bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigation of phytochemical constituents, GC-MS, DPPH free radical scavenging assay, and mineral contents of Glochidion sphaerogynum (Mull. Arg.) Kurz bark extract
Authors: Brahma Priyanka , Baruah Sanjib
Published: January 2023

The aim of the present study was to assess phytochemical constituents, chemical composition, DPPH free radical scavenging assay and mineral contents of Glochidion sphaerogynum (Mull.Arg.) Kurz bark extract. Standard procedures were used to test preliminary phytochemical constituents as well as quantitative analysis for total alkaloid, flavonoid, saponin, tannin, phenolic and terpenoid content. The extract was examined using gas chromatography-mass spectrometry (GC-MS) to know the biologically active compound. In-vitro antioxidant potential was investigated using DPPH free radical scavenging assay and the IC50 value for the antioxidant activity of bark extract was 37.4479 ?g/mL. The qualitative phytochemical investigation revealed the presence of important phytochemical constituents as well as considerable amounts of total alkaloid, flavonoid, saponin, tannin, phenolic and terpenoid content. GC-MS revealed the presence of biologically active compounds like 1,1,6-Trimethyl-3-methylene-2-(3,6,10,13,14-pentamethyl-3-ethenyl-pentadec-4-enyl)cyclohexane; Benzenepropanoic acid, 3,5-bis(1,1-dimethyl ethyl)-4-hydroxy-, methyl ester; Neophytadiene etc which would be important for medicinal industries. Mineral contents were determined by using Atomic Absorption Spectrometry (AAS). The result revealed the presence of a good concentration of Na (10.552±0.343 ppm) and Ca (8.973±0.310 ppm) elements followed by K, Fe, Mg and Mn and very less concentrations of heavy metals such as Cd, Cr and Pb indicated the species was devoid of harmful metals.
Wokół elitaryzmu. Trzy przypadki
Authors: Świeściak Alina
Published: January 2023

Artykuł proponuje spojrzenie na krytykę literacką po 1989 roku z perspektywy zmieniającego się rozumienia i recepcji społecznej pojęcia elit i elitaryzmu. Autorka, nawiązując do różnych teorii elit – przede wszystkim nowszych, dla których najważniejszym punktem odniesienia jest koncepcja dystynkcji Pierre’a Bourdieu – pokazuje, jak koncepcje te uzgadniają się z estetycznymi i społecznymi dominantami polskiego życia literackiego po przełomie politycznym 1989 roku. W trzech „przypadkach krytycznych”: artykułu Krzysztofa Uniłowskiego z 2005 roku, facebookowej akcji związanej z „aukcyjną” sprzedażą książki poetyckiej Konrada Góry z 2020 roku oraz rysujących się w ostatnich latach nowych tendencji w języku młodego pokolenia krytyków, interesują ją relacje pomiędzy literaturą i krytyką literacką a dominującymi tendencjami estetycznymi i kontekstem społeczno-politycznym, dla których „papierkiem lakmusowym” są w niniejszym tekście pojęcia elit i elitaryzmu oraz ich różnie wykorzystywany potencjał manipulacyjny: analitycznie lub perswazyjnie, świadomie lub nieświadomie, w dobrej lub złej wierze itd.
Co robi twój podmiot? O sprzecznej historii podmiotu lirycznego
Authors: Koronkiewicz Marta
Published: January 2023

Celem artykułu jest przeanalizowanie sprzeczności i niejednoznaczności zawartych w strukturalistycznym pojęciu „podmiot liryczny”. Badaczka przywołuje współczesne użycia tego pojęcia oraz historię pokrewnych koncepcji, by przez ten pryzmat wskazać istotne przesunięcia w domyślnym rozumieniu instancji nadawczej we współczesnej krytyce literackiej. Pierwotna programowa – zamierzona i politycznie motywowana – abstrakcyjność koncepcji „podmiotu lirycznego” została zredukowana do ogólnej intuicji o nietożsamości autora i podmiotu mówiącego, wtórnie zaś utrudnia postrzeganie instancji nadawczych jako efektów konkretnych i znaczących decyzji autorskich.
Solidarność rozszerzona. O feministycznej lekturze Czarnych słów Anny Świrszczyńskiej
Authors: Szopa Katarzyna
Published: January 2023

Niniejszy artykuł poświęcony jest wybranym strategiom lekturowym twórczości poetyckiej Anny Świrszczyńskiej na przykładzie Czarnych słów (1967), książki, która w moim odczytaniu przedstawia nierozerwalny splot trzech społecznych uwarunkowań: płci, rasy i klasy. Dominująca w odczytaniu jej poezji ahistoryczna kategoria płci jest tym, co maskuje ów złożony obraz stosunków społecznych, jaki wyłania się z twórczości poetki. Przyjmując założenia feministycznych teorii społecznej reprodukcji, wskazuję, że sytuacja bohaterek Czarnych słów nie tylko różni się od tej ukazanej w Jestem baba, ale odsłania też przed nami etyczny projekt Świrszczyńskiej, który określam mianem solidarności rozszerzonej.
Lewica bez klasy. O pewnej linii zaangażowanej krytyki przełomu wieków
Authors: Kaczmarski Paweł
Published: January 2023

