bluuebunny/crossref_metadata_2025 huggingface dataset:
Oracles of the Cosmos - Between Pantheism and Secularism
Authors: Blum Paul Richard
Published: May 2022

The divide between science and religion has its roots in the early modern period. In the first part, the popular talk of oracles of reason is traced back to the ancient oracles published in the 15th century, and it is shown how this led to the emergence of a “natural” theology that does without revelation, so that eventually reference to a divine creator seems superfluous. In the second part, using the concept of the cosmos, it is shown that mathematics, especially geometry, has been part of the theological interpretation of Creation since the Middle Ages. From this developed the concept of transcendence as rooted in human thought. Therefore, cosmos, creation, and humanity, which are mutually exclusive, form a unity of complementary elements.
Missing Race-Based Data in Pediatrics: Why and Where
Authors: Boroditsky Noah
Published: May 2022

Background: Racism, the differential treatment of people based on their perceived racial or ethnic identity, causes health inequities between racial groups. An absence of race or ethnicity data (RED) in healthcare makes evaluation and awareness of health inequalities caused by systemic racism challenging. Current literature is scarce on collection methods of RED in healthcare globally. 

Methods: English language references and grey literature published in MEDLINE, Embase, and relevant sources between January 1, 2000, and July 3, 2021, were identified after consultation with a research librarian. Abstracts were evaluated for inclusion and exclusion criteria. Thematic analysis and data extraction were conducted after full-body reviews. Studies included in the final review focused on participants ≤18, were based in a healthcare facility and collected race or ethnicity data. 

Results: A total of 1,193 references were collected in the initial search (296 MEDLINE, 894 Embase, 3 other). After a full-body evaluation, 28 references were retained and included in the final analysis. Articles were set in the United States (n=7), Canada (n=5), Australia (n=4), and the United Kingdom (n=1). RED was collected using Electronic Medical Records (n=8), Electronic Health Records (n=6), collaborative studies (n=2), Patient Chart Documentation (n=1), and National Emergency Services Information System (NEMSIS) data (n=1). RED was collected in Tertiary care centers (n=8), Secondary care centers (n=1), a Primary care center (n=1), and a Quaternary care center (n=1). Racial and ethnic categories discussed in the literature included: White, Hispanic, Black, Indigenous, Aboriginal, and Asian. Six articles explicitly reported a need for more RED collection. 

Conclusion: Collecting RED is critical to understanding health inequities and the impacts of racism in healthcare. Globally, there is limited information on RED collection. We strongly endorse the recommendation of the BC Office of Human Rights Commissioner on the collection of RED in all age groups, including pediatrics. Capturing RED respectfully, meaningfully, and accurately across all groups will help identify potential associations, barriers, and inequities in health outcomes, helping to mitigate and eliminate systemic racism in healthcare.
Hazel's Journey in Healing
Authors: Padavattan Kayla
Published: May 2022

My discussion of Karen McBride’s Crow Winter will focus on how reconnecting with tradition and ceremony heals Hazel Ellis and helps her to come to terms with the recent loss of her father. Specifically, she heals through participating in a sweat lodge ceremony, her interactions with Nanabush and in learning about the Seven Grandfather Teachings. Her participation in the sweat lodge ceremony connects her with her spirituality. Through her interactions with traditional medicines such as tobacco and cedar, Hazel learns to open up, helping her understand that she needs to confront her feelings of grief. Through her connection with Nanabush she becomes comfortable in navigating the Spirit World. By learning about the Seven Grandfather Teachings with a focus on bravery, she is able to make a life-changing decision to protect the sacredness of the land.  The novel teaches settler audiences and readers to understand the importance of land to Indigenous Peoples. Rather than look at it as property or something to be exploited, one needs to enter into a relationship with the land. Hazel makes evident that not only does land inform ways of knowing and being for Indigenous Peoples, but also that it guides people such as herself in healing journeys.
Dismantling Ethnic Notions Through Bildungsromane: An Examination of The Bluest Eye
Authors: Smith Sapphyre
Published: May 2022

The Bildungsroman, or “coming-of-age” narrative, has long been a staple of Western literature; however, as a genre whose protagonists are usually young white men or privileged white women, authors who want to tackle a protagonist that does not fit this narrow description are faced with a challenge: how do they navigate the arc of growing up in a genre that is built for white men, and therefore excludes them and their characters by definition? My paper explores one such author’s efforts to reclaim the genre, not by forcing her characters to follow the traditional arc, but by exploring the reasons they are unable to conform to it.

In her novel The Bluest Eye, Toni Morrison reinvents the genre by turning the individual arc of the Bildungsroman into the story of an African American community, interweaving multiple Bildungsromane to subvert dominant stereotypes of African-American people. In this paper, I juxtapose her novel with Marlon Riggs’ documentary, Ethnic Notions (1987) to reveal Morrison’s combative reinvention of the stereotypes Riggs investigates such as the “Black Mammy,” the “violent brute,” and the “pickaninny.” In doing so, she restores humanity and complexity to the one-dimensional caricatures of Blackness that have dominated Western thought and harmed Black people. By exploring Morrison’s novel, this paper hopes to reach beyond stereotypical depictions of Blackness and encourage the continued interrogation of its portrayals in our everyday lives as a mode of rehumanization and resistance to dominant racist ideologies.
ABA FORA DA MESINHA NA EQUOTERAPIA: PÚBLICO ATENDIDO COM TRANSTORNO DO ESPECTRO AUTISTA
Authors: Sarti Aline Giovana , Mota Claudia da Costa
Published: May 2022

