Livelihood benefits and costs from an invasive alien tree (Acacia dealbata) to rural communities in the Eastern Cape, South Africa
- Ngorima, A, Shackleton, Charlie M
- Authors: Ngorima, A , Shackleton, Charlie M
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/179755 , vital:43168 , xlink:href="https://doi.org/10.1016/j.jenvman.2018.05.077"
- Description: The negative effects of invasive alien species (IAS) are increasingly invoked to justify widespread and usually top-down approaches for their management or eradication. However, very little of the research or discourse is based on investigating local perceptions, uses and struggles with IAS, and how their presence influences and changes local livelihoods. The objective of this study was to assess the perceptions and livelihood uses of Acacia dealbata by local communities at three localities in the montane grasslands of the Eastern Cape, South Africa, using a combination of random household interviews, focus group discussions and participatory tools. We calculated direct-use values for each product and household (based on quantity used and local prices) and disaggregated these by gender of the household head and wealth quartiles. The results revealed the dualistic role of A. dealbata in local livelihoods. On the one hand, A. dealbata was widely used for firewood (100% of households), tools (77%) and construction timber (73%), with limited use for traditional medicines and forage. The cumulative value of approximately ZAR 2870 (±US$224) per household per year (across all households) represents considerable cash saving to households, most of whom are quite poor by national and international measures. On the other hand, the increasing extent of A. dealbata (93% said it was increasing) exacerbates local household vulnerability though reported reductions in cultivated areas, crop yields and forage production, and allegedly higher risks of crime. This quandary is well encapsulated by the considerable majority of respondents (84%) not wanting higher extents and densities of A. dealbata, but an equally high majority not wanting its total removal from local landscapes. Most respondents disliked A. dealbata in fields, close to homesteads or along primary access routes, and were more tolerant of it away from such sites. Institutional and use dynamics have varied over several decades in response to the changing extent and densities of A. dealbata and the broader political and socio-economic contexts. These results indicate that greater efforts are required to understand perceptions and uses of IAS by the people who live with them, and to direct such understanding into more spatially and temporally contextualised response strategies where required.
- Full Text:
- Date Issued: 2019
- Authors: Ngorima, A , Shackleton, Charlie M
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/179755 , vital:43168 , xlink:href="https://doi.org/10.1016/j.jenvman.2018.05.077"
- Description: The negative effects of invasive alien species (IAS) are increasingly invoked to justify widespread and usually top-down approaches for their management or eradication. However, very little of the research or discourse is based on investigating local perceptions, uses and struggles with IAS, and how their presence influences and changes local livelihoods. The objective of this study was to assess the perceptions and livelihood uses of Acacia dealbata by local communities at three localities in the montane grasslands of the Eastern Cape, South Africa, using a combination of random household interviews, focus group discussions and participatory tools. We calculated direct-use values for each product and household (based on quantity used and local prices) and disaggregated these by gender of the household head and wealth quartiles. The results revealed the dualistic role of A. dealbata in local livelihoods. On the one hand, A. dealbata was widely used for firewood (100% of households), tools (77%) and construction timber (73%), with limited use for traditional medicines and forage. The cumulative value of approximately ZAR 2870 (±US$224) per household per year (across all households) represents considerable cash saving to households, most of whom are quite poor by national and international measures. On the other hand, the increasing extent of A. dealbata (93% said it was increasing) exacerbates local household vulnerability though reported reductions in cultivated areas, crop yields and forage production, and allegedly higher risks of crime. This quandary is well encapsulated by the considerable majority of respondents (84%) not wanting higher extents and densities of A. dealbata, but an equally high majority not wanting its total removal from local landscapes. Most respondents disliked A. dealbata in fields, close to homesteads or along primary access routes, and were more tolerant of it away from such sites. Institutional and use dynamics have varied over several decades in response to the changing extent and densities of A. dealbata and the broader political and socio-economic contexts. These results indicate that greater efforts are required to understand perceptions and uses of IAS by the people who live with them, and to direct such understanding into more spatially and temporally contextualised response strategies where required.
- Full Text:
- Date Issued: 2019
Magnetic nanoparticle-indium phthalocyanine conjugate embedded in electrospun fiber for photodynamic antimicrobial chemotherapy and photodegradation of methyl red
- Sindelo, Azole, Nyokong, Tebello
- Authors: Sindelo, Azole , Nyokong, Tebello
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/186857 , vital:44540 , xlink:href="https://doi.org/10.1016/j.heliyon.2019.e02352"
- Description: ClIn(III) octacarboxy phthalocyanine (ClInOCPc) when alone or conjugated to magnetic nanoparticles (MNPClInOCPc) was employed for both photodynamic antimicrobial chemotherapy of an unknown water sample and Staphylococcus aureus, and for photo-degradation of methyl red (MR). The singlet oxygen quantum yields (ΦΔ) in water using ClInOCPc and MNP-ClInOCPc embedded in polyacrylonitrile (PAN) electrospun fibers were 0.36 and 0.22, respectively. When in solution, MNP-ClInOCPc gave 90.6% photoinactivation of microbes in a water sample from the stream and of ClInOCPc resulted in 84.8 % photoinactivation. When embedded to the polymer, there was 48.0% clearance for ClInOCPc and 63.7% clearance for MNP-ClInOCPc for the microbes in the water sample from the stream. For the photo-degradation of MR, the rate of degradation increased with decrease of the MR concentration with the MNP-ClInOCPc having the fastest rate.
- Full Text:
- Date Issued: 2019
- Authors: Sindelo, Azole , Nyokong, Tebello
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/186857 , vital:44540 , xlink:href="https://doi.org/10.1016/j.heliyon.2019.e02352"
- Description: ClIn(III) octacarboxy phthalocyanine (ClInOCPc) when alone or conjugated to magnetic nanoparticles (MNPClInOCPc) was employed for both photodynamic antimicrobial chemotherapy of an unknown water sample and Staphylococcus aureus, and for photo-degradation of methyl red (MR). The singlet oxygen quantum yields (ΦΔ) in water using ClInOCPc and MNP-ClInOCPc embedded in polyacrylonitrile (PAN) electrospun fibers were 0.36 and 0.22, respectively. When in solution, MNP-ClInOCPc gave 90.6% photoinactivation of microbes in a water sample from the stream and of ClInOCPc resulted in 84.8 % photoinactivation. When embedded to the polymer, there was 48.0% clearance for ClInOCPc and 63.7% clearance for MNP-ClInOCPc for the microbes in the water sample from the stream. For the photo-degradation of MR, the rate of degradation increased with decrease of the MR concentration with the MNP-ClInOCPc having the fastest rate.
