bluuebunny/crossref_metadata_2025_split huggingface dataset:
Current State of Alkyd Resin Synthesis and Characterization, Extracted from Vegetable Oils
Authors: Kalu Kalu M. , Emmanuel Michael , Chinedu Emmanuel K. , Saa-Aondo Mtswen , Yelwa Jibril M. , Kenneth Rome , Haruna Naibi A. , Shehu Zaccheus 
Published: February 2024

Alkyd resins' high film-forming capacity, excellent adhesion, and durability to a variety of environmental conditions have led to its major attention in the field of industrial coatings and paint applications. The purpose of this work is to present a thorough overview of the synthesis and characterization of alkyd resins for these particular uses. Thirty-eight (38) vegetable oils were reviewed from 2001 to 2023 whose data were derived from online sources, not excluding google scholar, ScienceDirect and Semantics scholar. Alkyd resins are made by reacting polyols (like glycerol or pentaerythritol) with dicarboxylic acids (like phthalic anhydride), then modifying the mixture with fatty acids or drying oils. The qualities of the resulting alkyd resins are significantly influenced by process variables, including catalysts, reaction conditions, and raw material selection. Numerous methods are used in the characterization of alkyd resins, such as nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FTIR), gel permeation chromatography (GPC), and thermal analysis (TGA/DSC).
These methods offer important insights into the alkyd resins' molecular weight distribution, thermal stability, and chemical structure. Gaining knowledge about the synthesis and characterization of alkyd resins helps to optimize their formulation for use in paint and industrial coatings, improving their performance and durability.
Design Method and Construction Technology in Tunnel Engineering under Complex Geological Conditions
Authors: Tian Siming , Xue Yang , Tian Zhenyan , Shi Shaoshuai , Guo Weidong , Wang Wei , Zhao Ruijie 
Published: February 2024

Over the past 40 years of reform and opening up, China’s railway tunnel construction industry has made great progress. The completed railway tunnels account for nearly 90% of the total length of China’s railway tunnels. At present, China’s tunnel construction technology is relatively advanced, but with the development of tunnel engineering in the southwest, railway tunnel construction is facing a series of major and complex geological problems. This chapter mainly introduces the tunnel design theory and method, support structure system, construction technology, and equipment under complex geological conditions. In addition to the technical problems and challenges faced by the current railway tunnel engineering, this chapter puts forward the development of active support collaborative control concept and technology, digital survey and design, intelligent construction, and intelligent operation and maintenance, so as to provide a useful reference for promoting the development of tunnel engineering.
Study on the Arc Additive Manufacturing Process and Mechanical Properties of Inconel 625 Nickel-Based Alloy Bulk
Authors: Zhao Dong Sheng , Niu Tang Ren , Wang Ji , Liu Yu Jun 
Published: February 2024

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The melt-inert gas-shielded arc additive manufacturing experiment of Inconel 625 nickel-based alloy bulk was carried out. The influence of current mode, current, travel speed, weld bead spacing, deposition path, and arc length on the formation of overlapping weld beads was studied. The incomplete fusion near the bottom weld toe of adjacent weld beads was the main defect. The optimized parameters for bulk additive manufacturing obtained from the experiment were as follows: pulse current of 70 A, travel speed of 200 mm/min, weld bead spacing of 3 mm, dry extension of 10 mm, continuous deposition, and arc length of 1 mm. Due to the thermal influence during the deposition of adjacent weld beads, directional grains were formed inside the weld bead and at the boundary with adjacent weld beads. However, the direction of grain growth was not uniform throughout the entire weld bead, and a consistent texture of the entire weld bead was not formed. The tensile strengths of the specimens in the X, Y, and Z directions were 858.5, 838.7, and 827.2 MPa, respectively, and the fracture elongations were 53.3%, 37.6%, and 42.1%, respectively. The strength in the Z direction, which is the vertical direction, was the lowest.

