bluuebunny/crossref_metadata_2025 huggingface dataset:
CI Tau: A Controlled Experiment in Disk–Planet Interaction
Authors: Muley Dhruv , Dong Ruobing
Published: November 2021

CI Tau is a young (∼2 Myr) T Tauri system with a substantial near-infrared (NIR) excess in its spectral energy distribution (SED), indicating that the protoplanetary disk extends very close to its star. This is seemingly at odds with the radial-velocity discovery of CI Tau b, a ∼12 M

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planet at ∼0.1 au, which would be expected to carve a wide, deep cavity in the innermost disk. To investigate this apparent contradiction, we run 2D hydrodynamics simulations to study the effect of the planet on the disk, then post-process the results with radiative transfer to obtain an SED. We find that at ∼0.1 au, even such a massive companion has little impact on the NIR excess, a result that holds regardless of planetary eccentricity and dust size distribution. Conversely, the observed full-disk signature in CI Tau’s SED is consistent with the existence of the hot super-Jupiter CI Tau b. As our simulations uncover, clear transition-disk signatures in SEDs are more likely to be signposts of nascent “warm” Jupiters, located at around 1 au in the future habitable zones of their host stars.
SCOLINTER : un corpus trilingue. L’exemple de la segmentation en mots
Authors: Ponton Claude , Gutiérrez-Cáceres Rafaela , Teruggi Lilia , Farina Elisa , Brissaud Catherine , Wolfarth Claire
Published: November 2021

Cet article décrit la conception d’un corpus d’écrits scolaires longitudinal et trilingue (français, espagnol, italien). L’objectif est d’établir une comparaison de l’évolution des compétences en littéracie entre ces trois langues à l’école primaire. Pour le moment, seul le CP (grade 1) a été entièrement traité mais les mêmes élèves seront suivis jusqu’au CM2 (grade 5). L’exploitation de ce corpus propose une approche reposant sur des comparaisons entre la version des textes produits par les élèves et une version dite ‹normalisée›. Cette approche permet d’assister la description linguistique des réussites et des difficultés dans l’apprentissage de l’écrit. En particulier, l’article s’intéressera à la segmentation entre les mots, en mettant en évidence à la fois la fréquence du phénomène et les catégories de mots dans lesquelles il se produit. L’analyse comparative révèle la présence de caractéristiques similaires dans le corpus trilingue.
Cartographie des usages et des erreurs orthographiques sur les verbes dans des récits écrits par des élèves de 6 à 15 ans
Authors: Lavieu-Gwozdz Belinda , Vinel Élise , Goossens Vannina , Brissaud Catherine
Published: November 2021

Cette étude cherche à donner une vue panoramique des performances orthographiques des élèves en production de texte dans le domaine de la morphographie du verbe, du CP à la classe de 3 e  du collège, et à comprendre si la disponibilité des marques verbales dans des tests standardisés se retrouve en situation de production de texte. Nous nous intéressons plus particulièrement aux tiroirs verbaux les plus utilisés par les élèves dans des textes narratifs : présent, imparfait, passé simple et infinitif. Nous décrivons les formes produites par les élèves en distinguant celles qui portent sur les bases verbales de celles qui portent sur les désinences. Nous cherchons à identifier d’éventuels phénomènes récurrents mais aussi des spécificités qui pourraient caractériser certains niveaux scolaires. Des pistes didactiques sont enfin suggérées.
Clivage droite/gauche et V e République : une longue tournée d’adieux ?
Authors: Rozenberg Olivier
Published: November 2021

En contradiction avec l’aspiration unanimiste de son fondateur, la V e  République, à travers ses règles constitutionnelles et électorales, a favorisé l’exacerbation du clivage droite/gauche. Cette partition s’est étendue au-delà la vie politique (qui ne s’est jamais résumée à cette seule alternative) et fut un vecteur puissant de politisation. Progressivement cependant, le clivage fut victime de la défiance généralisée vis-à-vis des dirigeants politiques. La présidentielle de 2017 a signifié que son dépassement était possible dans le cadre institutionnel spécifique de la V e . Toutefois, les notions de droite et de gauche n’ont pas disparu avec l’élection d’un président « et de droite et de gauche ».
Un clivage fondamental mais sans lendemain
Authors: Reynié Dominique
Published: November 2021

La construction européenne agite la vie politique française depuis la création de la Communauté européenne de défense, le clivage qui oppose les pro- aux anti-européens débordant la confrontation droite/gauche traditionnelle. Omniprésent dans le débat national, en particulier lors des élections présidentielles depuis 1988, ce clivage est exacerbé par le recours au référendum, comme ce fut le cas en 2005. Cependant, le fait que le camp des anti-européens ne soit pas parvenu à bâtir une force alternative capable d’accéder au pouvoir montre que l’opinion publique est en réalité largement acquise à l’Europe et à l’euro. Là est le paradoxe. Pour être fondamental, le clivage européen n’en semble pas moins privé d’avenir politique.
Partis de gouvernement et transformation des systèmes de clivages
Authors: Martin Pierre
Published: November 2021

Si le déclin des partis de gouvernement en Europe occidentale depuis les années 1970 est pour une part lié à l’apparition de nouveaux enjeux et de nouveaux clivages, il résulte principalement du recul de la croissance économique, de l’augmentation des attentes de la population envers l’État et du développement de comportements contestataires. Ces transformations économiques et sociales ont fortement affaibli la capacité des gouvernants à prendre des décisions légitimes aux yeux des citoyens.
La « pulvérisation démocratique », ou les clivages façon puzzle
Authors: Thiers Éric
Published: November 2021

