Suchergebnisse
Suchergebnisse:
14. Okt. 2019 · In one account, white people noticed that enslaved African men would “snap fingers” when greeting a kinsman. Historian James Sweet noted that Domingos Alvares , an African healer and formerly enslaved man who traversed the Atlantic, ritualistically snapped his fingers when performing rituals inspired by spiritual practices in ...
- Tyler Parry
In West Africa, many historians believe the tradition of waist beads was popularized by the Yoruba tribes, notably in Senegal and Ghana (notably the Ewes, Ashantis, Krobos, Ga-Adangbes) where they speak of nobility, femininity, and affluence. Today, countries like Ivory Coast and Sierra Leone have also adopted the waist bead.
19. Sept. 2014 · Greetings in West Africa are often more elaborate than a simple handshake or hello. But the spread of Ebola means people are shunning physical contact with others - including shaking hands....
- 12 Sek.
- Land Cover–Land Use
- Geo-morphology
- Sea-Land Waters
EO land cover algorithms (reviewed in Pandey et al. 2021) can be used to determine the status of beaches/dunes, forests, and other vegetation types such as crops and mangroves, land artificialization (Zanaga et al. 2021). Many EO programs such as Landsat, Sentinel, SPOT, and Pleiades produce a huge volume of medium to high-resolution multispectral ...
3.2.1 Shoreline
A number of methods can be used to monitor the location of shorelines from space, all using optical or radar data processing techniques. For country-scale mapping (e.g., as requested by the West African Coastal Area Management (WACA) program), annual median cloud minimum optical data composites can be downloaded from Google Earth Engine and used to delineate shoreline changes using open-source tools such as Coastsat (Vos et al. 2019a; Bergsma et al. 2020; Almeida et al. 2021) and the Digital...
3.2.2 Topography–Digital Elevation Model
Remote sensing techniques now offer a good alternative for constructing digital elevation models (DEMs) over large spatial areas with sufficient resolution (< 100 m). They include global DEMs such as the 90 m resolution Shuttle Radar Topography Mission (SRTM) collected in the early 2000s (Farr et al. 2007; widely used for large-scale flood modeling, e.g., Ettritch et al. 2018; Neumann et al. 2015; Kulp et al. 2018), as well as the commercial 5 m ALOS AW3D30 DEMs (JAXA, Tadono et al. 2016; 30...
3.2.3 Bathymetry, Toward a Shoreface Land-Sea Coastal Morphology Continuum
To derive nearshore bathymetry, ocean color can be derived from optical missions such as Sentinel-2 and Landsat, from which water depth, seafloor features, and turbidity can be derived simultaneously or independently (Caballero et al. 2019; Salameh et al. 2019; Monteys et al. 2015; Li et al. 2021; Cesbron et al. 2021). The calculated bathymetry is not the depth of the consolidated sediment bedrock, but the depth of the suspended sediment layers in the mud. On muddy coasts, the data provide in...
3.3.1 Sea Level
Contemporary sea-level changes along the West African coast are routinely obtained from a dedicated reprocessing of satellite altimetry data as part of the ESA Climate Change Initiative sea-level project. High sampling rate (20 Hz) sea level data from the Jason-1 and Jason-2 missions over a 14-year period (July 2002 to June 2016) are considered. The data are first tracked using the adaptive leading-edge sub-probe tracker ALES (Cazenave et al. 2020). The X-TRACK processing system developed to...
10. Jan. 2024 · 1:50. China’s lending to Africa may rise for the first time since 2016 as pledges to finance projects ranging from renewable energy to natural gas increase, Standard Chartered Plc said.
Vor 2 Tagen · western Africa, region of the western African continent comprising the countries of Benin, Burkina Faso, Cameroon, Cabo Verde, Chad, Côte d’Ivoire, Equatorial Guinea, The Gambia, Ghana, Guinea, Guinea-Bissau, Liberia, Mali, Mauritania, Niger, Nigeria, Senegal, Sierra Leone, and Togo.
Washabaugh’s team compared traditional cell culture with the Hygiena EnSURETM MicroSnap EB test, which can detect and enumerate members of the Enterobacteriaceae family, including E. coli, Klebsiella, Citrobacter, Enterobacter, Serratia, Shigella, Salmonella and Yersinia.
