Miracle-dz/UniFAR-FTUs huggingface dataset:
Mise en forme par emboutissage en température d’un alliage d’aluminium Aa5754-o

Les economies d'energie et l'allegement des vehicules ont conduit les fabricants automobiles a se tourner vers de nouveaux materiaux metalliques, de plus en plus complexes, en lieu et place des aciers traditionnellement utilises. Dans ce contexte, les alliages d'aluminium, du fait de leurs bonnes proprietes mecaniques et de leur bon rapport resistance/masse, connaissent un essor important, notamment pour la fabrication des elements de carrosserie. Cependant, le retour elastique et l'apparition de defauts d'aspect consecutifs aux operations de mise en forme complexifient la mise au point et allongent les delais de fabrication tout en impactant le prix de revient. Dans ce contexte, la mise en forme par emboutissage en temperature, bien que plus compliquee a mettre en oeuvre, semble etre une alternative envisageable. En effet, l'augmentation de la temperature permet de reduire le retour elastique tout en diminuant les efforts mis en jeu sur les outils. Le materiau choisi est un alliage d'aluminium-magnesium (AA5754-O) habituellement employe dans le secteur automobile pour la realisation de panneaux interieurs d'ouvrants. Ce materiau presente, a temperature ambiante, l'inconvenient majeur d'etre sujet a l'effet Portevin-Le Chatelier (PLC), se manifestant par des stries a la surface des pieces embouties, empechant ainsi son utilisation pour des pieces d'aspect malgre un cout attrayant par rapport a d'autres alliages d'aluminium. La caracterisation experimentale de ce materiau a ete effectuee dans une gamme de temperature allant de 20 a 200~°C, en traction puis en cisaillement simple. Ces deux trajets de chargement ont permis, par le biais d'une mesure optique des deformations, de definir la gamme d'existence de l'effet PLC en fonction de la temperature et de la vitesse de deformation. Parallelement, la formabilite de ce materiau a ete evaluee a partir d'essais d'emboutissage de godets cylindriques. Les contraintes internes generees au cours du procede, a l'origine du retour elastique, sont caracterisees a l'aide du test de Demeri, consistant a mesurer l'ouverture d'un anneau decoupe dans le mur du godet. Afin d'etudier l'influence de la temperature sur l'emboutissabilite et le retour elastique, un dispositif, adaptable sur une machine d'essai BUP200, a ete mis au point pour mettre en forme des godets jusqu'a 200°C. Ce dispositif permet par le biais d'inserts interchangeables, revetus (ou non) par des films minces W-Ti-N, de modifier les proprietes de contact tole/outil et d'analyser l'influence du frottement sur le procede et les consequences sur le retour elastique, en fonction de la temperature et du type d'insert utilise. Les simulations numeriques de ce procede a temperature ambiante ont ete effectuees avec le code de calcul Abaqus, en utilisant la base de donnees experimentale pour identifier les coefficients des lois de comportement du materiau. Les simulations numeriques sont alors confrontees aux resultats experimentaux en termes d'effort d'emboutissage, de champs de deformation, d'epaisseurs de godet, de cornes d'emboutissage et de retour elastique.
Evaluation of the efficacy and safety of Ganoderma lucidum mycelium-fermented liquid on gut microbiota and its impact on cardiovascular risk factors in human

Ganoderma lucidum is a Chinese traditional medicine with various bioactivities. However, the impacts of a Ganoderma lucidum mycelium-fermented liquid (GLFL), as a promising alternative product, on the gut microbes and cardiovascular risk factors have not been explored in humans to date. In this study, the composition of polysaccharides in GLFL was analyzed, and eight volunteers were fed with GLFL to investigate its influence on gut microbes and cardiovascular risk factors. High-throughput 16S rRNA gene sequencing technique was utilized to investigate the effects of GLFL on the diversity of the bacterial communities and the composition of gut microbiota. The results demonstrated that GLFL significantly altered β diversity and several phyla of gut microbiota in volunteers. Moreover, GLFL provided protection to humans by promoting the growth of probiotics, incorporating genus Lactobacillus (p < 0.05), and reducing pathogens containing genus Campylobacter and Aggregatibacter (p < 0.05); however, GLFL also had detrimental effects as it increased the population of Firmicutes/Bacteroidetes and opportunistic pathogens including genus Acinetobacter, Pseudomonas, Serratia, Stenotrophomonas, Peptococcus and S24-7 (p < 0.05) and reduced that of probiotics genus Lactococcus. Finally, we found that GLFL reduced plasma low-density lipoprotein cholesterol (LDL-c) in volunteers. This is helpful for further understanding the effect of Ganoderma lucidum or its related products on human body.
A RAVE investigation on galactic open clusters. II, Open cluster pairs, groups and complexes

