bluuebunny/crossref_metadata_2025 huggingface dataset:
Sistem Pendukung Keputusan Pemilihan Dosen Terbaik dengan menggunakan Metode TOPSIS (Studi Kasus: STMIK Pelita Nusantara Medan)
Authors: Simanjorang R. Mahdalena
Published: October 2021

The decision support system for the best lecturer selection has been made in this study so that it can be recommended to the foundation so that it is efficient compared to the use of the old system. In determining the lecturer at STMIK Pelita Nusantara, the method used is the TOPSIS method using criteria that will be determined by the Foundation. The selection of lecturers at STMIK Pelita Nusantara is determined by several criteria, namely, attendance, teaching, service, research and neatness. The Topsis method is very suitable because the concept is practical. The output in this system is the calculation value of lecturer selection using the TOPSIS method and the ranking of lecturers at STMIK Pelita Nusantara
Penerapan Metode Random Forest untuk Prediksi Win Ratio Pemain Player Unknown Battleground
Authors: Haristu Reinardus Aji , Rosa Paulina H. Prima
Published: October 2021

Online game that is on the rise as one of e-sports is the unknown battleground player. To win the game requires the right strategy. In this paper, a study of effective playing strategies in the player unknown battleground game is explored by extracting data from player statistics taken from the kaggle website. From the statistical data, a model is made to predict the win ratio of each player using the random forest method. From the results of the study, random forest was able to produce an accuracy of 88.19%.
Miedo y Confrontación a la muerte: Estudio en Estudiantes de Ciencias de la Salud
Authors: Padilla Cuadra Juan Ignacio , Torres Fernandez David , Coto Jimenez Ericka , Rodriguez Yebra Lisette , Fonseca Cordero Humberto , Varela Pasos Rosibel
Published: October 2021

La muerte como un evento natural ineludible pero impredecible es un agente generador de ansiedad y temor tanto en pacientes y sus familiares como en profesionales en ciencias de la salud. Es infrecuente que se discuta sobre el tema ni se asignan tópicos en los programas de formación universitaria en ciencias de la salud para el desarrollo de actitudes y competencia especiales en el manejo de pacientes en proceso de morir. Se realizó estudio transversal mediante la aplicación de instrumentos a estudiantes de cuatro carreras de ciencias de la salud para evaluar el nivel de competencia en el afrontamiento según la escala de Bugen, nivel de miedo a la muerte según la escala de Revista Ciencias de la Salud Collett-Lester y se agrega cuestionario para cuantificar el nivel de aceptación a la donación de órganos. Los instrumentos fueron aplicados a un total de 445 estudiantes. La distribución por género fue 97 hombres (21.8 %) y 348 mujeres (78.2 %). Según facultad, los encuestados quedaron distribuidos en 259 (58.2%) de medicina, 94 de farmacia (21.1%), 70 de psicología (15.7%) y 22 de enfermería ( 5.0 %). El análisis de confiabilidad de las escalas aplicadas de acuerdo con Alfa de Cronbach fue superior a 0.80. Al analizar los resultados, usando pruebas T para muestras independientes se encuentran diferencias en religiosidad, miedo a la propia muerte, miedo al propio proceso de muerte, y miedo a la muerte de otros. En esto, puntúan más alto las mujeres. No se demostraron diferencias por género en afrontamiento a la muerte o en actitud hacia la donación de órganos. En cuanto a los resultados por facultad, hay diferencias significativas en el miedo al proceso de muerte de otros donde los estudiantes de farmacia reportan puntajes mayores que los de medicina. Además, este mismo grupo de estudiantes (farmacia) reportan menores puntajes en afrontamiento a la muestra que las demás facultades. Se concluye que hay diferencias en cuanto al miedo a la propia muerte entre los estudiantes de diferentes carreras, así como por género. Se recomienda considerar estos resultados en los procesos de diseño curricular para abordar la capacitación en cuanto a actitudes sobre la muerte a estudiantes de ciencias de la salud.
JURIDICAL ANALYSIS OF VICTIMS OF THE ECONOMIC EXPLOITATION OF CHILDREN UNDER THE AGE TO REALIZE LEGAL PROTECTION FROM HUMAN RIGHTS ASPECTS
Authors: Geovani Iwoeng , Nurkhotijah Siti , Kurniawan Harry , Milanie Feby , Nur Ilham Rico
Published: October 2021

the Aspect of Human Rights (Research Study at the Office of Social Affairs and Community Empowerment), has been carried out as it should, in accordance with Law Number 35 of 2014 concerning Amendments to the Law Number 23 of 2002 concerning Child Protection (Supplementary Gazette of the State Gazette of 2014 Number 5606). The qualification/type of writing in this journal uses normative legal writing, and subsequently integrates it with sociological/empirical legal writing, and to analyze some of the problems in this journal, Satjipto Rahardjo's big theory of legal protection, Jeremy Bentham's middle theory, while Soerjono Soekanto's application/applied theory. The results of the field analysis show that legal protection for children as victims of economic exploitation has not been effective. This means that there are obstacles/obstacles in its implementation, including the obstacles faced in dealing with the problem of violence and economic exploitation of children, namely law enforcement in controlling children, not solving the root problem, only taking curative action, not preventing it. For this reason, it is hoped that the government together with law enforcers will pay more attention and take firm action regarding the problem of economic exploitation of street children, both in terms of guidance and legal sanctions for perpetrators of economic exploitation.
NEUROSCIENCE FOR UNDERSTANDING AND DEVELOPING SUSTAINABILITY: NEUROSUSTAINABILITY
Authors: ŞENBAĞCI ÖZER Fulya
Published: October 2021

