... in shojo manga and to examine how shōjo mangaka (girls' manga artists) have contributed to the development ... hundred artworks created by twenty-three renowned shōjo mangaka are introduced chronologically in three major generations over ... Dawn of Modern Shojo Manga In general, shōjo mangaka create manga for girls and women; however, these ... the 1930s and 1940s were created by male mangaka. Four of them (Tezuka Osamu, Chiba Tetsuya, Ishinomori ...
Tópico(s): Digital Games and Media
2007 - University of Minnesota Press | Mechademia Second Arc
... commercial scale. In Japan, the creators of comics (Mangaka) keep their copyright- a direct contradiction to current ... control best explain why Mangas are successful and Mangaka keep their rights.
Tópico(s): Copyright and Intellectual Property
2019 - Taylor & Francis | Creative Industries Journal
... behind-the-scenes tours exploring Shueisha offices or mangaka ateliers to spill insider knowledge and industry secrets. ...
Tópico(s): Asian Culture and Media Studies
2019 - SAGE Publishing | Television & New Media
Ncediwe Tsolekile, Sara Nahle, Nkosingiphile Zikalala, Sundararajan Parani, El Hadji Mamour Sakho, Olivier Joubert, Mangaka C. Matoetoe, Sandile P. Songca, Oluwatobi S. Oluwafemi,
Abstract The toxicity of heavy metals present in binary semiconductor nanoparticles also known as quantum dots (QDs) has hindered their wide applications hence the advent of non-toxic ternary quantum dots. These new group of quantum dots have been shown to possess some therapeutic action against cancer cell lines but not significant enough to be referred to as an ideal therapeutic agent. In this report, we address this problem by conjugating red emitting CuInS/ZnS QDs to a 5,10,15,20-tetrakis(3-hydroxyphenyl) ...
Tópico(s): Nanocluster Synthesis and Applications
2020 - Nature Portfolio | Scientific Reports
Ncediwe Tsolekile, Sundararajan Parani, Vuyelwa Ncapayi, Rodney Maluleke, Mangaka C. Matoetoe, Sandile P. Songca, Oluwatobi S. Oluwafemi,
Ternary I-III-VI quantum dots (QDs) have become attractive fluorescent materials due to their low toxicity compared to conventional binary II-VI based QDs. However, these QDs have been majorly synthesized in an organic medium under harsh conditions which is not eco-friendly. Herein, we report aqueous synthesis of glutathione (GSH) capped Cu–In–S based QDs using reflux approach at 95 °C and investigated the effect of synthetic parameters such as Cu:In precursor ratio, pH and the amount of GSH on the ...
Tópico(s): Semiconductor materials and interfaces
2020 - Elsevier BV | Journal of Luminescence
Serapius Mwalongo, Essègbémon Akpo, Gerald Alex Lukurugu, Geoffrey Muricho, Ronnie Vernooy, Athanas Minja, Chris O. Ojiewo, Esther Njuguna, Gloria Otieno, Rajeev K. Varshney,
... Johari 1985, Pendo 1998, Naliendele 2009, Mnanje 2009, Mangaka 2009 and Nachi 2015, are the main six ...
Tópico(s): Food Security and Health in Diverse Populations
2020 - Multidisciplinary Digital Publishing Institute | Agronomy
Ncediwe Tsolekile, Vuyelwa Ncapayi, Gabriel K. Obiyenwa, Mangaka C. Matoetoe, Sandile P. Songca, Oluwatobi S. Oluwafemi,
Background: Metal-free, water-soluble and highly stable meso-tetra-(4-sulfonatophenyl) porphyrin (TPPS 4 ) has been studied for their singlet oxygen quantum yield. However, TPPS 4 suffers from inherent shortcomings. To address these, TPPS 4 was conjugated to ternary copper indium sulphide/ zinc sulphide (CuInS 2 /ZnS) quantum dots (QDs). Purpose: We herein report for the first time the synthesis of TPPS 4 –CuInS/ZnS QDs conjugate as an improved photosensitizer. Methods: Water-soluble TPPS 4 was synthesized ...
