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Articles de revues sur le sujet « Migrations – Guinée »

Auteur : Grafiati
Publié le 25 janvier 2025

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1

Populin, Martha, Bode Sambo et Ludovic Andres. « « Objectif irrigation » : actions de développement, dynamiques agricoles et pratiques de la migration dans la région de Tahoua (Niger) ». Afrique contemporaine N° 277, no 1 (26 avril 2024) : 295–314. http://dx.doi.org/10.3917/afco1.277.0295.

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Depuis l’époque coloniale, les habitants de la région de Tahoua (Niger) pratiquent la migration circulaire, surtout vers la Libye et le Golfe de Guinée. Depuis les années 2000, l’essor de l’irrigation, l’arrivée de grands projets de développement et la dégradation des conditions de sécurité dans les pays de destination modifient leurs pratiques migratoires. La « migration » a été remplacée par l’« irrigation » comme principal objectif des jeunes hommes. Cependant, des interrelations existent entre ces deux pratiques, ainsi qu’avec la participation aux activités des projets de développement.
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Price, Gilbert J., Kyle J. Ferguson, Gregory E. Webb, Yue-xing Feng, Pennilyn Higgins, Ai Duc Nguyen, Jian-xin Zhao, Renaud Joannes-Boyau et Julien Louys. « Seasonal migration of marsupial megafauna in Pleistocene Sahul (Australia–New Guinea) ». Proceedings of the Royal Society B : Biological Sciences 284, no 1863 (27 septembre 2017) : 20170785. http://dx.doi.org/10.1098/rspb.2017.0785.

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Seasonal two-way migration is an ecological phenomenon observed in a wide range of large-bodied placental mammals, but is conspicuously absent in all modern marsupials. Most extant marsupials are typically smaller in body size in comparison to their migratory placental cousins, possibly limiting their potential to undertake long-distance seasonal migrations. But what about earlier, now-extinct giant marsupial megafauna? Here we present new geochemical analyses which show that the largest of the extinct marsupial herbivores, the enormous wombat-like Diprotodon optatum , undertook seasonal, two-way latitudinal migration in eastern Sahul (Pleistocene Australia–New Guinea). Our data infer that this giant marsupial had the potential to perform round-trip journeys of as much as 200 km annually, which is reminiscent of modern East African mammal migrations. These findings provide, to our knowledge, the first evidence for repetitive seasonal migration in any metatherian (including marsupials), living or extinct, and point to an ecological phenomenon absent from the continent since the Late Pleistocene.
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Nolasco, Carlos, et Nuno Oliveira. « O jogo da vida : estratégias e táticas da mobilidade migratória de futebolistas africanos para Portugal ». MOTRICIDADES : Revista da Sociedade de Pesquisa Qualitativa em Motricidade Humana 8, no 1 (7 mai 2024) : 15–28. http://dx.doi.org/10.29181/2594-6463-2024-v8-n1-p15-28.

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O jogo da vida: estratégias e táticas da mobilidade migratória de futebolistas africanos para Portugal ResumoEste texto, numa abordagem relacional, trata do tema das mobilidades migratórias no futebol, debruçando-se sobre a migração de jovens futebolistas africanos, em particular, jogadores da Guiné-Bissau para Portugal. Centra-se essencialmente nos jogadores sem visibilidade mediática, vulneráveis a estratégias e lógicas que os transcendem. Com base numa investigação qualitativa, realizada no âmbito de um projeto europeu sobre a integração de jogadores africanos na Europa, esta comunicação levanta a questão das redes de poder que se estabelecem no país de origem e no país de acolhimento, as estruturas de recrutamento destes jogadores, as motivações para migrar, e as formas de lidar com os projetos falhados devido à impossibilidade de ter sucesso no mundo altamente competitivo do futebol.Palavras-chave: Mobilidades. Migrações. Migração de Trabalho Desportivo. Futebolistas Africanos. Futebol Português. The game of life: strategies and tactics in the migration of African footballers to Portugal AbstractThis text takes a relational approach to the subject of migratory mobility in football, focusing on the migration of young African footballers, particularly players from Guinea-Bissau to Portugal. It essentially focuses on players without media visibility, who are vulnerable to strategies and logics that transcend them. Based on qualitative research carried out as part of a European project on the integration of African players in Europe, this communication raises the question of the power networks that are established in the country of origin and in the host country, the recruitment structures of these players, the motivations for migrating, and the ways of dealing with failed projects due to the impossibility of succeeding in the highly competitive world of football.Keywords: Mobilities. Migrations. Sports Labour Migration. African Footballers. Portuguese Football. El juego de la vida: estrategias y tácticas en la movilidad migratoria de futbolistas africanos a Portugal ResumenEste texto adopta un enfoque relacional del tema de la movilidad migratoria en el fútbol, centrándose en la migración de jóvenes futbolistas africanos, en particular de jugadores de Guinea-Bissau a Portugal. Se centra esencialmente en jugadores sin visibilidad mediática, vulnerables a estrategias y lógicas que los trascienden. A partir de una investigación cualitativa realizada en el marco de un proyecto europeo sobre la integración de los jugadores africanos en Europa, este trabajo plantea la cuestión de las redes de poder que se establecen en el país de origen y en el país de acogida, las estructuras de reclutamiento de estos jugadores, las motivaciones para emigrar y las formas de afrontar los proyectos fracasados debido a la imposibilidad de triunfar en el mundo altamente competitivo del fútbol.Palabras clave: Movilidades. Migraciones. Migración Laboral Deportiva. Futbolistas Africanos. Fútbol Portugués.
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Coëffier, E., D. Joseph et B. B. Vargaftig. « Activation of guinea pig eosinophils by human recombinant IL-5. Selective priming to platelet-activating factor-acether and interference of its antagonists. » Journal of Immunology 147, no 8 (15 octobre 1991) : 2595–602. http://dx.doi.org/10.4049/jimmunol.147.8.2595.