Keywords
arc additive manufacturing; nickel-based alloy; incomplete fusion; texture
Factors pragmàtics de l'explicitació dels pronoms de subjecte de primera persona en el discurs parlamentari
Authors: Kuzmová Lucie 
Published: February 2024

The explicit use of personal pronouns jo and nosaltres with the syntactic function of sentence subject in a pro-drop language like Catalan carries certain socio-pragmatic information related to the management of social image by the interlocutors. In the present study we focus on the functions of the two subject pronouns in current Catalan parliamentary discourse. The analysis carried out allows us to verify that it is an important resource of the self-image of politicians, which allows them to highlight their attitudes, preferences, or opinions, which can be individual or group. This strategic communicative behavior often includes effects on the figure of other people involved in the communicative situation. The expression of the pronoun can serve to establish a contrast between the speaker and the others and can produce an impolite effect or, on the other hand, the pronoun can serve to maintain equilibrium between the images involved and, in this case, the effect can be polite.
L'explicitació dels pronoms personals jo i nosaltres amb la funció sintàctica de subjecte oracional en una llengua pro-drop com el català comporta certa informació sociopragmàtica relacionada amb la gestió d'imatge social dels interlocutors. En el present estudi ens fixem en les funcions dels dos pronoms de subjecte en el discurs parlamentari català actual. L'anàlisi efectuada ens permet constatar que es tracta d'un recurs important de l'autoimatge dels polítics, que els permet destacar la seva actitud, les seves preferències o opinions, que poden ser individuals o grupals. Aquest comportament comunicatiu estratègic sovint inclou efectes sobre la figura d'altres persones involucrades en la situació comunicativa. L'expressió del pronom pot servir per a establir un contrast entre l'emissor i els altres i pot produir un efecte descortès o, per l'altra banda, el pronom pot servir per a mantenir equilibri entre les imatges involucrades i en aquest cas l'efecte pot ser cortès.
Las construcciones impersonales de sujeto suprimido del gascón
Authors: Fernández Fernández Beatriz , Berro Urrizelki Ane , Suïls Subirà Jordi 
Published: February 2024

In this article we explore the pronominal construction with an undetermined subject in Gascon (Romieu, Bianchi 2005), which involves the se clitic. This construction could be considered passive, and in turn, the se clitic could be thought as an intransitivizer. Alternatively, this construction could be also regarded as an impersonal with a suppressed subject (Blevins 2003). This is actually the hypothesis that we put forward in this paper. As we will show, the implicit subject of the pronominal construction in Gascon is both semantically and syntactically present and, consequently, this configuration could be typified together with not only other se/si constructions in Romance languages like Italian (Cinque 1988), Catalan (Bartra 2002; Fernández, Berro, Pérez Saldanya in press) and Spanish (Mendikoetxea 1999; Ormazabal, Romero 2019) among others, but also with other constructions in genetically non-related languages such as Basque impersonals (Ortiz de Urbina 2003; Fernández, Berro 2021; Berro, Odria, Fernández 2022).
En este artículo analizamos las construcciones pronominales de sujeto indeterminado del gascón (Romieu, Bianchi 2005), que se caracterizan por la presencia del pronombre se. Estas construcciones podrían considerarse oraciones pasivas y el pronombre se, por su parte, un detransitivizador. Alternativamente, podrían también tipificarse como impersonales de sujeto suprimido (Blevins 2003). Esta es la hipótesis que defendemos aquí, para lo cual mostramos que se trata de construcciones transitivas con un sujeto suprimido que está semánticamente presente y sintácticamente activo. Si esta es, como presumimos, la hipótesis correcta, entonces las impersonales del gascón podrían clasificarse junto a las construcciones con se/si de lenguas románicas como el italiano (Cinque 1988), el catalán (Bartra 2002) o el español (Mendikoetxea 1999; Ormazabal, Romero 2019), sino también junto a las impersonales de lenguas sin afiliación genética como el vasco (Ortiz de Urbina 2003; Fernández, Berro 2021; Berro, Odria, Fernández 2022).
La caracterización lingüística de los incunables poéticos de Antón de Centenera
Authors: De Beni Matteo 
Published: February 2024

This article provides a linguistic characterization of the three poetic incunabula published by Antón de Centenera’s printing press in Zamora approximately between 1482 y 1483: one is Gómez Manrique’s Regimiento de príncipes (known as 82*GM according to the signalling system by Dutton 1990-1991), another includes the Vita Christi and the Sermón trobado al rey Fernando by Íñigo de Mendoza (82IM), the last one gathers mainly texts by Íñigo de Mendoza, but also some by others, such as Juan de Mena, Gómez Manrique and Jorge Manrique (83*IM). The analysis involves graphic, syntactic, morphological, lexical aspects, and other characteristics that can be identified in the texts under consideration.
En este artículo se ofrece una caracterización lingüística de los tres incunables poéticos impresos por el taller de Antón de Centenera en Zamora entre 1482 y 1483 aproximadamente: uno transmite el Regimiento de príncipes de Gómez Manrique (conocido como 82*GM, según el sistema de identificación propuesto por Dutton 1990-1991), otro contiene la Vita Christi y el Sermón trobado al rey Fernando de Íñigo de Mendoza (82IM) y el último reúne sobre todo textos de Íñigo de Mendoza, pero también de otros, como Juan de Mena, Gómez Manrique y Jorge Manrique (83*IM). Se examinan los aspectos gráficos, sintácticos, morfológicos, léxicos y también otros elementos lingüísticos documentados en los impresos estudiados.
¿Una Odisea antes de Homero? El Ulises de Álvaro Cunqueiro
Authors: Morales Ortiz Alicia 
Published: February 2024