Celem artykułu jest wskazanie (wybranych) przyczyn i strategii usuwania pojęcia klasy z polskiego dyskursu krytycznoliterackiego po roku 1989. Przedmiotem analizy jest przede wszystkim pewna tradycja niemarksistowskiej krytyki lewicowej, określona nazwiskami Marii Janion, Kingi Dunin i Igora Stokfiszewskiego. Artykuł wskazuje, w jaki sposób ogólna wizja świata i polityki implicytnie szkicowana w pracach wymienionych krytyków wyklucza możliwość znaczącego wykorzystania pojęcia klasy.
Movement Disorders Associated With Radiotherapy and Surgical Procedures
Authors: Surisetti Bharath Kumar , Prasad Shweta , Holla Vikram Venkappayya , Kamble Nitish , Yadav Ravi , Pal Pramod Kumar
Published: January 2023

Occasionally, movement disorders can occur following interventional procedures including but not limited to radiotherapy, dental procedures, and cardiac, cerebral and spinal surgeries. The majority of these disorders tend to be unexpected sequelae with variable phenomenology and latency, and they can often be far more disabling than the primary disease for which the procedure was performed. Owing to poor knowledge and awareness of the problem, delays in diagnosing the condition are common, as are misdiagnoses as functional movement disorders. This narrative review discusses the phenomenology, pathophysiology, and potential treatments of various movement disorders caused by interventional procedures such as radiotherapy and neurological and non-neurological surgeries and procedures.
Current Status and Future Perspectives on Stem Cell-Based Therapies for Parkinson’s Disease
Authors: Cha Young , Park Tae-Yoon , Leblanc Pierre , Kim Kwang-Soo
Published: January 2023

Parkinson’s disease (PD) is the second most common neurodegenerative disorder after Alzheimer’s disease, affecting 1%–2% of the population over the age of 65. As the population ages, it is anticipated that the burden on society will significantly escalate. Although symptom reduction by currently available pharmacological and/or surgical treatments improves the quality of life of many PD patients, there are no treatments that can slow down, halt, or reverse disease progression. Because the loss of a specific cell type, midbrain dopamine neurons in the substantia nigra, is the main cause of motor dysfunction in PD, it is considered a promising target for cell replacement therapy. Indeed, numerous preclinical and clinical studies using fetal cell transplantation have provided proof of concept that cell replacement therapy may be a viable therapeutic approach for PD. However, the use of human fetal cells remains fraught with controversy due to fundamental ethical, practical, and clinical limitations. Groundbreaking work on human pluripotent stem cells (hPSCs), including human embryonic stem cells and human induced pluripotent stem cells, coupled with extensive basic research in the stem cell field offers promising potential for hPSC-based cell replacement to become a realistic treatment regimen for PD once several major issues can be successfully addressed. In this review, we will discuss the prospects and challenges of hPSC-based cell therapy for PD.
How concept-based language instruction works in teaching thinking for speaking in an L2
Authors: Stam Gale , Urbanski Kimberly , Lantolf James , Smotrova Tetyana
Published: January 2023

This paper investigates the question of whether systematically organized instruction in L2 thinking for speaking (TFS) can promote a shift from verb-framed L1 (Spanish) to satellite-framed L2 (English) TFS that encompasses the ability to appropriately express in speech and in gesture Path and Manner of Motion in the new language. A pretest narration-instruction-posttest narration design was used to evaluate whether the TFS patterns of seven L1 Spanish learners of L2 English changed as a result of Concept-Based Language Instruction. Learners’ pretest narrations showed primarily L1 patterns with some intermittent L2 TFS patterns. Following instruction, learners showed a shift to more L2 TFS patterns both linguistically and crucially gesturally, including the use of manner verbs, accumulation of path components within a single clause along with multiple path gestures, and boundary crossing gestures. These findings indicate that explicit Concept-Based Language Instruction is able to produce changes in TFS patterns that have not been possible even with extensive immersion.
Brand image innovation design based on the era of 5G internet of things
Authors: Wu Dan
Published: January 2023

The development of the times is driving the competition in the market. In the current trend of the brand era, if a brand cannot fully display its own personality, it is difficult to be competitive. With the development of Internet of things (IoT) technology, different enterprise values produce different types of products and affect all aspects of social economy and daily life. This article mainly studies the innovative design of brand image based on 5G IoT era. This article takes the consumer group as the positioning object, is committed to shaping the core value of the brand, and applies the emotional personality psychology of consumers to the rational brand planning. Creating a perfect brand image and an accurate brand development track is an effective guarantee to promote and enhance brand development. The standard font of the logo combination is the combination of Chinese and English. The advantage of the combination of Chinese and English lies in the combination of nationality and cosmopolitanism. It is not only a new cultural phenomenon but also has strong operability, which meets the requirements of logo design internationalization. The explanatory capacity of the model increases with the entry of product image, corporate image, and self-consistency. The combined explanatory capacity of the three variables reaches 42.2%. The significance probability of the F test is p = 0.000, which is significantly less than 0.01, indicating that the regression of the model is significant. Except for “imaginative,” girls’ scores on the other seven brand personality dimensions are equal to or higher than boys’. The results show that the innovative design of brand image has far-reaching significance for the long-term development of the brand.
Heritage language socialization at work: Spanish in Miami
Authors: Lynch Andrew
Published: January 2023

