bluuebunny/crossref_metadata_2025 huggingface dataset:
Relationship of inflammatory mediators and sex-related parameters in Jordanian adult men patients with Covid-19
Authors: Al-Bashiti Amneh , Ahmed Khaled , Alqaisi Khalid
Published: April 2022

Background: Recent epidemiological data suggest that Co - ro navirus disease 2019 (COVID-19) has a gender predisposition, with men being more seriously affected than women. Furthermore, older men accounting for most deaths. Therefore, this study aimed to investigate the serum testosterone, inhibin B, intrleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-a) levels in different age groups of Jordanian males with SARS-CoV2 infection and to evaluate the correlation of these markers in male patients with COVID-19. Methods: This study was performed on 157 selected individuals divided into two groups; COVID-19 patients and healthy controls. The participants of each group were further divided into two subgroups based on the age (20-50 years and 51-80 years age groups). The biochemical tests that were performed in this research are testosterone, inhibin-B, TNF-a, and IL-6. Results: The levels of IL-6 were significantly higher in COVID-19 patients than healthy individuals (7.63 ± 6.30 vs. 5.54 ± 2.10, P=0.006). Similarly, the difference between the levels of TNF-a in the study groups were statistically significant (P=0.001). The mean testosterone levels in COVID-19 patients and healthy controls were 1.53 ± 1.24 and 3.87 ± 1.44, respectively (P<0.001), whereas the mean inhibin B levels in COVID-19 patients (54.29 ± 7.33) were lower than in healthy controls (64.14 ± 37.66) with P = 0.011. TNF-a was significantly and positively correlated with age (r = 0.263, P=0.018) and IL-6 (r = 0.245, P=0.027). Inhibin B had a significant, but negative correlation with TNF-a (r = -0.326, P = 0.003). Conclusions: It can be concluded that most men seeking medical attention with symptomatic COVID-19 had low testosterone and inhibin B levels with increased both IL-6 and TNF-a, which are independent of age conforming the deleterious effects of SARS-CoV-2 infection on testicular function and immune response induction.
Influence of seed pre-treatment and temperatures during germination of four seed lots of Festulolium
Authors: Stanisavljević Rade , Štrbanović Ratibor , Poštić Dobrivoj , Tabaković Marijenka , Đokić Dragoslav , Beković Dragoljub , Milenković Jasmina
Published: April 2022

A species called Festulolium was created in the middle of the last century by crossing two genuses: Lolium and Festuca. This was followed by a period of research on Festulolium from the aspect of genetics and breeding, seed production, cultivation, technology and use. We conducted various pre-treatment impact studies on Festulolium seeds: i) cooling at 5-7 o C for 3 days, ii) application of KNO3 on seed germination medium, and the third pre-treatment was control, without pre-treatment (iii). After pre-treatment (i, ii, iii), seed germination have examined at the following temperature regimes (provided by the seed quality regulations): 20 o C (dark); alternately 20o C/ 30o C (light /dark); and 30 o C (dark). The tests were performed on four seed lots of the variety Peron, in four replicates. The germination temperature of 30 o C reduced germination and increased dead seed and abnormal germination in all pre-treatments. The variant without the application of pre-treatment had a significantly lower overall germination in the assessment of Festulolium seed quality. Seed lots showed a high influence on the Festulolium seed quality.
The changes in seed quality of selected pepper varieties in three years
Authors: Živković Ivana , Đorđević Radiša , Adžić Slađan , Ugrinović Milan , Poštić Dobrivoj , Štrbanović Ratibor , Damnjanović Jelena
Published: April 2022

Pepper (Capsicum annuum L.) as a commercial species includes a large number of different varieties and is one of the most popular vegetables around the world. Changes in the quality of the seeds of autochthonous varieties of pepper seeds: Palanačko Čudo, Župska Rana, and Kobra were monitored in three years (2019-2021). It was noticed that the slightest difference in germination was obtained with the cultivar Palnačko Čudo (p>0.05) in three years. The Župska Rana had the best germination in 2019 (95%) compared to Palnačko Čudo and Kobra (p<0.05). The germination energy of Župska Rana is significantly higher compared to other selected varieties, 89% (p<0.05). There was a significant decrease in total germination in 2020. compared to 2019. (p<0.05) and amounted to 83%; accordingly, the germination energy decreased. No phytopathogenic fungi were detected in the Župska Rana sample. Total germination and energy decreased significantly compared to the previous two years (p<0.05). During the analysis of quality parameters in 2021, the slightest change in quality was observed in the variety Palanačko Čudo, including germination energy and moisture. A significant decrease in the germination of Župska Rana was noticed during the period 2019-2021. The lowest percentage of phytopathogenic fungi in the three years was detected in Župska Rana.
A moda e a decolonialidade: encruzilhadas no sul global
Authors: Casarin Carolina , Rosa Júnior João Dalla , Santos Heloisa , Costa Carla Aparecida , Medrado Michelle
Published: April 2022

O artigo apresenta um debate teórico sobre as ideias que dialogam com a perspectiva decolonial aplicada à moda, assim como trazer os desenvolvimentos teóricos arrolados no contexto do Sul global. Para tanto, emprega-se um conjunto de autores da área de moda que vem, desde meados dos anos 1990, realizando uma crítica importante a determinados conceitos que formam a base de reflexão da disciplina, como é o caso da própria noção de moda. Assim, o artigo tem o objetivo de questionar o sistema de autorização da moda e o pressuposto de que ela seria um exclusivo ocidental. A crítica se direciona à matriz colonial de pensamento que produz e reproduz uma divisão binária entre os povos, submetidos à classificação que os opõe entre “com moda” ou “sem moda”.
Certification of Standard Reference Material 114r Portland cement
Authors: Stutzman Paul , Votri Eduarda , Toman Blaza
Published: April 2022

