bluuebunny/crossref_metadata_2025_split huggingface dataset:
ANALISIS PENGARUH VARIASI PENGGUNAAN ABU AMPAS TEBU DAN LATEX SEBAGAI BAHAN PEMBUATAN MORTAR POLIMER
Authors: Mulyadi Asri , Asrullah Asrullah , Darma Surya , Hidayat Wahyu Handoyono , Hertanto Rusdian 
Published: April 2024

Mortar Polimer adalah material bangunan yang dibentuk melalui proses rekayasa komposit beton klasik dan polimer. Usaha pengembangan mortra polimer telah dilakukan di negara maju. Sampai sekarang pengembangan mortar polimer masih berlangsung untuk mengurangi penggunaan semen, dalam rangka mengantisipasi pemanasan global. Dalam penelitian ini saya akan memanfaatkan abu ampas tebu dan latex sebagai bahan perekat pengganti semen sehingga dihasilkan mortal yang kuat dalam waktu yang lebih singkat. Permasalahan yang akan di bahas dalam penelitian ini adalah diharapkan dengan abu ampas tebu sebagai pengganti semen dan latex sebagai perekat pada campuran mortar dapat memperbaiki kualitas dari mortar itu sendiri. Penelitian ini dilaksanakan dalam skala laboratorium dengan tahapan-tahapan disesuaikan dengan literatur sehingga di dapat hasil yang dapat memperbaiki kualitas dari mortar itu sendiri. Batasan masalah dalam penelitian ini adalah pemanfaatan limbah abu ampas tebu sebagai pengganti semen untuk campuran mortar dengan variasi campuran 0%, 6%, 9% dan 12% dari berat semen, penambahan latex sebagai perekat untuk campuran mortar dengan variasi campuran 0%, 6%, 9% dan 12% dari komposisi air, karakterisasi pengujian pada campuran mortar tersebut yang meliputi pengujian kuat tekan mortar. Dari hasil penelitian yang dilakukan penulis tentang pengujian mortar dengan variasi campuran abu ampas tebu dan latex, maka dapat di tarik kesimpulan bahwa nilai kuat tekan mortar normal (MN) pada umur 28 hari yaitu 1,28 kg/cm2, nilai kuat tekan mortar yang di campur dengan limbah abu ampas tebu dan latex (MAL6%) pada umur 28 hari yaitu 0,72 kg/cm2, nilai kuat tekan mortar yang di campur dengan limbah abu ampas tebu dan latex (MAL9%) pada umur 28 hari yaitu 0,68 kg/cm2, nilai kuat tekan mortar yang di campur dengan limbah abu ampas tebu dan latex (MAL12%) pada umur 28 hari yaitu 0,49 kg/cm2. Dalam studi ini, limbah abu ampas tebu sebagai pengganti semen dan latex sebagai perekat kurang baik digunakan sebagai material bahan pengganti pada campuran mortar.
BIOPSIA LÍQUIDA: AVANCES EN EL DIAGNÓSTICO DEL CÁNCER DE MAMA
Authors: Montoya Mariam Maholy Macias , León Andreina Victoria Monserrate , Zamora Lesther Geovanny Alvarez , Onofre Genesis Lily Cepeda , Intriago Israel Andres Bermudez , Díaz Laura Montesdeoca , Piña Kelly Patricia Naranjo , Burgos Darling Lizbeth Dávila , Burgos Kevin Vicente Dávila , Uzho José Adolfo González , Merchan Daniel Alfonso Pesantes , Tigre Bryan Josue  Rivera 
Published: April 2024

