pairs completed the study. Mean (SD) of cord blood TSH (CB-TSH), cord blood-free thyroxin (CB-FT4) values, and maternal TSH (M-TSH) levels were 8.8 (7.3) mIU/L, 1.01 (0.2) ng/dL, and 2.2 (0.9) mIU/L, respectively. After adjusting for confounders, there was a positive significant association between female neonate length and maternal TSH and log log-transformed CB TSH (LN_CB-TSH) (p<0.05). Median UIC (Q1–Q3) was 157 (53–241) μg/L, and there was no association between birth weight, birth length, and head circumferences of neonates and mothers’ UIC (p>0.05).

Conclusions
We found a positive correlation between maternal TSH in the first trimester of pregnancy and the birth length of newborns, and a negative correlation was observed between CB-TSH and birth length in girls, but it did not provide conclusive evidence for the relationship between maternal and neonatal thyroid hormone levels and birth weight. There was no association between maternal UIC levels in the third trimester and birth anthropometric parameters.
Influence of the twisting and nano fluids on performance of a triangular double tube heat exchanger
Authors: Abdul Razzaq Ali K. , Mushatet Khudheyer S. 
Published: April 2024

Abstract
The hydraulic and thermals performance of flow in a double-tube heat exchanger with an inner twisted triangle tube of length L = 1 m has been studied numerically. Equations for energy, turbulence, and Navier–Stokes were used to model the fluid flow and heat transfer in a double-tube heat exchanger with an inner twisted triangle tube. The Reynolds number range was 5000–30,000 for nanofluid (water-Al2O3) as a working fluid under a turbulent flow regime. The considered configuration was examined by varying the volume concentration of nanofluid while keeping the twist ratio constant (Tr = 5). Different cases of volume concentration of nanofluid are triggered (0.05 %, 1 %, 2.5 %, and 4 %, respectively). The numerical outcomes of a double-twisted tube heat exchanger with an inner triangle-twisted tube are validated with the obtainable numerical data. The governing equations were solved with ANSYS Fluent 18.2. The findings reveal that the larger volume concentration of nanofluid (4 %) gives a greater Nusselt number and vice versa due to the increased thermal conductivity of the nanofluid in the double twist tube heat exchanger compared with a plain tube. However, the nanofluid Nusselt number grows with the rise of both the Reynolds number and volume concentration (Ø), and the best value of the Nusselt number is 210 when Reynolds number = 30,000 and Ø = 4 %. The effectiveness of the heat exchanger grows with an increase in the concentration of the nanofluid and a reduction in the torsion ratio compared to the normal tube. The effectiveness of the double-tube heat exchanger with an inner twist triangle tube increases to the highest value of 0.38 at Reynolds 30,000 and Ø = 4 %.
Facile synthesis and electrochemical investigation of graphitic carbon nitride/manganese dioxide incorporated polypyrrole nanocomposite for high-performance energy storage applications
Authors: Xavier Joseph Raj 
Published: April 2024

Abstract
Manganese dioxide (MnO2) nanoparticles were modified by graphitic carbon nitride (GCN) and polylpyrrole (Ppy) to enhance their electrochemical performance. The surface influence, crystalline structure, and electrochemical performance of the Ppy/GCN/MnO2 material were characterized and compared with those of pristine MnO2. It is found that surface modification can improve the structural stability of MnO2 without decreasing its available specific capacitance. The electrochemical properties of synthesized Ppy/GCN/MnO2 electrode were evaluated using cyclic voltammetry (CV) and AC impedance techniques in 5 M KOH electrolyte. Specific capacitances of 486, 815, 921, and 1377 F/g were obtained for MnO2, Ppy/MnO2, GCN/MnO2, and Ppy/GCN/MnO2, respectively, at 5 A/g. This improvement is attributed to the synergistic effect of GCN and Ppy in the Ppy/GCN/MnO2 electrode material. The Ppy/GCN/MnO2 electrode in KOH has average specific energy and specific power densities of 172 Wh kg−1 and 2065 W kg−1, respectively. Only 2 % of the capacitance’s initial value is lost after 10,000 cycles. The resulting Ppy/GCN/MnO2 nanocomposite had very stable and porous layered structures. This work demonstrates that Ppy/GCN/MnO2 nanomaterials exhibit good structural stability and electrochemical performance and are good materials for supercapacitor applications.
Reduction mechanism and energy transfer between Eu3+ and Eu2+ in Eu-doped materials synthesized in air atmosphere
Authors: Khan Shahab , Zheng Hong-Wei , Jiao Huan , Saleem Shahroz , Gul Zarif , Al-Humaidi Jehan Y. , Al Bahir Areej , Althomali Raed H. , Ali Arshad , Rahman Mohammed M. 
Published: April 2024