The SRM 114 series for portland cement fineness has been provided by NIST since 1934 for use in calibrating instruments for measuring fineness characteristics of portland cement and other powdered construction materials. SRM 114r is the latest of this series providing certified values for cement fineness by Blaine apparatus, + 45 ?m (No. 325) Sieve, and informational values for particle size distribution by light scattering. ASTM C01.25 Committee on Fineness provided a range of desired materials properties, and the assistance of the Cement and Concrete Reference Lab provided a number of candidate plants with materials conforming to the Committee request. Approximately 1000 kg of cement was procured, homogenized, and packaged. An inter-laboratory study was initiated to develop the data set used to establish certified values. The certified values represent the consensus means and uncertainties for the Blaine and + 45 ?m residue. Informational values on particle size distribution are provided as the mean of the combined wet and dry laser diffraction data.
Effect of Vascular Comorbidity on Visual and Disability Outcomes in a Secondary Progressive Multiple Sclerosis Clinical Trial Cohort
Authors: Shangraw Kathleen , Murchison Charles F. , Silbermann Elizabeth , Spain Rebecca I.
Published: April 2022

BACKGROUND

Vascular comorbidity (VC) is associated with multiple sclerosis (MS) disease progression and visual dysfunction. The longitudinal effect of VC in people with secondary progressive MS (SPMS) is unclear. This study explored the impact of VC on standard clinical, MRI, and visual outcomes in people with SPMS enrolled in a clinical trial.

METHODS

Data were extracted from a 2-year randomized controlled trial (N = 51) testing the supplement lipoic acid in people with SPMS who underwent annual Expanded Disability Status Scales, Timed 25-Foot Walk tests, MRIs, visual acuity testing, and retinal nerve fiber layer (RNFL) and ganglion cell/inner plexiform layer (GCIPL) thicknesses per optical coherence tomography (OCT). Post hoc linear mixed-effects regression analysis compared baseline and annualized outcomes between participants without VC (VC−) and with 1 or more VCs (VC+) (hypertension, dyslipidemia, obesity, diabetes, peripheral or cardiovascular disease, tobacco use).

RESULTS

The VC− (n = 19) and VC+ (n = 28) participants were similar in age, sex, and MS disease duration and had comparable MS disability, mobility, and brain atrophy at baseline and throughout the 2-year parent study. The VC+ participants had worse baseline visual acuity than those in the VC− group by 0.13 logMAR (P = .041). No significant differences were detected in RNFL or GCIPL baseline thickness or atrophy between groups.

CONCLUSIONS

In an SPMS cohort, VC had an inconsistent effect on standard clinical, MRI, and exploratory OCT outcomes, suggesting that the effect of VC may not be evident in smaller cohort studies. Using a more refined definition of VC in future, adequately powered investigations may help effectively elucidate and account for the interaction between vascular risk burden and MS disability.
Comprehensive scientific research in the necropolis of the Donskoy Monastery in Moscow and the necropolis of the XVIII century Alexander Nevsky Lavra in St. Petersburg.
Authors: Loginova Yuliya Alekseevna
Published: April 2022

The subject of the study is the methods of complex research that precede repair and restoration work in the necropolis of the Donskoy Monastery in Moscow and in the necropolis of the XVIII century Alexander Nevsky Lavra in St. Petersburg. Historical вЂ“ archival and bibliographic studies, field studies, studies on volume parameters and special engineering and technological studies are considered as integral stages of an integrated approach. The author also examines in detail the historical aspect of the formation of objects and the current physical condition of monuments. The purpose of the work is the historical and architectural formation and preservation of necropolis complexes in the process of complex repair and restoration work. For the first time, the article provides a comprehensive overview of scientific types of research on memorial sculpture objects, architectural and artistic tombstones based on project documentation. The conclusion is formulated that comprehensive scientific research should be strictly mandatory in full, and not selective. This approach will allow not only to preserve the objects of memorial sculpture, but also to restore them in historical form using the most authentic materials and technologies. It is also emphasized that historical necropolises are full-fledged objects of historical research, the study of which is important not only in itself, but also as part of the history of art and the history of urban planning. The necessity of further study of the stated topic with a more in-depth study of the introduction of mandatory permanent monitoring of the state of preservation of monuments of necropolises to prevent further intensive destruction of unique monuments of memorial art was noted.
Adjusting eye aspect ratio for strong eye blink detection based on facial landmarks
Authors: Dewi Christine , Chen Rung-Ching , Jiang Xiaoyi , Yu Hui
Published: April 2022

Blink detection is an important technique in a variety of settings, including facial movement analysis and signal processing. However, automatic blink detection is very challenging because of the blink rate. This research work proposed a real-time method for detecting eye blinks in a video series. Automatic facial landmarks detectors are trained on a real-world dataset and demonstrate exceptional resilience to a wide range of environmental factors, including lighting conditions, face emotions, and head position. For each video frame, the proposed method calculates the facial landmark locations and extracts the vertical distance between the eyelids using the facial landmark positions. Our results show that the recognizable landmarks are sufficiently accurate to determine the degree of eye-opening and closing consistently. The proposed algorithm estimates the facial landmark positions, extracts a single scalar quantity by using Modified Eye Aspect Ratio (Modified EAR) and characterizing the eye closeness in each frame. Finally, blinks are detected by the Modified EAR threshold value and detecting eye blinks as a pattern of EAR values in a short temporal window. According to the results from a typical data set, it is seen that the suggested approach is more efficient than the state-of-the-art technique.
Five new mitogenomes sequences of Calidridine sandpipers (Aves: Charadriiformes) and comparative mitogenomics of genus Calidris
Authors: Chen Wan , Miao Keer , Wang Junqi , Wang Hao , Sun Wan , Yuan Sijia , Luo Site , Hu Chaochao , Chang Qing
Published: April 2022

Background

The genus Calidris (Charadriiformes, Scolopacidae) includes shorebirds known as dunlin, knots, and sanderlings. The relationships between species nested within Calidris, including Eurynorynchus, Limicola and Aphriza, are not well-resolved.