In recent decades, the increasingly blurred boundaries between work, home, and various other spheres of social life have brought greater complexity to the notion of the workplace. In many contemporary workplace environments in the U.S., the demand for Spanish is unequivocal and uncontested; in some areas, Spanish is ade factorequirement. Because U.S. Latinx bilinguals show a broad social preference for English and lack formal education in Spanish, they may feel challenged to meet workplace language demands in Spanish, particularly where specialized vocabulary or formal registers are concerned. Carried out in the highly dynamic bilingual context of Miami, this study posed the following questions: Do adult heritage speakers of Spanish in Miami – where a broad majority of the population speaks Spanish – appear to draw linguistic benefits from participation in the local labor market? Does this participation have the potential to curtail language loss? To answer these questions, semi-structured interviews were carried out with heritage speakers of Spanish in Miami. Their personal accounts of adult heritage language socialization suggest that Spanish use in the U.S. workplace is a highly situated, localized discourse practice that depends largely on the individuals involved. Despite the uncontested value of Spanish in Miami and the demand to speak it in most workplace settings, conscious choice to do so remains with the individual. The participants’ related experiences reveal the importance of speaker agency and manifest the potential of workplace environments to engender more positive orientations toward Spanish as well as active use of the language during adulthood.
circ-IARS depletion inhibits the progression of non-small-cell lung cancer by circ-IARS/miR-1252-5p/HDGF ceRNA pathway
Authors: Yang Jinhua , Yang Chunping , Li Ping
Published: January 2023

This study aims to explore the role and mechanism of circ-IARS in non-small-cell lung cancer (NSCLC) progression. Expression of circ-IARS, microRNA (miR)-1252-5p, and hepatoma-derived growth factor (HDGF) was measured by real-time quantitative PCR and western blotting. The interactions among circ-IARS, miR-1252-5p, and HDGF were determined by dual-luciferase reporter assay and RNA immunoprecipitation. Cell behaviors were measured by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), 5-ethynyl-2′-deoxyuridine (EdU) assay, flow cytometry, scratch wound assay, and transwell assay, and validated in in vivo xenograft model. Exosomes were isolated using commercial kit, and the expression and functions of exosomal circ-IARS (exo-circ-IARS) were analyzed as described above. Results showed that the expression of circ-IARS was upregulated in NSCLC cells, NSCLC tissues, and serum exosomes from NSCLC patients. circ-IARS exhaustion antagonized cell proliferation, cell cycle progression, migration, and invasion and promoted apoptosis in NSCLC. Molecularly, circ-IARS could sponge miR-1252-5p to modulate the expression of the downstream gene HDGF. In addition, miR-1252-5p downregulation attenuated circ-IARS exhaustion-mediated effects in H1299 and A549 cells. MiR-1252-5p mimic-induced effects were relieved by increasing HDGF expression in H1299 and A549 cells. Exo-circ-IARS promoted H460 cell proliferation, migration, and invasion and inhibited cell apoptosis. Silencing circ-IARS retarded tumor growth of NSCLC cells in vivo. Thus, circ-IARS, secreted by exosomes, was a novel oncogene in NSCLC and regulated the malignant development of NSCLC cells via circ-IARS/miR-1252-5p/HDGF competing endogenous RNA regulatory axis.
Seeking understanding: categories of linguistic (non)belonging in interviews
Authors: Hippi Kaarina , Lehto Liisa-Maria
Published: January 2023

This paper discusses how persons of multicultural backgrounds describe in interviews their everyday experiences when using Finnish. The focus is on categories of linguistic (non)belonging described in interview interactions. The data consist of 23 single and pair interviews of 33 informants in total and come from two interview datasets. Data are analyzed discursively, taking into account positions and identities constructed in interviews. First, the study concentrates on descriptions where the informants’ interlocutors (particularly customer service persons) switched to English and the interviewees assumed reasons for it. Secondly, the recounted experiences where multiculturals have received comments on their Finnish language use are examined. According to the informants, language choices and evaluations arise from the perception of difference by the interactant. When language choice is discussed, categorizations of the informants as non-Finnish speakers arise. When the focus is on received comments, the informants discuss the categorizations of non-nativeness and origins. The informants position themselves in relation to these categories: They discuss the motivations and conditions for them. The study takes a closer look at how, in the interviews, there is space to criticize linguistic practices contrary to many everyday situations. The study brings to light the informants’ interpretations of switching language and commenting on one’s language as well as underlying ideologies of these situations, thereby also bringing about the possibility for change. The descriptions are multilevel, and we discuss how the categories of identification are constructed and how they are perceived in the interviews.
A universal metasurface transfer technique for heterogeneous integration
Authors: Zhang Xu , Cai Haogang , Daqiqeh Rezaei Soroosh , Rosenmann Daniel , Lopez Daniel
Published: January 2023

