bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fronteras Brasil y Perú, espacio de integración y cooperación
Authors: Laurente Itala , Filippi Eduardo Ernesto 
Published: November 2021

Las fronteras son espacios donde se condensan las relaciones entre la población local y los diferentes niveles de gobierno, sea nacional o subnacional. Por eso, es relevante la creación de áreas fronterizas de paz y desarrollo sustentable, con base en la cohesión regional, integración social y territorialidad, lo que contribuye a la disminución de las tensiones entre los países y consolida los procesos de integración y cooperación continua. Particularmente, las fronteras de Brasil y Perú tienen una relevancia estratégica a razón de la biodiversidad, ubicación geográfica, presencia de lagos y ríos y porque es un espacio para el desarrollo económico de las fronteras. El motivo para desarrollar este artículo es, a razón de que en Brasil y Perú se desenvuelve una serie de dinámicas fronterizas sean territoriales, sociales, comerciales y económicas.El artículo tiene por objetivo analizar las regiones limítrofes entre Perú y Brasil como un espacio con características distintivas, lo que coadyuva a determinar posibles acciones futuras en la integración fronteriza. El estudio es descriptivo, de abordaje cualitativo basado en la revisión documental y cuantitativa de fuentes de secundarias. Se concluye en la necesidad de usar estrategias políticas, económicas, sociales pensadas de abajo-arriba que incorpore a diferentes actores multinivel, así como fortalecer los proyectos ya existentes que permitan la fluidez del comercio y mercado de productos tanto peruanos como brasileños a través de las fronteras, finalmente, reforzar la integración y cooperación entre fronteras para combatir actividades ilícitas y el mejoramiento del desarrollo de esas regiones.
O caráter anticolonial da luta contra o racismo no Brasil
Authors: De Castro Susana 
Published: November 2021

O texto pretende analisar o impacto da escravidão colonial no Brasil para as relações sociais nos dias de hoje. O objetivo do texto é refletir porque no Brasil, ao contrário do que ocorreu, por exemplo, na Alemanha após o regime nazista, não ter sido fomentado um sentimento de vergonha, que levasse a culpa e reparação pelo genocídio da população indígena e negra. Minha hipótese é a de que a naturalização e a normalização desses fatos contribuem para a permanência da colonialidade do poder, isto é, de uma distribuição desigual do poder baseada em uma hierarquia entre as raças, e seus efeitos, os racismos estrutural, institucional e cotidiano no Brasil. O/a brasileiro/a tem a ‘branquitude’ como meta e despreza suas origens não europeias. Essa colonização do imaginário conduz a nossa subordinação intelectual e política. Enquanto a população não for capaz de enfrentar o trauma do escravismo, e entender que precisa exigir das autoridades políticas e elites econômicas reparação pelos danos e sofrimentos causados, continuaremos seguindo um ethos colonial, reproduzindo padrões sociais raciais eurocêntricos.
Estética chicha: nuevas formas de creatividad popular en Lima de inicios del siglo XXI
Authors: Quispe Lázaro Arturo 
Published: November 2021

En Lima, nuevas formas de creación artística que provienen del ámbito popular se han venido produciendo desde inicios del siglo XXI. Estas creaciones, que proceden del entorno de la música tropical peruana, se conocen como música chicha. Un primer paso significativo fue el cambio de diseño y composición del afiche chicha: pasó de publicitar fiestas de música tropical hacia otro que transmitía ideas. De ese modo, se conectó con otros espacios de lo popular y de la ciudad, deviniendo una diversidad de propuestas creativas a los que se les denominó estética chicha. ¿Por qué en una ciudad como Lima, cosmopolita, altamente interconectada y globalizada emerge y genera impacto una producción artístico-cultural de corte popular y del entorno de la música tropical chicha? ¿Qué características tiene esta estética y qué relación establece con la cultura ancestral en un contexto altamente interconectado?.Estas son algunas de las preguntas que abordaremos en este artículo, focalizado en Lima, durante las dos primeras décadas del presente siglo. La metodología es inductiva: hemos seleccionado un corpus pictórico de las creaciones existentes. Finalmente, planteamos una taxonomía que nos permitió analizar la estética chicha como expresión artística contemporánea.
The Contribution of Sex Difference on Different Liver Histopathology Between Male and Female Mice After Oral Administration of Caffeine
Authors: Muhammad Sholikhuddin Nafi’  , Tri Hartini Yuliawati  , Prijati Sri Irawati  , Hasanatuludhhiyah Nurina 
Published: November 2021

