Mulch tower treatment system Part I: Overall performance in greywater treatment
- Authors: Zuma, Bongumusa M , Tandlich, Roman , Whittington-Jones, Kevin J , Burgess, Jo E
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/71537 , vital:29862 , https://doi.org/10.1016/j.desal.2008.03.030
- Description: A mulch tower (MT) system for greywater treatment is introduced in this paper. Materials used to assemble the MT system included mulch, coarse sand, fine and coarse gravel. Limited removal efficiency of the MT system was demonstrated for alkalinity, total hardness, pH, Cl–, PO43–, NH4+, and SO42–, with the estimated cumulative removals ranging from 7 to 12%. Intermediate removal efficiency was observed for chemical oxygen demand (COD), NO3–, and S2– with the estimated cumulative removals ranging from 24 to 28%. The highest removal efficiency was observed for the total suspended solids (TSS) with the estimated cumulative removal equal to 52%. Given the minute residence time in the MT system, the results obtained were promising and justify scale-up studies for potential on-site applications. The MT effluent did not meet hygienic norms with respect to the faecal coliform concentration (FC) and the total coliform concentration (TC), and further effluent treatment is required before any discharge or reuse of the treated greywater. Further research should focus on characterisation of the microbial community of the MT, and the fate of Cl–, PO43–, NH4+, and SO42–.
- Full Text: false
- Date Issued: 2009
Map of the country from Algoa Bay to the Great Kei River, Cape of Good Hope : being the eastern frontier and the country of the adjacent kaffirs compiled under the direction of Lieut. Colonel Piper, comg. Royal Engr., from the original surveys in the Royal Engineer Office, Cape Town, and other documents furnished by the Surveyor General's Department.
- Authors: Wyld, James, 1812-1887
- Date: 1849
- Subjects: South Africa -- History -- Frontier Wars, 1811-1878 -- Maps Maps , Cape of Good Hope (Colony) -- Maps Maps , South Africa
- Language: English
- Type: cartographic , map
- Identifier: http://hdl.handle.net/10962/57103 , vital:26846 , Cory Library for Humanities Research, Rhodes University Library, Grahamstown, South Africa MP151 , MP151
- Description: Lithographed by James Wyld, geographer to the Queen 457 Strand, 11 & 12 Charing Cross S.W. and 2 Royal Exchange E.C.,1849. Note: the position of the military posts are marked by a red circle, and the present colonial boundary is marked with a red tint. Copy of the original.
- Full Text: false
- Date Issued: 1849
Designing writing groups to support postgraduate students’ academic writing: a case study from a South African university
- Authors: Wilmot, Kirstin
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/66267 , vital:28926 , https://doi.org/10.1080/14703297.2016.1238775
- Description: publisher version , This paper reports on a writing group pilot programme implemented at a South African university. Drawing on literature, anonymous student evaluations and facilitator observations, it discusses the use of writing groups for supporting postgraduate academic writing practices. Developed within a broader postgraduate academic writing support programme, the paper discusses a case study of two pilot writing groups: a multidisciplinary long-term group and a disciplinary short-term ‘writing-intensive’ group. The findings indicate that the overall experience of the writing group was a positive one, with each group presenting varied ‘success’ aspects as well as challenges. Insights gleaned may contribute to our understanding of how these groups can be utilised to support postgraduate students and how different kinds of groups can be developed to serve particular student needs. The paper concludes with a discussion of the inclusion of a disciplinary expert, which proved particularly useful in this pilot.
- Full Text: false
- Date Issued: 2018
Chris McGregor's Blue Notes London debut in April 1965
- Authors: Wilmer, Val
- Subjects: McGregor, Chris--1936-1990 , Pukwana, Dudu , Moholo, Louis T.--1940- , Feza, Mongezi , Dyani, Johnny Mbizo , Blue Notes (Musical group : South Africa) , International Communication Association (ICA) , Jazz musicians
- Language: English
- Identifier: vital:13939 , http://hdl.handle.net/10962/d1006462 , McGregor, Chris--1936-1990 , Pukwana, Dudu , Moholo, Louis T.--1940- , Feza, Mongezi , Dyani, Johnny Mbizo , Blue Notes (Musical group : South Africa) , International Communication Association (ICA) , Jazz musicians
- Description: Black and white photo (front and back) of Chris McGregor's Blue Notes London debut at ICA in Dover Street, the 26th of April 1965. From left to right: Dudu Pukwana (alto sax), Mongezi Feza (trumpet), Johnny Dyani (double bass) and Chris McGregor (piano).
