bluuebunny/crossref_metadata_2025_split huggingface dataset:
A study of the dynamic evolution of spherical gravitating systems
Authors: Kutlimuratov Sardor , Otojanova Nilufar , Tadjibaev Ikram , Tillaboev Komiljon 
Published: August 2024

This article discusses the problems of origin and evolution and issues of numerical modeling of spherical systems, such as clusters of galaxies, globular clusters or E0 galaxies, characterized by massiveness and relatively old age, including up to 1000 bodies. First, observational data on galaxy clusters and their results are analyzed, including using a numerical method. Methods for numerical modeling of the evolution of spherical systems are studied. Two models are analyzed: the first is spherically homogeneous, with an isotropic distribution, and the second is with a particle distribution obeying the Plummer model. Changes in the position of bodies in the system and the distribution of velocities for different moments of time were obtained for each individual model. The calculation results are presented in the form of graphs. In the first model, at an early stage of evolution, the system collapses: a dense core is formed in the center, and a shell is formed around it. It is shown that over time the concentration of the nucleus decreases and it begins to stretch and the size of the system begins to increase. In this case, the distribution of bodies in the system obeys the Gaussian distribution and remains unchanged until the end of evolution. The second model also shows that at an early stage of evolution, the system collapses: then the system contracts and a compacted core forms in the center. The difference between the second model and the first is that a dense halo appears around the nucleus. It is found that sometimes in the early stages of evolution the system is slightly elongated and then tends to a spherical shape. It is also discovered that when solving the modeling of spherical systems, the choice of initial conditions plays an important role
Physical and mechanical properties of adobe bricks reinforced by natural additives, a case study of alfalfa fibers
Authors: Azalam Youness , Alioui Abdelmounaim , Al armouzi Naoual , Benfars Mohammed , Mabrouki Mustapha , Bendada El Maati 
Published: August 2024

The primary objective of this study is to determine the impact of alfalfa fiber on the physicomechanical properties of adobe bricks. The soil and fibers utilized in this research as raw materials were obtained from Ouled Mbarek, a village located in the north-central region of Morocco. Comprehensive tests were conducted on the raw materials for characterization, including mineralogical examination, geotechnical assessment, and microstructural analysis.
The adobe samples underwent thorough examination, with a focus on damage, fracture behavior and fire resistance. The inclusion of alfalfa fiber, containing hydrophilic compounds such as quasi-crystalline cellulose and hemicelluloses, resulted in increased water absorption and significant porosity due to air entrapment during mixing.
Furthermore, the introduction of small amounts of alfalfa fiber led to an enhancement in the mechanical properties of the adobes, showcasing noTable compressive and flexural strength reaching 8.28 MPa and 1.83 MPa, respectively. This improvement was attributed to the strong adhesion between the added fibers and the clay matrix, significantly reducing crack propagation within the composite material. The high tensile strength of alfalfa fibers, stemming from their cellulose content, also played a crucial role in the improved mechanical performance. Consequently, adobes reinforced with such fibers exhibit promising characteristics as cost-effective construction materials in arid and semi-arid regions
The potential of catalyst based on palm leaves in biodiesel production as part of palm oil life cycle assesment
Authors: Manurung Renita , Tambun Rondang , Zuhri Ruri Rizki Syahputri , Harahap Hamidah , Siregar Alwi Gery Agustan 
Published: August 2024