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Abstract The potential role of platelet-activating factor (PAF)-acether and of IL-5 as an eosinophil-proliferating, activating, and/or recruiting mediator in asthma led us to study the effects of human (h) rIL-5 (hrIL-5) and PAF-acether, alone or combined, on isolated guinea pig eosinophils. Two populations of eosinophils were separated from peritoneal lavages of polymyxin B-treated guinea pigs upon a discontinuous metrizamide gradient: one of low density (between 20 and 22% of metrizamide, purity: 63 +/- 3%, n = 27) and another of normal density (between 22 and 24% of metrizamide, purity: 87 +/- 2%, n = 16). Chemotactic activity was evaluated on a micro-Boyden chamber, results being expressed as the number of migrating eosinophils (mean +/- SEM) at 40 microns through a cellulose nitrate filter (3 microns pore size) in the presence of the agonist or of the solvent alone. hrIL-5 dose-dependently stimulated normodense eosinophil chemotaxis, reaching a peak at 500 ng/ml (98 +/- 21 migrating eosinophils, n = 5, p less than 0.05). These eosinophils also responded to PAF-acether and to LTB4 and not to FMLP, hrTNF alpha, and LPS. Eosinophil preincubation with hrIL-5 increased significantly the migration by PAF-acether (173 +/- 23 migrating eosinophils with PAF-acether 10 nM after preincubation with hrIL-5 500 ng/ml vs 69 +/- 10 after preincubation with buffer alone, p less than 0.01) and failed to enhance migration by LTB4 or to uncover an activity for FMLP. Migration by PAF-acether was antagonized when the cells were preincubated with the antagonists BN 52021 and WEB 2086, which also inhibited migration by hrIL-5. Eosinophils were auto-desensitized by and to PAF-acether or LTB4, but were not cross-desensitized to each other. Eosinophils desensitized to PAF-acether failed to migrate with hrIL-5, but those desensitized to LTB4 responded to hrIL-5 as controls. hrIL-5 failed to induce the elevation of intracellular free calcium concentration and superoxide anion generation from basal values, whereas preincubation of eosinophils with hrIL-5 induced a significant increase in the rise in intracellular free calcium concentration and in superoxide anion generation by 10 nM PAF-acether but not by LTB4. In conclusion, the in vivo eosinophil migration in allergy may involve hrIL-5, particularly associated to PAF-acether.
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Chavanon, Olivier, Estibaliz Jimenez, Théogène-Octave Gakuba, Sylvia Garcia Delahaye, Mohamed-Walid Benyezzar et Corina Borri-Anadon. « Expériences de franchissement de frontières et migration « irrégulière » : récits et parcours migratoires de mineurs non accompagnés en France et en Suisse ». Criminologie 57, no 2 (2024) : 217–41. https://doi.org/10.7202/1114790ar.

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Dans un contexte mondial d’augmentation des mobilités et de la migration des personnes, les mineurs non accompagnés (MNA) fuient généralement des situations précaires et souvent dangereuses, dont la violence organisée et la guerre. Les projets de départ répondent à des vécus singuliers et localement situés auxquels se mêlent des aspirations multiples (personnelles, familiales, communautaires, etc.) visant l’amélioration des conditions d’existence. Les traumatismes et formes de victimisations vécus par certains dans leur pays d’origine et lors des franchissements irréguliers des frontières peuvent s’aggraver lors de leur arrivée au pays de destination du fait des politiques d’asile restrictives. De plus, en raison de la séparation familiale, des exigences d’adaptation immédiate aux contextes d’accueil et de la vulnérabilité liée à la difficile et aléatoire reconnaissance de leur statut de mineur, les MNA sont exposés à différents risques. Dans ce contexte de précarité, de vulnérabilité et de risque d’exclusion et de victimisation, la prise en charge et la protection des MNA doivent être rapides et efficaces afin de leur offrir un environnement stable et sécuritaire et de permettre leur insertion dans la société d’accueil. À partir de récits de jeunes MNA de diverses origines (Afghanistan, Guinée, Mali, Burkina Faso, Érythrée, Somalie, Algérie, Maroc, Tunisie, etc.) arrivés en France et en Suisse, cet article s’intéresse aux expériences de l’exil, et plus particulièrement à l’expérience du franchissement des frontières dans leurs diverses dimensions (visibles et invisibles) lors des différentes phases de leur parcours migratoire.
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Tolcos, Mary, Annie McDougall, Amy Shields, Yoonyoung Chung, Rachael O’Dowd, Ann Turnley, Megan Wallace et Sandra Rees. « Intrauterine Growth Restriction Affects Cerebellar Granule Cells in the Developing Guinea Pig Brain ». Developmental Neuroscience 40, no 2 (2018) : 162–74. http://dx.doi.org/10.1159/000487797.

