bluuebunny/crossref_metadata_2025_split huggingface dataset:
Menstrual irregularities associated with COVID-19 vaccines among women in Saudi Arabia: A survey during 2022
Authors: Mahfouz Mohamed Salih , Abdelmageed Maha Murtada , Alqassim Ahmad Y. , Hakami Taif Khalid Mohammed , Alshekh Maryam Mohammed , Hamithi Dalal Mohsen Ali , Alakhdar Fatma Dia Haidar , Ayyashi Norah Mohammed , Madkhali Ryof Mousa Ahmad 
Published: October 2023

Abstract
Some changes appeared in women’s menstrual cycle after receiving the coronavirus disease 2019 (COVID-19) vaccine, but the information about the pattern and characteristics of these symptoms was unclear. This study was conducted to estimate the prevalence of menstruation change and evaluate the association between COVID-19 vaccination and the occurrence of such disturbance. An online web-based survey was conducted during March–April 2022 that targeted 729 COVID-19 vaccinated women aged between 18 and 45 years in the Jazan region of Kingdom of Saudi Arabia. The tool collected demographic information, psychological data, and COVID-19 post-vaccination side effects. The overall prevalence of menstrual change among the women was 60.9% (95% CI 57.3–64.4). 66.3% and 64.1% of women, respectively, in the age group of 25–34 and 35–45 years were more affected. Most of the detected abnormalities were related to delayed menstruation and changes in pain intensity. Menstrual disturbances that occur after immunization are transient and have no long-term implications. Menstrual disorders are prevalent before vaccination, but there is a considerable increase following vaccination. Because there is no apparent cause for these post-vaccine disturbances, and their effects are difficult to anticipate, it is preferable to warn those concerned and encourage them to learn more about the biological changes causing these problems.
Chordal and Perfect Zero-Divisor Graphs of Posets and Applications to Graphs Associated with Algebraic Structures
Authors: Khandekar Nilesh , Joshi Vinayak 
Published: October 2023

ABSTRACT
In this paper, we characterize the perfect zero-divisor graphs and chordal zero-divisor graphs (its complement) of ordered sets. These results are applied to the zero-divisor graphs of finite reduced rings, the comaximal ideal graphs of rings, the annihilating ideal graphs of rings, the intersection graphs of ideals of rings, and the intersection graphs of subgroups of groups. In fact, it is shown that these graphs associated with a commutative ring R with identity can be effectively studied via the zero-divisor graph of a specially constructed poset from R.
On Numerical Problems in Computing Life Annuities Based on the Makeham–Beard Law
Authors: Castellares Fredy , Lemonte Artur J. 
Published: October 2023

ABSTRACT
Analytic expressions for the single and joint life annuities based on the Makeham–Beard mortality law have been derived recently in the literature, which depend on special mathematical functions such as hypergeometric functions. We verify that the arguments of the hypergeometric functions in the analytic expressions for the single and joint life annuities may assume values very close to unity (boundary of the convergence radius), and so numerical problems may arise when using them in practice. We provide, therefore, alternative analytic expressions for the single and joint life annuities where the arguments of the hypergeometric functions in the new analytic expressions do not assume values close to one.
Crystal structure of (1E,1′E)-4,4′-(9,9-diethyl-9H-fluorene-2,7-diyl)dibenzaldehyde dioxime, C31H28N2O2
Authors: Ma Ying-Hong , Zhao Hong-Yan , Tian Yu , Wu Yi , Wang Lei 
Published: October 2023

Abstract
C31H28N2O2, triclinic,

P

1
‾

$P\overline{1}$

(no. 2), a = 9.0809(9) Å, b = 9.2626(9) Å, c = 14.8540(15) Å, α = 93.574(8)°, β = 98.554(8)°, γ = 99.558(8)°, V = 99.558(8) Å3, Z = 2, R

gt
(F) = 0.0541, wR

ref
(F
2) = 0.1424, T = 293(2) K.
Alkali-activated binder based on red mud with class F fly ash and ground granulated blast-furnace slag under ambient temperature
Authors: Khorshidi Hossein , Zhang Chunwei , Ghasemi Marziyeh 
Published: October 2023