La detección temprana y precisa del cáncer de mama (CM) es crucial para mejorar el pronóstico y la supervivencia de las pacientes afectadas. En este contexto, la biopsia líquida (BL) ha surgido como una herramienta revolucionaria en el diagnóstico y seguimiento del CM. Objetivo: El objetivo de esta revisión bibliográfica es analizar la importancia de la Biopsia Líquida en el diagnóstico del cáncer de mama. Metodología: Para llevar a cabo esta revisión, se realizaron búsquedas en bases de datos como PubMed, Scopus y Web of Science utilizando palabras clave específicas. Se incluyeron estudios publicados desde el 2018 hasta el 2024, priorizando trabajos en inglés y español. Los criterios de inclusión se centraron en investigaciones originales, revisiones sistemáticas y metaanálisis relacionados con la importancia de la BL en el diagnóstico del CM. Resultados: Los resultados muestran que la BL es altamente sensible y específica en el diagnóstico del CM. Ha permitido la identificación de biomarcadores como el ADN tumoral circulante (ctDNA) y el ARN mensajero circulante (ctRNA), que son útiles para la detección temprana, monitorización de la progresión tumoral y evaluación de la respuesta al tratamiento. Además, la BL ha demostrado ser una técnica más dinámica y menos invasiva en comparación con las biopsias tradicionales. Conclusiones: En conclusión, la BL representa un avance significativo en el diagnóstico del CM, con el potencial de mejorar la detección temprana y la personalización del tratamiento. Sin embargo, se requiere más investigación para abordar los desafíos asociados con esta tecnología y garantizar su accesibilidad en todo el mundo.
Pengaruh Model Pembelajaran Active Team Quiz Terhadap Hasil Belajar Siswa Mata Pelajaran Pendidikan Agama Islam Kelas Xi Sma Muhammadiyah 9 Sedayulawas Brondong
Authors: Maftuhah Maftuhah 
Published: April 2024

This study discusses the Effect of the Active Team Quiz Learning Model on Student Learning Outcomes of Class XI Islamic Religious Education Subjects of SMA Muhmaadiyah 9 Sedayulawas Brondong Student Year 2022/2023. In the background, students tend to be passive and not in accordance with what is expected, as well as teachers who still use conventional learning or teachers who are very dominating in the learning process, especially in PAI subjects. To address these problems, researchers are interested in using the Active Team Quiz Learning Model as the main model in the PAI learning process. The formulation of the problem behind the research is "Is there an influence of the Active Team Quiz learning model on the Learning Outcomes of Students in Islamic Religious Education class XI of SMA Muhammadiyah 9 Sedayulawas Brondong for the 2022/2023 academic year?". This study used a type of quantitative research. Using the Pre-Experiment design method with one group pretest-posttest design technique. Data collection techniques in the form of observations and tests with a sample of 31 students from class XI of SMA Muhammadiyah 9 Sedayulawas Brondong. The test used the Pearson Product Moment correlation which was calculated at 0.763 the number of respondents 31 with dk – 2 = 29 who obtained r table 0.367 at a significant level of 5%. So rcalculate r>table (0.763 0.355). This shows that H 0 is > rejected and H1 is accepted with an interpretation of the correlation coefficient assessment found at 0.60 – 0.799 which is included in the strong category. As for the significance test using the t test obtained the results of t count 6.3579 and t table 1.699 so that it can be concluded that t count t>table which means that H 0 is rejected and H1 is accepted. Thus, it can be concluded that there is a strong and significant influence of the Active Team Quiz learning model on student learning outcomes in class XI Islamic Religious Education (PAI) subjects of SMA Muhammadiyah 9 Sedayulawas Brondong for the 2022/2023 academic year.
Edad al Primer Parto de la Raza Holstein Friesian en el Ecuador
Authors: Carrillo Álvarez Israel , Cartuche Macas Luis , Chacón Marcheco Edilberto , Ortuño Barba Carlos , Guevara Viera Guillermo 
Published: April 2024