Sustainability is a complex and innovative concept that inherently requires the new ways of thinking constantly for basic biological decision-making processes such as adaptation and collaboration. Neuroscience; is a scientific field that investigates the functions and responses of nervous systems and the brain, which are becoming more and more widely used with technological innovations in brain imaging. As an interdisciplinary field neuroscience is especially along with health, engineering, social sciences and art, has led to the emergence of new fields such as neuropsychology, neuroeconomics, neurosociology, neuroinformatics, neuropolitics, neuromarketing, etc. Although a vast majority of neural connections are operated for the continuity of an organism or an organization, unfortunately there have been no extensive studies in sustainability literature that use neuroscience findings, techniques and approaches. In this context, this study fill this gap with the concept of neurosustainability as a new interdisciplinary field that demonstrates its relationship with neuroscience in the field of sustainability and reveal strategic elements and implications for future research.
PROPOSTA DE UMA ABORDAGEM MULTICRITERIAL BASEADA NA MCDA-C PARA A AVALIAÇÃO DE DESEMPENHO: UMA ANÁLISE NO DEPARTAMENTO DE OBRAS, MANUTENÇÃO E SERVIÇOS AUXILIARES DE UM INSTITUTO FEDERAL
Authors: Jordão Kaylla Lage , Gonçalves Tiago José Menezes , Moraes Daniela Da Gama e Silva Volpe Moreira de
Published: October 2021

Este trabalho propõe um modelo multicriterial de avaliação de desempenho para apoiar o processo de gestão em instituições públicas. O modelo foi aplicado ao setor de obras, manutenção e serviços de uma instituição federal. A Metodologia Multicritério de Apoio à Decisão - Construtivista (MCDA-C) foi o instrumento de intervenção adotado para a obtenção e análise dos dados por ser capaz de tratar diferentes tipos de informações e por elicitar os objetivos de decisão conforme os valores dos decisores, possibilitando que eles reflitam sobre suas prioridades e preferências. Como resultados, o modelo possibilitou (i) a medição do desempenho do setor a partir dos aspectos considerados relevantes pelo decisor; (ii) a análise da evolução no desempenho de cada indicador e de suas tendências; (iii) o entendimento dos principais problemas de desempenho do setor e dos pontos passíveis de melhoria; (iv) e a realização de recomendações para resolver os problemas de desempenho identificados.
Powers of a party in administrative enforcement proceedings
Authors: Muzyczka Karolina
Published: October 2021

Enforcement in administrative enforcement proceedings consists in the establishment
by a competent public administration body of a state coercive measure in order to fulfill
public-law obligations. Thus, administrative enforcement is a form of direct interference
by public administration bodies in the sphere of rights and freedoms of an individual,
which means that it is subject to legal regulation. In order to provide an individual
with protection against unjustified interference with their rights and freedoms, the possibility
of applying legal measures against acts and enforcement actions against them
was granted.
State security as a result of systemic action
Authors: Gwardyński Robert
Published: October 2021

The state is an organization that functions in a systemic way. It is the function of the state
to ensure its security. It is ensured by collective actions of the constituent elements of
the state. The main elements of the state ensuring its security are public administration
entities. It is they who, as part of efficient collective actions, create conditions for the
undisturbed development of the state organization.
Práticas Relevantes em Engenharia de Software: uma avaliação de especialistas
Authors: Nogueira Mauro Oddo , da Rocha Ana Regina Cavalcanti
Published: October 2021

O Ministério da Ciência e Tecnologia – MCT do Brasil, através da Secretaria de Política de Informática e Automação – SEPIN, realiza, bienalmente, uma pesquisa que objetiva avaliar o perfil da indústria brasileira de software no que se refere à Qualidade. Essa pesquisa é conduzida através de um questionário distribuído a uma parcela significativa da indústria. Nele, são relacionadas práticas relativas à Engenharia de Software, documentação e ferramentas. Todavia, não há consenso em relação a quais destas são, efetivamente, relevantes para a Qualidade do software. O presente trabalho consiste em uma pesquisa de campo com especialistas que objetiva identificar quais dessas práticas, documentações e ferramentas de fato impactam a Qualidade do software. Seus resultados permitem, além de aprimorar a própria pesquisa SEPIN, balizar a atuação dos gerentes e desenvolvedores, auxiliando-os na conformação de seus processos de software.
Proposta de Portal do Conhecimento na Secretaria da Receita Federal como ferramenta de Gestão do Conhecimento para Suporte de Tecnologia da Informação
Authors: Strauss Leandro , Silva Júnior Ovidio Felippe Pereira
Published: October 2021

Os novos tempos têm gerado, por parte da sociedade, novas demandas e expectativas em relação às formas de administração e atuação das organizações públicas. O conhecimento gerado e utilizado por estas organizações é que vai proporcionar a capacidade de mudança e inovação capaz de atender a estes anseios. Este artigo apresenta o protótipo de um portal do conhecimento a ser utilizado na Secretaria da Receita Federal (SRF) em PR e SC. que auxilie na gestão eficiente dos conhecimentos de seus funcionàrios, melhorando os processos de trabalho de suporte à TI, evitando a perda de conhecimentos valiosos e integrando as bases de conhecimento já existentes, adequando-a aos novos tempos e formas de administração.
Sistema de Gerenciamento de Workflow baseado em Redes de Petri e em Algoritmos Genéticos
Authors: Malaquias Fernanda , Arantes Webert , Lamounier Jr. Edgard , Cardoso Alexandre
Published: October 2021