RESUMO. A Equoterapia é um método de reabilitação e habilitação global do desenvolvimento (cognição, motora, integração sensorial, psicológica, fonoaudiológica e social), isto é biopsicossocial, na qual o cavalo é o co-terapeuta da atuação multiprofissional. Já a ciência da ABA foi baseada no Behaviorismo, especificamente na teoria de aprendizagem por experiências e, objetiva avaliar e intervir sob comportamentos disruptivos, problemáticos ou disfuncionais para assim possibilitar mudanças de tais comportamentos. O objetivo deste estudo foi associar o método Applied Behavior Analysis (ABA) a Equoterapia, utilizando de utilizando de uma visão humana no trabalho com sujeitos com Transtorno do Espectro Autista (TEA). Método: trata-se de um estudo qualitativo de levantamento teórico na qual não apresenta uma metodologia convencional, mas sim de levantamento bibliográfico e de experiências práticas da pesquisadora como equoterapeuta e psicóloga. Conclusão: A ABA pode ser utilizada na Equoterapia, associada a outras abordagens teóricas e metodológicas, considerando que na Equoterapia o olhar para o ser humano é global e por meio de uma variedade de perspectiva.
New perspectives of vancomycin monitoring
Authors: Morales Junior Ronaldo , Juodinis Vanessa , Reis Ilana , Faria Lucilia
Published: May 2022

Vancomycin is an antibiotic mainly used to treat infections caused by gram-positive bacteria. Currently, the monitoring of vancomycin treatment is carried out through the trough of plasma concentration, but the new studies and recommendations suggest the use of the ratio between the area under the plasma concentration curve and the minimum inhibitory concentration of the bacterium (AUC/MIC) for monitoring patients, especially in pediatrics due to the high variability of pharmacokinetic parameters in this population. The AUC/MIC of vancomycin can be determined using Bayesian software or by the trapezoid method with similar results and only practical differences. Comparative studies between monitoring by AUC/MIC and trough levels have shown better results of efficacy and safety in the use of vancomycin in those groups monitored by AUC/MIC and corroborate with the new recommendations.
Migración, tráfico y economías ilegales en las fronteras colombianas
Authors: Ramos Quintero Claudia Liliana
Published: May 2022

En el contexto colombiano, la migración y el tráfico irregular de migrantes por las fronteras han venido posicionándose desde 2017. Colombia, país expulsor por excelencia, pasa a convertirse en país de destino y tránsito, incorporándose a rutas nacionales e internacionales gracias a los nuevos corredores migratorios que siguen los grupos cri-minales y las redes de tráfico, los cuales conforman una de las tres eco-nomías ilegales más lucrativas. Esta investigación examina, a partir de diversas fuentes, las principales causas y dinámicas de la migración irregular, el tráfico de personas y las economías ilegales. Así mismo, analiza un delito que rompe el tejido social y debilita la identidad colectiva al convertir a las personas en mercancía, a través de relaciones económicas de oferta y demanda. En este sentido, se hace referencia a las legislaciones vigentes, pactos y declaraciones nacionales e internacionales.
Modelling the operation of gas storage in salt caverns: numerical approaches and applications
Authors: Jeannin Laurent , Myagkiy Andrey , Vuddamalay Aden
Published: May 2022

This paper examines numerical approaches to model operation of gas storage in salt caverns. The emphasis is on taking into account the thermal exchanges between the well, the cavern, and the rock mass, as well as the modelling of the volume losses of the cavern, while keeping the model fast, simple, and operationally usable. The use of this model in the context of monitoring storage operations is illustrated.
Práticas e crenças associadas ao desmame precoce do aleitamento materno exclusivo: uma revisão integrativa
Authors: Fernandes Daniele Cristina Alves , Fernandes Helder Matheus Alves , Barbosa Elane da Silva , Granjeiro Richardeson Fagner de Oliveira , Chaves Márcia Jaínne Campelo , Tenório Dayane Carla Duarte , Rocha Yatagan Moreira da , Vasconcelos Moisés Iasley Lima , Oliveira Filipe Monteiro de , Rocha Letícia Ellen Vieira
Published: May 2022

Objetivo: Discutir as práticas e crenças relacionadas ao desmame precoce no aleitamento materno exclusivo. Métodos: Trata-se de revisão integrativa, realizada nas bases de dados LILACS, SciELO, BVS e portal de periódicos CAPES/MEC, a partir dos seguintes descritores: amamentação, desmame precoce, lactente e aleitamento materno exclusivo. Resultados: Compuseram o corpus desta investigação 21 artigos, publicados entre os anos de 2014 a 2019. Para apresentar, sistematicamente, a análise dos dados, foram organizadas as seguintes categorias: Práticas populares; Aspectos diversos e, por fim, Crenças Populares. Identificou-se que as práticas e as crenças correlacionadas à lactação fazem parte do cotidiano há muitos séculos que acabam acarretando ao desmame precoce, como: introdução de outros tipos de alimentos, ideias equivocadas sobre o leite materno, que é insuficiente, ou que o bebê sente sede ou não quis aceitar. Considerações finais: Desse modo, tornam-se pertinentes mudanças na produção do cuidado em saúde no que tange à assistência ao ciclo gravídico-puerperal, o que sugere a inserção de determinantes socioculturais da genitora e dos familiares do lactente nesse processo de educação em saúde para o aleitamento materno exclusivo.
Evaluation of bone mineral density in children with type 1 diabetes: A cross-sectional case–control study
Authors: Kumar R. Akshay , Kumar C. G. Delhi , Sahoo Jayaprakash
Published: May 2022

Objectives:

To compare the bone mineral density (BMD) and vitamin D levels of children with type 1 diabetes (T1D) with normal children.

