Results 81 to 90 of about 2,533,564 (305)

Selective Electrolysis of Water Under Artificial Seawater Conditions Using Transition Metal Borate Anodes

open access: yesAdvanced Energy Materials, EarlyView.
The borate‐based cobalt‐iron catalyst promotes selective oxidation of water rather than chlorine evolution reaction during electrolysis of seawater. When integrated into a zero‐gap electrolyzer prototype, this catalyst supports robust splitting of artificial seawater into oxygen and hydrogen on an extended timescale.
Ananta R. Fareza   +10 more
wiley   +1 more source

Public Statement on COVID-19

open access: yesSouth African Journal of Science, 2020
Academy of Science of South Africa (ASSAf)
doaj   +1 more source

Population Census 1970 [PDF]

open access: yes, 1970
The 1970 South African Population Census was enumerated on a de facto basis, that is, according to the place where persons were located during the census.
Statistics South Africa
core  

Did the Indian Green Revolution Change the Farm Size–Productivity Relationship?

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT We examine the relationship between farm size and productivity during India's Green Revolution, a period of rapid technological transformation. Using a unique panel of over 5000 Indian farm households that spans the Green Revolution (1971–1999), we show that the classic (linear) inverse farm size–productivity relationship gradually evolved ...
Rabail Chandio, Leah E. M. Bevis
wiley   +1 more source

Strengthening early childhood development (ECD) programmes in post- COVID-19 in Zimbabwe

open access: yesPerspectives in Education
This study explored strategies to rebuild and strengthen Zimbabwe’s early childhood development (ECD) programmes in the post-COVID-19 era, focusing on inclusive, resilient, and communitydriven approaches that address systemic inequities.
Greetings Kudakwashe Chigonda   +2 more
doaj   +1 more source

FOREIGN CAPITAL AND AFRICA’S ECONOMIC PROGRESS: FACTS FROM NIGERIA AND SOUTH AFRICA [PDF]

open access: yes, 2007
Foreign capital inflow is usually believed as a means of supplementing domestic capital. The paper examined the influence of foreign capital on Africa’s economic progress focusing on Nigeria and South Africa (1970-2004).
Osabuohien, E. S. C.
core  

Livestock Tango: U.S. and Latin America Dance Together, but Who Will Lead?

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT This study examines the competitiveness between Latin American and U.S. livestock and meat sectors. We employ a computable general equilibrium modeling framework to evaluate two scenarios: coordinated improvements in Latin American productivity, transport efficiency, and market access (Scenario I), and the minimum productivity gains required ...
Taís C. Menezes   +2 more
wiley   +1 more source

Exploring the roles of AI-powered e-tutors in enhancing self-directed learning in open distance e-learning courses

open access: yesInterdisciplinary Journal of Education Research
Artificial Intelligence (AI) has ushered in a transformative era in education, particularly in the context of Open Distance e-Learning (ODeL). This paper explores the role of AI-powered e-tutors and their potential to revolutionise self-directed learning
Mncedisi Christian Maphalala   +2 more
doaj   +1 more source

Traditional authority, institutional multiplicity and political transition in KwaZulu-Natal, South Africa [PDF]

open access: yes, 2004
Adherents of tradition argue that customary institutions in Africa and the traditional leaders that uphold them have a stabilizing influence, particularly given the inadequacies of many post-colonial African states.
Beall, Jo   +2 more
core  

Sustainable Productivity Growth in Agriculture: The Role of Shifts in R&D Investments and Technology

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT The objective of the paper is to evaluate the long‐term prospects of sustainable productivity growth linked to plausible assumptions on public agricultural R&D investments as the key productivity driver. Second, it investigates the role of changing R&D focus from yield maximization to input saving technologies (fertilizers and pesticides). The
Zuzana Smeets Křístková   +4 more
wiley   +1 more source

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