- Full Text:
- Date Issued: 2019
Mainstreaming education for sustainable development: Elaborating the role of position-practice systems using seven laminations of scale
- Agbedahin, Adesuwa V, Lotz-Sisitka, Heila
- Authors: Agbedahin, Adesuwa V , Lotz-Sisitka, Heila
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/182428 , vital:43829 , xlink:href="https://doi.org/10.1080/14767430.2019.1602975"
- Description: The United Nations Sustainable Development Goal 4.7 proposes that Education for Sustainable Development (ESD) should be included at all levels of education, known as ‘mainstreaming’. However, there is little guidance as to how to achieve this. ESD mainstreaming demands more than simply a technical policy transfer; it also requires attention to the position-practice systems of involved agents. This article critically assesses the mainstreaming of ESD in the case of university educators in Africa who have participated in the International Training Programme on ESD in higher education. It clarifies their position-practice systems in terms of Bhaskar’s seven laminations of scale. This article therefore provides a detailed description of the ways in which agents' position-practice systems enable and constrain ESD mainstreaming. It also demonstrates that a critical realist perspective can contribute towards the understanding and achievement of transformation towards sustainability and can help to ensure the flourishing of both current and future generations.
- Full Text:
- Date Issued: 2019
- Authors: Agbedahin, Adesuwa V , Lotz-Sisitka, Heila
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/182428 , vital:43829 , xlink:href="https://doi.org/10.1080/14767430.2019.1602975"
- Description: The United Nations Sustainable Development Goal 4.7 proposes that Education for Sustainable Development (ESD) should be included at all levels of education, known as ‘mainstreaming’. However, there is little guidance as to how to achieve this. ESD mainstreaming demands more than simply a technical policy transfer; it also requires attention to the position-practice systems of involved agents. This article critically assesses the mainstreaming of ESD in the case of university educators in Africa who have participated in the International Training Programme on ESD in higher education. It clarifies their position-practice systems in terms of Bhaskar’s seven laminations of scale. This article therefore provides a detailed description of the ways in which agents' position-practice systems enable and constrain ESD mainstreaming. It also demonstrates that a critical realist perspective can contribute towards the understanding and achievement of transformation towards sustainability and can help to ensure the flourishing of both current and future generations.
- Full Text:
- Date Issued: 2019
Making (non) sense of urban water flows: Qualities and processes for transformative and transgressive learning moments
- Authors: James, Anna
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/390665 , vital:68572 , xlink:href="https://doi.org/10.3390/su11236817"
- Description: Urban sustainability and justice depend upon the flow of water across complex urban space. Yet, the characteristics of urban space produce a fragmented sense of our water resources. Cape Town, South Africa, the context of this research, is one such city whose water challenges have been exacerbated by climate change-induced drought, to the extent that the city nearly shut off the water running to residents’ taps. This context presents a particular challenge for the focus of this special issue, transformative and transgressive learning, an emerging arena of thought and practice concerned with learning processes that might foster more sustainable socio-ecological relations. The empirical material for this research draws from 12 arts-based inquiry workshops run with youth in an environmental organisation over four months, exploring a local water crisis. The data were generated through an engaged arts-based research process. The paper traces how transformative and transgressive learning in the context of urban water crisis might be characterised as making (non)sense by bringing the empirical material into dialogue with five entry points of transformative and transgressive learning literature rooted in Freirean educational praxis. This paper crafts and engages the concept of making (non)sense, a way of thinking about qualities and processes of learning praxis that responds to the wicked sustainability challenges we face today, particularly in terms of a Global South perspective. I argue such a praxis needs qualities and processes that disrupt and trouble the norm in the context of the socio-ecological challenge of urban water.
- Full Text:
- Date Issued: 2019
- Authors: James, Anna
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/390665 , vital:68572 , xlink:href="https://doi.org/10.3390/su11236817"
- Description: Urban sustainability and justice depend upon the flow of water across complex urban space. Yet, the characteristics of urban space produce a fragmented sense of our water resources. Cape Town, South Africa, the context of this research, is one such city whose water challenges have been exacerbated by climate change-induced drought, to the extent that the city nearly shut off the water running to residents’ taps. This context presents a particular challenge for the focus of this special issue, transformative and transgressive learning, an emerging arena of thought and practice concerned with learning processes that might foster more sustainable socio-ecological relations. The empirical material for this research draws from 12 arts-based inquiry workshops run with youth in an environmental organisation over four months, exploring a local water crisis. The data were generated through an engaged arts-based research process. The paper traces how transformative and transgressive learning in the context of urban water crisis might be characterised as making (non)sense by bringing the empirical material into dialogue with five entry points of transformative and transgressive learning literature rooted in Freirean educational praxis. This paper crafts and engages the concept of making (non)sense, a way of thinking about qualities and processes of learning praxis that responds to the wicked sustainability challenges we face today, particularly in terms of a Global South perspective. I argue such a praxis needs qualities and processes that disrupt and trouble the norm in the context of the socio-ecological challenge of urban water.
- Full Text:
- Date Issued: 2019
Management Capacity within Small to Medium Tourism Enterprises (SMTEs) in the Eastern Cape Province
- Mxunyelwa, Siyabonga, Lloyd, Hendrik
- Authors: Mxunyelwa, Siyabonga , Lloyd, Hendrik
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/11260/1962 , vital:39807 , https://www.ajhtl.com/uploads/7/1/6/3/7163688/article_49_vol_8_4__2019_wsu.pdf
- Description: The small to medium tourism enterprises (SMTEs) are recognised as significant contributors to the development of the local and regional economies and create much needed entrepreneurial ventures. Universally, SMTEs play a significant role in the tourism sector. Management of these enterprises by owners and managers seems to face challenges. This paper examines the factors impacting on management capacity with specific focus on the SMTEs in the Eastern Cape Province, South Africa. A systematic random sampling technique was utilised to choose a sample of 320 business respondents from the 2012 database of the Eastern Cape Parks and Tourism Agency, comprising of formally registered small tourism businesses. A total of 310 usable questionnaires was finally obtained. In this study descriptive and inferential statistics were applied. Descriptive statistics were captured to highlight the owners’ characteristics and to consolidate their measurement scores. Utilising inferential statistics, the study undertook an investigation into relationships between demographic variables, business characteristics and factors impacting on management capacity within SMTEs were undertaken. The paper elucidates that a significant relationship was found between business characteristics and demographic variables. Furthermore, skills development, strategic and management knowledge and business leadership factors were compared with the qualifications group. This study adds to the body of knowledge in a predominantly less researched phenomenon of management capacity within SMTEs.