Abstract
This article critically examines the reduction mechanisms and energy transfer processes between trivalent europium ions (Eu3+) and divalent europium ions (Eu2+) in materials synthesized in an air atmosphere. It also encompasses various materials and conditions, including a critical analysis of the reduction mechanism and energy transfer between Eu3+ and Eu2+ in Eu-doped materials. Specific investigations include exploring the reduction process in BaMgSiO4:Eu, focusing on factors influencing the reaction. The article also covers low-temperature self-reduction, addressing conditions and mechanisms such as the charge compensation model and laser-induced reduction. Additionally, it explores the influence of charge compensation on luminescent properties, emphasizing enhancements in red emission. Investigations into the role of oxygen vacancies in the reduction of Eu3+ and their implications on material properties are presented. This article further digs into abnormal reduction processes and the formation of defect centers in Eu3+-doped pollucite, proposing a substitution defect model for the self-reduction of europium ions in silicate Ba(Eu)MgSiO4 phosphors. Unusual reduction phenomena, such as reduction via boiling water in Yb2Si2O7:Eu3+ phosphors, and reductions in various glass systems, including porous glass, ZnO–B2O3–P2O5 glasses, aluminoborosilicate glasses, europium-doped Li2B4O7 glass, and aluminosilicate oxyfluoride glass (AOG), are also thoroughly examined.
The environmental impact of using gold nanoparticles and 3HFWC in cosmetics, as determined with LCA methodology
Authors: Rudolf Rebeka , Majerič Peter , Jelen Žiga , Horvat Andrej , Krajnc Damjan 
Published: April 2024

Abstract
This review provides a detailed inventory analysis of the manufacturing process of a cosmetic cream using gold nanoparticles (AuNPs) and hydroxylated fullerene water complex (3HFWC) as novel nanocomponents for cream. The inventory analysis was focused on the evaluation of the two raw materials of the nanocomponents, the consumption of electricity and water, which enabled an insight into the process flows within the production process. The data obtained from this analysis of the inventory of nanocomponents provide an insight into the potential improvements that can be made in the manufacturing process of nanocomponents, in order to reduce the environmental impact of the production of new cosmetic creams. These results will serve as the basis for the second part of the analysis, where a life cycle analysis will be carried out to assess the environmental impacts of cream production from the acquisition of raw materials to the disposal of the final product.
An Advanced Empirical NRCS-CN Model Estimation for Ungauged Catchment Insufficient Data
Authors: Kencanawati Martheana , Iranata Data , Maulana Mahendra Andiek 
Published: April 2024

The calculation of runoff is continuously considered a difficult analysis to define specific prediction methods in ungauged catchments. This leads to the implementation of an observed model to determine curve number (CN) and estimate peak discharge from ungauged basins. Therefore, this study aimed to modify an experimental NRCS model through fieldwork and conduct sensitivity analysis for relevant modeling procedures. In the analysis, the assessment of CN required land use, soil, infiltration in situ measurement, and Hydrological Soil Group (HSG) parameters for the catchment area. The determination of infiltration rate was also initially carried out using the Horton method (double-ring infiltrometer), accompanied by the evaluation of CN through soil classes and land use parameters. Based on infiltration rate and soil classification, HSG was significantly defined for the catchment area. The results showed that the analytical parameters in rainfall-runoff modeling included the Composite Curve Number (SCS-CN ( ⁄S) with a ratio value of 0.2. This was accompanied by the potential retention maximum (S) of 264.37 mm, with the initial proportional abstraction ( ) being 52.87 at an assumed preliminary coefficient of 0.2. Therefore, the CN composite estimation was 65.5, and the correlation between P and Q was evaluated using graph analysis. The trial CN ranging from 39-74 were also significantly considered to optimize the development models of HEC HMS for the best performance, proving that the improvement of CN was interrelated with discharge.
Estudantes com transtorno do espectro autista
Authors: Schmidt Julia Eduarda , Pertile Eliane Brunetto 
Published: April 2024

O presente trabalho aborda o Transtorno do Espectro Autista (TEA), haja vista os desafios enfrentados na atividade docente para atender estudantes com essa especificidade. Para tanto, buscou-se na Teoria Histórico-Cultural (THC) fundamentação para aprofundar a temática, tendo o objetivo de compreender as contribuições desse referencial teórico para o trabalho pedagógico. Considerando a perspectiva histórica da THC, foi desenvolvida uma revisão integrativa de literatura por meio de busca bibliográfica. A análise da produção científica sobre a temática contemplou produções publicadas nos últimos cinco anos como forma de acessar conhecimentos atualizados e produzidos no contexto da crescente preocupação com estudantes com TEA. Os bancos de dados foram a Biblioteca Digital Brasileira de Teses e Dissertações (BDTD), o Portal de Periódicos e o Banco de Teses e Dissertações da Capes. A análise estabelecida foi de ordem qualitativa e abordou as características das mediações para esses alunos com base na THC. Por meio dessas buscas foi possível analisar 22 trabalhos e evidenciar que estas pesquisas abordam o TEA para além do diagnóstico, enfatizando as mediações, como forma de aperfeiçoar os aspectos pedagógicos. Foi possível compreender que, apesar de existirem características gerais do espectro, cada sujeito possui suas particularidades, o que exige conhecer o estudante com base em suas determinações sócio-históricas. Considerando a relevância das mediações e a especificidade do TEA, compreende-se que cabe ao docente considerar as necessidades dos seus alunos (sujeito), qualificando o trabalho pedagógico (em sua forma) com propósito de assegurar a apropriação dos conhecimentos científicos (conteúdo).
Southwark: gentrificación en la periferia de la ciudad neoliberal = Southwark: Gentrification process in the periphery of the neoliberal city
Authors: Ardura Urquiaga Álvaro 
Published: April 2024

