Search Results - "van Heerden, D."

Biomass accumulation in sugarcane: unravelling the factors underpinning reduced growth phenomena by van Heerden, Philippus D.R, Donaldson, Robin A, Watt, Derek A, Singels, Abraham

“…Constant radiation use efficiency throughout the entire sugarcane crop cycle is often assumed for crop yield forecasting and management purposes. However,…”
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role of low soil temperature in the inhibition of growth and PSII function during dark chilling in soybean genotypes of contrasting tolerance by Strauss, Abram J, Krüger, Gert H.J, Strasser, Reto J, van Heerden, Philippus D.R

“…Dark chilling affects growth and yield of warm-climate crops such as soybean [Glycine max (L.) Merr.]. Several studies have investigated chilling-stress…”
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Creep deformation mechanisms in fine-grained niobium by Lewis, A.C., Heerden, D. van, Eberl, C., Hemker, K.J., Weihs, T.P.

“…Creep rates in fine-grained Nb were measured at 600 °C using free-standing Cu/Nb polycrystalline multilayered foils. For specimens with layer thicknesses…”
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Self-propagating formation reactions in Nb/Si multilayers by Reiss, M.E., Esber, C.M., Van Heerden, D., Gavens, A.J., Williams, M.E., Weihs, T.P.

“…Structural silicides with promising high temperature mechanical properties can be fabricated into near-net shapes using self-propagating high-temperature…”
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Cysteine proteinases regulate chloroplast protein content and composition in tobacco leaves: a model for dynamic interactions with ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) vesicular bodies by Prins, Anneke, van Heerden, Philippus D.R, Olmos, Enrique, Kunert, Karl J, Foyer, Christine H

“…The roles of cysteine proteinases (CP) in leaf protein accumulation and composition were investigated in transgenic tobacco (Nicotiana tabacum L.) plants…”
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Effect of trifluoroacetate, a persistent degradation product of fluorinated hydrocarbons, on Phaseolus vulgaris and Zea mays by Smit, Martin F., van Heerden, Philippus D.R., Pienaar, Jakobus J., Weissflog, Ludwig, Strasser, Reto J., Krüger, Gert H.J.

“…The aim of this study was to quantify the effect of the pollutant, trifluoroacetate (TFA), on growth and photosynthesis of Phaseolus vulgaris (C 3) and Zea…”
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Mild experimental climate warming induces metabolic impairment and massive mortalities in southern African quartz field succulents by Musil, C.F., Van Heerden, P.D.R., Cilliers, C.D., Schmiedel, U.

“…Current thermal regimes for many southern African succulent species of the subfamily Ruschioideae, which rapidly diversified during the cooler Pleistocene…”
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Al/Ni formation reactions: characterization of the metastable Al9Ni2 phase and analysis of its formation by BLOBAUM, K. J, VAN HEERDEN, D, GAVENS, A. J, WEIHS, T. P

“…The sequence of intermediate phase formation in the Al/Ni system has been the subject of many investigations over the past two decades. The metastable phase…”
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An X-ray study of residual stresses and bending stresses in free-standing Nb/Nb5Si3 microlaminates by SHANG, C. H, VAN HEERDEN, D, GAVENS, A. J, WEIHS, T. P

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Tensile testing low density multilayers: Aluminum/titanium by Josell, D., van Heerden, D., Read, D., Bonevich, J., Shechtman, D.

“…Yield stresses, ultimate tensile strengths, and specific strengths of aluminum/titanium multilayer thin films are determined from the results of uniaxial…”
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Effects on both the roots and shoots of soybean during dark chilling determine the nature and extent of photosynthesis inhibition by Strauss, Abram J., van Heerden, Philippus D.R.

“…• Shoot and whole-plant chilling initially induced similar photosynthetic inhibition in soybean. • These symptoms included inhibition of PSII, chloroplast…”
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Dynamic responses of photosystem II in the Namib Desert shrub, Zygophyllum prismatocarpum, during and after foliar deposition of limestone dust by van Heerden, P.D.R., Krüger, G.H.J., Kilbourn Louw, M.

“…The effects of limestone dust deposition on vegetation in desert ecosystems have not yet been reported. We investigated these effects in a succulent shrub from…”
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Regulation of Respiration and the Oxygen Diffusion Barrier in Soybean Protect Symbiotic Nitrogen Fixation from Chilling-Induced Inhibition and Shoots from Premature Senescence by van Heerden, Philippus D.R, Kiddle, Guy, Pellny, Till K, Mokwala, Phatlane W, Jordaan, Anine, Strauss, Abram J, de Beer, Misha, Schlüter, Urte, Kunert, Karl J, Foyer, Christine H

“…Symbiotic nitrogen fixation is sensitive to dark chilling (7°C-15°C)-induced inhibition in soybean (Glycine max). To characterize the mechanisms that cause the…”
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Continuous and batch cultures of Escherichia coli KJ134 for succinic acid fermentation: metabolic flux distributions and production characteristics by van Heerden, Carel D, Nicol, Willie

“…Succinic acid (SA) has become a prominent biobased platform chemical with global production quantities increasing annually. Numerous genetically modified E…”
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Fabrication and evaluation of Nb/Nb5Si3 microlaminate foils by GAVENS, A. J, VAN HEERDEN, D, FOECKE, T, WEIHS, T. P

“…Alloys of Nb and Nb5Si3, and in particular Nb/Nb5Si3 microlaminates, have potential as high-temperature materials. In this study, microlaminates of Nb and…”
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Continuous succinic acid fermentation by Actinobacillus succinogenes by van Heerden, C.D., Nicol, W.

“…Fermentations were performed in an external recycle bioreactor using CO2 and d-glucose at feed concentrations of 20 and 40gL−1. Severe biofilm formation…”
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Creep deformation in multilayered and microlaminate materials by Lewis, A C, Van Heerden, D, Josell, D, Weihs, T P

“…Fine-grained microstructures can also be stabilized by using thin film samples. Grain growth is typically limited to the film thickness through moderate test…”
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Evaluation of vapor deposited Nb/Nb5Si3 microlaminates by VAN HEERDEN, D, GAVENS, A. J, FOECKE, T, WEIHS, T. P

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Genetic variation in pea (Pisum sativum L.) demonstrates the importance of root but not shoot C/N ratios in the control of plant morphology and reveals a unique relationship between shoot length and nodulation intensity by LUDIDI, NDIKO N, PELLNY, TILL K, KIDDLE, GUY, DUTILLEUL, CHRISTELLE, GROTEN, KARIN, VAN HEERDEN, PHILIPPUS D.R, DUTT, SOM, POWERS, STEPHEN J, RÖMER, PETER, FOYER, CHRISTINE H

“…Nodule numbers are regulated through systemic auto-regulatory signals produced by shoots and roots. The relative effects of shoot and root genotype on nodule…”
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Mechanisms of photosynthetic and growth inhibition of a southern African geophyte Tritonia crocata (L.) Ker. Gawl. by an invasive European annual grass Lolium multiflorum Lam by Musil, C.F., Arnolds, J.L., van Heerden, P.D.R., Kgope, B.S.

“…European annual grasses are displacing native species along South Africa's West Coast, a region rich in wildflower diversity which forms the basis of a growing…”
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