List of Titles

Nanosecond nonlinear optical limiting properties of new trinuclear lanthanide phthalocyanines in solution and as thin films

- Sekhosana, Kutloano Edward, Amuhaya, Edith, Nyokong, Tebello

Authors: Sekhosana, Kutloano Edward , Amuhaya, Edith , Nyokong, Tebello
Language: English
Type: Article
Identifier: vital:7267 , http://hdl.handle.net/10962/d1020276
Description: 2,4,6-Tris[3-thio-9,10,16,17,23,24-hexa(4-tertbutylphenoxy) phthalocyaninato ytterbium (III) chloride]-s-triazin (3) and its lutetium counterpart (4) were synthesized. The nonlinear optical behavior of 3 and 4 were characterized in solution and when embedded in polymer as thin films. Thin films of complexes 3 and 4 in poly(bisphenol A carbonate) showed improved nonlinear optical properties when compared to solution. Complex 3 showed a lower threshold for optical limiting intensity (Ilim) than complex 4, and for phthalocyanines in general. Ilim values were even lower in films compared to solutions. , Original publication is available at http://dx.doi.org/10.1016/j.poly.2014.08.047
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Nonlinear optical behaviour of indium-phthalocyanine tethered to magnetite or silica nanoparticles

- Sanusi, Kayode, Stone, Justin M., Nyokong, Tebello

Authors: Sanusi, Kayode , Stone, Justin M. , Nyokong, Tebello
Language: English
Type: Article
Identifier: vital:7259 , http://hdl.handle.net/10962/d1020268
Description: Nonlinear absorption and optical limiting properties of indium phthalocyanine (complex 1) tethered to magnetite (SiMNP-1) or silica (SiNP-1) nanoparticles have been investigated using 10 ns pulses at 532 nm laser excitation. The optical limiting behaviours of the nanocomposites and the bare phthalocyanine are compared. Investigation of the triplet state dynamics revealed highly efficient triplet state absorption in the SiMNP-1 dyad. A large nonlinear absorption (βeff) that increased with decrease in the peak input fluence was observed for SiMNP-1. The SiNP-1 composite showed a slight increase in βeff with decreasing peak input fluence. The nonlinear optical data obtained for the SiNP-1 are within the same range of those of the indium phthalocyanine alone. The nanosecond nonlinear absorption and the optical limiting of the nanocomposites are shown to be dominated by a strong excited state absorption from a two-photon pumped state. Nonlinear scattering effects and strong excited state absorption from a two-photon pumped state account for the enhanced optical limiting behaviour of SiMNP-1 relative to the phthalocyanine alone. , Original publication is available at http://dx.doi.org/10.1039/C4NJ01619J
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Novel, soluble, FluXoro functional substituted zinc phthalocyanines; synthesis, characterization and photophysicochemical properties

- Erdoğmuş, Ali, Nyokong, Tebello

Authors: Erdoğmuş, Ali , Nyokong, Tebello
Language: English
Type: Article
Identifier: vital:7235 , http://hdl.handle.net/10962/d1019686
Description: Three novel phthalonitriles and the respective, peripheral tetrakis zinc phthalocyanines were synthesized and characterized using elemental analysis, IR, 1H NMR, mass spectra and electronic spectroscopy. The phthalocyanines displayed good solubility in organic solvents such as CHCl3, DCM, DMSO, DMF, THF and toluene. The presence of a long chain fluorine substitituent was found to result in reduced aggregation. The singlet oxygen, photodegradation, fluorescence quantum yield, triplet quantum yield and triplet life time of the complexes in toluene were determined. The effect of fluoro-functional groups on the photophysical and photochemical parameters of the zinc(II) phthalocyanines are also reported. Fluorescence quantum yields for the complexes ranged from 0.021 to 0.041 , Original publication is available at http://dx.doi.org/10.1016/j.dyepig.2010.01.001
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Novobiocin–ferrocene conjugates possessing anticancer and antiplasmodial activity independent of HSP90 inhibition.

