bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Ni/tire rubber carbon as catalyst in the hydrodeoxygenation of used vegetable oil: biofuel evaluation in the reduction of atmospheric emissions
Authors: Sánchez-Olmos Luis A. , Sánchez-Cárdenas Manuel , Trejo Fernando , Kamaraj Sathish-Kumar , Hernández Guerrero Benito Alexis , Montes Rivera Martín 
Published: September 2024

Abstract
The sustainable valorization of discarded resources remains a challenge, and their requirements are crucial for long-term development. In this sense, we characterize biofuels of the diesel range obtained with used vegetable oils subjected to hydrodeoxygenation with Ni supported on tire rubber carbon obtained by the pyrolysis of waste tires. Under optimal reaction conditions, the vegetable oil conversion was 81.2 % with a selectivity of 82.3 % to C10–C18 alkanes, which is supported by the results of the catalyst characterization. A vertical direct injection engine was used to compare the behavior of the renewable biofuel and petroleum diesel blends. In comparison to petroleum diesel, the blends with renewable biofuel showed minimal power loss. In addition, the use of blends containing biofuels allowed a reduction of 25 % of CO and HC, as well as a decrease of 48 % is smoke compared to petroleum diesel, due to the fact that renewable biofuels improved evaporation after injection, reduced the density, and did not contain aromatic components.
Efficacy and safety of 2-drug regime dolutegravir/lamivudine in pregnancy and breastfeeding – clinical implications and perspectives
Authors: Rohr Irena , Hoeltzenbein Maria , Weizsäcker Katharina , Weber Christoph , Feiterna-Sperling Cornelia , Metz Charlotte K. 
Published: September 2024

Abstract

Objectives
To assess the efficacy and safety of a two-drug regimen (2DR) with dolutegravir (DTG) and lamivudine (3TC) in maintaining viral suppression during pregnancy and breastfeeding, and to evaluate its potential as an alternative to the recommended three-drug regimen (3DR) in preventing mother-to-child transmission (MTCT) of HIV.

Methods
We present a case of a 34-year-old pregnant woman who, after discontinuing 3DR due to side effects and poor adherence, was switched to DTG/3TC at gestational week 23. Maternal viral load (VL) and infant HIV status were monitored throughout pregnancy and a ten-month breastfeeding period. Data on pharmacokinetic changes in pregnancy and the risks associated with 2DR were reviewed.

Results
The patient’s VL remained suppressed (<20 copies/mL) from gestational week 23 until the end of the breastfeeding period. A healthy HIV-negative baby was born at 39 weeks, and the child remained HIV-negative after ten months of breastfeeding. The 2DR was well-tolerated, improved adherence, and reduced fetal drug exposure. Despite limited experience with 2DR in pregnancy, no viral rebound occurred, and no adverse effects were observed.

Conclusions
Although 3DR remains the preferred therapy during pregnancy and breastfeeding, this case indicates that DTG/3TC may be an effective alternative for patients experiencing intolerance or poor adherence to 3DR. Further studies are needed to explore the impact of pharmacokinetic changes in pregnancy on 2DR efficacy and to confirm its safety and role in preventing MTCT.
Reliability of two-dimensional steady magnetized Jeffery fluid over shrinking sheet with chemical effect
Authors: Almheidat Maalee , Zeeshan  , Althobaiti Ali , Iqbal Naveed , Mahnashi Ali M. , Shah Rasool 
Published: September 2024

Abstract
A numerical framework is established for a two-dimensional steady flow of the magnetized Jeffery fluid model over elongated/shrinking sheets, with potential applications such as coating sheets, food products, fiber optics, drilling fluids, and the manufacturing processes of thermoplastic polymers. The model also demonstrates the influence of chemical reaction, magnetic field, and stability analysis which provide a novel contribution to this study. To ensure the ease and effectiveness of this analysis, we transform the set of difference equations governing the system into ordinary equations using the similarity transformation. The reliability of the solution is examined by using stability analysis. The Navier–Stokes equations have been transformed into self-similar equations by adopting appropriate similarity transformations and subsequently solved numerically using the bvp4c (three-stage Labatto-three-A formula) approach. The comparison between the derived asymptotic solutions and previously documented numerical results is quite remarkable. The self-similar equations display a duality of solutions within a limited range of the shrinking parameter, as observed from the data. For each stretching scenario, there is a unique solution. Hence, an examination of temporal stability has been conducted through linear analysis to establish the most fundamentally viable solution. The determination of stability in the analysis is based on the sign of the smallest eigenvalue, which indicates whether a solution is unstable or stable. The analysis of stability reveals that the first solution, which describes the primary flow, remains stable. Through the utilization of graphs, we thoroughly examine and discuss the influence of emerging factors. The numerical results obtained from this analysis demonstrate multiple solutions within a certain range of