The advantages offered by biomass-based heterogeneous catalysts, such as being easily separated from reaction products, being used many times, having low production costs, and being widely available in nature. One of the heterogeneous catalysts that can be used is a sodium silicate catalyst, especially one obtained by impregnating Na metal on a SiO2 matrix derived from biomass ash. In this study, palm leaves have the potential to be used as raw material for the SiO2 matrix because their utilization has yet to be optimal. This research aims to synthesize, characterize, and apply a sodium silicate catalyst based on palm leaves ash in the production of biodiesel from Refined, Bleached, Deodorized, Palm Oil (RBDPO). SiO2 was obtained by calcining palm leaves at a temperature of 700 °C for 3 hours, followed by washing using 1 N HCl solution. In this research, variations in the mole ratio of NaOH: SiO2 were carried out in the synthesis of sodium silicate, namely 1:1, 1.5:1, 2:1, and 2.5:1. This research also evaluates the reusability of the sodium silicate catalyst and the effect of washing using methanol on the biodiesel yield produced. The best sodium silicate catalyst was obtained at a NaOH: SiO2 molar ratio of 1.5:1, with a biodiesel yield of 74.485 % and an ester content of 97.293 %. SEM analysis shows the presence of a porous structure on the catalyst. The existence of the Si-O-Na group has been confirmed using FTIR. BET-BJH analysis has confirmed the presence of a mesoporous structure in the catalyst, with a surface area of 6.4343 m2/g and a pore size of 5.3127 nm. The resulting sodium silicate catalyst can be used up to three times, with a yield of 62.388 %. Catalyst regeneration using methanol is capable of producing biodiesel with a yield of 45.198 %
Ni–P–PTFE cathode with low surface energy for enhancing electrochemical water softening performance
Authors: Zhao Jingru , Wang Lida , Sun Wen , Yang Zhengqing , Chen Xuesong , Zhang Piji , Chen Xu , Zhao Jin , Liu Jincheng , Liu Guichang 
Published: August 2024

ABSTRACT

Efficient cathode regeneration is a significant challenge in the electrochemical water softening process. This work explores the use of an electroless plating Ni–P–PTFE electrode with low surface energy for this purpose. The Ni–P–PTFE electrode demonstrates improved self-cleaning performance at high current densities. By combining the low surface energy of the electrode with fluid flushing shear force, the precipitation rate on the Ni–P–PTFE electrode remains stable at approximately 18 g/m2·h over extended periods of operation. Additionally, the cleaning efficiency of the Ni–P–PTFE electrode surpasses that of stainless steel by 66.34%. The Ni–P–PTFE electrode can maintain a larger active area and a longer operational lifespan is attributed to its self-cleaning performance derived from low surface energy. Furthermore, the loose scale layers on the electrode surface are easily removed during electrochemical water softening processes, presenting a novel approach to cathode surface design.
Effectiveness and User Experience of a Smoking Cessation Chatbot: Mixed Methods Study Comparing Motivational Interviewing and Confrontational Counseling
Authors: He Linwei , Basar Erkan , Krahmer Emiel , Wiers Reinout , Antheunis Marjolijn 
Published: August 2024

Background
Cigarette smoking poses a major public health risk. Chatbots may serve as an accessible and useful tool to promote cessation due to their high accessibility and potential in facilitating long-term personalized interactions. To increase effectiveness and acceptability, there remains a need to identify and evaluate counseling strategies for these chatbots, an aspect that has not been comprehensively addressed in previous research.

Objective
This study aims to identify effective counseling strategies for such chatbots to support smoking cessation. In addition, we sought to gain insights into smokers’ expectations of and experiences with the chatbot.

Methods
This mixed methods study incorporated a web-based experiment and semistructured interviews. Smokers (N=229) interacted with either a motivational interviewing (MI)–style (n=112, 48.9%) or a confrontational counseling–style (n=117, 51.1%) chatbot. Both cessation-related (ie, intention to quit and self-efficacy) and user experience–related outcomes (ie, engagement, therapeutic alliance, perceived empathy, and interaction satisfaction) were assessed. Semistructured interviews were conducted with 16 participants, 8 (50%) from each condition, and data were analyzed using thematic analysis.

Results
Results from a multivariate ANOVA showed that participants had a significantly higher overall rating for the MI (vs confrontational counseling) chatbot. Follow-up discriminant analysis revealed that the better perception of the MI chatbot was mostly explained by the user experience–related outcomes, with cessation-related outcomes playing a lesser role. Exploratory analyses indicated that smokers in both conditions reported increased intention to quit and self-efficacy after the chatbot interaction. Interview findings illustrated several constructs (eg, affective attitude and engagement) explaining people’s previous expectations and timely and retrospective experience with the chatbot.