Material and Methods:

Children with T1D, aged 4–18 years, and age- and gender-matched healthy controls, were recruited. Children with chronic systemic disorders and those taking medications that impair BMD were excluded from the study. Dual-energy X-ray absorptiometry, vitamin D, intact parathyroid hormone, calcium, phosphorus, alkaline phosphatase, osteocalcin, and spot urine deoxypyridinoline crosslinks (Pyrilinks-D)/ creatinine ratio were estimated in both cases and controls.

Results:

Thirty-seven children with T1D with a mean age of 9.7 ± 2.1 years were enrolled and compared with controls. The bone mineral content (BMC) in cases was 24.5 g (20.3–30.6) and in controls 25.5 g (23.5–26.8) (P = 0.66) and BMD in cases was 0.68 ± 0.165 g/cm2 and in controls 0.69 ± 0.149 g/cm2 (P = 0.76). However, the prevalence of low BMD (BMD <-2 Z-score) was seen in only 3 (8%) cases (P – <0.001). Serum 25-hydroxyvitamin D [25(OH)D] levels were also lower in cases 14.1 ng/mL (12.05–14.75 ng/mL) as compared to controls 15.73 ng/mL (13.1–23.2 ng/mL) (P = 0.01). Thirty-three (89%) cases and 24 (64%) controls had low 25(OH)D levels (<20 ng/mL). There was no significant difference in the bone turnover markers between cases and controls.

Conclusion:

Children with T1D have similar BMD and lower vitamin D levels compared to healthy children.
Appendix 1: Auszüge aus einem von Frank Elstner mit Prof. Dr. Vladimir Prelog geführten Interview
Authors: Prelog Vladimir , Elstner Frank
Published: May 2022

No abstract.
Foundations of non-standard inferences for DLs with transitive roles
Authors: Brandt Sebastian , Turhan Anni-Yasmin , Küsters Ralf
Published: May 2022

Description Logics (DLs) are a family of knowledge representation formalisms used for terminological reasoning. They have a wide range of applications such as medical knowledge-bases, or the semantic web. Research on DLs has been focused on the development of sound and complete inference algorithms to decide satisfiability and subsumption for increasingly expressive DLs. Non-standard inferences are a group of relatively new inference services which provide reasoning support for the building, maintaining, and deployment of DL knowledge-bases. So far, non-standard inferences are not available for very expressive DLs. In this paper we present first results on non-standard inferences for DLs with transitive roles. As a basis, we give a structural characterization of subsumption for DLs where existential and value restrictions can be imposed on transitive roles. We propose sound and complete algorithms to compute the least common subsumer (lcs).
Multi-Task Deep Neural Networks for Ames Mutagenicity Prediction
Authors: Martínez María Jimena , Sabando María Virginia , Soto Axel J. , Roca Carlos , Requena-Triguero Carlos , Campillo Nuria E. , Páez Juan A. , Ponzoni Ignacio
Published: May 2022

The Ames mutagenicity test constitutes the most frequently used assay to estimate the mutagenic potential of drug candidates. While this test employs experimental results using various strains of Salmonella typhimurium, the vast majority of the published in silico models for predicting mutagenicity do not take into account the test results of the individual experiments conducted for each strain. Instead, such QSAR models are generally trained employing overall labels (i.e. mutagenic and non-mutagenic). Recently, neural-based models combined with multi-task learning strategies have yielded interesting results in different domains, given their capabilities to model multi-target functions. In this scenario, we propose a novel neural-based QSAR model to predict mutagenicity that leverages experimental results from different strains involved in the Ames test by means of a multi-task learning approach. To the best of our knowledge, the modeling strategy hereby proposed has not been applied to model Ames mutagenicity previously. The results yielded by our model surpass those obtained by single-task modeling strategies, such as models that predict the overall Ames label or ensemble models built from individual strains. For reproducibility and accessibility purposes, all source code and datasets used in our experiments are publicly available.
E-selective Semi-hydrogenation of Alkynes Under Mild Conditions by a Diruthenium Hydride Complex
Authors: Beek Cody Bernard , Killian Lars , Lutz Martin , Weingarth Markus , Asundi Arun , Sarangi Ritimukta , Klein Gebbink Robertus J. M. , Broere Daniël Laurens
Published: May 2022

Reacting the tBuPNNP expanded pincer ligand with two equiv of RuHCl(PPh3)3(CO) at high temperatures produces an insoluble air-stable complex, which was structurally characterized as [Ru2(tBuPNNP)H(μ-H)Cl(μ-Cl)(CO)2] using solid-state NMR, IR and X-ray absorption spectroscopies and follow-up reactivity. A reaction with KOtBu results in deprotonation of a methylene linker to produce a soluble complex featuring a partially dearomatized naphthyridine core. This enables metal-ligand cooperative activation of H2 analogous to the mononuclear analogue, [Ru(tBuPNP*)H(CO)]. In contrast to the mononuclear system, the bimetallic analogue produces an active catalyst for the E-selective semi-hydrogenation of alkynes under mild conditions (ambient temperature and pressure) with good functional group tolerance. Monitoring this reaction using 1H NMR spectroscopy for the hydrogenation of diphenylacetylene shows the intermediacy of Z-stilbene, which is subsequently isomerized to the E-isomer. Initial findings into the mode of action of this system are provided, including the spectroscopic characterization of a polyhydride intermediate and the isolation of a deactivated species with a partially hydrogenated naphthyridine backbone.
Development of Machine Learning Models to Predict a Chemical’s Anti-SARS-CoV-2 Activities
Authors: Ji Beihong , Wu Yuhui , Thomas Elena N , Edwards Jocelyn N , He Xibing , Wang Junmei
Published: May 2022

