title: Is there a potassium-based solution to sensitive soil slipping within the Bay of Plenty?

authors: Robertson, Thomas Paul

subjects: halloysite

abstract: Landslides are common in sensitive, weathered pyroclastic soils in the Bay of Plenty (BOP). The clay mineralogy of these soils is dominated by halloysite, an inactive 1:1 clay mineral. Manipulation of cation content within the pore water of sensitive soils has been shown to improve in situ soil strength in illite-dominated soils in Norway. We present results of laboratory tests on the impact of altering cation status of a sensitive soil from the base of a large landslide at Omokoroa near Tauranga, BOP. Addition of KCl and KOH both reduced the liquid limit of the soil, a negative effect. In contrast, addition of K₂CO₃ caused an increase in the plasticity index of soil pastes. Soaking intact samples in K₂CO₃ for three weeks resulted in a considerable increase in peak stress in effective stress triaxial testing. These early results suggest that mitigation of sensitive soil landslides through increasing peak strength by addition of appropriate salts to the soil profile may be an option for mitigation of landslides in sensitive BOP soils.

text: Is there a potassium-based solution to sensitive soil slipping within the Bay of Plenty? Landslides are common in sensitive, weathered pyroclastic soils in the Bay of Plenty (BOP). The clay mineralogy of these soils is dominated by halloysite, an inactive 1:1 clay mineral. Manipulation of cation content within the pore water of sensitive soils has been shown to improve in situ soil strength in illite-dominated soils in Norway. We present results of laboratory tests on the impact of altering cation status of a sensitive soil from the base of a large landslide at Omokoroa near Tauranga, BOP. Addition of KCl and KOH both reduced the liquid limit of the soil, a negative effect. In contrast, addition of K₂CO₃ caused an increase in the plasticity index of soil pastes. Soaking intact samples in K₂CO₃ for three weeks resulted in a considerable increase in peak stress in effective stress triaxial testing. These early results suggest that mitigation of sensitive soil landslides through increasing peak strength by addition of appropriate salts to the soil profile may be an option for mitigation of landslides in sensitive BOP soils.

year: 2017

title: Interstellar neutral hydrogen in the heliosphere: new horizons observations in the context of models

authors: Swaczyna, P

subjects: mathematics

abstract: Interstellar neutral (ISN) hydrogen is the most abundant species in the outer heliosheath and the very local interstellar medium (VLISM). Charge-exchange collisions in the outer heliosheath result in filtration, reducing the ISN hydrogen density inside the heliosphere. Additionally, these atoms are intensively ionized close to the Sun, resulting in a substantial reduction of their density within a few astronomical units from the Sun. The products of this ionization—pickup ions (PUIs)—are detected by charged particle detectors. The Solar Wind Around Pluto instrument on New Horizons provides, for the first time, PUI observations from the distant heliosphere. We analyze the observations collected between 22 and 52 au from the Sun to find the ISN hydrogen density profile and compare the results with predictions from global heliosphere models. We conclude that the density profile derived from the observations is inconsistent with steady-state model predictions. This discrepancy is not explained by time variations close to the Sun and thus may be related to the temporal evolution of the outer boundaries or VLISM conditions. Furthermore, we show that the cold and hot models of ISN hydrogen distribution are not a good approximation closer to the termination shock. Therefore, we recommend a new fiduciary point based on the available New Horizons observations at 40 au from the Sun, at ecliptic direction (285.°62, 1.°94), where the ISN hydrogen density is 0.11 cm−3. The continued operation of New Horizons should give better insight into the source of the discussed discrepancy.