A fim de enfrentar novos desafios, as empresas têm adotado tecnologias que lhes permitem lidar com a informação de maneira eficiente. O uso de Sistemas de Gerenciamento de Workflow (SGW) tem sido importante nesse contexto. ?o entanto, para que haja sucesso na implementação destes sistemas, as empresas precisam apostar não só na modelagem adequada dos seus processos de negócio, mas também no uso de técnicas de otimização para o escalonamento de tarefas em tempo real. Diante disso, este artigo visa propor um SGW que, se baseia em redes de Petri para a modelagem formal de processos e em Algoritmos Genéticos (AG) para o escalonamento em tempo real. A técnica proposta foi testada em um protótipo com interface 3D. Foram realizadas comparações com a técnica FIFO e em todos os casos o AG se mostrou mais eficiente.
Estudos de caso de aplicativos móveis no governo brasileiro
Authors: Andrade Alisson Wilker , Agra Ronaldo , Malheiros Viviane
Published: October 2021

No Brasil, o uso de internet móvel e de dispositivos móveis, como tablets e smartphones, tem crescido a taxas mais altas do que a média mundial nos últimos anos. O uso desses dispositivos tem modificado a forma como as pessoas interagem entre si e com as empresas ao redor, e também tem grande potencial para alcançar as relações governo-governo, governoempresa e governo-cidadão. Nesse sentido, este artigo apresenta os desafios de construir aplicativos para dispositivos móveis no contexto do governo federal, discutindo e comparando as possíveis arquiteturas de aplicativos existentes no mercado e apresentando 2 estudos de caso de aplicativos construídos pelo SERPRO para a Receita Federal e para o DNIT.
Ubiquitination Enzymes
Authors: Habu Toshiyuki , Kim Jiyeong
Published: October 2021

Posttranslational protein modifications by mono- or polyubiquitination are involved in diverse cellular signaling pathways and tightly regulated to ensure proper function of cellular processes. Three types of enzymes, namely ubiquitin-activating enzymes (E1), ubiquitin-conjugating enzymes (E2), and ubiquitin-protein ligases (E3), contribute to ubiquitination. Combinations of E2 and E3 enzymes determine ∼ the fate of their substrates via ubiquitination. The seven lysine residues of ubiquitin, Lys6, Lys11, Lys27, Lys29, Lys33, Lys48, and Lys63, can serve as attachment sites for other ubiquitin molecules. Lys48 (K48)-linked polyubiquitination facilitates recognition of the conjugated protein by proteasome molecules and subsequent proteolytic degradation of the target protein. By contrast, Lys63 (K63)-linked polyubiquitination appears to be involved in polyubiquitin signaling in critical cellular processes, such as DNA repair, regulation of the I-kappaB kinase/NF-kappaB cascade, or T cell receptor signaling, but not protein degradation. In this review, we describe the properties of ubiquitin modification enzymes and the structural interplay among these proteins.
Spinal Anesthesia in Pediatrics
Authors: Hernández-Cortez Enrique , M. Martínez-Barragán Yolanda , L. Iñiguez-Lopéz Karen
Published: October 2021

The survival of preterm newborn patients (PNB) depends in a great extent on the anesthetic technique used. Spinal anesthesia (SA) is considered the best-tolerated regional anesthetic method for highly unstable newborn infants (NB) with high risk of complications during the perioperative period. SA has been recommended for children at high risk for postoperative apnea due to general anesthetics or prematurity. Bronchopulmonary dysplasia (BPD) in the newborn is a disease that accompanies the patient to the operating room with a high incidence of mortality. SA in emergency surgery is a well-tolerated anesthetic procedure with proven effectiveness, with less hemodynamic and respiratory repercussions. At the same time, it produces greater protection against surgical stress in the NB weakened by the premature condition. Hemodynamic stability remains constant even in the newborn with heart disease.
Assessment of Educational Intervention Effects on the Level of Oxidative Stress Parameters and Performance in Oncology Staff
Authors: Riazat Afsaneh , Akbari Mohammad Esmaeil , Farhang Somayeh , Rakhshanderou Sakineh , Mirzaei Hamidreza , Azadeh Payam , Rezazadeh Azari Mansour , Panahi Davoud
Published: October 2021

Background: Occupational exposure to antineoplastic drugs causes the production of free radicals and their reaction with macromolecules in the body. Objectives: The present study was conducted to evaluate the effectiveness of the educational intervention by using urinary oxidative stress indices of the oncology staff in Iranian hospitals. Methods: Healthy full-time oncology and pharmacy staff (n = 45) participated in this prospective interventional study. The training of the personnel for proper handling of the antineoplastic drugs was given. During their work shift, their performance was recorded in a checklist. Urinary oxidative stress indices of the staff and scores of their performances were obtained before and after their training. Results: The mean performance score of all oncology staff was statistically higher than after 2 months of educational intervention (P < 0.001). The mean activity levels of Superoxide Dismutase and Catalase enzymes of all oncology staff was statistically lower than after 2 months of educational intervention (P < 0.001). The mean level of Malondialdehyde of all oncology staff was statistically lower than after 2 months of educational intervention (P < 0.05). Conclusions: Educational intervention increased oncology staff performance score and it affected the level of the oxidative stress parameters 2 months after the educational intervention by decreasing the activity of enzymes and the level of malondialdehyde.
State capture and security intelligence agencies in Serbia
Authors: Petrović Predrag
Published: October 2021