- Full Text:
- Date Issued: 2019
- Authors: Mxunyelwa, Siyabonga , Lloyd, Hendrik
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/11260/1962 , vital:39807 , https://www.ajhtl.com/uploads/7/1/6/3/7163688/article_49_vol_8_4__2019_wsu.pdf
- Description: The small to medium tourism enterprises (SMTEs) are recognised as significant contributors to the development of the local and regional economies and create much needed entrepreneurial ventures. Universally, SMTEs play a significant role in the tourism sector. Management of these enterprises by owners and managers seems to face challenges. This paper examines the factors impacting on management capacity with specific focus on the SMTEs in the Eastern Cape Province, South Africa. A systematic random sampling technique was utilised to choose a sample of 320 business respondents from the 2012 database of the Eastern Cape Parks and Tourism Agency, comprising of formally registered small tourism businesses. A total of 310 usable questionnaires was finally obtained. In this study descriptive and inferential statistics were applied. Descriptive statistics were captured to highlight the owners’ characteristics and to consolidate their measurement scores. Utilising inferential statistics, the study undertook an investigation into relationships between demographic variables, business characteristics and factors impacting on management capacity within SMTEs were undertaken. The paper elucidates that a significant relationship was found between business characteristics and demographic variables. Furthermore, skills development, strategic and management knowledge and business leadership factors were compared with the qualifications group. This study adds to the body of knowledge in a predominantly less researched phenomenon of management capacity within SMTEs.
- Full Text:
- Date Issued: 2019
Masked in metaphors: counter narratives in the works of Nigerian cartoonist Mike Asukwo
- Authors: Jimoh, Ganiyu A
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/145974 , vital:38483 , https://0-doi.org.wam.seals.ac.za/10.1162/afar_a_00458
- Description: At the time of independence, most African countries were poised to take charge of their own affairs. However, postcolonial realities characterized by political upheavals, coups and counter-coups, civil wars, and economic downturn, among other setbacks, created a sense of ambivalence in terms of political and economic freedom. In Nigeria, satirical expressions became the tool used against oppressive regimes. In post-independence Nigeria, from the military dictatorial era to the present civilian dispensations,1 sociopolitical issues have been lampooned in different forms of expression such as music, performance, cartoons, and memes. Within this environment, political cartoons began to thrive, as they became a relatively safe way to comment on the political issues of the day (Akande 2002: 2). This was achieved largely by concealing the main subject matter behind the “masks” of metaphoric imagery, which enabled cartoonists to develop narratives that counter the dominant narratives, often opposing governmental policies and practices.
- Full Text:
- Date Issued: 2019
- Authors: Jimoh, Ganiyu A
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/145974 , vital:38483 , https://0-doi.org.wam.seals.ac.za/10.1162/afar_a_00458
- Description: At the time of independence, most African countries were poised to take charge of their own affairs. However, postcolonial realities characterized by political upheavals, coups and counter-coups, civil wars, and economic downturn, among other setbacks, created a sense of ambivalence in terms of political and economic freedom. In Nigeria, satirical expressions became the tool used against oppressive regimes. In post-independence Nigeria, from the military dictatorial era to the present civilian dispensations,1 sociopolitical issues have been lampooned in different forms of expression such as music, performance, cartoons, and memes. Within this environment, political cartoons began to thrive, as they became a relatively safe way to comment on the political issues of the day (Akande 2002: 2). This was achieved largely by concealing the main subject matter behind the “masks” of metaphoric imagery, which enabled cartoonists to develop narratives that counter the dominant narratives, often opposing governmental policies and practices.
- Full Text:
- Date Issued: 2019
Mating preferences of two species of Eccritotarsus (Hemiptera: Miridae)
- Authors: Mnuguni, Sandiso
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/417486 , vital:71457 , xlink:href="https://hdl.handle.net/10520/ejc-cristal-v10-n1-a7"
- Description: Eccritotarsus spp. are biological control agents that have been sourced from Brazil and Peru to control water hyacinth in South Africa. These agents have been released in over 30 sites and were thought to be the same species. The sequencing of mitochondrial DNA and interbreeding experiments have since confirmed the cryptic species to be separate species. The Brazilian population remains E. catarinensis while the Peruvian population is now E. eichhorniae. This paper assessed the mating behaviour of both species, to investigate behavioural traits that have resulted in reproductive isolation, which could have led to speciation. Mating choices in a form of no-choice, bi-choice and multi-choice tests were conducted within and between species in a 3:1, 2:1 and 1:1 sex ratio. The E. eichhorniae pair had more single and multiple copula incidences, higher average total copula duration and higher copula latency while the E.catarinensis♀×E.eichhorniae♂ pair had less single and multiple copula incidences, lower average total copula duration and lower copula latency. When the E.eichhorniae♀ and E.catarinensis♂ were given their respective choices, they only mated with conspecifics. However, when E.eichhorniae♀ are crossed with E.catarinensis♂ they do not produce offspring. These results suggest that interbreeding will be limited in South Africa.
- Full Text:
- Date Issued: 2019
- Authors: Mnuguni, Sandiso
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/417486 , vital:71457 , xlink:href="https://hdl.handle.net/10520/ejc-cristal-v10-n1-a7"
- Description: Eccritotarsus spp. are biological control agents that have been sourced from Brazil and Peru to control water hyacinth in South Africa. These agents have been released in over 30 sites and were thought to be the same species. The sequencing of mitochondrial DNA and interbreeding experiments have since confirmed the cryptic species to be separate species. The Brazilian population remains E. catarinensis while the Peruvian population is now E. eichhorniae. This paper assessed the mating behaviour of both species, to investigate behavioural traits that have resulted in reproductive isolation, which could have led to speciation. Mating choices in a form of no-choice, bi-choice and multi-choice tests were conducted within and between species in a 3:1, 2:1 and 1:1 sex ratio. The E. eichhorniae pair had more single and multiple copula incidences, higher average total copula duration and higher copula latency while the E.catarinensis♀×E.eichhorniae♂ pair had less single and multiple copula incidences, lower average total copula duration and lower copula latency. When the E.eichhorniae♀ and E.catarinensis♂ were given their respective choices, they only mated with conspecifics. However, when E.eichhorniae♀ are crossed with E.catarinensis♂ they do not produce offspring. These results suggest that interbreeding will be limited in South Africa.
