Author:Omotola, EO; Genthe, Betty; Ndlela, Luyanda L; Olatunji, SODate:Jun 2023Pharmaceutical compounds (PCs) present in the environment can induce adverse toxic consequences on exposed biotic features. Some PCs have been reported to exert fatal impacts on aquatic fauna. However, information on their toxic actions on ...Read more
Author:Long, Craig S; Loveday, Philip W; Forbes, ADate:Mar 2008This paper describes the development of a deformable mirror to be used in conjunction with diffractive optical elements inside a laser cavity. A prototype piezoelectric unimorph adaptive mirror was developed to correct for time dependent phase ...Read more
Author:Vreugdenhil, H; Taljaard, Susan; Slinger, JHDate:Jan 2012Pilot projects are policy instruments mainly applied to introduce or test new practices, concepts or technologies. Pilot projects can lead to a broader policy transition. However, the diffusion process associated with the pilot projects is ...Read more
Author:Govender, Natasha; Barnard, E; Davel, MHDate:Jun 2007Although the complexity of prosody is widely recognised, the lack of widely-accepted descriptive standards for prosodic phenomena has meant that prosodic systems for most of the languages of the world have, at best, been described in ...Read more
Author:Long, Craig S; Loveday, Philip W; Groenwold, AADate:12 Mar 2006Several new planar four node piezoelectric elements with drilling degrees of freedom are presented. The authors begin by deriving two families of variational formulations accounting for piezoelectricity and in-plane rotations. The first family ...Read more
Author:Landman, K; Liebermann, SDate:Mar 2005In SA Crime Quarterly No 8 2004, the argument was made for better use of bylaws by city governments in an effort to prevent crime. Another equally effective tool available to municipalities lies in the area of urban planning. Crime is closely ...Read more
Author:Green, Chéri A; Mans, Gerbrand G; Schmitz, P; McKelly, D; Te Water, MDate:May 2014Municipalities and metropolitan structures are required by law to provide sufficient response to emergency situations. In order to respond efficiently to disasters such as fire and flooding, it is necessary to place facilities optimally. This ...Read more
Author:Fourie, CJS; van Dam, CLDate:Nov 2008electromagnetic geophysical methods, but the frequency domain methods in particular, depend on the skindepth as a guide to the depth of investigation or penetration from the surface. By definition the skindepth is the distance where the initial ...Read more
Author:Lotter-Stark, HCT; Rybick, EP; Chikwamba, Rachel KDate:Nov 2012HIV remains a global burden and without an effective vaccine, it is crucial to develop microbicides to halt the initial transmission of the virus. Several microbicides have been researched with various levels of success. Amongst these ...Read more
Author:Singh, Advaita A; Pillay, Priyen; Kwezi, Lusisizwe; Tsekoa, Tsepo LDate:Dec 2021Despite a reduction in global HIV prevalence the development of a pipeline of new therapeutics or pre-exposure prophylaxis to control the HIV/AIDS epidemic are of high priority. Antibody-based therapies offer several advantages and have been ...Read more
Author:Ma, JKC; Chikwamba, Rachel K; Sparrow, P; Fischer, R; Mahoney, R; Twyman, RMDate:Dec 2005Plant-derived pharmaceuticals are poised to become the next major commercial development in biotechnology. The advantages they offer in terms of production scale and economy, product safety, ease of storage and distribution cannot be matched ...Read more
Author:Hassan, RMDate:Nov 1996A fairly comprehensive range of planting choices made by maize farmers in Kenya (including discrete endogenous variables creating self-selectivity) is modelled and estimated as one system of interrelated decisions. Two-stage and three-stage ...Read more
Author:Te Beest, M; Stevens, N; Olff, H; Van der Putten, WHDate:Sep 2009Soil communities and their interactions with plants may play a major role in determining the success of invasive species. However, rigorous investigations of this idea using cross-continental comparisons, including native and invasive plant ...Read more
Author:Iroegbu, AOC; Sadiku, RE; Ray, Suprakas S; Hamam, YDate:Mar 2020Pervasive plastic wastes, pollution and detrimental environmental ethics are a serious threat in South Africa. Compared with global trends, most studies undertaken on plastic pollutions in water bodies across South Africa have generally been ...Read more
Author:Du Plessis, WPDate:Jan 2012The effect of platform skin return on retrodirective cross-eye jamming is analysed, allowing the parameters of a cross-eye jammer in the presence of skin return to be determined. The inherently unknown phase of the platform skin return is ...Read more
Author:Manoto, Sello L; Lugongolo, Masixole Y; Govender, Ureshnie; Mthunzi-Kufa, PatienceDate:Mar 2018Human immunodeficiency virus (HIV) is a global health problem. Early diagnosis, rapid antiretroviral therapy (ART) initiation and monitoring of viral load are the key strategies for effective HIV management. Many people in resource limited ...Read more