In 1960, Álvaro Cunqueiro published Las Mocedades de Ulises, a ‘no novel’ of the so-called mythological type in which, following the outline of a Bildungsroman, the author fables the birth and youth of Ulysses and the process of his configuration as a hero, in a sort of 'Odyssey before Homer'. This paper studies the Galician writer's approach to Homer's hero, both in The Mocedades and in other texts, and analyses how much of Homer's Odysseus there is in Cunqueiro's Ulysses.
Álvaro Cunqueiro publicó en 1960 Las Mocedades de Ulises, una ‘no novela’ de las denominadas mitológicas en la que, con el esquema de un Bildungsroman, fabula el nacimiento y juventud de Ulises y el proceso de su configuración como héroe, en una suerte de 'Odisea ante de Homero'. Este artículo estudia el acercamiento del escritor gallego al héroe de Homero, tanto en Las Mocedades como en otros textos, y analiza cuánto hay del Odiseo homérico en el Ulises cunqueiriano.
El "Cancionero de Zaragoza" (92VC y 95VC): estudio material e interno
Authors: Marini Massimo 
Published: February 2024

Thanks to the identification of new copies of the Cancionero de Zaragoza (two of the edition of 1492 and one of 1495) it is now possible to establish the essential guidelines of its material and internal structure. The data now available contribute to a more careful bibliographical description, which in turn leads to a correct chronological distribution of the copies and a more accurate reconstruction of their historical development. On the basis of the materiality of these precious incunabula, it is possible to delve deeper into questions that cover not only the dimension of the copy as an individual element, as a specific object or piece of a specific collection, but also, through these material features, it is possible to approach the model of the edition as the product of a cultural design or plan, animated by a specific intention and aimed at a specific public. This process of analysis, which goes from the copy to the edition, allows us to reconstruct the ideal copy of of this songbook and to shed light on its organisation and the aims of this editorial project, which is an important piece in the history of Castilian literature at the end of the 15th century.
Gracias a la identificación de nuevos ejemplares del Cancionero de Zaragoza (dos de la edición de 1492 y uno de la de 1495) es hoy posible fijar de forma más concreta las pautas esenciales de su estructura material e interna. Los datos de los que hoy se dispone contribuyen a una descripción bibliográfica más cuidada, que a su vez comporta una correcta distribución cronológica de los ejemplares y una reconstrucción más exacta de sus avatares históricos. A partir de la materialidad de estos preciosos testimonios poéticos incunables, se puede profundizar en cuestiones que abarcan no solo la dimensión del ejemplar como elemento individual, como objeto o pieza concreta de una colección determinada, sino que, a través de esos rasgos materiales, es posible acercarse al modelo de la edición en cuanto producto de un diseño o plan cultural, animado por un intento específico y dirigido a un público concreto. Este proceso de análisis que va del ejemplar a la edición, permite reconstruir la copia ideal del Cancionero de Zaragoza y arrojar luz sobre su organización y las perspectivas de este proyecto editorial, que marca un hito en la historia de la literatura castellana de finales del siglo xv.
La poesía del Valerio de las estorias escolásticas y de España:
Authors: Mangas Navarro Natalia Anaís 
Published: February 2024

