bluuebunny/crossref_metadata_2025_split huggingface dataset:
O Modelo e-ARQ Brasil e os Sistemas de Informações Utilizados pelas Instituições Federais de Ensino no País
Authors: Costa Jaques Charles Silva da , Souza Cristina Gomes de 
Published: July 2021

<p dir="ltr"><span>A estratégia de governo eletrônico do Brasil possui como um dos seus objetivos adotar preferencialmente a implantação do Sistema Eletrônico de Informações (SEI) nas Instituições Federais de Ensino (IFES) como plano de inovação e de modernização das instituições e das políticas de gestão de documentos. Todavia, essa estratégia de inovação e de modernização apresenta desafios, tendo em vista que esse sistema não atende aos Requisitos para Sistemas Informatizados de Gestão Arquivística de Documentos (e-ARQ Brasil). Dentro desse contexto, o estudo tem como objetivo identificar e comparar quais sistemas informatizados de informações utilizados pelas IFES estão em conformidade com o e-ARQ Brasil por intermédio da aplicação do método </span><span>Survey</span><span>. Os resultados desse método exibem quais sistemas estão de acordo com o e-ARQ Brasil. </span></p><div><span><br /></span></div>
O Gesto Musical nos 2 Momentos Nordestinos para piano de Calimério Soares
Authors: Hartmann Ernesto Frederico 
Published: July 2021

<p><strong>RESUMO: </strong>Investigo neste trabalho o Gesto Musical, conceito elaborado por Robert Hatten e suas relações com a corporalidade e o significado na obra <em>2 Momentos Nordestinos (1981) </em>do compositor mineiro Calimério Soares. Após o reconhecimento das Tópicas Nordestinas presentes na obra, assim como os Gestos Musicais compostos por essas mesmas Tópicas, discute-se as suas implicações e como elas interagem com o processo composicional. Conclui-se que os Gestos Musicais primordiais de ataque e de técnica expandida deflagram e sustentam não só os processos de produção da forma, mas, sobretudo, as incursões textuais sugestivas do nacionalismo inscritas no título.</p><p><strong> </strong></p>
Genetic consequences of habitat fragmentation in a perennial plant Trillium camschatcense are subjected to its slow‐paced life history
Authors: Tsuzuki Yoichi , Sato Mitsuhiko P. , Matsuo Ayumi , Suyama Yoshihisa , Ohara Masashi 
Published: July 2021

AbstractMany wild populations are suffering from the loss of genetic diversity caused by habitat fragmentation, while the degree of diversity loss differs among species and populations based on their life history characteristics. Trillium camschatcense, an understory perennial plant, has undergone intensive habitat fragmentation in the Tokachi region, Hokkaido, Japan. Although demographic deteriorations, such as reduced seed production, were already reported, genetic consequences of fragmentation have not been studied with reference to its life history. Here, we examined how life history events (e.g., growth and reproduction) and the stochasticity therein influence genetic diversity in two (each large and small) fragmented T. camschatcense populations. Genetic diversity was evaluated using genome‐wide 2,008 single nucleotide polymorphisms (SNPs). In the small population, genetic diversity of newly germinated seedlings was significantly lower than that of matured life history stages, and effective number of breeders (Nb) was smaller than that of the large population. Simulations using a matrix population model showed that the diversity loss at seedlings is caused by genetic drift during reproduction, which was intensified by smaller Nb. Besides, simulations using randomly perturbed transition matrices suggested that stasis at juvenile stages, which is a common characteristics of T. camschatcense, maintains genetic diversity by buffering stochastic decrease, possibly contributing to population viability. While previous studies showed the importance to facilitate reproduction and recruitment for demographic recovery, this study highlighted the crucial roles of juvenile survival in terms of genetic diversity for the conservation of fragmented T. camschatcense populations in the Tokachi region.
School bullying before and during COVID‐19: Results from a population‐based randomized design
Authors: Vaillancourt Tracy , Brittain Heather , Krygsman Amanda , Farrell Ann H. , Landon Sally , Pepler Debra 
Published: July 2021

