bluuebunny/crossref_metadata_2025_split huggingface dataset:
Responses of feldspathic sandstone and sand-reconstituted soil C and N to freeze–thaw cycles
Authors: Zhang Haiou , Yang Chenxi , Wu Xueying , Guo Zhen , Wang Yingguo 
Published: January 2023

Abstract
The Mu Us Desert in China is significantly affected by seasonal freeze–thaw processes. In order to evaluate the adaptation potential of reconstituted soil with different proportions of feldspathic sandstone and sand to extreme environment, the laboratory simulation freeze-thaw experiments was conducted to study the characteristics of soil C and N under freeze–thaw conditions. The results showed that the content of soil organic matter reached the peak after two cycles of freezing and thawing in T1, T2 and T3, compared to before freeze–thaw cycle, the soil organic matter content increased by 70, 55 and 59%. After ten cycles of freezing and thawing, the content of soil organic matter increased significantly in T2 and T3. After one cycle of freezing and thawing, soil nitrogen content reached the peak. After ten cycles of freeze–thaw cycle, compared to before freeze–thaw cycle, the contents of ammonium nitrogen increased by 10, 49 and 11%, and the contents of nitrate nitrogen increased by 14, 39 and 34% in T1, T2 and T3. In conclusion, short-term freeze–thaw cycles in the Mu Us Desert significantly increased the accumulation of soil carbon and nitrogen reconstructed by different ratios of feldspathic sandstone and sand, and T2 and T3 treatments had better retention performance on soil organic matter and nitrogen, which has a good adaptability to the extreme environment.
Bias attenuation results for dichotomization of a continuous confounder
Authors: Gabriel Erin E. , Peña Jose M. , Sjölander Arvid 
Published: January 2023

Abstract
It is well-known that dichotomization can cause bias and loss of efficiency in estimation. One can easily construct examples where adjusting for a dichotomized confounder causes bias in causal estimation. There are additional examples in the literature where adjusting for a dichotomized confounder can be more biased than not adjusting at all. The message is clear, do not dichotomize. What is unclear is if there are scenarios where adjusting for the dichotomized confounder always leads to lower bias than not adjusting. We propose several sets of conditions that characterize scenarios where one should always adjust for the dichotomized confounder to reduce bias. We then highlight scenarios where the decision to adjust should be made more cautiously. To our knowledge, this is the first formal presentation of conditions that give information about when one should and potentially should not adjust for a dichotomized confounder.
Determinants of language change in the Gurage area of Ethiopia
Authors: Feleke Tekabe Legesse 
Published: January 2023

Abstract
This study aims to examine linguistic and non-linguistic determinants that contribute to language change in the Gurage area of Ethiopia. The linguistic and non-linguistic determinants were investigated by combining methods of dialectometry and mutual intelligibility. Principally, the study was interested in the potential influences of three linguistic factors (mutual intelligibility, contact-induced diffusion of linguistic features, and borrowing from dominant languages) and four non-linguistic factors (between-speakers contact, geographical distance, population size, and attitude of the speakers). Statistical analyses performed on the aforementioned factors show that the linguistic determinants significantly contribute to language change in the Gurage area. Geographical distance, attitude of the speakers, and contact among the speakers are the major non-linguistic contributors. Population size has a marginal influence.
Linking the Monte Carlo radiative transfer algorithm to the radiative transfer equation
Authors: Valades-Pelayo Patricio J. , Ramirez-Cabrera Manuel A. , Balbuena-Ortega Argelia 
Published: January 2023

