bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reconstrucción del discurso social sobre la desigualdad en Costa Rica, 2006-2014
Authors: Carballo Chaves Pablo 
Published: July 2024

Este artículo ofrece una reflexión sobre la desigualdad social en Costa Rica desde la categoría del discurso social, a partir de una estrategia metodológica cualitativa. Desde esta categoría se reconstruye, a partir de grupos narrativos (la élite de gobierno, la oposición parlamentaria y los sindicatos), para comprender cómo se ha conceptualizado la desigualdad social en función de sus interacciones. El análisis se centra en cuatro períodos de gobierno entre 2006 y el 2022, durante los cuales el Partido Liberación Nacional y el Partido Acción Ciudadana se han alternado en el poder. En esta primera parte del estudio se considera el periodo de 2006-2014. Entre las conclusiones más importantes se encuentra el papel de la desigualdad social en la creación de un clima de injusticia que ha permitido que surjan nuevas elites de gobierno y nuevos líderes sociales, entre los que ha aparecido un liderazgo conservador religioso reclamando presencia sociopolítica.
Emerging magnetic materials for electric vehicle drive motors
Authors: Rom Christopher L. , Smaha Rebecca W. , O’Donnell Shaun , Dugu Sita , Bauers Sage R. 
Published: July 2024

AbstractIncreasing demand for electric vehicles (EVs) is increasing demand for the permanent magnets that drive their motors, as approximately 80% of modern EV drivetrains rely on high-performance permanent magnets to convert electricity into torque. In turn, these high-performance permanent magnets rely on rare earth elements for their magnetic properties. These elements are “critical” (i.e., at risk of limiting the growth of renewable energy technologies such as EVs), which motivates an exploration for alternative materials. In this article, we overview the relevant fundamentals of permanent magnets, describe commercialized and emerging materials, and add perspective on future areas of research. Currently, the leading magnetic material for EV motors is Nd2Fe14B, with samarium-cobalt compounds (SmCo5 and Sm2Co17) providing the only high-performing commercialized alternative. Emerging materials that address criticality concerns include Sm2Fe17N3, Fe16N2, and the L10 structure of FeNi, which use lower cost elements that produce similar magnetic properties. However, these temperature-sensitive materials are incompatible with current metallurgical processing techniques. We provide perspective on how advances in low-temperature synthesis and processing science could unlock new classes of high-performing magnetic materials for a paradigm shift beyond rare earth-based magnets. In doing so, we explore the question: What magnetic materials will drive future EVs?
Graphical abstract
Washback Effect Assessment of Mahārah Istimā' using Google Form
Authors: Rahmawati Rahmawati , Zakiyah Zaimatuz , Sitompul Julkhaidir 
Published: July 2024

Assessment has specific effects on learning, both positive and negative effects. In this case, assessment should encourage the implementation of better learning. This survey research aims to analyze the positive and negative effects of the mahārah istimā’ assessment using Google Forms or what is also called the washback effect. The respondents in this research were 43 PAI I FTK UIN Imam Bonjol Padang students. In this regard, data was collected through observation techniques, questionnaires, and interviews. As a primary data collection technique, the questionnaire covers three aspects: exam preparation strategies, learning attitudes, and learning materials. Then, the collected data was analyzed using descriptive statistics. The research results show that the total scores for each aspect are 37.4, 3.8, and 3.89, respectively. In other words, these aspects are included in the "excellent" category. Thus, based on these three aspects, the mahārah istimā’ assessment using Google Forms positively impacts learning. This research contributes practically to the experience of the mahārah istimā’ test using Google Forms. For future research, explore longitudinal effects, compare assessment methods, and study the sustainability of positive impacts. Also, analyze educators' perspectives and use qualitative data for deeper insights into assessment dynamics and student learning experiences, refining mahārah istimā’ assessment on digital platforms like Google Forms
A comparative study of functional outcome of percutaneous kirschner wire fixation versus philos plating of proximal humerus fractures
Authors: Bhosale Akshay , Agrawal Mayur , Pimpale Tushar 
Published: July 2024