AbstractWe examined the impact of COVID‐19 on bullying prevalence rates in a sample of 6578 Canadian students in Grades 4 to 12. To account for school changes associated with the pandemic, students were randomized at the school level into two conditions: (1) the pre‐COVID‐19 condition, assessing bullying prevalence rates retrospectively before the pandemic, and (2) the current condition, assessing rates during the pandemic. Results indicated that students reported far higher rates of bullying involvement before the pandemic than during the pandemic across all forms of bullying (general, physical, verbal, and social), except for cyber bullying, where differences in rates were less pronounced. Despite anti‐Asian rhetoric during the pandemic, no difference was found between East Asian Canadian and White students on bullying victimization. Finally, our validity checks largely confirmed previous published patterns in both conditions: (1) girls were more likely to report being bullied than boys, (2) boys were more likely to report bullying others than girls, (3) elementary school students reported higher bullying involvement than secondary school students, and (4) gender diverse and LGTBQ + students reported being bullied at higher rates than students who identified as gender binary or heterosexual. These results highlight that the pandemic may have mitigated bullying rates, prompting the need to consider retaining some of the educational reforms used to reduce the spread of the virus that could foster caring interpersonal relationships at school such as reduced class sizes, increased supervision, and blended learning.
Sub‐Thermionic Negative Capacitance Field Effect Transistors with Solution Combustion‐Derived Hf0.5Zr0.5O2
Authors: Pujar Pavan , Cho Haewon , Gandla Srinivas , Naqi Muhammad , Hong Seongin , Kim Sunkook 
Published: July 2021

AbstractThe fabrication of Hf0.5Zr0.5O2‐ferroelectric negative capacitor using solution combustion is presented for the first time. The starting materials used for the solution combustion to form equimolar Hf0.5Zr0.5O2 are to act as both combustible elements and cation sources. Jain's method, which is used for estimating the stoichiometric quantities of precursors in propellant chemistry, has also been modified and applied. The conventional assumption for this method that molecular oxygen does not take part in the reaction is refuted and stoichiometric combustion in the presence of molecular oxygen is proposed. This reaction is followed by post‐rapid thermal processing to stabilize the metastable, non‐centrosymmetric orthorhombic phase. The thin film stacks, Hf0.5Zr0.5O2/HfO2, are used to achieve sub‐thermionic swing (forward sweep: 25.42 ± 8.05 mV dec−1, reverse sweep: 42.56 ± 4.87 mV dec−1) in MoS2 negative capacitance field effect transistors with a hysteresis of ≈40 mV at 1 nA, resulting in ultra‐low‐power operation.
Swing‐Structured Triboelectric–Electromagnetic Hybridized Nanogenerator for Breeze Wind Energy Harvesting
Authors: Lu Pinjing , Pang Hao , Ren Jie , Feng Yawei , An Jie , Liang Xi , Jiang Tao , Wang Zhong Lin 
Published: July 2021

AbstractWind energy is one of the most promising renewable energy sources, but harvesting low frequency breeze wind energy is hardly achieved using traditional electromagnetic generators (EMGs). Triboelectric nanogenerators (TENGs) provide a new approach for large‐scale collection of distributed breeze wind energy (usually 3.4–5.4 m s−1). Herein, by coupling the TENG and EMG, a swing‐structured hybrid nanogenerator with improved performance and durability is designed. The dielectric brush and air gap designs can minimize the material wear and continuously supply the tribo‐charges. Under external triggering, systematic comparisons are made about the output characteristics of TENG and EMG. The rectified peak power and average power of TENG are respectively, 60 and 635 times higher than those of EMG at moderate coil turn numbers, showing that TENG is much more effective than EMG for harvesting low‐frequency distributed energy (high entropy energy). Furthermore, the hybrid nanogenerator and array device are hung on tree branches to demonstrate the effective harvesting of breeze wind energy, delivering total rectified peak power densities of 2.07 and 1.94 W m–3 for single and array devices, respectively. The applications of powering portable electronics reveal the huge prospects of hybrid nanogenerator in self‐powered environmental monitoring toward forest/park fire warning systems.
Tuning Damping and Magnetic Anisotropy in Ultrathin Boron‐Engineered MgO/Co–Fe–B/MgO Heterostructures
Authors: Lourembam James , Khoo Khoong Hong , Qiu Jinjun , Xie Huiqing , Wong Seng Kai , Yap Qi Jia , Lim Sze Ter 
Published: July 2021