Abstract
This manuscript presents a short route to justify the widely used Monte Carlo Radiative Transfer (MCRT) algorithm straight from the Radiative Transfer Equation (RTE). In this regard, this paper starts deriving a probability measure obtained from the integral formulation of the RTE under a unidirectional point source in an infinite domain. This derivation only requires the analytical integration of the first two terms of a perturbation expansion. Although derivations have been devised to clarify the relationship between the MCRT and the RTE, they tend to be rather long and elaborate. Considering how simple it is to justify the MCRT from a loose probabilistic interpretation of the photon’s physical propagation process, the decay in popularity of former approaches relating MCRT to the RTE is entirely understandable. Unfortunately, all of this has given the false impression that MCRT and the RTE are not that closely related, to the point that recent works have explicitly stated that no direct link exists between them.
This work presents a simpler route demonstrating how the MCRT algorithm emerges to statistically sample the RTE explicitly through Markov chains, further clarifying the method’s foundations.
Although compact, the derivation proposed in this work does not skip any fundamental step, preserving mathematical rigor while giving specific expressions and functions.
Thus, this derivation can help devise efficient ways to statistically sample the RTE for different scenarios or when coupling the MCRT method with other methods traditionally grounded in the RTE, such as the Spherical Harmonics and Discrete Ordinates methods.
Integrating stabilizer efficiency of secondary antioxidants to thermal, rheological, optical characterization and filterability study of polypropylene
Authors: Singh Priyanka , Singh Vishwa Pratap , Prajapati Madhukar , Melkar Ashwith , Kumar Ravi , Banerjee Saikat , Samanta Satyajit 
Published: January 2023

Abstract
The framework of the present study is based on investigation of different types of phosphorus based secondary antioxidants and their role in stabilization of polypropylene. Three different chemical entities i.e., Tris (2,4-di-tert-butylphenyl) phosphite, Tetrakis (2,4-di-tert-butylphenyl)-4,4-biphenyldiphosphonite and Bis (2,6-di-tert-butyl-4-methylphenyl pentaerythritol-diphosphite) have been studied for its efficiency as a secondary antioxidants or processing stabilizer. Thermal stability of polymer is predicted using degradation kinetics study and correlated with it’s optical, thermal and rheological response. To further evaluate performance of secondary antioxidants, thermogravimetry analysis was performed for polypropylene at three different heating rates and processed for iso-conversional analysis to get the kinetic parameters. Oxidation induction data and kinetic parameters have been related with efficiency of the stabilizers. Filtration study was also carried out to understand the efficacy of stabilizers during secondary process. Die pressure build up in filtration study is quantified and related with performance of secondary antioxidants.
Influence of series of long-chain cationic surfactants on the quality characteristics of nano silica induced zinc phosphated mild steel
Authors: Thomas Ruby , Umapathy Manickam Janarthanam , Ravi Giridharan 
Published: January 2023

Abstract
Mild steel panels were zinc phosphated employing environmentally safe nano silica as an accelerator and a series of four cationic surfactants as additives. The four cationic surfactants chosen were decyltriethyl ammonium bromide (C10TEAB), dodecyltriethyl ammonium bromide (C12TEAB), hexadecyltriethyl ammonium bromide (C16TEAB), and octadecyltriethyl ammonium bromide (C18TEAB). The length of the alkyl chain of the surfactant compounds influenced the quality of the coatings. The corrosion resistance of the coated panels was assessed using a salt spray test. The hydrophobicity of the coatings increased as the hydrocarbon chain length of the surfactants extended from C10 to C18. Porosity, adhesion, and roughness tests were used to examine the surface properties of the coated panels. The coating weight and thickness of the resultant coatings on the base metal were used to quantify coating quality. The results of the tests revealed that the presence of C16TEAB additive outperformed all other components in terms of coating efficiency, coating thickness, and corrosion inhibition performance. The optimal quantity of C18TEAB deposited had a maximum coating weight of 0.0430 g/mm2 that enhanced durability, appearance, and barrier qualities.
Parental influence in orthodontic treatment: a systematic review
Authors: Nobre Ricardina , Pozza Daniel H. 
Published: January 2023

