East African Plateaus and Rift Valleys. Bailey Willis

1937 ◽  
Vol 45 (2) ◽  
pp. 216-219
Keyword(s):  
1938 ◽  
Vol 91 (1) ◽  
pp. 72
Author(s):  
J. P. ◽  
Bailey Willis
Keyword(s):  

Nature ◽  
1937 ◽  
Vol 139 (3512) ◽  
pp. 339-339
Author(s):  
WILLIAM C. SIMMONS

Nature ◽  
1970 ◽  
Vol 227 (5255) ◽  
pp. 267-268 ◽  
Author(s):  
R. C. SEARLE

Antiquity ◽  
1977 ◽  
Vol 51 (201) ◽  
pp. 25-34 ◽  
Author(s):  
J. E. G. Sutton

During the early post-Pleistocene there flourished right across the middle belt of the African continent a highly distinctive way of life intimately associated with the great rivers, lakes and marshes. This belt–or arc, to be more precise, corresponding roughly with the drought zone of the early 1970s–comprises the southern Sahara and the Sahel from the Atlantic to the Nile and there bends up-river to the East African rift valleys and the equator. Traceable as early as the eighth millennium BC, the zenith of this ‘aquatic civilization’ was achieved in the seventh millennium, being a time when higher rainfall made rivers longer and more permanent and caused lakes to swell and burst their basins (Butzer et al., 1972; Zinderen Bakker, 1972). Around 7000 BC, for instance, fish populations as well as hippos and crocodiles reached the central Saharan highlands, while, to their south, Lake Chad expanded enormously till it overflowed via the Benue and Lower Niger into the Atlantic. In East Africa at the same time the small lakes in the Kenya rift valley rose to combine or to create riverain links over the normal watersheds, while to their north Lake Rudolf reached a height sufficient to help feed the White Nile system.


Author(s):  
P. Evers ◽  
C. Schutte ◽  
C. D. Dettman

S.rodhaini (Brumpt 1931) is a parasite of East African rodents which may possibly hybridize with the human schistosome S. mansoni. The adult male at maturity measures approximately 3mm long and possesses both oral and ventral suckers and a marked gynaecophoric canal. The oral sucker is surrounded by a ring of sensory receptors with a large number of inwardly-pointing spines set into deep sockets occupying the bulk of the ventral surface of the sucker. Numbers of scattered sensory receptors are found on both dorsal and ventral surfaces of the head (Fig. 1) together with two conspicuous rows of receptors situated symmetrically on each side of the midline. One row extends along the dorsal surface of the head midway between the dorsal midline and the lateral margin.


2017 ◽  
Vol 2 (11) ◽  
pp. 73-78
Author(s):  
David W. Rule ◽  
Lisa N. Kelchner

Telepractice technology allows greater access to speech-language pathology services around the world. These technologies extend beyond evaluation and treatment and are shown to be used effectively in clinical supervision including graduate students and clinical fellows. In fact, a clinical fellow from the United States completed the entire supervised clinical fellowship (CF) year internationally at a rural East African hospital, meeting all requirements for state and national certification by employing telesupervision technology. Thus, telesupervision has the potential to be successfully implemented to address a range of needs including supervisory shortages, health disparities worldwide, and access to services in rural areas where speech-language pathology services are not readily available. The telesupervision experience, potential advantages, implications, and possible limitations are discussed. A brief guide for clinical fellows pursuing telesupervision is also provided.


2008 ◽  
Vol 16 (2) ◽  
pp. 121-150 ◽  
Author(s):  
ALDO CHIRCOP ◽  
DAVID DZIDZORNU ◽  
JOSE GUERREIRO ◽  
CATARINA GRILO
Keyword(s):  

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