Metasurfaces offer a versatile platform for engineering the wavefront of light using nanostructures with subwavelength dimensions and hold great promise for dramatically miniaturizing conventional optical elements due to their small footprint and broad functionality. However, metasurfaces so far have been mainly demonstrated on bulky and planar substrates that are often orders of magnitude thicker than the metasurface itself. Conventional substrates not only nullify the reduced footprint advantage of metasurfaces, but also limit their application scenarios. The bulk substrate also determines the metasurface dielectric environment, with potentially undesired optical effects that undermine the optical performance. Here we develop a universal polymer-assisted transfer technique to tackle this challenge by decoupling the substrate employed on the fabrication of metasurfaces from that used for the target application. As an example, Huygens’ metasurfaces with 120 nm thickness in the visible range (532 nm) are demonstrated to be transferred onto a 100 nm thick freestanding SiN
x
membrane while maintaining excellent structural integrity and optical performance of diffraction-limited focusing. This transfer method not only enables the thinnest dielectric metalens to the best of our knowledge, but also opens up new opportunities in integrating cascaded and multilayer metasurfaces, as well as the heterogeneous integration with nonconventional substrates and various electronic/photonic devices.
Circularly symmetric nanopores in 3D femtosecond laser nanolithography with burst control and the role of energy dose
Authors: Paz-Buclatin Franzette , Esquivel-González Marcos , Casasnovas-Melián Alfredo , de Varona Omar , Cairós Carlos , Trujillo-Sevilla Juan Manuel , Kamada Kei , Yoshikawa Akira , Rodríguez-Ramos Jose Manuel , Martin Leopoldo Luis , Ródenas Airan
Published: January 2023

The fabrication of three-dimensional (3D) nanostructures within optical materials is currently a highly sought-after capability. Achieving nanoscale structuring of media within its inner volume in 3D and with free design flexibility, high accuracy and precision is a development yet to be demonstrated. In this work, a 3D laser nanolithography technique is developed which allows producing mm-long hollow nanopores inside solid-state laser crystals and with a high degree of control of pore cross-sectional aspect ratio and size. We report an in-depth study on the formation of pores both within the non-thermal regime at which temperature is fast dissipated after each laser pulse, and for a thermally controlled regime using pulse-bursts which facilitate the formation of pores with highly circular shapes down to 1.1. We demonstrate this process for a wide range of speeds, pulse repetition rates and pulse energies, thus opening the door to a much more useful nanofabrication technique for nanophotonics. Finally, we also report the change in index of refraction that is produced at the nanoscale obtaining a positive index contrast of ∼3%. The work therefore provides a promising path towards reliable 3D nanostructuring of solid-state laser media for the flexible fabrication of large and complex structures with features sizes from the nanoscale up to the mm-scale. Moreover, due to the embedded, seamless, and monolithic nature of this technology, and since YAG crystals can sustain temperatures of up to 1900 °C and are highly chemically inert and erosion resistant, we anticipate its direct application in harsh environments.
Enseñanza de las matemáticas en diseño gráfico para aprender visualización de datos y diseño de información
Authors: Luna-Gijón Gerardo , Ruiz-Morales Yaret Elsa
Published: January 2023

Mediante una serie de pruebas de diagnóstico, usando una metodología cualitativa a partir de la investigación-acción y los principios del Modelo Universitario Minerva (MUM), se implementaron estrategias de enseñanza en visualización de datos y diseño de información para fortalecer la práctica de estudiantes de diseño gráfico que están iniciando su formación. Este es un primer acercamiento para medir cómo abordar el proceso de enseñanza y generar un plan de acción a largo plazo. La evidencia indica que los estudiantes tuvieron dificultades en escoger el tipo de visualización adecuada para el problema que se les plantea, porque confunden la función de cada tipo de gráfico. Se concluye que el camino está en replantear los contenidos de la asignatura estudiada, enfocando la enseñanza en las propiedades y ventajas que cada tipo de gráfico ofrece, de manera que los estudiantes se apropien de los conceptos estadísticos y de visualización.
Cinema of Care
Authors: Nguyen Qui-Ha Hoang
Published: January 2023

Hải Ninh’s The Little Girl of Hà Nội (1974) captures the traumatic war causalities caused by the US B-52 bombing campaign in December 1972 through the memories of a child witness figure. While the US media typically portrayed Vietnamese children as helpless victims, and mainstream North Vietnamese media portrayed them as heroes, the film presents its child protagonist as both a victim and care agent within her community’s care network. The essay shows that Little Girl foregrounds the caring capability of a wounded community by using care as a structural force and a central aesthetic. I argue that Little Girl produces an aesthetics of care, including visual and sonic motifs to inscribe the tender tone that underscores the images of the damaged city. In this way, the film shows that care has the potential to reframe the narrative of war while avoiding the dominant frozen trope of traumatic memories.
Coyotaje, Corruption, and Border Enforcement in “Ambos Nogales” in the 1930s
Authors: Gutiérrez Laura D.
Published: January 2023

In the 1930s, agents from Mexico’s secret intelligence agency began to investigate reports of collusion between a Mexican coyote named Ramón Preciado, U.S. border agents, and U.S. government officials. Migrants and residents of Nogales, Sonora, accused the man of extorting migrants, sexually assaulting women, and reporting migrants to the Border Patrol. In turn, Border Patrol agents would deport those migrants who refused to pay bribes to Preciado. However, U.S. consular officials described him as a friend of the government, an advisor, and a trusted partner. This article uses this case to illustrate how corruption in migration agencies on both sides of the border allowed migrant smuggling to flourish as a profitable business in the twin border cities of Nogales, Sonora and Nogales, Arizona. Meanwhile, both U.S. officials and coyotes profited from the deportation of migrants, and the nascent Border Patrol used these inflated numbers to champion the success of its agents in guarding the border.
The Drosophila mitotic spindle orientation machinery requires activation, not just localization
Authors: Neville Kathryn E , Finegan Tara M , Lowe Nicholas , Bellomio Philip M , Na Daxiang , Bergstralh Dan T
Published: January 2023