Background: There are several studies reporting the effect of caffeine on liver histopathology, but it remains controversy. The laboratory animal used in those studies were predominantly male, whereas there is contribution of sex difference on different liver reaction to xenobiotic between male and female subject.
Objective: It is necessary to conduct a study to explore the differences between the liver histopathology of male and female mice after oral administration of caffeine.
Methods: This study used 36 mice (Mus musculus) that were divided into 4 groups: male & female untreated groups and male & female treated groups which were orally administered with caffeine 0.4 mg / 20 gramBW daily for 30 days. At the end of treatment, mice were euthanized and dissected. Histopathological examination was done to determine the percentage of liver cell death of each group.
Results: The percentage of liver cell deathin female treated group was higher than male treated group (p = 0.0001). But there was no significant difference of liver cells death between male control and treated group and between female control and treated group.
Conclusion: There was significant difference in liver histopathology between male and female mice after oral administration of caffeine.
PENGARUH MOTIVASI DAN STRES KERJA TERHADAP KINERJA DENGAN KETERLIBATAN KERJA SEBAGAI VARIABEL INTERVENING ( STUDI PADA KARYAWAN BAGIAN PRODUKSI ) PT. FITRAFOOD INTERNATIONAL
Authors: Darwin Darrylia Jennyfer 
Published: November 2021

Tujuan dari penelitian ini adalah untuk mengetahui adanya pengaruh motivasi dan stress kerja terhadap kinerja dengan keterlibatan kerja sebagai variable intervening (studi pada karyawan bagian produksi) PT. Fitra Food International yang berjumlah 102 orang. Metode pengumpulan data yang digunakan dalam penelitian ini membaca literature- literature dan penelitian sebelumnya dan penyebaran kuesioner. Data yang dianalisis dari hasil tersebut diolah dengan path analisis. Pengujian validitas dilakukan dengan bantuan SPSS 16.0 for windows dan model pengukuran yang diperoleh dari pengolahan data menggunakan AMOS yang menunjukkan hasil penelitian menunjukkan bahwa variable motivasi kerja berpengaruh signifikan terhadap keterlibatan kerja, kemudian variable stress kerja berpengaruh signifikan terhadap keterlibatan kerja, lalu variable keterlibatan kerja berpengaruh signifikan terhadap kinerja karyawan, kemudian variable motivasi kerja berpengaruh signifikan terhadap kinerja karyawan dan variable stress kerja berpengaruh signifikan kinerja karyawan. Kata kunci: motivasi, stress kerja, kinerja, keterlibatan kerja
The role of Applied Higher Education in achieving the SDGs: The Example from the Faculty of Vocational Studies at Universitas Airlangga
Authors: Kristanto Damar , Soleh Mochammad , Suharno Novianto Edi , Aji Gagas Gayuh 
Published: November 2021

Abstractthe whole world has been made aware of the importance of sustaining human life on this earth. The economic improvement felt in the last decade is the result of increasing industrialization around the world. This has a fairly serious impact in terms of natural damage and social life. Fundamental changes are urgently needed to break the chain of socio-environmental damage that threatens the survival of future generations. These fundamental changes can be started from changes in the concept of education. Education is still considered the key to development both in terms of human resources and innovation. Applied education can be a door in the teaching of new abilities and skills based on the SDGs. This study aims to describe the role of applied or vocational education in achieving SGDs. The Faculty of Vocational Studies at Universitas Airlangga can be an example of how applied higher education institutions have the potential to achieve the SDGs goals. Based on the results of our study, it appears that the role of applied educational institutions has the potential to achieve the SDGs targets. The results of this study have a significant impact on future policy directions and institutional development. Keywords: SDGs, higher education institution, sustainable development, thematic analysis.
MIDIATIZAÇÃO: AÇÃO OU EFEITO DE MIDIATIZAR
Authors: De Mendonça Melo Angelina 
Published: November 2021