The reasons for searching orthodontic treatment in pediatric/adolescent patients are multifactorial. The aim of this systematic review was to study the parental influence in this process.
This study comprises a systematic review of the literature, based on the recommendations of the Preferred Reporting Items for Systematic Reviews and Meta-Analyzes. We analyzed 41 articles related to the study hypothesis, 29 of which followed the general inclusion criteria, and 21 specific studied the parental influence in orthodontic treatment.
The results demonstrated that dental aesthetics and facial appearance were the main triggering factors related to the search for orthodontic treatment. Pair influence also plays an important role. The perception of malocclusion and the motivation are factors that emphasize the importance of parents in this process. Parental support was identified as a positive factor in orthodontic success reported in most of the studies.
Parental influence has a positive effect on orthodontic treatment and should be understood by clinicians as a central factor in achieving the desired treatment plans.
The Kidney Failure Risk Equation: Evaluation of Novel Input Variables including eGFR Estimated Using the CKD-EPI 2021 Equation in 59 Cohorts
Authors: Grams Morgan E. , Brunskill Nigel J. , Ballew Shoshana H. , Sang Yingying , Coresh Josef , Matsushita Kunihiro , Surapaneni Aditya , Bell Samira , Carrero Juan J. , Chodick Gabriel , Evans Marie , Heerspink Hiddo J.L. , Inker Lesley A. , Iseki Kunitoshi , Kalra Philip A. , Kirchner H. Lester , Lee Brian J. , Levin Adeera , Major Rupert W. , Medcalf James , Nadkarni Girish N. , Naimark David M.J. , Ricardo Ana C. , Sawhney Simon , Sood Manish M. , Staplin Natalie , Stempniewicz Nikita , Stengel Benedicte , Sumida Keiichi , Traynor Jamie P. , van den Brand Jan , Wen Chi-Pang , Woodward Mark , Yang Jae Won , Wang Angela Yee-Moon , Tangri Navdeep 
Published: January 2023

Background
The kidney failure risk equation (KFRE) uses age, sex, GFR, and urine albumin-to-creatinine ratio (ACR) to predict kidney failure risk in people with GFR <60 ml/min per 1.73 m2.

Methods
Using 59 cohorts with 312,424 patients with CKD, we tested several modifications to the KFRE for their potential to improve the KFRE: using the CKD-EPI 2021 creatinine equation for eGFR, substituting 1-year average ACR for single-measure ACR and 1-year average eGFR in participants with high eGFR variability, and adding 2-year prior eGFR slope and cardiovascular comorbidities. We also assessed calibration of the KFRE in subgroups of eGFR and age before and after accounting for the competing risk of death.

Results
The KFRE remained accurate and well calibrated overall using the CKD-EPI 2021 eGFR equation. The other modifications did not improve KFRE performance. In subgroups of eGFR 45–59 ml/min per 1.73 m2 and in older adults using the 5-year time horizon, the KFRE demonstrated systematic underprediction and overprediction, respectively. We developed and tested a new model with a spline term in eGFR and incorporating the competing risk of mortality, resulting in more accurate calibration in those specific subgroups but not overall.

Conclusions
The original KFRE is generally accurate for eGFR <45 ml/min per 1.73 m2 when using the CKD-EPI 2021 equation. Incorporating competing risk methodology and splines for eGFR may improve calibration in low-risk settings with longer time horizons. Including historical averages, eGFR slopes, or a competing risk design did not meaningfully alter KFRE performance in most circumstances.
EFFECTS OF PRE-OXIDATION ON HOT CORROSION RESISTANCE OF Al–Si COATINGS
Authors: Lv Haishuang , Li Yanmei , Li Yabin , Fan Naiwen 
Published: January 2023

In this study, effects of pre-oxidation on the hot corrosion behaviour of Al–Si coatings in a Na2SO4 and 25 w/% NaCl mixture at 900 °C were investigated. The results showed that after 120 h of corrosion, a large amount of β-NiAl residual was found with no obvious sulphides or oxidation in the pre-oxidised Al–Si coating. The pre-formed oxide film on the pre-oxidised coating prevented external O2– and species such as S2– and Cl– from the molten salts from directly contacting the coating and reduced the rate of TiO2 formation in the oxide layer, thus forming an Al2O3-based oxide film and reducing the growth rate of the oxide film on the coating surface. Cracking and peeling of the oxide film, caused by the internal stress owing to the difference in the thermal expansion coefficient between the oxides in the oxide layer, are suppressed; thus, the hot corrosion resistance of the coating is significantly improved.
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Poesías de Agripina Montes del Valle. Tomo I
Authors: Pombo Rafael 
Published: January 2023