La « pulvérisation démocratique » est une révolution anthropologique. Elle est marquée par l’atomisation des acteurs et l’impossibilité d’organiser des débats d’idées argumentés et de construire de la délibération collective. Sa forme en est la violence qui caractérise désormais le jeu politique. Sa conséquence en est la destruction des formes classiques du jeu démocratique fondées sur celui des clivages. L’affaiblissement de ces structures objectives et profondes, sous le coup de cette pulvérisation démocratique, ouvre la voie à une personnalisation de la politique.
Recent developments on spatial propagation for diffusion equations in shifting environments
Authors: Wang Jia-Bing , Li Wan-Tong , Dong Fang-Di , Qiao Shao-Xia
Published: November 2021

In this short review, we describe some recent developments on the spatial propagation for diffusion problems in shifting environments, including single species models, competition/cooperative models and chemotaxis models submitted to classical reaction-diffusion equations (with or without free boundaries), integro-difference equations, lattice differential equations and nonlocal dispersal equations. The considered topics may typically come from modeling the threats associated with global climate change and the worsening of the environment resulting from industrialization which lead to the shifting or translating of the habitat ranges, and also arise indirectly in studying the pathophoresis as well as some multi-stage invasion processes. Some open problems and potential research directions are also presented.
Glassey-Strauss representation of Vlasov-Maxwell systems in a Half Space
Authors: Cao Yunbai , Kim Chanwoo
Published: November 2021

Following closely the classical works [5]-[7] by Glassey, Strauss, and Schaeffer, we present a version of the Glassey-Strauss representation for the Vlasov-Maxwell systems in a 3D half space when the boundary is the perfect conductor.
New computations for the two-mode version of the fractional Zakharov-Kuznetsov model in plasma fluid by means of the Shehu decomposition method
Authors: Al-Qurashi Maysaa ,   Department of Mathematics, King Saud University, P. O. Box 22452, Riyadh 11495, Saudi Arabia, Rashid Saima , Jarad Fahd , Tahir Madeeha , Alsharif Abdullah M. ,   Department of Mathematics, Government College University, Faisalabad, Pakistan,   Department of Mathematics, Çankaya University, Ankara, Turkey,   Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan,   Department of Mathematics, Government College Women University, Faisalabad, Pakistan,   Department of Mathematics, Faculty of Science, Taif University, P. O. Box 11099, Taif 21944, Saudi Arabia
Published: November 2021

In this research, the Shehu transform is coupled with the Adomian decomposition method for obtaining the exact-approximate solution of the plasma fluid physical model, known as the Zakharov-Kuznetsov equation (briefly, ZKE) having a fractional order in the Caputo sense. The Laplace and Sumudu transforms have been refined into the Shehu transform. The action of weakly nonlinear ion acoustic waves in a plasma carrying cold ions and hot isothermal electrons is investigated in this study. Important fractional derivative notions are discussed in the context of Caputo. The Shehu decomposition method (SDM), a robust research methodology, is effectively implemented to generate the solution for the ZKEs. A series of Adomian components converge to the exact solution of the assigned task, demonstrating the solution of the suggested technique. Furthermore, the outcomes of this technique have generated important associations with the precise solutions to the problems being researched. Illustrative examples highlight the validity of the current process. The usefulness of the technique is reinforced via graphical and tabular illustrations as well as statistics theory.
Identification of novel genetic biomarkers and treatment targets for arteriosclerosis-related abdominal aortic aneurysm using bioinformatic tools
Authors: Niu Fang ,   Department of General Surgery, General Hospital of Tianjin Medical University, Tianjin Medical University, Tianjin, China, Liu Zongwei , Liu Peidong , Pan Hongrui , Bi Jiaxue , Li Peng , Luo Guangze , Chen Yonghui , Zhang Xiaoxing , Dai Xiangchen ,   Department of Neurosurgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
Published: November 2021

A large number of epidemiological studies have confirmed that arteriosclerosis (AS) is a risk factor for abdominal aortic aneurysm (AAA). However, the relationship between AS and AAA remains controversial. The objective of this work is to better understand the association between the two diseases by identifying the co-differentially expressed genes under both pathological conditions, so as to identify potential genetic biomarkers and treatment targets for atherosclerosis-related aneurysms. Differentially-expressed genes (DEGs) shared by both AS and AAA patients were identified by bioinformatics analyses of Gene Expression Omnibus (GEO) datasets GSE100927 and GSE7084. These DEGs were then subjected to bioinformatic analyses of protein-protein interaction (PPI), Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG). Finally, the identified hub genes were further validated by qRT-PCR in AS (n = 4), AAA (n = 4), and healthy (n = 4) individuals. Differential expression analysis revealed a total of 169 and 37 genes that had increased and decreased expression levels, respectively, in both AS and AAA patients compared with healthy controls. The construction of a PPI network and key modules resulted in the identification of five hub genes (SPI1, TYROBP, TLR2, FCER1G, and MMP9) as candidate diagnostic biomarkers and treatment targets for patients with AS-related AAA. AS and AAA are indeed correlated; SPI1, TYROBP, TLR2, FCER1G and MMP9 genes are potential new genetic biomarkers for AS-related AAA.
Nuevos datos de Ocys tachysoides (Antoine, 1933) en la península ibérica y discusión sobre su distinción de Ocys harpaloides (Audinet-Serville, 1821) (Coleoptera, Carabidae)
Authors: Muñoz-Santiago José , Ortuño Vicente M.
Published: November 2021