Tópico(s): Nanoplatforms for cancer theranostics
2019 - Dove Medical Press | International Journal of Nanomedicine
Ncediwe Tsolekile, Vuyelwa Ncapayi, Sundararajan Parani, El Hadji Mamour Sakho, Mangaka C. Matoetoe, Sandile P. Songca, Oluwatobi S. Oluwafemi,
Tópico(s): Quantum Dots Synthesis And Properties
2018 - Springer Nature | MRS Communications
Ncediwe Tsolekile, Sundararajan Parani, Mangaka C. Matoetoe, Sandile P. Songca, Oluwatobi S. Oluwafemi,
The paradigm-shift in quantum dot (QDs) synthesis and applications in the past decade have seen the development of an array of semiconductor QDs. The II–VI or IV–VI QDs are still the most researched QDs undoubtedly. However, safer alternatives within the ternary I–III–VI QDs are currently being pursued. This has resulted in an increased new body of knowledge on nanomaterial technology. This paper reviews the evolution of synthetic methods for I–III–VI QDs and their surface modification techniques ...
Tópico(s): Copper-based nanomaterials and applications
2017 - Elsevier BV | Nano-Structures & Nano-Objects
Malefetsane Khesuoe, Fredrick Okumu, Mangaka C. Matoetoe,
An electrochemical immunosensor based on a silver nanoparticles (Ag NPs)-doped polyaniline (PANI) modified glassy carbon electrode (GCE) transducer, wherein polyclonal anti -polychlorinated biphenyl (PCB) antibody (Ab) was immobilized by a covalent linkage with glutaraldehyde (GA), was developed.
Tópico(s): Electrochemical Analysis and Applications
2016 - Royal Society of Chemistry | Analytical Methods
Portia Modiba, Mangaka C. Matoetoe, Andrew M. Crouch,
Electrochemical kinetics of Ce(IV), Cr(III) and V(IV) and their diethylenetriaminepentaacetic acid (DTPA) complexes are studied by electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) on Pt-electrode. Kinetic parameters such as potential, limiting current, transfer coefficient, diffusion coefficients, and rate constants were examined. The EIS results confirm the results from CV and are in good agreement with the obtained experimental data. The Cr–DTPA complex rate constant of 2. ...
Tópico(s): Electrochemical Analysis and Applications
2013 - Elsevier BV | Electrochimica Acta
Portia Modiba, Mangaka C. Matoetoe, Andrew M. Crouch,
Abstract The electrochemical behaviour of cerium with ethylenediamine tetraacetic acid (Ce(IV)–EDTA), ethylenediamine disuccinate (Ce(IV)–EDDS), nitrilotriacetic acid (Ce(IV)–NTA) and diethylenetriamine pentaacetic acid (Ce(IV)–DTPA on a platinum electrode were investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) for redox flow batteries (RFB) application. The EIS results confirm the results from CV and were in good agreement with obtained data. Ce(IV)–DTPA results show ...
Tópico(s): Ionic liquids properties and applications
2012 - Elsevier BV | Journal of Power Sources
Jacobus F. van Staden, Mangaka C. Matoetoe,
The use of differential pulse anodic stripping voltammetry (DPASV) in a flow system for the simultaneous determination of Cu, Cd, Fe, Pb and Zn was evaluated for applicability with a glassy carbon electrode. Simultaneous quantitative analysis for these elements is possible at low concentrations of Fe when using pyrophosphate as a supporting electrolyte (pH 4.0). An application of the proposed method is reported for the determination of these elements in water samples. The working ranges are 50–500 ...
Tópico(s): Advanced Chemical Sensor Technologies
2000 - Elsevier BV | Analytica Chimica Acta
Jacobus F. van Staden, Mangaka C. Matoetoe,
Iron(II) and iron(III) complexes of pyrophosphate can be determined simultaneously at pH 9. The peak potentials used were −0.8 and 0.5 V for Fe(III) and Fe(II), respectively. Linear calibration plots over the range 10−6–10−3 mol l−1 were obtained. Detailed iron-couple cyclic voltammetric studies, sample handling procedures, possible interferences and applications of the method to real samples are described. Detection limits of 10−8 mol l−1 and a relative standard deviation of <4% (n=14) were achieved ...