Del espíritu y el corazón de la autora del presente tomo básteme comunicar un rasgo a mis lectores: ella misma me exigió que en mi prólogo me abstuviese de elogiarla, complaciéndose sobremanera en mi idea de consagrarlo a estimular a un sexo en los esfuerzos de la inteligencia aplicados al desarrollo y mejoramiento de la sociedad; y a vindicar a este contra el funesto e irreflexivo desdén con que los hombres y las mujeres mismas, sobre todo en ciertos países, suelen pagar sus bien intencionadas producciones. Esta colección es, desde luego, sólo una muestra de lo que la señora del Valle puede hacer, y faltan en ella dos poesías sobresalientes que acaba de escribir con motivo del Centenario del libertador.
Prólogo de Rafael Pombo. En Agripina Montes del Valle (1883), Poesías, Tomo I (pp. III-LII). Zalamea Hermanos. Versión digital: https://catalogoenlinea.bibliotecanacional.gov.co/client/es_ES/search/asset/62879/0
Del estruendo de la guerra al silencio de su rastro. Desplazamientos de la poesía de la violencia en Colombia
Authors: Clavijo Tavera Daniel 
Published: January 2023

Este artículo busca dar cuenta de los cambios -expresivos, temáticos y enunciativos- que ha experimentado la poesía colombiana que se ha ocupado de los fenómenos de violencia, desde mediados del siglo xx hasta la actualidad. El texto inicia con un recuento de ciertos desplazamientos de la práctica poética en distintos contextos alrededor del mundo, con el fin de inscribir las expresiones colombianas en dichos tránsitos. Posteriormente, con base en algunos esfuerzos historiográficos de periodización de la violencia en Colombia, se describen algunas de las diferencias más acentuadas entre las expresiones poéticas del llamado período de la Violencia y la que ha abordado las violencias relacionadas con el conflicto armado, para establecer las maneras y las implicaciones de lo que podría entenderse como un viraje hacia el silencio.
Una aproximación a la musicalización de textos poéticos en Chile: tres ejemplos de su desarrollo y su relación con el canon literario
Authors: Meza Alegría Gabriel 
Published: January 2023

En este artículo analizo algunos aspectos claves del desarrollo y la evolución de las musicalizaciones de textos poéticos en Chile y profundizo en su relación con el canon literario. El análisis lo realizo tomando como referencia tres producciones de relevancia en el escenario músico-poético chileno: la musicalización del poema Alturas de Macchu Picchu de Pablo Neruda por Los Jaivas (1981), el disco Desiertos de amor (2011) de Raúl Zurita junto al grupo González y Los Asistentes, y la musicalización de poemas de Elicura Chihuailaf por el grupo Kalfu en su disco Trawvn = ReUnión (2017). En términos generales, el estudio propone que las musicalizaciones de poesía constituyen un aporte a los estudios literarios, ya que permiten ampliar las perspectivas de análisis más allá de lo textual, lo que ropicia un entendimiento más profundo de las particularidades de la producción poética.
Alejandra Pizarnik y el no-lugar de los cuerpos poéticos: delirio y pulsión creadora
Authors: Pais Álvarez Natalia 
Published: January 2023

El intimismo de Alejandra Pizarnik, tejedora de palabras de tormento y locura, deja entrever los infiernos irracionales y musicales que atraviesan una particular expresión de psique poética: la palabra que se atreve a decir una noche que presagia elegía. La palabra herida y la vida fatalmente rota de esta autora ponen al lector en un diálogo permanente entre el vitalismo y el existencialismo. El propósito de este artículo es reflexionar sobre los límites de la voluntad humana y la relación entre vida y obra literaria, a partir de una disertación sobre los textos de Pizarnik, quien más que afanarse en embellecer la resignación, prefiere indagar acerca del destino y el sentido de la palabra poética, enjaulada e incapaz de expresar las heridas del ser. Busca, desde figuras retóricas precisas y de incuestionable impacto sensorial, el lugar de los cuerpos poéticos en los entresijos de una existencia inadaptada y sin brújula. Existencia que es espejo (o acaso abismo) de la realidad develada por una poesía filosófica en busca de sentido y deseo imposibles, pero cuya búsqueda sigue siendo un tópico necesario de la literatura.
La escena imposible: dialogismo, diálogo y diálogo teatral en la narrativa de Tomás Carrasquilla
Authors: Viviescas Víctor 
Published: January 2023