The COVID-19 pandemic, caused by the coronavirus SARS-CoV-2, has put global health systems at risk, leading to an urgent need for effective treatment for infection of this coronavirus. To accelerate the identification of novel drug candidates for COVID-19 treatment in the drug discovery process, we reported a series of ML-based models to accurately predict the anti-SARS-CoV-2 activities of screening compounds. Those models were trained and evaluated using the experimental data deposited in the COVID-19 OpenData Portal which is hosted by NCATS (https://ncats.nih.gov/expertise/covid19-open-data-portal). We explored 6 popular ML algorithms in combination with 15 molecular descriptors for molecular structures from 9 screening assays. Of note, 6 screening assays of the same datasets were also adopted by KC et al. to construct prediction models which were deployed in the REDIAL-2020 model suite (Nature Machine Intelligence, 3, 527–535, 2021). The impacts of ML algorithms and molecular descriptors on model performance were investigated. As a result, the model constructed using the k-nearest neighbors (KNN) method and the hybrid molecular descriptor, GAFF+RDKit, achieved the best performance. We evaluated the model performance on 28 drugs which have been applied in clinical trails of treating COVID-19. The overall performance of our developed models was better than REDIAL-2020. For the external CPE dataset, 79% of compounds were correctly predicted by using our model, significantly better than REDIAL-2020 (66.7%). For the external 3CL assay, the percentages of correct predictions by our predictors (38.1%) are not as high as REDIAL-2020 (61.9%). However, our models achieved more accurate predictions for the 100 druglike compounds selected as negative control. Furthermore, we reconstructed another 3CL model by utilizing the screen data from the study by Kuzikov, et al. The classification model achieved the best performance on the prediction of positive control, albeit its performance is lower than REDIAL-2020 on the prediction for the negative control. A web server (https://clickff.org/amberweb/covid-19-cp) was developed to enable users to forecast anti-SARS-CoV2 activities of arbitrary compounds. The web portal provides users a fast and reliable way to identify potential compound candidates for COVID-19 treatment, which highly reduces the time and cost of experiments on anti-SARS-CoV activity.
Heptagon-embedded π-Expanded Thieno- and N-Methylpyrrolo-pyridazines with Substantial Out-of-plane Dipole Moment
Authors: Hisada Masato , Shimizu Daiki , Matsuda Kenji
Published: May 2022

Herein we describe the synthesis and characterization of fully-fused tetraphenyl-thieno[3,4-d]pyridazine 1 and N-methylpyrrolo[3,4-d]pyridazine 2 with two embedded seven-membered rings. Owing to the incorporated heptagon, both of 1 and 2 exhibited Cs-symmetric saddle conformations in the solid state with mean plane deviation around 0.38 Å. π-Expanded thienopyridazine 1 showed a 1-D columnar packing along the b axis with net dipole moment aligning perpendicular to the b axis in the polar crystal system Pc. On the other hand, 2 formed a partially π-stacked brick-work structure in the crystal. In addition to the Cs-symmetric saddle conformations found in the crystals, DFT calculation found C2-symmetric twisted conformations of both 1 and 2 close in energy to the saddle conformations. The barrier of conformational interconversion was calculated to be 32 (1) and 31 kJ·mol−1 (2), and the interconversion occur fast even at −60 °C as evidenced by VT-NMR studies. While 1 and 2 have moderately curved structures, optical and electrochemical studies revealed effective π-conjugation over the fused diphenylene units, which is also supported by DFT calculation. As the result of the intrinsic large dipole moment of thieno- and pyrrolo-pyridazines and the notably curved structure, 1 (2) has a substantial out-of-plane dipole moment of 2.0 (3.3) D in the saddle conformations.
The role of lead precursors in driving competitive crystallization reactions during the formation of 2D perovskites
Authors: Antony Leo Sahaya Daphne , Grimaldi Gianluca , Helmbrecht Lukas , Weijden Arno van der , Schuringa Imme , Borchert Juliane , Ehrler Bruno , Noorduin Willem L. , Alarcon-Llado Esther
Published: May 2022

Two-dimensional (2D) lead halide perovskites are an exciting class of materials currently being extensively explored for both photovoltaics and optoelectronic applications. The ionic nature of these materials makes them ideal candidates for solution processing into both thin films and nanostructured crystals. However, a complete mechanistic description of 2D perovskite crystallization in solution is still missing due to the intricacy of process parameters and intermediates. Here, we investigate the role of different solid lead precursors (PbO2, PbI2, PbCO3) on the crystallization of pure-phase, n=1, Ruddleson-Popper 2D perovskite BA2PbI4, during a two-step drop-cast-based synthesis. While BA2PbI4 is formed in all cases, the nucleation and resulting morphology are strongly dependent on the choice of precursor, where the three lead precursors differ from each other in terms of their Pb-ion oxidation state, crystal structure, and material class. We use in-situ optical live imaging during synthesis to reveal clear differences in crystallization kinetics of the same 2D perovskite as a function of the lead precursor. We discern three competing mechanisms in the Pb-precursor for the formation of BA2PbI4: dissolution/complexation, BAI intercalation, and solid-state conversion. The differences in the oxidation state and solubility of the starting lead precursor in halide-rich solution play a key role in defining the crystallization pathway(s). This work demonstrates the importance of lead precursors in defining the nucleation and growth of perovskites thereby advancing the existing solution-processing techniques. Understanding how 2D perovskite crystals form in solution is key towards full control over their growth and optoelectronic properties, which will enable new types of physical phenomena and devices.
A Highly Stereoselective Claisen-Sakurai Approach to Densely Functionalized Cyclopentenols
Authors: Cook Matthew , Stankevich Ksenia
Published: May 2022