El objetivo de este trabajo fue determinar la edad al primer parto en vacas Holstein Friesian. Distribuidas en su mayoría en la región sierra a una altura que va hasta los 3,800 metros sobre el nivel del mar. La base de datos incluyó: identificación del animal, fecha de nacimiento, fecha de primer parto y ubicación geográfica del predio. En total se obtuvieron 94,163 registros de primer parto entre el período 1971-2019. Como criterio de inclusión se consideró todas las vacas con partos entre 22 y 34 meses primer parto. En Ecuador la edad promedio fue de 48 meses en el año 1971 con un importante descenso de 35-41 meses entre el año 1972-1975 y 30-35 meses entre los años 1976-2018 consolidándose entre 23-29 meses en el año 2019. Paralelamente se demuestra variabilidad entre las categorías alta en relación a la de baja con 15.1 días de diferencia en la región costa mientras que en la región oriente es de 15.69 días y de 13.82 días de diferencia en la región sierra. Este es el primer trabajo realizado en Ecuador, en el que se establece una reducción sostenida de la edad primer parto.
Impacto en el Proceso de Cambio en la Matriz Productiva en el Ecuador
Authors: Calderón Lucio Teresa Del Pilar , Vera Gutiérrez Gema Gabriela , Farfán Menéndez Laura Beatriz , Cano Caicedo Diana Carolina 
Published: April 2024

El modelo actual de matriz productiva ha caracterizado la economía del Ecuador al convertirlo en un país proveedor de materia prima en el mercado internacional y a su vez un ente importador de bienes y servicios, pero los significantes cambios en precios internacionales han desequilibrado la balanza comercial en el país. El tema del cambio de la matriz productiva en Ecuador se desarrolla en el marco de un debate complejo y contradictorio por la diversidad de aristas desde donde se analiza, generando en algunos casos incomprensión del mismo ocasionados por esta diversidad de pensamiento. Partiendo de esta preocupación la autora de este ensayo pretende ofrecer un análisis del tema del cambio de la matriz productiva de Ecuador desde el enfoque de la Economía Política colocando la atención en la teoría del desarrollo considerando su evolución histórica y actual. Se parte de reconocer que la necesidad del cambio en los componentes del desarrollo en Ecuador es el resultado de la mezcla de todo un conjunto de factores internos y externos, los cuales tienen un carácter pluridimensional, al tener un basamento político, económico, histórico, étnico, cultural, y social.
Potential of Red Algae Eucheuma spinosum as Antibacterial to Pseudomonas aeruginosa
Authors: Amir Nur Insani , Nurfadillah Arafah , Dani Tri Rama 
Published: April 2024

Introduction: Eucheuma spinosum is one of Indonesia's potential marine resources that can be used as an antimicrobial. The red algae E. spinosum contains many secondary metabolites which can inhibit the growth of bacteria. This research aimed to determine the optimum inhibitory power of the red algae extract E. spinosum using n-hexane, ethyl acetate, and methanol solvents in inhibiting the growth of Pseudomonas aeruginosa bacteria.Method: The extraction process uses the maceration method with n-hexane, ethyl acetate, and methanol as solvents. Antibacterial testing was carried out using the paper disk diffusion method with soaking for 1 hour and incubating for 24 hours. The extract with the largest clear zone diameter was then tested further using Gas Chromatography-Mass Spectrometry (GCMS) to investigate the compound content in the sample.Results: The solvent that produced the largest inhibition zone diameter was ethyl acetate extract, namely 16.1 mm at a concentration of 4%. Analysis of the compounds contained in the ethyl acetate extract using GCMS showed the presence of hexadecanoic acid which is a terpenoid group.Conclusion: The optimum concentration of red algae E. spinosum extract to inhibit the growth of Pseudomonas aeruginosa was 16.1 mm in 4% ethyl acetate solvent. Key words: Antibacterial, Eucheuma spinosum, Pseudomonas aeruginosa
Modeling of Condensations in Coronal Loops Produced by Impulsive Heating with Variable Frequencies and Locations
Authors: Kucera Therese A. , Klimchuk James A. , Luna Manuel 
Published: April 2024