AbstractNanometer‐thick Co–Fe–B/MgO based structures have been widely accepted as the preferred system for immediate and long‐term goals in magnetic random access memory (MRAM) devices because of excellent spin‐torque efficiency and promise for high‐density MRAM. To realize next‐generation ultra‐low‐power MRAM, further lowering of power consumption in these structures is a crucial ongoing effort. Gilbert damping is one critical material parameter toward lowering energy consumption but is traditionally large (≈10−2) in these Co–Fe–B/MgO systems. Here, Gilbert damping of (1.3 ± 0.3) × 10−3 from a perpendicular double Co–Fe–B/MgO interface system engineered at different boron compositions is reported. Remarkably, this value is achieved with ≈1 nm of Co–Fe–B thickness while maintaining magnetic anisotropy of 0.4 Merg cc−1. An unusual damping trend that scales with layer thickness in high‐boron content films established from both experiments and first‐principles calculations is reported.
The mechanical and thermal properties of graphitic carbon nitride (g‐C3N4)‐based epoxy composites
Authors: Baghdadi Yasmine N. , Sinno Jihad , Bouhadir Kamal , Harb Mohammad , Mustapha Samir , Patra Digambara , Tehrani‐Bagha Ali R. 
Published: July 2021

AbstractNumerous ways to reinforce epoxy resin and improve its thermomechanical properties have been attempted using organic and inorganic nanoparticles. In this paper, graphitic carbon nitride (g‐C3N4) nanoparticles were synthesized and used to improve the mechanical properties and thermal stability of epoxy composites. The g‐C3N4 was synthesized from cheap melamine powder using a simple one‐step thermal treatment, then was used to reinforce the resin at different weight percentages (wt%). X‐ray diffraction, scanning electron microscopy (SEM), and Fourier infrared spectroscopy were used to characterize the g‐C3N4 and ensure its successful synthesis by studying the changes in its crystal structure, morphology, and chemical structure. The filler was dispersed in the resin using a combination of ultrasonication and high shear mixing. The results showed that the mechanical properties were optimum when 0.5 wt% g‐C3N4 was used. The tensile strength and fracture toughness of the resulting epoxy composite improved by 21.8% and 77.3%, respectively. SEM was used to investigate the morphologies of cracks formed in epoxy composite specimens after the tensile testing. The SEM micrographs of the fracture surface showed a transition from a brittle to a rough morphology, signifying the enhancement in the composites' toughness. Thermogravimetric analysis showed a good improvement in degradation temperature of up to 8.86% while dynamic mechanical analysis showed that the incorporation of g‐C3N4 did not affect the material's glass transition temperature.
A Review on Experimental Identification of Active Sites in Model Bifunctional Electrocatalytic Systems for Oxygen Reduction and Evolution Reactions
Authors: Hou Shujin , Kluge Regina M. , Haid Richard W. , Gubanova Elena L. , Watzele Sebastian A. , Bandarenka Aliaksandr S. , Garlyyev Batyr 
Published: July 2021

AbstractEfficient electrocatalysis of the oxygen reduction (ORR) and evolution (OER) reactions is essential in numerous renewable energy conversion systems, such as fuel cells, metal‐air batteries, and water electrolyzers. Design and optimization of electrocatalytic materials for such systems primarily rely on understanding the nature of active centers on the catalyst surface. This review focuses on several important aspects of the experimental identification of active sites on various model bifunctional ORR/OER electrocatalytic surfaces. Applications of the state‐of‐the‐art experimental techniques are analyzed. In addition, approaches to investigate and understand the influence of some supporting electrolyte components on the ORR and OER activities are discussed.
Computational fluid dynamic characterization of vertical‐wheel bioreactors used for effective scale‐up of human induced pluripotent stem cell aggregate culture
Authors: Dang Tiffany , Borys Breanna S. , Kanwar Shivek , Colter James , Worden Hannah , Blatchford Abigail , Croughan Matthew S. , Hossan Tareq , Rancourt Derrick E. , Lee Brian , Kallos Michael S. , Jung Sunghoon 
Published: July 2021

