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Novel syntheses of 5- and 7- azaindole derivatives

Leboho, Tlabo Caiphus (2014-03-05)

This thesis describes the application of the Sonogashira coupling reaction to access a variety of 5-and 7-azaindoles derivatives. The background chapter paints a picture about the importance of indole-containing compounds ...

Novel synthetic methodology for the assembly of a-carbolines and 7-azaindoles

Henning, Hendrik (2018)

The a-carbolines and 7-azaindoles are part of a larger family of compounds derived from indoles and other heterocyclic compounds that are prevalent in nature often as biologically active compounds. The synthesis of ...

A novel tablet design for zero-order sustained-release

Sundy, Erica (2002-01-28)

A coated doughnut-shaped tablet is evaluated as its ability to release model drugs at a zero-order rate for 8 to 12 hours. The doughnut-shape tablets were compressed using special designed punches.Automated technology is ...

A novel test method for minimising energy costs in IGBT power cycling studies

Beutel, Andreas Alan (2008-03-10)

Insulated Gate Bipolar Transistors (IGBTs) are popular power electronic switching devices with several advantages. However, they have been known to fail in the field when subjected to significant variations in power ...

Novel variant for application as a prolonged release drug delivery system

Kgesa, Teboho (2015)

The dissertation aims to discuss the disulphide and thiol chemistry for use in drug delivery. In particular it focuses on the use of the modified native ovalbumin polymer as a vehicle for the thiol containing captopril. ...

NRENs as ICT infrastructure to support e-Services at universities: a case of Wits University

Sekgobela, Euguenia (2015)

The research report examined the value brought by NRENs, by investigating the utilization of the South African National Research Network (SANReN) at the University of the Witwatersrand (Wits). It explored the SANReN as the ...

'Nterata'/'The Wire': fences, boundaries and cultural resistance in the Potgietersrust District.

Hofmeyer, Isabel (1990-02-06)

Nuchal translucency as a method of first trimester screening for aneuploidy in a South African population

Naidoo, Poovangela (2008-03-14)

ABSTRACT Nuchal Translucency as a method of First Trimester Screening for Aneuploidy in a South African population Background Chromosomal abnormalities constitute 15% of congenital abnormalities and 50% of pregnancy ...

Nuclear energy :a new threat to South Africa's Heritage? The case of public participation and heritage protection at thyspunt, Eastern Cape, South Africa

Hlangani, Mfundo (2019)

This study focuses on Thyspunt area in the Eastern Cape Province where an extensive Environmental Impact Assessment (EIA) was conducted for over 5 years. The Heritage Impact Assessment (HIA) revealed that Thyspunt contains ...

Nuclear ferromagnetism

Frohlich, H; Nabarro, F.R.N. (Physical Society, 1947)

It is shown that at sufficiently low temperatures metals become ferromagnetic owing to an orientation of the nuclear spins. The domain structure of such ferromagnetics is analogous to that of ordinary ferromagnetics.

Nucleic acid amplification testing for the diagnosis of osteo-articular tuberculosis

Naicker, Dharshen (2020)

Osteo-articular tuberculosis constitutes a significant burden of extrapulmonary tuberculosis infection. The identification of Mycobacterium tuberculosis (Mtb) in osteo-articular specimens by traditional microscopy and ...

Nucleic acid sequence analysis of the distal X gene region containing the basic core promoter of the hepatitis B virus in southern African asymptomatic carriers of the virus and hepatocellular carcinoma patients

Baptista, Marina Da Conceicao Pinto Azevedo (2014-03-07)

The purpose of this study was to identify mutations in the basic core promoter and enhancer II region a* the hepatitis B virus (HBV) that might result in the hepatitis B virus e antigen (HBeAg)-negative phenotype and ...

Nudity in the name of social change: Twitter reactions to the Marie Claire South Africa 2015 Naked Campaign

Sibanda, Moagisi Refilwe (2016)

Since 2007, Marie Claire South Africa (SA) — which is a glossy women’s magazine covering fashion and beauty trends, sex, relationships, body image, and celebrity news — has been running a special issue of the print magazine ...

Nuemerical simulation of multiphase dynamics in doplet microfluids

Mbanjwa, Mesuli Bonani (2019)

This work aimed to investigate dynamics involving mass transport in droplet flowing in microchannels system using numerical modelling and simulation. Droplet-based microfluidics or droplet microfluidics is a branch of ...

A number balance approach to the modelling of the leaching of particles in multiple well-mixed tanks

Unknown author (2015-01-14)

Number of lymph nodes identified in resected specimens of colorectal cancer from a variety of South African Hospitals: a retrospective study

Du Plooy, Philippus Theunis (2011-11-23)

a variety of South African Hospitals: a retrospective study Purpose: To examine the number of lymph nodes present in specimens submitted for histological examination from a variety of South African hospitals; the ...

Number of people with difficulty seeing detected by community rehabilitation workers in the Limpopo Province of South Africa, with special reference to cataracts

Twine, Rhian (2013-06-13)

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Number pattern: developing a sense of structure with primary school teachers

Du Plessis, Jacques Desmond (2017)

Number strategies of Grade 2 learners: learning from performance on the learning framework in number test and the Grade 1 annual national assessments

Weitz, Maria S. (2013-05-29)

Several commentators describe the low performance of South African students in mathematics as ‗a crisis‘. In the Foundation Phase specifically, there is evidence of a lack of shift from concrete counting-based strategies ...

Numerical analysis of temperature development in concrete at an early age.

Patini, Anthony. (2012-01-30)

The exothermic reaction associated with hydrating Portland Cement releases a significant amount of heat within concrete elements. These raised temperatures could give rise to thermal cracking which is a function of ...

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