The formation of highly substitiuted cyclopentenols was developed using a Claisen-Sakurai reaction. Both elements of the reaction can be performed in a one-pot sequence that provides the corresponding cyclized products in high stereoselectivity. The stereochemical outcome is defined by a combination of Claisen stereospecificity and stereoelectronic effects in the Sakurai cyclization that promotes reactivity via a syn-SE’ antiperiplanar transition-state. This was determined by examination of the product stereochemistry and through detailed DFT analysis.
Conductivity enhancement within garnet-rich polymer composite electrolytes via the addition of succinonitrile
Authors: Vanita Vanita , Waidha Aamir Iqbal , Yadav Sandeep , Schneider Joerg J. , Clemens Oliver
Published: May 2022

All-solid-state lithium-ion batteries (ASSLIBs) are promising alternatives to conventional organic electrolyte-based batteries due to their higher safety and higher energy densities. Despite advantages, ASSLIBs suffer from issues like high charge transfer resistances due to the brittleness of the inorganic solid electrolyte and chemical instabilities at the lithium/electrolyte interface. Within this work, we investigate composite electrolytes based on garnet-type Li6.4La3Zr1.4Ta0.6O12 (LLZTO), polyethylene oxide (PEO) and lithium bis(trifluoromethanesulfonyl) imide (LiTSFI), prepared via a solvent free cryo-milling approach in contrast to conventional solvent mediated synthesis. Compositions ranging from polymer-rich to garnet-rich systems are investigated via X-ray diffraction, Raman spectroscopy and Fourier transform infrared spectroscopy (FT-IR) in order to determine the compatibility of the cryo-milling process towards membrane fabrication along with the possible chemical interactions between the composite membrane components. Electrochemical impedance spectroscopy (EIS) is used to study the role of ceramic to Polymer weight fraction on ionic conductivity. It is shown that the addition of succinonitrile (SCN) to the garnet-rich composite electrolytes can significantly improve the ionic conductivity compared to the SCN free composite electrolytes.
Increased CO2 affinity and adsorption selectivity in MOF-801 fluorinated analogues
Authors: Morelli Venturi Diletta , Notari Maria Sole , Bondi Roberto , Mosconi Edoardo , Kaiser Waldemar , Mercuri Giorgio , Giambastiani Giuliano , Rossin Andrea , Taddei Marco , Costantino Ferdinando
Published: May 2022

The novel ZrIV-based PerFluorinated Metal-Organic Framework (PF-MOF) [Zr6O4(OH)4(TFS)6] (ZrTFS) was prepared under solvent-free conditions using the commercially available tetrafluorosuccinic acid (H2TFS) as bridging ditopic linker. Since H2TFS can be seen as the fully aliphatic and perfluorinated C4 analogue of fumaric acid, ZrTFS was found to be isoreticular to zirconium fumarate (MOF-801). The structure of ZrTFS was solved and refined from X-ray Powder Diffraction data. Despite this analogy, the gas adsorption capacity of ZrTFS is much lower than that of MOF-801; in the former, the presence of bulky fluorine atoms causes a considerable windows size reduction. In order to have PF-MOFs with more accessible porosity, Post-Synthetic Exchange (PSE) reactions on (defective) MOF-801 suspended in H2TFS aqueous solutions were carried out. Despite the different H2TFS concentrations used in the PSE process, the exchanges yielded two mixed-linker materials of similar minimal formulae [Zr6O4(μ3-OH)4(μ1-OH)2.08(H2O)2.08(FUM)4.04(HTFS)1.84] (PF-MOF1) and [Zr6O4(μ3-OH)4(μ1-OH)1.83(H2O)1.83(FUM)4.04(HTFS)2.09] (PF-MOF2) (FUM2- = fumarate), where the perfluorinated linker was found to fully replace the capping acetate in the defective sites of pristine MOF-801. CO2 and N2 adsorption isotherms collected on all samples reveal that both CO2 thermodynamic affinity (isosteric heat of adsorption at zero coverage, Qst) and CO2/N2 adsorption selectivity increase with the amount of incorporated TFS2-, reaching the maximum values of 30 kJ mol-1 and 41 (IAST), respectively, in PF-MOF2. This confirms the beneficial effect coming from the introduction of fluorinated linkers in MOFs on their CO2 adsorption ability. Finally, solid-state density functional theory calculations were carried out to cast light on the structural features and on the thermodynamics of CO2 adsorption in MOF-801 and ZrTFS. Due to the difficulties in modelling a defective MOF, an intermediate structure containing both linkers in the framework was also designed. In this structure, the preferential CO2 adsorption site is the tetrahedral pore in the “UiO-66-like” structure. The extra energy stabilization stems from a hydrogen bond interaction between CO2 and a hydroxyl group on the inorganic cluster.
Extending and Automating Quantitative Microelectrode Voltammetry through an Oblate Spheroidal Coordinate Framework
Authors: Fenton, Jr. Alexis M. , Neyhouse Bertrand J. , Tenny Kevin M. , Chiang Yet-Ming , Brushett Fikile R.
Published: May 2022