text: Interstellar neutral hydrogen in the heliosphere: new horizons observations in the context of models Interstellar neutral (ISN) hydrogen is the most abundant species in the outer heliosheath and the very local interstellar medium (VLISM). Charge-exchange collisions in the outer heliosheath result in filtration, reducing the ISN hydrogen density inside the heliosphere. Additionally, these atoms are intensively ionized close to the Sun, resulting in a substantial reduction of their density within a few astronomical units from the Sun. The products of this ionization—pickup ions (PUIs)—are detected by charged particle detectors. The Solar Wind Around Pluto instrument on New Horizons provides, for the first time, PUI observations from the distant heliosphere. We analyze the observations collected between 22 and 52 au from the Sun to find the ISN hydrogen density profile and compare the results with predictions from global heliosphere models. We conclude that the density profile derived from the observations is inconsistent with steady-state model predictions. This discrepancy is not explained by time variations close to the Sun and thus may be related to the temporal evolution of the outer boundaries or VLISM conditions. Furthermore, we show that the cold and hot models of ISN hydrogen distribution are not a good approximation closer to the termination shock. Therefore, we recommend a new fiduciary point based on the available New Horizons observations at 40 au from the Sun, at ecliptic direction (285.°62, 1.°94), where the ISN hydrogen density is 0.11 cm−3. The continued operation of New Horizons should give better insight into the source of the discussed discrepancy.

year: 2024

title: Performing Femininity. Carmen - Good Ship Lollipop: A solo performance

authors: Fraser, Elroy

subjects: Performance

abstract: In the tradition of queer fringe theatre, Carmen - Good Ship Lollipop: a solo performance was written by a queer playwright, with a queer message for a queer audience.  The play was devised by drawing on Queer Theatre practice and methodology.
The following thesis details the process I undertook to create Carmen - Good Ship Lollipop: a solo performance. The story was created using biographical content already in the public arena. The play is about the public life of the late Carmen Rupe, New Zealand’s most famous transsexual. 
A historical perspective of men performing as women, or more fittingly, femininity performed by those other than female is presented by drawing on literature of this genre. The place of the solo performer and the combined roles of the actor, director, and producer are explored. Definitions of queer theatre and female impersonation are presented and issues of imitation, innovation and authenticity discussed.
The first methodology section details the choice of the particular playtext, the scriptwriting process, and dramaturgical analysis of Carmen – Good Ship Lollipop: a solo performance 
The second methodology section details the ‘script to stage’ production process. The development of the rehearsal script and the decision to limit the rehearsal period to one week is discussed. The plays evolution in terms of style and structure is presented.
The conclusion analyses the final product: to what extent Carmen - Good Ship Lollipop: a solo performance is faithful the Queer Theatre genre, successful as a performance piece, and reactive enough to be relevant. What further development could be applied in order to perform a future season.

text: Performing Femininity. Carmen - Good Ship Lollipop: A solo performance In the tradition of queer fringe theatre, Carmen - Good Ship Lollipop: a solo performance was written by a queer playwright, with a queer message for a queer audience.  The play was devised by drawing on Queer Theatre practice and methodology.
The following thesis details the process I undertook to create Carmen - Good Ship Lollipop: a solo performance. The story was created using biographical content already in the public arena. The play is about the public life of the late Carmen Rupe, New Zealand’s most famous transsexual. 
A historical perspective of men performing as women, or more fittingly, femininity performed by those other than female is presented by drawing on literature of this genre. The place of the solo performer and the combined roles of the actor, director, and producer are explored. Definitions of queer theatre and female impersonation are presented and issues of imitation, innovation and authenticity discussed.
The first methodology section details the choice of the particular playtext, the scriptwriting process, and dramaturgical analysis of Carmen – Good Ship Lollipop: a solo performance 
The second methodology section details the ‘script to stage’ production process. The development of the rehearsal script and the decision to limit the rehearsal period to one week is discussed. The plays evolution in terms of style and structure is presented.
The conclusion analyses the final product: to what extent Carmen - Good Ship Lollipop: a solo performance is faithful the Queer Theatre genre, successful as a performance piece, and reactive enough to be relevant. What further development could be applied in order to perform a future season.

year: 2013