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Intrauterine growth restriction (IUGR) can lead to adverse neurodevelopmental sequelae in postnatal life. However, the effects of IUGR on the cerebellum are still to be fully elucidated. A major determinant of growth and development of the cerebellum is proliferation and subsequent migration of cerebellar granule cells. Our objective was to determine whether IUGR, induced by chronic placental insufficiency (CPI) in guinea pigs, results in abnormal cerebellar development due to deficits suggestive of impaired granule cell proliferation and/or migration. CPI was induced by unilateral ligation of the uterine artery at mid-gestation, producing growth-restricted (GR) foetuses at 52 and 60 days of gestation (dg), and neonates at 1 week postnatal age (term approx. 67 dg). Controls were from sham-operated animals. In GR foetuses compared with controls at 52 dg, the external granular layer (EGL) width and internal granular layer (IGL) area were similar. In GR foetuses compared with controls at 60 dg: (a) the EGL width was greater (p < 0.005); (b) the IGL area was smaller (p < 0.005); (c) the density of Ki67-negative (postmitotic) granule cells in the EGL was greater (p < 0.01); (d) the somal area of Purkinje cells was reduced (p < 0.005), and (e) the linear density of Bergmann glia was similar. The EGL width in GR foetuses at 60 dg was comparable to that of 52 dg control and GR foetuses. The pattern of p27-immunoreactivity in the EGL was the inverse of Ki67-immunoreactivity at both foetal ages; there was no difference between control and GR foetuses at either age in the width of p27-immunoreactivity, or in the percentage of the EGL width that it occupied. In the molecular layer of GR neonates compared with controls there was an increase in the areal density of granule cells (p < 0.05) and in the percentage of migrating to total number of granule cells (p < 0.01) at 1 week but not at 60 dg (p > 0.05). Thus, we found no specific evidence that IUGR affects granule cell proliferation, but it alters the normal program of migration to the IGL and, in addition, the development of Purkinje cells. Such alterations will likely affect the development of appropriate circuitry and have implications for cerebellar function.
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Carrier, James G., Andrew J. Strathern et Gabriele Stuerzen-Hofecker. « Migration and Transformations : Regional Perspectives on New Guinea ». Journal of the Royal Anthropological Institute 2, no 1 (mars 1996) : 198. http://dx.doi.org/10.2307/3034682.

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Minnegal, Monica, Andrew J. Strathern et Gabriele Sturzenhofecker. « Migration and Transformations : Regional Perspectives on New Guinea. » Pacific Affairs 69, no 4 (1996) : 604. http://dx.doi.org/10.2307/2761217.

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Biersack, Aletta. « Migration and Transformations : Regional Perspectives on New Guinea ». American Ethnologist 24, no 1 (février 1997) : 265–68. http://dx.doi.org/10.1525/ae.1997.24.1.265.

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Mejia Noe, Alex Fernando, et Jon Arambarri. « Guía metodológica para la implementación de televisión digital en Bolivia ». Project, Design and Management 1, no 2 (18 novembre 2019) : 89–110. http://dx.doi.org/10.35992/pdm.v1i2.343.

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The migration to Digital Terrestrial Television or Open Digital Television, with the ISDB-Tb standard, is a transition that involves several changes and heavy investments in the transmission and development of content by television companies and also meansa change for users, since they must also adapt their televisions to have access to the new signal with more audio and video quality. It is necesary to study the regulations, to point out the essential requirements for the different phases of implementation, in joint work with companies and specialized professionals, with international recognized good practices in project management. In Bolivia, Telecommunications Law 164 was amended on August 31, 2017 to provide a conglomerate of resolutions and decrees that promote the digital migration of the different analogue television channels and subsequently a series of provisions were established for operating licensing for 15 more years for each current operator, for free. The channels companies have a new digitalblackout period for the 3 main cities until November 2021 and others with less coverage until November 2025. The guide resulting from this work has already been applied and its contribution to all other channels is expected.
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Cinner, J. E. « Migration and coastal resource use in Papua New Guinea ». Ocean & ; Coastal Management 52, no 8 (août 2009) : 411–16. http://dx.doi.org/10.1016/j.ocecoaman.2009.06.003.

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Sugiyama, Yukimaru. « Socioecological factors of male chimpanzee migration at Bossou, Guinea ». Primates 40, no 1 (janvier 1999) : 61–68. http://dx.doi.org/10.1007/bf02557702.

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MacFarlane, JW, et R. Moore. « Reproduction of the ornate rock lobster, Panulirus ornatus (Fabricius), in Papua New Guinea ». Marine and Freshwater Research 37, no 1 (1986) : 55. http://dx.doi.org/10.1071/mf9860055.

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Based on the examination of 26 499 female and 17 666 male specimens, the reproductive biology of P. ornatus is discussed with spatiotemporal reference to the annual breeding migration from northern Torres Strait to the Gulf of Papua. Migration commences generally in August with ovary development, mating and initial oviposition occurring during migration. Larval release normally commences once the migration has terminated on the reefs of the eastern seaboard in the Gulf of Papua. At the conclusion of the migration, marked segregation of the sexes occurs, with males entering shallow water (< 3 m) before females, who frequent deeper water (3-15 m) until their eggs have hatched. During the breeding season (November- April), females produce up to three broods. Fecundity is determined for 33 females in the carapace size range 75.4-121.0 mm. No significant egg loss during incubation was detected, but there was an indication of a reduction in the size of each subsequent brood. There appears to be a high post-spawning mortality of migratory lobsters. It is likely that the Gulf of Papua is the major source of larval recruitment in the western Coral Sea, including the east coast of Queensland and Torres Strait.
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Thomas, Kehinde Adesina, Lukman Abiodun Oyebode et Siaka Toure. « Effects of Migration on Farm Labour among Rice Farmers in Mamou Prefecture, Guinea Conakry ». Afrika Focus 37, no 2 (20 décembre 2024) : 315–31. https://doi.org/10.1163/2031356x-20240206.