Methods

Samples were collected from Xiaoyangkou, Rudong County, Jiangsu Province, China. Mitogenomes were sequenced using the Illumina Novaseq 6000 platform for PE 2 × 150 bp sequencing, and then checked for PCR products. Protein-coding genes were determined using an Open Reading Frame Finder. tRNAscan-SE, MITOS, and ARWEN were used to confirm tRNA and rRNA annotations. Bioinformatic analyses were conducted using DnaSP 5.1 and MEGA X. Phylogenic trees were constructed using maximum likelihood and Bayesian analyses.

Results

We sequenced and annotated the mitogenome of five species and obtained four complete mitogenomes and one nearly complete mitogenome. Circular mitogenomes displayed moderate size variation, with a mean length of 16,747 bp, ranging from 16,642 to 16,791 bp. The mitogenome encoded a control region and a typical set of 37 genes containing two rRNA genes, 13 protein-coding genes, and 22 tRNA genes. There were four start codons, four stop codons, and one incomplete stop codon (T–). The nucleotide composition was consistently AT-biased. The average uncorrected pairwise distances revealed heterogeneity in the evolutionary rate for each gene; the COIII had a slow evolutionary rate, whereas the ATP8 gene had a fast rate. dN/dS analysis indicated that the protein-coding genes were under purifying selection. The genetic distances between species showed that the greatest genetic distance was between Eurynorhynchus pygmeus and Limicola falcinellus (22.5%), and the shortest was between E. pygmeus and Calidris ruficollis (12.8%). Phylogenetic trees revealed that Calidris is not a monophyletic genus, as species from the genera Eurynorynchus and Limicola were nested within Calidris. The molecular data obtained in this study are valuable for research on the taxonomy, population genetics, and evolution of birds in the genus Calidris.
Effect of aggregate size and polyethylene sheet curing on me-chanical and microstructural properties of lightweight expanded clay aggregate concrete
Authors:   Kutahya Dumlupinar University, Department of Civil Engineering, Kütahya (Turkey), Uğur Toprak Mehmet , Karakurt Cenk ,   Bilecik Seyh Edebali University, Department of Civil Engineering, Bilecik (Turkey), Güneş Osman ,   Kutahya Dumlupinar University, Department of Civil Engineering, Kütahya (Turkey)
Published: April 2022

This study assessed the effect of lightweight expanded clay aggregate (LECA) grain size and curing with polyethylene concrete curing film (PCCF) on microstructure, interfacial transition zone (ITZ), and compressive strength of structural lightweight aggregate concrete (LWAC) produced with two different Dmax (16 or 22.4 mm). To this end, 2 series of normal weight aggregate concretes (NWAC) and 6 series of LWAC incorporating 40% by vol. unprewetted LECA having (0-3, 3-8, or 8-16 mm) grain sizes were evaluated by using unit weight, compressive strength tests at 1, 7, and 28 days and SEM-EDX observations. Preventing the moisture loss from fresh concrete through PCCF curing had positive effects on compressive strength up to 14 and 9% for 1 and 28 days respectively. Shell thickness of LECA considerably increased with the decrease in LECA grain size. Thus, the compressive strength of LECA and LWAC increased by the decrease in LECA grain size. LWAC containing 0-3 mm LECA, achieved up to 21% higher compressive strength to weight ratio compared with the NWAC with the aid of the pozzolanic reactivity of fine LECA particles.
A methodological approach for seismic performance of existing single-storey industrial RC precast facilities
Authors:   Istanbul University-Cerrahpasa, Department of Civil Engineering, Istanbul (Turkey), Sayin Baris , Cosgun Turgay ,   Istanbul University-Cerrahpasa, Department of Civil Engineering, Istanbul (Turkey), Gunes Baris ,   Istanbul University-Cerrahpasa, Department of Civil Engineering, Istanbul (Turkey)
Published: April 2022

In critical earthquake-prone regions, many kinds of old-dated industrial facilities having structural deficiencies exist. Evaluation of seismic performance of these buildings to reach a sufficient level is quite vital. This paper scopes seismic performance assessment of an existing industrial structure. In the study, a comprehensive methodology is presented to carry out the seismic evaluation process of the buildings. The entire process is illustrated using a case study from an existing industrial precast facility. In this scope, initially, construction system, geometry, layout and material properties of the examined structure were determined through lab studies and site surveys to assess the performance level. Secondly, the current status of the structure was modeled using Midas Gen finite element software and a series of analyses were performed to reveal the seismic performance. In the analyses of seismic performance, the non-linear pushover analyses method was employed in seismic code. In the model the fiber and lumped hinges were assigned to the columns and beams, respectively. The strains occurring in the column cross-sections were calculated using the curvature values obtained from the corresponding members assigned hinges. These values were compared with the limit values which were specified in the code. It is concluded that this case study presents a practical approach for engineering applications regarding the seismic evaluation of industrial structures from the perspective of update codes.
Construction and demolition waste as raw material in pavements layers
Authors:   UNICAP-ICAM TECH, Curso de Engenharia Civil, Universidade Católica de Pernambuco, Recife (Brazil), Silva F.A.N. , Silva M.T.A. ,   UNICAP-ICAM TECH, Curso de Engenharia Civil, Universidade Católica de Pernambuco, Recife (Brazil), Delgado J.M.P.Q. ,   CONSTRUCT-LFC, Departamento de Engenharia Civil, Universidade do Porto, Rua Dr. Roberto Frias, Porto (Portugal), Azevedo A.C. ,   CONSTRUCT-LFC, Departamento de Engenharia Civil, Universidade do Porto, Rua Dr. Roberto Frias, Porto (Portugal), Pereira G.F.C. ,   CONSTRUCT-LFC, Departamento de Engenharia Civil, Universidade do Porto, Rua Dr. Roberto Frias, Porto (Portugal)
Published: April 2022