: Proximal humerus fractures, accounting for approximately 5% of all fractures, pose a significant challenge in orthopedic management due to their complex anatomy and diverse fracture patterns. Treatment options range from conservative methods to various surgical interventions, each with its pros and cons. This study specifically compares two commonly employed surgical techniques: Open reduction & internal fixation with PHILOS plate and percutaneous k-wire fixation with/without external clamps. This study aims to address the effectiveness of each technique by evaluating functional outcomes using validated scoring systems like the Constant-Murley Score. To assess the functional outcomes of two surgical treatment methods (K-wire application and PHILOS plate fixation) for proximal humerus fractures. : A randomized prospective study was conducted on patients coming to the Orthopaedics outpatient department or casualty of tertiary care hospital for a duration of 1 year from Dec 2022 to Nov 2023. A total of 18 patients were included in the study. The mean Constant- Murley Score (CMS) was 81 +/- 6.13 for the PHILOS plating group and 76.88 +/- 7.37 for the K-wire treated group with a p-value of 0.08. The results for CMS were excellent in 22.2% of patients and good in 66.7% of patients in PHILOS treated group and excellent for 11.11%, good for 66.67% and satisfactory for 22.2% in the K-wire treated group. Both groups achieved satisfactory functional outcomes with CM Score at the final follow-up. Both techniques achieved favorable outcomes, with a majority of patients in both groups (88.89% for PHILOS and 77.78% for K-wire) achieving good to excellent results based on the CMS scores.
Możliwości występowania naturalnych złóż wodoru w warunkach polskich
Authors: Matyasik Irena ,   Instytut Nafty i Gazu – Państwowy Instytut Badawczy, Ciechanowska Maria ,   Instytut Nafty i Gazu – Państwowy Instytut Badawczy
Published: July 2024

W artykule przedstawiono wodór naturalny jako potencjalne bezemisyjne źródło energii odnawialnej, która w transformacji energetycznej całej gospodarki ma do odegrania niezwykle ważną rolę. Omówiono drogi migracji i akumulacji wodorowych. Podano przykłady występowania wodoru w różnych typach środowiska naturalnego i w różnych strukturach litologiczno-stratygraficznych, także na obszarach oceanicznych i w strefach występowania podwyższonej aktywności wulkanicznej. Przedstawiono źródła pochodzenia wodoru naturalnego, z których za najważniejsze przyjmuje się proces serpentynizacji, typowy dla skał ultrazasadowych bogatych w żelazo. Obecnie uważa się, że proces ten może generować aż 80% wodoru występującego na Ziemi. Innym procesem uczestniczącym w produkcji wodoru jest radioliza, zachodząca w skałach zawierających pierwiastki promieniotwórcze (m.in. U, Th), emitujące promieniowanie jonizujące i powodujące rozszczepianie cząstek wody. W czasie tej reakcji uwalniany jest wodór. Zaprezentowano wybrane prace badawcze prowadzone w Polsce na przestrzeni lat, w których zwrócono uwagę na obecność wodoru w gazach ziemnych związanych ze złożami węglowodorów czy ze złożami rud metali. Przeanalizowano 160 wyników badań składu gazów z otworów wiertniczych zlokalizowanych w rejonie północno-zachodniej Polski. Można zauważyć bardzo zmienne zawartości wodoru w tych próbkach. Jego zdecydowanie wyższe stężenia obserwuje się w utworach czerwonego spągowca, zaś znacznie niższe w utworach karbonu, dewonu i kambru. Obecność wodoru jest związana nie tylko z litostratygrafią, ale także z budową tektoniczną danego obszaru. Przedstawiono kierunki prac badawczo-rozwojowych, które powinny być choć w części prowadzone na etapie wstępnej oceny możliwości występowania pułapek wodorowych i określenia ich potencjału.
Increasing Emotional Distress and Use of Health Services among Hospitality Industry Workers During and After the COVID-19 Lockdown
Authors: Kim Pearl C. , Cochran Christopher , Bai Billy , Bhandari Neeraj , Khan Bethany , Keyoung Estella Sky , Shen Jay J. 
Published: July 2024

Objective
To examine the emotional distress situation among hospitality industry workers and their access to and use of health care including telehealth services during the COVID-19 pandemic.

Methods
A survey was administered on the Qualtrics platform both in English and Spanish from November 18, 2020, to November 30, 2020, through the Culinary Workers Union in Nevada. A total of 1182 union members participated in the survey, of whom 892 completed the survey. Descriptive and multivariable regression analyses were conducted.