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Abstract One of the critical assets directed at agricultural production is labour. In this context, the effects of migration on farm labour among rice farmers in Mamou Prefecture, Guinea Conakry, were assessed. To achieve this goal, 140 respondents were sampled using a multi-stage sampling procedure. Both descriptive and inferential statistics were used to analyse the data to present results and test for correlation between ranked variables. Prominent among the push factors responsible for farm labour migration were poverty ( , sd = 0.83), poor healthcare services ( , sd = 0.74) and unemployment sd = 0.61),) while good government policies ( , sd = 0.75) and food security ( , sd = 0.63) were the pull factors. The highest-ranked migration types with effects on farm labour migration were short term ( , sd = 0.45), internal ( , sd = 0.78) and individual ( , sd = 1.45) migration. Farm labour was unavailable (77.1%) in the study area on a cumulative scale. There was an inverse relationship between unemployment (rho = −0.019, p = 0.024), method of land preparation (rho = −0.219, p = 0.009), marital status (rho = −0.178, p = 0.036), family/friends (rho = −0.184, p = 0.030) and farm labour availability, whereas the relationship was direct for the availability of raw materials for production (rho = 0.240, p = 0.004) and farm labour availability. The enacting and sustaining of enabling government policies to improve the livelihoods and the intensifying of agricultural mechanisation are recommended in order to stem migration and sustain farm labour availability.
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Olsson, Ing-Marie C., Murray W. Lankester, Alvin A. Gajadhar et Margareta Steen. « Tissue Migration of Elaphostrongylus spp. in Guinea Pigs (Cavia porcellus) ». Journal of Parasitology 84, no 5 (octobre 1998) : 968. http://dx.doi.org/10.2307/3284629.

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Alexander, N. D. E., M. J. Bockarie, Z. B. Dimber, L. Griffin, J. W. Kazura et M. P. Alpers. « Migration and dispersal of lymphatic filariasis in Papua New Guinea ». Transactions of the Royal Society of Tropical Medicine and Hygiene 95, no 3 (mai 2001) : 277–79. http://dx.doi.org/10.1016/s0035-9203(01)90233-0.

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Ban, M., D. Hettich, M. Goutet et P. Bonnet. « TDI inhalation in guinea-pigs involves migration of dendritic cells ». Toxicology Letters 93, no 2-3 (décembre 1997) : 185–94. http://dx.doi.org/10.1016/s0378-4274(97)00091-x.

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Imamura, Takahisa, Tetsuro Yamamoto, Kikuo Kozono et Takeshi Kambara. « Failure of guinea pig plasma kallikrein to cause neutrophil migration ». Inflammation 10, no 4 (décembre 1986) : 333–45. http://dx.doi.org/10.1007/bf00915818.

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Crosbie Walsh, A. « On the move : Migration, Urbanization and development in Papua New Guinea ». Asia-Pacific Population Journal 2, no 1 (5 février 1987) : 21–40. http://dx.doi.org/10.18356/06aa9873-en.

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Samejima, Yasuhiro, Keisuke Masuyama et Takeru Ishikawa. « Transepithelial Migration of Eosinophils in Experimental Nasal Allergy in Guinea Pigs ». Auris Nasus Larynx 15, no 1 (1988) : 33–42. http://dx.doi.org/10.1016/s0385-8146(88)80007-5.

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Munoz, N. M., et A. R. Leff. « Blockade of eosinophil migration by 5-lipoxygenase and cyclooxygenase inhibition in explanted guinea pig trachealis ». American Journal of Physiology-Lung Cellular and Molecular Physiology 268, no 3 (1 mars 1995) : L446—L454. http://dx.doi.org/10.1152/ajplung.1995.268.3.l446.

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We studied the effects of 5-lipoxygenase inhibition with A63162 and cyclooxygenase inhibition with indomethacin (INDO) on 1) eosinophil chemotaxis and 2) airway narrowing caused by 10(-6) M formyl-Met-Leu-Phe (fMLP) in tracheal explants from guinea pigs. Airway narrowing was assessed by calibrated micrometry, and eosinophil migration from the lamina propria was expressed as number of eosinophils contained per 1 cm tracheal segment. After 120 min, treatment with fMLP caused an increase in luminal eosinophils from 6,804 +/- 1,786 to 303,347 +/- 75,609 cells (P < 0.001); airway diameter narrowed by 20.4 +/- 1.4%. In six preparations, A63162 inhibited airway narrowing caused by fMLP by 54.9 +/- 6.1%; INDO had a similar effect on airway diameter. However, maximal inhibition of eosinophil migration was greater after 10(-6) M A63162 (38,393 +/- 7,434 cells; P < 0.001 vs. fMLP alone) than after treatment with 10(-5) M INDO (123,547 +/- 19,499 cells; P < 0.05). We demonstrate a method that permits simultaneous measurements of eosinophil migration and airway smooth muscle contraction in a guinea pig tracheal explant preparation. Our data suggest that eosinophil chemotaxis and changes in internal airway diameter are caused by activation of both 5-lipoxygenase and cyclooxygenase pathways and that cell migration is independent of the physical consequences of airway smooth muscle contraction.
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Montagu, Jeremy, et Mervyn McLean. « Diffusion of Musical Instruments and Their Relation to Language Migrations in New Guinea ». Galpin Society Journal 50 (mars 1997) : 252. http://dx.doi.org/10.2307/842583.