Abstract
We present the results of models of impulsively heated coronal loops using the 1D hydrodynamic Adaptively Refined Godunov Solver code. The impulsive heating events (which we refer to as nanoflares) are modeled by discrete pulses of energy along the loop. We explore the occurrence of cold condensations due to the effective equivalent of thermal nonequilibrium in loops with steady heating, and examine its dependence on nanoflare timing and intensity and also nanoflare location along the loop, including randomized distributions of nanoflares. We find that randomizing the distribution of nanoflares, both in time/intensity and location, diminishes the likelihood of condensation occurring as compared to distributions with regularly occurring nanoflares with the same average properties. The usual criteria that condensation is favored for heating near loop footpoints and with high cadences are more strict for randomized (as opposed to regular) nanoflare distributions, and for randomized distributions the condensations stay in the loop for a shorter amount of time. That said, condensation can sometimes occur in cases where the average values of parameters (frequency or location) are beyond the critical limits above which condensation does not occur for corresponding steady, non-randomized values of those parameters. These properties of condensation occurring due to randomized heating can be used in the future to investigate the diagnostics of coronal heating mechanisms.
Measuring the Variance of the Macquart Relation in Redshift–Extragalactic Dispersion Measure Modeling
Authors: Baptista Jay , Prochaska J. Xavier , Mannings Alexandra G. , James C. W. , Shannon R. M. , Ryder Stuart D. , Deller A. T. , Scott Danica R. , Glowacki Marcin , Tejos Nicolas 
Published: April 2024

Abstract
The Macquart relation describes the correlation between the dispersion measure (DM) of fast radio bursts (FRBs) and the redshift z of their host galaxies. The scatter of the Macquart relation is sensitive to the distribution of baryons in the intergalactic medium including those ejected from galactic halos through feedback processes. The variance of the distribution in DMs from the cosmic web (DMcosmic) is parameterized by a fluctuation parameter F. In this work, we present a new measurement of F using 78 FRBs of which 21 have been localized to host galaxies. Our analysis simultaneously fits for the Hubble constant H
0 and the DM distribution due to the FRB host galaxy. We find that the fluctuation parameter is degenerate with these parameters, most notably H
0, and use a uniform prior on H
0 to measure

log

10

F
>
−
0.86

at the 3σ confidence interval and a new constraint on the Hubble constant

H

0

=

85.3

−
8.1

+
9.4

km

s

−
1

Mpc

−
1

. Using a synthetic sample of 100 localized FRBs, the constraint on the fluctuation parameter is improved by a factor of ∼2. Comparing our F measurement to simulated predictions from cosmological simulation (IllustrisTNG), we find agreement between redshifts 0.4 < z and z < 2.0. However, at z < 0.4, the simulations underpredict F, which we attribute to the rapidly changing extragalactic DM excess distribution at low redshift.
JWST MIRI Imager Observations of Supernova SN 1987A
Authors: Bouchet P. , Gastaud R. , Coulais A. , Barlow M. J. , Fransson C. , Kavanagh P. J. , Larsson J. , Temim T. , Jones O. C. , Hirschauer A. S. , Tikkanen T. , Blommaert J. A. D. L. , Fox O. D. , Glasse A. , Habel N. , Hjorth J. , Jaspers J. , Krause O. , Lau R. M. , Lenkić L. , Meixner M. , Nayak O. , Rest A. , Sargent B. , Wesson R. , Wright G. S. , Colina L. , van Dishoeck E. F. , Güdel M. , Henning Th. , Lagage P.-O. , Östlin G. , Ray T. P. , Vandenbussche B. 
Published: April 2024