Ocys tachysoides (Antoine, 1933) y Ocys harpaloides (Audinet-Serville, 1821) son dos especies próximas cuya distinción era difícil antes de la publicación de ciertos trabajos recientes. Mientras que O. harpaloides es bien conocido en la península ibérica, los datos disponibles sobre O. tachysoides son escasos (tan solo cuatro citas han sido publicadas). Se planteó la hipótesis de que O. tachysoides ha sido frecuentemente confundido con O. harpaloides en dicho territorio. Para evaluarla, se estudió material ibérico, de colección, de O. harpaloides y Ocys sp. y se (re)identificó a nivel de especie basándose en los caracteres diagnósticos actualmente conocidos (genitalia y rasgos externos). Un total de 9 ejemplares de O. tachysoides fueron localizados entre el material estudiado, lo que apoya la hipótesis inicial. Así, y junto con tres capturas recientes en España central, se aportan 11 citas nuevas de O. tachysoides. Los resultados sugieren que, al menos en las poblaciones ibéricas, la morfología de la genitalia y el patrón de la microescultura son caracteres diagnósticos consistentes. Por el contrario, ambas especies pueden presentar expresiones poco comunes de la coloración y forma de los élitros y de la forma de los ángulos posteriores del pronoto. La corología actualizada de O. tachysoides muestra que la especie está presente en el centro y noroeste de España y en el centro y norte de Portugal, en regiones templadas y húmedas que, frecuentemente, cuentan con hábitats montañosos y forestales. Son necesarios futuros estudios para esclarecer la distribución real y la autoecología de O. tachysoides.
Il banchetto nuragico
Authors: Perra Mauro
Published: November 2021

In questo contributo l’autore analizza i modi di produzione e di consumo di alimenti di origine vegetale (cerali, legumi e frutti spontanei) e animale (allevamento e caccia) durante l’età nuragica (XVIII-VIII secolo a.C.).
Les représentations d’offrandes alimentaires en contexte funéraire en Étrurie
Authors: Hugot Laurent
Published: November 2021

Nombre de réceptacles qui composent les mobiliers funéraires étaient liés à l’utilisation de substances animales et végétales pour les besoins des rituels funéraires. Les recherches sur l’identification des matières et des produits progressent rapidement grâce à l’utilisation de techniques d’analyses toujours plus performantes. Toutefois, c’est par la confrontation des sources archéologiques et des représentations d’offrandes alimentaires en contexte funéraire qu’il est possible de mieux comprendre l’utilisation des aliments lors des funérailles et des visites successives aux défunts.
Les analyses organiques en contexte archéologique. Clés d’interprétation croisées de la chimie et de l’ethno-archéobotanique
Authors: Dodinet Élisabeth , Garnier Nicolas
Published: November 2021

Les récipients, qu’ils soient en céramique, en pierre, en métal ou en verre, gardent toujours trace de leurs anciens contenus sous forme d’imprégnations ou de dépôts invisibles sur la paroi interne, invisible. L’extraction des constituants chimiques laissés par les contenus, par des méthodes chimiques adaptées, et leur analyse par des techniques performantes alliant chromatographie et spectrométrie de masse, permettent de définir des empreintes chimiques. Les connaissances acquises en phytochimie, pharmacognosie, biogéochimie, biologie végétale et animale, mais aussi par l’archéologie expérimentale permettent de relier les marqueurs anciens identifiés à leurs sources biologiques. Nous présentons ici un bilan des résultats obtenus dans le cadre du programme de recherche MAGI (2014-16), des connaissances issues des sources littéraires, de la botanique et de l’archéobotanique et des logiques utilisées pour l’identification des cires végétales et animales, des huiles végétales et des matériaux résineux.
Teoria crítica, cultura visual e emancipação: uma análise interdisciplinar sobre a fotografia na sociedade global
Authors: Fernandes Ribeiro Marcos Abraão
Published: November 2021

Esta resenha analisa o livro Gozo Estético na cultura visual: fotografia, memória e alienação social, do sociólogo Sergio Luiz Pereira da Silva, que propõe uma análise interdisciplinar sobre a fotografia. Desta forma, o livro procura apontar os mecanismos de dominação contemporâneos e propor caminhos de superação da dominação. O livro representa uma grande contribuição para a análise crítica sobre o papel da fotografia, mas que poderia ter apresentado de forma sistemática como ela pode ser utilizada como ferramenta de ativismo digital para a transformação da realidade na sociedade global.
RDF Query Path Optimization Using Hybrid Genetic Algorithms
Authors: Ilyas Qazi Mudassar , Ahmad Muneer , Rauf Sonia , Irfan Danish
Published: November 2021