Conclusions
The results confirmed that chatbots are a promising tool in motivating smoking cessation and the use of MI can improve user experience. We did not find extra support for MI to motivate cessation and have discussed possible reasons. Smokers expressed both relational and instrumental needs in the quitting process. Implications for future research and practice are discussed.
Gender Differences in Citation Rate
Authors: Soomro Qandeel H. , Li Shuojohn , McCarthy Angela , Varela Dalila , Ways Javaughn , Charytan Amalya M. , Keane Colin , Ramos Giana , Nicholson Joey , Charytan David M. 
Published: August 2024

Key Points

Among the studies included, women were first authors of minority of the publications, and this trend persisted over the 20 years.Crude citation rates were lower in papers with female first authors; the gender of the author was not independently associated with citation metrics.

Background
Historically, women's scientific contributions have been under-recognized. We investigated whether the number of citations, a key metric used for academic promotions and scientific productivity, differs in nephrology high-impact publications on the basis of author's gender.

Methods
We identified randomized clinical trials from 2000 to 2021 in ten high-impact journals. We assessed author gender, citations, h-index, m-index, years of active publishing, education, and grant funding. The main predictor of interest was the gender of the first author. The main outcome was the standardized citation count for analysis of the selected publications. In addition, we evaluated standardized author citation counts using the author, rather than the article.

Results
Among the selected publications, women were first authors of 65 (17.1%) and men of 315 (82.9%) articles. In crude analyses, publications with male first authors had a significantly higher median number of standardized citations (14 versus 10, P = 0.01). Adjusted analyses revealed m-index (β=29.48, P ≤ 0.01) and journal impact factor (β=0.78, P < 0.001) were significantly associated with the standardized citation index. By contrast, neither the gender of the first author (β
male gender=1.42, P = 0.71) nor of the last author (β
male gender=8.89, P = 0.38) were significantly associated with the standardized citations. Similarly, in adjusted analyses on the basis of author profiles, male authorship was not significantly associated with the standardized author citation number (β
male gender=−7.79, P = 0.08).

Conclusions
Our study highlights marked disparities in the overall number of women publishing high-impact nephrology trials and the number of articles with female scientists as first authors of high-impact trials in the nephrology literature. Although crude citation rates were lower in articles with female first authors, the gender of the first author was not independently associated with citation metrics. Addressing gender disparities in academic recognition requires nuanced approaches extending beyond authorship and a broader focus on complex factors that influence academic recognition and scientific contributions.
New data about a Kimmeridgian larger foraminiferal assemblage from a section cropping out NW of Los Reyes Metzontla, Puebla, Mexico
Authors: Omaña Lourdes , Hernández-Láscares Delfino , Buitrón Blanca Estela , Nuñez-Useche Fernando 
Published: August 2024

Northwest of Los Reyes Metzontla, Puebla, a rock succession outcrops that is composed of limestone and sandstone that contain larger foraminifera as well as bivalves such as Trichites sp., corals, and stromatoporid Cladoropsis mirabilis. From the beds with Trichites, we found an assemblage of larger foraminifera that is composed of the species Pseudospirocyclina mauretanica, Choffatella tingitana, Pseudocyclammina lituus, Everticyclammina virguliana, E. praekelleri, Rectocyclammina chouberti, Mesoendothyra croatica, Nautiloculina oolitica, Siphovalvulina variabilis, and Coscinoconus alpina. In the present work, this association was dated as Kimmeridgian age (Late Jurassic) and represents an important record, since rocks of this age have not previously been reported in this area. The larger benthic foraminifera identified in the studied material inhabited the shallow-water environments which were widely distributed around the Tethys during the Late Jurassic.
PENERAPAN LATIHAN AEROBIK SKIPPING TERHADAP PENINGKATAN VO2MAX PADA PEMAIN BOLA VOLI PRIA
Authors: Widiatmika I Made Agus Widiatmika , Permadi Agung Wahyu , Yasa I Made Astika 
Published: August 2024