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Esbjörnsson, Joakim, Mattias Mild, Fredrik Månsson, Hans Norrgren et Patrik Medstrand. « HIV-1 Molecular Epidemiology in Guinea-Bissau, West Africa : Origin, Demography and Migrations ». PLoS ONE 6, no 2 (18 février 2011) : e17025. http://dx.doi.org/10.1371/journal.pone.0017025.

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Kim, J. S., K. F. Rabe, H. Magnussen, J. M. Green et S. R. White. « Migration and proliferation of guinea pig and human airway epithelial cells in response to tachykinins ». American Journal of Physiology-Lung Cellular and Molecular Physiology 269, no 1 (1 juillet 1995) : L119—L126. http://dx.doi.org/10.1152/ajplung.1995.269.1.l119.

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Restoration of the epithelial lining of a damaged airway is a necessary component of airway repair. Tachykinins, including substance P (SP) and neurokinin A (NKA), are localized to sensory nerves within the airway mucosa. These tachykinins regulate several airway functions, but their role in the repair of the epithelium has not been explored. To determine whether tachykinins stimulate migration and proliferation of airway epithelial cells, guinea pig tracheal epithelial (GPTE) and human bronchial epithelial (HBE) cells were grown in primary culture for 4-5 days. Epithelial cell migration was assessed in a blindwell chemotaxis chamber, and proliferation was determined by immunohistochemistry after incorporation of the thymidine analogue 5-bromo-2'-deoxyuridine (BrdU). Both GPTE and HBE cells migrated after stimulation with 10(-11) M NKA [23.0 +/- 3.6 vs. 5.4 +/- 1.2 cells per 10 high-power fields (hpf), P < 0.001, n = 8 for GPTE cells; 18.4 +/- 2.3 vs. 3.8 +/- 0.5 cells per 10 hpf for control, P < 0.001, n = 4 for HBE cells]. Migration was stimulated within 2 h, was maximal after 6 h, and was attenuated substantially by the neurokinin 2 (NKA)-receptor antagonist SR-48968. NKA-stimulated migration was both chemokinetic and chemotactic, and it could be blocked by inhibition of protein synthesis with cyclohexamide, inhibition of microtubular function with colchicine, or inhibition of actin microfilament elongation with cytochalasin D.(ABSTRACT TRUNCATED AT 250 WORDS)
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Bjorling, D. E., M. R. Saban et R. Saban. « Neurogenic Inflammation of Guinea-Pig Bladder ». Mediators of Inflammation 3, no 3 (1994) : 189–97. http://dx.doi.org/10.1155/s0962935194000268.

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Capsaicin, substance P, and ovalbumin, instilled into the bladders of naive and ovalbumin (OVA) sensitized guineapigs caused inflammation, as indicated by increased vascular permeability. Histological changes after exposure to these compounds progressed with time from intense vasodilatation to marginalization of granulocytes followed by interstitial migration of leukocytes.In vitroincubation of guinea-pig bladder tissue with substance P and ovalbumin stimulated release of prostaglandin D2and leukotrienes.In vitroincubation of bladder tissue with capsaicin, OVA, prostaglandin D2, leukotriene C4, histamine, or calcium ionophore A-23587 all stimulated substance P release. These data suggest that bladder inflammation initiated by a variety of stimuli could lead to a cyclic pattern of release of inflammatory mediators and neuropeptides, which could result in amplification and persistence of cystitis after the inciting cause has subsided.
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Brzezińska, Magdalena. « Transcontinental polygyny, migration and hegemonic masculinity in Guinea‐Bissau and the Gambia ». Australian Journal of Anthropology 32, no 3 (30 novembre 2021) : 257–71. http://dx.doi.org/10.1111/taja.12417.

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Umezaki, Masahiro, et Ryutaro Ohtsuka. « Changing Migration Patterns of the Huli in the Papua New Guinea Highlands ». Mountain Research and Development 22, no 3 (août 2002) : 256–62. http://dx.doi.org/10.1659/0276-4741(2002)022[0256:cmpoth]2.0.co;2.

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Moore, Ronda, Joseph Madri, Susan Carlson et James L. Madara. « Collagens facilitate epithelial migration in restitution of native guinea pig intestinal epithelium ». Gastroenterology 102, no 1 (janvier 1992) : 119–30. http://dx.doi.org/10.1016/0016-5085(92)91791-2.

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Kim, J. S., V. S. McKinnis et S. R. White. « Migration of guinea pig airway epithelial cells in response to bombesin analogues. » American Journal of Respiratory Cell and Molecular Biology 16, no 3 (mars 1997) : 259–66. http://dx.doi.org/10.1165/ajrcmb.16.3.9070610.

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Inglis, Christine. « The Chinese of Papua New Guinea : From Settlers to Sojourners ». Asian and Pacific Migration Journal 6, no 3-4 (septembre 1997) : 317–41. http://dx.doi.org/10.1177/011719689700600304.