Tópico(s): Electrochemical sensors and biosensors
1998 - Elsevier BV | Analytica Chimica Acta
Anne Irving, Klaus R. Koch, Mangaka C. Matoetoe,
N,N-Di(n-butyl)-N′-benzoylthiourea readily reacts with PtX42− to yield neutral cis-[PtL2] complexes for X = Cl− and Br−, while for X = I−, the protonated cis-[Pt(LH)2]I2 complex is isolated. The crystal structure of cis-[PtL2] is reported. In chloroform solution, the neutral cis-[PtL2] complexes may readily be protonated to yield a distribution of cis-[Pt(LH)L]+ and cis-[Pt(LH)2]2+ species which have been characterized by means of high resolution multinuclear NMR. Remarkably the 195Pt chemical shift ...
Tópico(s): Organometallic Complex Synthesis and Catalysis
1993 - Elsevier BV | Inorganica Chimica Acta
Nozikumbuzo Anati Vitshima, Bongiwe Silwana, Ncediwe Tsolekile, Mangaka C. Matoetoe,
Ternary I–III–VI quantum dots (QDs) have proved to be promising alternatives to the traditional binary Cd-QDs due to their inherently lower toxicities, greener synthetic methods, and tunable optoelectronic properties. Their application in the development of biosensors, electroluminescent devices, and a range of other electrochemical applications has resulted in the I–III–VI QDs receiving widespread attention in various fields. In this paper, water-soluble glutathione capped AgInS core QDs and AIS/ ...
Tópico(s): Nanocluster Synthesis and Applications
2021 - Elsevier BV | Journal of Alloys and Compounds
... animals, conformity and pariahs, and gender roles. Japanese mangaka (manga author-artists) routinely use shape-shifters of ... transforms into a fully human boy. Clearly, Japanese mangaka are aware of, and see the connection of ...
Tópico(s): Japanese History and Culture
2006 - University of Minnesota Press | Mechademia Second Arc
Klaus R. Koch, Mangaka C. Matoetoe,
Abstract A series of neutral cis ‐[ML 2 ] complexes, where M = Pd(II) and Pt(II) and L = para ‐substituted N , N ‐dialkyl‐ N ′‐benzoyl‐thio‐urea anion, were examined by means of 13 C and 195 Pt NMR. Unambiguous assignment of the thiocarbonyl carbon atom in these complexes was achieved with 13 C isotopic enrichment and the resolved n J ( 195 Pt, 13 C) coupling satellites.
Tópico(s): Magnetism in coordination complexes
1991 - Wiley | Magnetic Resonance in Chemistry
Julie-Ann Hoffman, Ziba S. H. S. Rajan, Darija Susac, Mangaka C. Matoetoe, Rhiyaad Mohamed,
The widespread implementation of proton exchange membrane water electrolyzers (PEMWEs) is greatly hindered by the availability and high costs associated with key catalyst and electrode components. The anodic oxygen evolution reaction (OER) is known to be kinetically challenging and therefore requires substantially high loadings of Ir-based catalysts (∼2 mg cm–2). A promising strategy to lower the amount of iridium is to enhance the electrocatalytically active surface area, by means of dispersing finely ...
Tópico(s): Fuel Cells and Related Materials
2023 - American Chemical Society | The Journal of Physical Chemistry C
Fredrick Okumu, Bongiwe Silwana, Mangaka C. Matoetoe,
Abstract A study of nanosensor comprising of a glassy carbon electrode modified with a composite of multiwall carbon nanotube (MWCNT) and bimetallic (Ag‐PtNPs) for the determination of Nevirapine. The GCE/MWCNT/Ag‐PtNPs sensor had remarkable electrocatalytic properties with enhanced response towards Nevirapine under optimized conditions. The platform electrochemical characterisation in 0.01 M NaOH solution, with cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and differential pulse ...