This work offers the study and critical edition of a poem by Juan Manrique included in the Valerio de las estorias escolásticas y de España, by Diego Rodríguez de Almela. The edition is based on the incunabula printed in Murcia in 1487, by Lope de la Roca and Gabriel Luis de Arinyo, although other manuscripts and printed testimonies close to this edition are taken into consideration. The poetry of Juan Manrique, forgotten and destined to remain in the shadow of Valerio, stands as a panegyric not only addressed to Rodríguez de Almela, but also to Alfonso de Cartagena, bishop of Burgos.
Este trabajo ofrece el estudio y edición crítica de un poema de Juan Manrique incluido en el Valerio de las estorias escolásticas y de España, de Diego Rodríguez de Almela. La edición parte del incunable impreso en Murcia en 1487, por Lope de la Roca y Gabriel Luis de Arinyo, aunque se tienen en consideración otros testimonios manuscritos e impresos cercanos a esta edición. La poesía de Juan Manrique, olvidada y destinada a permanecer a la sombra del Valerio, se erige como un panegírico no solo dirigido a Rodríguez de Almela, sino también a Alfonso de Cartagena, obispo de Burgos.
La transmisión textual de las Coplas a la muerte de Cartagena de Fernán Pérez de Guzmán (ID 1937): variaciones y contextos
Authors: López Casas Maria Mercè 
Published: February 2024

Study of the textual transmission of the poem that Fernán Pérez de Guzmán wrote upon the death of his teacher and friend Alfonso de Cartagena (ID 1937). The manuscripts and printed testimonies that include the poem are presented, also studying what other texts by the author are in them. The variants and variations of the poem's text are analyzed in their context.
Estudio de la transmisión textual del poema que escribió Fernán Pérez de Guzmán a la muerte de su maestro y amigo Alfonso de Cartagena (ID 1937). Se presentan los testimonios manuscritos e impresos que incluyen el poema, estudiando además qué otros textos del autor hay en ellos. Se analizan las variantes y variaciones del texto del poema.
Software Systems in Implementation of Process Safety at Chemical Process Industry
Authors: Kwang Hooi Yew , Hassan M. Fadzil , M. Shariff Azmi , Abdul Aziz Hanida , Suppiah Sujendran 
Published: February 2024

Software systems have been used in chemical industry process safety operation and design to improve its efficiency. This paper provides a brief review and analysis of the state of the art and impacts of software systems in process safety. A study was carried out by interviewing personnel in charge of process safety practices in the Malaysian chemical process industry and digging into literature of technology for process safety. This article explores the functional and operational characteristics of software systems for safety and attempts to categorize the software according to its level of impact in the management hierarchy. The study contributes to better understanding of the roles of Information Communication Technology in process safety, the future trends and possible gaps for research and development.
Keywords: process safety; software systems; computer-aided plant safety; process safety management system.
IN-VITRO ANTICOAGULANT EFFECT OF ORTHOSIPHON STAMINEUS BENTH EXTRACTION ON COAGULATION ASSAYS
Authors: Bahari Mazura , Mohd Fadzil Adil Ashraf 
Published: February 2024

O.stamineus, commonly known as Misai kucing, is widely grown in Southeast Asian and usually used for herbal tea. O.stamineus contains flavonoids. Flavonoids have been reported to exhibit a wide range of biological effect, including anti-platelet actions. This can be potentially had medicinal value for an anticoagulant effect against human blood. This study aims to find out whether O.stamineus extract can affect platelet function results and to compare the effect of different concentrations of O.stamineus on platelet function using normal commercialised human plasma in vitro method. Healthy, fresh of O.stamineus leave cut into smaller part and initially dries on microwave oven at 60oC, after that blender into dried powder. Extract the O.stamineus leave into two solvent, which is methanol and aqueous. Prepare the concentration for both methanol and aqueous extraction 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% and 100%. Measured coagulation assays (PT,aPTT and TT) manually using the in-vitro method. The results for the coagulation test, which are PT, aPTT and TT shows all the concentration showed prolong mean for the entire test compared to control for methanol and aqueous extraction. A significant and excellent correlation between O.stamineus methanol extract and aqueous extraction concentrations PT, aPTT and TT and all p-values are significant. O.stamineus leave extract has been proven to prolong the coagulation time of PT, aPTT and TT. Further study should be proceeded to confirm which component or bioactive compound is exactly the one interfere or inhibit coagulation process.
Keywords: Prothrombin time (PT), activated partial thromboplastin time (aPTT), thrombin time (TT), flavonoids.
FEASIBILITY STUDY OF SQS ATTRIBUTE APPLICATION FOR POROSITY ESTIMATION IN CARBONATE RESERVOIR, CENTRAL LUCONIA
Authors: Varatharajoo Sharanya , Hermana Maman 
Published: February 2024