Security intelligence agencies play a central role in state capture. Due to the very nature of how they are organised and operate, security intelligence agencies first become targets of these processes, before becoming their principal agents. Indeed, political elites and security intelligence agencies become natural partners in this endeavour, with the very process of state capture coming to resemble a complex intelligence operation. Even though the experiences of many countries bear this out, attempts to research the role of security intelligence agencies in a systematic and theoretically grounded manner remain rare. By using recent theoretical approaches defining state capture as a deliberate political undertaking, the main goal of which is the acquisition of unrestricted state power that in turn enables the unhindered and unsanctioned pursuit of the narrow interests of political elites to the detriment of the public good, this study aims to determine the factors, conditions and mechanisms that facilitate the rapid capture of security services and their further use in capturing the state. This will be explored through the example of Serbia - a country that, two decades on from the start of its democratic transformation, is now a captured state sliding towards autocracy.
La trajectoire du renouveau minier dans la presse écrite française (2009‑2019)
Authors: Chailleux1 Sébastien
Published: October 2021

L’article analyse la trajectoire argumentative du renouveau minier dans la presse française entre 2009 et 2019. Après avoir décrit la construction de l’énoncé de relance de l’exploration minière dans un espace confiné alliant experts du sous-sol et services administratifs, je montre la manière dont cet énoncé a été critiqué dans la presse régionale française ainsi que l’émergence d’une problématisation du renouveau minier comme un danger environnemental et un déni de démocratie. Basé sur une série d’entretiens semi-directifs et une analyse d’un corpus de 699 articles de presse, l’article pointe trois faiblesses de l’énoncé propositionnel de renouveau minier participant à son échec dans le forum médiatique : l’inadéquation du modèle spéculatif de la petite société d’exploration, l’inconsistance et l’inconstance du portage politique et l’inadaptation du régime de justification experte face aux critiques. Il s’agit alors de souligner que la portée d’un énoncé de politique publique est déterminée par sa capacité à traverser différents espaces de débat, confinés et publics, et à s’adapter à leurs règles et aux régimes de faisabilité qui les structurent.
Triggers and Diagnosis of Parasomnias in Children –A Review
Authors: Fouad Heba A. , Jamaluddin Hussam abdulshakour , Alwadai Mari Osman , Alqahtani Ismail Zayed , AlGhuraybi Nawaf Abdullah , Kariri Abdulaziz Mohammed , Kariri Reem Mohammed , Faqihi Ibrahim Hassan , Aleid Ali Mohammed , Dakheel Khalid Abdulrahman Al , Saed Fahad Mohammed
Published: October 2021

The occurrence of parasomnias, which are most common during childhood, is one probable early sign of psychosis vulnerability. 6–8 Frequent nightmares have long been thought to play a role in the development of psychosis. In the outpatient clinics, sleep problems are one of the most common presentations. In fact, maladaptive sleep patterns are linked to up to 50% of major complaints in primary care settings. The etiology of parasomnias is unknown because no obvious cause has been identified; nonetheless, a variety of explanations have developed. The majority of childhood parasomnias (confessional arousals, sleepwalking, sleep terror, and nightmares) are harmless, and most children outgrow them. As a result, reassuring and educating the parents can be beneficial in those situations without the need for medical assistance. With that being said there’s also serval medical approaches that address such a disease. In this article we will be looking at the disease epidemiology, etiology, diagnosis and treatment.
Emergent Management of Thermal Burns in Emergency Rooms Saudi Arabia - A Review
Authors: Sonbul Hisham Mohammed , Alqahtani Mohammed Ali Mohammed , Bajebair Abdullah Mohammed , Aljameely Ali Abdallah A. , Aloudah Saud Ali , Alshamrani Mohammed Ali M. , Alharthi Fayez Abdulaziz A
Published: October 2021

According to WHO statistics, over 300,000 people die each year by burns, and more dying from electric burns, scalds or other causes of burns. Burn injuries and wounds are typically fatal. And they can cause serious long-term implications for victims. The most important aspect in reducing the morbidity and mortality associated with burns is to prevent them. Exposure of tissue to an external high temperature source causes thermal burns. Burns that occur at greater temperatures or over longer periods of time cause deeper and more serious injuries. Because burn patients are the most common trauma patients, the initial step in treating them should be to assess and stabilize their airway, breathing, and circulation according to ATLS standards. Supportive care should include crystalloid resuscitation, blood composition, and potentially endotracheal intubation. In this review we will be looking at thermal burns epidemiology, etiology, pathophysiology and most importantly management.
A CRIAÇÃO DO SENSO COMUM PUNITIVO POR INTERMÉDIO DA CRIMINOLOGIA MIDIÁTICA: UMA ANÁLISE DA REALIDADE CONSTRUÍDA A PARTIR DE MATÉRIAS EXIBIDAS NO PLANTÃO ALAGOAS
Authors: França Júnior Francisco , Leitão Santos Bruno Cavalcante , Silva Caroline Soares da
Published: October 2021

O presente estudo tem como escopo discutir a contribuição da Criminologia Midiática na formação do senso comum punitivo, restringindo o pensamento abstrato de forma a levar o receptor da mensagem a acreditar no que o discurso midiático nos revela, direcionando a política criminal de combate ao crime a certos grupos, por meio da criminalização secundária e formação de bodes expiatórios. Com isso, fez-se necessário analisar os discursos midiáticos, principalmente aqueles às quais estão mais predispostos a influir no pensamento humano, como é o caso dos programas de plantão policial. Desta feita, teve-se como objeto de análise o programa Plantão Alagoas, que vai ao ar das 11h30 às 14h00, sendo observado os discursos de todas as segundas-feiras do mês de fevereiro de 2020. Destarte, foi realizado uma investigação qualitativa do discurso midiático do programa supracitado atrelado aos conhecimentos da Criminologia Midiática, não se pretendendo esgotar com os aspectos que abrangem o tema, apenas suscitar a problemática que lhe envolve.
Improved V2OX Passivating Contact for p‐Type Crystalline Silicon Solar Cells by Oxygen Vacancy Modulation with a SiOX Tunnel Layer
Authors: Du Guanlin , Li Le , Yang Xinbo , Zhou Xi , Su Zhenhuang , Cheng Peihong , Lin Yinyue , Lu Linfeng , Wang Jilei , Yang Liyou , Gao Xingyu , Chen Xiaoyuan , Li Dongdong
Published: October 2021

