863 research outputs found

    Are skilled women more migratory than skilled men?

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    This paper empirically studies emigration patterns of skilled males and females. In the most relevant model accounting for interdependencies between women and men’s decisions, we derive the gendered responses to traditional push factors. Females and males do not respond with the same intensity to the traditional determinants of labor mobility and gender-specific characteristics of the population at origin. Moreover, being other factors equal, the female willingness to follow the spouse seems to be much more pronounced with respect to the male one. From a quantitative perspective, our model reveals that skilled women are not more migratory than skilled men internationally, thus rejecting the existence of a genetic or social gender gap in international skilled migration.

    The Inhibitory Effect of Lactobacillus acidophilus and Lactobacillus plantarum against Candida albicans Associated with Denture Stomatitis

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    In this study Candida speices was diagnosed in 26 swab samples from patients with denture stomatitis , investigates the antagonism activity of Lactobacillus was investigated against the yeast of Candida albicans in vitro.Results revealed that The inhibition effect of Lactic Acid Bacteria against C.albicans was examined in solid medium, L.plantarum gave higher inhibition average 11mm followed by L.acidophillus with average 9 mm and, L.fermentum , L.casei with averages 7 mm. Whereas the filtrates, the highest inhibition zone were 20 and 16 mm by L. plantarum and L.acidophillus, respectively

    Desmin forms toxic, seeding-competent amyloid aggregates that persist in muscle fibers

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    Desmin-associated myofibrillar myopathy (MFM) has pathologic similarities to neurodegeneration-associated protein aggregate diseases. Desmin is an abundant muscle-specific intermediate filament, and disease mutations lead to its aggregation in cells, animals, and patients. We reasoned that similar to neurodegeneration-associated proteins, desmin itself may form amyloid. Desmin peptides corresponding to putative amyloidogenic regions formed seeding-competent amyloid fibrils. Amyloid formation was increased when disease-associated mutations were made within the peptide, and this conversion was inhibited by the anti-amyloid compound epigallocatechin-gallate. Moreover, a purified desmin fragment (aa 117 to 348) containing both amyloidogenic regions formed amyloid fibrils under physiologic conditions. Desmin fragment-derived amyloid coaggregated with full-length desmin and was able to template its conversion into fibrils in vitro. Desmin amyloids were cytotoxic to myotubes and disrupted their myofibril organization compared with desmin monomer or other nondesmin amyloids. Finally, desmin fragment amyloid persisted when introduced into mouse skeletal muscle. These data suggest that desmin forms seeding-competent amyloid that is toxic to myofibers. Moreover, small molecules known to interfere with amyloid formation and propagation may have therapeutic potential in MFM

    A Right Atrial Mass with Fever and Cutaneous Nodules

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    Primary cardiac tumors, although exceedingly rare, should be considered in the differential diagnosis during workup of any cardiac mass. Extranodal cardiac lymphomas have a natural aggressive course due to delayed diagnosis. We present a 71-year-old male with a dual-chamber pacemaker who presented with fevers and new cutaneous nodules. He was found to have a right atrial primary anaplastic large-cell lymphoma and had a complete metabolic response after chemotherapy. Our case highlights the importance of a multimodality approach in the diagnosis of cardiac tumors and during follow-up after treatment

    Communicating Business Ethics: The Role of Ethics in the Millennial Entrepreneur’s Decision to Start a Business

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    This review paper is an integration and extension of the existing knowledge on Business ethics regarding the perception of entrepreneurs belonging to the Millennial Generation and its role in their decision- making process while establishing a new business. Using the available body of literature, this study aims to determine whether business ethics is perceived as an integral part of the decision-making process of the Millennial Generation. Millennials is the most recent and largest workforce of today and includes those born between 1980 and 1990. This study starts with general discussion on business ethics and its relation with age, followed by a review of ethics for entrepreneurs and the Millennials. This review revealed that although majority of Millennials consider business ethics as a vital component of business, however, all of them have not included the business ethics yet prior to start a new business in their decision making