M

1

≥

M

ci

{M}_{1}\ge {M}_{{ci}}

,

i
=
1
,
2
,
3

i=1,2,3

, and no solution in the range

M

1

<

M

ci

{M}_{1}\lt {M}_{{ci}}

.

M

ci

{M}_{{ci}}

denotes the critical values, which increase as the quantities of

Sc

{\rm{Sc}}

increase from 0.3 to 0.9. Similarly, multiple solutions exist for

λ
≥

λ

ci

\lambda \ge {\lambda }_{{ci}}

,

i
=
1
,
2
,
3

i=1,2,3

, and no solution in the range

λ
<

λ

ci

\lambda \lt {\lambda }_{{ci}}

is observed.
Parental Preferences and Shared Decision-Making for the Management of Febrile Young Infants
Authors: Sylvestre Philippe , Aronson Paul L. , Yannopoulos Alexandra , Poirier Cassandra , Gaucher Nathalie , Burstein Brett 
Published: September 2024

OBJECTIVE
To inform shared decision-making by identifying parental preferences for the management of their febrile young infant.

METHODS
This was a sequential explanatory mixed-methods study using a cross-sectional questionnaire (May 2020–May 2022) followed by qualitative focus groups (September–December 2022) with parents of infants aged ≤60 days evaluated for fever at a tertiary pediatric hospital. Parental expectations, stressors, and desired level of decisional involvement were assessed using multiple-choice and 6-point-Likert scales. Questionnaire results informed the qualitative naturalistic inquiry into parents’ decision-making experiences and preferences regarding the need for lumbar puncture (LP) and hospitalization.

RESULTS
Among 432 parents (64.9% response), few anticipated the need for LP (10.2%) or hospitalization (20.8%), and these were selected as the most stressful aspects of management. No parent identified lack of decisional involvement as the most important stressor, although nearly all (97.5%) wanted to be involved in management decisions. Six focus groups with a subset of 17 parents revealed 4 main themes: (1) varying preferences for decisional involvement depending on the strength of the medical recommendation; (2) importance of involving parents in their infant’s medical care; (3) need for tailored information; and (4) importance of supportive relationships. Parents reported feeling involved in discussions about their infant’s care but that decisions regarding LP and hospitalization were usually made by the medical team.

CONCLUSIONS
Parents of febrile young infants identified LP and hospitalization as the most unexpected and stressful aspects of care. Understanding individual family expectations and tailoring information based on the strength of medical recommendation is necessary to guide shared decision-making.
Práticas de gestão da diversidade em uma empresa multinacional do setor de papel e celulose
Authors: Maia Lícia Serpa , Leopoldino Cláudio Bezerra 
Published: September 2024