Resource Description Framework (RDF) inherently supports data mergers from various resources into a single federated graph that can become very large even for an application of modest size. This results in severe performance degradation in the execution of RDF queries. As every RDF query essentially traverses a graph to find the output of the Query, an efficient path traversal reduces the execution time of RDF queries. Hence, query path optimization is required to reduce the execution time as well as the cost of a query. Query path optimization is an NP-hard problem that cannot be solved in polynomial time. Genetic algorithms have proven to be very useful in optimization problems. We propose a hybrid genetic algorithm for query path optimization. The proposed algorithm selects an initial population using iterative improvement thus reducing the initial solution space for the genetic algorithm. The proposed algorithm makes significant improvements in the overall performance. We show that the overall number of joins for complex queries is reduced considerably, resulting in reduced cost.
SMA-LinR: An Energy and SLA-Aware Autonomous Management of Virtual Machines
Authors: Barthwal Varun , Rauthan Manmohan Singh , Varma Rohan
Published: November 2021

Cloud datacenters consume enormous energy and generate heat, which affects the environment. Hence, there must be proper management of resources in the datacenter for optimum usage of energy. Virtualization enabled computing improves the performance of the datacenters in terms of these parameters. Therefore, Virtual Machines (VMs) management is a required activity in the datacenter, which selects the VMs from the overloaded host for migration, VM migration from the underutilized host, and VM placement in the suitable host. In this paper, a method (SMA-LinR) has been developed using the Simple Moving Average (SMA) integrated with Linear Regression (LinR), which predicts the CPU utilization and determines the overloading of the host. Further, this predicted value is used to place the VMs in the appropriate PM. The main aim of this research is to reduce energy consumption (EC) and service level agreement violations (SLAV). Extensive simulations have been performed on real workload data, and simulation results indicate that SMA-LinR provides better EC and service quality improvements.
Enhancing the Security and Performance of Cloud for E-Governance Infrastructure
Authors: Lamkuche Hemraj Shobharam , Kondaveety Vijaya Bhaskar , Sapparam Vijaya Lakshmi , Singh Shruti , Rajpurkar Raj Deepak
Published: November 2021

E-Governance is getting momentous in India. Over the years, e-Governance has played a major part in every sphere of the economy. In this paper, we have proposed E-MODI (E-governance model for open distributed infrastructure) a centralized e-Governance system for government of India, the implementation of this system is technically based on open distributed infrastructure which comprises of various government bodies in one single centralized unit. Our proposed model identifies three different patterns of cloud computing which are DGC, SGC and CGC. In addition, readiness assessment of the services needs to migrate into cloud. In this paper, we propose energy efficient VM allocation algorithm to achieve higher energy efficiency in large scale cloud data centers when system on optimum mode. Our objectives have been explained in details and experiments were designed to demonstrate the robustness of the multi-layered security which is an integration of High secure lightweight block cipher CSL along with Ultra powerful BLAKE3 hashing function in order to maintain information security triad.
Lightweight VLSI Architectures for Image Encryption Applications
Authors: Prathiba A. , Srivathshav Suyash Vardhan , Ramkumar P. E.  , Rajkamal E.  , Kanchana Bhaaskaran V. S.
Published: November 2021

Lightweight cryptography offers significant security service in constrained environments such as wireless sensor networks and Internet of Things. The focus of this article is to construct lightweight SPN block cipher architectures with substitution box based on finite fields. The paper also details the FPGA implementation of the lightweight symmetric block cipher algorithm of SPN type with combinational S-box. Restructuring of traditional look-up-table Substitution Box (S-Box) sub-structure with a combinational logic S-box is attempted. Elementary architectures namely the basic round architecture and reduced datawidth architecture incorporating look-up-table and combinational S-Box substructure are compared in terms of area and throughput. Proposed restructure mechanism occupies less FPGA resources with no comprise in the latency and also demonstrates performance efficiency and low power consumption in Xilinx FPGAs. Robustness of the proposed method against various statistical attacks has been analyzed through comparison with other existing encryption mechanisms.
Comparative Analysis of Bio-Inspired Optimization Algorithms in Neural Network-Based Data Mining Classification
Authors: Mathi Murugan T.  , Baburaj Eppipanious
Published: November 2021

It always helps to determine optimal solutions for stochastic problems thereby maintaining good balance between its key elements. Nature inspired algorithms are meta-heuristics that mimic the natural activities for solving optimization issues in the era of computation. In the past decades, several research works have been presented for optimization especially in the field of data mining. This paper addresses the implementation of bio-inspired optimization techniques for machine learning based data mining classification by four different optimization algorithms. The stochastic problems are overcome by training the neural network model with techniques such as barnacles mating , black widow optimization, cuckoo algorithm and elephant herd optimization. The experiments are performed on five different datasets, and the outcomes are compared with existing methods with respect to runtime, mean square error and classification rate. From the experimental analysis, the proposed bio-inspired optimization algorithms are found to be effective for classification with neural network training.
Reflective Teachers
Authors: Kundu Arnab , Bej Tripti
Published: November 2021

This study sought to investigate the Indian trainee teachers’ perception of the 21st century skills, to what extent these skills were integrated into teacher education programs, and challenges to their integration. The study followed a mixed approach comprising of both quantitative (e. g. descriptive survey) and qualitative (e.g., interview) research methods taking 500 trainee teachers from 50 teachers’ training colleges using a stratified random sampling technique. Data were analyzed descriptively and inferentially. Findings revealed that few skills were partially integrated while others were poorly integrated, significant differences were found in the ingestion of these skills between trainees of private and government teacher training colleges, and thereby, hampering the aim of making teachers reflective. The study also noted the challenges in integrating these skills that will provide a valuable reference for teacher education curriculum planning and implementation with a view of providing a holistic educational experience among trainee teachers across countries.
A Comparative Study of Energy Big Data Analysis for Product Management in a Smart Factory
Authors: Salman Rahman A. B. M. , Myeongbae Lee , Jonghyun Lim , Cho Yongyun , Changsun Shin
Published: November 2021