- Full Text:
- Date Issued: 2019
Mechanism of action of non-synonymous single nucleotide variations associated with α-carbonic anhydrase II deficiency:
- Sanyanga, Taremekedzwa A, Nizami, Bilal, Tastan Bishop, Özlem
- Authors: Sanyanga, Taremekedzwa A , Nizami, Bilal , Tastan Bishop, Özlem
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/162655 , vital:40970 , https://doi.org/10.3390/molecules24213987
- Description: Human carbonic anhydrase II (CA-II) is a Zinc (Zn 2+ ) metalloenzyme responsible for maintenance of acid-base balance within the body through the reversible hydration of CO 2 to produce protons (H + ) and bicarbonate (BCT). Due to its importance, alterations to the amino acid sequence of the protein as a result of single nucleotide variations (nsSNVs) have detrimental effects on homeostasis. Six pathogenic CA-II nsSNVs, K18E, K18Q, H107Y, P236H, P236R and N252D were identified, and variant protein models calculated using homology modeling. The effect of each nsSNV was analyzed using motif analysis, molecular dynamics (MD) simulations, principal component (PCA) and dynamic residue network (DRN) analysis. Motif analysis identified 11 functionally important motifs in CA-II.
- Full Text:
- Date Issued: 2019
- Authors: Sanyanga, Taremekedzwa A , Nizami, Bilal , Tastan Bishop, Özlem
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/162655 , vital:40970 , https://doi.org/10.3390/molecules24213987
- Description: Human carbonic anhydrase II (CA-II) is a Zinc (Zn 2+ ) metalloenzyme responsible for maintenance of acid-base balance within the body through the reversible hydration of CO 2 to produce protons (H + ) and bicarbonate (BCT). Due to its importance, alterations to the amino acid sequence of the protein as a result of single nucleotide variations (nsSNVs) have detrimental effects on homeostasis. Six pathogenic CA-II nsSNVs, K18E, K18Q, H107Y, P236H, P236R and N252D were identified, and variant protein models calculated using homology modeling. The effect of each nsSNV was analyzed using motif analysis, molecular dynamics (MD) simulations, principal component (PCA) and dynamic residue network (DRN) analysis. Motif analysis identified 11 functionally important motifs in CA-II.
- Full Text:
- Date Issued: 2019
Methodological Survey of Simplified TD-DFT Methods for Fast and Accurate Interpretation of UV−Vis−NIR Spectra of Phthalocyanines
- Martynov, Alexander G, Mack, John, May, Aviwe K, Nyokong, Tebello, Gorbunova, Yulia G, Tsivadze, Aslan Yu
- Authors: Martynov, Alexander G , Mack, John , May, Aviwe K , Nyokong, Tebello , Gorbunova, Yulia G , Tsivadze, Aslan Yu
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/186915 , vital:44547 , xlink:href="https://doi.org/10.1021/acsomega.8b03500"
- Description: A methodological survey of density functional theory (DFT) methods for the prediction of UV−visible (vis)−near-infrared (NIR) spectra of phthalocyanines is reported. Four methods, namely, full time-dependent (TD)-DFT and its Tamm−Dancoff approximation (TDA), together with their simplified modifications (sTD-DFT and sTDA, respectively), were tested by using the examples of unsubstituted and alkoxy-substituted metal-free ligands and zinc complexes. The theoretical results were compared with experimental data derived from UV−visible absorption and magnetic circular dichroism spectroscopy. Seven popular exchange-correlation functionals (BP86, B3LYP, TPSSh, M06, CAM-B3LYP, LC-BLYP, and ωB97X) were tested within these four approaches starting at a relatively modest level using 6-31G(d) basis sets and gas-phase BP86/def2-SVP optimized geometries. A gradual augmentation of the computational levels was used to identify the influence of starting geometry, solvation effects, and basis sets on the results of TD-DFT and sTD-DFT calculations. It was found that although these factors do influence the predicted energies of the vertical excitations, they do not affect the trends predicted in the spectral properties across series of structurally related substituted free bases and metallophthalocyanines. The best accuracy for the gas-phase vertical excitations was observed in the lower-energy Q-band region for calculations that made use of range-separated hybrids for both full and simplified TD-DFT approaches. The CAMB3LYP functional provided particularly accurate results in the context of the sTD-DFT approach. The description of the higherenergy B-band region is considerably less accurate, and this demonstrates the need for further advances in the accuracy of theoretical calculations. Together with a general increase in accuracy, the application of simplified TD-DFT methods affords a 2−3 orders of magnitude speedup of the calculations in comparison to the full TD-DFT approach. It is anticipated that this approach will be widely used on desktop computers during the interpretation of UV−vis−NIR spectra of phthalocyanines and related macrocycles in the years ahead.