    Collaborative professional practice for strengthening teacher educator identities in Eritrea

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    Strengthening the identities of teacher educators is critical to quality teacher education and implementing change in the education sector. This study examines the professional identities of Eritrean teacher educators and how these identities can be strengthened through collaborative professional practice in a challenging context currently under reform. The focus is on the professional capacity building activities at the College of Education in Eritrea, which were implemented in collaboration with Finnish education partners. The paper reports on findings from an action-research informed study of a semester-long series of professional development seminars and an interview study with individual teacher educators. The qualitative content analyses of seminar participants' drawings, evaluations and interview data focus on: 1) identifying critical issues that support the formation of teacher educator identities, and 2) understanding how collaborative practice at the institutional level can support the strengthening of professional identities. The findings point to potential ways of creating critical colleagueship and more purposeful, contextually relevant approaches for professional development in teacher education. The need for strengthening the identities of teacher educators' through bottom-up processes and in collaboration with international partners is highlighted.Peer reviewe

    Applicability and outcome of laparoscopic adrenalectomy for large tumours

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    Laparoscopic adrenalectomy has been shown to be as safe and effective as conventional open surgery for small and benign adrenal lesions. With increasing experience with laparoscopic adrenalectomy, this approach has become the procedure of choice for the majority of patients requiring adrenalectomy. In our department, from 2011 to 2016, a total of 28 patients with 31 adrenal tumours underwent laparoscopic adrenalectomy regardless of tumour size. Our policy in the department is to exclude adrenal tumours that are potentially malignant or metastatic adrenal tumours for laparoscopic resection. In this a retrospective study, we divided patients into two groups according to tumour size: < 5 or ≥ 5 cm, which was considered as the definition of large adrenal tumours. We compared demographic data and per- and postoperative outcomes. There was no statistical difference between the two groups for per-operative complications (16,6% vs 18,75% , P = 0.71), postoperative complications (16,6% vs 18,75% , P = 0.71), postoperative length of hospital stay (5 vs 8 days P = 0.40), mortality (0% vs 0%) or oncologic outcomes: recurrence and metastasis (8.3% vs 6.25% P = 0.70). The only statistical difference was the operating time, at a mean (SD) 194 (60) vs 237 (71) min (P = 0.039) and the conversion rate (0% vs 12.5% P < 0.01). Laparoscopic adrenalectomy can be done for all patients with adrenal tumours regardless of tumour size, even it needs more time for large tumour but appears to be safe and feasible when performed by experienced surgeons

    La collaboration dans la chaine logistique de l’industrie automobile au Maroc : Cadre théorique

