Search Results - "Focke, W"

Mosquito-repellent controlled-release formulations for fighting infectious diseases by Mapossa, António B, Focke, Walter W, Tewo, Robert K, Androsch, René, Kruger, Taneshka

“…Malaria is a principal cause of illness and death in countries where the disease is endemic. Personal protection against mosquitoes using repellents could be a…”
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Butyric acid, putrescine and their mixture as potential fly attractants: Complexation, thermal analysis and volatility characterisation by Pretorius, Franco, Toit, Elizabeth L. du, van der Westhuizen, Isbé, Atanasova, Maria T., Focke, Walter W

“…•A new parameter encapsulates the volatility as a material definite material property.•Its magnitude is readily determined using dynamic scanning…”
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Spontaneous microencapsulation of geraniol by zein by W Ferreira, I. V., Focke, W. W., du Toit, E. L.

“…Geraniol was successfully micro-encapsulated with zein in a one-step phase separation process in which the zein and geraniol were both initially dissolved in a…”
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Kinetic interpretation of log-logistic dose-time response curves by Focke, Walter W., van der Westhuizen, Isbe, Musee, Ndeke, Loots, Mattheüs Theodor

“…A Hill-type time-response curve was derived using a single-step chemical kinetics approximation. The rate expression for the transformation is a differential…”
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Thermally conductive phase-change materials for energy storage based on low-density polyethylene, soft Fischer–Tropsch wax and graphite by Mhike, W., Focke, W.W., Mofokeng, J.P., Luyt, A.S.

“…► 200% increase in thermal conductivity for wax/LDPE with 10 wt.% exfoliated graphite. ► Wax or LDPE does not influence degradation of other component –…”
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Properties of Mosquito Repellent-Plasticized Poly(lactic acid) Strands by Mapossa, António B, López-Beceiro, Jorge, Díaz-Díaz, Ana María, Artiaga, Ramón, Moyo, Dennis S, Mphateng, Thabang N, Focke, Walter W

“…Poly(lactic acid) (PLA) is an attractive candidate for replacing petrochemical polymers because it is fully biodegradable. This study investigated the…”
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Properties of graphite composites based on natural and synthetic graphite powders and a phenolic novolac binder by Magampa, P.P., Manyala, N., Focke, W.W.

“…► Model encasement material for fuel pebbles was prepared by uniaxial compression moulding. ► They featured anisotropic property behaviour due to partial…”
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Thermal analysis and FTIR studies of volatile corrosion inhibitor model systems by Focke, Walter W., Nhlapo, Nontete Suzan, Vuorinen, Eino

“…•Amine+1-octanoic acid mixtures are employed as volatile corrosion inhibitors.•They are applied as 1:1 salts to protect mild steel against atmospheric…”
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A Relatively Simple Look at the Rather Complex Crystallization Kinetics of PLLA by López-Beceiro, Jorge, Díaz-Díaz, Ana-María, Fernández-Pérez, Enrique, Ferreira, Ignatius, Focke, Walter W, Artiaga, Ramón

“…This work demonstrates that, despite the existence of a significant number of works on PLA crystallization, there is still a relatively simple way, different…”
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Characterisation of vumba and ubumba clays used for cosmetic purposes by Focke, Walter W., Grote, Wiebke, Morekhure-Mphahlele, Refilwe

“…Two traditional cosmetic clays bear similar names in different local South African languages: vumba (Tshivenda) and ubumba (isiZulu). The wet clays are applied…”
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Titania recovery from low-grade titanoferrous minerals by Manhique, Arao J., Focke, Walter W., Madivate, Carvalho

“…In this study a novel process for extraction of titanium valuables from its minerals is presented. The process entails roasting of titanium ore with alkaline…”
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Crystal structure and magnetic properties of CuSb2O4 by Atanasova, M. T., Strydom, A. M., Schutte, C. J. H., Prinsloo, L. C., Focke, W. W.

“…The crystal structure of a copper antimonite (CuSb 2 O 4 ) was determined from X-ray powder diffraction data. The structure was solved by simulated annealing…”
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Rheological behavior and thermal properties of pitch/poly(vinyl chloride) blends by Hlatshwayo, S.R., Focke, W.W., Ramjee, S., Rand, B., Manyala, N.

“…The effect of adding poly(vinyl chloride) (PVC) and coke filler on the rheological behavior and thermal properties of a coal tar pitch was investigated with a…”
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Development, characterization and modeling of mosquito repellent release from microporous devices by Sitoe, Alcides, Mapossa, António B., Focke, Walter W., Muiambo, Herminio, Androsch, René, Wesley‐Smith, James

“…Nanocomposite strands with mosquito repellent DEET or Icaridin incorporated in a poly(ethylene‐co‐vinyl acetate) (EVA) matrix, with either pyrogenic silica or…”
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Slow-DEET-Release Mosquito-Repellent System Based on Poly(butylene succinate) by Yener, Hande Ece, Erdmann, Rafael, Jariyavidyanont, Katalee, Mapossa, António B, Focke, Walter W, Hillrichs, Georg, Androsch, René

“…Bio-sourced and biodegradable poly­(butylene succinate) (PBS) strands containing up to 40 m% mosquito-repellent N,N-diethyl-3-methylbenzamide (DEET) were…”
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Thermal properties of sodium-exchanged palabora vermiculite by Muiambo, Hermínio F., Focke, Walter W., Atanasova, Maria, der Westhuizen, Isbe van, Tiedt, Louwrens R.

“…Palabora “vermiculite” represents an interstratified vermiculite-biotite containing less than 50% vermiculite. The sodium-exchanged form was prepared by…”
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A simplicial homology algorithm for Lipschitz optimisation by Endres, Stefan C., Sandrock, Carl, Focke, Walter W.

“…The simplicial homology global optimisation (SHGO) algorithm is a general purpose global optimisation algorithm based on applications of simplicial integral…”
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effect of Si–Bi₂O₃ on the ignition of the Al–CuO thermite by Ilunga, K, del Fabbro, O, Yapi, L, Focke, W.W

“…The ignition temperature of the Al–CuO thermite was measured using DTA at a scan rate of 50°Cmin⁻¹ in a nitrogen atmosphere. Thermite reactions are difficult…”
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Sensitising the micron-sized aluminium/potassium periodate thermite by Grobler, J. M., Focke, W. W., Derrick, N. P., Oberholster, A. J., Kelly, C., Labuschagne, G.

“…Addition of 10 wt-% Al/CuO and 5 wt-% Al/PTFE significantly sensitizes the Al/KIO 4 thermite. The energetic performance of this micron-sized blend approached…”
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Geometric effects control isothermal oxidation of graphite flakes by Badenhorst, Heinrich, Focke, Walter W.

“…The oxidation, in a neat oxygen atmosphere, of high-purity and highly crystalline natural graphite and synthetic Kish graphite was investigated. The…”
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