The orientation of the mitotic spindle at metaphase determines the placement of the daughter cells. Spindle orientation in animals typically relies on an evolutionarily conserved biological machine comprised of at least four proteins – called Pins, Gαi, Mud, and Dynein in flies – that exerts a pulling force on astral microtubules and reels the spindle into alignment. The canonical model for spindle orientation holds that the direction of pulling is determined by asymmetric placement of this machinery at the cell cortex. In most cell types, this placement is thought to be mediated by Pins, and a substantial body of literature is therefore devoted to identifying polarized cues that govern localized cortical enrichment of Pins. In this study we revisit the canonical model and find that it is incomplete. Spindle orientation in the Drosophila follicular epithelium and embryonic ectoderm requires not only Pins localization but also direct interaction between Pins and the multifunctional protein Discs large. This requirement can be over‐ridden by interaction with another Pins interacting protein, Inscuteable.
Penggunaan Media Augmented Reality dalam Pembelajaran Mengenal Bentuk Rupa Bumi
Authors: Alfitriani Nabila , Maula Wisheila Ayunisa , Hadiapurwa Angga
Published: January 2023

Seiring perkembangan zaman, media pembelajaran juga mengikuti perkembangan teknologi yang ada, mulai dari teknologi cetak, audio visual, komputer, sampai teknologi gabungan antara teknologi cetak dengan komputer. Saat ini media pembelajaran menggabungkan teknologi cetak dan komputer sehingga dapat diwujudkan dengan media teknologi Augmented Reality (AR). Augmented Reality (AR) adalah teknologi yang digunakan untuk merealisasikan dunia virtual ke dalam dunia nyata dalam satu waktu. Relief Bumi adalah bentuk rupa bumi atas tinggi rendahnya permukaan bumi. Relief Bumi terdiri dari relief daratan dan lautan. Media pembelajaran mengenal bentuk rupa bumi menggunakan Augmented Reality ini mampu merealisasikan dunia virtual ke dunia nyata, dapat mengubah objek-objek tersebut menjadi objek 3D, sehingga membuat metode pembelajaran tidak monoton dan siswa akan terpacu untuk mengetahuinya lebih lanjut, seperti mengetahui contoh landasan dan keterangan dari masing-masing bentuk rupa bumi.
LAS PINTURAS MURALES DE SANTO ASENSIO DE LOS CANTOS (LA RIOJA)
Authors: Sáenz Pascual Raquel
Published: January 2023

Se conservan pocas pinturas murales medievales en La Rioja, por lo que son especialmente valiosas, a pesar de que algunas de ellas no hayan llegado hasta nosotros completas ni en buenas condiciones. Es el caso de la ermita de Santo Asensio de los Cantos (Ojacastro), con un conjunto pictórico que se fecha en el primer tercio del s. XIII y se sitúa en el interior del ábside. En la actualidad se pueden contemplar las escenas de la Epifanía, la Última Cena y cuatro figuras de religiosos en los derrames de los vanos. La conservación del conjunto es fruto de destacados esfuerzos a lo largo del tiempo, conocidos gracias a las fuentes documentales. En el artículo se recoge información sobre algunas de estas acciones de conservación y se ofrece una lectura iconográfica de las pinturas en clave eucarística, acorde con la época en que fueron realizadas.
BACK TO PARADISE: EXPERIENCES WITH FANALES AS A TOOL FOR APPROACHING THE RENEWAL SPACE
Authors: Sanfuentes Olaya
Published: January 2023

This article aims to show the complex object of a fanal -a glass lantern where a sculpture of Baby Jesus surrounded by miniatures depicting nature dwells- as a three-dimensional representation of the hortus conclusus. The reflection and data provided, show this object as a garden to take care of and as a reminder of the search and mental pilgrimage to the renewal space.
Juan de Ortega Montañés, obispo y virrey de Nueva España y la Custodia de Siles (Jaén)
Authors: Moreno Partal Mercedes Inmaculada , Marchal Jiménez Ángel
Published: January 2023

Juan de Ortega Montañés (Siles, 1627 – Ciudad de México, 1708) fue obispo y virrey de Nueva España. En cada uno de sus destinos (Durango, Guatemala, Michoacán y México) desarrolló una extraordinaria labor como promotor de las artes, pero esto no quedó reducido a estos lugares, si no que en ningún momento se olvidó de su lugar de nacimiento y de su familia donde envió joyas y magníficas obras de plata, como la Custodia que se conserva en la Iglesia Parroquial de la Asunción de Nuestra Señora  de Siles encargada y enviada durante su segundo periodo como virrey y mientras portaba la mitra del Arzobispado de México.
Por fidelidad dinástica y política: los mayordomos de semana y gentilhombres en la corte de Fernando VII
Authors: Moral Roncal Antonio Manuel
Published: January 2023