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    The complexity of markets, the competitive economic environment and the development of new information and communication technologies are increasingly pushing organizations to adopt a collaborative approach to improve their performance. Industrial companies in particular have found themselves obliged to forge increasingly solid relationships in order to positively influence the conduct and proper management of the supply chain. Supply Chain Management research, especially in the industrial sector, is no longer focused on the short-term flow optimization objectives that are the prerogative of the engineering approach. It is more oriented towards the importance of adequately implementing collaborative approaches in the companies' supply chains. The automotive sector in Morocco has experienced in recent years spectacular progress, making Morocco the second-largest exporter to Europe since the first half of 2021, hence the importance of the study of collaboration in supply chains in this promising sector. This work is a study of the theoretical framework of collaboration in the supply chain, especially in the automotive industry in Morocco. The main objective is to make a synthesis of previous works dealing with collaboration in supply chains, to clarify the various concepts and to analyze already proven theoretical relationships, in a general framework, in order to try to apply them to the automotive industry sector in Morocco. This will allow us to analyze the role of collaboration in the supply chain within the Moroccan automotive sector in order to highlight the tools, skills and context that allow the creation of an efficient network in such a supply chain.     JEL Classification : L91, R41 Paper type: Theoretical ResearchLa complexité des marchés, l’environnement économique concurrentiel et le développement des nouvelles technologies en information et en communication poussent les organisations de plus en plus à adopter une approche collaborative pour améliorer leur performance. Les entreprises industrielles en particulier se sont trouvées obligées de tisser des relations de plus en plus solides afin d’agir positivement sur la conduite et la bonne gestion de la chaine logistique. La recherche en Supply Chain Management, notamment dans le secteur industriel, n’est plus centrée sur les objectifs d’optimisation des flux à court terme constituants l’apanage de l’approche ingénierie. Elle s’oriente davantage vers l’importance d’instaurer adéquatement les approches collaboratives dans les chaines logistiques des entreprises. Le secteur automobile au Maroc a connu ces dernières années un progrès spectaculaire, faisant du Maroc le deuxième exportateur vers l’Europe depuis le premier semestre de l’année 2021, d’où l’importance de l’étude de la collaboration dans les chaines logistiques dans ce secteur prometteur. Le présent travail se veut une étude du cadre théorique de la collaboration dans la chaine logistique, notamment dans l’industrie automobile au Maroc. L’objectif principal étant de faire une synthèse des travaux antérieurs traitant la collaboration dans les chaines logistiques, de clarifier les divers concepts et d’analyser des relations théoriques déjà prouvées, dans un cadre général, pour tenter de les appliquer au secteur de l’industrie automobile au Maroc. Ceci nous permettra d’analyser le rôle de la collaboration dans la chaine logistique au sein du secteur automobile marocain pour mettre en évidence les outils, les compétences et le contexte permettant la création d’un réseau efficace dans une telle chaîne logistique.     Classification JEL:  L91, R41 Type de l’article : Article théoriqu

    Unfired Clay-Cork Granules Bricks Reinforced with Natural Stabilizers: Thermomechanical Characteristics Assessment

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    Cork is an ecological, natural, and renewable additive, an excellent thermal and acoustic insulator. All these attributes encourage its use in the building sector. Adding this additive to the Earth leads to a more lightweight composite with better thermal performance than the Earth alone. Unfortunately, the mechanical performance of this composite is degraded significantly, limiting its use in construction applications. The authors propose in this study to stabilize the clay-cork composite using natural stabilizers. A chemical stabilization was tested using local quick-lime, in addition to a physical stabilization using natural sheep-wool fibers. The primary purpose is to propose eco-friendly construction material with enhanced thermal and mechanical properties and the lowest environmental impact based on local and ecological raw materials to encourage more sustainable and low-energy constructions. First, physicochemical and mineralogical characterization of used clay was investigated. Then, an experimental investigation was conducted to identify the lime content that allows the optimal stabilization for the used clay. In this context, many different specimens of Bensmim soil stabilized with lime at six many contents 0, 10, 20, 30, 40, 50, and 70% were prepared and tested. The obtained results showed that the optimal lime content for the better stabilization of the used soil is about 30%. Next, an experimental study of thermomechanical properties was conducted on unfired clay bricks mixed with expended cork granules and stabilized by the addition of variable proportions of quick-lime 0, 10 and 30% and sheep-wool fibers 0, 1, and 2%. The mechanical performance of the specimens was investigated in terms of compressive and flexural strengths. At the same time, thermal quality was qualified through evaluating thermal conductivity using the steady-state Asymmetrical Hot Plate test method. The very encouraging experimental findings showed that using lime and sheep-wool fibers at the studied addition content resulted in lightweight composites with lower thermal conductivity and higher compressive and flexural strength than reference samples. The highest thermomechanical performances are obtained with clay-cork blocks reinforced with 30% lime content and 2% sheep-wool fibers. This block recorded values of 583 kg/m3, 0.155 W/m/K, 1.55 MPa, and 3.91 MPa, for bulk density, thermal conductivity, flexural and compressive strength respectively, compared to 765 kg/m3, 0.238 W/m/K, 0.96 MPa and 2.29 MPa for control samples. New material presents lightweight material for both improved thermal and mechanical qualities encouraging its use in building applications. Doi: 10.28991/cej-2021-03091778 Full Text: PD
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