- Full Text:
- Date Issued: 2019
- Authors: Martynov, Alexander G , Mack, John , May, Aviwe K , Nyokong, Tebello , Gorbunova, Yulia G , Tsivadze, Aslan Yu
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/186915 , vital:44547 , xlink:href="https://doi.org/10.1021/acsomega.8b03500"
- Description: A methodological survey of density functional theory (DFT) methods for the prediction of UV−visible (vis)−near-infrared (NIR) spectra of phthalocyanines is reported. Four methods, namely, full time-dependent (TD)-DFT and its Tamm−Dancoff approximation (TDA), together with their simplified modifications (sTD-DFT and sTDA, respectively), were tested by using the examples of unsubstituted and alkoxy-substituted metal-free ligands and zinc complexes. The theoretical results were compared with experimental data derived from UV−visible absorption and magnetic circular dichroism spectroscopy. Seven popular exchange-correlation functionals (BP86, B3LYP, TPSSh, M06, CAM-B3LYP, LC-BLYP, and ωB97X) were tested within these four approaches starting at a relatively modest level using 6-31G(d) basis sets and gas-phase BP86/def2-SVP optimized geometries. A gradual augmentation of the computational levels was used to identify the influence of starting geometry, solvation effects, and basis sets on the results of TD-DFT and sTD-DFT calculations. It was found that although these factors do influence the predicted energies of the vertical excitations, they do not affect the trends predicted in the spectral properties across series of structurally related substituted free bases and metallophthalocyanines. The best accuracy for the gas-phase vertical excitations was observed in the lower-energy Q-band region for calculations that made use of range-separated hybrids for both full and simplified TD-DFT approaches. The CAMB3LYP functional provided particularly accurate results in the context of the sTD-DFT approach. The description of the higherenergy B-band region is considerably less accurate, and this demonstrates the need for further advances in the accuracy of theoretical calculations. Together with a general increase in accuracy, the application of simplified TD-DFT methods affords a 2−3 orders of magnitude speedup of the calculations in comparison to the full TD-DFT approach. It is anticipated that this approach will be widely used on desktop computers during the interpretation of UV−vis−NIR spectra of phthalocyanines and related macrocycles in the years ahead.
- Full Text:
- Date Issued: 2019
Methods for understanding social-ecological systems: a review of place-based studies
- de Vos, Alta, Biggs, Reinette, Preiser, Rika
- Authors: de Vos, Alta , Biggs, Reinette , Preiser, Rika
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/415909 , vital:71299 , xlink:href="https://doi.org/10.5751/ES-11236-240416"
- Description: In recent years, social-ecological systems (SES) have emerged as a prominent analytical framing with which to investigate pressing sustainability issues associated with the Anthropocene era. Despite the growth of SES research, the lack of a delineated set of methods commonly contributes to disorientation for those entering into a field where methodological pluralism is the norm. We conduct a review of SES research, focusing particularly on methods used in this field. Our results reflect the rapid growth in SES research relative to other publications in relevant subject areas, and suggest a maturation of the field. Whilst institutions investigating SES have been mostly based in the global north, focal SES has been more globally distributed, although key regions, especially island regions, remain poorly studied. Key problems addressed in the studies related to policy, trade, conservation, adaptation, land use change, water, forests, sustainability, urban problems, and governance and institutions. We identified 311 methods, which we grouped into 27 method categories that can serve as a guide to SES research methods for newcomers to the field. We also performed an exploratory assessment of the ability of these methods to account for key features of SES as complex adaptive systems. We found that methods do better at accounting for the relational and context-dependent nature of SES, and least well with complex causality. Our study highlights the plurality of methods used in SES research, and helps highlight key areas in need of further methodological development.
- Full Text:
- Date Issued: 2019
- Authors: de Vos, Alta , Biggs, Reinette , Preiser, Rika
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/415909 , vital:71299 , xlink:href="https://doi.org/10.5751/ES-11236-240416"
- Description: In recent years, social-ecological systems (SES) have emerged as a prominent analytical framing with which to investigate pressing sustainability issues associated with the Anthropocene era. Despite the growth of SES research, the lack of a delineated set of methods commonly contributes to disorientation for those entering into a field where methodological pluralism is the norm. We conduct a review of SES research, focusing particularly on methods used in this field. Our results reflect the rapid growth in SES research relative to other publications in relevant subject areas, and suggest a maturation of the field. Whilst institutions investigating SES have been mostly based in the global north, focal SES has been more globally distributed, although key regions, especially island regions, remain poorly studied. Key problems addressed in the studies related to policy, trade, conservation, adaptation, land use change, water, forests, sustainability, urban problems, and governance and institutions. We identified 311 methods, which we grouped into 27 method categories that can serve as a guide to SES research methods for newcomers to the field. We also performed an exploratory assessment of the ability of these methods to account for key features of SES as complex adaptive systems. We found that methods do better at accounting for the relational and context-dependent nature of SES, and least well with complex causality. Our study highlights the plurality of methods used in SES research, and helps highlight key areas in need of further methodological development.
- Full Text:
- Date Issued: 2019
Molecular Networking Reveals Two Distinct Chemotypes in Pyrroloiminoquinone-Producing Tsitsikamma favus Sponges
- Kalinski, Jarmo-Charles J, Waterworth, Samantha C, Noundou, Xavier S, Jiwaji, Meesbah, Parker-Nance, Shirley, Krause, Rui W M, McPhail, Kerry L, Dorrington, Rosemary A
- Authors: Kalinski, Jarmo-Charles J , Waterworth, Samantha C , Noundou, Xavier S , Jiwaji, Meesbah , Parker-Nance, Shirley , Krause, Rui W M , McPhail, Kerry L , Dorrington, Rosemary A
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/131618 , vital:36673 , https://doi.org/10.3390/md17010060
- Description: The temperate marine sponge, Tsitsikamma favus, produces pyrroloiminoquinone alkaloids with potential as anticancer drug leads. We profiled the secondary metabolite reservoir of T. favus sponges using HR-ESI-LC-MS/MS-based molecular networking analysis followed by preparative purification efforts to map the diversity of new and known pyrroloiminoquinones and related compounds in extracts of seven specimens. Molecular taxonomic identification confirmed all sponges as T. favus and five specimens (chemotype I) were found to produce mainly discorhabdins and tsitsikammamines. Remarkably, however, two specimens (chemotype II) exhibited distinct morphological and chemical characteristics: the absence of discorhabdins, only trace levels of tsitsikammamines and, instead, an abundance of unbranched and halogenated makaluvamines. Targeted chromatographic isolation provided the new makaluvamine Q, the known makaluvamines A and I, tsitsikammamine B, 14-bromo-7,8-dehydro-3-dihydro-discorhabdin C, and the related pyrrolo-ortho-quinones makaluvamine O and makaluvone. Purified compounds displayed different activity profiles in assays for topoisomerase I inhibition, DNA intercalation and antimetabolic activity against human cell lines. This is the first report of makaluvamines from a Tsitsikamma sponge species, and the first description of distinct chemotypes within a species of the Latrunculiidae family. This study sheds new light on the putative pyrroloiminoquinone biosynthetic pathway of latrunculid sponges