A la hora de analizar la pervivencia o confluencia de elites viejas y nuevas en el siglo XIX, el estudio de la Real Casa y Patrimonio supone un buen laboratorio para contrastar hipótesis y avanzar en el conocimiento de los grupos sociales que intentaron alcanzar el poder político a través de su influencia sobre la Corona. En este artículo analizaremos los mayordomos de semana y los gentilhombres, sus funciones y el extracto socioprofesional de aquellos que aspiraron y lograron esos puestos.
Kenaf core and bast loading vs. properties of natural rubber latex foam (NRLF)
Authors: Kudori Siti Nurul Izzati , Ismail Hanafi , Shuib Raa Khimi
Published: January 2023

Natural rubber latex foam (NRLF) based on kenaf core and bast were prepared by using the Dunlop method. Mechanical properties, foam density, compression, hardness, thermal aging, and microstructural characteristics of kenaf-filled NRLF with different loadings of kenaf core and bast were analysed. The tensile strength, elongation at break, and compressive strength of kenaf bast filled NRLF samples decreased as the content of kenaf was increased. However, the modulus at 100%, hardness, and density of NRLF increased with increasing kenaf contents. The addition of kenaf core into NRLF increased the swelling percentage and aging of the foam compared to the bast. Scanning electron microscopy (SEM) results indicated that the fibrous kenaf bast had a stronger adhesion compared to the particulate kenaf core, resulting in higher tensile strength, elongation at break, and compression strength.
Stability and rheological behavior of nanocellulose-modified UF resin compositions
Authors: Hochmańska Patrycja , Janiszewska Dominika
Published: January 2023

The aim of this work was to investigate the influence of nanocellulose on the storage stability and rheological properties of urea formaldehyde (UF)-based adhesive compositions for wood-based panels. Three types of UF resins characterized by different F/U molar ratios were used for this research. Resin modifications with nanocrystalline cellulose and a nanofibrillated cellulose content of 1.0% to 5.0% by dry weight of resin were prepared. The flow curve characteristics and storage stability were studied. The viscosity values mainly depended upon the type of nanocellulose used, as well as its loading in the composition. The UF resins modified with nanocrystalline cellulose kept their rheological behavior and proper viscosity after 4 weeks in storage, which lowered the percentage of viscosity retention by approximately 1.5 times compared with that of industrial resins. Nanocrystalline cellulose might be used as a stabilizer in resin compositions during long-term storage, while nanofibrillated cellulose might act as a thickening agent through the limited extent of loading in a composition.
The distribution of poly-DADMAC additive in the inkjet coating layer and its influence on the print quality
Authors: Jang Jung Won , Lee Jee-Hong , Youn Hye Jung , Lee Hak Lae
Published: January 2023

Maximizing the functionality of cationic polydiallyldimethylammonium chloride (poly-DADMAC) additive with minimal dosage in inkjet coatings can contribute to both an improvement in quality and a cost reduction. To do this, it is essential to understand how the cationic additive is distributed in the coating layer and how it affects the print quality. This study presents a three-step investigation to enhance the understanding of the distribution of poly-DADMAC, as well as its effect on inkjet print quality. First, the adsorption behavior of poly-DADMAC on silica pigments was investigated by measuring the surface charge of silica and the adsorption of the cationic additive. Second, the influence of poly-DADMAC on the printability of binder films was investigated. Finally, the effect of poly-DADMAC on the print quality of inkjet paper was examined. The addition of poly-DADMAC improved the print quality of the inkjet paper because of the improved holdout of the negatively charged colorants in the ink.
Pediatrics: pharmacokinetics and dose calculation
Authors: Bereda  Gudisa
Published: January 2023

The pediatrics has various pharmacodynamic, physiological and pharmacokinetic properties as well as growth rate in comparison with adults. Gastric pH is neutral at birth but falls to pH 1-3 within twenty four to forty eight hours after birth. At birth, the blood-brain barrier is still not fully mature and medicinal products perhaps obtain access to the central nervous system with sequence toxicity. Plasma protein attaching of compounds is dependent on the amount of present attaching proteins, the number of available binding sites, the affinity constant of the medicine for the protein(s), and the availability of pathophysiological conditions or endogenous compounds that perhaps change the medicine-protein attaching interaction. Total body water, explained as percentage of body weight, reduces with age, from comparatively 80% in newborns to 60% by 1 year of age. Reversibly, body fat accelerates with age, from one percent to two percent in a preterm neonate to ten percent to fifteen percent in a term neonate and 20 to 25% in a 1-year-old. First-pass metabolism of zidovudine was decrease in the first 14 days of life. At birth, renal blood flow is only 5 to 6% of cardiac output, 15 to 25% by one year of age and reaches adult values after two years of age. Children's dosage depends on factors such as their age and weight, their health status, their respiratory system, and the stage of development of their body systems for drugs metabolism (e.g., liver enzymes) and elimination (e.g., kidneys). Young’s rule can be applied quickly approach a situation in which the patients weight is unknown; this rule cannot be used for newborns and consideration must be made for growth variability in growth at any given age. A young’s rule for calculating the dose of medicine correct for a child by adding twelve to the child’s age, dividing the sum by the child’s age, then dividing the adult dose by the figure obtained, as it expressed beneath: (age in years / age (years) + 12)) × adult dose.
Stress in child care and pediatrics postgraduate residents during the covid-19 pandemic. University of Carabobo - Venezuela
Authors: Calcurian Yuraima García , Robersi C Avila Teran , Agüero Irma
Published: January 2023