Transition metal oxide (TMO) thin films featuring tunable work function, high transmittance, and simple fabrication process are expected to serve as carrier‐selective transport layers for high‐efficiency crystalline silicon (c‐Si) solar cells. TMOs are prone to reaction or elemental migration with adjacent materials, which leads to uncontrollable optical and electrical properties. In this work, V2OX passivating contact, a promising hole transport layer (HTL) thanks to its high work function, is investigated and implemented in p‐type c‐Si solar cells. An ultrathin SiOX tunnel layer is intentionally introduced by UV/O3 pretreatment to suppress the redox reaction at c‐Si/V2OX interface. Both saturation current density and contact resistance are reduced with the presence of UV‐SiOX due to the well tunned oxygen vacancies in SiOX and V2OX thin films. The power conversion efficiency (PCE) based on p‐Si/UV‐SiOX/V2OX/Ag rear contact achieves 21.01% with an increased open‐circuit voltage of 635 mV and fill factor (FF) of 83.25%.
Collectively Exhaustive MXene and Graphene Oxide Multilayer for Suppressing Shuttling Effect in Flexible Lithium Sulfur Battery
Authors: Nam Sanghee , Kim Jaehwan , Nguyen Van Hiep , Mahato Manmatha , Oh Saewoong , Thangasamy Pitchai , Ahn Chi Won , Oh Il‐Kwon
Published: October 2021

The shuttling effect of lithium polysulfide (LiPS), which leads to the gravest capacity degradation, is one of the critical problems to hindering the commercialization of lithium–sulfur batteries (LSBs). Here, collectively exhaustive Ti3C2Tx MXene and graphene oxide (GO) multilayers are reported to suppress the shuttling effect by utilizing both physical inhibition of micro/mesoporous and chemical absorption of surface functional groups. The abundant surface functional groups of GO and MXene attract the positively charged lithium ion (Li+) and eject the negatively charged polysulfides (Sn2–) through electrostatic affinity and repulsion. A simple approach using vacuum filtration is utilized to encapsulate elemental sulfur (S8) between GO and MXene film (GSM), acting as a permselective separator and functionalized current collector, respectively. The functionally antagonistic GSM directly plays a role in a cathode for LSBs and exhibits a specific capacity of 1425 mAh g–1 at 0.1C in the initial cycle. The abundant functional groups, which can chemisorb the LiPSs, result in a high cyclic retention of ≈85.1% after 500 cycles. Furthermore, a flexible LSB is demonstrated with a PEO‐LiTFSI electrolyte based on the flexibility of the exceptionally thin GSM due to the 2D nanomaterials, MXene and graphene oxide.
Luminescent Poly(vinylidene fluoride)‐Based Inks for Anticounterfeiting Applications
Authors: Correia Daniela Maria , Polícia Rita , Pereira Nelson , Rial Tubio Carmen , Cardoso Marita , Botelho Gabriela , Ferreira Rute A. S. , Lanceros-Méndez Senentxu , de Zea Bermudez Verónica
Published: October 2021

Counterfeiting is a global ever‐growing problem of immense magnitude that represents a menace to security, economy, and health at a worldwide level. Herein, a new luminescent security ink composed of poly(vinylidene fluoride) (PVDF) and the home‐made ionic liquid (IL) 1‐butyl‐3‐methylimidazolium tetra(thenoyltrifluoroacetonato)europate(III) ([Bmim][Eu(tta)4]) is reported. The optimized PVDF/[Bmim][Eu(tta)4] composite is processed by the doctor blade method as a micrometer‐thick film invisible under white light, with porous texture. The material exhibits high thermal stability, high chemical stability (inertness with respect to ethanol), high photostability, and intense red emission when excited with long UV radiation (365 nm) with a maximum quantum yield value of 0.10 ± 0.01. A test of the PVDF/[Bmim][Eu(tta)4] ink screen‐printed on a medical N95 protection mask performed under irradiation with white light and with a commercial 365 nm LED demonstrates its suitability to combat fraud. The exciting possibilities offered by PVDF/luminescent IL pair in terms of chemical modification of PVDF (copolymerization or functionalization) and IL (cation type/lanthanide ion/ligand type) for the tuning of the ink properties allow envisaging the production of tailor‐made tri‐ or biluminescent security inks, for authentication purposes.
Mediated Inner‐Sphere Electron Transfer Induces Homogeneous Reduction of CO2 via Through‐Space Electronic Conjugation**
Authors: Hooe Shelby L. , Moreno Juan J. , Reid Amelia G. , Cook Emma N. , Machan Charles W.
Published: October 2021

The electrocatalytic reduction of CO2 is an appealing method for converting renewable energy sources into value‐added chemical feedstocks. We report a co‐electrocatalytic system for the reduction of CO2 to CO comprised of a molecular Cr complex and dibenzothiophene‐5,5‐dioxide (DBTD) as a redox mediator, which achieves high activity (TOF=1.51–2.84×105 s−1) and quantitative selectivity. Under aprotic or protic conditions, DBTD produces a co‐electrocatalytic response with 1 by coordinating trans to the site of CO2 binding and mediating electron transfer from the electrode with quantitative efficiency for CO. This assembly is reliant on through‐space electronic conjugation between the π frameworks of DBTD and the bpy fragment of the catalyst ligand, with contributions from dispersive interactions and weak sulfone coordination.
Production of Alkyl Aryl Sulfides from Aromatic Disulfides and Alkyl Carboxylates via a Disilathiane–Disulfide Interchange Reaction
Authors: Nakajima Takumi , Takano Ken , Maeda Hiromu , Ogiwara Yohei , Sakai Norio
Published: October 2021