Results
Among 892 respondents, 78% were people of color; 71% were laid off or furloughed during the COVID-related shutdown, but most had access to health care. Further, 78.8% experienced at least 2 or more signs of emotional distress during the pandemic. Females and unemployment status were positively associated with experiencing emotional distress. About 43.5% received care through telehealth, although most did not prefer telehealth (74.2%). Only 18.3% of non-telehealth users were interested in telehealth and 15.0% had never heard about telehealth.

Conclusions
Health insurance coverage is essential for access to health services regardless of employment status. Strengthening mental health services, including psychological counselling for hospitality workers, is needed in such public health emergency situations as the ongoing COVID-19 pandemic.
Два века Летописа Матице српске (1824–2024)
Authors: Ђилас Гордана 
Published: July 2024

Летопис Матице српске је најстарији српски живи часопис који ове, 2024. године, обележава 200 година излажења. Основао га је новосадски професор Георгије Магарашевић (1793–1830). Издавање Летописа након треће свеске преузима Матица српска. Рад се бави прегледом основних програмских оријентација Летописа током смене бројних уредника, од којих су најзапаженији Георгије Магарашевић, Теодор Павловић, Јован Суботић, Јован Ђорђевић, Тихомир Остојић, Марко Малетин и Младен Лесковац. Од оснивања и широког програма Георгија Магарашевића, који је предвидео да буде часопис који се тиче целог словенског, а нарочито српског народа, мењао је концепцију, условљен друштвеним, политичким и идеолошким разлозима, све време стремећи да постане српски књижевни научни часопис. Иако је то делимично постигнуто тек у периоду након Другог светског рата, а у потпуности распадом Социјалистичке Федеративне Републике Југославије, његова дуготрајност обавезује на неговање традиције и додатна истраживања његовог утицаја у савременом тренутку.
Pengembangan Teknologi Supercritical Geothermal: Potensi dan Strategi untuk Energi Bersih dan Berkelanjutan
Authors: Dian Pertiwi Permata , Riska Laksmita Sari  , Fauji Islami Phasya  
Published: July 2024

Development of supercritical geothermal technology is a complex and challenging process that requires significant investment in research, technology development, and collaboration. However, the potential benefits of this technology include low carbon footprint, high efficiency, and the potential to provide reliable electricity, making it an important focus area for the future of clean energy production. This study is qualitative and uses literature study methods involving data collection and analysis from various literature sources, including scientific journals, books, and reports. The literature study was conducted by searching and collecting several relevant and accurate sources such as scientific journals, books, and official publications on the topic. Data collection was carried out by analyzing the content of each available source. The supercritical geothermal well drilling method can generate electricity of 3-5 MW per well. Several successful energy development projects include exploration well drilling in Mexico, Italy, Iceland, USA, Kenya, and Japan. Supercritical energy development technology is also continuously being developed, such as closed-loop and CO2 utilization. The development of supercritical geothermal technology is a complex and challenging process that requires significant investment in research, technology development, and collaboration. However, the potential benefits of this technology include low carbon footprint, high efficiency, and the potential to provide reliable electricity, making it an important focus area for the future of clean energy production.

Keywords: energy; geothermal; supercritical; technology; development; efficiency
ANALISIS PERBANDINGAN PRODUKSI SEBELUM DAN SETELAH WELLSERVICE PADA SUMUR X LAPANGAN Y PT PERTAMINA EP
Authors: Yehuda Eric Christian  , Laksmita Sari Riska 
Published: July 2024

Well X started production on February 9th, 2012 with oil production of 217 BOPD and peak production on March 1th, 2012 with oil production of 2756 BOPD. As production progresses, the reservoir pressure will decrease resulting in a decrease in the production rate. Well X was shut-in on March 7th, 2023 with oil production of 197 BOPD and watercut reaching 91.27%. The location of this study is administratively located in Campurejo Village, Bojonegoro District, Bojonegoro Regency. Analysis of well potential and well forecasting are carried out by the Wiggins method. This method was chosen because the X well has a three-phase fluid and a high water cut. The calculation results show a maximum flow rate of 4111.52 BFPD and an optimum flow rate of 2466.91 BFPD. After calculating the optimum flow rate, and to avoid water cloning, it is recommended that wells be produced with a production flow rate of 2412.54 BFPD at a well base flow pressure (Pwf) of 1368 Psi.
Keyword: well service; IPR; future IPR
Penentuan Nilai Porositas pada Sample Berea di Routine Core Analysis Laboratorium BBPMGB “LEMIGAS”
Authors: Febriyana Marine Chyntya , Welayaturromadhona  
Published: July 2024