- Full Text:
- Date Issued: 2019
- Authors: Kalinski, Jarmo-Charles J , Waterworth, Samantha C , Noundou, Xavier S , Jiwaji, Meesbah , Parker-Nance, Shirley , Krause, Rui W M , McPhail, Kerry L , Dorrington, Rosemary A
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/131618 , vital:36673 , https://doi.org/10.3390/md17010060
- Description: The temperate marine sponge, Tsitsikamma favus, produces pyrroloiminoquinone alkaloids with potential as anticancer drug leads. We profiled the secondary metabolite reservoir of T. favus sponges using HR-ESI-LC-MS/MS-based molecular networking analysis followed by preparative purification efforts to map the diversity of new and known pyrroloiminoquinones and related compounds in extracts of seven specimens. Molecular taxonomic identification confirmed all sponges as T. favus and five specimens (chemotype I) were found to produce mainly discorhabdins and tsitsikammamines. Remarkably, however, two specimens (chemotype II) exhibited distinct morphological and chemical characteristics: the absence of discorhabdins, only trace levels of tsitsikammamines and, instead, an abundance of unbranched and halogenated makaluvamines. Targeted chromatographic isolation provided the new makaluvamine Q, the known makaluvamines A and I, tsitsikammamine B, 14-bromo-7,8-dehydro-3-dihydro-discorhabdin C, and the related pyrrolo-ortho-quinones makaluvamine O and makaluvone. Purified compounds displayed different activity profiles in assays for topoisomerase I inhibition, DNA intercalation and antimetabolic activity against human cell lines. This is the first report of makaluvamines from a Tsitsikamma sponge species, and the first description of distinct chemotypes within a species of the Latrunculiidae family. This study sheds new light on the putative pyrroloiminoquinone biosynthetic pathway of latrunculid sponges
- Full Text:
- Date Issued: 2019
Molecular phylogeny of Chondrocyclus (Gastropoda: Cyclophoridae), a widespread genus of sedentary, restricted-range snails:
- Cole, Mary L, Raheem, Dinarzarde C, Villet, Martin H
- Authors: Cole, Mary L , Raheem, Dinarzarde C , Villet, Martin H
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/140761 , vital:37916 , DOI: 10.1016/j.ympev.2018.09.018
- Description: The genus Chondrocyclus Ancey, 1898 contains the majority of southern African members of the Cyclophoridae, a large family of operculate land snails. We present the first molecular phylogeny of the genus based on two mitochondrial genes (16S and CO1) and complement this with an appraisal of morphological characters relating to the shell and soft parts. Worn shells on which some descriptions and records of different species were based appear to be indistinguishable morphologically, creating taxonomic confusion. We show that Chondrocyclus s.l. underwent two major radiations, one Afromontane and the other largely coastal.
- Full Text:
- Date Issued: 2019
- Authors: Cole, Mary L , Raheem, Dinarzarde C , Villet, Martin H
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/140761 , vital:37916 , DOI: 10.1016/j.ympev.2018.09.018
- Description: The genus Chondrocyclus Ancey, 1898 contains the majority of southern African members of the Cyclophoridae, a large family of operculate land snails. We present the first molecular phylogeny of the genus based on two mitochondrial genes (16S and CO1) and complement this with an appraisal of morphological characters relating to the shell and soft parts. Worn shells on which some descriptions and records of different species were based appear to be indistinguishable morphologically, creating taxonomic confusion. We show that Chondrocyclus s.l. underwent two major radiations, one Afromontane and the other largely coastal.
- Full Text:
- Date Issued: 2019
Morphological identification of fungi associated with Eichhornia crassipes (Mart.-Solms) Laubach in the Wouri River Basin, Douala, Cameroon
- Voukeng, Kenfack S N, Coombes, Candice A, Weyl, Philip S, Djeugoue, F, Hill, Martin P
- Authors: Voukeng, Kenfack S N , Coombes, Candice A , Weyl, Philip S , Djeugoue, F , Hill, Martin P
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/423785 , vital:72093 , xlink:href="https://doi.org/10.2989/16085914.2019.1636760"
- Description: In many parts of the world, excess growth of Eichhornia crassipes (Pontederiaceae) poses a serious threat to aquatic environments. In Cameroon, where manual clearing is still undertaken, little is known about fungal diversity associated with the plant, or its potential for biological control. Surveys of the Wouri River Basin in the Littoral Region of Cameroon were conducted during a rainy season (May–October 2014) and a dry season (November 2015–April 2016) at various sites, to identify fungi associated with water hyacinth. Fungi were isolated and identified from symptomatic plant parts collected. In the rainy season, 130 fungal isolates belonging to 12 genera were identified morphologically, whereas 299 isolates belonging to 23 genera were identified during the dry season. With the exception of Fusarium oxysporum and Phytophthora sp., the genera represented new records for Cameroon, and Chaetomium strumarium, Colletotrichum gloesporioides, C. acutatum, C. dematium, Curvularia pallescens and Pytomyces chartarum were considered new host records for E. crassipes in Africa. Isolates of Acremonium zonatum, Chaetomium strumarium, Alternaria eichhorniae, Phytophthora sp. and Rhizoctonia sp. showed the highest frequency of occurrence on E. crassipes in the Wouri River Basin and, given their record as plant pathogens, could be potentially useful in the development of mycoherbicides for this weed in Cameroon.
- Full Text:
- Date Issued: 2019
- Authors: Voukeng, Kenfack S N , Coombes, Candice A , Weyl, Philip S , Djeugoue, F , Hill, Martin P
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/423785 , vital:72093 , xlink:href="https://doi.org/10.2989/16085914.2019.1636760"
- Description: In many parts of the world, excess growth of Eichhornia crassipes (Pontederiaceae) poses a serious threat to aquatic environments. In Cameroon, where manual clearing is still undertaken, little is known about fungal diversity associated with the plant, or its potential for biological control. Surveys of the Wouri River Basin in the Littoral Region of Cameroon were conducted during a rainy season (May–October 2014) and a dry season (November 2015–April 2016) at various sites, to identify fungi associated with water hyacinth. Fungi were isolated and identified from symptomatic plant parts collected. In the rainy season, 130 fungal isolates belonging to 12 genera were identified morphologically, whereas 299 isolates belonging to 23 genera were identified during the dry season. With the exception of Fusarium oxysporum and Phytophthora sp., the genera represented new records for Cameroon, and Chaetomium strumarium, Colletotrichum gloesporioides, C. acutatum, C. dematium, Curvularia pallescens and Pytomyces chartarum were considered new host records for E. crassipes in Africa. Isolates of Acremonium zonatum, Chaetomium strumarium, Alternaria eichhorniae, Phytophthora sp. and Rhizoctonia sp. showed the highest frequency of occurrence on E. crassipes in the Wouri River Basin and, given their record as plant pathogens, could be potentially useful in the development of mycoherbicides for this weed in Cameroon.
