title: Plug flow versus mixed flow modelling of a pressure screen

authors: Walmsley, Michael R.W.

subjects: engineering

abstract: The plug flow and mixed flow methods of modelling a screen are analysed in terms of screen length, internal fibre concentration and screen separation performance. Experimental data for consistency changes in screens of narrow length are incorporated into the analysis and from this data an equation for determining the real thickening in the screen and the fibre concentration profile along the screen is derived. Lastly, thicken equations are related to common equations used for modelling overall screen performance. The work directly links screen performance equations to passage ratio measurements from narrow length screen sections.

text: Plug flow versus mixed flow modelling of a pressure screen The plug flow and mixed flow methods of modelling a screen are analysed in terms of screen length, internal fibre concentration and screen separation performance. Experimental data for consistency changes in screens of narrow length are incorporated into the analysis and from this data an equation for determining the real thickening in the screen and the fibre concentration profile along the screen is derived. Lastly, thicken equations are related to common equations used for modelling overall screen performance. The work directly links screen performance equations to passage ratio measurements from narrow length screen sections.

year: 2001

title: Advocating for the environment, charity law and greenpeace: A New Zealand perspective

authors: Chevalier-Watts, Juliet

subjects: environmental law

abstract: In terms of environmental protection (and with reference to the filming location of the Lords of the Rings), New Zealand has been described as ‘a friend to Middle Earth, but no friend of the Earth’, which is in stark contrast to its international image that it seeks to foster of being ‘100% pure New Zealand’. This article considers the tension between New Zealand’s approach to environmental advocacy from a charity law perspective, and in particular, the way in which charitable advocacy for the environment has been impacted by the limitations imposed on environmental charities through the charity law doctrine of political purposes. In carrying out this analysis, the article tracks the legal evolution of this doctrine and considers whether recent legal changes have resulted in charity law enabling New Zealand to become ‘a friend to Middle Earth, and a friend of the Earth’ through the apparent broadening of the actions that can be taken by environmental charity advocates.

text: Advocating for the environment, charity law and greenpeace: A New Zealand perspective In terms of environmental protection (and with reference to the filming location of the Lords of the Rings), New Zealand has been described as ‘a friend to Middle Earth, but no friend of the Earth’, which is in stark contrast to its international image that it seeks to foster of being ‘100% pure New Zealand’. This article considers the tension between New Zealand’s approach to environmental advocacy from a charity law perspective, and in particular, the way in which charitable advocacy for the environment has been impacted by the limitations imposed on environmental charities through the charity law doctrine of political purposes. In carrying out this analysis, the article tracks the legal evolution of this doctrine and considers whether recent legal changes have resulted in charity law enabling New Zealand to become ‘a friend to Middle Earth, and a friend of the Earth’ through the apparent broadening of the actions that can be taken by environmental charity advocates.

year: 2022

title: Ma hea – which way? Mo te aha – what for?

authors: Te Awekotuku, Ngahuia

subjects: prejudice

abstract: Keynote address to the annual conference of the
NZ Psychological Society, 28 August 2004
E rau rangatira ma, tena ra koutou….
This presentation will be in four sections.
The first section will introduce two major issues, mana motuhake, and
manatangata, then we will consider some proposed legislation, the Seabed
& Foreshore Bill and the Civil Union Bill.
We will then consider strategic Maori response to political pressure over the
last three decades, and then note two recent and dramatic examples. They
are the Hikoi Takutai Moana, April 2004, and the Enough is Enough Rally,
August 2004
In the final section, we will consider the implications for psychologies and
psychologists working today in Aotearoa.

text: Ma hea – which way? Mo te aha – what for? Keynote address to the annual conference of the
NZ Psychological Society, 28 August 2004
E rau rangatira ma, tena ra koutou….
This presentation will be in four sections.
The first section will introduce two major issues, mana motuhake, and
manatangata, then we will consider some proposed legislation, the Seabed
& Foreshore Bill and the Civil Union Bill.
We will then consider strategic Maori response to political pressure over the
last three decades, and then note two recent and dramatic examples. They
are the Hikoi Takutai Moana, April 2004, and the Enough is Enough Rally,
August 2004
In the final section, we will consider the implications for psychologies and
psychologists working today in Aotearoa.

year: 2003-08