Contextualização: Empresas com diversidade limitada apresentam um desempenho mais fraco em comparação com organizações inclusivas alinhadas com os princípios ESG (Ambientais, Sociais e de Governação), embora esta correlação possa não se aplicar universalmente. Apesar destes esforços, algumas ações relacionadas com a diversidade foram inadequadas, incompletas, produziram resultados desfavoráveis ​​ou revelaram-se ineficazes.
Objetivo: O presente estudo tem como objetivo analisar as práticas e ações adotadas na gestão da diversidade de uma multinacional do setor de Celulose e Papel.
Método: A pesquisa utiliza metodologia qualitativa e descritiva. Também apresenta um estudo de caso. O método de coleta de dados empregado foi um roteiro de entrevista semiestruturado. Foram entrevistados cinco funcionários ativamente engajados na implementação das iniciativas de diversidade e inclusão da empresa como embaixadores, todos representando grupos minoritários.
Resultados: A empresa conduziu diversas iniciativas para promover a diversidade e a inclusão, abrangendo práticas de não discriminação, apoio e medidas de responsabilização. A maioria dessas iniciativas foi considerada bem-sucedida pelos entrevistados. O estudo destacou os benefícios e desafios associados às práticas de gestão da diversidade, indicando progressos em direção às metas estabelecidas. Simultaneamente, certas práticas impactaram a vida pessoal dos participantes, enquanto fatores externos também influenciaram os resultados e desafios enfrentados.
Conclusões: As práticas identificadas, juntamente dos benefícios e desafios relatados, contribuem para a gestão da diversidade e alinham-se com a literatura existente, ao mesmo tempo que refletem os aspectos únicos da empresa em análise, suscitando mais investigação e potenciais pesquisas futuras.
Compreensão sobre custo e formação de preço: A percepção de mulheres empreendedoras
Authors: Santos José Glauber Cavalcante dos , Alves Thífane Teixeira 
Published: September 2024

Contextualização: Em qualquer variedade de negócio, os aspectos conhecimento prévio, planejamento, organização e estratégias apropriadas são considerados determinantes para o crescimento. Em negócios femininos, isso se torna ainda mais importante, porque as mulheres enfrentam em seus empreendimentos desafios adicionais frente aos homens.
Objetivo: O objetivo da pesquisa é entender a percepção sobre a concepção de custo e a adoção das estratégias de precificação sob a ótica de mulheres empreendedoras. Não são encontradas na literatura estudos que assumam essas problemáticas conjugadas.
Método: Classifica-se o estudo como exploratório-descritivo, com abordagem qualitativa e multicaso. Neste estudo, foram indagadas 14 mulheres empreendedoras no município de Fortaleza/CE. Foram realizadas entrevistas estruturadas e aplicada a técnica de análise de conteúdo categorial para tratamento das manifestações das entrevistadas após o processo de transcrição das falas.
Resultados: Há compreensão restrita sobre o que é a definição de custo, independente da formação escolar, mas próxima ao mainstream contábil. A precificação tem custo e mercado como antecedentes. Embora enumerem barreiras de gênero, as entrevistadas não notam ou reconhecem essas dificuldades. A pesquisa indica áreas e atuações que as políticas de formação profissional para mulheres podem se concentrar. Além disso, o estudo ressalta restrições sociais que impedem o desenvolvimento profissional feminino, já que muitas das pesquisadas não percebem tais barreiras.
Conclusões: Conclui-se que as mulheres enfrentam dificuldades específicas para conduzir e desenvolver negócios, o que impõe aos seus empreendimentos desvantagem competitiva e aumento da chance de insucesso e desistência. Apesar disso, os resultados mostram que, com o incentivo adequado, mulheres empreendedoras podem aperfeiçoar e consolidar seu conhecimento prático sobre o estabelecimento do custo de produtos/serviços e aprimorar as estratégias de precificação apreendidas, muitas vezes, por meio da vivência prática. Isso reduziria a distância social entre homens e mulheres no campo do empreendedorismo.
Vozes da ancestralidade: Caminhos interseccionais percorridos por mulheres indígenas na gestão organizacional
Authors: Gonçalves Ana Carolina Yanaguibashi , Silva Jaqueline Ferreira da , Santana Aleff dos Santos , Silva Adriana Rodrigues , Tavares Juliette de Castro 
Published: September 2024