AbstractBioreactor‐based processes are the method of choice for efficient expansion of cells in a controlled setting. However, induced pluripotent stem cells (iPSCs) have proven to be extremely sensitive to the bioreactor hydrodynamic environment, making the use of suspension bioreactors to produce quality‐assured cells at clinical and commercial scales very challenging. The PBS vertical‐wheel (VW) bioreactor combines radial and axial flow components to produce uniform hydrodynamic force distributions, making it a promising platform to overcome the scale‐up challenges associated with iPSCs. In this study, hydrodynamic characterization through computational fluid dynamics modelling of VW bioreactors was performed. Analysis of these models proved that important volume average hydrodynamic variables could be maintained throughout scale‐up from the 0.1 L to the 15 L VW bioreactor scale. Each bioreactor scale (0.1, 0.5, 3, and 15 L) was modelled at a variety of agitation rates, leading to the generation of scale‐up correlation equations. These equations allow operators to define a working range of hydrodynamic variables at one scale and calculate the corresponding agitation rates at other modelled scales. A suggested operating range of agitation rates was determined for the successful culture of iPSCs in the VW bioreactor at each scale, corresponding to constant volume average energy dissipation rate. Agitation rates from the 0.1 and 0.5 L VW bioreactor scale were experimentally tested to biologically validate the suggested range. High cell‐fold expansion, healthy aggregate morphology, growth, and uniformity were demonstrated for all conditions tested within the suggested working range.
Construction of Self‐Reporting Biodegradable CO2‐Based Polycarbonates for the Visualization of Thermoresponsive Behavior with Aggregation‐Induced Emission Technology†
Authors: Wang Molin , Wang Enhao , Cao Han , Liu Shunjie , Wang Xianhong , Wang Fosong 
Published: July 2021

Main observation and conclusionThermoresponsive polymers with simultaneous biodegradability and signal “self‐reporting” outputs that meet for advanced applications are hard to obtain. To address this issue, we developed fluorescence signal “self‐reporting” biodegradable thermoresponsive polycarbonates through the immortal copolymerization of CO2 and oligoethylene glycol monomethyl ether‐functionalized epoxides in the presence of hydroxyl‐modified tetraphenylethylene (TPE‐OH). TPE‐OH was used as chain transfer agent to afford well‐defined polycarbonates with controlled molecular weight (6000—17000 g·mol–1) and aggregation‐induced emission characteristics. Through temperature‐dependent fluorescence intensity study, low critical solution transition of TPE‐labeled polycarbonates were determined and the fine details of thermal‐induced phase transition process were monitored. Further research indicated that temperature‐controlled aggregation and dissociation of TPE moieties are the main reason for fluorescence intensity variations. We anticipate that this work could offer a method to visualize the thermal transition process of thermoresponsive polycarbonates and broaden their application fields as smart materials.
Trifunctionalization of Aryl Iodides with Two Distinct Nitrogen and Carbon Electrophiles by Palladium/Norbornene Catalysis
Authors: Wang Jing , Wang Hui , Wang Zihan , Li Linqiang , Qin Cheng , Luan Xinjun 
Published: July 2021

Main observation and conclusionHerein, we report a highly chemo‐ and regioselective vicinal trifunctionalization of aryl iodides by palladium/norbornene (Pd/NBE) catalysis. The key feature of this new method is the introduction of two distinct nitrogen and carbon electrophiles, with a large gap in reactivity, for ortho‐unsubstituted aryl iodides via an intermolecular and intramolecular C―H functionalization, respectively. Eight types of ipso terminations can be coupled with both ortho‐amination and ortho‐alkylation, affording a variety of polysubstituted benzoheterocyclic scaffolds. Silicon‐tethered substrates can lead to polyfucntional arenes via a single‐step operation. Noteworthy, these products exhibit full‐color‐tunable strong fluorescence emissions with large Stokes shifts, and product 7r can serve as a fluorescent probe to specifically target lysosome in living cells.
Health‐related quality of life among colorectal cancer survivors of diverse sexual orientations
Authors: Boehmer Ulrike , Ozonoff Al , Winter Michael , Berklein Flora , Potter Jennifer , Hartshorn Kevan L. , Ward Kevin C. , Ceballos Rachel M. , Clark Melissa A. 
Published: July 2021