The proper management of demolition construction waste from the construction industry is an issue that has gained relevance over the last years in several research centers around the world and, in this context, researches on the potential of using construction and demolition waste to execute pavement layers have been stood out. The paper presented results of a research performed to evaluate the characteristics of the material produced by a waste treatment/beneficiation industrial plant. Tests to verify the suitability of the material as pavement subbase material were performed according Brazilian code - grain-size distribution composition, maximum characteristic dimension, shape particle index (SPI), contaminant percentage and sieving process. The results obtained indicated that the recycled aggregates investigated performed well in all the requirements of the reference standards used and only one correction, related to grain size distribution, was performed using a sieving process. It is important to highlight that the tests and analyses must be performed constantly when forming each aggregate batch, since the recycled aggregates are usually quite heterogeneous, with characteristics that may vary depending on the type of work, construction materials used or period of the year.
Value-added waste substitution using slag and rubber aggregates in the sustainable and eco-friendly compressed brick production
Authors:   School of Civil Engineering, REVA University, Bangalore (India), Selvaraj Praburanganathan , Chithra S ,   Department of Civil Engineering, Government College of Technology, Coimbatore (India), Divyah N ,   Department of Civil Engineering, Government College of Technology, Coimbatore (India), N Sudharsan ,   Department of Civil Engineering, Vidya Jyothi Institute of Technology, Hyderabad (India), Simha Reddy Yeddula Bharath ,   School of Civil Engineering, REVA University, Bangalore (India), S Vigneshwaran ,   School of Civil Engineering, REVA University, Bangalore (India)
Published: April 2022

The current study aimed to analyse the viability of incorporating the post cryogenic discarded rubber and the air-cooled slag as an aggregate in partial replacement of stone dust in fly ash bricks production. A range of mechanical, non-destructive, and microstructural tests was performed on bricks thus produced by incorporating rubber and slag aggregates in various dosages (i.e., 5, 10, 15, 20 and 25% by stone dust weight). The result revealed that the compressive strength dropped from 71 to 43 % in the case of rubber aggregate replacement. Morphology study confirms that the rubber aggregates resulted in the porous microstructure of the bricks and leads to lesser unit weight and lighter structure. The rubber may be used as a lightweight aggregate in the brick possibly as it reduces the density of the final product. However, the use of rubber in bricks needs to be cautiously designed to get hold of productive solutions at the end. The findings demonstrate that the copper slag substitution of up to 15%, found to be enhanced the strength properties and it will be a better choice for low-cost construction as a promising alternative construction material.
Water absorbing polymer balls as internal water curing agent in concrete to support hydration reaction
Authors:   Department of Civil Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, Chennai, Ta-milnadu (India), Ramalingam Vijayalakshmi , Ramesh Kamalesh ,   Department of Civil Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, Chennai, Ta-milnadu (India), Duraipandi Madhankumar ,   Department of Civil Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, Chennai, Ta-milnadu (India), U Jayesh ,   Department of Civil Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, Chennai, Ta-milnadu (India), Kuppusamy Selvam ,   Department of Civil Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, Chennai, Ta-milnadu (India)
Published: April 2022

polymer balls can supply water to the mortar or concrete mixture when added during the initial stage of mixing the concrete ingredients. It supplies the absorbed water during the hydration process of concrete as an internal water source. Water Absorption polymers (WAP) can absorb water up to hundred times of their own weight. Using this idea, the concrete mixture has been prepared with WAP and without WAP (Control) and subjected to air curing and water curing respectively. In this work WAP has been added in two different percentages i.e., 2.5% and 5% of the weight of cement, and the hardened concrete has been subjected to compression load. The mechanical strength and the volumetric change of these mixes were compared with the water cured control mix (Concrete without WAP). From the result, it was concluded that the air-cured specimen showed strength of 30.37 MPa and 28.74 MPa for 2.5% and 5% of addition of WAP balls respectively. This strength is about 99% and 94.2% of the strength of control water-cured specimen. Results also showed that specimens in air behave for expansion while samples in the water acted for shrinkage. Experiment results also showed that air-cured concrete specimens with WAP balls show significant strength gain over a period of 84 days compared to water-cured normal concrete mix samples.
Performance evaluation of porous asphalt mixtures modified with basalt fiber
Authors:   Civil Engineering Department, Faculty of Engineering Architecture and Design, Bartin University, Bartin (Turkey), Çetín Altan , Oral Gokhan ,   Civil Engineering Program, Graduate School of Natural and Applied Sciences, Bartin (Turkey)
Published: April 2022

Porous pavement applications, which is environmentally friendly, especially for residential areas, allow rainwater to remain clean and to feed groundwater through infiltration. Porous asphalt pavements, in which are among the pavement types used in porous pavements systems, also reduce environmental noise pollution. On the other hand, there is a need to improve the performance of these asphalt pavement mixtures, which have a short service life due to their porous structure. It has been considered to improve the performance of the pavement mixtures by using basalt fiber without compromising the hydraulic permeability level. The waste slag material released during the ferrochrome production process was used as aggregate in the porous asphalt mixture design. Thus, it is aimed to benefit from the economic and environmental aspects with the recycling of ferrochrome slag in an area suitable for its properties. In the study, the design performances of porous asphalt mixtures were determined with tests such as volume analysis, permeability, Cantabro particle loss, indirect tensile strength, and moisture susceptibility. Basalt fiber was added at 0.2%, 0.4%, 0.6% and 0.8% of the mixture weight. It has been determined that the mixtures of basalt fibers at 0.2% significantly improve the mechanical performance.
Esquema conceitual no desenvolvimento de novos produtos sustentáveis
Authors: Cruz Vera Lúcia , Pastana Sheila Trícia Guedes , Nodari Cristine Hermann , Felix Júnior Luiz Antonio
Published: April 2022