This study shows the reliability of an improved attribute or elastic properties, namely SQs and SQp to estimate porosity in a carbonate reservoir. Both SQp and SQs attributes are reliable to predict porosity in a carbonate reservoir. However, SQs shows a better correlation (0.96662). Thus it was selected as an input to calculate empirical equation which, was later used to create a porosity model. The model was compared with actual porosity from the real well data, which yielded a high correlation of 0.961911. Thus, SQs is highly reliable to estimate the porosity in the carbonate reservoir through the empirical equation.
Keywords: Elastic properties, Porosity, SQp and SQs, Central Luconia
GLYCEROL-MEDIATED SYNTHESIS OF NITROGEN-DOPED TiO2 WITH EXCELLENT ADSORPTION AND PHOTOCATALYTIC ACTIVITY FOR REMAZOL RED DYE REMOVAL
Authors: Selvaraj Paveethra , Rab Nawaz , Sahrin Nurul Tasnim , Fai Kait Chong 
Published: February 2024

This paper reports the synthesis, characterization, and application of nitrogen-doped TiO2 (N-TiO2) as adsorbent and photocatalyst for the removal of Remazol Red dye (RRD) from aqueous solution. The N-TiO2 was prepared via a sol-gel technique using glycerol and water as solvent mixture and urea as N precursor. The effect of N:Ti molar ratio (15:1, 20:1, and 25:1) and calcination temperature (300, 400, and 500°C) was evaluated on the structural, morphological, optical, and electronic, textural properties as well as the photocatalytic performance of the N-TiO2 nanomaterials. The results demonstrated that the N:Ti molar ratio plays an important role in the formation of crystalline N-doped TiO2 photocatalysts. All the synthesized N-TiO2 were anatase phase with enhanced visible light absorption, displaying narrow bandgaps (2.64‒2.50 eV), small particle sizes ranging from 23.1‒25.2 nm, and a specific surface area ranging from 72.33 to 252.69 m2/g. The N:Ti molar ratio and calcination temperature play a crucial role in pre-equilibrium adsorption and photocatalytic removal of RRD. The N-TiO2 with N:Ti molar ratio of 25:1 was able to remove 95.85% of RRD compared to merely 36.06% by the N:Ti, 15:1, within 30 min of the adsorption process. However, the photocatalytic removal by N:Ti, 15:1 of RRD was drastically enhanced to 100% within 30 min of photoreaction compared to 99.44% by N:Ti, 25:1. The RRD removal via adsorption by N:Ti, 25:1 was increased from 36.06% to 78.53% and 96.05% with increasing calcination temperature from 300 to 400 and 500°C, respectively. The RRD removal via photocatalysis was 87.30%, 97.41, and 99.44%, when the photocatalyst was calcined at 300, 400, and 500°C, respectively. The outcome from this work suggests that N-TiO2 has good potential when employed as an adsorbent and photocatalyst for RRD removal from textile wastewater.
Keywords: adsorption, Nitrogen-doped TiO2, photodegradation, remazol red dye
Pelatihan Pembelajaran Digital Untuk Guru dan Sekolah MI Unggulan Al Kahfi
Authors: Ermanto  , Muhidin Asep , Triwibowo Edi 
Published: February 2024

Penyelenggara pendidikan harus mampu melakukan penyesuaian terhadap peralihan metode pembelajaran yang harus dilakukan. Dalam proses pembelajaran daring, guru harus mengikuti perkembangan dalam beradaptasi dengan penggunaan teknologi baru. Program pengabdian kepada masyarakat ini merupakan kegiatan pelatihan yang bertujuan untuk membekali dan meningkatkan keterampilan para guru MI Yayasan Alby Wan Nur Cileungsi Bogor untuk memberikan pembelajaran yang menarik dengan menggunakan media pembelajaran interaktif berbasis digital. Hasil observasi di lapangan masih banyak guru di merasa kesulitan dalam proses pembelajaran berbasis digital, seperti belum mengetahui aplikasi atau platform apa yang dapat digunakan untuk KBM secara digital. Berdasarkan masalah tersebut, maka tujuan dari kegiatan ini adalah memberikan pelatihan guru-guru Guru MI Yayasan Alby Wan Nur Cileungsi Bogor dalam memanfaatkan penggunaan media pembelajaran berbasis digital untuk meningkatkan literasi numerasi siswa. Metode penyelenggaraan pelatihan ini dengan pelatihan dan pendampingan.
Kata Kunci: Pembelajaran, Digital, KBM, Media.