- Mbaba, Mziyanda, de la Mare, Jo-Anne, Sterrenberg, Jason N, Kajewole, Deborah, Maharaj, Shantal, Edkins, Adrienne L, Isaacs, Michelle, Hoppe, Heinrich C, Khanye, Setshaba D

Authors: Mbaba, Mziyanda , de la Mare, Jo-Anne , Sterrenberg, Jason N , Kajewole, Deborah , Maharaj, Shantal , Edkins, Adrienne L , Isaacs, Michelle , Hoppe, Heinrich C , Khanye, Setshaba D
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/122858 , vital:35359 , https://doi.org/10.1007/s00775-018-1634-9
Description: A series of tailored novobiocin–ferrocene conjugates was prepared in moderate yields and investigated for in vitro anticancer and antiplasmodial activity against the MDA-MB-231 breast cancer line and Plasmodium falciparum 3D7 strain, respectively. While the target compounds displayed moderate anticancer activity against the breast cancer cell line with IC50 values in the mid-micromolar range, compounds 10a–c displayed promising antiplasmodial activity as low as 0.889 µM. Furthermore, the most promising compounds were tested for inhibitory effects against a postulated target, heat shock protein 90 (Hsp90).
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Now a jazz from distinctively South African

- Baneshik, Percy

Authors: Baneshik, Percy
Subjects: McGregor, Chris--1936-1990 , Jazz , Jazz musicians , Blue Notes (Musical group : South Africa) , Brotherhood of Breath (Musical group) , Dollar Brand
Language: English
Type: Article
Identifier: vital:13487 , http://hdl.handle.net/10962/d1005622 , McGregor, Chris--1936-1990 , Jazz , Jazz musicians , Blue Notes (Musical group : South Africa) , Brotherhood of Breath (Musical group) , Dollar Brand
Description: Photocopied article from the newspaper the Rand Daily Mail about "South African sound beginning to emerge in Jazz" developed by Chris McGregor. There is also a portrait of Chris McGregor with this article.
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NUMSA Report - Motor industry negotiations

- NUMSA

Authors: NUMSA
Subjects: NUMSA
Language: English
Type: text
Identifier: http://hdl.handle.net/10962/113106 , vital:33707
Description: Today the bosses can see that workers are standing up for their rights. Their organisations are growing. 230 000 metal workers are united in NUMSA and more than 1 million workers are united in COSATU. The united power of workers have forced the bosses to accept changes to the vicious LRA. The united voice of the oppressed and exploited people have forced the bosses government to unban our organisations. And so the workers voice demanding control over their own lives is growing stronger day by day. The bosses can see that the workers have a plan. That workers are marching along a road which will lead them to victory and freedom. But the bosses too come with their own plan. And the bosses plan is aimed at protecting and increasing their profits and priviledges. The bosses plan is trying to force the workers to walk along the road of deregulation and increased profits for the bosses. This plan is seeking to divide workers and so to break their strength. The bosses plan aims to undermine centralised bargaining. They are scared to face the united power of motor workers. So they try to shift bargaining to plant and company level.
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NUMSA workers build co-operatives

- NUMSA

Authors: NUMSA
Subjects: NUMSA
Language: English
Type: text
Identifier: http://hdl.handle.net/10962/114271 , vital:33961
Description: There are two main co-operative activities that are supported by NUMSA. The one is SAWCO in Natal and the other is the project that is starting here in the East Cape. Does NUMSA have a policy on co-operatives? NUMSA in its Central Committee has taken a decision to support co-ops. But NUMSA is still busy thinking of how we can formulate a policy on co-operatives. We are working towards such a policy. So what is NUMSA's aim in giving support to co-ops? In other words, how can organised workers benefit from the support that NUMSA is giving to these co-op activities? Interview with Cde John Gomomo NUMSA East Cape Regional Chairperson We, the organised workers on the shop floor are becoming more and more mobilised and politicised. We do not believe that the struggle should just end on the shop floor. The struggle of organised workers should also benefit the community. Co-operatives is such an activity that can be of interest to all groups of oppressed people. We, the organised workers with all the skills we have gathered in the organisation, we believe that if we take the lead, co-ops could be fully democratised organisations in the community.
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Nurse managers' perceptions of the Eastern Cape department of health employee assistance programme