Abstract
There exist very few mid-infrared (IR) observations of supernovae (SNe) in general. Therefore, SN 1987A, the closest visible SN in 400 yr, gives us the opportunity to explore the mid-IR properties of SNe, the dust in their ejecta, and the surrounding medium and to witness the birth of an SN remnant (SNR). The James Webb Space Telescope, with its high spatial resolution and extreme sensitivity, gives a new view on these issues. We report on the first imaging observations obtained with the Mid-InfraRed Instrument (MIRI). We build temperature maps and discuss the morphology of the nascent SNR. Our results show that the temperatures in the equatorial ring (ER) are quite nonuniform. This could be due to dust destruction in some parts of the ring, as had been assumed in some previous works. We show that the IR emission extends beyond the ER, illustrating the fact that the shock wave has now passed through this ring to affect the circumstellar medium on a larger scale. Finally, while submillimeter Atacama Large Millimeter Array observations have hinted at the location of the compact remnant of SN 1987A, we note that our MIRI data have found no such evidence.
A Multiwavelength Light-curve Model of the Classical Nova V339 Del: A Mechanism for the Coexistence of Dust Dip and Supersoft X-Rays
Authors: Hachisu Izumi , Kato Mariko , Matsumoto Katsura 
Published: April 2024

Abstract
The classical nova V339 Del 2013 is characterized by a 1.5 mag dip of the V light curve owing to a dust shell formation, with which soft X-ray emissions coexist. We present a Strömgren y-band light curve, which represents continuum emission, not influenced by strong [O iii] emission lines. The y light curve monotonically decreases in marked contrast to the V light curve that shows a 1.5 mag dip. We propose a multiwavelength light-curve model that reproduces the y and V light curves as well as the gamma-ray and X-ray light curves. In our model, a strong shock arises far outside the photosphere after optical maximum, because later ejected matter collides with earlier ejected gas. Our shocked shell model explains optical emission lines, Hα, hard X-ray, and gamma-ray fluxes. A dust shell forms behind the shock that suppresses [O iii]. This low flux of [O iii] shapes a 1.5 mag drop in the V light curve. Then, the V flux recovers with an increasing contribution from [O iii] lines, while the y flux does not. However, the optical depth of the dust shell is too small to absorb the photospheric (X-ray) emission of the white dwarf. This is the reason that a dust shell and soft X-ray radiation coexist. We determined the white dwarf mass to be M
WD = 1.25 ± 0.05 M
☉ and the distance modulus in the V band to be (m − M)
V
= 12.2 ± 0.2; the distance is d = 2.1 ± 0.2 kpc for the reddening of E(B − V) = 0.18.
Correlations between Ca ii H and K Emission and the Gaia M Dwarf Gap
Authors: Boudreaux Emily M. , Garcia Soto Aylin , Chaboyer Brian C. 
Published: April 2024

Abstract
The Gaia M dwarf gap, also known as the Jao Gap, is a novel feature discovered in the Gaia Data Release 2 G versus BP-RP color–magnitude diagram. This gap represents a 17% decrease in stellar density in a thin magnitude band around the convective transition mass (∼0.35 M
⊙) on the main sequence. Previous work has demonstrated a paucity of Hα emission coincident with the G magnitude of the Jao Gap in the solar neighborhood. The exact mechanism that results in this paucity is as of yet unknown; however, the authors of the originating paper suggest that it may be the result of complex variations to a star’s magnetic topology driven by the Jao Gap’s characteristic formation and breakdown of stars’ radiative transition zones. We present a follow-up investigating another widely used magnetic activity metric, Calcium ii H and K emission. Ca ii H and K activity appears to share a similar anomalous behavior as Hα does near the Jao Gap magnitude. We observe an increase in star-to-star variation of magnetic activity near the Jao Gap. We present a toy model of a star’s magnetic field evolution, which demonstrates that this increase may be due to stochastic disruptions to the magnetic field originating from the periodic-mixing events characteristic of the convective kissing instabilities that drive the formation of the Jao Gap.
Maurice Lagrange, commissaire du gouvernement au Conseil d’État (1929-1940 et 1942-1945)
Authors: Melleray Fabrice 
Published: April 2024