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The renewed interest in diaspora populations in this age of globalization has inevitably led to a re-examination of the Chinese diaspora which, especially in Southeast Asia, has achieved prominence through its association with the ëAsian economic miracle.í This article examines the contemporary transformation of the Papua New Guinea part of this Chinese diaspora from a long settled, homogeneous community into a highly segmented and fragmented sojourner population. Integral to this process has been the intersection of post-colonial nationalism with the emergence of new opportunities for economic development attracting Asian and other international investors. The new sojourner Chinese population differs in significant respects from the sojourner populations associated with much nineteenth and early twentieth century Chinese migration. A particular feature which emerges from the exploration of the variant patterns of Chinese migration and settlement in Papua New Guinea is the need to re-examine the nature of ìChineseî identity and frequent assumptions about the characteristics of Chinese diaspora populations. The Papua New Guinea Chinese case highlights the diversity in the way the Chinese identities related to the concept of a ëhomelandí as well as the very different ways in which segments of the same diaspora group relate to each other and to Chinese elsewhere.
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Ineke Phaf-Rheinberger. « Migration versus Stagnation in Equatorial Guinea : The Sea as the Promise of Modernity ». Research in African Literatures 48, no 3 (2017) : 55. http://dx.doi.org/10.2979/reseafrilite.48.3.07.

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Dundon, Alison. « The Sense of Sago : Motherhood and Migration in Papua New Guinea and Australia ». Journal of Intercultural Studies 26, no 1-2 (février 2005) : 21–37. http://dx.doi.org/10.1080/07256860500073997.

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VILIC, I., L. PROKIC et I. SPUZIC. « Modulation of guinea pig peritoneal macrophage migration in vitro : effects of protease inhibitors ». Immunology Letters 14, no 4 (avril 1987) : 271–76. http://dx.doi.org/10.1016/0165-2478(87)90003-4.

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Prokić, Ljubica M., et Ivanka M. Vilić. « Impaired Random Migration and Special Reactivity to Methylprednisolone in Young Guinea Pig Macrophages ». Neonatology 58, no 3 (1990) : 166–72. http://dx.doi.org/10.1159/000243257.

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Guichon, Nicolas. « Présentation de soi sur une application de rencontre - le cas des hommes gays en mobilité étudiante ». SHS Web of Conferences 130 (2021) : 03001. http://dx.doi.org/10.1051/shsconf/202113003001.

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Située dans le champ de recherche des études sur le numérique et la migration, cette étude explore de quelles façons les étudiants étrangers gays se présentent sur une application de rencontre (Grindr) et se forgent une identité intermédiaire entre leur pays d’origine et leur pays d’accueil. L’étude combine une analyse de l’interface de présentation de soi sur Grindr et celle d’entretiens semi-guidés menés auprès d’un échantillon d’étudiants afin de déterminer comment ces individus déclarent qu’ils utilisent les affordances de l’application de rencontre pour projeter et entretenir une présentation de soi en ligne, interagir avec d’autres individus en déployant une gamme d’ajustements identitaires et sémiotiques et se confronter aux regards des autres. Les entextualisations (Jones, 2018) mobilisant des ressources textuelles et visuelles pour construire et entretenir son profil sont examinées afin de mettre au jour quelques-unes des stratégies d’exposition discursive des étudiants et les tensions identitaires que cela peut générer. D’une part, la visualité des applications de rencontres semble inciter les individus gays à se conformer à des normes valorisant la blanchité et la virilité. D’autre part, ces applications contribuent à la socialisation des étudiants étrangers mais les confronte à la dureté des rapports sociaux et à certains comportements de racisation.
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BLACK, R., et M. SESSAY. « FORCED MIGRATION, LAND-USE CHANGE AND POLITICAL ECONOMY IN THE FOREST REGION OF GUINEA ». African Affairs 96, no 385 (1 octobre 1997) : 587–605. http://dx.doi.org/10.1093/oxfordjournals.afraf.a007885.

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Kamiya, Haruo, et Diane J. McLaren. « Schistosoma mansoni : Migration potential of normal and radiation attenuated parasites in naive guinea pigs ». Experimental Parasitology 63, no 1 (février 1987) : 98–107. http://dx.doi.org/10.1016/0014-4894(87)90082-8.

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Azzarelli, Biagio, Jans Muller, L. David Mirkin et Michael P. Goheen. « Transvascular migration of L2C leukemic cells studied in the liver of the guinea pig ». Virchows Archiv A Pathological Anatomy and Histopathology 406, no 4 (1985) : 425–40. http://dx.doi.org/10.1007/bf00710234.

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Doi, Takeshi, Tomoki Tozuka et Toshio Yamagata. « The Atlantic Meridional Mode and Its Coupled Variability with the Guinea Dome ». Journal of Climate 23, no 2 (15 janvier 2010) : 455–75. http://dx.doi.org/10.1175/2009jcli3198.1.