- Full Text:
- Date Issued: 2019
Morphological influence of deposition routes on lead sulfide thin films
- Mlowe, Sixberth, Shombe, Ginena B, Akerman, Matthew P, Mubofu, Egid B, O'Brien, Paul, Mashazi, Philani N, Nyokong, Tebello, Revaprasadu, Neerish
- Authors: Mlowe, Sixberth , Shombe, Ginena B , Akerman, Matthew P , Mubofu, Egid B , O'Brien, Paul , Mashazi, Philani N , Nyokong, Tebello , Revaprasadu, Neerish
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/186780 , vital:44533 , xlink:href="https://doi.org/10.1016/j.ica.2019.119116"
- Description: A distorted single crystal structure of bis(piperidinedithiocarbamato)lead(II) complex and its subsequent use to deposit thin films is reported. Two deposition routes namely, aerosol-assisted chemical vapour deposition (AACVD) and spin coating deposition have been employed to obtain anisotropic lead sulfide (PbS) nanostructures. The thin films displayed rod to cubic shaped crystals for AACVD, and a range of cubes, star and dendritic morphologies with variation of temperatures were displayed for spin coated films. Optical band gaps between 1.32 and 1.55 eV as controlled by the change in temperature were observed for thin films deposited by AACVD. Powder X-ray diffraction (P-XRD) studies show that the films formed are composed of cubic crystalline PbS. The X-ray photoelectron spectroscopy (XPS) was used to investigate the effect of activation temperatures (350, 400 and 450 °C) on the chemical composition and oxidation states of PbS samples.
- Full Text:
- Date Issued: 2019
- Authors: Mlowe, Sixberth , Shombe, Ginena B , Akerman, Matthew P , Mubofu, Egid B , O'Brien, Paul , Mashazi, Philani N , Nyokong, Tebello , Revaprasadu, Neerish
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/186780 , vital:44533 , xlink:href="https://doi.org/10.1016/j.ica.2019.119116"
- Description: A distorted single crystal structure of bis(piperidinedithiocarbamato)lead(II) complex and its subsequent use to deposit thin films is reported. Two deposition routes namely, aerosol-assisted chemical vapour deposition (AACVD) and spin coating deposition have been employed to obtain anisotropic lead sulfide (PbS) nanostructures. The thin films displayed rod to cubic shaped crystals for AACVD, and a range of cubes, star and dendritic morphologies with variation of temperatures were displayed for spin coated films. Optical band gaps between 1.32 and 1.55 eV as controlled by the change in temperature were observed for thin films deposited by AACVD. Powder X-ray diffraction (P-XRD) studies show that the films formed are composed of cubic crystalline PbS. The X-ray photoelectron spectroscopy (XPS) was used to investigate the effect of activation temperatures (350, 400 and 450 °C) on the chemical composition and oxidation states of PbS samples.
- Full Text:
- Date Issued: 2019
Movement and predation: a catch-and-release study on the acoustic tracking of bonefish in the Indian Ocean
- Moxham, Emily Jeanne, Cowley, Paul D, Bennett, Rhett H, von Brandis, Rainer G
- Authors: Moxham, Emily Jeanne , Cowley, Paul D , Bennett, Rhett H , von Brandis, Rainer G
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/103946 , vital:32325 , https://doi.org/10.1007/s10641-019-00850-1
- Description: Tourism generated through bonefish (Albula spp.) fishing contributes to the economies of many isolated tropical islands and atolls. However, little research has been conducted on bonefish in the Indian Ocean. This study aimed to contribute to the understanding of bonefish ecology in the Indian Ocean by quantifying the spatial and temporal movements of Albula glossodonta at a near-pristine and predator-rich atoll in the Seychelles; however, to achieve this, an analysis to identify the occurrence of possible post-release predation bias was first necessary. An acoustic telemetry study was initiated at the remote St. Joseph Atoll, within an array of 88 automated data-logging acoustic receivers. Thirty bonefish were surgically implanted with Vemco V13 acoustic transmitters and tracked for one year. Only 10% of the tagged bonefish were detected for longer than two weeks. A comparison of the final 100 h of movement data from fish detected for less than two weeks to the movement data of the fish detected for longer periods revealed distinct differences in area use and significant differences in the average daily distance moved, speed of movement and frequency of detections. This suggested that mortality in the form of post-release predation was at least 43% of tagged fish. The three surviving bonefish were tracked for 210 to 367 days. These individuals remained in the atoll and showed high use of the marginal habitats between the shallow sand flats and the lagoon. A generalised linear mixed model identified that water temperature, diel cycle and tide were significant predictors of bonefish presence in the lagoon. The high post-release mortality highlights that catch-and-release is likely not as benign as previously believed and management and policy should be adjusted accordingly.
- Full Text:
- Date Issued: 2019
- Authors: Moxham, Emily Jeanne , Cowley, Paul D , Bennett, Rhett H , von Brandis, Rainer G
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/103946 , vital:32325 , https://doi.org/10.1007/s10641-019-00850-1
- Description: Tourism generated through bonefish (Albula spp.) fishing contributes to the economies of many isolated tropical islands and atolls. However, little research has been conducted on bonefish in the Indian Ocean. This study aimed to contribute to the understanding of bonefish ecology in the Indian Ocean by quantifying the spatial and temporal movements of Albula glossodonta at a near-pristine and predator-rich atoll in the Seychelles; however, to achieve this, an analysis to identify the occurrence of possible post-release predation bias was first necessary. An acoustic telemetry study was initiated at the remote St. Joseph Atoll, within an array of 88 automated data-logging acoustic receivers. Thirty bonefish were surgically implanted with Vemco V13 acoustic transmitters and tracked for one year. Only 10% of the tagged bonefish were detected for longer than two weeks. A comparison of the final 100 h of movement data from fish detected for less than two weeks to the movement data of the fish detected for longer periods revealed distinct differences in area use and significant differences in the average daily distance moved, speed of movement and frequency of detections. This suggested that mortality in the form of post-release predation was at least 43% of tagged fish. The three surviving bonefish were tracked for 210 to 367 days. These individuals remained in the atoll and showed high use of the marginal habitats between the shallow sand flats and the lagoon. A generalised linear mixed model identified that water temperature, diel cycle and tide were significant predictors of bonefish presence in the lagoon. The high post-release mortality highlights that catch-and-release is likely not as benign as previously believed and management and policy should be adjusted accordingly.