O presente estudo objetivou apresentar um esquema conceitual por meio de uma revisão sistemática das melhores práticas de desenvolvimento de novos produtos sustentáveis (DNPS) conjuntamente com o que já está consolidado na literatura sobre desenvolvimento de novos produtos (DNP), propondo a inclusão da dimensão sustentabilidade. Ficou evidenciado que o fortalecimento do vínculo entre orientação para sustentabilidade, desenvolvimento de novos produtos e competência em conhecimento de mercado, favorece o gerenciamento e ganhos na comercialização de novos produtos. Destarte, pode-se afirmar que a inclusão da dimensão sustentabilidade ao esquema conceitual de DNP proposto por Kahn, Barczak, Nicholas, Ledwith, Perks (2012) e Kahn, Barczak e Moss (2006) agregará valor e complementará tal modelo contribuindo assim para consolidação do DNPS no desenvolvimento de melhores práticas.
Caracterización de spin-off universitarias de base tecnológica: el caso de una universidad pública en el estado de Guanajuato
Authors: Catalina Rangel León María , López Salazar Alejandra , Molina Sánchez Rubén
Published: April 2022

Las innovaciones y el desarrollo tecnológico tienen un impacto local, económico y social importante, por lo que se vuelve relevante el fomento de procesos de I+D+i en las regiones. Las universidades constituyen uno de los centros encargados de generación de nuevos conocimientos que propician dichos procesos, esos nuevos conocimientos la llevan a buscar su aplicabilidad para la satisfacción de necesidades sociales. Uno de los mecanismos existentes para dicha aplicabilidad corresponde a spin-off universitarias de base tecnológica que representan nuevas empresas creadas a partir de la universidad resultado de conocimientos científicos y técnicos en ciencias e ingenierías. Es así como el objetivo de la presente investigación consiste en caracterizar a las spin-off universitarias de base tecnológica, de una universidad pública del estado de Guanajuato. El estudio corresponde a un estudio de caso, con un enfoque cualitativo empleando el diseño etnográfico; se realizaron un total de veinticuatro entrevistas a profundidad a spin-off universitarias de base tecnológica de una universidad pública del estado de Guanajuato, colaboradores de estas y a personal universitario de áreas de vinculación, extensión, proyectos y posgrados. Los resultados se agruparon en tres familias de códigos y veintidós categorías de análisis, destacándose que pueden surgir de manera planeada y no planeada. La institución de la que se desprende la spin-off es la universidad. Cuentan con figura jurídica propia, con una estructura financiera de asociados, joint venture o propia y el titular de la empresa es o fue el inventor/emprendedor y trabaja o trabajó en la universidad.
Inclusão no ensino superior: ações do Núcleo de Acessibilidade e Apoio Psicopedagógico de uma instituição de ensino
Authors: Cristina Gomes Batista Renata , Silva Vivas Eliane , Soares Nunes Thiago
Published: April 2022

Com o fomento das transformações sofridas no contexto educacional e organizacional, as Instituições de Ensino Superior (IES) buscam atender as demandas dos alunos com deficiência que necessitam de educação assistida, com o compromisso de garantir o acesso a todos à educação e valorização da diversidade humana. Desta forma, o presente artigo tem como finalidade investigar as ações do Núcleo de Acessibilidade e Apoio Psicopedagógico (NAAP) de uma IES, localizada na região metropolitana de Belo Horizonte em relação aos alunos com deficiência. O estudo caracteriza-se como estudo de caso, qualitativo, descritivo, realizado por meio de entrevistas a funcionários do setor e análise documental. As ações do programa são voltadas tanto aos alunos com deficiência, desde o apoio individual a adaptação e acompanhamento em sala de aula, quanto aos docentes na criação do plano de intervenção.  Observou-se que o NAAP promove ações que minimizam a discriminação dos alunos com deficiência no ensino superior e abre espaços para discussões relacionadas à equidade e respeito aos diferentes. No entanto, identificou barreira atitudinal de alguns docentes, em reverter o cenário excludente vivido por esses estudantes. Identificou também que como toda construção, faltam recursos para que as informações cheguem aos alunos deficientes, assim como os demais alunos sem deficiência recebem.
Estereótipos de gênero no curso de Secretariado Executivo: discussões a partir do olhar de estudantes do gênero masculino
Authors: Brunetti Gonçalves Bittencourt Nathália , Costa Mendes Diego
Published: April 2022

Devido à predominância feminina no escopo profissional e no meio acadêmico do Secretariado Executivo, os discentes de gênero masculino se deparam com desafios específicos – como, por exemplo, o de romper possíveis estereótipos historicamente construídos sobre essa ocupação. Neste sentido, este estudo busca compreender como estudantes de gênero masculino do Secretariado Executivo enxergam os estereótipos relacionados ao curso e a atuação no mercado de trabalho. Os dados primários foram coletados mediante entrevistas, realizadas a partir de roteiro semiestruturado com 18 alunos do curso. A análise dos dados foi feita por meio do método de análise de conteúdo. Os estudantes identificaram que fazem parte de suas vivências os seguintes estereótipos: da secretária; da aparência; da subserviência; das relações interpessoais; e da orientação sexual. Ante o exposto, foi possível evidenciar que tais estereótipos se caracterizam no curso e no mercado de trabalho do Secretariado Executivo como uma questão de gênero, visto que a maioria dos relatos se relaciona a diferenciais de gênero que, por vezes, atuam gerando desvantagens para os homens nesta área, como é o caso das oportunidades de trabalho.
Reflexões acerca da caracterização do estudo de caso no campo secretarial no contexto brasileiro
Authors: Rodrigues Luci Mari Aparecida , Denise Moreira Katia , Thais da Silva Lima Elaine , Barsalini Martins Cibele
Published: April 2022