CONTEXT: It is generally agreed upon that stars form in open clusters (OCs) and stellar associations, but little is known about structures in the Galactic OC population; whether OCs and stellar associations are born isolated or if they prefer to form in groups, for example. Answering this question provides new insight into star and cluster formation, along with a better understanding of Galactic structures. AIMS: In the past decade, studies of OC groupings have either been based solely on spatial criteria or have also included tangential velocities for identifications. In contrast to previous approaches, we assumed that real OC groupings occupy a well defined area in the sky and show similar velocity vectors. For the first time, we have used 6D phase-space information, including radial velocities from the RAdial Velocity Experiment (RAVE) and other catalogues, for the detection of OC groupings. We also checked the age spread of potential candidates to distinguish between genuine groupings and chance alignments. METHODS: We explored the Catalogue of Open Cluster Data (COCD) and determined 6D phase-space information for 432 out of 650 listed OCs and compact associations. The group identification was performed using an adapted version of the Friends-of-Friends algorithm, as used in cosmology, with linking lengths of 100 pc and 10–20 km s-1. For the verification of the identified structures, we applied Monte Carlo simulations with randomised samples. RESULTS: For the linking lengths 100 pc and 10 km s-1 , we detected 19 groupings, including 14 pairs, 4 groups with 3−5 members, and 1 complex with 15 members. The Monte Carlo simulations revealed that, in particular, the complex is most likely genuine, whereas pairs are more likely chance alignments. A closer look at the age spread of the complex and the comparison between spatial distributions of young and old cluster populations suggested that OC groupings likely originated from a common molecular cloud.
BIOACTIVITY OF ESSENTIAL OILS FROM MEDICINAL PLANTS OF CAMEROON AND THEIR COMBINATION AGAINST INFANT DIARRHEA INDUCED BY BACTERIA

Background: In Cameroon, one of the most common childhood illnesses after malaria is diarrhea, which generally has a bacterial origin. In rural areas, plant utilization is often one of the first ways of treatment though, with no scientific bases. Therefore, the aim of this work was to evaluate the antibacterial activities of nine essential oils (EOs) of Cameroonian plants and their combinations against some strains responsible for diarrhea. Material and Methods: To determine the bacterial species generally involved in childhood diarrheal infections, a retrospective study was done. The EOs of Eucalyptus globulus, Cymbopogon citratus, Xylopia aethiopica, Thymus vulgaris, Ocimum canum, Cananga odorata, Citrus medica, Citrus paradisi and Citrus reticulata were screened against the most incriminated bacterial species using the spot-on-agar test and microdilution methods. Some of the EOs with good antibacterial activity were analyzed by Gas Chromatography and Gas Chromatography/Mass Spectrometry. According to their composition, Thymus vulgaris and Eucalyptus globulus EOs were combined with that of Cymbopogon citratus using the ratios 2/1; 1/1; 1/2 (w/w) and tested against on bacterial growth. Results: The retrospective study showed that 10.8% of infant diarrhea was caused by Escherichia coli, Salmonella typhimurium and Salmonella paratyphimurium. The Minimum inhibition Concentrations (MIC) of single EOs was between 0.78 and 25 mg/mL which were observed to be greater than those of their combinations which ranged between 0.195 and 6.52 mg/mL. The active essential oils contained mainly hydrocarbonated and oxygenated monoterpens. Conclusion: The good antibacterial effects of two Thymus combinations Th1 and Th2 observed on Salmonella typhimurium and Salmonella paratyphimurium suggest their used in aromatherapy to cure bacterial diarrhea.
Modelling Circumpolar Deep Water intrusions on the Amundsen Sea continental shelf, Antarctica