Abstract
This study examined the fresh and hardened characteristics of alkali-activated binders (AABs) based on ternary mixtures of red mud (RM), class F fly ash (FA), and ground granulated blast-furnace slag (GGBFS). The binders were prepared by dry mixing of 50% RM, 25–50% FA, and 0–25% GGBFS. The alkali activators were prepared from sodium hydroxide solution with different concentrations (6–14 mol) and sodium silicate solution. Curing at room temperature was adopted for the preparation of all samples. The flowability, setting time, and compressive and flexural strength tests were used to examine the properties of the resulting binders. To study the microstructural characterization, the scanning electron microscope, X-ray diffraction, and Fourier transformation infrared techniques were used. The results show that the flowability of the AAB decreases with higher GGBFS content, the addition of GGBFS reduces the setting time, and the incorporation of GGBFS increases the flexural and compressive strengths of the AAB. Microstructural and chemical analysis results indicate that in addition to geopolymer gel, calcium silicate hydrate (C–S–H) is formed upon adding GGBFS, producing a denser microstructure.
Unveiling transport properties in rare-earth-substituted nanostructured bismuth telluride for thermoelectric application
Authors: Waqas Muhammad , Shakoor Abdul , Nadeem Muhammad , Nowsherwan Ghazi Aman , Ali Ahmar , Aamir Muhammad Fasih , Bhatti Shahbaz Younas , Bilal Ahmed , Rehman Anis Ur 
Published: October 2023

Abstract
Thermoelectrics is an emerging technology in the field of renewable energy sources, and the exploration of doped materials has opened up new avenues for enhancing their performance. La-doped thermoelectric materials with the composition Bi2−x
La
x
Te3 (x = 0.0, 0.1, 0.2, 0.3, 0.4) were synthesized using the WOWS sol–gel method and sintered at 500 °C for 5 h. X-ray diffraction analysis confirmed a rhombohedral crystal structure with lattice constants of a = b = 4.41(2) Å and c = 29.81(3) Å. Scanning electron microscopy revealed particle-like shapes (0.7–2.5 μm). Fourier transform infrared spectroscopy confirmed the single-phase nature of the samples. DC electrical measurements showed increasing conductivity with temperature. AC electrical analysis demonstrated frequency-dependent behavior with increasing AC conductivity and decreasing loss factor and dielectric constants. Seebeck coefficient measurements exhibited temperature-dependent behavior. Thermal transport properties showed increasing thermal conductivity and volumetric specific heat with temperature, while thermal diffusivity decreased. The composition Bi1.9La0.1Te3 with x = 0.1 doping displayed lower thermal conductivity, higher electrical conductivity, and a higher ZT value, making it more suitable for thermoelectric applications. Furthermore, the sample Bi1.8La0.2Te3 exhibited favorable characteristics for energy storage applications compared to the other samples. These findings provide insights into the potential applications of La-doped bismuth telluride compounds in thermoelectric and energy storage systems.
“Demographic Winter”: Does it Have an Impact on Indonesia? Population Economic Records
Authors: Rosyadi Rosyadi , Wijayanti Tri Cicik , Jiuhardi Jiuhardi 
Published: October 2023

The originality of this paper focuses on existing material. It has implications for uncovering Indonesia's barriers to population growth, which are associated with economic components such as employment, wages, and happiness. On this basis, the orientation of this study is centered on cycles in the "demographic winter" of Indonesia. Short-term data for 2016–2021 is applied. This research is using multiple regression. In its actualization, population composition has a positive effect on the aging population, the aging population has a positive effect on the young workforce, and the young workforce affects wages. Another direct effect found a positive effect between fertility on marriage and birth productivity. From other moments, it is evident that being married positively affects birth productivity, and life expectancy and birth productivity positively affect happiness. In theoretical construction, the findings suggest further identification beyond the existing premise. The research in the next edition is growing by including other non-economic factors such as health, migration, mortality, and education.JEL Classification: C12, C22, J10, J21, I31
Challenges in Embracing Green Supply Chain in Morocco's Auto Industry
Authors: Fatih Fatima Zahra , Zhang Linlin 
Published: October 2023

