Now showing items 1-20 of 2630

  • A modified energy transfer diagram for heat exchanger network retrofit bridge analysis

    Walmsley, Michael R.W.; Lal, Nathan S.; Walmsley, Timothy Gordon; Atkins, Martin J. (AIDIC (Italian Association of Chemical Engineering), 2017)
    The aim of this paper is to modify the Energy Transfer Diagram (ETD) to be able to graphically determine retrofit options and the amount of heat transferred. The ETD is a graphical methodology to represent a process and/or ...
  • Total site heat integration of multi-effect evaporators with vapour recompression for older kraft mills

    Walmsley, Timothy Gordon; Atkins, Martin John; Ong, Benjamin H.Y.; Klemeš, Jiří Jaromir; Walmsley, Michael R.W.; Varbanov, Petar S. (AIDIC (Italian Association of Chemical Engineering), 2017)
    This paper aims to apply Total Site Heat Integration (TSHI) to appropriately integrate Mechanical and Thermal Vapour Recompression with multi-effect evaporators at older Kraft Mills, to cause a step reduction in fossil ...
  • A comparison of utility heat exchanger network synthesis for total site heat integration methods

    Tarighaleslami, Amir H.; Walmsley, Timothy Gordon; Atkins, Martin John; Walmsley, Michael R.W.; Neale, James R. (AIDIC (Italian Association of Chemical Engineering), 2017)
    This paper compares Utility Heat Exchanger Network (UEN) design between two Total Site Heat Integration (TSHI) methods, the Conventional Total Site Targeting method (CTST) and the recently developed Unified Total Site ...
  • Macromolecular Rate Theory (MMRT) Provides a Thermodynamics Rationale to Underpin the Convergent Temperature Response in Plant Leaf Respiration

    Liang, Liying L.; Arcus, Vickery L.; Heskel, Mary A.; O'Sullivan, Odhran S.; Weerasinghe, Lasantha K.; Creek, Dainelle; Egerton, John J.G.; Tjoelker, Mark G.; Atkin, Owen K.; Schipper, Louis A.
    Temperature is a crucial factor in determining the rates of ecosystem processes, for example, leaf respiration (R) – the flux of plant respired CO₂ from leaves to the atmosphere. Generally, R increases exponentially with ...
  • Carbon emissions efficiency and economics of combined heat and power in New Zealand

    Atkins, Martin John; Walmsley, Timothy Gordon; Philipp, Matthias; Walmsley, Michael R.W.; Neale, James R. (AIDIC (Italian Association of Chemical Engineering), 2017)
    Combined Heat and Power (CHP) or cogeneration, is a common and often cost effective method to maximise the efficiency and utilisation of fossil fuels. Greenhouse Gas (GHG) emissions from the electricity generated using CHP ...
  • Municipal sewage sludge compost promotes Mangifera persiciforma tree growth with no risk of heavy metal contamination of soil

    Chu, Shuangshuang; Wu, Daoming; Liang, Liyin L.; Zhong, Fengdi; Hu, Yaping; Hu, Xinsheng; Lai, Can; Zeng, Shucai (2017)
    Application of sewage sludge compost (SSC) as a fertilizer on landscaping provides a potential way for the effective disposal of sludge. However, the response of landscape trees to SSC application and the impacts of heavy ...
  • Continuous Beam Steering Through Broadside Using Asymmetrically Modulated Goubau Line Leaky-Wave Antennas

    Tang, Xiao-Lan; Zhang, Qingfeng; Hu, Sanming; Zhuang, Yaqiang; Kandwal, Abhishek; Zhang, Ge; Chen, Yifan (2017-12-01)
    Goubau line is a single-conductor transmission line, featuring easy integration and low-loss transmission properties. Here, we propose a periodic leaky-wave antenna (LWA) based on planar Goubau transmission line on a thin ...
  • Mangroves and seagrass: Indicators of estuarine health?

    de Lange, Willem P. (2016-06-01)
    Mangrove and seagrass occupy different environments within an estuary, and both potentially respond to environmental stressors such as, nutrient loading, sedimentation, turbidity and climate change. Therefore, they could ...
  • Landslides research at Omokoroa

    Moon, Vicki G.; de Lange, Willem P. (2017-10-26)
    Summary of research progress into causes of landsliding at Omokora to the Operations and Monitoring Committee (Komiti Whakahaere) of the Western Bays District Council
  • The economics of cooperative education: A practioners guide to the theoretical framework and empirical assessment of cooperative education by Yasushi Tanaka[Book Review]

    Zegwaard, Karsten E. (New Zealand Association for Cooperative Edcuation, 2015)
    This article reviews the book “The economics of cooperative education: A practioners guide to the theoretical framework and empirical assessment of cooperative education” by Yasushi Tanaka
  • Use of effective-capacitance variation as a measure of state-of-health in a series-connected automotive battery pack

    Leijen, Peter; Steyn-Ross, D. Alistair; Kularatna, Nihal (Institute of Electrical and Electronics Engineers, 2017)
    In electric and hybrid-electric vehicles, series-connected battery packs are commonly used. Should the state-of-health (SOH) of one or several individual cells deteriorate, the entire battery pack is affected, reducing ...
  • Interaction of polar and tropical influences in the mid-latitudes of the Southern Hemisphere during the Mi-1 deglaciation