Energy has been obtained as one of the key inputs for a country's economic growth and social development. Analysis and modeling of industrial energy are currently a time-insertion process because more and more energy is consumed for economic growth in a smart factory. This study aims to present and analyse the predictive models of the data-driven system to be used by appliances and find out the most significant product item. With repeated cross-validation, three statistical models were trained and tested in a test set: 1) General Linear Regression Model (GLM), 2) Support Vector Machine (SVM), and 3) boosting Tree (BT). The performance of prediction models measured by R2 error, Root Mean Squared Error (RMSE), Mean Absolute Error (MAE), and Coefficient of Variation (CV). The best model from the study is the Support Vector Machine (SVM) that has been able to provide R2 of 0.86 for the training data set and 0.85 for the testing data set with a low coefficient of variation, and the most significant product of this smart factory is Skelp.
Bromatological composition and ruminal degradability of Xaraés palisade grass under grazing in integrated systems
Authors: Silva Francyelle Ruana Faria da , Salman Ana Karina Dias , Cruz Pedro Gomes da , Porto Marlos Oliveira , Cavali Jucilene , Ferreira Elvino , Souza Elaine Coimbra de , Carvalho Giovanna Araújo de
Published: November 2021

To evaluate the bromatological composition and ruminal degradability of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF) and acid detergent fiber (ADF) of Xaraés palisade grass (Urochloa brizantha ‘Xaraes’ syn Brachiaria brizantha) under grazing in integrated crop, livestock (ICL), and forest (ICLF) systems, we conducted an in situ degradability trial in randomized blocks with three non-lactating 3/4 Gyr × 1/4 Holstein cows, provided with ruminal cannula. The management of Xaraés palisade grass was similar in both systems, differing only regarding shading in the ICLF system provided by eucalyptus trees (average 65% crown cover). Grass samples were incubated for 0, 3, 6, 9, 12, 24, 36, 48, 72, and 96 hours. Considering the passage rate 2% h-1, the Xaraés palisade grass of ICL system had greater NDF effective degradability in relation to ICLF (46.38% vs 44.98%). However, the palisade grass CP potential degradability was greater in the ICLF than in the ICL system (68.92% vs. 65.40%). The presence of trees in the pasture has effect on nutritional traits of the Xaraés palisade grass, increasing its protein content and degradability and reducing its fiber degradability.
Egg quality and coccidiosis infestation in three production systems for laying hens
Authors: Vakili Reza , Salahshour Ahmad , Zanganeh Ali
Published: November 2021

A total of 240 white Shaver laying hens from 22 to 34 weeks of age were assigned to 3 treatments and 5 replications. The treatments included: i) Conventional (hens were kept in experimental building without access to outdoor area and fed with the conventional diet), ii) Semi-organic (hens were kept in experimental building with access to outdoor area and fed with the organic diet plus amino acids and vitamin-minerals supplement), and iii) Organic (hens were kept in experimental building with access to outdoor and fed with the organic diet). The results showed statistically significant differences in the feed intake, egg production, egg mass, egg weight, and change body weight(g) means among the treatments (p < 0.05). The hens kept in the organic treatment had fecal highest contain of oocytes coccidia (p < 0.05). The yolk color index and shell strength in the organic treatment significantly increased in comparison with that of other treatments (p < 0.05). The highest HDL was in the semi-organic and organic treatments (p < 0.05). The lowest egg yolk cholesterol concentration was found in hens kept in the semi-organic and organic treatments (p < 0.05). It is concluded that organic production system is useful for improving egg quality.
The adoption of good practices of handling improves dairy calves welfare: Case study
Authors: Silva-Antunes Livia Carolina Magalhães , Costa Mateus José Rodrigues Paranhos da
Published: November 2021

The aim of this study was to assess the effect of the adoption of a set of good practices of handling on dairy calves welfare. Data were retrieved from the records of a commercial farm, considering three periods: Conventional handling (CH, 12 mo.), transitional period (TP, 4 mo.), and good practices handling (GPH, 12 mo.). During CH calves were kept in individual pens, milk-fed in open pails and subjected to abrupt weaning; while during TP and GPH they were kept in groups, milk-fed in nipple-pails, brushed for 5 min. once a day, and subjected to progressive weaning. TP was assumed as a training period necessary for GPH implementation. The percentages of calves treated with antibiotics and numbers of deaths per month were used as indicators of calves welfare. Statistical analysis was performed using a logistic regression model to compare the number of deaths per month between CH and the other periods. Chi-square test was used to compare the percentage of animals treated with antibiotics per month. Results showed that CH had a higher risk of calf's death then TP and GPH, as well as a higher percentage of animals treated with antibiotics. In conclusion, the adoption of good practices of handling improved dairy calves welfare.
Occurrence of Neoechinorhynchus curemai (Acanthocephala: Neoechinorhynchidae) in Prochilodus nigricans (Characiformes: Prochilodontidae), in southwestern Amazon
Authors: Virgilio Lucena Rocha , Lima Fabricia da Silva , Negreiros Luciano , Takemoto Ricardo Massato , Camargo Luís Marcelo Aranha , Meneguetti Dionatas Ulises de Oliveira
Published: November 2021

