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Artículos de revistas sobre el tema "African Highlands Initiative"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 28 de julio de 2025

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1

Oloo, Josephat Okuku, and Paul Omondi. "Strengthening local institutions as avenues for climate change resilience." International Journal of Disaster Resilience in the Built Environment 8, no. 5 (2017): 573–88. http://dx.doi.org/10.1108/ijdrbe-12-2013-0047.

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Purpose In Africa, poverty and food insecurity is pervasive due to intertwined factors including, declining crop yields, land degradation and inadequate policy and institutional support. With ever-increasing populations, climate change effects will be intensified, and a major crisis is inevitable unless measures to sustain land resources are urgently taken. This paper aims to argue that vibrant rural institutions are necessary to ensure food security and environmental protection, consequently contributing to climate change resilience. Design/methodology/approach The paper demonstrates the role
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2

KUROSAKI, Ryugo, Teppei OKAMURA, and Juichi ITANI. "Current Status of Pico Hydro Power Systems based on the Spontaneous Initiatives in the Southern Highlands of Tanzania." Journal of African Studies 2014, no. 85 (2014): 13–21. http://dx.doi.org/10.11619/africa.2014.85_13.

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3

Mekonnen, Ademe, Chris D. Thorncroft, and Anantha R. Aiyyer. "Analysis of Convection and Its Association with African Easterly Waves." Journal of Climate 19, no. 20 (2006): 5405–21. http://dx.doi.org/10.1175/jcli3920.1.

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Abstract The association between convection and African easterly wave (AEW) activity over tropical Africa and the tropical Atlantic during the boreal summer is examined using satellite brightness temperature (TB) and ECMWF reanalysis datasets. Spectral analysis using 18 yr of TB data shows significant variance in the 2–6-day range across most of the region. Within the regions of deep convection, this time scale accounts for about 25%–35% of the total variance. The 2–6-day convective variance has similar amplitudes over western and eastern Africa, while dynamic measures of AEW activity show str
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4

Mekonnen, Ademe, and William B. Rossow. "The Interaction between Deep Convection and Easterly Wave Activity over Africa: Convective Transitions and Mechanisms." Monthly Weather Review 146, no. 6 (2018): 1945–61. http://dx.doi.org/10.1175/mwr-d-17-0217.1.

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Recent work using observational data from the International Satellite Cloud Climatology Project (ISCCP) and reanalysis products suggests that African easterly waves (AEWs) form in association with a “transition” process from smaller and scattered convection into larger and organized mesoscale convective activity. However, the transition process is unclear and how mesoscale convection initiates AEWs is not well understood. Analysis based on 25 years of ISCCP and reanalysis datasets show that increasing intradiurnal activity, atmospheric instability, and specific humidity precede the development
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5

Schmidt, Peter R., and Matthew C. Curtis. "Urban precursors in the Horn: early 1st-millennium BC communities in Eritrea." Antiquity 75, no. 290 (2001): 849–59. http://dx.doi.org/10.1017/s0003598x00089420.

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Eritrea fought a war of liberation for three decades between the early 1960s and 1991. While professional research stagnated because of the war, amateur archaeologists provided the sole source of information for ancient material culture in the country during this era. With the coming of independence in 1993, awareness of the potential value of Eritrea’s heritage resources began to grow, leading to an initiative in 1997 to teach archaeology and heritage management at the University of Asmara.Out of the combined training and research programmes conducted by the University of Asmara have come sev
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6

Muthoni, Jane, and Hussein Shimelis. "Heat and drought stress and their implications on potato production under dry African tropics." SEPTEMBER 2020, no. 14(9):2020 (September 20, 2020): 1405–14. http://dx.doi.org/10.21475/ajcs.20.14.09.p2402.

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The two most important abiotic factors affecting potato productivity in many areas of the world and especially in the dry African tropics are drought and high temperature. The situation is worsened by global warming. High temperature and drought reduce not only yields but also quality of potatoes. The effects of drought depend on the genotype, timing, duration and severity of the stress; plant emergence and tuberization are two critical periods when water stress most affects the final tuber yield. The susceptibility of potato crops to high temperature largely depends on genotype, development s
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7

Blackie, J. R., and M. Robinson. "Development of catchment research, with particular attention to Plynlimon and its forerunner, the East African catchments." Hydrology and Earth System Sciences 11, no. 1 (2007): 26–43. http://dx.doi.org/10.5194/hess-11-26-2007.