Results are presented from an isopycnic coordinate model of ocean circulation in the Amundsen Sea, focusing on the delivery of Circumpolar Deep Water (CDW) to the inner continental shelf around Pine Island Bay. The warmest waters to reach this region are channeled through a submarine trough, accessed via bathymetric irregularities along the shelf break. Temporal variability in the influx of CDW is related to regional wind forcing. Easterly winds over the shelf edge change to westerlies when the Amundsen Sea Low migrates west and south in winter/spring. This drives seasonal on‐shelf flow, while inter‐annual changes in the wind forcing lead to inflow variability on a decadal timescale. A modelled period of warming following low CDW influx in the late 1980's and early 1990's coincides with a period of observed thinning and acceleration of Pine Island Glacier.
Strategic Management and Firm Performance: A Study of Selected Manufacturing Companies in Nigeria

The study of strategic management has drawn so much attention among business practitioners and academic researchers in the last two decades as globalization came fully into limelight. However, in Nigeria, there are few empirical studies conducted to investigate the relationship between strategic management and firm performance. Thus, the main objective of this study was to provide further evidence on the effects of strategic management (SM) on the performance of manufacturing industries in Nigeria. Five large-scale quoted manufacturing firms located in Lagos metropolis were selected. The study relied on primary data which were obtained using structured questionnaire administered to 50 purposively selected respondents of the selected firms. The data collected were analysed using Analysis of Variance (ANOVA) and correlation analysis as well as descriptive analysis in pursuance of the stated specific objectives of the study. The result showed that strategic management had significant effects on the profitability and operational performance of the selected manufacturing firms. Also, strategic management had positive relationship with the level of competition of the firms. This study concluded that the practice of strategic management is sine qua non in boosting firm performance in the manufacturing industries in Nigeria. Keywords: Strategic Management, Profitability, Operational Performance, Level of Competition
ELEMENTARY SCHOOL TEACHER’S OBSTACLES IN THE IMPLEMENTATION OF PROBLEM-BASED LEARNING MODEL IN MATHEMATICS LEARNING

This study aims to describe the teachers' obstacles in applying problem-based learning model in Mathematics learning of elementary schools. This method of this study was a qualitative descriptive. The data sources were three third-grade teachers of the elementary schools. The data analysis consisted of stages of data collection, data reduction, data presentation, and data verification. The results of the study show: in the planning stage, obstacles occur when teachers need careful preparation in making learning plans and determining problems at the beginning of learning. In the implementation phase, the obstacle that occurs is a lack of time in maximizing activities in all phases. The teacher finds it difficult to direct students to problems that require solutions. Teachers need enough time to organize students in group activities. Also, they have difficulty dividing time when guiding groups because students are still waiting for the teacher to explain to the group without doing it themselves first. Another difficulty faced is making students actively ask questions or respond to learning activities, and feedback from problem-solving is less profound.
SORPTION OF ORGANIC PHOSPHORUS COMPOUNDS IN ATLANTIC COASTAL PLAIN SOILS

Organic phosphorus (P) can comprise a significant amount of the total P in animal wastes, yet there is little information on the potential for organic P to be transferred from soils to watercourses. We examined the adsorption of organic P compounds to soils typical of the southeastern United States, i.e., Blanton Sand (loamy, siliceous, thermic, Grossarenic Paleudult), Cecil sandy clay loam (fine, kaolinitic, thermic, Typic Kanhapludult), and a Belhaven sandy loam (loamy, mixed, dysic, thermic, Terric Medisaprist). The behavior of four organic P compounds was studied: adenosine 5′-triphosphate (ATP), adenosine 5′-diphosphate (ADP), adenosine 5′-monophosphate (AMP), and inositol hexaphosphate (IHP); while KH2PO4 (ortho-P) was used as an inorganic reference. Laboratory studies were conducted to determine the effects of concentration (0–130 μg P mL−1), pH (4.6–7.6), and soil properties on P adsorption. All the organic P compounds had greater adsorption than KH2PO4 on the Blanton and Cecil soils at all concentrations and ranges of pH. In the Belhaven soil, IHP had the greatest sorption followed by KH2PO4 and the nucleotides (ATP, ADP, and AMP, respectively). Adsorption of organic P was positively correlated with soil organic matter and Fe and Al contents. The greater sorption of some organic P compounds over that of ortho-P suggests that these compounds may pose less of a threat to water quality, although this preferential sorption may increase soluble P in situations where there is displacement of ortho-P by organic P added in manures.
Listen to the Map User: Cognition, Memory, and Expertise