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Abstract Using an ocean–atmosphere coupled general circulation model, air–sea interaction processes associated with the Atlantic meridional mode are investigated from a new viewpoint of its link with the Guinea Dome in the northern tropical Atlantic. The subsurface thermal oceanic dome develops off Dakar from late spring to late fall owing to wind-induced Ekman upwelling. Its seasonal evolution is due to surface wind variations associated with the northward migration of the intertropical convergence zone (ITCZ). Since the upwelling cools the mixed layer in the Guinea Dome region during summer, it is very important to reproduce its variability in order to simulate the sea surface temperature (SST) there. During the preconditioning phase of the positive (negative) Atlantic meridional mode, the dome is anomalously weak (strong) and the mixed layer is anomalously deep (shallow) there in late fall. This condition reduces (enhances) the sensitivity of the mixed layer temperature to the climatological atmospheric cooling. As a result, the positive (negative) SST anomaly appears there in early winter. Then, it develops in the following spring through the wind–evaporation–SST (WES) positive feedback associated with the anomalous northward (southward) migration of the ITCZ. This, in turn, leads to the stronger (weaker) Ekman upwelling and colder (warmer) subsurface temperature in the dome region during summer. It plays an important role on the decay of the warm (cold) SST anomaly through entrainment as a negative feedback. Therefore, simulating this interesting air–sea interaction in the Guinea Dome region is critical in improving prediction skill for the Atlantic meridional mode.
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40

Turtio, Riina. « Soviet Military Assistance to Mali and Guinea, 1958–1980 ». Journal of West African History 10, no 1 (2024) : 111–42. http://dx.doi.org/10.14321/jwestafrihist.10.1.0111.

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Abstract What impact did the Cold War have on building the national armies in Africa? Previous research has focused on Cold War conflict zones, but foreign military assistance had a profound impact on the armies and political systems in countries that did not experience a prolonged conflict. This article focuses on the impact of Cold War competition in Guinea and Mali. The USSR was the main weapons supplier to both countries during the Cold War, which gave it considerable political influence. Based on archival research, memoirs, and online databases, this article shows a similarity in the army's pervasive role in society, arrests and executions of key soldiers and officials, harsh economic conditions, and mass migration to neighboring countries. Similar are also the silences around Malian and Guinean military history. There is, however, a clear need for further study on the political, economic, and military impact of Soviet military assistance.
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Coéffier, Eliane, Danielle Joseph et B. Boris Vargaftig. « Role of interleukin-5 in enhanced migration of eosinophils from airways of immunized guinea-pigs ». British Journal of Pharmacology 113, no 3 (novembre 1994) : 749–56. http://dx.doi.org/10.1111/j.1476-5381.1994.tb17057.x.

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Leven, RM, PK Schick et AZ Budzynski. « Fibrinogen biosynthesis in isolated guinea pig megakaryocytes ». Blood 65, no 2 (1 février 1985) : 501–4. http://dx.doi.org/10.1182/blood.v65.2.501.501.

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Abstract Fibrinogen synthesis was investigated in guinea pig megakaryocytes. Purified megakaryocytes were incubated with 35S-methionine in methionine-free incubation medium for 18 hours. Newly synthesized fibrinogen in megakaryocyte lysates enriched with purified carrier guinea pig fibrinogen was immunoprecipitated with a specific anti- guinea pig fibrinogen antiserum produced in rabbits. Proteins in the immunoprecipitates were analyzed with a 3.5% to 10.0% gradient polyacrylamide slab gel electrophoresis and auto-radiography. Radioactivity was detected in a protein band of 340,000 daltons. In order to verify fibrinogen synthesis, immunoprecipitate was analyzed by two-dimensional slab gel electrophoresis: (1) the first dimension separated unreduced fibrinogen using a 3.5% to 10.0% gradient gel; (2) following reduction by 2-beta-mercaptoethanol, fibrinogen chains were separated in the second dimension using a 10% gel. Alpha, beta, and gamma fibrinogen chains, which represented carrier guinea pig plasma fibrinogen, were visualized by Coomassie brilliant blue. Autoradiography identified the incorporation of radioactivity into the three fibrinogen chains. In control experiments, immunoprecipitates, produced by exposing megakaryocyte lysates to preimmune rabbit serum and goat anti-rabbit IgG, were also analyzed by the two-dimensional gel system. Radioactivity was not detected in sites corresponding to the migration of fibrinogen subunits. The study demonstrates that isolated guinea pig megakaryocytes can synthesize fibrinogen. The electrophoretic mobility of newly synthesized fibrinogen and subunits is similar to that of guinea pig plasma fibrinogen.
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Leven, RM, PK Schick et AZ Budzynski. « Fibrinogen biosynthesis in isolated guinea pig megakaryocytes ». Blood 65, no 2 (1 février 1985) : 501–4. http://dx.doi.org/10.1182/blood.v65.2.501.bloodjournal652501.

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Fibrinogen synthesis was investigated in guinea pig megakaryocytes. Purified megakaryocytes were incubated with 35S-methionine in methionine-free incubation medium for 18 hours. Newly synthesized fibrinogen in megakaryocyte lysates enriched with purified carrier guinea pig fibrinogen was immunoprecipitated with a specific anti- guinea pig fibrinogen antiserum produced in rabbits. Proteins in the immunoprecipitates were analyzed with a 3.5% to 10.0% gradient polyacrylamide slab gel electrophoresis and auto-radiography. Radioactivity was detected in a protein band of 340,000 daltons. In order to verify fibrinogen synthesis, immunoprecipitate was analyzed by two-dimensional slab gel electrophoresis: (1) the first dimension separated unreduced fibrinogen using a 3.5% to 10.0% gradient gel; (2) following reduction by 2-beta-mercaptoethanol, fibrinogen chains were separated in the second dimension using a 10% gel. Alpha, beta, and gamma fibrinogen chains, which represented carrier guinea pig plasma fibrinogen, were visualized by Coomassie brilliant blue. Autoradiography identified the incorporation of radioactivity into the three fibrinogen chains. In control experiments, immunoprecipitates, produced by exposing megakaryocyte lysates to preimmune rabbit serum and goat anti-rabbit IgG, were also analyzed by the two-dimensional gel system. Radioactivity was not detected in sites corresponding to the migration of fibrinogen subunits. The study demonstrates that isolated guinea pig megakaryocytes can synthesize fibrinogen. The electrophoretic mobility of newly synthesized fibrinogen and subunits is similar to that of guinea pig plasma fibrinogen.
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Halse, SA, GB Pearson, RP Jaensch, P. Kulmoi, P. Gregory, WR Kay et AW Storey. « Waterbird surveys of the Middle Fly River floodplain, Pap New Guinea ». Wildlife Research 23, no 5 (1996) : 557. http://dx.doi.org/10.1071/wr9960557.