- Full Text:
Harry Miller playing double bass.
- Authors: Wilmer, Val
- Subjects: McGregor, Chris--1936-1990 , Miller, Harry , Jazz , Jazz musicians
- Language: English
- Identifier: vital:13941 , http://hdl.handle.net/10962/d1006465 , McGregor, Chris--1936-1990 , Miller, Harry , Jazz , Jazz musicians
- Description: Black and white photo (front and back) of Harry Miller playing double bass. There is a stamp on the back indicating name, address and registration number of the photographer.
- Full Text:
Chris McGregor and Johnny Dyani at Blue Notes London debut in April 1965
- Authors: Wilmer, Val
- Subjects: McGregor, Chris--1936-1990 , Dyani, Johnny Mbizo , Blue Notes (Musical group : South Africa) , Jazz , Jazz musicians , International Communication Association (ICA)
- Language: English
- Identifier: vital:13936 , http://hdl.handle.net/10962/d1006456 , McGregor, Chris--1936-1990 , Dyani, Johnny Mbizo , Blue Notes (Musical group : South Africa) , Jazz , Jazz musicians , International Communication Association (ICA)
- Description: Black and white photo (front and back) of Chris McGregor and Johnny Dyani playing at Blue Notes London debut at the International Communication Association (ICA) in Dover Street, the 26th of April 1965.
- Full Text: false
Dudu Pukwana at home
- Authors: Wilmer, Val
- Subjects: McGregor, Chris--1936-1990 , Pukwana, Dudu , Jazz , Jazz musicians
- Language: English
- Identifier: vital:13940 , http://hdl.handle.net/10962/d1006464 , McGregor, Chris--1936-1990 , Pukwana, Dudu , Jazz , Jazz musicians
- Description: Black and white photo (front and back) of Dudu Pukwana at home (Peckham, London) holding his saxophone.
- Full Text:
Blue Notes playing in London (ICA) in 1964
- Authors: Wilmer, Val
- Subjects: McGregor, Chris--1936-1990 , Pukwana, Dudu , Moholo, Louis T.--1940- , Dyani, Johnny Mbizo , Feza, Mongezi , Blue Notes (Musical group : South Africa) , Jazz musicians
- Language: English
- Identifier: vital:13935 , http://hdl.handle.net/10962/d1006455 , McGregor, Chris--1936-1990 , Pukwana, Dudu , Moholo, Louis T.--1940- , Dyani, Johnny Mbizo , Feza, Mongezi , Blue Notes (Musical group : South Africa) , Jazz musicians
- Description: Black and white photo of the group Blue Notes in London (ICA) in 1964 (front and reverse). At the back, from left to right: Louis Moholo is playing the drums, Johnny Dyani playing double bass, Chris McGregor playing piano. At the front, from left to right: Dudu Pukwana is playing alto saxophone and Mongezi Feza is holding a trumpet.
- Full Text: false
Chris McGregor posing outside
- Authors: Wilmer, Val
- Subjects: McGregor, Chris--1936-1990 , Jazz , Jazz musicians
- Language: English
- Identifier: vital:13938 , http://hdl.handle.net/10962/d1006460 , McGregor, Chris--1936-1990 , Jazz , Jazz musicians
- Description: Black and white photo (front and back) of Chris McGregor posing outside with cows in the background, in Alfriston, Sussex (England) in 1972.
- Full Text: false
Johnny Dyani at Blue Notes London debut in 1965.
- Authors: Wilmer, Val
- Subjects: McGregor, Chris--1936-1990 , Dyani, Johnny Mbizo , Blue Notes (Musical group : South Africa) , Jazz musicians
- Language: English
- Identifier: vital:13942 , http://hdl.handle.net/10962/d1006467 , McGregor, Chris--1936-1990 , Dyani, Johnny Mbizo , Blue Notes (Musical group : South Africa) , Jazz musicians
- Description: Black and white photo (front and back) of Johnny Dyani playing the double bass at Blue Notes London debut at ICA in Dover Street, 26th of April 1965.
- Full Text:
Chris McGregor at his Piano smoking a pipe
- Authors: Wilmer, Val
- Subjects: McGregor, Chris--1936-1990 , Jazz , Jazz musicians
- Language: English
- Identifier: vital:13937 , http://hdl.handle.net/10962/d1006459 , McGregor, Chris--1936-1990 , Jazz , Jazz musicians
- Description: Photo in black and white of Chris McGregor sitting at his Piano with an handwriting composition on the piano stand , smoking a pipe. The photo has been taken at Clifton Gardens Lack in 1970 by Val Wilmer member of the National Union of Journalists
- Full Text: false
Chris McGregor with a horse.