- Stenge, Nyameka

Authors: Stenge, Nyameka
Subjects: Employee assistance programs -- South Africa -- Eastern Cape , Nurse administrators -- South Africa -- Eastern Cape
Language: English
Type: Thesis , Masters , MA
Identifier: vital:10088 , http://hdl.handle.net/10948/d1021203
Description: Organizations assist employees to deal effectively with demanding work and the work environment, including their personal problems, through an Employee Assistance Programme (EAP). The essence of the EAP is the application of knowledge about behaviour and behavioural health to make accurate assessments, followed by appropriate action to improve the productivity and healthy functioning of the employees. According to the report from the Employee Wellness Directorate of the Eastern Cape, the Employee Assistance Programme Practitioners saw 576 employees in 2010. These statistics only represent a few districts in the Eastern Cape as some districts do not have Employee Assistance Practitioners offering employee assistance, hence this number could be higher. In some instances employees do self-referral, which may increase the number without the managers knowing who is utilizing the EAP. This makes it difficult for the managers to monitor such employees and the effectiveness of the intervention rendered. Managers refer employees but do not have control over whether employees made use of the EAP and on the progress in sessions as they do not always receive the feedback. The Employee Assistance counsellor may receive a written referral from the nursing manager and then consults the referred employee in private. The employee gives consent and then the EAP counsellor addresses the problem at hand. If it is a complex case needing expert intervention arrangements are made. If the intervention requires follow up sessions, the EAP counsellor makes the necessary arrangements through the referring manager until the problem is resolved. The EAP counsellor monitors the employee and asks the manager to support the employee without divulging details of the problem that was being addressed. However, the Nursing Managers do not know how effective the programme is and whether the employees benefit from the use. The above-mentioned problem led the researcher to ask the following questions: • What are the perceptions that Nurse Managers in the Department of Health in the Eastern Cape Province have of the effectiveness of the Employee Assistance Programme? • How can Nurse Managers optimize employees’ use of the EAP? The goal of this study was to identify the perceptions of Nurse Managers of the Employee Assistance Programme in order to determine how the programme’s use can be optimized. The researcher used a qualitative, explorative, descriptive and contextual design. The research population was selected purposively and included the Nursing Managers in the Department of Health in the Chris Hani District, Eastern Cape, who have referred employees to the Employee Assistance Programme. Semi-structured interviews were used during the data gathering process. Interviews were conducted at a venue convenient to the participants. Open-ended questions were asked to enable participants to express their perceptions on the topic. The researcher also used observation and field-notes to ensure that the data gathering provided rich information. The data was analysed using Tesch’s method of data analysis. Trustworthiness was ensured by using Guba’s model of trustworthiness. The ethical strategies of informed consent, confidentiality and anonymity, avoidance of harm and voluntary participation were ensured. Two themes emerged from the data analysis. Theme one showed that the participants had contrasting perceptions regarding the effectiveness of the current Employee Assistance Programme. Some felt that they have benefitted from the programme while others felt differently. Theme two described the participants’ views elated to improving the utilization of the EAP. Positive and negative factors that impacted on the implementation of EAP have been identified. Results show that both the employer and the employees could benefit if EAP is well implemented. Decentralization of EAP could be very cost effective and could save the employer thousands of rands because resources would be utilized better.
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Nyon June 1978

- Unknown

Authors: Unknown
Subjects: McGregor, Chris -- 1936-1990 , Brotherhood of Breath (Musical group) , Blue Notes (Musical group : South Africa) , Dean, Elton
Language: French
Type: Text
Identifier: vital:13785 , http://hdl.handle.net/10962/d1012817
Description: Photocopied program for the Jazz-Nyon festival in Switzerland, where Elton Dean's Ninesense should have been playing but has been replaced at the last minute by Chris McGregor's Blue Notes. Chris McGregor is also playing a piano solo concert the following day. On the first page, there are 3 pictures of Elton Dean's Ninesense members. From top to bottom: Elton Dean playing saxophone, Louis Moholo playing drums and Harry Miller playing Double Bass. A picture of Chris McGregor playing the piano is on the second page.
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