Voltammetry is a ubiquitous electroanalytical method that can be used to help probe sustainable electrochemical technologies. When conducted with a microelectrode (radius ca. μm), voltammetry enables special interrogation of electrolyte solutions by minimizing distortions and enabling near-steady-state measurements, potentially unlocking in situ or operando analyses. Methodologies aimed to evaluate the behavior of redox-active species often leverage well-established, physically-grounded expressions that can be extended to examine electrolyte solutions under non-ideal conditions (e.g., signal convolution from multiple redox events) by simulating the entire voltammogram. Such models are typically framed in cylindrical coordinates, but leveraging oblate spheroidal coordinates can result in less cumbersome mathematical treatment. Here, we utilize this orthogonal coordinate system to develop and validate frameworks that can be used to derive closed-form steady-state—along with finite difference transient—microelectrode voltammogram models for single and sequential electron transfer mechanisms. We subsequently apply these steady-state models to estimate multiple features from simulated transient voltammograms and from nonaqueous electrolyte solutions containing N-[2-(methoxyethoxy)ethyl]phenothiazine, finding the framework is particularly adept at estimating the degree to which an electrolyte solution is charged (its “state-of-charge”) and remains intact (its “state-of-health”). Finally, we highlight potential extensions of this method towards advancing in situ or operando diagnostic methods.
Molecular Signatures of the Glass Transition in Polymers
Authors: Jin Tianyi , Coley Connor , Alexander-Katz Alfredo
Published: May 2022

The glass transition temperature (Tg) is one of the most fundamental properties of polymers. Tg is predicted as a sudden change in a “macroscopic” quantity (e.g. compressibility). However, for systems with “soft” glass transitions where the change is gradual it becomes hard to pinpoint precisely the transition temperature as well as the set of molecular changes occurring during this transition. Here, we introduce two new molecular signatures for the glass transition of polymers that exhibit clear changes as one approaches Tg: i) differential change of the probability distribution of dihedral angles as a function of temperature, and ii) the distribution of fractional of time spent in the different torsional states. These new signatures provide insights into the glass transition in polymers by directly exhibiting the concept of spatial heterogeneity and dynamical ergodicity breaking in such systems, as well as provide a key step to quantitatively obtain the transition temperature from molecular characteristics of the polymeric systems.
Inter/multiculturalismo e diversidade musical: algumas narrativas acadêmicas
Authors: Coutinho Paulo Roberto de Oliveira , Rocha Inês de Almeida
Published: May 2022

O artigo apresenta uma análise da produção acadêmica a partir de perspectivas teóricas e conceituais inter/multiculturais publicadas em dois periódicos especializados - a Revista da ABEM e o International Journal of Music Education - na última década. O principal foco de análise foi à consideração desse quadro teórico/conceitual como mote de diálogo interdisciplinar para discutir questões relacionadas às formas como a diversidade musical se manifesta nos discursos da referida produção. O levantamento das produções compreende o período de 2009 a 2019[1] nos respectivos periódicos.  Os resultados desta análise mostram que a diversidade musical/cultural se materializa de diferentes maneiras, resultando em diferentes respostas ao tratamento das diferenças culturais. Nas considerações, o estudo destaca a importância de construção de debates e reflexões sobre uma concepção de diversidade musical para além da perspectiva da pluralidade. Nessa ótica, este estudo aponta a necessidade de se considerar as interações e tensões culturais como fenômenos inerentes às ressignificações de saberes e conhecimentos a partir de diferentes expressões culturais.

Palavras-chave: Educação Musical; Diversidade Musical; Inter/multiculturalismo.

 

[1] O período citado decorre do fato deste levantamento bibliográfico ser material constitutivo de um recorte de um dos capítulos de tese de doutorado defendida em 2019.
Entre documentos e memórias: o acervo de escolas extintas do Estado do Rio de Janeiro
Authors: Sathler Alessandro , Avila Izabel Cristina Galiaço , Gonzaga Mário Jorge
Published: May 2022

O presente artigo tem como objetivo caracterizar o acervo de escolas extintas do estado do Rio de Janeiro, partindo da identificação e análise dos processos históricos e administrativos que lhe deram origem. A complexidade das relações sociais criou uma dinâmica de vida em que o acesso a determinados direitos e espaços sociais dependem, necessariamente, de documentos que comprovem a conclusão de etapas da educação escolar, justificando assim sua existência formal. O acervo fluminense surgiu da junção entre os arquivos dos estados da Guanabara e do Rio de Janeiro na década de 1970, contando hoje com cerca de 5 milhões de pastas individuais de alunos dispostas em mais de 3.200 escolas. Esse conjunto documental, organizado e gerido por legislação específica, engloba registros acadêmicos e institucionais que, para além de buscar garantir a emissão de certificados ou diplomas, descreve a história da educação por meio da preservação da memória cotidiana dos processos pedagógicos e institucionais. Pretende-se nesta pesquisa reconstruir o processo de formação desse acervo, descrevendo a partir daí sua composição, organização e finalidades. Para tanto será realizado um estudo qualitativo de caráter bibliográfico a partir de fontes primárias, bem como da literatura que trata do tema.
Arquivos e História da Educação (2ª parte)
Authors: Silva Alexandra Lima da , Vasconcellos Maria Celi Chaves
Published: May 2022

A Revista Caminhos da Educação: diálogos, culturas e diversidades  publica a 2ª parte do dossiê Arquivos e História da Educação, organizado pelas professoras Alexandra Lima da Silva e Maria Celi Chaves Vasconcelos, pesquisadoras e professoras do campo da História da Educação.
Examining the Impact of Project Management Methodology on Construction Project Success. Using Risk Management as a Mediator and Organizational Culture as a Moderator
Authors: Javaid Mahid , Sajid Muhammad , Masood Khansa , Khan Zeeshan
Published: May 2022

Purpose: The objective of this empirical study was to examine this relationship using 03 different dimensions of various elements of any Project management methodology i.e. having a comprehensive set of elements, supplementing missing elements & applying relevant elements, and assessing their impact on project success.