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In total, 58 species of waterbird were recorded on the grassed floodplain of the Middle Fly during surveys in December 1994 and April 1995. The floodplain is an important dry-season habitat both in New Guinea and internationally, with an estimated (+/- s.e.) 587249 +/- 62741 waterbirds in December. Numbers decreased 10-fold between December and April to 54914 +/- 9790: the area was less important during the wet season when it was more deeply inundated. Only magpie geese, comb-crested jacanas and spotted whistling-ducks were recorded breeding on the floodplain. The waterbird community was numerically dominated by fish-eating species, especially in December. Substantial proportions of the populations of many species that occurred on the Middle Fly in December were probably dry-season migrants from Australia, suggesting that migration across Torres Strait is important to the maintenance of waterbird numbers in both New Guinea and Australia.
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SHIMODA, Hiroshi, Rui-Cheng JI et Seiji KATO. « Afferent Migration of the Kurloff Cells via Lymphatics into the Thymus of Estradiol-Treated Guinea Pigs. » Archives of Histology and Cytology 60, no 1 (1997) : 101–12. http://dx.doi.org/10.1679/aohc.60.101.

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Curry, George, et Gina Koczberski. « Migration and circulation as a way of life for the Wosera Abelam of Papua New Guinea ». Asia Pacific Viewpoint 39, no 1 (avril 1998) : 29–52. http://dx.doi.org/10.1111/1467-8373.00052.

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Sanghavi, J. N., K. F. Rabe, J. S. Kim, H. Magnussen, A. R. Leff et S. R. White. « Migration of human and guinea pig airway epithelial cells in response to calcitonin gene-related peptide. » American Journal of Respiratory Cell and Molecular Biology 11, no 2 (août 1994) : 181–87. http://dx.doi.org/10.1165/ajrcmb.11.2.8049078.

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Foster, Aidan, et Chi Chung Chan. « Peptide Leukotriene Involvement in Pulmonary Eosinophil Migration upon Antigen Challenge in the Actively Sensitized Guinea Pig ». International Archives of Allergy and Immunology 96, no 3 (1991) : 279–84. http://dx.doi.org/10.1159/000235508.

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Ling, Wang, Bai Wenyuan, Ma Yongzhi et Gu Yong. « Gastrointestinal migrating motor complex during early stage of cholesterol gallstone formation in guinea pigs ». Journal of Medical Colleges of PLA 23, no 1 (février 2008) : 9–14. http://dx.doi.org/10.1016/s1000-1948(08)60002-7.

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Martin, B. A., et SJ Cawley. « ONSHORE AND OFFSHORE PETROLEUM SEEPAGE : CONTRASTING A CONVENTIONAL STUDY IN PAPUA NEW GUINEA AND AIRBORNE LASER FLUOROSENSING OVER THE ARAFURA SEA ». APPEA Journal 31, no 1 (1991) : 333. http://dx.doi.org/10.1071/aj90026.

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Two case studies from the northern margin of the Australian continental plate are presented to illustrate mapping and understanding seepage in an onshore and an offshore area. The first involves an integrated approach to the detection and analysis of onshore seeps in the Aure Thrust Belt of Papua New Guinea. The second study is an application of BP's proprietary Airborne Laser Fluorosensor (ALF) technology to the systematic detection and mapping of offshore oil seepage in the Arafura Sea, northern Australia.In the absence of well or outcrop source rock data, the source risking in the Aure Thrust Belt has been constrained using oil and gas seeps. Mapping the seeps required optimum use of the local peoples' observational prowess. Geochemical analyses of the seeps allowed the identification of an oil-prone source rock of probable Jurassic age. The data reveal that the seeping petroleum liquids are gas condensates in the subsurface, and provide information on the maturation history of the source and the nature of the reservoir/carrier beds, as well as differentiating the biogenic and thermogenic gas components. In this uplifted region, seepage is likely to be from accumulations only.To help reduce the exploration risk in offshore areas such as the Arafura Sea, BP have developed the ALF system which detects oil seepage at the sea surface. It does this by detecting its characteristic fluorescence, which is induced by an aircraft-mounted ultraviolet excimer laser.The ALF data over the western Arafura Sea indicate active oil seepage showing a distribution which is compatible with our current understanding of the subsurface Palaeozoic and Mesozoic source kitchens. The mapped seepage over the Goulburn Graben is most likely derived from the Palaeozoic to (?)Triassic section (with a possible contribution from other Mesozoic sources), and must be migrating through a largely unfaulted Mesozoic seal. Additionally, there is evidence for liquid petroleum seepage from the Mesozoic section in the Calder Graben via faults which cut through the regional seal along the Lynedoch Bank Fault System. In this region of the Arafura Sea, seepage is likely to derive from accumulations, mature source kitchens and secondary migration routes.
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