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Abstract. Dr J.S.G. McCulloch was deeply involved in the establishment of research catchments in East Africa and subsequently in the UK to investigate the hydrological consequences of changes in land use. Comparison of these studies provides an insight into how influential his inputs and direction have been in the progressive development of the philosophy, the instrumentation and the analytical techniques now employed in catchment research. There were great contrasts in the environments: tropical highland (high radiation, intense rainfall) vs. temperate maritime (low radiation and frontal stor
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8

Agbor Emoh Wilsilia Agbor and Titus Fondo Ambebe. "Interactive effects of branch type and growth medium on early growth and survival of cutting-propagated Cordia africana (Lam.)." International Journal of Frontiers in Life Science Research 4, no. 1 (2023): 001–7. http://dx.doi.org/10.53294/ijflsr.2023.4.1.0068.

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Cordia africana Lam is an economically and ecologically valuable tree of the Western Highlands forest of Cameroon that is under pressure of over-exploitation and habitat fragmentation. There is a need for fast and easy means of mass production of quality planting stock for upregulation of the population of the species. An experiment was carried out to investigate the combined effects of branch type and growth medium on early growth and survival of C. africana cuttings. Treatments were comprised of three branch types (primary, secondary, tertiary) of cuttings origin and three growth media (sand
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9

Muedi, T., S. MacLennan, D. Szymanowski, et al. "Constraining the timescales of mafic magmatism of the Central Karoo Large Igneous Province using high precision U-Pb zircon geochronology." South African Journal of Geology 125, no. 1 (2022): 99–112. http://dx.doi.org/10.25131/sajg.125.0009.

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Abstract Recent U-Pb high-precision geochronological studies have shown rapid emplacement of the intrusive doleritic component of the Karoo Large Igneous Province (KLIP) in Southern Africa. However, these studies focused on a relatively small geographic and altitudinal region of the KLIP. Additionally, the timing of initiation of extrusive volcanism, preserved in the Drakensberg-Lesotho highlands and its relationship to the intrusive suite, has only been imprecisely constrained by Ar-Ar dates. Here, we present new high-resolution U-Pb zircon ages on dolerite sills and dykes from across the cen
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10

Ojija, Fredrick, and Cecilia Leweri. "People’s Knowledge and Perceptions Towards Bee–Pollinators in the Southern Highlands, Tanzania: Conservation Implications and Strategies." Tropical Conservation Science 15 (January 2022): 194008292211266. http://dx.doi.org/10.1177/19400829221126696.

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Background and research aims Bees are important pollinators of flowering wild plants and agricultural crops that contribute significantly towards food security, improving people’s livelihoods, and maintaining genetic diversity in plant communities. However, the decline of the bee population due to anthropogenic changes and limited knowledge of bees is threatening bee diversity, particularly in sub–Saharan Africa. Negative perceptions, that is, fear and disgust, are common emotions that lead to a lack of support for bee conservation. Understanding local people’s perceptions is vital as it can h
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11

Ratomaharo, Julia, Olinto Linares Perdomo, Dave S. Collingridge, et al. "Spirometric reference values for Malagasy adults aged 18–73 years." European Respiratory Journal 45, no. 4 (2014): 1046–54. http://dx.doi.org/10.1183/09031936.00114914.

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The American Thoracic Society (ATS) and European Respiratory Society (ERS) recommend that spirometry prediction equations be derived from samples of similar race/ethnicity. Malagasy prediction equations do not exist. The objectives of this study were to establish prediction equations for healthy Malagasy adults, and then compare Malagasy measurements with published prediction equations.We enrolled 2491 healthy Malagasy subjects aged 18–73 years (1428 males) from June 2006 to April 2008. The subjects attempted to meet the ATS/ERS 2005 guidelines when performing forced expiratory spirograms. We
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12

Tekalign, Meron, Nicole Groot Zevert, Amanuel Weldegebriel, et al. "Do Tourists’ Preferences Match the Host Community’s Initiatives? A Study of Sustainable Tourism in One of Africa’s Oldest Conservation Areas." Sustainability 10, no. 11 (2018): 4167. http://dx.doi.org/10.3390/su10114167.

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Involvement of stakeholders in sustainable tourism, particularly in developing countries, is crucial for the success of tourism development. However, its implementation is often criticized for not considering stakeholders’ needs. This study explores tourists’ preferences for tourism activities, designed by local stakeholders, in one of the oldest conserved parks in East Africa—the Menagesha Suba Forest, in the Central Highlands of Ethiopia. The study area is endowed with natural, cultural and historical, yet undeveloped, tourist attractions. The host community benefits little from tourism and
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13

Titus, Fondo Ambebe. "Assessment of tree species diversity and abundance as a diagnostic tool for regeneration of the Bali-Ngemba forest reserve, north west region, Cameroon." Journal of Biodiversity and Environmental Sciences (JBES) 25, no. 1 (2024): 94–101. https://doi.org/10.5281/zenodo.15260271.