O estudo de caso é aplicado em diferentes campos de estudo, para a apreensão de fenômenos cujas particularidades demandam um olhar aprofundado do pesquisador. Então, considerando-se que as pesquisas em Secretariado no Brasil trilham seu caminho em direção à solidificação científica, este estudo tem como objetivo refletir sobre a caracterização do Estudo de Caso nesse campo, a partir de uma pesquisa bibliográfica em artigos publicados pela Revista de Gestão e Secretariado, nas edições que compreendem o período dentre os anos de 2010 a 2019. Foram analisados artigos que apresentaram a expressão “estudo de caso” em seus respectivos títulos e/ou resumos. Os vinte estudos que atenderam aos critérios da pesquisa foram considerados a partir de categorias analíticas, norteadas por uma perspectiva construtivista social. Os dados coletados evidenciaram que a aplicação do estudo de caso é predominantemente de natureza intrínseca, direcionada ao entendimento das particularidades do caso. Os estudos, além disso, apresentaram fragilidades em fornecer subsídios ao leitor para a compreensão do caminho trilhado pelo pesquisador, bem como para a apreensão do caso enquanto um sistema integrado, conectado às diferentes forças que impactam sobre suas características e seus elementos constituintes.
Comparación de resultados inmediatos y a mediano plazo de la anastomosis de Blalock-Taussig versus la colocación de stent en tracto de salida de ventrículo derecho en neonatos sintomáticos con tetralogía de Fallot
Authors: Rocchia Fátima , Allub Alejandro , Guevara Artemio , De Anquin Lucrecia , Juaneda Ignacio , Contreras Alejandro , Azar Irma , Peirone Alejandro
Published: April 2022

Introducción: El manejo inicial de neonatos con tetralogía de Fallot (TF), con síntomas asociados a una anatomía desfavorabley un flujo vascular pulmonar significativamente reducido es controversial, y un desafío clínico.Objetivo: Describir la evolución clínica y comparar el crecimiento de ramas pulmonares en neonatos con TF sintomáticosingresados al Departamento de Cardiología del Hospital de Niños de Córdoba, desde marzo de 2011 hasta marzo de 2021, querecibieron anastomosis de Blalock-Taussig modificada (aBTm) versus colocación de stent en tracto de salida de ventrículoderecho (sTSVD).Material y métodos: Estudio retrospectivo, observacional. Se identificaron 113 pacientes con TF; 20 de ellos (18%) fueronneonatos sintomáticos y requirieron paliación inicial. Las variables categóricas se expresan como porcentaje; las continuascomo mediana y rango intercuartilo (RIC). Un valor de p <0,05 se consideró significativo.Resultados: De los 20 pacientes incluidos en el estudio, 11 (55%) constituyen el grupo aBTm y 9 (45%) el grupo sTSVD. Enel grupo aBTm la rama pulmonar derecha (RPD) pre paliación tenía un score Z -3 (RIC 4,20), que aumentó a -1,6 (RIC 1,56)(p = 0,11) post intervención; y la rama pulmonar izquierda (RPI) un score Z -2,5 (RIC 4,8) que se incrementó a -1,80 (RIC2,36) (p = 0,44). En el grupo sTSVD la RPD pre paliación tuvo un score Z -3,45 (RIC 3,83) que aumentó a - 2,5 (RIC 3,58)(p = 0,021) y la RPI un score Z -4,10 (RIC 2,51) que se incrementó a -2,00 (RIC 3,75) (p = 0,011). La saturación de O2 (SO2)pre intervención fue 75% (RIC 6), y aumentó a 87% (RIC 9) en el grupo aBTm (p = 0,005); e inicialmente fue 75% (RIC 16) yaumentó a 91% (RIC 13) en el grupo sTSVD (p = 0,008). La mediana de estadía hospitalaria post procedimiento fue 10 días(RIC 11) en el grupo aBTm, y 6 (RIC 2) en el grupo sTSVD (p= 0,095).Conclusiones: En neonatos con TF sintomáticos, ambas estrategias paliativas mejoran la condición clínica. En los que recibieronsTSVD, se objetivó un crecimiento mayor de las ramas pulmonares. Mayor número de casos y seguimiento más largoserán necesarios para confirmar estos hallazgos.
Terapia de resincronización cardíaca. Incidencia y mecanismos involucrados en la reducción de la insuficiencia mitral funcional
Authors: Galizio Néstor O. , Amrein María E. , González José L. , Carnero Guillermo A. , Mysuta Mauricio A. , Guevara Ernesto , Favaloro Liliana , Favaloro Roberto
Published: April 2022