Olahraga bola voli sangat membutuhkan ketahanan dan intensitas yang tinggi dari sistem energi aerobik. Penyebab terjadinya penurunan VO2Max pada pemain voli pria disebabkan karena gaya hidup pemain voli pria saat ini bisa dikatakan kurang berdampingan dengan aktifitas fisik atau olahraga. Tujuan dari penelitian ini untuk mengetahui pengaruh pemberian Latihan aerobik skipping terhadap peningkatan VO2Max pada pemain voli pria yang diukur menggunakan balke test. Metode yang digunakan adalah metode pre-eksperimental. Hasil analisis data penelitian pada uji normalitas menggunakan Shapiro Wilk Test dan didapatkan hasil pre test 0,00 dan post test didapatkan hasil 0,00 sehingga dapat disimpulkan data tidak berdistribusi normal. Uji hipotesis menggunakan uji Wilcoxon. Terdapat perbedaan nilai VO2Max yang signifikan antara sebelum dan setelah intervensi (p value of 0,000). Hal ini berarti bahwa ada pengaruh latihan aerobik skipping terhadap nilai VO2Max. Hasil peningkatan VO2Max ditunjukkan pada perbedaan nilai rerata antara sebelum dan setelah intervensi dengan persentase sebesar 1,34%. Kesimpulannya, terdapat pengaruh latihan aerobik skipping terhadap peningkatan nilai VO2Max.
KARAKTERISTIK DAN MEKANISME KOPING ORANG TUA ANAK USIA SEKOLAH SELAMA PEMBELAJARAN DARING DI SD 10 KOTA PALU
Authors: Saifah Andi , Palesa Hayati , Sari Elsa Aulia , Lenny Lenny 
Published: August 2024

Pembelajaran daring membuat beberapa orang tua stress dan sulit beradaptasi. Tujuan penelitian untuk mengidentifkasi hubungan karakteristik dan mekanisme koping orang tua anak usia sekolah di SD Negeri 10 Palu. Jenis penelitian yang digunakan adalah deskriptif analitik dengan desain cross sectional. Semua populasi menjadi sampel sebanyak 30 responden. Alat ukur yang digunakan adalah kuesioner google form. Penelitian dilaksanakan bulan Mei 2021 dilakukan secara online. Uji statistik adalah uji Fisher, tingkat kemaknaan 95% (p value < 0,05). Hasil penelitian adalah sebagian besar jenis kelamin perempuan (76,67%), pendidikan SMA (63,33%), golongan umur dewasa akhir (66,67%), koping adaptif (66,67%). Tidak terdapat hubungan bermakna antara karakteristik dan mekanimse koping orangtua anak usia sekolah selama pembelajaran daring (p value > 0,05). Diharapkan orang tua yang masih menggunakan koping maladaptif untuk menerima situasi dan kondisi dengan pikiran yang jernih, sabar, berusaha memahami materi pelajaran anak saat mendampingi anak belajar secara daring/online dan program kesehatan sekolah perlu melakukan pembinaan pada keluarga yang koping tidak efektif
REFEEDING SYNDROME DALAM PENATALAKSANAAN ANAK DENGAN GIZI BURUK: SEBUAH TINJAUAN PUSTAKA
Authors: Felicia Clarissa , Priambodo Winres Sapto 
Published: August 2024