Por meio da introdução teórica sobre o tema, percebe-se que o ato ou efeito de midiatizar, encontra-se na contextualização da cultura pós-moderna, de lógicas e operações de natureza midiática e que se inscrevem na vida da sociedade, permeando e constituindo suas formas de organização e funcionamento, definindo condições de acesso e consumo por parte dos indivíduos, sendo a partir deste consumo, os variados segmentos para determinados públicos. Com tantas especificações sobre mídia, estudar esse fenômeno é algo atraente e desafiador, pois envolve toda uma sistemática de ideias, ainda em processo de desenvolvimento infinito, já bem conceituada, por autores que abordam e abordaram o tema no decorrer de décadas por todo o mundo, alguns deles trazidos aqui neste artigo. Portanto, os estudos sobre a Midiatizaçãoé importante, por despertar aguçados sentimentos de descobertas e por sua tamanha utilidade social e pública na contemporaneidade, também pelo poder de persuasão, por intermédio da força discursiva e pela capacidade de construir variados entendimentos sobre a realidade no cotidiano.
Deep Directional Electromagnetic Technique Improves Well-Drilling Efficiency
Authors: Carpenter Chris 
Published: November 2021

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 202265, “Leap of Faith From Conventional to EM Look-Ahead: A Game-Changing Technology To Improve Well Efficiency,” by Muhamad Yanuar Mahardi, Hendarsyah Hendarsyah, and Kharisma Endarmoyo, PT Pertamina, et al., prepared for the 2020 SPE Asia Pacific Oil and Gas Conference and Exhibition, originally scheduled to be held in Perth, Australia, 20–22 October. The paper has not been peer reviewed.
The structure in the Matindok block in Central Sulawesi operated by Pertamina has proven producible gas reserves in the Minahaki formation. One of the main challenges in this area is the low resolution of seismic data, leading to a high depth uncertainty. The complete paper describes a technology developed to meet these challenges with the capability to map and detect lithology changes ahead of the bit in real time.

Geological Background
A first exploration well, PEP-001, was drilled in 2018. The structure has a Miocene carbonate buildup play, and the target reservoir is the M pinnacle carbonate reef. The PEP-001 well was planned to set the 9⅝-in. casing point above the top of the M formation. Offset wells did not show any clear markers in the thick shale above the M formation that could have been used for log correlation. In previously drilled offset wells, correlation was performed convention-ally by examination of cutting samples and on drilling breaks. However, when Well PEP-001 was drilled, no apparent drilling break was observed. By the time cuttings reached the surface, the bit had drilled into 20 m of the M formation. Because the casing covered most of the upper carbonate formation, openhole logging and well-testing data were not acquired to delineate the target formation optimally.
The second exploration well, PEP-002, was planned with an objective of setting 9⅝-in. casing approximately 5 m above the top of M to acquire full-interval coverage of coring, openhole wireline logging, and well testing. This information was critical for optimal reservoir delineation to allow for accurate reserves calculation and future development.
Conventional correlation methods have proven insufficient for casing point placement. The presence of limestone stringers in offset wells within proximity of the top of M presented an additional challenge. The stringers could have been misinterpreted as the main carbonate body, if interpretation were based solely on cutting samples.

Real-Time Electromagnetic (EM) Look-Ahead Technology
Optimize Performance Through Customization of Paraffin Inhibitor Molecular Structure
Authors: Gawas Kiran , Khandekar Chandrashekhar , Akita Katrina , Ngo Janet , Hazlewood John 
Published: November 2021

Abstract
Deposition of high molecular weight paraffins and subsequent plugging is one of the most prevalent flow assurance risks in both onshore and offshore oil and gas production. Several thermal (e.g., insulation, heat treatment), mechanical (e.g., pigging, cutting), and chemical (e.g., paraffin crystal modifiers, dispersants, and solvents) techniques are used for wax deposition prevention and remediation. Various chemistries such as long-chain poly alkyl acrylates, olefin vinyl acetate copolymers, alkyl phenol resins and esterified olefin maleic anhydride polymers are used as wax crystal modifiers. This study investigates the impact of the alpha olefin maleic anhydride co-polymers structure on the composition and deposition of paraffin. Eight different crude samples from condensates to black oils with API gravity in the range of 30 to 50° were studied.
The focus of this research is on paraffin inhibitors’ effectiveness in reducing paraffin deposition that is driven by thermal driving force between the bulk oil and the pipe wall. Inhibitor performance was measured by cold finger testing. Three different alpha olefin (short, medium and long) maleic anhydrides esterified with different fatty alcohols with varying chain lengths were tested for performance. The impact of selected chemicals on amount and composition of paraffin deposit under different test conditions was studied. Wax deposit composition was characterized using high temperature gas chromatography (HTGC) and differential scanning calorimetry (DSC) techniques.
Effect of pendant side chain length as well as the composition and molecular weight of the alpha-olefin backbone on paraffin inhibition is presented. Additionally, the impact of test conditions on the composition and hence the performance of the selected chemicals is investigated. We present our findings on selective inhibition of lower molecular weight paraffin depending on the composition of the oil, leaving a much harder deposit rich in high molecular weight paraffin. This is an important observation since a hard deposit would be extremely difficult to remediate in the field and should be avoided.
In summary this work provides guidelines for tailoring paraffin inhibitor molecules based on crude oil composition and field conditions, through a systematic structure-performance study.
Combined Control Mechanism of Weight on Bit and Rate of Penetration with a Downhole Robot in the Coiled-Tubing Drilling Process
Authors: Zhao Jianguo , Han Shuo , Liu Qingyou , Zhang Ying , Xiao Xiaohua , Dong Run , Fang Shiji , Tu Chi 
Published: November 2021