Contextualização: Desde o momento em que os colonizadores chegaram ao Brasil, as mulheres indígenas têm sido alvo de discriminação e violência de várias formas, principalmente por conta de preconceitos de gênero e etnia. Assim, mesmo após mais de 500 anos de luta por um lugar de acolhimento, esforço para preservar suas origens e garantir a subsistência de seu povo, essas mulheres ainda não ocupam os espaços de destaque social e organizacional que merecem.
Objetivo: O presente artigo tem como objetivo compreender os caminhos interseccionais percorridos por mulheres indígenas na gestão organizacional. No que tange aos "caminhos interseccionais", este estudo reconhece como as identidades sobrepostas de gênero e etnia podem moldar de maneira única as experiências de mulheres indígenas, influenciando suas jornadas desde a formação acadêmica até o alcance de cargos de liderança.
Método: Trata-se de um estudo qualitativo que utilizou o método do relato oral. A coleta de dados ocorreu por meio de entrevistas semiestruturadas com a participação de quatro gestoras indígenas atuantes na região amazônica.
Resultados: Os relatos obtidos evidenciaram as violências causadas pela interação dos marcadores sociais de gênero e etnia nas vidas pessoais e profissionais das entrevistadas, desde a saída de suas comunidades para estudar nas cidades, durante a permanência na universidade, até a ocupação de cargos gerenciais.
Conclusões: Esta pesquisa contribui para a teoria interseccional ao abordar o gênero e a etnia em um contexto pouco explorado pela literatura - mulheres indígenas em cargos de liderança - e avança na compreensão da diversidade nas organizações. Além disso, contribui para a reflexão sobre a necessidade de desenvolvimento de políticas de diversidade e inclusão e de melhorar as práticas de gestão organizacional.
Evolving MPD with Human Factors Approach
Authors: Sales I. M. , Nazareth V. R. 
Published: September 2024

Abstract
MPD technique has been successfully used to enable drilling in harsh environments. Despite the benefits, it is still seen with some skepticism in scenarios where it is not mandatory. In part due to the MPD failures observed and the added complexity of MPD application, when compared to conventional operations.
During the evolution of the technique, with increased complexity and more challenging scenarios, a great effort has been applied to develop better training and competency of the teams, since many failures can be directly linked to human error.
However, a better look should be given to the technique with a Human Factor approach. Can we really expect human not to failure in a challenging scenario with a complex technique? Although great effort was made in building competency, human error still continues.
Training plays an important role on the MPD, but other aspects should be considered, such as: communication, responsibility for the task, suitability of the procedure to the task, among others. Therefore, it is crucial to consider other contributing factors like organizational (and industry), technological and environmental.
This paper presents human errors collected from more than 100 wells drilled in deepwater and proposes a complementary interpretation of the raw causes with focus on human factors, beyond the need for training. It shows that human errors are often the sign of organizational or technological issues and proposes methods to mitigate them.
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100+ Deepwater MPD Wells Learnings
Authors: Fernandes A. A. , Vanni G. S. F. , Terra F. S. 
Published: September 2024

Abstract
MPD offshore in deepwater is less than 20 years old. Over the last decade there was noticeable evolution of usage of MPD technology. The industry acceptance of what is considered the correct application of the technology has evolved over the years. The first barrier concept and well control practices now consider the capability and characteristics of MPD technology. This allowed the undrillable wells to be drilled with almost no penalty when compared to a conventional well intervention. The operational awareness improved, due to new capabilities of MPD techniques, leading to an improvement on the overall efficiency of the intervention.
The sustained use with better understanding of the benefits of the technology lead to more refined applications of MPD, while reducing the added operational time. New applications also were developed using existing equipment, widening the deployment extent of MPD during well construction and maintenance.
Still, major discussions are needed to further develop the technology on deepwater scenarios. Completion and workover are still not discussed in depth in the industry and operational concepts between different disciplines must align considering MPD advantages and limitations.
This paper presents key aspects of the evolution of MPD application based on the experience of drilling more than 100 wells using MPD on deepwater scenarios. Regarding the MPD evolution, a revision of the internal and external operations, through several papers and publications allows the identification of different factors that changed over the years.
MPD Deepwater Drilling: A Case Study of MPD Surface Back Pressure Implementation for a Sidetrack Exploration Well in the Gulf of Mexico
Authors: Luis R. A. Gonzalez , Happoff R. , Meyer E. , Hampshire K. , Taques A. , Scott N. , Duong L. , Barker I. 
Published: September 2024