Pendahuluan:
Refeeding syndrome
(RFS) merupakan serangkaian perubahan metabolik dan elektrolit yang terjadi sebagai akibat dari peningkatan pemberian kalori secara agresif setelah periode ketiadaan asupan kalori pada pasien kurang gizi berat. Kondisi ini dapat dijumpai pada berbagai lingkup usia, tidak terkecuali anak-anak. Insidensi RFS mencapai 15% pada balita dengan malnutrisi berat akut. Tujuan: Tinjauan ini bertujuan untuk memberikan referensi terbaru RFS khususnya di bidang pediatri guna memberikan pemahaman yang komprehensif, sehingga kondisi ini diharapkan dapat lebih cepat diprediksi dan dikelola di masa mendatang.
Metode:
Pencarian literatur dilakukan dengan menggunakan database seperti PubMed, Cochrane Library, dan Science Direct dengan kata kunci “sindrom refeeding”, “komplikasi”, “terapi”, “malnutrisi” dan “gizi buruk”. Hasil: Refeeding syndrome merupakan suatu kondisi fatal yang berpotensi mengancam jiwa. Malnutrisi akut dan kronis merupakan faktor risiko yang khas. Namun, RFS dapat dicegah dengan memperkenalkan kembali makanan secara bertahap sesuai dengan fase penyakit, sebagaimana yang tertuang dalam program Sepuluh Langkah Tatalaksana Gizi Buruk. Kesimpulan: Secara keseluruhan, RFS adalah kondisi yang serius tetapi dapat dicegah yang dapat dikelola dengan pemantauan penuh dan perawatan terkontrol. Kesadaran akan kemungkinan RFS dan identifikasi pasien yang berisiko sangat penting, karena komplikasi metabolik dari gangguan ini dapat dihindari dengan penanganan yang tepat.
Emociones presentes en el aula de alumnos de primer semestre que cursan la unidad de aprendizaje de programaciónen UPIBI-IPN
Authors: García Monroy Ana Isabel , Linares González Engelbert Eduardo , Martínez Allende Lucero 
Published: August 2024

En la actualidad, la educación ha evolucionado rápidamente como resultado de diversas causas, como el confinamiento debido al covid-19, los cambios políticos nacionales, entre otros. Esto significa que hay una diversidad de emociones presentes dentro de las aulas, por lo que el objetivo del presente trabajo fue identificarlas y determinar cómo influyen en el proceso de enseñanza y aprendizaje, específicamente en el nivel superior. Para ello, se analizaron seis emociones básicas: ira, tristeza, alegría, miedo, sorpresa y aversión, lo cual se efectuó mediante una medición cuantitativa y continua de variables dependientes a partir de la aplicación de un cuestionario compuesto por 16 ítems a 146 estudiantes de primer semestre de la Unidad Profesional Interdisciplinaria de Biotecnología.Los resultados muestran distintos estados emocionales presentes en los docentes que influyen en el proceso de enseñanza-aprendizaje de los estudiantes, lo cual desencadena una serie de eventos en los alumnos y en el ambiente del aula. Esto se manifiesta en estados de alerta, ansiedad y desorganización, los cuales se reflejan en un bajo rendimiento académico. Estos hallazgos abren líneas de investigación para modificar las condiciones de trabajo de los alumnos y sugieren la implementación de cursos de manejo emocional para los docentes con el fin de promover ambientes de aprendizaje más armónicos.
GAMBARAN DARAH (SEL DARAH MERAH, HEMOGLOBIN, DAN PCV) PADA AYAM KAMPUNG ULU JANTAN DENGAN PEMBERIAN JINTAN HITAM (Nigella sativa) MELALUI PAKAN
Authors: Irma Ade , Santosa Purnama Edy , Suharyati Sri , Siswanto Siswanto 
Published: August 2024