BackgroundThe purpose of this study was to examine the health‐related quality of life of sexual minority survivors in comparison with heterosexual survivors.MethodsFour hundred eighty eligible survivors participated in a telephone survey that measured survivors' outcomes, which consisted of physical and mental quality of life and self‐rated fair or poor health. These survivors were diagnosed with stage I, II, or III colorectal cancer an average of 3 years before the survey and were recruited from 4 cancer registries. Using forward selection with generalized linear models or logistic regression models, the authors considered 4 domains—personal factors, environmental factors, health condition characteristics, and body function and structure—as correlates for each survivorship outcome.ResultsThe authors found that unadjusted physical quality of life and self‐rated fair/poor health were similar for all survivors. Sexual minority survivors had poorer unadjusted mental quality of life in comparison with heterosexual survivors. After adjustments for covariates, this difference was no longer statistically significant. Three domains (personal factors, health condition characteristics, and body function and structure) explained colorectal cancer survivors' fair/poor health and 46% of the variance in physical quality of life, whereas 56% of the variance in mental quality of life was explained by personal factors, body function and structure, and environmental factors.ConclusionsThis study has identified modifiable factors that can be used to improve cancer survivors' quality of life and are, therefore, relevant to ongoing efforts to improve the survivorship experience.
The impact of the social construct of race on outcomes among bacille Calmette‐Guérin‐treated patients with high‐risk non‐muscle–invasive bladder cancer in an equal‐access setting
Authors: Lawler Corinne , Gu Lin , Howard Lauren E. , Branche Brandee , Wiggins Emily , Srinivasan Aditya , Foster Meagan L. , Klaassen Zachary , De Hoedt Amanda M. , Gingrich Jeffrey R. , Theodorescu Dan , Freedland Stephen J. , Williams Stephen B. 
Published: July 2021

BackgroundThe objective of this study was to describe bladder cancer outcomes as a function of race among patients with high‐risk non–muscle‐invasive bladder cancer (NMIBC) in an equal‐access setting.MethodsA total of 412 patients with high‐risk NMIBC who received bacille Calmette‐Guérin (BCG) from January 1, 2010, to December 31, 2015, were assessed. The authors used the Kaplan‐Meier method to estimate event‐free survival and Cox regression to determine the association between race and recurrence, progression, disease‐specific, and overall survival outcomes.ResultsA total of 372 patients who had complete data were included in the analysis; 48 (13%) and 324 (87%) were Black and White, respectively. There was no difference in age, sex, smoking status, or Charlson Comorbidity Index by race. White patients had a higher socioeconomic status with a greater percentage of patients living above the poverty level in comparison with Black patients (median, 85% vs 77%; P < .001). A total of 360 patients (97%) received adequate induction BCG, and 145 patients (39%) received adequate maintenance BCG therapy. There was no significant difference in rates of adequate induction or maintenance BCG therapy according to race. There was no significant difference in recurrence (hazard ratio [HR], 1.53; 95% confidence interval [CI], 0.64‐3.63), progression (HR, 0.77; 95% CI, 0.33‐1.82), bladder cancer–specific survival (HR, 1.01; 95% CI, 0.30‐3.46), or overall survival (HR, 0.97; 95% CI, 0.56‐1.66) according to Black race versus White race.ConclusionsIn this small study from an equal‐access setting, there was no difference in the receipt of BCG or any differences in bladder cancer outcomes according to race.
Breast health awareness campaign and screening pilot in a Kenyan County: Findings and lessons
Authors: Mwenda Valerian , Bor Joan‐Paula , Gitungo Hannah , Kirika Lydia , Njoroge Richard , Mugi Beatrice , Ojuka Daniel , Nyangasi Mary 
Published: July 2021

AbstractBackground and AimBreast cancer is the leading cancer in terms of incidence in Kenya. We conducted a breast cancer awareness and screening pilot to assess feasibility of rolling out a national screening program in Kenya.MethodsConducted in Nyeri County during October–November 2019, the pilot had three phases; awareness creation, screening (clinical breast examination and/or imaging) and final evaluation (post‐screening exit interviews and retrospective screening data review). Descriptive statistics on awareness, screening process and outputs were derived.ResultsDuring the pilot, 1813 CBE, 217 breast ultrasounds and 600 mammograms were performed. Mammography equipment utilization increased from 11% to 83%. Of 49 women with suspicious lesions on mammography, only 22 (44.9%) had been linked to care 4 months after the campaign. Of 532 exit interview respondents; 95% (505/532) were ≥35 years of age; 80% (426/532) had been reached by the awareness campaign. Majority (75% [399/532]) had received information from community health volunteers; 68% through social groups. Majority (79% [420/532]) felt the campaign had changed their behavior on breast health. Although 77% (407/532) had knowledge on self breast examination (SBE); only 13% practiced monthly SBE. More than half (58% [306/532]) had previously undertaken a CBE. Approximately 70% (375/528) were unaware of mammography before the pilot; 86% (459/532) had never previously undertaken a mammogram. Fifty‐five percent (293/532) of respondents had screening waiting times of >120 min.ConclusionCommunity health workers can create breast cancer screening demand sustainably. Adequate personnel and effective follow‐up are crucial before national roll‐out of a breast cancer screening program.