Introduction: Health personnel seem to be the category most exposed to the psychological challenges of a new normality due to the Covid-19 pandemic, facing the risk of contracting the virus or infecting others, generating various psychic responses that can be reflected in stress or anxiety. The Objective: Evaluate the level of stress in relation to anxiety disorders through the application of the DSM-IV diagnostic criteria in the Postgraduate Residents of Childcare and Pediatrics. Materials and Methods: Quantitative study, evaluative type of cross-sectional with a sample represented by 56 residents of postgraduate childcare and pediatrics, whose data were obtained through the application of a multiple choice questionnaire according to DSM-IV criteria. Results: 66.07% presented symptoms of moderate stress or phobic disorders. The largest number of cases for this category is found in first year residents with an affectation of 68.97%. Conclusions: According to DSM-IV, resident physicians present with symptoms of moderate stress.
educação em direitos humanos no ensino superior brasileiro
Authors: Dibbern Thais Aparecida , Serafim Milena Pavan
Published: January 2023

Este artigo tem como objetivo apresentar um panorama sobre os fundamentos teóricos e normativos da Educação em Direitos Humanos (EDH) no âmbito do ensino superior, atribuindo especial destaque ao processo constitutivo desta prática educativa no contexto brasileiro. Para tanto, buscou-se compreender o contexto pelo qual as Instituições de Ensino Superior (IES) estão inseridas – em especial as universidades públicas –, bem como a fundamentação teórica acerca da EDH presente na literatura acadêmica e nos principais instrumentos e normativas brasileiras. Como resultados principais, é possível destacar o seguinte: (a) a EDH, enquanto prática educativa recente, atrela-se à perspectiva de que o compromisso social a ser assumido pelas universidades públicas consiste na produção de pesquisa básica e na formação de conhecimentos críticos; (b) esta prática, por ser parte essencial do conjunto de direitos fundamentais, tem como intuito prevenir violações e informar e fazer conhecer os direitos pelos quais somos sujeitos; (c) no ensino superior, a EDH está positivada, principalmente, no Plano Nacional de EDH, bem como nas diretrizes nacionais para a EDH, se constituindo enquanto um eixo de atuação pelo qual as universidades brasileiras são demandadas a atuar.
All I do is win, no matter what? What matters in gaining electoral support from televised debates
Authors: Waldvogel Thomas , König Pascal-D. , Wagschal Uwe
Published: January 2023

How much do the performances of top candidates in televised debates affect vote intentions in parliamentary democracies? The article addresses this question and disentangles the effects of predisposition and performance in televised debate reception. Drawing on a large-N field study of the 2017 chancellor duel in Germany, which contains survey and real-time response data for 5660 participants, we identify debate-induced determinants of shifts in voting intention and assess their relative effect sizes on such changes. Our analysis shows, first, that out-party identification is an effective barrier against shifts in voting intentions. However, we find that viewers’ real-time performance perceptions of the candidates show strong effects. Third, we demonstrate that these real-time evaluations can breach the predisposition’s barrier particularly when the intensity of out-party identification is less than very strong. Fourth, we find verdicts on the debate winner as an additional short-term factor that can foster shifts in voting intentions in the course of debate reception. Overall, our results indicate that pre-dispositions may hinder rational updating of electoral behaviour but that debate performance can actually make a difference by altering the formation of voting intentions.
Online prosumer convergence: Listening, creating and sharing music on YouTube and TikTok
Authors: Vizcaíno-Verdú Arantxa , De-Casas-Moreno Patricia , Tirocchi Simona
Published: January 2023

Social media and prosumers have encouraged participatory creativity in the era of platformization. In this context, successful platforms such as YouTube and TikTok have facilitated users interact with music content in a wide variety of meaningful and evocative videos. In the light of research on the cultural prosumption of Internet content, as well as the global exchange of musical data, which is leading an emerging and innovative digital convergence, this study analyses the intersection between digital music and users through the Music Prosumer Questionnaire (MuPQ). This tool consists of three dimensions and 21 items based on (a) music preferences, (b) use of social media, and (c) music engagement. For this purpose, we collected the response of 698 users from Spain and Italy. The results showed that digital and visual music is essential to users’ life as a means of expression and relationship with other people. In particular, in their role as music curator, are more interested in “music watching” than in blind listening, which is related to mainstream music viewing dynamics. These findings provide new insights for understanding how music evolves according to the relationship between users and social media beyond technological progress.
News website users in Mexico: factors influencing their loyalty
Authors: Dávila-Garza Horacio , Alarcón-Martínez Gustavo-Juan , López-Pérez Jesús-Fabián
Published: January 2023