- Authors: Wilmer, Val
- Subjects: McGregor, Chris--1936-1990 , Jazz , Jazz musicians
- Language: English
- Identifier: vital:13945 , http://hdl.handle.net/10962/d1006472 , McGregor, Chris--1936-1990 , Jazz , Jazz musicians
- Description: Black and white photo (front and back) of Chris McGregor with a horse at Milton Court Farm, Alfriston in 1972. There is a stamp of the photographer's details and a sticker with Chris McGregor's postal address in France.
- Full Text:
Mongezi Feza and Barre Phillips playing their instruments
- Authors: Wilmer, Val
- Subjects: McGregor, Chris--1936-1990 , Feza, Mongezi , Phillips, Barre , Jazz musicians
- Language: English
- Identifier: vital:13943 , http://hdl.handle.net/10962/d1006469 , McGregor, Chris--1936-1990 , Feza, Mongezi , Phillips, Barre , Jazz musicians
- Description: Black and white photo (front and back) of Mongezi Feza playing the trumpet and Barre Phillips playing the double bass at a concert in Cambridge, 2nd of March 1969. A stamp at the back of the photo indicates the photographer's details.
- Full Text:
Mongezi Feza playing Trumpet, 1965
- Authors: Wilmer, Val
- Subjects: McGregor, Chris--1936-1990 , Feza, Mongezi , Jazz , Jazz musicians
- Language: English
- Identifier: vital:13944 , http://hdl.handle.net/10962/d1006471 , McGregor, Chris--1936-1990 , Feza, Mongezi , Jazz , Jazz musicians
- Description: Black and white photo (front and back) of Mongezi Feza playing the trumpet in 1965.
- Full Text:
Docking of HIV protease to silver nanoparticles
- Authors: Whiteley, Chris G , Shing, C-Y , Kuo, C-C , Lee, Duu-Jong
- Date: 2016
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/67105 , vital:29032 , https://doi.org/10.1016/j.jtice.2015.10.029
- Description: publisher version , This interaction of silver nanoparticles (AgNP) with human immune-deficiency virus aspartic protease (HIVPR) is examined by molecular dynamics simulation using the Colores (Situs) package and biophysical techniques using UV–vis spectroscopy, dynamic light scattering, transmission electron microscopy and circular dichroism. The ‘docking’ of AgNP with HIVPR creates a complex [AgNP–HIVPR] to initiate a hypochromic time-dependent red-shift for the surface plasmon resonance maximum. MD simulations reflect large perturbations to enzyme conformations by fluctuations of both rmsd and B-factors. Increase in changes to electrostatic potentials within the enzyme, especially, with chain B, suggest hydrophobic interactions for the binding of the AgNP. This is supported by changes to mainchain and sidechain dihedrals for many hydrophobic amino acid including Cys95, Trp6 and Trp42. Circular dichroism spectra reveal disappearance of α-helices and β-sheets and increase in random coil first from chain B then chain A. During initial stages of the interactive simulation the enzyme is conformational flexible to accommodate the AgNP, that docks with the enzyme under a cooperative mechanism, until a more stable structure is formed at convergence. There is a decrease in size of the HIVPR–AgNP complex measured by changes to the gyration radius supporting evidence that the AgNP associates, initially, with chain B.
- Full Text: false
- Date Issued: 2016
Computer simulations of the interaction of human immunodeficiency virus (HIV) aspartic protease with spherical gold nanoparticles: implications in acquired immunodeficiency syndrome (AIDS)
- Authors: Whiteley, Chris G , Lee, Duu-Jong
- Date: 2016
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/67083 , vital:29030 , https://doi.org/10.1088/0957-4484/27/36/365101
- Description: publisher version , The interaction of gold nanoparticles (AuNP) with human immune-deficiency virus aspartic protease (HIVPR) is modelled using a regime of molecular dynamics simulations. The simulations of the 'docking', first as a rigid-body complex, and eventually through flexible-fit analysis, creates 36 different complexes from four initial orientations of the nanoparticle strategically positioned around the surface of the enzyme. The structural deviations of the enzymes from the initial x-ray crystal structure during each docking simulation are assessed by comparative analysis of secondary structural elements, root mean square deviations, B-factors, interactive bonding energies, dihedral angles, radius of gyration (R g), circular dichroism (CD), volume occupied by C α , electrostatic potentials, solvation energies and hydrophobicities. Normalisation of the data narrows the selection from the initial 36 to one 'final' probable structure. It is concluded that, after computer simulations on each of the 36 initial complexes incorporating the 12 different biophysical techniques, the top five complexes are the same no matter which technique is explored. The significance of the present work is an expansion of an earlier study on the molecular dynamic simulation for the interaction of HIVPR with silver nanoparticles. This work is supported by experimental evidence since the initial 'orientation' of the AgNP with the enzyme is the same as the 'final' AuNP-HIVPR complex generated in the present study. The findings will provide insight into the forces of the binding of the HIVPR to AuNP. It is anticipated that the protocol developed in this study will act as a standard process for the interaction of any nanoparticle with any biomedical target.
