نتایج جستجو برای: namibia
تعداد نتایج: 2486 فیلتر نتایج به سال:
Information and communication technologies (ICT) have transformed the way health services are delivered in today’s global society. For any society, however, it is important to understand how ICT are being deployed to support the delivery of health services to patients. In the case of Namibia, health service providers (HSP) in both the private and public health sectors must have the capability t...
Bush encroachment leads to land degradation in semiarid to arid regions. Over 45 million hectares of agricultural land in Namibia are affected. This is worrisome as nearly 70% of the Namibian population depends on agricultural activities and the beef industry is the mainstay of the farming communities. This study employed secondary data sources to provide a review of the problems and benefits o...
Euphorbia otjipembana was hitherto only known from the type locality within the Kaokoveld Centre of Endemism, northwestern Namibia. Subsequently several additional populations were discovered, allowing for an amplified description of the species and the recognition of two subspecies. Euphorbia otjipembana subsp. okakoraensis, here described as a new subspecies, is only known from a small area w...
The H.E.S.S. experiment in Namibia, which currently consists of four Cherenkov telescopes, will be extended in phase II by a fifth, larger telescope. This new telescope with its 890 mirrors poses new challenges on the design of the Mirror Alignment Control System. Important features of the new developed design are, apart from the scalability for future experiments, the possibility to do a fast ...
OBJECTIVE Bacterial meningitis is a medical emergency associated with high mortality rates. Cerebrospinal fluid (CSF) culture is the "gold standard" for diagnosis of meningitis and it is important to establish the susceptibility of the causative microorganism to rationalize treatment. The Namibia Standard Treatment Guidelines (STGs) recommends initiation of empirical antibiotic treatment in pat...
[1] A large (11–15%) negative shift in dC is observed in shallow water carbonates directly beneath Neoproterozoic glacial deposits (or correlative disconformity) in northwest Namibia ascribed to a snowball Earth. Reproducibility and stratigraphic concordance of this anomaly in 16 sections across the ancient continental shelf support a primary origin, and field relations show it predates the fal...
A sample of selected active galactic nuclei (AGN) was observed in 2003 and 2004 with the High Energy Stereoscopic System (HESS), an array of imaging atmospheric-Cherenkov telescopes in Namibia. The redshifts of these candidate very-highenergy (VHE, >100 GeV) γ-ray emitters range from z = 0.00183 to z = 0.333. Significant detections were already reported for some of these objects, such as PKS 21...
How much copper can the pearceite structure sustain? The case of cupropearceite from Tsumeb, Namibia
The intriguing recovery of an extremely Cu-rich cupropearceite crystal (Cu = 7.62 a.p.f.u.) from Tsumeb, Namibia, allowed us to study the effect of the entry of Cu in the positions usually occupied by Ag in the B module layer in the structure of the minerals belonging to the pearceite-polybasite group. Electron microprobe analysis yields the formula [Cu6(As1.89Fe0.01) Σ=1.90S7.05][(Ag8.36Cu0.62...
Discovery of fossils of the Ediacara biota near the top of the Spitzkopf Member at farm Swanpunt extends the known range of these remains in Namibia more than 600 m to near the sub-Cambrian unconformity. The fossiliferous beds occur approximately 100 m above a volcanic ash dated at 543 +/- 1 Ma, and thus may be the youngest Proterozoic Ediacara-type fossils reported anywhere in the world. Fossi...
Namibia hosts the worldwide largest free-ranging cheetah population (Marker-Kraus et al. 1996) with 95% of this population roaming outside of protected areas on commercial farmland (Morsbach 1987, Marker-Kraus & Schumann 1998). Commercial livestock farming and trophy hunting have a large economic importance in Namibia and generate substantial income (Marker-Kraus et al. 1996, Barnes et al. 2001...
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