Results 81 to 90 of about 91,891 (264)

Intricacies of French engagement in Sahel with peace prospects

open access: yesSocial Development & Security
The Sahel region faces an extreme human security crisis with complex security challenges rooted in historical, ethnic, and geopolitical ties. Decades of armed violence and unstable socio-political systems have led to deteriorating security conditions ...
Shubhdayini Rajyalaxmi Jandev
doaj   +1 more source

Le Sahel oublié

open access: yesTiers-Monde, 1993
Bernus Edmond, Marchal Jean-Yves, Poncet Yveline. Le Sahel oublié. In: Tiers-Monde, tome 34, n°134, 1993. Agriculture, écologie et développement, sous la direction de Marc Dufumier. pp. 305-326.
Bernus, Edmond   +2 more
openaire   +3 more sources

Monitoring African Megafauna in an Anthropogenic Landscape: A 15‐Year Case Study of the Vulnerable West African Giraffe

open access: yesAnimal Conservation, EarlyView.
We used pattern recognition software to correct misidentifications in a 15‐year photographic database of the last, vulnerable West African giraffe population in Niger. After revealing substantial methodological errors that had inflated population estimates by nearly 19%, we corrected individual encounter histories and applied capture‐mark‐recapture ...
Mara Vukelić   +8 more
wiley   +1 more source

Organic food and farming in West Africa: A systematic review

open access: yesLandbauforschung, 2021
Organic agriculture can play a pivotal role in addressing different challenges (e.g. poverty, biodiversity loss, climate change). However, organic agriculture is ‘knowledge intensive’ and its development requires investments in research and innovation ...
El Bilali, Hamid
doaj   +1 more source

An investigation of surface albedo variations during the recent sahel drought [PDF]

open access: yes, 1979
Applications Technology Satellite 3 green sensor data were used to measure surface reflectance variations in the Sahara/Sahel during the recent drought period; 1967 to 1974.
Hinton, B., Mosher, F. R., Norton, C. C.
core   +2 more sources

Identification and functional validation of a novel disease‐causing variant in the noncoding region of NYX

open access: yesActa Ophthalmologica, EarlyView.
Abstract Purpose Inherited retinal diseases (IRDs) are a clinically and genetically heterogeneous group of disorders, with ~30% of cases remaining genetically unsolved. Complete congenital stationary night blindness (cCSNB) is a subtype of IRD, usually associated with reduced visual acuity, nystagmus and high myopia.
Filip Spanic   +10 more
wiley   +1 more source

Pollenanalytical studies in NE-Nigeria: preliminary results from the Manga Grasslands and Lake Tilla, Biu Plateau [PDF]

open access: yes, 1996
Two sites situated in the Sahelian and Sudanian zones of NE-Nigeria were chosen for pollen analysis. A sediment core from an interdunal depression in the eastern Manga Grassland provides information on the Holocene vegetation history of the Sahel between
Salzmann, Ulrich
core  

Two Norms Collide: EU Policy on Fragile and Conflict‐Affected Countries

open access: yesJCMS: Journal of Common Market Studies, EarlyView.
Abstract The European Union's (EU's) policy towards fragile and conflict‐affected (FCA) countries has been framed by a normative solidarity narrative that promotes and legitimises collective action. Over the past two decades, the EU's commitment to protecting the security of its citizens has increasingly become a strong, competing normative driver of ...
Julian Bergmann, Mark Furness
wiley   +1 more source

Premenstrual sub-occlusive episodes as initial presentation of metastatic breast cancer: a case report of a previously undescribed entity

open access: yesDiscover Oncology
Across the globe, breast cancer remains the most common malignancy in women. Although novel therapies introduced during the last years have helped reducing its mortality, nevertheless it remains a major public health problem associated with considerable ...
Wassim Hamadeh   +5 more
doaj   +1 more source

Analysis of the sensitivity to discrete dividends : A new approach for pricing vanillas [PDF]

open access: yes
The incorporation of a dividend yield in the classical option pricing model of Black- Scholes results in a minor modification of the Black-Scholes formula, since the lognormal dynamic of the underlying asset is preserved. However, market makers prefer to
Arnaud Gocsei, Fouad Sahel
core  

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