Abstract
Managed Pressure Drilling (MPD) was identified as the differentiating technology to successfully execute a sidetrack deepwater exploration prospect in the Gulf of Mexico. Conventional drilling efforts were suspended on the original hole due to multiple pressure management issues, such as losses, ballooning, and wellbore instability. MPD was selected as an enabler for overcoming these challenges. The sidetrack was planned to exit the existing 14-inch casing and run three additional strings of casing/liners to a planned total depth (TD) over 31,000 ft MD. MPD was strategically integrated to address operational hurdles and acquire valuable subsurface data. MPD enabled the liners' shoe to be set deeper in two sections than the original wellbore, increasing the probability of reaching well TD. Given the well's exploratory nature and lack of offset information, a statically underbalanced mud was used, giving maximum flexibility to manage and test the pressure profile. MPD techniques for real-time pressure estimation were successfully used to obtain critical reservoir information.
This paper offers a comprehensive overview of the sidetrack design, delineating some operational challenges. It also delves into MPD's role in effective equivalent circulating density (ECD), mud weight (MW) management, and tripping strategies needed to comply with regulatory requirements. By presenting key highlights, lessons learned, and recommendations gathered from the operation, this case contributes to the understanding and application of MPD in deepwater exploration.
MPD Well Control During Non-Drilling Operations
Authors: Sanguinetti C. E. , Callerio S. , Atehortua D. , Su D. 
Published: September 2024

Abstract
This study aims to advance the understanding of influx management in Managed Pressure Drilling (MPD) operations. Despite industry efforts to improve kick management using Coriolis flow meters in combination with algorithms for influx volume estimation, and well-established processes for kick circulation, such as Influx Management Envelope (IME) and the MPD matrix, there is still a literature gap regarding kick management with the bit off bottom - a common scenario during tripping, reaming, mud displacement, or running liners.
The identification and control of a kick with the bit off bottom introduces additional complexities, including pipe movement, fluctuating pump pressures, the absence of Equivalent Circulating Density (ECD) readings at the well's total depth (as the bottom hole assembly is off bottom), and temperature effects. These factors may lead to misinterpretations during off-bottom operations, potentially resulting in false alarms. Attempting to control a kick with MPD using drilling procedures may lead to elevated surface pressures or unnecessary and costly killing operations with heavier mud.
This work focuses on analyzing the risks and consequences associated with controlling kicks off bottom with the MPD system while exploring potential solutions, considering both false alarms and true kicks into the wellbore. The analysis is supported by hydraulic simulations and insights from real field experience.
The outcomes of this study will serve as a comprehensive guideline to enhance understanding, mitigate risks, and further development of influx management procedures for MPD, expanding coverage beyond drilling operations to include off-bottom scenarios.
Case Study: First Deepwater Surface Applied Back-Pressure (ABP) MPD Gravel Pack Operation - Design, Execution and Lessons Learned
Authors: Valecillos Juan , Arnone Maurizio , Campbell Patrick 
Published: September 2024

Abstract
Recently an operator embarked in drilling its first Deepwater Appraisal well in an area of the Caribbean Sea. The well objective was to obtain sufficient quality data from target reservoirs to verify the viability of the new asset. The base plan contemplated drilling two legs utilizing a Below Tension Ring (BTR) ABP MPD system for Early Kick and Loss Detection (EKLD) and optimized Bottomhole Pressure (BHP) control. One of the well main objectives was to well test the main reservoir, for which an Open Hole Gravel Pack (OHGP) concept was selected for sand control and a Drill-In Fluid (DIF) system was designed to minimized formation damage. The lower completion run and OHGP job were planned to be executed with a column overbalanced to the pore and stability gradients, however realized bottomhole pressure condition during the drilling phase indicated that a higher effective DHMW was needed to prevent open shales deterioration and hole collapse. The adopted solution to manage the higher-pressure requirement, minimize formation damaged, optimize operation and available resources was to use MPD to run the lower completion and execute the OHGP job. Some of the challenges to overcome included, well control considerations, reverse circulation method, among others.
This paper explores the challenges, planning, execution, and results of the first Deepwater OHGP operation utilizing an ABP MPD system, provides a valuable precedent for future similar applications and presents another example of how the used MPD systems can be extended beyond the drilling phase in well construction operations.