Resumen: Bajtín postula la categoría de dialogismo como propia de la novela, en tanto la niega en el teatro. La escritura narrativa de Carrasquilla configura un ejercicio potente de dialogismo, pero la narrativa dialógica de la novela se ve asediada constantemente por los fantasmas del diálogo y la escena teatrales. Este artículo busca poner en relieve esta condición híbrida de la narrativa de Carrasquilla y de postular la hipótesis de que la escena teatral es incorporada por Carrasquilla a la textura de la escritura de la novela, en un proceso de dramatización del texto de la novela que está en contravía del proceso de novelización de todos los géneros que establece Bajtín. Esta escena teatral es, no obstante, imposible en el terreno del drama, puesto que reclama y se acoge a un tejido épico. Descriptores: Novela; Drama; Teatro; Colombia; Carrasquilla; Tomás; Dialogismo; Dramatización de la novela; Epización del drama; Literatura contemporánea. Abstract: Bakhtin affirms that the category of dialogism belongs to the novel and at the same time denies its relation to drama. Carrasquilla's narrative writing is a powerfuk exercise of dialogism, but the dialogical narrativity of the novel is constantly harassed by the ghosts of dialogue and theatrical scenes. This article aims to show the hybrid condition of Carrasquilla's narrative. Furthermore, it proposes the hypothesis that the theatrical scene is incorporated by the author into the texture of novel writing, in a process of dramatization of the text novel which goes against the process of novelization of all genres established by Bakhtin. Key words: Novel; Drama; Dialogism and dramatization.
La escritura y la búsqueda de la subjetividad femenina. Tres protagonistas de Soledad Acosta de Samper
Authors: Aguirre Beatriz 
Published: January 2023

Resumen: Este artículo expone dos aspectos de la novelística de Soledad Acosta de Samper. El primero plantea la definición de la relación mujer - escritura y la subjetividad femenina a través de un imaginario de ‘mujer' en las novelas: Dolores, cuadros de la vida de una mujer (1867), Doña Gerónima. Novela de costumbres neogranadinas (1878) y Anales de un paseo (1879-1880). De otro lado, se explora la paulatina experimentación de Acosta en la representación de personajes femeninos y en aspectos de la escritura misma como la voz narrativa, el manejo del tiempo, la fragmentación de los espacios, entre otros. Descriptores: Acosta de Samper, Soledad; escritura femenina; subjetividad femenina; Dolores, cuadros de la vida de una mujer; Doña Gerónima. Novela de costumbres neogranadinas; y Anales de un paseo. Abstract: Soledad Acosta de Samper´s novel writing is the focus of this article. The first issue explored is the way she defines the relationship woman - writing and female subjectivity through an imaginary of ‘woman' in her novels: Dolores, cuadros de la vida de una mujer (1867), Doña Gerónima. Novela de costumbres neogranadinas (1878) y Anales de un paseo (1879-1880). The second issue examined is her continuous experimentation about the representation of female characters and on the very writing itself by means of the use of different narrative voices, the breaking of linear chronology, the fragmentation of spaces among others. Key words: Acosta de Samper, Soledad; female writing; female subjectivity; Dolores, cuadros de la vida de una mujer; Doña Gerónima. Novela de costumbres neogranadinas; y Anales de un paseo.
Resemantización de la historia "indebida" de una nación (in)imaginada: literatura colombiana y narcotráfico (Inventario)
Authors: Blanco Puentes Juan Alberto 
Published: January 2023

Resumen: El presente artículo hace el inventario parcial de una serie de textos que se han encargado de mantener el recuerdo escrito de un momento determinado de la historia colombiana, en el que aparece el narcotráfico como fenómeno trascendental en la fábula de una país aún en formación, y en el que modernidad se confundió con modernización, pues la nación converge en sí misma, buscándose para tratar de reconocer las causas de su propia historia y a su vez convertir la escritura en ejercicio latente de la memoria. Descriptores: Literatura colombiana, narcotráfico y novela, historia y nación, modernidad/modernización, visión de mundo. Abstract: The present article makes I inventory partially of a series of texts that have taken charge of maintaining the written memory of the certain moment of the Colombian history, in which appears still the drug traffic like momentous phenomenon in the fable of a country in formation, and in the one that modernity with modernization, because the nation converges in itself, looking for stops to be about recognizing the causes of its own history and in turn to transform the writing into latent exercise iof the memory. Key words: Colombian literature, drug traffic and novelizes, history and nation, modfernity/modernization, world vision.