Design/Methodology/Approach:  Data is collected from 261 respondents from the construction industry of Punjab, Pakistan with the help of a research questionnaire. Partial Least squared-Structural Equation modeling is used to analyze the data through Smart PLS.

Findings: The results of this study indicate that all three dimensions have a significant and positive impact on project success. Furthermore, mediation by risk management and moderation by organizational culture is also found to be present in these relationships.

Implications/Originality/Value: These results implicate that by using relevant dimensions of various elements of project management methodology, the project success rate can be enhanced for construction projects.
INPUTS COST SENSITIVITY ANALYSES OF BETEL LEAF PRODUCTION: A STUDY ON SELECTED FARMERS AT THE DISTRICTS OF KUSHTIA-JHENIDAH IN BANGLADESH
Authors: Sabur Md. Abdus , Rahman Md. Mizanoor , Sina Md. Abu , Huda Md. Nazmul , Uddin Md. Kamal
Published: May 2022

The study aims to evaluate the inputs cost sensitivity of betel leaf production of selected farmers in Bangladesh. Purposively two districts like Kushtia and Jhenidah were chosen for study area. Both primary and secondary data were used for the purpose of the study. Primary data were collected from 120 farmers. For analyzing data 9 variables were used like Material cost, Labor, Land cost(Lease), Fertilizer, Insecticide, Irrigation Cost, Depreciation of Primary cost, Selling and Distribution cost, Other cost as input costs and one variable(Sales) was used as output variable. The analysis have been done by applying descriptive statistics, Cobb-Douglas production function and marginal physical productivity (MPP) to identify nature of production function and influential sensitive input costs. The summation of all regression co-efficient included in the model, ∑βi=1.35 indicated that the production function is in the state of increasing return to scale. The highest MPP value was found in other cost (64.95) followed by insecticide (3.22); selling and distribution cost (2.69); labor cost (1.25) and fertilizer (1.20) which are very sensitive inputs and have the strong influence on output variables.
HEALTH LITERACY AND TRAFFIC ACCIDENTS
Authors: Ardic Aykut
Published: May 2022

Aim: The aim of this study is to deconstruct the relationship between health literacy and traffic accidents. Methods: This study was conducted with volunteers who came to the Family Health Center between February 2022 and April 2022.
Volunteers were asked to fill in the sociodemographic data form, and the Latest Vital Signs Form (NVS). Results: According to the results of our study, the NVS score was found to be lower in those who had a traffic accident. The
NVS score of those who had a traffic accident was found to be lower at all levels of education compared to those who had not had a traffic accident. As the level of education increased, NVS scores increased. Conclusions: At least
one of the drivers is at fault in accidents that occur when two vehicles hit each other. It was observed that being involved in an accident in any way was associated with health literacy. The health literacy scale is a scale in
which we evaluate the reading comprehension and attention ability of people with NVS. Considering that drivers who have a good attention span, a high NVS score, and drive more cautiously, the education of individuals with low health
literacy in traffic accident prevention may be recommended.
Effect of dust storms on (GSM) signal north region of Libya
Authors: Braika Alameen  , Sabriya Alghennai Alfitouri  , Abdussalam Ali Ahmed
Published: May 2022

Propagation mechanisms are very complex and diverse, because of the separation between the receiver and the transmitter, attenuation (reduction or loss) of the signal strength occurs. Field study will be conducted in amid north region of Libya (Bani Walid), which has high wind speed, and high attenuation loss, desert climate, and frequent dust and sand storms. This phenomenon actually influenced on wireless communication systems (GSM signal), neither the effect of the humidity on the complex permittivity nor the antenna height on the visibility, where by its effect on both attenuation and cross-polarization constants in this region. Besides the expectation of different chemical analysis of the dust and sand. These samples were collected from five location, every location had one level and sand was collected from a height of 2m, collect the meteorological data for the region of this study, e.g. visibility, wind speed and relative humidity, and height of towers from Libyana technical station. The analysis of these samples were done in two laboratories, one in university of Tripoli (AL-Fateh University), and the second in the Industrial Research Center in Tripoli. In the analysis, we were looking for the chemical and physically composition, the chemical composition of dust and sand had been got to compute complex permittivity, density, and chemical and physical properties analysis for the samples. Determine equivalent diameter, particles-size distribution, and axes ratio for collected samples; determine equivalent diameter, particles-size distribution, and axes ratio for collected samples. Compute the attenuation loss and cross-polarization discrimination (XPD) change due to the effect of sand and dust storms on wireless communication systems (GSM signal) which coverage in the studied region.
Analytical method development and validation analysis for quantitative assessment of cypermethrin by HPLC procedure
Authors: Supraja B  , Giridhar C  , Venkata Lakshmi V  , VenkataSubba Naidu N
Published: May 2022