As global environmental awareness grows, businesses are increasingly pressured to integrate environmentally responsible practices into their supply chains. However, the automotive industry in Morocco needs to be faster to embrace Green Supply Chain Management (GSCM). This research applies the rigorous Analytic Hierarchy Process (AHP) approach and polls industry specialists to evaluate and prioritize the most significant barriers to broad GSCM deployment in the automobile industry. The results show that financial hurdles are the most difficult to overcome, whereas technical and infrastructure hurdles are less than others. This ground-breaking study provides important insights into the barriers to GSCM implementation in Morocco's automotive industry. These results could motivate governments, business leaders, and academics to create concrete plans to address the challenges highlighted here. The primary goal of this study is to promote environmental stewardship and drive corporate growth in Morocco's automotive sector by adopting of green supply chain techniques.JEL Classification: E31, F31, C22
The Role of Export in Boosting Indonesia’s GDP during Crisis: Macroeconomic Conditions
Authors: Goestjahjanti Francisca Sestri , Pasaribu Sahala Benny , Novitasari Dewiana , Azz Istajib Kulla Himmy , Winanti Winanti 
Published: October 2023

Research examining the determinants of export activities affecting economic growth during the pandemic is gaining global interest, particularly in Indonesia, which recently reduced its fuel subsidy as a unique case in this field. Hence, this study examines the role of export and macroeconomic conditions, including fuel price, exchange rate, and interest rate, in boosting Indonesia’s GDP during the crisis. We examine this relationship by conducting a structural equation model and path analysis on secondary data from 1995-2022. The result shows that both partially and simultaneously, fuel prices, exchange rates, and interest rates significantly affect exports. On the other hand, an increase in export activity improves Indonesian GDP. Thus, simultaneous control of fuel prices, exchange rate, interest rate, and export value can improve Indonesian GDP growth even during the crisis. Based on this result, this article proposes suggestions to the government for a stable fuel price, exchange rate, interest rate, and government policy to promote future economic growth.JEL Classification: E31, E43, F31, C32, O47
Non-living naturalia in Clusius's correspondence, Part II. Minerals, strange stones, fossils and earths as objects of exchange in the respublica litteraria around Clusius
Authors: Orbán Áron 
Published: October 2023

AbstractCarolus Clusius (Charles de l’Écluse, 1526–1609), one of the most renowned naturalists of sixteenth-century Europe, was a versatile man of letters. One of his fields of interest neglected in scholarship is his attitude and activities around what was called fossilia at that time, and what can today be called non-living naturalia: metals, gems, various strange “stones”, fossils or medicinal earths. Such naturalia appear several times in his correspondence. This two-part study reviews how Clusius took part in the collecting, exchange and discussions about these inorganic objects in the European respublica litteraria. He could even be involved in geological or palaeontological issues of his age. The investigation not only throws light on the activities of Clusius and some of his correspondents, but also taps into the broader topic of communication and exchange in the Literary Republic of the time, and may even contribute to the history of the natural sciences in the period. Some of the non-living naturalia Clusius was interested in (like “Saint Ladislaus's coin” or the medicinal earth of Tokaj) could be found in Hungary and he looked for them by way of friends in that region (it is known that one of his most important patrons was the Hungarian aristocrat Boldizsár Batthyány). For reasons of space, the present study has been published in two parts: Sections 1–3 appeared in the previous issue, while Sections 4–7 are published in this one. A map to the entire study is included at the end of the present part.
Study on the characterization of fly ash and physicochemical properties of soil, water for the potential sustainable agriculture use – A farmer's perspectives
Authors: Johnson Jeyaraj Nittin , Sankararajan Vanitha 
Published: October 2023

AbstractIn this study, suitable fly ash (FA) was selected for agricultural purposes according to combined characteristic soils and water. The two FAs from the Tuticorin Thermal Power Plant (FA-TTPP) and Sripathy Thermal Power Station (FA-STPS) and physio-chemical analysis of soil and water samples from the five different sites (1–5) in Viruthunagar district, Tamilnadu is made. X-ray diffraction analysis (XRD) of FAs showed that quartz (SiO2), mullite (Al6Si2O), and hematite (Fe2O3) are available that enhance plant growth. The Fourier-transform infrared spectroscopy (FTIR) results confirmed that Si–O–Si, Al–O–Si, HO–OH, and OH bonding present in the FAs support to meet the required plant nutrients in the soil. Scanning electron microscopy analysis (SEM) of FA-TTPP revealed compact microspheres with regular, smooth, and irregular textures while FA-STPS showed glassy, unshaped fragments that may help to improve the texture of field sites. Energy dispersive X-ray spectroscopy (EDX) analysis found that FAs have essential macro- and micronutrients to minimize the soil nutrient and thus help to improve plant productivity. Sites 1 and 2 have acidic soil conditions and are recommended to use both FAs since they are alkaline in nature. FA can improve the water-holding capacity of sandy loam soils of sites 2, 3, and 4 due to the presence of fineness content in FA. Site- 1 has iron deficiency which can be remediated with rich iron FA-STPS. It is recommended to use optimum FA based on soil and water to improve agricultural efficiency.
The Influence of the Guided Inquiry Learning Model on the Critical Thinking Skills of Fifth-Grade Students in Social Studies Subjects
Authors: Haedi Ismayanti , Jamaludin Ujang , Taufik Muhammad 
Published: October 2023