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Human encroachment and activities in protected areas has continued to pose a serious threat to biodiversity around the world. This study assessed tree species diversity and abundance in the Bali-Ngemba Forest Reserve (BNFR) in the Bamenda Highlands of Cameroon, in a bid to obtain baseline data that can guide conservation initiatives. Data were collected through an inventory of tree species in disturbed and undisturbed portions of the reserve and indices including the Sørensen similarity coefficient (Cs), Shannon Wiener diversity index (H) and the Margalef species richness index (d) were
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14

Nair, Kajal, John Singleton, Christopher Holm-Denoma, and Sven Egenhoff. "Detrital Zircon Geochronology of Pennsylvanian-Permian Strata in Colorado: Evidence for Appalachian-Derived Sediment and Implications for the Timing of Ancestral Rocky Mountains Uplift." Mountain Geologist 55, no. 3 (2018): 119–40. http://dx.doi.org/10.31582/rmag.mg.55.3.119.

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Pennsylvanian-Permian time in north-central Colorado corresponds with uplift of the Ancestral Front Range and deposition of the Fountain, Ingleside, and Lyons Formations along its flanks. In southwestern Colorado, deposition of the Molas and Hermosa Formations along the flanks of the Uncompahgre Highlands largely represents Pennsylvanian time. We present new detrital zircon U-Pb geochronology data for the Ingleside and Lyons Formations in north-central Colorado and the Molas and Hermosa Formations in southwestern Colorado to understand sediment provenance and dispersal patterns. We determined
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15

Haruna, Tausi Seleman, Henry Ofori Duah, and Rebecca Lee. "Factors associated with health decision-making autonomy on own healthcare among Tanzanian women: A 2022–2023 demographic health survey study." PLOS One 20, no. 5 (2025): e0302191. https://doi.org/10.1371/journal.pone.0302191.

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Background Women’s health decision-making autonomy is fundamental for the health and well-being of women and their children. It empowers women to make health decisions and exercise their rights and choices surrounding their health. Like most parts of Africa, women’s autonomy in Tanzania remains contentious, with an estimated 19% prevalence of health decision-making autonomy in 2015. Given the impact of women’s health decision-making autonomy on women’s health outcomes and the fact that women’s health decision-making autonomy is an ongoing process affected by advancements in technology, economi
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16

Sepewou Henri, Simo, Honoré Mimche, and Hamidou Kone. "Influence Du Statut De La Femme Sur L’enregistrement A L’etat Civil Des Enfants De Moins De 5 Ans Au Cameroun." European Scientific Journal, ESJ 18, no. 11 (2022): 269. http://dx.doi.org/10.19044/esj.2022.v18n11p269.

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Avoir légalement un nom, une identité, être enregistré à sa naissance est un droit dont doit bénéficier tout enfant. Ce principe est énoncé dans divers instruments des droits de l’homme, notamment la Convention Internationale relative aux droits de l’enfant (articles 7 et 8) et la Charte Africaine des droits de l’enfant. Malheureusement, malgré les initiatives prises au niveau national et international ces dernières années, plus de 33% des enfants de moins de 5 ans ne sont pas enregistrés à l’état civil au Cameroun (INS, 2015). Par ailleurs, au Cameroun, bien que la femme ait un rôle primordia
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17

Madalla, Noel A., Rony Swennen, Allan Brown, et al. "Farmers' preferences for East African highland cooking banana 'Matooke' hybrids and local cultivars." Agriculture & Food Security 12, no. 1 (2023). http://dx.doi.org/10.1186/s40066-023-00407-7.

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Abstract Background An understanding of farmers' preferences of new banana cultivars and their characteristics is critical for developing and selecting cultivars that meet consumer needs. Therefore, phenotypic selection in a genetically variable population remains an important aspect of plant breeding. Methods The participatory varietal selection approach for preference ranking was used on 31 'Matooke' secondary and primary triploid hybrids and local banana cultivars evaluated between 2016 and 2019 in Uganda and Tanzania to investigate how farmers' preference attributes could help breeders ide
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18

Waren, R., J. A. Cartwright, M. C. Daly, and R. Swart. "Late Cretaceous to Early Cenozoic initiation of rifting of the Windhoek Graben, Namibia." South African Journal of Geology, March 20, 2023. http://dx.doi.org/10.25131/sajg.126.0007.

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Abstract The Windhoek Graben is a north-south trending rift in central Namibia that forms a prominent topographic feature bisecting an area of plateau uplift. It occupies a potentially crucial role in the propagation of the Late Cenozoic Southwest African Rift system regarding a possible continuation to the west of the Eiseb Rift. It is an unusual example of intra-continental rifting because it has no significant sediment fill associated with the period of active rifting, and hence the timing of rift activity and its tectonic relevance has not hitherto been established. To constrain the age of
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