Summary
Downhole robots were used to solve the problem of downhole tool transportation in an oil/gas horizontal well. However, current downhole robots do not control the weight on bit (WOB) and rate of penetration (ROP). This paper proposes the combined control method of WOB and ROP using an electric proportional overflow valve (EPOV) and an electric proportional throttle valve (EPTV). First, the mathematical model of the electrohydraulic control of the downhole robot is established. It is found that when the maximum pressure of the EPOV is greater than the differential pressure between the inner and outer of the downhole robot, the control parameters are drilling-fluid displacement and circulation area of the EPTV. When the maximum pressure of the EPOV is less than the differential pressure between the inner and outer of the downhole robot, the control parameters are drilling-fluid displacement, circulation area of the EPTV, and pressure of the EPOV. Moreover, it is found that the relationship of WOB and ROP in the combined control method is a surface rather than a line in a 2D coordinate. Therefore, the downhole robot can be adjusted while drilling at a stable ROP or a stable WOB. Finally, the combined control method of WOB and ROP with the downhole robot proposed in this paper was verified with an experiment. According to the experimental data, it is further found that an EPOV cannot only control WOB and ROP, but also can control the upper limit of WOB fluctuation. Thus, the control of WOB fluctuation can protect the bit from damage and prolong the life of the bit. This paper presents a foundation for the control of WOB and ROP with downhole robots. It has scientific and engineering significance for promoting downhole robots in drilling engineering.
Optimization and Ev a Luation of Viral Metagenomic Amplification and Sequencing Methods Toward a Genome -le Vel Resolution of the Human Fecal DNA Virome
Authors: Wang Guangyang , Li Shenghui , Yan Qiulong , Guo Ruochun , Zhang Yue , Chen Fang , Tian Xiangge , Lv Qingbo , Jin Hao , Ma Xiaochi , Ma Yufang 
Published: November 2021

Abstract
Background: Viruses in the human gut have been linked to health and disease. Deciphering of the gut virome is dependent on metagenomic sequencing of the virus-like particles purified from the fecal specimens. A major limitation of conventional viral metagenomic sequencing is the low recoverability of viral genomes from the metagenomic dataset. Results: Herein, we developed an optimal method for viral amplification and metagenomic sequencing to maximize the recovery of viral genomes. Using 5 fecal specimens with multiple repetitions, we revealed the optimal number of PCR cycles of high-fidelity enzyme-based amplification and the reliability of multiple displacement amplification in virome DNA preparation, verified the reproducibility of the optimally whole viral metagenomic experimental process, and tested the capability of long-read sequencing for improving viral metagenomic assembly. Based on our optimized results, we generated 151 high-quality viruses using the data combined from short-read (15 cycles for PCR amplification) and long-read sequencing. Genomic analysis of these viruses found that most (60.3%) of them were previously unknown and showed a remarkable diversity of viral functions, especially the existence of 206 viral auxiliary metabolic genes. Finally, we compared the viral metagenomic and bulk metagenomic sequencing approaches and revealed significant differences in the efficiency and coverage of viral identification between them. Conclusions: Our study demonstrates the potential of optimized experiment and sequencing strategies in uncovering viral genomes from fecal specimens, which will facilitate future research about genome-level characterization of complex viral communities.
A note on two-sided removal and cancellation properties associated with Hermitian matrix
Authors: Tian Yongge 
Published: November 2021