The results of this study show that disilathiane is an effective mediator in the synthesis of alkyl aryl sulfides with disulfides and alkyl carboxylates. Mechanistic studies suggest that disilathiane promotes cleavage of the sulfur–sulfur bond of disulfides to generate thiosilane as a key intermediate. Diselenides were also applicable to this transformation to produce the corresponding selenides.
Sulfur‐driven autotrophic denitrification of nitric oxide for efficient nitrous oxide recovery
Authors: Wu Lan , Wang Li‐Kun , Wei Wei , Song Lan , Ni Bing‐Jie
Published: October 2021

Nitrous oxide (N2O) was previously deemed as a potent greenhouse gas but is actually an untapped energy source, which can accumulate during the microbial denitrification of nitric oxide (NO). Compared with the organic electron donor required in heterotrophic denitrification, elemental sulfur (S0) is a promising electron donor alternative due to its cheap cost and low biomass yield in sulfur‐driven autotrophic denitrification. However, no effort has been made to test N2O recovery from sulfur‐driven denitrification of NO so far. Therefore, in this study, batch and continuous experiments were carried out to investigate the NO removal performance and N2O recovery potential via sulfur‐driven NO‐based denitrification under various Fe(II)EDTA‐NO concentrations. Efficient energy recovery was achieved, as up to 35.5%–40.9% of NO was converted to N2O under various NO concentrations. N2O recovery from Fe(II)EDTA‐NO could be enhanced by the low bioavailability of sulfur and the acid environment caused by sulfur oxidation. The NO reductase (NOR) and N2O reductase (N2OR) were inhibited distinctively at relatively low NO levels, leading to efficient N2O accumulation, but were suppressed irreversibly at NO level beyond 15 mM in continuous experiments. Such results indicated that the regulation of NO at a relatively low level would benefit the system stability and NO removal capacity during long‐term system operation. The continuous operation of the sulfur‐driven Fe(II)EDTA‐NO‐based denitrification reduced the overall microbial diversity but enriched several key microbial community. Thauera, Thermomonas, and Arenimonas that are able to carry out sulfur‐driven autotrophic denitrification became the dominant organisms with their relative abundance increased from 25.8% to 68.3%, collectively.
Tuning Metal‐Support Interaction and Surface Acidic Sites of Ni/Al2O3 by Dopamine Modification for Glycerol Steam Reforming
Authors: Wang Yunzhu , Zhu Songshan , Zheng Xiangqian , Lu Jichang , Zhao Yi , He Sufang , Lu Huihui , Luo Yongming
Published: October 2021

In this work, a universal dopamine modification strategy is used to improve the catalytic performance of Ni/Al2O3 for hydrogen production in glycerol steam reforming (GSR). Ni/Al2O3 showed poor catalytic stability with rapid deactivation after 8 h of reaction in GSR. Glycerol conversion and hydrogen selectivity were significantly higher for dopamine‐modified Ni/Al2O3 (by 98 % and 95 %, respectively) and this improved performance was maintained well for 21 h in the stability test. The protective carbon shell derived from dopamine was formed easily on the Ni/Al2O3 surface, the aggregation of Ni nanoparticles was inhibited, and the dispersion of Ni nanoparticles was improved. The electron‐donating effect of amino group to Ni2+ weakened the Ni‐Al2O3 interaction, and then promoted the reduction of the Ni species. In addition, the decrease in the number of strong acidic sites reduced the amount of carbon deposition on dopamine‐modified Ni/Al2O3. The moderate metal‐support interaction was more conducive to the formation of filamentous carbon, which collectively contributed to the increased catalytic stability of dopamine‐modified Ni/Al2O3. The facile dopamine‐modified method significantly improves the catalytic performance and can be generalized to other catalytic reaction that involve sintering and carbon deposition issues.
Nanoscale CuFe2O4 Uniformly Decorated on Nitrogen‐Doped Carbon Nanofibers as Highly Efficient Catalysts for Polysulfide Conversion in Lithium‐Sulfur Batteries
Authors: He Yanping , Bi Mingzhu , Yu Heli , Zhang Cuijuan , Majeed Arslan , Shen Xiangqian , Yao Shanshan
Published: October 2021

Lithium‐sulfur (Li−S) batteries have been considered one of the most promising energy storage systems, owing to the theoretical specific capacity (1675 mAh g−1) and energy density (2600 Wh g−1). However, it is challenging to solve the shuttling and low reduction kinetics of lithium polysulfides. Hence, the combination of electrospun and hydrothermal treatments acts as an effective strategy to synthesize copper ferrite nanoparticles decorated on nitrogen doped carbon nanofibers (CF/NC). The resultant material is employed as a positive current collector containing Li2S6 catholyte for Li−S batteries. The addition of CF nanoparticles plays a vital role in capturing polysulfides in both physical and chemical adsorption. Besides, promoted sulfur conversion kinetics are obtained due to the excellent catalytic effect, which enabled significantly improved sulfur utilization, high‐rate capability, and cycling stability. Under a 5.75 mg sulfur loading, the cell with CF/NC delivers an excellent cycling stability with 609 mAh g−1 after 300 cycles at 0.2 C. Even at 12.15 mg high sulfur loading, the high initial capacity of the cell is 9.4 mAh at 0.1 C.
Synthetic Studies on Alotamide A: Construction of N‐Demethylalotamide A
Authors: Souto José A. , Román David , Domínguez Marta , de Lera Ángel R.
Published: October 2021