This study aims to analyze routine cores, especially for determining the porosity of a rock. The samples tested by the coreval tool were 3 samples of 1.5 inch diameter with a length of 4.5 cm each. The sample used is a sample of Berea sandstone. When the core sample comes, it is continued with ct-scan and spectral gamma ray. The next process is washing the fluid in the core sample. After cleaning from other fluids, the core sample will be dried in the oven. After it is completely dry, the sample must be stored in a desiccator containing silica gel. After ambient temperature, then the core sample is tested using Coreval 700. The data inputted into the coreval computer are the name of the core sample, the dry weight of the core, the length of the core, and the diameter of the core. The coreval tool takes readings of bulk volume, pore volume, and porosity. This reading resulted in bulk volume values of 50.091 cc; 53.446 cc; and 52.410 cc, respectively. The pore volume value of each sample is 12.091 cc; 13.787 cc; and 13.385 cc. As for porosity, the value of each sample is 25.767%; 25.795%; and 25.540%.
Keywords: coreval 700; permeability; porosity, RCAL
Integración productiva y comercial de México en las cadenas globales de valor
Authors: Pérez-Santillán Lesbia , Arriaga Navarrete Rosalinda 
Published: July 2024

En este trabajo se analizan las características de la integración productiva y comercial de México en 1995-2018. Se ofrece un marco para entender cómo se integran los sectores de la economía mexicana a las cadenas globales de valor (CGV). Se aplica la metodología desarrollada por Wang, Wei, Yu y Zhu (2017a y 2017b) a las matrices de insumo-producto interregionales de la Organización para la Cooperación y el Desarrollo Económicos (ocde), y con ello se responde a dos cuestiones: 1) ¿qué porcentaje de factores de producción empleados en los sectores de México ha estado involucrado en actividades de producción segmentada o CGV entre países?, y 2) ¿qué porcentaje de productos finales manufacturados por los sectores mexicanos proviene de actividades de CGV? Los resultados indican que en los sectores de la economía mexicana prevalecen índices de participación de vínculos hacia atrás (mayor participación de insumos intermedios importados) en comparación con sus respectivos índices de participación de vínculos hacia adelante (insumos del país en las exportaciones y la producción de terceros países). Además, los resultados indican que cualquier diseño de políticas tendientes al impulso de ciertas actividades debe considerar que, de manera global, prevalece una mayor integración a las CGV de los países y sus sectores, independientemente de su nivel de desarrollo. Este hecho puede limitar las opciones de mayor encadenamiento de las actividades relacionadas a las CGV con las actividades domésticas.
Sul Global em luta antirracista: abrindo caminhos digitais para a erradicação do racismo na educação superior
Authors: Silva Jenipher Alyssa de Lima , Barbosa Ana Patricia Marcos , Böschemeier Ana Gretel Echazú , Melo Rute Régis de , Santos Taízia Tassia dos , Carvalho Breno da Silva , Paixão Ezequiel Adney Lima da , Gomes Peti Mama , Greco Lucrecia Raquel , Broguet Julia 
Published: July 2024

A finalidade deste artigo é discutir, de forma integrada, ações escolhidas pela sua significatividade, selecionadas a partir das propostas de ações de dois ciclos da ação voltada para a eliminação do Racismo no Ensino Superior, no âmbito da campanha coordenada pela Cátedra UNESCO Educação Superior, Povos Indígenas e Afrodescendentes na América Latina/UNTREF nos períodos de setembro a dezembro de 2020 (primeiro ciclo) e de outubro a dezembro de 2021 (segundo ciclo). Durante o primeiro ciclo foram abordadas diversas ações inter-institucionais em uma rede que envolveu países como Brasil, Guiné Bissau e Argentina. Todas as ações foram tangenciadas pela discussão antirracista em perspectiva decolonizadora, internacional, intercultural e plurilíngue. Durante o segundo ciclo, o foco esteve na luta antirracista vinculada à comunidade Surda do estado do Rio Grande do Norte, no Brasil. Refletimos sobre a importância de tecermos pontes críticas na construção de reflexões sobre o racismo que sejam capazes de evidenciar os outros aspectos do pertencimento identitário em perspectiva interseccional - deficiências, gênero, nação, dentre outras.
Profile of HIV/AIDS Patients with Neurological Manifestations in The Tertiary Referral Hospital in Bali
Authors: Suryapraba Anak Agung Ayu , Vania Aurelia , Sudewi Anak Agung Raka , Sukmawati Ni Made Dewi Dian , Susilawathi Ni Made 
Published: July 2024