The precise, systematic, definite, particular, linear, exact and robust scientific method was developed and validated for the assay of Cypermethrin in Cypermethrin 25% EC Insecticide for Injection, USP 500 mg/vial. Presently utilized Cypermethrin 25 % EC Insecticide as a working standard having limit was 95% for method development and validation. The quantitative determination bring to accomplished by HPLC- Waters - Alliance 510 system equipped with UV/PDA detector. Methanol, Acetonitrile and water in the ratio (60:20:20 v/v/v) used as mobile phase and flow rate 1.0 ml / min. with 20 minutes run time. The detection was carried at 225 nm with Nucleosil C18 column (250 mm × 4.6 mm x 10 µm) and ambient column temperature was maintained. In this connection, method uses the 20 μl injection volume and diluent as a blank solution. The linearity of this method was found to be linear in the range of 50% to 150% of the working concentration and the range for the analytical method is 25 ppm to 75 ppm. The accuracy and precision of the method were within acceptable. The present developed HPLC method is found to be suitable. The analytical solution was found to be stable up to 48 Hrs at room temperature.
The role of manganese-substituting ions and oxygen nonstoichiometry in the formation of the manganites properties
Authors:   Astrakhan State University, Karpasyuk V. K. , Badelin A. G. ,   Astrakhan State University, Merkulov D. I. ,   Astrakhan State University, Eremina R. M. ,   The Kazan E.K. Zavoisky Physical-Technical Institute, Vagizov F. G. ,   Kazan Federal University, Estemirova S. Kh. ,   nstitute of metallurgy, Ural Division of RAS
Published: May 2022

Structural and magnetic characteristics of La0.7Sr0.3Mn0.957Fe0.05Zn0.05O3+γ and La0.7Sr0.3Mn0.957Fe0.05Mg0.05O3+γ manganites, in which the iron is Mossbauer isotope 57Fe, are investigated and compared. Ceramic samples were sintered in air at 1473 K. They were then exposed to heat treatments at 1223 K and various partial pressure of oxygen in the gas phase, which ensured the production of manganites with following values of non-stoichiometry index: γ = −0.005; 0.000; 0.007; 0.008 for Zn-containing manganites (ZnM), and γ = −0.022; 0.000; 0.002; 0.005 for Mg-containing manganites (MgM). All synthesized manganites have rhombohedral crystal structure. Mössbauer spectroscopy data correspond to Fe3+ (3d5) ions. Curie point and magnetization depend on γ nonmonotonically. ZnM have essentially higher values of magnetic parameters and narrowest temperature interval of “ferromagnetic-paramagnetic” transition as compared to MgM. Their structure is considered as more homogeneous, which corresponds to lower value of quadrupole splitting of Mössbauer spectra. The results obtained indicate that different effect of Zn2+ and Mg2+ ions on electromagnetic characteristics of manganites is mainly determined by the configuration of their electron shells (3d10 and 2p6, correspondingly).
MOLECULAR-GENETIC CHARACTERIZATION OF HAPLOID SUGAR BEET LINES
Authors: Nalbandyan А. А. , Fedulova T. P. , Torop Е. А. , Tkachenko O. V. , Duvanova T. N.
Published: May 2022

Aim of the investigations is to carry out molecular-genetic study of sugar beet haploid plants-regenerants obtained by direct regeneration under in vitro culture. Results of these sugar beet lines’ molecular evaluation according to five microsattelite loci (SSR-markers – Unigenes:  24552, 14805, 16898, 22373 and 27833) and three minisattelites (TRs). As a result of the studies, experimental data characterizing initial sugar beet lines according to these molecular-genetic markers and allowing their clear differentiation have been obtained. Genetical distances (Euclidean) between the studied genotypes have been determined. The obtained sugar beet microclones have been clustered, and unique DNA-profiles for these breeding individuals have been made. From the results of the conducted molecular-genetic analysis of haploid plants-regenerants, it has been determined that DNA-markers of sugar beet mitochondrial genome belonging to the family of TRs minisatellites (TR1 and TR3) allow high-reliable identification of microclonal plants as MS and O-type forms. It has been revealed that plants-pollinators (sterility maintainers) of O-type are characterized by presence of DNA-amplicons: 700 bp in length when using the primer TR1 and 500 bp in length when using the primer TR3. The fragments of 400 bp are typical of MS plants-regenerants.
THE STUDY OF INTRODUCED RASPBERRY VARIETIES IN THE ORYOL REGION CONDITIONS
Authors: Ozherel'eva Z. E. , Lupin М. V.
Published: May 2022

The work was carried out on the basis of the laboratory of physiology of resistance of fruit plants at VNIISPK in 2019-2021. Scottish cultivars Glen Ample, Glen Lyon and Glen Magna; English cultivars Joan J and Octavia and Polish cultivar Laszka were studied. The introduction of new cultivars should be accompanied by a characteristic not only of their productivity, but primarily of winter hardiness. We analyzed the winter hardiness of introduced raspberry cultivars in the field and laboratory conditions. By modeling the main components of winter hardiness, the stability potential of experimental raspberry cultivars was revealed. In the field, according to the results of three–year studies, frost-resistant cultivars Glen Ample, Glen Lyon, Glen Magma, Laszka were isolated (damage to the buds and tissues of annual shoots no more than 2.0 points) at the level of the control cultivar. According to the results of artificial freezing, Glen Ample, Glen Magma and Laszka were characterized by the greatest resistance potential for the main components of winter hardiness. Biological accounting was applied when studying the cultivar characteristics of the crop load. A number of fruit-bearing shoots, number of berries from one shoot and bush, the size of berries, as well as the biological yield from one shoot and bush were determined. Glen Ample with very large berries (6.1 g) was identified. The high actual yield was shown by Glen Ample, Glen Magma, Glen Lyon, Laszka (above 15 t/ha). As a result, promising introduced raspberry varieties Glen Ample, Glen Magma, Laszka were identified for further breeding and production cultivation in the conditions of the Orel region.