Abstract This paper aims to extend current research regarding map users’ cognitive processes while working with screen maps. The described experiment investigates how (expert and novice) map users retrieve information from memory that was previously gathered from screen maps. A user study was conducted in which participants had to draw a map from memory. During this task, they were instructed to say out loud every thought that came into mind. Both user groups addressed the same general cognitive structures and processes to solve the task at hand. However, the experts’ background knowledge facilitated the retrieval process and allowed them to derive extra information through deductive reasoning. The novices used more descriptive terms instead of naming the objects and could remember less, and less detailed map elements.
DDA/TDB liposomes containing soluble Leishmania major antigens induced a mixed Th1/Th2 immune response in BALB/c mice

Objective(s): Leishmaniasis is a complex parasitic disease that represents a major public health problem. Despite numerous attempts over the past decades, yet there is no effective vaccine against human leishmaniasis probably due to the lack of suitable adjuvants. In this study, a first generation liposomal-based Leishmania vaccine was developed using soluble Leishmania major antigens (SLA) and a, U-trehalose6, 6'- dibehenat (TDB) as an immunostimulatory adjuvant. In this liposome structure, the cationic lipid Dimethyldioctadecylammonium (DDA) provides intrinsic adjuvant activity and cholesterol was added as a membrane stabilizer. Liposomes containing SLA were prepared. Materials and Methods: BALB/c mice were subcutaneously (sc) immunized with Lip (DDA/TDB/CHOL)-SLA+, Lip (DDA/TDB)-SLA+, Lip (DDA)-SLA+, Lip (DDA/CHOL)-SLA+, SLA or Tris-HCl buffer. Immunization was done every two weeks for three weeks. The immunized mice were then challenged sc in the left footpad with 1×106 stationary phase L. major promastigotes (50 il), at 2 weeks after last booster injection.Results: mice immunized with any of the liposomal formulations containing SLA (Lip-SLA+), substantially increased footpad swelling and parasite loads of foot and spleen with no significant difference compared to Tris-HCl buffer or SLA alone. Lip-SLA+ formulations induced a mixed Th1/Th2 immune response characterized by IFN-a and IL-4 production as well as high levels of IgG1 anti-Leishmania antibody. Conclusion: immunization with liposomes containing DDA and/or TDB in combination with SLA induces a mixed Th1/Th2 immune response and is not an appropriate strategy for preferential induction of a Th1 response and protection against leishmaniasis.
From higher education to the labour market: employability across five EU countries

The high youth unemployment rates recorded in some European countries, suggest that graduates face some difficulties in meeting the needs of employers. This study aims to find the explanations for the existing mismatch between the skills that students are learning in Higher Education and those that companies are looking for to hire. The present study analyses data of five European countries: Portugal, Spain, Greece, Latvia and Poland. The data collection was performed, under the #EuropeHome project, through three questionnaires administered to three target groups: students and academics of the areas of engineering, business management and economics studies, and also the entrepreneurs. From the qualitative analysis of the responses that was made, which can be concluded that the interpersonal, learning and communication skills are the group which the three audiences consider essential to improve the employability of the graduates. In turn, in relation to the skills that graduates lack the most, the three target groups pointed the personal, interpersonal and communication skills. In quantitative terms, it was implemented a PCA, whose outputs support the previous indicators and it also adds that, the solutions will have to be based on cooperation between both sides, through the preparation of relevant courses for the labour market, through the internships and appropriate joint monitoring by the university and company together, to help guiding students in their transition from education life to the labour market. These findings are common to the five countries, whether related to the main skills in focus, or the solutions to be taken into account in order to reduce the skills mismatch between the graduates and the needs of employers.
To investigate the technical and co-management aspects of mud eel (Monopterus cuchia) culture by ethnic (Adivasi) communities in the Northern Bangladesh