Prochilodus nigricans is extensively exploited in fishing and aquaculture activities in the Brazilian Amazon, it is the definitive host for Neoechinorhynchus curemai Noronha, 1973. Thus, the present study aimed to evaluate the occurrence of N. curemai in P. nigricans and the parasite-host relationship in three rivers (Juruá, Crôa and Môa) in the municipality of Cruzeiro do Sul, state of Acre, Brazil. Fish were caught, weighed, measured, and subjected to necropsy, and the gastrointestinal tract and viscera were analyzed. A total of 178 specimens of N. curemai were found in 61 infected fish, with the (p= 58.62%). The prevalence, mean intensity, and mean abundance were higher in hosts from the Môa River, and lower from the Juruá River. Regarding the length-weight relationship, the b-value did not differ statistically from three (b=3) for fish species in the three locations, nor in parasitized and non-parasitized species. In addition, growth was considered isometric, and in the case of the relative condition factor, there was no difference in fish hosts between the three rivers. The correlation between parasite intensity, condition factor, length, and weight of P. nigricans was not significant. Thus, this parasite infestation varied between the habitats. However, this did not influence the growth and development of the hosts.
Mundo problemático e os desafios de organização da experiência educativa nos problemas complexos incertos
Authors: Campos Ibrahim Camilo Ede , Matias Lima Walter
Published: November 2021

O presente artigo objetiva apresentar o modelo de organização da experiência educativa segundo a pedagogia do problema de Michel Fabre (1948-), filósofo francês, com foco na problematização das questões sociais polêmicas. Diante dos desafios de um mundo problemático que interroga os sujeitos educativos em relação ao conteúdo, ao modo e ao tempo das relações ensino-aprendizagem, cabe à Educação fornecer ao aluno e desenvolver junto a ele duas instrumentalidades metafóricas interdependentes que atinem à organização bussolar e cartográfica da experiência. A bússola representa a funcionalidade cognitiva e metodológica que estrutura formalmente o processo de problematização. O suporte cartográfico constitui o substrato material e cultural desse processo, a permitir a localização, a orientação e a discriminação de limites dos itinerários educativos a serem percorridos pelo discente, com o auxílio do docente. Na problematização das questões sociais polêmicas, a associação de múltiplas coordenadas éticas, científicas, políticas, econômicas e culturais aos saberes racionais e estáveis ensinados e reproduzidos na escola altera o conjunto das condições e dos dados mobilizados para a construção ou para a resolução do problema. O tratamento dessas questões complexas enfrenta obstáculos reducionistas contra os quais se propõe uma estratégia educativa metodológica respeitosa da pluralidade de posições argumentadas e divergentes. Em um ethos escolar democrático e avesso a injuntividades normativas, tampouco receptivo a relativismos que impeçam a abertura dialógica da experiência fundada na intersubjetividade, educar para a problematização da vida em sociedade implica o dimensionamento regulatório e prudencial dos fatos e dos valores nela imersos. Esse exercício, a ser realizado conjuntamente pelos sujeitos educativos, propicia ao discente, diferentes possibilidades de percursos e de escolhas conducentes à autoconstituição ética, mister indeclinável neste mundo problemático.
In vivo protective effect of cinnamon aqueous extract in carbon tetrachloride-treated male albino rats
Authors: Baothman Othman , Nagaty Bhaa , Zamzami Mazin , Al-Talhi Hasan
Published: November 2021

The liver as an organ is important for the metabolism of drugs and toxins. However, it is not immune from environmental insults. Exposure of liver cells to carbon tetrachloride (CCl4) results in the generation of tricholoromethyl radicals, which induce liver toxicity. This study aims at investigating the ameliorative effect of the cinnamon aqueous extract (CAE) against CCl4-induced hepatotoxicity in male albino rats. Hepatotoxicity was induced in rats through the intraperitoneal administration of 0.5 mL kg-1 body weight of CCl4. The analyses of the results obtained showed significant reduction in the levels of serum biochemical markers for 400 and 600 mg kg-1 bw of CAE protected rats as compared with CCl4 group. In addition, CAE administration reversed liver tissue damaged via increased antioxidants markers. Histopathological examination of CAE treatment on rats showed improved changes to the liver damage caused by CCl4 with no evidence of steatosis and inflammation. This result hence suggests that CAE has marked hepatoprotective and healing activities against CCl4-induced liver damage and could serve as a suitable candidate in drug discovery for the treatment of liver toxicity.
Activated platelets in central venous catheters: a flow cytometry and numerical simulation approach
Authors: Lucas Thabata Coaglio , Carvalho Maria das Graças , Duarte Rita Carolina Figueiredo , Haniel Jonathas , Trindade Sissy Araújo , Ottoni Marcelo Henrique Fernandes , Santos Luara Isabela dos , Huebner Rudolf
Published: November 2021