Maurice Lagrange a occupé, pendant environ 15 ans, les fonctions de commissaire du gouvernement près les formations juridictionnelles du Conseil d’État. Il a donc présenté « en toute indépendance » son appréciation et son opinion sur les affaires contentieuses soumises à la haute juridiction. Certaines de ses conclusions ont été publiées dans les principales revues juridiques de l’époque, les plus célèbres étant probablement celles sur l’affaire Minaire (1937, situation des fonctionnaires et interdiction du droit de grève) et celles sur l’affaire Bouguen (1943, nature juridique des ordres professionnels). Ces textes, comme celles sur l’affaire Bujadoux (1937, contrôle de l’interdiction d’une réunion) dessinent les contours des options politiques de l’auteur, en phase avec des positions alors largement développées dans la haute fonction publique sur la place de l’État et de ses agents. Il y défend un État fort, dont les agents doivent être disciplinés. Il réfléchit aux transformations des modalités de l’intervention publique en matière d’organisation des professions et plus largement d’interventionnisme économique. Il promeut aussi l’exercice d’un contrôle exigeant de l’atteinte aux libertés publiques par les mesures de police administrative.
Lagrange, de l’épuration à la Cour de justice de la CECA
Authors: Fritz Vera 
Published: April 2024

Étant donné que la commission d’épuration instituée pour le Conseil d’État n’a prononcé à son encontre qu’un blâme, Maurice Lagrange a poursuivi sa carrière sans encombre après la Seconde Guerre mondiale. Les archives inédites du processus d’épuration lèvent enfin le voile sur la question de savoir pourquoi l’« homme fort de la Révolution nationale administrative » n’a pas été sanctionné davantage, lui permettant ainsi de transiter, en quelques années, du secrétariat général de la vice-présidence du Conseil du gouvernement de Vichy à la première Communauté européenne. La trajectoire d’après-guerre de Maurice Lagrange présente un certain nombre de points communs avec les parcours d’autres membres de la première Cour européenne de justice. Son analyse détaillée et comparée permet ainsi de mener une réflexion plus générale sur les continuités qui ont marqué les débuts de la construction européenne.
À l’écoute des victimes
Authors: Burguburu Jean-Marie , Casagrande Alice , Damiani Carole , De Navacelle Stéphane , Margron Véronique , Muller-Colard Marion , Rosenczveig Jean-Pierre , Sauvé Jean-Marc , Thibaut Florence , Toche Sylvette , Sarthou-Lajus Nathalie , Sèze Benjamin 
Published: April 2024

De 2019 à 2021, la Commission indépendante sur les abus sexuels dans l’Église (Ciase), présidée par Jean-Marc Sauvé, a recueilli la parole de nombreuses victimes dont les vies ont été gravement et durablement abîmées par les violences sexuelles qu’elles ont subies. Ses membres sont des experts, médecins, psychiatres, magistrats, avocats, sociologues ou théologiens, pour la plupart, tous des professionnels de l’écoute dans leur domaine. Néanmoins, on ne s’engage pas impunément dans une telle expérience régulière d’écoute de traumatismes, d’exposition même indirecte au malheur des uns et à la malveillance des autres. Deux ans après la remise du rapport, nous avons souhaité interroger des membres volontaires de cette commission – ainsi que Véronique Margron – sur la manière dont ils ont vécu cette expérience.
« Fariboles littéraires » et « façons de penser » du romantisme
Authors: Schnebelen Florence 
Published: April 2024

Partant du constat qu’on ne se demande plus si le romantisme pense, mais bien plutôt à quoi et comment il pense, cet article cherche à exposer la construction d’une certaine « opinion commune » du romantisme pour interroger les discours de légitimation qui lui sont attachés. Il vise ainsi à montrer comment la critique du xx e siècle a fait du rapport à la philosophie un élément discriminant dans l’étude des œuvres romantiques, qui a pour conséquence d’établir une certaine valeur du romantisme .