Recent technological advances have significantly impacted news media in the way they provide news to the public, evolving into a digital environment. Therefore, digital media today focuses on generating readers’ loyalty to their news websites. In this sense, a multiple linear regression analysis was carried out on a sample of 344 surveys of adult residents in the cities of Mexico and Monterrey. The results show that factors such as familiarity, satisfaction and reputation are positively related to the loyalty of news website users. However, they also show that the importance of the impact of these factors is different when the analysis is carried out in a stratified manner, such as residence, gender or education, which allows us to conclude that digital media can guide their loyalty efforts depending on the profile of their readers and the market they seek to target. To illustrate focusing on stratification by place of residence, the most significant factors for the Mexico City group corresponded to familiarity and satisfaction, wile for the Monterrey group the most significant factors were reputation and familiarity in that order. Results with this type of differences between groups were also obtained when comparing by gender and schooling. It is recommended for future research on the subject, to include other cities within the country, with the purpose of contrasting these paper’s findings.
IMPROVING THE PROPERTIES OF NICKEL-BASED SUPERALLOYS OF DIRECTED CRYSTALLIZATION BY OPTIMIZING THE CHEMICAL COMPOSITION
Authors: Ol’shanetskii V. , Glotka O. , Greshta V. , Khvostak V.
Published: January 2023

Purpose. It consists in establishing the influence of the chemical composition on the type, chemical composition and morphology of the primary carbides of the nickel-based superalloy, which allows to increase the operational properties of the parts through the structure of the carbide component.

Research methods. Process modeling was carried out using the CALPHAD method. The initial data were the chemical compositions of model alloys with different concentrations of carbide-forming elements. The result of the calculation was the chemical composition of the carbides released in the corresponding systems. The experimental values were processed by statistical methods to obtain correlation dependencies of the “parameter-property” type and establish mathematical equations of regression models that optimally describe these dependencies.

Results. The regularities of the effect of metal chemical composition on the morphology of carbides of MC type have been established. It is shown that depending on chemical elements introduced in the system, the basis of carbides can change, which causes a change in their shape and an increase in the crack resistance of the material. It is shown that the obtained dependences are closely correlated with metallographic studies of alloys of this class.

Scientific novelty. The dependences of the influence of the chemical composition variation of the multicomponent system Ni-Cr-Co-Al-W-Re-Ta-Mo-Nb-C on the chemical composition and morphology of carbides have been established. This makes it possible to change the basis of the carbides, their composition and morphology, thereby improving the mechanical properties of the material, especially fatigue and heat-resistant characteristics.

Practical value. An effective solution for establishing the structural-phase state of nickel-based superalloys by optimizing their chemical composition is proposed, which made it possible to improve the operational properties of the material. The established dependencies can be used in the optimization of the composition of industrial cast nickel-based superalloys and in the development of new compositions.
DIE STEEL 4Х4Н5М4Ф2 (WITHOUT FORGING TREATMENT) FOR HOT DEFORMATION OF ALUMINUM ALLOY
Authors: Sydorchuk О.
Published: January 2023

Purpose. Production of steel with controlled austenitic transformation during operation of the 4Х4Н5М4Ф2 grade (without forging treatment) using the technology of electroslag remelting and establishing optimal modes of heat treatment (annealing, quenching and tempering). Production of tools (matrices) from 4Х4Н5М4Ф2 steel (without forging treatment) for hot deformation of aluminum alloy at operating temperatures below the critical point A1.

Research methods. Metallographic analysis of experimental die steels 4Х4Н5М4Ф2 (without forging treatment) and forged 4Х5МФ1С: study of metal structure; determination of specific resistance; determination of tensile strength; determination of hardness and impact strength.

Results. The results of research on the optimization of heat treatment modes (quenching and tempering) of 4Х4Н5М4Ф2 steel (without forging treatment) are given. Adjusted chemical composition (4Х4Н5М4Ф2) and optimized mode of heat treatment of steel, which allowed to increase heat resistance up to a temperature of 650 °С. The tempering temperature of steel (475±25 °С) at which irreversible temper brittleness occurs is established. Experimental and industrial tests of steel 4Х4Н5М4Ф2 (without forging treatment) for hot deformation of AK7ч aluminum alloy are presented. It is shown that compared to forged steel H13 (an analogue of 4Х5МФ1С), which is used at one of the Chinese enterprises, the experimental steel has practically the same resistance .

Scientific novelty. In the process of partial recrystallization (incomplete annealing at a temperature of 750±20 °C) of 4Х4Н5М4Ф2 steel (without forging treatment), a spheroidized carbide component is formed, which leads to an improvement in the mechanical processing of the workpiece for the manufacture of matrices.

Practical value. The possibility of using steel with an adjustable austenitic transformation during operation of the 4Х4Н5М4Ф2 grade (without forging treatment) is shown for a wide range of operating temperatures of hot deformation: copper-nickel (at an operating temperature above the critical point A3) and aluminum alloy (at an operating temperature below the critical point A1) with increased service life compared to forged steel 4Х5МФ1С.
The Significance of the Black Sea in Turko-Soviet Relations in 1939-1946
Authors: Olszowska Karolina Wanda
Published: January 2023

The Black Sea and the Black Sea Straits during World War II and immediately after its end had a huge impact on the formation of Turkish-Soviet relations. Already at the beginning of the war, Moscow tried to force Ankara to revise the Montreux Treaty. Soviet pressure depended on the war situation and resurfaced as the Allies began winning the war. In 1945, Turkey, fearing a lack of support in the event of a conflict with the Soviet Union, was ready to make concessions, and in the following year Moscow began to boldly demand a revision of the Montreux Treaty in its notes in such a way that the straits would be decided by the Black Sea states, and the security guards Turkey and the Soviet Union were to become the Bosphorus and the Dardanelles. Ankara could only have been saved by Western support during this period - and in the longer context by the outbreak of the Cold War.