Several approaches to the synthesis of cyclodepsipeptide natural product alotamide A are described, eventually affording a very advanced N‐demethylated analogue of the targeted natural product. The difficulties found in our endeavors on the synthesis of alotamide A have allowed us to gather some valuable information regarding the most convenient synthetic step for each key transformation. The intramolecular Csp2−Csp2 Stille cross‐coupling and the macrolactam formation were found to be reliable protocols for the final construction of the alotamide A skeleton.
Diversity In Motivations and Behavioral Response to Regulations in the Striped Bass Commercial Fishery
Authors: Murphy Robert , Scyphers Steven , Gray Steven , Grabowski Jonathan H
Published: October 2021

It is evident that fishery stakeholder groups are not homogenous, and that inter- and intra-group variation can exist in the form of unique perspectives, motivations for fishery participation, and receptiveness to management measures. However, management agencies often allocate quota and design regulatory plans around distinct groups, such as recreational versus commercial sectors. Our study used the commercial fishery for Striped Bass Morone saxatilis as a case study to explore the motivations and behaviors of commercial fishers in Massachusetts. Results of an online and mail survey suggest that many commercial fishers maintain several motivations for fishing, including both monetary and non-monetary, like the desire to be outdoors. Intended behavior differences emerged in response to several hypothetical regulatory scenarios, and these disparate behaviors could be partly explained by heterogeneity in fisher motivations and other fishing and non-fishing attributes. Additionally, we uncovered spillover effects, whereby effort controls could impact other commercial and recreational fisheries. We recommend a relaxation of the assumption that commercial fishers are solely motivated by monetary outcomes, and that holistic approaches to management include information on fisher behavior and motivations.
Inclined magnetized and energy transportation aspect of infinite shear rate viscosity model of Carreau nanofluid with multiple features over wedge geometry
Authors: Shah Syed Zahir Hussain , Fathurrochman Irwan , Ayub Assad , Altamirano Gilder Cieza , Rizwan Ali , Núñez Rafaél Artidoro Sandoval , Sabir Zulqurnain , Yeskindirova Manshuk
Published: October 2021

Heat transference in fluid mechanism has a deep influence in real‐life applications like hot‐mix paving, recovery of energy, concrete heating, heat spacing, refineries, distillation, autoclaves, reactors, air conditioning, and so forth. In this attempt, findings related to energy exchange with features of infinite shear rate viscosity model of Carreau nanofluid by placing inclined magnetic dipole over the wedge are made. The main role in the transportation of heat is exercised by incorporating facts of radiation, nonuniform heat sink source, Brownian motion, thermophoresis, and chemical reaction. The mathematical system of the infinite shear rate viscosity model of Carreau nanofluid gives a system of partial differential equations and furthermore, these are moved into ordinary differential equations. A numerical procedure is applied via shooting/bvp4c to obtain numerical results. Inclined magnetic dipole gives a lower velocity of Carreau nanofluid. Due to the relaxation time factor velocity of Carreau fluid gets down. A* causes to generate the heat internally, so due to this, temperature increases rapidly. The increasing rate of temperature is found very high for the growing Hartmann number. The rate of mass transport becomes low for gradual increment in the parameter of thermophoresis, wedge angle, and Prandtl. Inclined magnetic dipole gives a lower velocity of Carreau nanofluid. Due to the relaxation time factor, the velocity of the Carreau fluid goes down. The absence and presence of magnetic numbers have no influence on velocity, temperature, and concentration files for Le, Rd, θf, γ, We, β, Pr, Nb, Nt, A.
Vitamin D Modulation of Mitochondrial Oxidative Metabolism andmTOREnforces Stress Adaptations and Anticancer Responses
Authors: Quigley Mikayla , Rieger Sandra , Capobianco Enrico , Wang Zheng , Zhao Hengguang , Hewison Martin , Lisse Thomas S
Published: October 2021

The relationship between the active form of vitamin D3(1,25‐dihydroxyvitamin D, 1,25(OH)2D) and reactive oxygen species (ROS), two integral signaling molecules of the cell, is poorly understood. This is striking, given that both factors are involved in cancer cell regulation and metabolism. Mitochondria (mt) dysfunction is one of the main drivers of cancer, producing more mitochondria, higher cellular energy, and ROS that can enhance oxidative stress and stress tolerance responses. To study the effects of 1,25(OH)2D on metabolic and mt dysfunction, we used the vitamin D receptor (VDR)‐sensitive MG‐63 osteosarcoma cell model. Using biochemical approaches, 1,25(OH)2D decreased mt ROS levels, membrane potential (ΔΨmt), biogenesis, and translation, while enforcing endoplasmic reticulum/mitohormetic stress adaptive responses. Using a mitochondria‐focused transcriptomic approach, gene set enrichment and pathway analyses show that 1,25(OH)2D lowered mt fusion/fission and oxidative phosphorylation (OXPHOS). By contrast, mitophagy, ROS defense, and epigenetic gene regulation were enhanced after 1,25(OH)2D treatment, as well as key metabolic enzymes that regulate fluxes of substrates for cellular architecture and a shift toward non‐oxidative energy metabolism. ATACseq revealed putative oxi‐sensitive and tumor‐suppressing transcription factors that may regulate important mt functional genes such as the mTORC1 inhibitor,DDIT4/REDD1. DDIT4/REDD1 was predominantly localized to the outer mt membrane in untreated MG‐63 cells yet sequestered in the cytoplasm after 1,25(OH)2D and rotenone treatments, suggesting a level of control by membrane depolarization to facilitate its cytoplasmic mTORC1 inhibitory function. The results show that 1,25(OH)2D activates distinct adaptive metabolic responses involving mitochondria to regain redox balance and control the growth of osteosarcoma cells. © 2021 The Authors.JBMR Pluspublished by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
The Relative Influence of Age Structure, Predation, and Temperature on Stock–Recruitment Dynamics: A Case Study of Southern New England/Mid-Atlantic Winter Flounder
Authors: Siskey Matthew R. , Frisk Michael G.
Published: October 2021