The success of social studies learning is strongly influenced by the ability of teachers to provide critical thinking skill in the learning process activities. This research aimed to (1) determine the influence of the guided inquiry learning model on fifth-grade students' critical thinking skills in social studies subjects and (2) find out whether there are differences in fifth-grade students' critical thinking skills after applying the guided inquiry learning model and the direct instruction model. The research method applied quasi-experimental. The research design was a nonequivalent control group design. Data collection techniques used both test and non-test. The results highlighted the influence of guided inquiry learning models on fifth-grade of the State Elementary School of Taman Baru 2 students' critical thinking skills and differences in students' critical thinking skills before and after applying the guided inquiry learning model. Moreover, the post-test mean was more significant than the pre-test, 83.89 49.47. The paired samples t-test also revealed that the sig. value of pair 1 was 0.000 0.05, and the sig. value of pair 2 was 0.000 0.05. Further, the mean experimental post-test was higher than the control post-test, 83.89 71.89. The independent samples t-test also obtained the sig. value (2-tailed) of 0.002 0.05. Hence, learning was more successful or influential through the guided inquiry learning model on the critical thinking skills of fifth-grade students in social studies subjects.
Pengaruh Komunikasi Interpersonal Kepala Bidang Dikmenti Terhadap Produktivitas Kerja Pegawai Dinas Pendidikan Provinsi Jawa Barat
Authors: Afianti Dini , Permana H. Johar , Nurdin Diding 
Published: October 2023

Research in the wake of the problems how much influence interpersonal communication head Dikmenti field to work productivity of employees at the Education Department of West Java Province. The method used is descriptive method supported by literature study. As well as using the techniques of data collection using the questionnaire enclosed with 4 rating scale (Likert) were distributed to 49 employees especially in the field Dikmenti as samples. The problems of this study (1) how the image of interpersonal communication chief of Dikmenti Education Department of West Java Province, (2) how the employee productivity Education Department of West Java Province, (3) how much influence interpersonal communication head of Dikmenti against employee productivity Education Department of West Java Province. Based on the results of data processing which is calculated by using the technique Weight Means Scores (WMS) shows that the average general tendency for the variable X (Interpersonal Communication) obtained at 3.06 and are in very good category. As for the average general trend in Y (Work Productivity) obtained at 3.45 to be in very good category. The calculation result normality test on the distribution of the data that the variables X and Y have normal distribution. Judging from the calculation of the correlation coefficient (rhitung) using the formula obtained Perason Product Moment correlation coefficient of 0675. Thisshows that there is a strong relationship between the variables X and Y. The test results significantly with t-test obtained t is known ttabel 6.031 and 2.012 compared to 6.03˃ 2012 means that significant relationship between interpersonal communication department heads Dikmenti on productivity employee of West Java Provincial Education Office. To determinethe influence of the variables X and Y is shown from the calculation coefficient of determination (KD) of 43%. This shows that the influence of the head of the field of interpersonal communication Dikmenti against employee productivity Education Department of West Java province by 43% and the remaining 57% is influenced by other factors. Likewise, the results of the regression analysis obtained by the equation Y = 44.949 + 0.525 X means every one-unit change in the variable X will provid a change in the variable Y for 0.525.Berdasarkan the above results it can be concluded that the research hypothesis that there is positive and significant correlation between Interpersonal Communication Division leader Dikmenti the Work Productivity Employee Education Department of West Java Province. The results of this study are expected to provide a benefit both for the institution, employees and for further research that will examine communication problems on the productivity of labor.
Implementasi RKJM: Studi Perencanaan Sekolah
Authors: Juwariah Yanti 
Published: October 2023