The central venous catheter that is inserted in patients undergoing hemodialysis can cause hemodynamic instability and trigger complications such as thrombus formation. The objective of this study was to investigate hemostatic and numerical influences on thrombus formation in patients undergoing hemodialysis with a central venous catheter. Participants were assigned to three groups: I: clinical and laboratorial healthy individuals matched by sex and age (controls); II: participants after one month of insertion of the catheter and III: participants after 4 months of insertion of the catheter. Platelet activation was investigated by GPIIb/IIIa and p-selectin expressions using flow cytometry. A three-dimensional model of the catheter was constructed in the numerical simulation for the calculation of partial differential equation of a platelet activation model. A significant difference was detected by the expression of p-selectin comparing the group I (33.42 ± 4.74), group II (40.79 ± 5.54) and group III(51.00 ± 7.21) (p < 0.0001). The median values for GPIIb/IIIa were 10426 (10029-10721), 13921 (13412-15652) and 19946 (18714-21815) after catheter insertion (p < 0.0001), for groups I, II and III, respectively. Excluding the first arterial orifice, venous orifices tend to have greater platelet activation when compared to the other arterial orifices. The results of this study showed the influence of arterial and venous lateral orifices in stimulating the development of thrombi associated with the activation of platelet markers the longer the catheter was used
The Physicochemical and sensory characteristics of Coppa with Bifidobacterium animalis ssp. Lactis (BB12) probiotic
Authors: Camargo Vitoria Polli , Catanio Nayara , Marins Annecler Rech de , Bergamasco Rita de Cassia , Gomes Raquel Guttierres , Feihrmann Andresa Carla
Published: November 2021

Motivated by the growing demand for functional foods, probiotics added to food products is a reality in the market. Its application in fermented sausages is considered promising, as its processing does not use heat treatment and with that there is no considerable loss of these microorganisms. In this study, the application of microencapsulated Bifidobacterium animalis ssp. lactis (BB12) was carried out in coppa. Three treatments were developed, consisting of control (C) without probiotic, BB1 with the addition of probiotic and 0.02% curing salt, and BB2 with probiotic and 50% reduction in curing salt (0.01%). Subsequently, possible changes in the physicochemical and sensory characteristics were analyzed, as well as the viability of the culture in the fermented product. All samples were presented according to the Brazilian legislation for the attributes of moisture, protein, and lipids. Probiotics showed a positive influence on the stabilization of lipid oxidation and microencapsulated probiotics proved to be viable after the ripening period of 30 days in treatment BB2. There was no significant difference between the samples for sensory analysis, so it is possible to state that the addition of BB12 is an alternative to obtain a product with all the benefits of functional foods.
Antioxidant capacity and evaluation of total phenolic content of optimized blueberry (Vaccinium corymbosum) wine
Authors: Cabanillas-Bojorquez Luis Angel , Valdez-Baro Octavio , Gutierrez-Grijalva Erick Paul , Valdez-Torres Jose Benigno , Castillo-López Ramón Ignacio , Heredia José Basilio
Published: November 2021

Blueberry is a fruit consumed fresh and as an ingredient in formulations such as jam, juice, and wine. Wine is a widely consumed beverage and produced from different berries and fruits. Blueberry wine contains bio-compounds that could have a beneficial effect on health. Therefore, this study aimed to optimize blueberry wine by two response variables (total soluble solids and fermentation time) to obtain the highest alcohol percentage, pH, and lightness. In order to optimize the fermentation process, a central composite design was used. The optimized blueberry wine was obtained at total soluble solids of 25°Brix and fermentation time of 16 d. The optimized blueberry characteristics estimated were: alcohol percentage of 11.91%, pH of 2.98, and lightness (L*) of 26.22, and the optimized blueberry characteristics experimental were: alcohol percentage of 11.93±0.02%, pH of 2.97±0.01, and L* of 25.42±1.80. The optimized blueberry wine had a total phenolic content of 360.27±18.09 mg of gallic acid equivalents L-1, total anthocyanin content of 46.27±3.66 mg cyanidin-3 glucoside L-1, antioxidant capacity by ABTS and DDPH assays of 1,539.8±92.18 and 1,688.07±57.57 mM Trolox equivalent L-1, respectively. The results suggest that optimized blueberry wine can be considered a drink with potential health applications.
Reliability analysis using experimental statistical methods and AIS: application in continuous flow tubes of gaseous medium
Authors: Outa Roberto , Chavarette Fábio Roberto , Gonçalves Aparecido Carlos , Silva Sidney Leal da , Mishra Vishnu Narayan , Panosso Alan Rodrigo , Mishra Lakshmi Narayan
Published: November 2021

The motivation for the development of this work arose from the observation of maintenance in pressure vessels, which are categorized as highly hazardous security risk products. The costs of detecting failures in the production systems allow the result of the process to be safe and of good quality, using standardized tests internally within the company. The main objective of this work demonstrates the efficiency and robustness of the artificial immune system (AIS) of negative selection in the detection of failures by recognizing the vibration signals and categorizing them in the degree of probability and level of severity of failures. The intrinsic objectives are the application of the elimination of signal noise by the Wiener filter, and the processing of data-Wiener data using experimental statistics. The result of this work successfully demonstrates the precision between the experimental statistical and AIS techniques of negative selection; the robustness of the algorithm in precision and signal recognition; and the classification of the degree of severity and probability of failure
Method of Predicting Pitting Fatigue Utilizing an Eddy Current Sensor
Authors: Tsunoda Wataru , Ohno Kosaku , Iwamoto Yasuhiro
Published: November 2021