Abstract
A complex square matrix A is said to be Hermitian if A = A∗, the conjugate transpose of A. We prove that each of the two triple matrix product equalities AA∗A = A∗AA∗ and A3 = AA∗A implies that A is Hermitian by means of decompositions and determinants of matrices, which are named as two-sided removal and cancellation laws associated with a Hermitian matrix. We also present several general removal and cancellation laws as the extensions of the preceding two facts about Hermitian matrix.AMS classifications: 15A24, 15B57
MicroRNA-141-3p Attenuates Oxidative Stress-induced Hepatic Ischemia Reperfusion Injury via Keap1/Nrf2 Pathway
Authors: Li Tingting , Chen Qingsong , Dai Jiangwen , Huang Zuotian , Luo Yunhai , Mou Tong , Pu Junliang , Yang Hang , Wei Xufu , Wu Zhongjun 
Published: November 2021

Abstract
Hepatic ischemia reperfusion injury (IRI) is a major factor affecting the prognosis of liver transplantation through a series of severe cell death and inflammatory responses. MicroRNA-141-3p (miR-141-3p) has been reported to be associated with hepatic steatosis and other liver diseases. However, the potential role of miR-141-3p in hepatic IRI is currently unknown. In the present study, we found that miR-141-3p levels were negatively correlated with alanine aminotransferase (ALT)/aspartate aminotransferase (AST) in liver transplantation patients. The results demonstrated that miR-141-3p was decreased in mouse liver tissue after hepatic IRI in mice and in hepatocytes after hypoxia/reoxygenation (H/R). Overexpression of miR-141-3p directly decreased Kelch-like ECH-associated protein 1 (Keap1) levels and attenuated cell apoptosis in vivo and in vitro, while inhibition of miR-141-3p facilitated apoptosis. Further experiments revealed that overexpression of miR-141-3p also attenuated oxidative stress-induced damage in hepatocytes under H/R conditions. Taken together, our results indicate that miR-141-3p plays a major role in hepatic IRI through the Keap1 signaling pathway, and the present study suggests that miR-141-3p might have a protective effect on hepatic IRI to some extent.
CT radiomics for predicting PD-L1 expression on tumor cells in gastric cancer
Authors: Xu Mengying , Qiao Xiangmei , Liu Song , Li Zhengliang , Ji Changfeng , Li Hui , Shi Tingting , Li Lin , Gu Qing , Zhou Kefeng , Zhou Zhengyang 
Published: November 2021

Abstract
Purpose To explore CT radiomics for predicting programmed cell death ligand 1 on tumor cells (PD-L1) status in gastric cancer (GC).Methods From March 2019 to July 2020, 358 patients identified with GC who underwent surgery at our hospital were enrolled in this study retrospectively. All patients were divided into primary (n=239) and validation (n=119) cohorts based on the time of surgery at a ratio of 3:1. Radiomic features were extracted from regions of interest manually drawn on venous CT images. Besides, preoperative tumor markers of all patients were collected and analyzed. The signatures based on radiomics were built using Support Vector Machine (SVM) and Random Forest (RF). Receiver operating characteristic (ROC) curve was performed to assess diagnostic efficiency. Decision curve analysis confirmed the clinical utility.Results Numerous radiomic features (all p<0.05) differed significantly between GCs with different PD-L1 status. The model developed by SVM algorithm in the primary and validation cohort achieved better performance with AUCs of 0.704 and 0.799, respectively.Conclusion It was promising to predict PD-L1 status in GCs noninvasively using CT radiomics. It might help to improve clinical decision making with regard to immunotherapy.
Stability Analysis for Linear Uncertain Switched Systems in Infinite-time Domain
Authors: Shu Yadong , Li Bo 
Published: November 2021

Abstract
In this work, an uncertain switched system expressed as a series of uncertain differential equations is considered in depth. Stability issues have been widely investigated on switched systems while few results related to stability analysis for uncertain switched systems can be found. Due to such fact, three different stabilities, including stability in measure, almost sure stability and stability in mean, are comprehensively studied for linear uncertain switched systems in infinite-time domain. Internal property of the systems is able to be illustrated from different perspectives with the help of above stability analysis. By employing uncertainty theory and the feature of switched systems, corresponding judgement theorems of these stabilities are proposed and verified. An example with respect to stability in measure is provided to display the validness of the results derived.