Stock size estimates used in stock–recruitment models often assume that reproductive output per individual is equal despite evidence that larger, older spawners contribute diverse spawning behaviors and disproportionately more to reproductive output. This is concerning since depleted population states often coincide with a compromised age structure and increased control of extrinsic forces (environmental conditions or predator–prey dynamics) on stock productivity. In this study, parameterizations of the stock–recruitment relationship for Winter Flounder Pseudopleuronectes americanus, which incorporated covariate metrics describing age structure, temperature, and predation, were compared to identify primary drivers across area-specific data sets that are included in recent regional stock assessments. Four of the six data sets resulted in a top-ranked model that incorporated an age structure metric; however, the age structure metric model was alone in the pool of top-ranked models for only two of these scenarios. In addition, one data set resulted in a base Ricker model, and one resulted in a model that incorporated a predator index. Finally, wavelet analysis identified significant coherence between fishing mortality rate (F) and spawning stock biomass (SSB) for Winter Flounder, which switched from an out-of-phase state to an in-phase state during the 1990s. If the relationship between these model-derived estimates of F and SSB reflects dynamics of the Winter Flounder population, it would have strong implications for management efforts.
Novel Methodologies for Multiaxial Strain Measurements with Piezoresistive Films based on Graphene Nanoplatelets
Authors: Yokaribas Volkan , Kraemer Peter , Mende Alexander B. , Ruhkopf Jasper , Lemme Max C. , Fritzen Claus-Peter
Published: October 2021

Many recent investigations in the context of graphene nanoplatelets (GNPs) coatings report surface strain measurements by using piezoresistive sensing capabilities. An often underestimated problem is that the strain field is unknown and the principal strain components as well as their orientations must be determined. Herein, GNP films subjected to multiaxial strain are examined. Experimental results show that although the sensitivity to longitudinal strain is the highest, the ratio between transverse and longitudinal sensitivity exceeds 0.5. The sensitivity to shear strain is much lower. A model assisted study of a random network provides additional guidelines for the different electromechanical sensitivities. In practice, the GNP film is usually subjected to different strains simultaneously so that the multiaxial strain measurement becomes difficult. Therefore, two novel approaches for sensing plane strain components with circular GNP films are developed and successfully verified in experiments. The numerical approach is called strain‐differential electrical impedance tomography (SD‐EIT), where the proposed piezoresistive model elementwise in a finite element model is implemented and the strain components of a strain rosette are reconstructed. Moreover, an analytical approach is derived from SD‐EIT and exhibits further the opportunity to detect anomalies within the piezoresistive sensing behavior of GNP films.
Deodorizing effects of sepiolite on odorous volatile organic compounds of natural rubber latex films
Authors: Bing Kok Lei , Hasan Husna Madihah , Othman Norhayani , Man Siti Hajjar Che , Baharulrazi Norfhairna
Published: October 2021

This study reports the efficiency of sepiolite in reducing odorous volatile organic compounds (VOCs) from natural rubber. Natural rubber latex (NRL) films with various content of sepiolite were prepared, ranging from 0 to 2.0 parts per hundred rubbers. The presence of odous VOCs in neat NRL films and NRL/sepiolite films has been confirmed by using gas chromatography‐mass spectrometry. Most of odorous VOCs with odor detection threshold (ODT) of less than 0.1 ppm were significantly reduced in the presence of sepiolite. The result of dynamic olfactometry analysis also shows a negative correlation between odor concentration and the sepiolite content. The addition of 2.0 phr sepiolite in NRL/sepiolite‐T and NRL/sepiolite‐C reduced the odor concentration of NRL films by 69.1% and 59.4%, respectively. This proves that the mesoporous sepiolite‐T adsorbed more odorous VOCs in the NRL films, as compared to macroporous sepiolite‐C. Thus sepiolite‐T is a promising deodoriz er for NRL films due to its higher odorous VOCs adsorption potentials.
Electron EDM arising from modulus τ in the supersymmetric modular invariant flavor models
Authors: Tanimoto Morimitsu , Yamamoto Kei
Published: October 2021

Abstract

The electric dipole moment (EDM) of electron is studied in the supersymmetric A4 modular invariant theory of flavors with CP invariance. The CP symmetry of the lepton sector is broken by fixing the modulus τ. Lepton mass matrices are completely consistent with observed lepton masses and mixing angles in our model. In this framework, a fixed τ also causes the CP violation in the soft SUSY breaking terms. The electron EDM arises from the CP non-conserved soft SUSY breaking terms. The experimental upper bound of the electron EDM excludes the SUSY mass scale below 4–6 TeV depending on five cases of the lepton mass matrices. In order to see the effect of CP phase of the modulus τ, we examine the correlation between the electron EDM and the decay rate of the μ → eγ decay, which is also predicted by the soft SUSY breaking terms. The correlations are clearly predicted in contrast to models of the conventional flavor symmetry. The branching ratio is approximately proportional to the square of |de/e|. The SUSY mass scale will be constrained by the future sensitivity of the electron EDM, |de/e| ≃ 10−30 cm. Indeed, it could probe the SUSY mass range of 10–20 TeV in our model. Thus, the electron EDM provides a severe test of the CP violation via the modulus τ in the supersymmetric modular invariant theory of flavors.