- Full Text: false
- Date Issued: 2016
Grahamstown : land utilisation in the town, 1953
- Authors: Watts, Hilstan Lett, 1929-
- Date: 1957
- Subjects: f-sa , 2 cm = 2000 yards 30.5595° S, 22.9375° E , Grahamstown (South Africa) Maps , South Africa History 1909-1961 , South Africa History 1836-1909
- Language: English
- Type: maps , digital maps , cartographic
- Identifier: http://hdl.handle.net/10962/120671 , vital:34920 , Cory Library for Humanities Research, Rhodes University Library, Grahamstown, South Africa , T654_6
- Description: Map 6 in the map album accompanying the thesis by Hilstan Lett Watts, "Grahamstown : a socio-ecological study of a small South African town", Rhodes University thesis, 1957. Map signed 1955.
- Full Text: false
- Date Issued: 1957
Grahamstown : rented houses in the sample
- Authors: Watts, Hilstan Lett, 1929-
- Date: 1957
- Subjects: f-sa , 2 cm = 2000 yards 30.5595° S, 22.9375° E , Grahamstown (South Africa) Maps , Grahamstown (South Africa) Street maps , South Africa History 1909-1961 , South Africa History 1836-1909
- Language: English
- Type: maps , digital maps , cartographic
- Identifier: http://hdl.handle.net/10962/121163 , vital:34983 , Cory Library for Humanities Research, Rhodes University Library, Grahamstown, South Africa , T654_15
- Description: Map 15 in the map album accompanying the thesis by Hilstan Lett Watts, "Grahamstown : a socio-ecological study of a small South African town", Rhodes University thesis, 1957. Map signed 1955. The data are from the sample survey of the European area of Grahamstown.
- Full Text: false
- Date Issued: 1957
Grahamstown : a generalisation of the land use pattern
- Authors: Watts, Hilstan Lett, 1929-
- Date: 1957
- Subjects: f-sa , 2 cm = 2000 yards 30.5595° S, 22.9375° E , Grahamstown (South Africa) Maps , South Africa History 1909-1961 , South Africa History 1836-1909
- Language: English
- Type: maps , digital maps , cartographic
- Identifier: http://hdl.handle.net/10962/120695 , vital:34923 , Cory Library for Humanities Research, Rhodes University Library, Grahamstown, South Africa , T654_7
- Description: Map 7 in the map album accompanying the thesis by Hilstan Lett Watts, "Grahamstown : a socio-ecological study of a small South African town", Rhodes University thesis, 1957. Map signed 1955.
- Full Text: false
- Date Issued: 1957
Plan of Grahamstown
- Authors: Watts, Hilstan Lett, 1929-
- Date: 1957
- Subjects: f-sa , 2 cm = 2000 yards 30.5595° S, 22.9375° E , Grahamstown (South Africa) Maps , Grahamstown (South Africa) Road maps , South Africa History 1909-1961 , South Africa History 1836-1909
- Language: English
- Type: maps , digital maps , cartographic
- Identifier: http://hdl.handle.net/10962/120569 , vital:34908 , Cory Library for Humanities Research, Rhodes University Library, Grahamstown, South Africa , T654_1
- Description: Map 1 in the map album accompanying the thesis by Hilstan Lett Watts, "Grahamstown : a socio-ecological study of a small South African town", Rhodes University thesis, 1957. Map signed 1955. This map is based on a municipal map, with necessary corrections. Street widths are exaggerated for the purpose of clarity. The street pattern shown is for the town in 1951. The so-called "Hottentot Village" is today the Coloured location.
- Full Text: false
- Date Issued: 1957