- Full Text:
- Date Issued: 2019
Mulling over Art with Andrew Mulenga:
- Authors: Mulenga, Andrew
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/146815 , vital:38560 , https://www.themastonline.com/2019/06/18/mulling-over-art/
- Description: Life, which is the loosest translation of the Nyanja word “Umoyo”, an apt title for the ongoing exhibition that opened at the Henry Tayali Gallery last Friday has several visual morsels that are delightful to look at. The two-man show by schoolteachers based in the Eastern Province who are trying to break the mold from just being educators of art in their respective schools to wet their beaks in the contemporary art scene has several visual morsels that are delightful to look at.
- Full Text:
- Date Issued: 2019
- Authors: Mulenga, Andrew
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/146815 , vital:38560 , https://www.themastonline.com/2019/06/18/mulling-over-art/
- Description: Life, which is the loosest translation of the Nyanja word “Umoyo”, an apt title for the ongoing exhibition that opened at the Henry Tayali Gallery last Friday has several visual morsels that are delightful to look at. The two-man show by schoolteachers based in the Eastern Province who are trying to break the mold from just being educators of art in their respective schools to wet their beaks in the contemporary art scene has several visual morsels that are delightful to look at.
- Full Text:
- Date Issued: 2019
Mulling over Art with Andrew Mulenga: Artnet “Intelligence Report” magnifies African Art Market
- Authors: Mulenga, Andrew
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/146826 , vital:38561 , https://www.themastonline.com/2019/09/24/mulling-over-art-artnet-intelligence-report-magnifies-african-art-market/
- Description: In its latest “Intelligence Report” released on 10th September titled Welcome to the Age of the Art Industry (The Art World Is Over) which coincides with its 30th anniversary, artnet News advances a thesis: that over the past 30 years, the art world has evolved into an art industry.
- Full Text:
- Date Issued: 2019
- Authors: Mulenga, Andrew
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/146826 , vital:38561 , https://www.themastonline.com/2019/09/24/mulling-over-art-artnet-intelligence-report-magnifies-african-art-market/
- Description: In its latest “Intelligence Report” released on 10th September titled Welcome to the Age of the Art Industry (The Art World Is Over) which coincides with its 30th anniversary, artnet News advances a thesis: that over the past 30 years, the art world has evolved into an art industry.
- Full Text:
- Date Issued: 2019
Mulling over Art with Andrew Mulenga: Lechwe celebrates 2 Zambian art icons
- Authors: Mulenga, Andrew
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/146868 , vital:38565 , https://www.themastonline.com/2019/10/29/mulling-over-art-lechwe-celebrates-2-zambian-art-icons/
- Description: LESS than a year after its official opening, the Lechwe Trust Art Gallery on Lagos Road in Lusaka is the venue for Art Lives On – ii, an exhibition of artworks by Lutanda S. Mwamba (1966-2014) and Flinto S. Chandia (1955-2017) which opens next week on Thursday 7th November and runs until the end of February.
- Full Text:
- Date Issued: 2019
- Authors: Mulenga, Andrew
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/146868 , vital:38565 , https://www.themastonline.com/2019/10/29/mulling-over-art-lechwe-celebrates-2-zambian-art-icons/
- Description: LESS than a year after its official opening, the Lechwe Trust Art Gallery on Lagos Road in Lusaka is the venue for Art Lives On – ii, an exhibition of artworks by Lutanda S. Mwamba (1966-2014) and Flinto S. Chandia (1955-2017) which opens next week on Thursday 7th November and runs until the end of February.
- Full Text:
- Date Issued: 2019
Mulling over Art with Andrew Mulenga: Lechwe celebrates women
- Authors: Mulenga, Andrew
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/146849 , vital:38563 , https://www.themastonline.com/2019/10/15/mulling-over-art-lechwe-celebrates-women/
- Description: The Lechwe Trust Art Gallery in Lusaka is currently showing an exhibition titled “Women artists from the lechwe collection exhibition 2019” in which it showcases 41 artworks by over 30 women dating from 1970 to 2019.
- Full Text:
- Date Issued: 2019
- Authors: Mulenga, Andrew
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/146849 , vital:38563 , https://www.themastonline.com/2019/10/15/mulling-over-art-lechwe-celebrates-women/
- Description: The Lechwe Trust Art Gallery in Lusaka is currently showing an exhibition titled “Women artists from the lechwe collection exhibition 2019” in which it showcases 41 artworks by over 30 women dating from 1970 to 2019.
- Full Text:
- Date Issued: 2019
Mulling over Art with Andrew Mulenga: Ni Mzilo – it is taboo
- Authors: Mulenga, Andrew
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/146793 , vital:38558 , https://www.themastonline.com/2019/05/14/ni-mzilo-it-is-taboo/
- Description: “Ni Mzilo — It is taboo”, the ongoing solo exhibition by Agness Buya Yombwe at the Livingstone National Art Gallery that investigates the subject of Taboos and superstitions, but really anything from environmental concerns to prostate cancer is no secret by now, having been opened alongside the launch of a book also authored by the artist.
- Full Text:
- Date Issued: 2019
- Authors: Mulenga, Andrew
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/146793 , vital:38558 , https://www.themastonline.com/2019/05/14/ni-mzilo-it-is-taboo/
- Description: “Ni Mzilo — It is taboo”, the ongoing solo exhibition by Agness Buya Yombwe at the Livingstone National Art Gallery that investigates the subject of Taboos and superstitions, but really anything from environmental concerns to prostate cancer is no secret by now, having been opened alongside the launch of a book also authored by the artist.
- Full Text:
- Date Issued: 2019