Results 61 to 70 of about 3,740,526 (342)

Changes in self‐reported HIV testing during South Africa's 2010/2011 national testing campaign: gains and shortfalls

Journal of the International AIDS Society, 2016
Objectives HIV counselling and testing is critical to HIV prevention and treatment efforts. Mass campaigns may be an effective strategy to increase HIV testing in countries with generalized HIV epidemics.
Brendan Maughan‐Brown, Neil Lloyd, Jacob Bor, Atheendar S Venkataramani   +3 more
doaj   +1 more source

Domestic Free-Range Pig Genetic Resources in Southern Africa: Progress and Prospects

Diversity, 2020
Pig genetic resources in Africa originate from different regions and were introduced through several migration pathways. Genetic analysis has shown a strong phylogeographic pattern, with pigs on the eastern parts showing a high frequency of alleles from ...
Tinyiko Edward Halimani, Obvious Mapiye, Tawanda Marandure, Diedre Januarie, Venancio Edward Imbayarwo-Chikosi, Kennedy Dzama   +5 more
doaj   +1 more source

A dispersal of Homo sapiens from southern to eastern Africa immediately preceded the out-of-Africa migration

Scientific Reports, 2019
Africa was the birth-place of Homo sapiens and has the earliest evidence for symbolic behaviour and complex technologies. The best-attested early flowering of these distinctive features was in a glacial refuge zone on the southern coast 100–70 ka, with ...
T. Rito, Daniel Vieira, Marina Silva, Eduardo Conde-Sousa, Luísa Pereira, P. Mellars, M. Richards, Pedro Soares   +7 more
semanticscholar   +1 more source

Trace Nickel Activated Biphasic Core‐CuOii/Shell‐CuOi Secondary Microspheres Enable Room Temperature Parts‐Per‐Trillion‐Level NO2 Detection

Advanced Engineering Materials, EarlyView.
An idea of designing novel sensors is proposed by creating appropriate Schottky barriers and vacancies between isomorphous Core‐CuOii/ Shell‐CuOi secondary microspheres and enhancing catalytic and spill‐over effects, and electronegativity via spontaneous biphasic separation, self‐assembly, and trace‐Ni‐doping.
Bala Ismail Adamu, Peipei Chen, Shafia Mukhtar Ibrahim, Mukhtar Lawan Adam, Attia Falak, Mokhotjwa Simon Dhlamini, Hanfu Wang, Lingxiang Jiang, Weiguo Chu   +8 more
wiley   +1 more source

Coordinated Multi‐Component Gradient Engineering of Catalyst Layers for Advanced Polymer Electrolyte Fuel Cells

Advanced Functional Materials, EarlyView.
This work presents a continuous linear gradient catalyst layer design, a general strategy for improving membrane electrode assemblies across electrochemical devices. Fabricated via a dual‐nozzle spray coating method, the architecture controls the Pt/carbon ratio, ionomer content and ionomer type across the catalyst layer, enhancing proton conduction ...
Shangwei Zhou, Matt P. Tudball, Yiming Guo, Bia Brandt, Adam Zucconi, Wenjia Du, Junfu Bu, Daniel H. C. Wan, Jianuo Chen, Emanuele Magliocca, Feng Ryan Wang, Alexander J.E. Rettie, Patrick S. Grant, Paul R. Shearing, Rhodri Jervis, Thomas S. Miller   +15 more
wiley   +1 more source

An Exploration of the Alignment between Managers’ Competencies and their Job Functions in the South African Post Office

Expert Journal of Business and Management, 2018
This study explores the alignment of managers’ competencies with their job functions in the South African Post Office. Before alignment was explored, managers’ competencies were determined through self-assessments by managers and peer- assessments by ...
Nicolene DE BEER, Nadia OMAR
doaj  

THE STATE OF TOURISM DEVELOPMENT IN TRANSFRONTIER CONSERVATION AREAS IN SOUTHERN AFRICA [PDF]

Geo Journal of Tourism and Geosites
This study adopts a cross-border approach to examining the state of tourism development within the context of Transfrontier conservation areas, based on three case study sites (Botswana, Zambia, and Zimbabwe).
Tembi Maloney TICHAAWA, Refiloe Julia LEKGAU   +1 more
doaj   +1 more source

A review of Gammiella Broth. in Africa : with a range extension to the East African islands and southern Africa [PDF]

, 2003
Gammiella ceylonensis (Broth. in Herzog) W.R.Buck & B.C.Tan is the only species of the genus in Africa. Clastobryella pusilla (Thér.) Wijk & Margad., recorded from Madagascar, the only member of the genus still recorded on the moss checklist for Africa ...
O’Shea, Brian J.
core  

Photothermal Macroporous Lignin Cryogels for Off‐Grid, Continuous Atmospheric Water Collection via Interlayer Heat Recovery

Advanced Functional Materials, EarlyView.
Photothermal, macroporous lignin‐based cryogels are engineered to convert sunlight into low‐grade heat. Integrated as stacked beds in a drum‐type device, a thin copper interlayer transfers waste heat between beds, enabling interlayer heat recovery and continuous solar cycling.
Jie Yan, Jiqing Lu, Tian Bai, Lin Li, Zhaoxuan Niu, Yiying Yue, Wanli Cheng, Guangping Han, Orlando J. Rojas   +8 more
wiley   +1 more source

Effectiveness of an Integrated Tertiary Software Mobile Information System for Student Registration and Admission at a University in Gauteng

Expert Journal of Business and Management, 2017
This study investigates whether the new online registration and admission system implemented at a Tertiary Institution in Gauteng, South Africa, was successful and effective.
Frans MASHABELA, Alan S. PILLAY
doaj