    Fox, Beth R.S.; D'Andrea, W.J.; Wilson, G.S.; Lee, D.E.; Wartho, J.-A. (Elsevier, 2017)
    It is well-known from geologic archives that Pleistocene and Holocene climate is characterised by cyclical variation on a wide range of timescales, and that these cycles of variation interact in complex ways. However, it ...
  • Rapid global ocean-atmosphere response to Southern Ocean freshening during the last glacial

    Turney, Chris S.M.; Jones, Richard T.; Phipps, Steven J.; Thomas, Zoë; Hogg, Alan G.; Kershaw, A. Peter; Fogwill, Christopher J.; Palmer, Jonathan; Bronk Ramsey, Christopher; Adolphi, Florian; Muscheler, Raimund; Hughen, Konrad A.; Staff, Richard A.; Grosvenor, Mark; Golledge, Nicholas R.; Olander Rasmussen, Sune; Hutchinson, David K.; Haberle, Simon; Lorrey, Andrew; Boswijk, Gretel; Cooper, Alan (Nature Publishing Group, 2017)
    Contrasting Greenland and Antarctic temperatures during the last glacial period (115,000 to 11,650 years ago) are thought to have been driven by imbalances in the rates of formation of North Atlantic and Antarctic Deep ...
  • Environmental drivers of viral community composition in Antarctic soils identified by viromics

    Adriaenssens, Evelien M.; Kramer, Rolf; Van Goethem, Marc W.; Makhalanyane, Thulani P.; Hogg, Ian D.; Cowan, Don A. (BioMed Central, 2017)
    Background The Antarctic continent is considered the coldest and driest place on earth with simple ecosystems, devoid of higher plants. Soils in the ice-free regions of Antarctica are known to harbor a wide range of ...
  • Electromagnetic damper control strategies for light weight electric vehicles

    Fow, Alista John; Duke, Mike (IEEE, 2016)
    An investigation is conducted into the performance of passive, semi-active and active electromagnetic dampers. Theoretical models are constructed of the dampers and these are included in two degree of freedom models of the ...
  • Processing, microstructure and high strain rate behaviour of Ti-6Al-4V Alloy produced from a blended mixture using powder compact extrusion

    Singh, Ajit Pal; Gabbitas, Brian; Yang, Fei; Torrens, Rob (Trans Tech Publications, 2016)
    Powder compact extrusion (PCE) is an innovative way of processing titanium and titanium alloys to produce good-quality material with a wide range of compositions, microstructures and mechanical properties. This paper ...
  • Innovative hybrid heat pump for dryer process integration

    Walmsley, Timothy Gordon; Klemeš, Jiří Jaromir; Walmsley, Michael R.W.; Atkins, Martin John; Varbanov, Petar S. (The Italian Association of Chemical Engineering, 2017)
    This study aims to simulate and optimise a hybrid compression-absorption heat pump process for convective dryers considering Pinch design principles. With a greening electricity grid, heat pumps represent an effective ...
  • Biomass estimation of invasive fish

    Hicks, Brendan J.; Brijs, Jeroen; Daniel, Adam Joshua; Morgan, Dai K.J.; Ling, Nicholas (Lake Ecosystem Restoration New Zealand (LERNZ) & Department of Conservation, 2015)
    Invasive fish have a variety of effects on indigenous fish communities and freshwater ecosystems generally, and the magnitude of these effects is partly dependent on invasive fish biomass. For example, a koi carp biomass ...
  • Costs and effectiveness of different methods for capturing invasive fish

    Hicks, Brendan J.; Daniel, Adam Joshua; Ling, Nicholas; Morgan, Dai K.J.; Gauthier, Stephane (Lake Ecosystem Restoration New Zealand (LERNZ) & Department of Conservation, 2015)
    Comparisons of the effectiveness of different fishing techniques in non-wadeable habitats give insights into the relative abundance of invasive fish and native fish, which is important to provide evidence for changes in ...
  • A roadmap for Antarctic and Southern Ocean science for the next two decades and beyond

    Kennicutt, MC; Chown, SL; Cassano, JJ; Liggett, D; Peck, LS; Massom, R; Rintoul, SR; Storey, J; Vaughan, DG; Wilson, TJ; Allison, I; Ayton, J; Badhe, R; Baeseman, J; Barrett, PJ; Bell, RE; Bertler, N; Bo, S; Brandt, A; Bromwich, D; Cary, S. Craig; Clark, MS; Convey, P; Costa, ES; Cowan, D; Deconto, R; Dunbar, R; Elfring, C; Escutia, C; Francis, J; Fricker, HA; Fukuchi, M; Gilbert, N; Gutt, J; Havermans, C; Hik, D; Hosie, G; Jones, C; Kim, YD; Le Maho, Y; Lee, SH; Leppe, M; Leitchenkov, G; Li, X; Lipenkov, V; Lochte, K; López-Martínez, J; Lüdecke, C; Lyons, W; Marenssi, S; Miller, H; Morozova, P; Naish, T; Nayak, S; Ravindra, R; Retamales, J; Ricci, CA; Rogan-Finnemore, M; Ropert-Coudert, Y; Samah, AA; Sanson, L; Scambos, T; Schloss, IR; Shiraishi, K; Siegert, MJ; Simões, JC; Storey, B; Sparrow, MD; Wall, DH; Walsh, JC; Wilson, G; Winther, JG; Xavier, JC; Yang, H; Sutherland, WJ (Cambridge University Press, 2015)
    Antarctic and Southern Ocean science is vital to understanding natural variability, the processes that govern global change and the role of humans in the Earth and climate system. The potential for new knowledge to be ...