Background: Neurological manifestations in approximately half of Human Immunodeficiency Virus/Acquired Immunodeficiency Syndrome (HIV/AIDS) patients are related to high morbidity and mortality worldwide. Therefore, there is a need for epidemiological data on HIV/AIDS patients with neurological manifestations in Bali, as an international tourism destination.
Objective: This study aimed to describe the clinical profile of neurological manifestations among patients with HIV/AIDS in the tertiary referral hospital for Bali and Nusa Tenggara region.
Methods: A descriptive-retrospective study was conducted on HIV/AIDS patients presenting with neurological manifestations hospitalized in the Neurology Department of Prof. Dr. I.G.N.G Ngoerah Hospital Denpasar from January 2018 to December 2021.
Results: Among the 227 subjects included in this study, the majority were male (69.9%) and HIV positive newly diagnosed (69.2%). Furthermore, out of 126 subjects who had CD4 data, the majority were with CD4 <200 cells/mm3 (85.7%) and 53.1% were <50 cells/mm3, with ages ranging from 18 to 67 years old, at a median of 36 years old. The most common neurological signs and symptoms found were paresis/paralysis (61.7%), headache (54.6%), decreased consciousness (52.9%), and cranial nerve palsy (52%). Cerebral toxoplasmosis (67.4%) and tuberculous meningoencephalitis (20.3%) were the prevalent opportunistic infections, while the mortality rate was 39.6% with sepsis as the major cause.
Conclusions: Neurological manifestations are common initial symptoms in diagnosing HIV infection. Therefore, better awareness and earlier detection are required among people with risk factors of HIV transmission, particularly in groups of young and productive age with signs of immunocompromised condition as well as neurological manifestations.
Mammalian Ste20-Like Kinase 1 Regulates AMPK to Mitigate the Progression of Non-Alcoholic Fatty Liver Disease
Authors: Yang Yi , Wang Lijuan , Zhang Chenglei , Ma Jie , Li Jiarui , Wu Yuanyuan , Ren Yanru , Li Jianning , Li Yan 
Published: July 2024

Abstract

Non-alcoholic steatohepatitis (NASH) escalates adverse liver-related outcomes, with its progression linked to hepatic lipotoxicity induced by excess hepatic free cholesterol (FC) MST1 has been identified as a potential regulator of hepatic lipid metabolism, potentially ameliorating NAFLD. This study aims to delineate the role of MST1 in the progression of NASH. Wild-type (WT) and MST1 gene knockout (MST1 KO) mice were induced into NASH using a high-fat, high-sugar, high-cholesterol Western diet (WD). In vivo overexpression of MST1 was conducted using lentivirus in WD-fed WT mice. In vitro, HepG2 cells were subjected to MST1 knockdown and overexpression treatments, cultured in a medium induced by a mixture of palmitic acid and oleic acid as free fatty acids (FFA). The NASH model activates the hepatic cholesterol synthesis pathway, leading to an overload of hepatic free cholesterol and downregulation of MST1 expression. Knocking out MST1 exacerbates hepatic FC accumulation and inflammatory damage, activating the cholesterol synthesis pathway. Conversely, upregulating MST1 expression improves hepatic FC deposition, alleviating hepatic damage and inflammation. We found that AMPKα is a substrate of MST1, and MST1 can phosphorylate AMPKα at Thr172. Phosphorylation of AMPKα at Thr172 inhibits the cholesterol synthesis pathway, significantly reversing hepatic FC overload and inflammation caused by MST1 deficiency. Further mechanistic studies indicate that MST1 inhibits cholesterol synthesis by targeting the AMPK/SREBP2 pathway, thereby improving hepatic inflammatory damage caused by FC overload. MST1 targeting AMPK in regulating hepatic cholesterol synthesis metabolism serves as an attractive therapeutic target for preventing the progression of NASH-associated inflammation and fibrosis.