ResumenLondres es sin duda un caso paradigmático de una ciudad global neoliberal y tambien de los procesos que se dan en ella como la gentrificación. El caso de Southwark, un distrito al sur del Támesis, es asi mismo relevante por ilustrar una nueva generación de procesos de gentrificación que afectan a la primera periferia. El articulo explora, mediante un método comparativo, que nos sirva a pensar las ciudades a través de otros lugares, cuáles han sido los principales factores, estructurales y culturales, que han desatado el proceso, y hasta que punto son trasladables, dentro de dinámicas que afectan a un mundo globalizado, a otros contextos como el español. AbstractLondon is undoubtedly a paradigmatic case of a neoliberal global city and also of the processes that occur in it such as gentrification. The case of Southwark, a district south of the Thames, is also relevant for illustrating a new generation of gentrification processes that affect the first periphery. The article explores, through a comparative method, that helps us think about cities through other places, what have been the main structural and cultural factors that have unleashed the process, and to what extent are they transferable, within dynamics that They affect a globalized world, other contexts such as Spain.
Contemporary Aseptic Revision Total Hip Arthroplasty in Patients ≤50 Years of Age
Authors: Carender Christopher N. , Bothun Cole E. , Sierra Rafael J. , Trousdale Robert T. , Abdel Matthew P. , Bedard Nicholas A. 
Published: April 2024

Background:
There has been a paucity of long-term outcomes data on aseptic revision total hip arthroplasties (THAs) in the young adult population. The purpose of this study was to evaluate implant survivorship, complications, and clinical outcomes in a large cohort of contemporary aseptic revision THAs in patients ≤50 years of age at the time of the surgical procedure.

Methods:
We identified 545 aseptic revision THAs performed at a single academic institution from 2000 to 2020 in patients who were 18 to 50 years of age. Patients who underwent conversion THAs and patients with a history of any ipsilateral hip infection were excluded. The mean age was 43 years, the mean body mass index (BMI) was 29 kg/m2, and 63% were female. The index indication for revision THA was aseptic loosening in 46% of cases, polyethylene wear or osteolysis in 28% of cases (all revisions of conventional polyethylene), and dislocation in 11% of cases. There were 126 hips (23%) that had undergone at least 1 previous revision (median, 1 revision [range, 1 to 5 revisions]). The mean follow-up was 10 years.

Results:
In the entire cohort, the 20-year survivorship free of any re-revision was 76% (95% confidence interval [95% CI], 69% to 82%). There were 87 re-revisions, with 31 dislocations, 18 cases of aseptic loosening of the femoral component, and 16 periprosthetic joint infections (PJIs) being the most common reasons for re-revision. Dislocation as the indication for the index revision was associated with an increased risk of re-revision (hazard ratio, 2.9; p < 0.001). The 20-year survivorship free of any reoperation was 73% (95% CI, 66% to 78%). There were 75 nonoperative complications (14%), including 32 dislocations. The mean Harris hip score significantly improved (p < 0.001) from 65 preoperatively to 81 at 10 years postoperatively.

Conclusions:
Contemporary aseptic revision THAs in patients ≤50 years of age demonstrated a re-revision risk of approximately 1 in 4 at 20 years. Dislocation, aseptic loosening of the femoral component, and PJI were the most common reasons for re-revision. Index revision THAs for dislocation had a 3 times higher risk of re-revision.

Level of Evidence:
Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.
Mixed Methods Approach in Researching EFL Learners’ Motivation
Authors: Adara Reza Anggriyashati , Ahmad Ismail Sheikh , Victorynie Irnie 
Published: April 2024

As mixed-method approach has gained renewed interests of researchers, a review toward the use of mixed-method to investigate EFL learners’ motivation will contribute as a help for future researchers. The present paper attempts to provide a systematic review by synthesizing research articles related to EFL learners’ motivation which used mixed-methods as their research approach. After screening 3,092 research articles on the aforementioned topic, 16 research articles were included into a final systematic map for analysis. An in-depth review shows that questionnaires and sequential explanatory approach are mostly used by the researchers to investigate EFL learners’ motivation. Although selected studies were performed in different countries with diverse theoretical backgrounds, the majority of studies were directed toward university students, resulting in lack of studies on younger EFL learners. The implications for future studies are also discussed for the consideration of researchers in the near future.