The current study was undertaken to observe production potential of mud eel in participatory semi-intensive culture systems in Noukuchi rice field (treatment T J), Sherpur and Gohalidew Ponds (treatment Ti), Netrokona with an area of 0.20 and 0.06 ha, respectively. The water bodies were stocked with cuchia fingerlings (95.96±3.21 and 95.45±4.02 g) at a density of 5187.ha- 1 and 12866.ha- 1 , respectively in treatment T1 and T2 for a period of 150 days. Rice field and pond habitat was improved by installing mud-compost hips, bamboo roots; plastic and bamboo-made hollow pipes, and aquatic vegetations. The.fish were fed with 3% bw (1% dead.fish, 1% dry.fish, and 1%jlesh of snails and bivalve) at every alternative day. In addition live carp fry was also added to the system at 15 days interval. In the rice fish system, the individual final weight was 310. 63±17.59 g in 150 days of culture period. The average daily gain, specific growth rate, FCR and survival rate were 1.43±0.08, 0.79±0.23, 1.0±0.0 and 90.0±0.0, respectively. Comparatively, lower growth peiformance of M cuchia was observed in Gohalidew (I'i). The mean differences of gross yield between two treatments was significant (P<0.05). The results of this study indicated that treatment T1 showed significantly higher growth and lower yield (cuchia 1440.0±0.0, and native fish 1122.48±9.32 kg.ha- 1 .I 50 days- 1 ) than treatment T2• The physico-chemical factors were found to be suitable for mud eel culture. M cuchia semi-interiSive culture in rice field and ponds is a good proposition as an aquaculture technology to save the mud eel from declined and enhance the nutritional status and socio-economic improvement of the Adivasi people.
Efficiency of Different Colored Traps Baited with Pheromone in Capturing Tomato Adult Moth, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) during Summer Plantation

Effects of trap color, trap direction and trap position on the tomato moth, Tuta absoluta (Meyrick) captures was evaluated. Each trap was baited with a pheromone capsule type Q lure-TUA®. White pheromone traps caught more moths than yellow, blue, green and red traps. Significant differences between mean catches by white trap and other colored traps were observed. The trap when located at south or center of the infested area caught more moths than when located at west, east or north although there are insignificant differences between mean catches at each direction. The collective catch of T. absoluta moths by the traps rested on the ground was more than that of the two other positions (50 and 100 cm above the ground) where comparison test of catches showed significant differences between 0cm position (rested on the ground) and other two positions.
No effects of homeopathy on somatic cell count, bovine milk yield and composition

This study aimed to evaluate the effect of a homeopathic complex, on the reduction of milk somatic cell count, production of milk, fat percentage and protein percentage of milk in lactating Holstein cows, over a period of three months. Twenty cows, in second parity, were randomly assigned in blocks with two treatments, after an initial period of adaptation in the experimental area for 15 days. The cows were distributed into a control group (that did not receive the homeopathic complex) and a treated (that received the homeopathic complex), evaluated for six test-day records. Laboratory analysis of fat and protein were made via the infrared absorption and somatic cell count by flow cytometry, wherein this latest has been transformed into logarithmic scale for statistical analysis. Analysis of variance to test the effects of treatment, test-day record and the interaction between these factors, was performed through repeated measures over time. For all traits, there was no significant interaction between treatment and test-day record (p > 0.05) and there was no statistical difference (p > 0.05) between the control and treated groups. The use of the homeopathic complex was not effective in reducing somatic cell count of dairy cows, for the trial period of three months. The use of homeopathy did not interfere significantly with milk yield or the protein percentage in Holstein cows.
Dark tourism scholarship: a critical review

Purpose – Commonly referred to as dark tourism or thanatourism, the act of touristic travel to sites of or sites associated with death and disaster has gained significant attention with media imaginations and academic scholarship. However, despite a growing body of literature on the representation and tourist experience of deathscapes within the visitor economy, dark tourism as a field of study is still very much in its infancy. Moreover, questions remain of the academic origins of the dark tourism concept, as well as its contribution to the broader social scientific study of tourism and death education. Thus, the purpose of this invited review for this Special Issue on dark tourism, is to offer some critical insights into thanatourism scholarship.Design/methodology/approach – This review paper critiques the emergence and current direction of dark tourism scholarship.Findings – The author suggests that dark tourism as an academic field of study is where death education and tourism studies collide and, as .