title: Design and operation methods for better performing heat recovery loops

authors: Walmsley, Michael R.W.

abstract: Inter-plant integration via a heat recovery loop (HRL) is an economic method for increasing total site process energy efficiency of semi-continuous processes. Results show that both the constant storage temperature approach and variable storage temperature approach have merit. Depending on the mix of source and sink streams attached, it may be advantageous to change the operation of an existing HRL from a constant temperature storage to a variable temperature storage. To realise the full benefits of this change in operation, a redistribution of the existing heat exchanger area may be needed.

text: Design and operation methods for better performing heat recovery loops Inter-plant integration via a heat recovery loop (HRL) is an economic method for increasing total site process energy efficiency of semi-continuous processes. Results show that both the constant storage temperature approach and variable storage temperature approach have merit. Depending on the mix of source and sink streams attached, it may be advantageous to change the operation of an existing HRL from a constant temperature storage to a variable temperature storage. To realise the full benefits of this change in operation, a redistribution of the existing heat exchanger area may be needed.

year: 2012-09-23

title: Company formation in the Te Aroha mining district in the 1930s

authors: Hart, Philip

abstract: During the early years of the Depression, a few investors sought to form companies to rework almost every portion of the Te Aroha Mining District. Some flotations failed, and even when companies were formed very little work was done. A wide variety of people were promoters and investors, very few of whom had any mining knowledge or access to capital. Competition for ground and low commercial morality led to conflicts and exaggerated claims (notably that Te Aroha’s lodes were linked to Karangahake and Waihi). The Mines Department, anxious to prevent misinformation about these ventures being used to extract money from the gullible and also anxious to defend the industry from harm, was concerned about fraudulent assays and misleading reports from self-proclaimed ‘experts’. All these under-capitalized ventures quickly failed, for what little development took place quickly revealed the poverty of the ore.
These syndicates and companies are dealt with chronologically.

text: Company formation in the Te Aroha mining district in the 1930s During the early years of the Depression, a few investors sought to form companies to rework almost every portion of the Te Aroha Mining District. Some flotations failed, and even when companies were formed very little work was done. A wide variety of people were promoters and investors, very few of whom had any mining knowledge or access to capital. Competition for ground and low commercial morality led to conflicts and exaggerated claims (notably that Te Aroha’s lodes were linked to Karangahake and Waihi). The Mines Department, anxious to prevent misinformation about these ventures being used to extract money from the gullible and also anxious to defend the industry from harm, was concerned about fraudulent assays and misleading reports from self-proclaimed ‘experts’. All these under-capitalized ventures quickly failed, for what little development took place quickly revealed the poverty of the ore.
These syndicates and companies are dealt with chronologically.

year: 2016

title: Efficacy of an incentive intervention on secondary prophylaxis for young people with rheumatic fever: a multiple baseline study

authors: Oetzel, John G.

subjects: Science & Technology

abstract: Background
Acute rheumatic fever in New Zealand persists and is a barometer of equity as its burden almost exclusively falls on Māori and Pacific Island populations. The primary objective of this study is to determine whether an incentive programme will result in increased secondary prophylaxis injections over a one-year period compared to a baseline period prior to the intervention.

Methods
The evaluation used a multiple baseline study to determine whether an incentive consisting of a mobile phone and monthly “top-up” (for data/calls) resulted in increased injections, increased texts/calls with nurses, reduced number of visits to get a successful injection, less medicine wasted, and increased nurse satisfaction. Participants were 77 young people (aged 14–21) on an acute rheumatic fever registry in Waikato region, New Zealand classified as either fully adherent (all injections received and no more than one late) or partially adherent based on injections at baseline.

Results
There was a sharp increase in injections for intermittent patients post-intervention and then a slight decrease overtime, while fully adherent patients maintained their high rate of injections (p = .003). A similar pattern for nurse satisfaction emerged (p = .001). The number of calls/texts increased for all patients (p = .003). The number of visits went down for partially adherent patients and up for fully adherent patients (p = .012). The overall incremental cost-effectiveness was $989 per extra successful injection although costs increased sharply toward the end of the intervention.

Conclusions
Incentivising secondary prophylaxis appears to have a strong impact for partially adherent patients, particularly during the early periods following the initiation of the intervention. Enhancing communication with patients who returned to care may result in more sustainable adherence.

Trial registration
Retrospectively registered: Australia New Zealand Clinical Trials Registry ACTRN12618001150235, 12 July 2018.

text: Efficacy of an incentive intervention on secondary prophylaxis for young people with rheumatic fever: a multiple baseline study Background
Acute rheumatic fever in New Zealand persists and is a barometer of equity as its burden almost exclusively falls on Māori and Pacific Island populations. The primary objective of this study is to determine whether an incentive programme will result in increased secondary prophylaxis injections over a one-year period compared to a baseline period prior to the intervention.

Methods
The evaluation used a multiple baseline study to determine whether an incentive consisting of a mobile phone and monthly “top-up” (for data/calls) resulted in increased injections, increased texts/calls with nurses, reduced number of visits to get a successful injection, less medicine wasted, and increased nurse satisfaction. Participants were 77 young people (aged 14–21) on an acute rheumatic fever registry in Waikato region, New Zealand classified as either fully adherent (all injections received and no more than one late) or partially adherent based on injections at baseline.

Results
There was a sharp increase in injections for intermittent patients post-intervention and then a slight decrease overtime, while fully adherent patients maintained their high rate of injections (p = .003). A similar pattern for nurse satisfaction emerged (p = .001). The number of calls/texts increased for all patients (p = .003). The number of visits went down for partially adherent patients and up for fully adherent patients (p = .012). The overall incremental cost-effectiveness was $989 per extra successful injection although costs increased sharply toward the end of the intervention.

Conclusions
Incentivising secondary prophylaxis appears to have a strong impact for partially adherent patients, particularly during the early periods following the initiation of the intervention. Enhancing communication with patients who returned to care may result in more sustainable adherence.

Trial registration
Retrospectively registered: Australia New Zealand Clinical Trials Registry ACTRN12618001150235, 12 July 2018.

year: 2019