Introducción: La insuficiencia mitral funcional (IMF) es común en pacientes con insuficiencia cardíaca (IC). La IMF moderada/grave (M/G) se asocia a peor pronóstico. Objetivo: Describir la prevalencia de IMF y los mecanismos involucrados en su reducción en respondedores a la terapia de resincronización cardíaca (TRC) a los 6 meses comparados con 12 y 24 meses. Métodos: Entre 2009 y 2018 fueron tratados 338 pts. Respondedores: reducción de CF NYHA ≥1 grado o aumento de la fracción de eyección ventricular izquierda (FEVI) ≥5% (absoluto). La IMF se graduó en 4 puntos: No-IMF, leve, M y G, y se la relacionó con las mediciones ecocardiográficas. Características Basales: edad 64 ±10 años, hombres 71%, CF-NYHA IIIII 92%, bloqueo de rama izquierda (BRI) 67%, QRS ≥150 ms 75%, diámetro diastólico del VI (DDVI) 68 ± 9 mm, diámetro sistólico del VI (DSVI) 52 ± 12 mm, FEVI 24 ± 7%. Resultados: La prevalencia de IMF fue del 92,6%. A los 6 meses, 86% fueron respondedores y 23% de ellos mejoraron de IMF-M/G a IMF-Leve/No-IMF. Hubo un fuerte remodelado inverso: DDVI 68 ± 10 vs 63 ± 11 mm, (p = 0,0001), DSVI 55 ± 12 vs 50 ± 13 mm, (p = 0,0006) y FEVI 25 ± 11 vs 33 ± 10%, (p = 0,00001). Comparando 6 con 12 meses 89,4% fueron respondedores, 8% mejoraron de IMF-M/G a IMF-Leve/No-IMF. Comparando 6 con 24 meses 88% fueron respondedores, 14,6% mejoraron de IMF-M/G a IMF-Leve/No-IMF. Entre 6 y 12 y 6 y 24 meses no hubo remodelado inverso significativo. Conclusiones: La prevalencia de IMF fue elevada. El mayor remodelado inverso y reducción de la IMF se observaron a los 6 meses, siendo el primero el principal mecanismo en la reducción de la IMF. Esta mejoría se sostuvo a los 12 y 24 meses
ADAPTAÇÃO MARGINAL DE COROAS CAD-CAM DE PORCELANA FELDSPÁTICA COM PREPARO CONVENCIONAL E ULTRAFINO
Authors: Sampaio Luz Araújo Sara , Bandeira Sanches Ingrid , Coelho Metzker Thayara , Oliveira Carvalho Adriana , Castor Xisto Lima Emilena Maria
Published: April 2022

Objetivo: avaliar a influência da espessura do preparo na adaptação marginal de coroas de porcelana feldspática fabricadas pela tecnologia CAD/CAM e identificar a(s) face(s) que apresenta(m) maior discrepância marginal em cada preparo. Metodologia: Dois molares inferiores humanos foram preparados para coroa total: preparo convencional (PC) – chanfro: 1,0 mm, redução oclusal: 2 mm e axial: 1,5 mm; preparo ultrafino (PUF) – chanfro arredondado: 0,5 mm, redução oclusal e axial: 0,7 mm. Os preparos foram escaneados com escâner intraoral e os dados processados no software Cerec InLab foram transmitidos à fresadora. Sobre os dois tipos de preparo foram confeccionadas coroas de porcelana feldspática (Cerec Blocs) (n=10). As coroas foram adaptadas ao dente preparado e analisadas em lupa estereoscópica com aumento de 45x. As imagens obtidas foram transferidas para o programa Corel Draw para leitura da discrepância marginal. O teste estatístico utilizado para avaliar os tipos de preparo foi t de Student e para as faces foram ANOVA e Bonferroni (p<0.05). Resultados: Os menores valores de discrepância marginal foram encontrados no grupo PC (73,25 ± 18,19) que diferiu estatisticamente do grupo PUF (110,40 ± 28,64). As faces mesiais de ambos os grupos apresentaram maiores valores de discrepância marginal (PC=132,01 ± 50,93 e PUF=173,01 ± 73,63), respectivamente, com diferença estatisticamente significante em relação às demais faces. Conclusão: As coroas de porcelana feldspática com PC apresentaram melhor adaptação marginal comparadas às coroas com PUF. As faces dentárias apresentaram valores de discrepância marginal dentro do parâmetro utilizado (≤120 μm), exceto a face mesial, em ambos os preparos.
O BISEL NAS MARGENS DA CAVIDADE RESULTA EM MELHORES PARÂMETROS CLÍNICOS DE RESTAURAÇÕES EM RESINA COMPOSTA DE LESÕES CERVICAIS NÃO CARIOSAS? UMA REVISÃO SISTEMÁTICA
Authors: Torres-Homem Souza Luciana , Araújo de Nóbrega Cavalcanti Andrea
Published: April 2022

O bisel nas margens da cavidade tem mostrado vantagens sobre o desempenho clínico de restaurações com compósitos. Porém, ainda existem controvérsias no meio científico sobre essas vantagens em lesões cervicais não cariosas (LCNC). Objetivo: identificar se o biselamento do esmalte resulta em melhores parâmetros clínicos de restaurações compostas em LCNCs, utilizando compósito de consistência regular ou fluida. Materiais e métodos: o termo “enamel margin configuration” foi pesquisado nas bases de dados PUBMED, LILACS, MEDLINE, GOOGLE ACADÊMICO, COCHRANE LIBRARY, BIBLIOTECA BBO, no período de junho à julho de 2020. Ensaios clínicos randomizados ou estudos laboratoriais deveriam estar publicados em periódicos de 2000 à 2020, avaliando taxas de retenção e níveis de microinfiltração em restaurações realizadas com compósitos em consistência regular ou fluida em LCNCs, confeccionadas com e sem bisel na margem da cavidade, com pelo menos 6 meses de acompanhamento e sem restrição ao local dos estudos. Resultados; a busca identificou 13.148 artigos, sendo selecionados 4 artigos com estudos laboratoriais e 2 do tipo clínicos, que foram submetidos à análise de qualidade pela ferramenta de risco de viés da Colaboração Cochrane. Dentre os estudos selecionados não houve uma padronização entre as técnicas da confecção do bisel, nem dos materiais e instrumentos utilizados. Conclusão: o bisel nas margens não acarretou em melhores níveis de microinfiltração marginal e retenção das restaurações com resina composta em consistência convencional ou fluida em LCNC.
ASSISTÊNCIA ODONTOLÓGICA A PACIENTE INFANTIL COM DEFICIÊNCIA INTELECTUAL: RELATO DE CASO
Authors: Soares de Sá Pâmela Kalliny , De Oliveira Valente Dias Vitória Letícia , De Abreu de Vasconcellos Sara Juliana
Published: April 2022