Penelitian ini bertujuan untuk mengetahui gambaran darah (sel darah merah, hemoglobin, dan packed cell volume (PCV)) pada ayam kampung ULU jantan dengan pemberian ekstrak jintan hitam (Nigella sativa). Penelitian ini dilaksanakan pada Desember 2022-Februari 2023 di Unit Kandang Laboratorium Lapang Terpadu yang berada di Fakultas Pertanian, Universitas Lampung. Pemeriksaan sampel darah di lakukan di Laboratorium Klinik Kinkou, Lampung. Penelitian eksperimental menggunakan 4 perlakuan dan 3 ulangan. Perlakuan yang diberikan melalui pakan dengan P0; (kontrol), P1; 36 mg/kg BB/hari (Nigella sativa), P2; 72 mg/kg BB/hari (Nigella sativa), P3; 144 mg/kg BB/hari (Nigella sativa). Data yang diperoleh dianalisis secara deskriptif. Hasil penelitian menunjukan bahwa pemberian ekstrak jitan hitam (Nigella sativa) pada ayam kampung ULU Jantan melalui pakan sampai dengan dosis tertinggi 144 mg/kg BB/hari Nigella sativa menunjukan bahwa rata-rata sel darah merah (2,40--2,55 106/ µL), kadar hemoglobin (12,9--13,9 g/dL) dan nilai PCV (28,4--30,7%) masih berada pada kisaran normal.
Strategy to Develop Okra (Abelmoschus esculentus L.) Plantation Based on Land Suitability Class and SWOT analysis
Authors: Andriyani Idah , Wahyuningsih Sri , Harsono Soni Sisbudi , Agustina Dwi 
Published: August 2024

Okra is famous as super food sources that prevent diabetes and reduce cholesterol. To meet the increasing demand for okra, it is necessary to develop plantation for okra cultivation. In this sense, land suitability analysis for okra plantation is needed as base information to develop the plantation development strategies. This study aimed to identify the okra plantation development strategies in Jember Regency. The strategies involved the technology recommendations needed to improve land conditions. Land suitability evaluation parameters were analyzed using ArcGIS software. The results of the analysis were used to determine internal and external factors in the SWOT (strengths, weaknesses, opportunities, and threats) analysis to determine the technology needed. Results showed that suitable area for okra plantation was divided into class S1 (highly suitable) of 56.85%, and class S2 (moderately suitable) 43.15% of the area. Moreover, based on SWOT analysis the proposed technology strategies for 7 sub districts were in the quadrant II, meaning had weaknesses. Increasing compost as fertilizer was recommended to increase N, K, and P in the soil as well as to increase soil solum. In addition, irrigation and drainage system was proposed to solve problems regarding rainfall. Recommendation to reduce sloping area included terracing development. Keywords: GIS, Land suitability analysis, Okra (Abelmoschus esculentus L.), Plantations development strategies, SWOT.
Struktur Bangunan pada Rumah Penerima Bantuan Stimulan Perumahan Swadaya (BSPS) di Nagari Kambang Timur Kecamatan Lengayang Kabupaten Pesisir Selatan
Authors: Herol Herol , Putri Isria Miharti Maherni , Astuti Retno Fitri 
Published: August 2024

Rumah adalah kebutuhan primer untuk manusia. Dalam Undang-undang nomor 1 tahun 2011 menyatakan negara bertanggung jawab melindungi segenap Indonesia dengan penyelenggaraan perumahan dan kawasan pemungkiman supaya masyarakat mampu bertempat tinggal yang layak dan terjangkau dalam lingkungan yang aman, sehat, dan berkelanjutan di seluruh wilayah Indonesia. Bantuan Stimulan Perumahan Swadaya (BSPS) yang dikenal dengan program bedah rumah dari pemerintah dengan target mengurangi rumah yang tidak layak huni. Rumah tinggal dikatakan layak yang paling utama adalah kekuatan bangunan. Penelitian dilakukan Nagari Kambang Timur Kecamatan Lengayang Kabupaten Pesisir Selatan penerima bantuan tahun 2022. Metode Penelitian yang digunakan bersifat deskriptif. Penerapan struktur pada rumah penerima bantuan program BSPS di Nagari Kambang Timur Kecamatan Lengayang Kabupaten Pesisir Selatan telah memenuhi sesuai petunjuk berdasarkan buku Teddy Boen 2010. Dimensi tulangan utama berdiameter 10 mm, sengkang berdiameter 8 mm dengan jarak maksimum 150 mm. sambungan tulangan kolom-balok dan kolom sloof dilebihkan 40D dan bengkokan 90 derajat dan untuk perkuatan dinding pasang jangkar sepanjang 40D dengan diameter tulangan 10 mm dan perbandingan campuran beton yang digunakan adalah 1 semen : 2 pasir : 3 kerikil.