Browsing by Title
Now showing items 6650-6669 of 35418
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Deep-brain stimulation associates with improved microvascular integrity in the subthalamic nucleus in Parkinson's disease
(Elsevier, 2015)Deep brain stimulation (DBS) of the subthalamic nucleus (STN) has become an accepted treatment for motor symptoms in a subset of Parkinson's disease (PD) patients. The mechanisms why DBS is effective are incompletely ... -
Deepening democracy and enhancing multi-level governance: deficiencies of and prospects for local government ward committees in South Africa
(Buro vir Wetenskaplike Tydskrifte, Potchefstroom, 2009)The South African local government system has a number of shortcomings, two of which relate to the role of local government in the deepening of participatory democracy and the position of local government in a system of ... -
Deeper H.E.S.S. observations of Vela Junior (RX J0852.0-4622): morphology studies and resolved spectroscopy
(EDP Sciences, 2018)Aims. We study γ-ray emission from the shell-type supernova remnant (SNR) RX J0852.0−4622 to better characterize its spectral properties and its distribution over the SNR. Methods. The analysis of an extended High Energy ... -
Deeper knowledge of shallow waters: reviewing the invertebrate fauna of southern African temporary wetlands
(Springer, 2019)Temporary lentic wetlands are becoming increasingly recognised for their collective role in contributing to biodiversity at the landscape scale. In southern Africa, a region with a high density of such wetlands, information ... -
Default weighted survival analysis to directly model loss given default
(SASA, 2018)Traditionally when predicting loss given default (LGD), the following models can be used: beta regression, inverse beta model, fractional response regression, ordinary least squares regression, survival analysis, run-off ... -
Defending the absurd: the Iconoclast's guide to section 47(1) of the Superior Courts Act 10 of 2013
(2014)This contribution was intended as a defence of section 25(1) of the Supreme Court Act 59 of 1959. However, the Supreme Court Act was repealed in August 2013 and replaced by the Superior Courts Act 10 of 2013, and in the ... -
Defensive active coping facilitates chronic hyperglycaemia and endothelial dysfunction in African men: the SABPA study
(Elsevier, 2013)Background: Dissociation between behavioural defensive active coping (AC) control albeit physiological “loss of control” responses was associated with silent ischaemia and structural wall abnormalities in African men. Whether ... -
Defensive coping and essential amino acid markers as possible predictors for structural vascular disease in an African and Caucasian male cohort: the SABPA study
(Wiley, 2017)Defensive coping (DefS), oxidative stress, inflammation, and related amino acids (phenylalanine [Phe] and tyrosine [Tyr]) have been implicated in cardiovascular disease. This study assessed whether inflammation, oxidative ... -
Defensive coping and renovascular disease risk. Adrenal fatigue in a cohort of Africans and Caucasians: the SABPA study
(Elsevier, 2015)Background: Defensive coping is an established cardiovascular risk factor in Africans. Additionally, chronic, excessive or inadequate hypothalamic pituitary adrenal axis (HPAA) stress responses could either increase or ... -
Defensive coping and subclinical vascular disease risk – associations with autonomic exhaustion in Africans and caucasians: the SABPA study
(Elsevier, 2012)Objective The defensive active coping response is a recognised cardiovascular risk factor in Africans, especially in men. It is uncertain whether autonomic dysfunction might be the underlying cause. We therefore investigated ... -
Defensive coping facilitated a smaller cortisol-to-estradiol ratio and a higher hypertension risk: the SABPA study
(Taylor & Francis, 2018)Objectives: Taxing psychosocial stress and defensive coping have been associated with hypoactivity in cortisol, a vasoconstrictive agent. Estradiol has vasodilatory properties with cardio- and neuroprotective effects. It ... -
Defensive coping facilitates higher blood pressure and early sub–clinical structural vascular disease via alterations in heart rate variability: the SABPA study
(Elsevier, 2013)Objectives: Defensive coping (AC) responses in urban African males have been associated with vascular responsiveness, partly explaining autonomic nervous system dysfunction. We therefore aimed to assess whether AC responses ... -
Defensive coping, urbanization, and neuroendocrine function in Black Africans: the THUSA study
(Wiley, 2012)Dissociation between b-adrenergic behavioral and physiological defensive active coping (AC) responses was associated with cardiometabolic risk in urban but not rural African males. Whether this is partly driven by underlying ... -
Deference and diffèrance: judicial review and the perfect gift
(2006)The highest courts in both Canada and South Africa have expressed themselves in favour of an approach of deference as respect in the review of administrative action. The notion of deference as respect derives from ... -
Defining and calculating steric strain in the first step of the dissociative alkene metathesis mechanism using Grubbs 1-type catalysts
(North-West University (South Africa), Potchefstroom Campus, 2016)During the dissociative alkene metathesis mechanism, a phosphine ligand dissociates from the ruthenium metal of a Grubbs 1-type catalyst leading to the active 16-electron Grubbs 1-type catalyst with an open coordination ... -
Defining fairness in dismissals of unauthorised foreign nationals
(PER/PELJ, 2020)It is trite that if a person's employment is prohibited by law it is not possible for such a person to perform his or her work lawfully. However, people are employed despite failing to comply with statutory requirements. ... -
Defining perceived employability: a psychological approach
(Emerald, 2014)Purpose – The purpose of this paper is to define employability within the psychological literature with a focus upon perceived employability. Design/methodology/approach – To achieve the aim, the paper defines five objectives ... -
Defining performance targets through interpretation of standard comparative performance information
(North-West University, 2004)Setting performance targets for a business is a strategically important function. These targets focus the efforts of teams and team members, and as such define the direction of development of the business's competencies ... -
Defining the role of the independent environmental control officer (ECO) in compliance monitoring and enforcement
(University of KwaZulu-Natal, 2012)Currently an entire unregulated industry of Environmental Control Officers (ECOs) is active at various construction sites across South Africa. While the expected role of ECOs is generally to ensure that environmental ... -
Defining the Urban Edge - A Guide to its Implementation for Sustainable Development
(PER/PELJ, 2022)As relics of the legacy of apartheid, the boundaries of cities have expanded exponentially. The notion of the urban edge has therefore been introduced as a planning tool to prevent further sprawl and has become an ...