This paper proposes a method of predicting pitting fatigue in gear material by utilizing an eddy current sensor. The proposed method is based on the theory behind mechanism of pitting occurrence, i.e., cracks occur on a contact surface and lead to pitting. The eddy current sensor detects the cracks as the pulse, which is added to the synchronous vibration. The sum of the harmonics of the sensor output was measured as the damage value on the contact surface. The damage value increased over the course of the experiment. We found that pitting occurred at a damage value of 15 dB in all tests. The results show that pitting occurrences can be estimated by measuring the determined damage value.
The Impact of Transformational Leadership on Talent Retention with special reference to Information Communication Technology Industry in Sri Lanka
Authors: Edirisooriya Waruni Ayesha
Published: November 2021

This paper employs a systematic and comprehensive review to understand the global problem of talent retention which is also seen as the pivotal problem in knowledge economy. On the other hand, organizations face the challenge of attracting and retaining talented employees and consequently they are dealing with talent scarcity nowadays. Thus, the role of leaders in attracting and retaining talented workers in their organizations has become critical. Nevertheless, the effect of leadership on talent retention needs to be investigated in the context of the Information Communication Technology (ICT) industry in Sri Lanka. Using a survey strategy, this study administrated cross sectional questionnaires to collect data from executive level employees who work in the ICT industry in Sri Lanka. This paper critically examined the impact of transformational leadership on talent retention in the information communication technology industry in Sri Lanka. Further, the results indicate that idealized influence behaviour, inspirational motivation behaviour, intellectual stimulation behaviour and individual consideration behaviour of the supervisor have a strong positive impact on the retention of talented employees in the ICT industry in Sri Lanka. Accordingly, transformational leadership could be used as a strong retention strategy not only in the ICT industry but also in other contexts.
The Autoimmune Risk R262W Variant of the Adaptor SH2B3 Improves Survival in Sepsis
Authors: Allenspach Eric J , Shubin Nicholas J , Cerosaletti Karen , Mikacenic Carmen , Gorman Jacquelyn A , MacQuivey Matthew A , Rosen Aaron B I , Timms Andrew E , Wray-Dutra Michelle N , Niino Kerri , Liggitt Denny , Wurfel Mark M , Buckner Jane H , Piliponsky Adrian M , Rawlings David J
Published: November 2021

The single-nucleotide polymorphism (SNP) rs3184504 is broadly associated with increased risk for multiple autoimmune and cardiovascular diseases. Although the allele is uniquely enriched in European descent, the mechanism for the widespread selective sweep is not clear. In this study, we find the rs3184504*T allele had a strong association with reduced mortality in a human sepsis cohort. The rs3184504*T allele associates with a loss-of-function amino acid change (p.R262W) in the adaptor protein SH2B3, a likely causal variant. To better understand the role of SH2B3 in sepsis, we used mouse modeling and challenged SH2B3-deficient mice with a polymicrobial cecal-ligation puncture (CLP) procedure. We found SH2B3 deficiency improved survival and morbidity with less organ damage and earlier bacterial clearance compared with control mice. The peritoneal infiltrating cells exhibited augmented phagocytosis in Sh2b3−/− mice with enriched recruitment of Ly6Chi inflammatory monocytes despite equivalent or reduced chemokine expression. Rapid cycling of monocytes and progenitors occurred uniquely in the Sh2b3−/− mice following CLP, suggesting augmented myelopoiesis. To model the hypomorphic autoimmune risk allele, we created a novel knockin mouse harboring a similar point mutation in the murine pleckstrin homology domain of SH2B3. At baseline, phenotypic changes suggested a hypomorphic allele. In the CLP model, homozygous knockin mice displayed improved mortality and morbidity compared with wild-type or heterozygous mice. Collectively, these data suggest that hypomorphic SH2B3 improves the sepsis response and that balancing selection likely contributed to the relative frequency of the autoimmune risk variant.
Concurrence of Helicobacter pylori Infection and Its Associated Factors in Korean Couples
Authors: Choi Jiwoong , Kang Jihun
Published: November 2021

Background: This study evaluated the prevalence of Helicobacter pylori infection and the risk factors associated with H. pylori transmission among spouses.Methods: We assessed the spousal concurrence of H. pylori infection using the Campylobacter-like organism (CLO) test under gastro-endoscopy in 132 couples. Based on the CLO test results, participants were categorized into H. pylori concurrent and independent groups. The chi-square test and Student t-test were performed for demographic comparisons between the concurrent and independent H. pylori groups. In addition, multivariate logistic regression analysis was performed to identify factors associated with concurrent H. pylori infection.Results: The study revealed that the concurrence rate of H. pylori infection was 42.4% in married Korean couples. The odds ratio (OR) derived from the concurrence of H. pylori infection tended to decrease in older couples (OR, 0.975; 95% confidence interval [CI], 0.949–1.002; P=0.072). Gastric erosion was also associated with a decreased OR for concurrent infection (OR, 0.488; 95% CI, 0.295–0.808; P=0.005). Conversely, active duodenal ulcers were associated with an increased OR for concurrent infections (OR, 6.501; 95% CI, 1.267–33.346; P=0.025). Duodenal ulcer scars tended to increase the OR of concurrent infections (OR, 1.392; 95% CI, 0.815–2.380; P=0.226).Conclusion: Spousal transmission and concurrence of H. pylori infection were negatively associated with gastric erosion; however, they were positively associated with active duodenal ulcers. Further studies are warranted to elucidate the mechanisms underlying these findings.