A assistência odontológica a pacientes infantis, normalmente requer uma maior cautela do que em adultos e em se tratando de pacientes com deficiência, o tratamento se torna ainda mais desafiador. Este trabalho tem como objetivo relatar um caso e descrever sobre os manejos clínicos usados em pacientes com deficiência, em especial com deficiência intelectual leve (DI) e transtorno de déficit de atenção e hiperatividade (TDAH). O caso clínico relatado, aborda um tratamento odontológico de um paciente de 8 anos com diagnóstico de DI leve, associado ao TDAH, com necessidade de intervenção cirúrgica (remoção de frênulo lingual e odontoma composto), e devido as características do TDHA, como a inquietude e não colaboração, houve necessidade de adequação do planejamento. O tratamento de anquiloglossia (AQ), baseia-se na remoção da inserção do freio para devolver movimentos adequados da língua. Já o odontoma composto (OC), mais comum tumor odontogênico, que no relato foi descoberto no exame radiográfico de rotina, deve ser enucleado e apresenta poucas chances de recidiva. Levando em consideração a situação clínica do paciente e visando seu conforto, foi optado a realização das cirurgias em ambiente hospitalar sob anestesia geral, garantindo acima de tudo a segurança do paciente e realizado tratamento odontológico completo em única sessão.
EVIDÊNCIA CIENTÍFICA PARA USO DO FIO DENTAL NO CONTROLE DE BIOFILME E INFLAMAÇÃO GENGIVAL
Authors: Del Peloso Ribeiro Érica , Suellen Silva Vanessa
Published: April 2022

Introdução: A prevenção de doenças orais está intimamente relacionada à higienização oral, na qual o fio dental é considerado um meio mecânico para remoção do biofilme dentário das superfícies interproximais dos dentes. No entanto, a frequência de utilização do fio dental é baixa na população em geral. Objetivo: Buscar na literatura evidências científicas sobre o efeito do uso do fio dental no controle de biofilme dentário e inflamação gengival. Métodos: Para a seleção das referências foram utilizadas as bases SCIELO, LILACS e PUBMED, sendo que a seleção dos artigos foi limitada a língua inglesa e ao período entre 1970 a 2018. Resultados: Observou-se que há poucas evidências científicas que embasam que o uso do fio dental está relacionado à redução do biofilme dentário e ao sangramento gengival. Considerações finais: Torna-se necessário realizar novos estudos clínicos controlados randomizados delineados para avaliar especificamente o efeito do uso do fio dental em diferentes situações clínicas. Apesar disso, conclui-se que o fio dental é um complemento importante para escovação, visto que os benefícios superam quaisquer danos potenciais.
Formation of Pixelated Elastic Films via Capillary Suction of Curable Elastomers in Templated Hele–Shaw Cells
Authors: Badaoui Mohamed , Kresge Grace , Ushay Christopher , Marthelot Joel , Brun P.‐T.
Published: April 2022

Natural materials are highly organized, frequently possessing intricate and sophisticated hierarchical structures from which superior properties emerge. In the wake of biomimicry, there is a growing interest in designing architected materials in the laboratory as such structures could enable myriad functionalities in engineering. Yet, their fabrication remains challenging despite recent progress in additive manufacturing. In particular, soft materials are typically poorly suited to form the requisite structures consisting of regular geometries. Here, a new frugal methodology is reported to fabricate pixelated soft materials. This approach is conceptually analogous to the watershed transform used in image analysis and allows the passive assembly of complex geometries through the capillary‐mediated flow of curable elastomers in confined geometries. Emerging from sources distributed across a Hele–Shaw cell consisting of two parallel flat plates separated by an infinitesimally small gap, these flows eventually meet at the “dividing lines” thereby forming Voronoi tesselations. After curing is complete, these structures turn into composite elastic sheets. Rationalizing the fluid mechanics at play allows the structural geometry of the newly formed sheets to be tailored and thereby their local material properties to be tuned.
Salt‐Assisted 2H‐to‐1T′ Phase Transformation of Transition Metal Dichalcogenides
Authors: Lai Zhuangchai , Yao Yao , Li Siyuan , Ma Lu , Zhang Qinghua , Ge Yiyao , Zhai Wei , Chi Banlan , Chen Bo , Li Lujiang , Wang Lei , Zheng Zijian , Gu Lin , Du Yonghua , Zhang Hua
Published: April 2022

Phase engineering of nanomaterials (PEN) has demonstrated great potential in the fields of catalysis, electronics, energy storage and conversion, and condensed matter physics. Recently, transition metal dichalcogenides (TMDs) with unconventional metastable phases (e.g., 1T and 1T′) have attracted increasing research interest due to their unique and appealing physicochemical properties. However, there is still a lack of a simple, universal, and controlled method for the preparation of large‐scale and high‐purity unconventional‐phase TMD crystals, restricting their further fundamental study and practical applications. Here, a facile, one‐step salt‐assisted general strategy is reported for the controlled phase transformation of commercially available TMDs with conventional 2H phase, yielding a large amount of metastable 1T′‐phase TMDs, including WS2, WSe2, MoS2, and MoSe2. It is found that the easily accessible metal salts, such as K2C2O4·H2O, K2CO3, Na2CO3, Rb2CO3, Cs2CO3, KHCO3, NaHCO3, and NaC2O4, can be used to assist the 2H‐to‐1T′ phase transformation, greatly simplifying the synthetic process for producing metastable 1T′‐TMDs. Importantly, this method can also be used to prepare 1T′‐TMD alloys, such as 1T′‐WS2xSe2(1−x). This newly developed strategy is robust and highly effective, which can also be used for the phase engineering of other materials with various polymorphs.