Results 51 to 60 of about 3,325,785 (290)

Non‐Additive Criteria Assessment in Sustainability Evaluation of High Entropy Alloys: A Toxicity‐Weighted Framework

open access: yesAdvanced Engineering Materials, EarlyView.
Sustainability assessment requires methodologies that appropriately distinguish between additive and non‐additive material properties. A toxicity‐weighted scoring system is developed and applied that accounts for the disproportionate influence of highly toxic constituents through nonlinear weighting functions, providing more realistic estimates than ...
Seth Mehalic   +2 more
wiley   +1 more source

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

open access: yesExpert 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  

Bronchogenic carcinoma: Has the outlook changed?

open access: yesSouth African Family Practice, 2004
Background: The purpose of the study was to determine the proportion of patients with bronchogenic carcinoma amenable to curative surgery at diagnosis. Methods: A retrospective approach was used in the setting of an academic hospital.
F.I. Hashmi, M.J. Mpe
doaj   +1 more source

Intracrystalline Void‐Mediated Toughening of Brittle Crystals in Quail Eggshells

open access: yesAdvanced Functional Materials, EarlyView.
In quail eggshells, the high density and disordered arrangement of intracrystalline voids inhibit lattice cleavage, suppress long‐range crack propagation, and promote deformation twinning and quasi‐plasticity, serving as an essential toughening motif. We show that these voids remain within a narrow subcritical size range and therefore predominantly do ...
Jingxiao Zhong   +16 more
wiley   +1 more source

Exploring HIV Testing Models for Differentiated Service Delivery in Southern Africa: A Systematic Review [PDF]

open access: yesJournal of Evidence Based Health Policy, Management & Economics, 2023
Background: Targeting HIV testing services, as the World Health Organization (WHO) recommended in 2015, fast-tracks the identification of individuals with HIV and addresses the persisting HIV testing gap which might delay epidemic control. Following this
Hamufare Dumisani Mugauri   +5 more
doaj  

Heteroengineering‐Induced Electronic Reconstruction for Ammonium‐Ion Energy Storage

open access: yesAdvanced Functional Materials, EarlyView.
An integrated electronic reconstruction behavior is induced by local heteroengineering on VO2(B) electrode material surface of NH4+ supercapacitor, rationally modulating the electronic structure, enabling enhanced intrinsic conductivity and extra driving force for NH4+ intercalation reaction.
Ji‐Chi Liu   +11 more
wiley   +1 more source

Natural resource management and land reform in southern Africa [PDF]

open access: yes, 2006
Throughout southern Africa, land holdings have remained significantly skewed between rich and poor, with discriminatory land tenure systems reflecting the land and agricultural policies adopted in colonial times and after independence (Fortin 2005; Moyo ...
Manjengwa, Jeanette
core   +1 more source

A case of cerebral venous thrombosis following the use of contraceptive medication

open access: yesSouth African Journal of Radiology, 2000
Cerebral venous thrombosis is an uncommon and serious complication of contraceptive medication, which often masquerades as a simple headache. The clinical picture is often confusing and imaging is critical to the diagnosis of this disorder.
G. Bunea, I. B. Copley, O. Ajani
doaj   +1 more source

Gaucher's disease in Southern Africa.

open access: yesSouth African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde, 1974
A review of the clinical features of Gaucher's disease is presented, with particular reference to 17 patients in South Africa. The management, prognosis, mode of inheritance and genetic risks are discussed. It is estimated that there may be as many as 50 affected individuals among the Ashkenazi Jews in South Africa.S. Afr. Med. J., 48, 1295 (1974).
Beighton, P, Sacks, S
openaire   +3 more sources

Integrating Genetics With Epidemiological Measurements Identifies Burden QTLs of Inflammatory Bowel Disease across 20 Countries

open access: yesAdvanced Science, EarlyView.
The burden quantitative trait locus (bQTL) analysis integrates epidemiological data from GBD study with genotype of 2 621 978 SNPs from 2414 individuals in 1000 Genomes Project across 20 countries. rs7633471 shows the strongest effect that each increase in centi‐allele frequency of the allele C associated with 10.00 decrease of age‐standardized ...
Chen Sun   +27 more
wiley   +1 more source

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