Tópico(s): Advanced biosensing and bioanalysis techniques
2020 - Wiley | Electroanalysis
Ncediwe Tsolekile, Sundararajan Parani, Rodney Maluleke, Olivier Joubert, Mangaka C. Matoetoe, Sandile P. Songca, Oluwatobi S. Oluwafemi,
Quantum dots (QDs) have been resourceful in bio-applications such as fluorescent tagging, sensing, and bio-assays. Their bio-recognition and subsequent acceptance as foreign bodies by biomolecules largely depend on the surface structure of the QDs. Surface functionalization is thus a critical factor in their synthesis and design. In this work, we report on the surface modification of CuInS/ZnS QDs by an α-amino acid which plays an essential role in cell division and wound healing. The CuInS/ZnS QDs ...
Tópico(s): Polymer Surface Interaction Studies
2020 - Elsevier BV | Dyes and Pigments
Un mangaka en pays haïda
Tópico(s): Comics and Graphic Narratives
2018 - Ministry of Culture | Terrain
Sneha Mohan, Fredrick Okumu, Oluwatobi S. Oluwafemi, Mangaka C. Matoetoe, Omotayo A. Arotiba,
As the synthesis via completely green method is emerging, determination of the electrochemistry properties of the as-synthesized nanomaterials has become an important aspect of research. We herein investigate for the first time the inherent electrochemistry of silver nanoparticle modified multiwall carbon nanotubes (Ag NPs-MWCNTs) hybrid nanocomposites that was synthesized via a simple method using cyclic voltammetry (CV) as a diagnostic technique. The result obtained was compared with multiwall carbon ...
Tópico(s): Conducting polymers and applications
2016 - Elsevier BV | International Journal of Electrochemical Science
Fredrick Okumu, Mangaka C. Matoetoe,
Silver-platinum (Ag-Pt) bimetallic nanoparticles (NPs) with varying mole fractions (1:1, 1:3 and 3:1) were prepared by co-reduction of hexachloroplatinate and silver nitrate with sodium citrate. Upon successful formation of monometallic and bimetallic (BM) core shell nanoparticles, cyclic voltammetry (CV) was used to characterize the NPs. The drop coated nanofilms on the GC electrode showed characteristic peaks of monometallic Ag NPs; Ag + /Ag 0 redox couple as well as the Pt NPs; hydrogen adsorption and ...
Tópico(s): Conducting polymers and applications
2016 - | Journal of nano research
Mangaka C. Matoetoe, Fredrick Okumu, Connie Maphale, Olalekan S. Fatoki,
Tópico(s): Conducting polymers and applications
2015 - ASIAN PUBLICATION CORPORATION | Asian Journal of Chemistry
Jacobus F. van Staden, Mangaka C. Matoetoe,
Tópico(s): Electrochemical sensors and biosensors
1997 - Springer Science+Business Media | Fresenius Journal of Analytical Chemistry
Otieno Fredrick, Mangaka C. Matoetoe,
Simultaneous citrate reduction of various ratios of silver and platinum ions leads to the formation of core-shell nanostructured bimetallics (BM). Transmission electron microscopy (TEM) and X-ray diffraction XRD data of the BMs depicted crystalline core-shell nanoparticles consisting of Ag core and Pt shell with an average size of 22.2 nm in contrast to the Pt NPs and Ag NPs monometallics average sizes of 2.5 and 60.0 nm respectively. Tauc's calculated optical band gaps ranged from 3.55 to 4.02 eV ...
Tópico(s): Gold and Silver Nanoparticles Synthesis and Applications
2017 - Academic Journals | African Journal of Pure and Applied Chemistry
... not an autonomous art, and the creativity of mangaka (manga artists) cannot be considered apart from such ...
Tópico(s): Digital Games and Media
2013 - University of Minnesota Press | Mechademia Second Arc
Dye doped polymers (DCPs) has a wide application based on their optical and electrochemical properties. Dye sensitisation of conducting polymeric materials has gained a wide theoretical interest and practical application in sensors and solar cell technology. This review gives a broad summary on synthesis, the effect of the presence of dye in the polymer (properties, structure and conductivity), application in sensors and dye sensitised solar cells. Different sensing modes are also discussed as well ...
Tópico(s): Electrochemical sensors and biosensors
2010 - Trans Tech Publications | Materials science forum
Fredrick Okumu, Mangaka C. Matoetoe,
Tópico(s): Nanoparticles: synthesis and applications
2016 - Springer Science+Business Media | Acta Metallurgica Sinica (English Letters)