Planning is the first step that must be taken to achieve the expected goals. In the world of education, planning or Term Work Plans are prepared as the basis for implementing education programs in schools for the next 4 years which are intended to develop 8 national education standards, namely content standards, graduate competency standards, process standards, teacher and education staff standards. , management standards, facilities and infrastructure standards, assessment standards and financing standards. This research tries to examine the supporting and inhibiting factors for the effectiveness of implementing the strategic plan and the solutions used by schools to overcome these obstacles. This research is expected to be a reference for improving the implementation of a more effective and adequate RKJM. The type of research used is exploratory qualitative research which aims to obtain an overview of the effectiveness of the planning at elemetary school 1 Darangdan, Purwakarta Regency. This type of exploratory research is intended to describe a group of people, an object, a set of conditions, a set of thoughts, or a set of events in the present, which is carried out by analyzing the effectiveness of the planning
Adana Halkevleri Ve Faaliyetleri (1963-1973)
Authors: HANGÜL Nesrin 
Published: October 2023

1932’de açılan Halkevleri, Cumhuriyet Halk Partisi’nin önemli bir eğitim kurumuydu fakat 1951’de kapatıldı. 27 Mayıs 1960 darbesinden sonra eski halkevi yöneticileri bir araya gelerek halkevlerini açmak için birtakım çalışmalara başladı. Bu çalışmaların sonucunda 1960 yılında “Türk Kültür Derneği” adıyla yeniden kuruldu. Dernek 12 Nisan 1961’de Bakanlar Kurulu’nun kararıyla kamuya hizmet eden dernekler arasına alındı. Derneğin 21 Nisan 1963 tarihli olağanüstü kurultayında ismi “Halkevi” olarak değiştirildi. Eski örgütlenme yapısına sahip olan halkevi köycülük, dil, tarih ve edebiyat, müzik, gösteri, folklor, spor, turizm ve gezi, kitaplık ve yayın olmak üzere 9 koldan oluşuyordu. 1963’te derneğin halkevi ismini almasıyla birlikte Adana Halkevi açıldı. İlk toplantısını 26 Ekim 1963’te yaptı. Halkevine ilginin artması sonucu 1965’de Akkapı Halkodası açıldı. Açıldıktan kısa süre içinde üye sayısında büyük bir artış meydana geldi. Bunun üzerine 1966’da halkevine dönüştürülerek hizmet vermeye devam etti.
Adana’da faaliyet yürüten iki halkevinin çalışmaları Yeni Adana ve Ülkü gazeteleri ile Başbakanlık Cumhuriyet Arşivi’nden elde edilen bilgiler incelenerek ortaya çıkarıldı. Ayrıca konuyla ilgili telif eserlerden de faydalanıldı.
Una experiencia didáctica en la formación inicial de docentes e investigadores: estudio de caso en una universidad pública de Honduras
Authors: Brenes Maltez Perla , Iglesias Martinez Marcos Jesús , Lozano Cabezas Inés , Arroyo Salgueira Sandra 
Published: October 2023

El objetivo de este estudio es analizar las percepciones del alumnado y del profesorado sobre las competencias adquiridas durante la implementación del programa “Desarrollo de la competencia investigadora en la formación inicial de docente” que tenía como propósito principal diseñar y desarrollar proyectos de investigación educativa. Desde un enfoque cualitativo, con la aplicación del método de estudio de caso, se trabajó con una muestra de 80 estudiantes y cinco docentes de una universidad pública de Honduras. Los hallazgos permitieron concluir que, los estudiantes adquirieron el dominio teórico-práctico para el diseño y desarrollo de un proyecto de investigación como resultado de su participación activa en una experiencia de aprendizaje basada en la estrategia del taller pedagógico, el acompañamiento docente y el trabajo colaborativo entre pares.
“In Four Eyes”: Supervision of the Governor’s Corps by the III Section and the Ministry of Internal Affairs in 1855—1861
Authors: Mogilevskii Nikolay 
Published: October 2023

In the proposed article, the author raises the question of the nature of the relationship between the III Section of the Imperial Chancellery and the Ministry of the Interior in the framework of control over the provincial administration in Russia in 1855—1861. Analyzing the data from the gendarmerie reports about the governors and comparing them with the information available in the Ministry of Internal Affairs itself about the same governors, the author comes to the conclusion that the idea of the “omnipotence” of the secret police, which, literally as a result of a single denunciation, can decide the fate of the “objectionable” head of the province, at least exaggerated. Documents show that often both departments completely coincided in their assessments of the activities of one or another “master of the province”. In those cases when contradictions were found in their assessments, it was by no means always possible to win an apparatus victory for the III Section.