title: Effect of deer velvet on sexual function in men and their partners: A double-blind, placebo-controlled study

authors: Conaglen, Helen M.

subjects: sexual function

abstract: The use of alternative medicines and herbal remedies is an increasing trend in Western societies. For years, people have taken products made of deer velvet for their alleged beneficial effects on sexual function. There has been no scientific investigation of the effects of deer velvet powder on the sexual functioning of human males. This study investigated sexual function in men during a 12-week double-blind, placebo-controlled trial of deer velvet. Thirty-two volunteer male participants, aged 45–65 years, and their partners, were randomly assigned to either the deer velvet or placebo study group. The males took capsules containing ground deer velvet or placebo everyday for 12 weeks. Two sexual function questionnaires (the International Index of Erectile Function and the Brief Index of Sexual Function for Women) used at pre- and posttreatment assessed changes in sexual functioning in males and their partners. Blood tests at baseline, and end of study, determined levels of sex-related hormones in male participants. There were no significant differences in the sexual behavior of the men taking deer velvet compared with the men taking placebo capsules. There were no significant hormone changes from baseline to the end of the study in either group of men. We conclude that in normal males there was no advantage in taking deer velvet to enhance sexual function. All alternative health products or nutritional supplements should be subjected to randomized placebo-controlled trials to determine efficacy.

text: Effect of deer velvet on sexual function in men and their partners: A double-blind, placebo-controlled study The use of alternative medicines and herbal remedies is an increasing trend in Western societies. For years, people have taken products made of deer velvet for their alleged beneficial effects on sexual function. There has been no scientific investigation of the effects of deer velvet powder on the sexual functioning of human males. This study investigated sexual function in men during a 12-week double-blind, placebo-controlled trial of deer velvet. Thirty-two volunteer male participants, aged 45–65 years, and their partners, were randomly assigned to either the deer velvet or placebo study group. The males took capsules containing ground deer velvet or placebo everyday for 12 weeks. Two sexual function questionnaires (the International Index of Erectile Function and the Brief Index of Sexual Function for Women) used at pre- and posttreatment assessed changes in sexual functioning in males and their partners. Blood tests at baseline, and end of study, determined levels of sex-related hormones in male participants. There were no significant differences in the sexual behavior of the men taking deer velvet compared with the men taking placebo capsules. There were no significant hormone changes from baseline to the end of the study in either group of men. We conclude that in normal males there was no advantage in taking deer velvet to enhance sexual function. All alternative health products or nutritional supplements should be subjected to randomized placebo-controlled trials to determine efficacy.

year: 2003

title: The temperature optima of enzymes: a new perspective on an old phenomenon

authors: Daniel, Roy M.

subjects: temperature optima

abstract: Careful analysis of the dependence of enzyme activity on assay temperature has revealed that some enzymes might have real temperature optima in which the decrease in catalytic rate at temperatures above the optimum is not primarily a result of irreversible thermal inactivation. The ‘equilibrium model’ has been formulated to describe genuine temperature optima, and to suggest a simple experimental method by which to distinguish these cases from those in which enzyme instability is the major determinant of temperature optima.

text: The temperature optima of enzymes: a new perspective on an old phenomenon Careful analysis of the dependence of enzyme activity on assay temperature has revealed that some enzymes might have real temperature optima in which the decrease in catalytic rate at temperatures above the optimum is not primarily a result of irreversible thermal inactivation. The ‘equilibrium model’ has been formulated to describe genuine temperature optima, and to suggest a simple experimental method by which to distinguish these cases from those in which enzyme instability is the major determinant of temperature optima.

year: 2001-04

title: Culture and climate change: A study of future-proofing Māori tourism businesses

authors: Tawhai, Crystal Candace

subjects: culture

abstract: This thesis explores how prepared Māori tourism businesses are to adapt to climate change and how Māori values may influence the business's perception of responses to climate change. As climate impacts are growing in New Zealand, as a result of increasing extreme weather events, how can Māori tourism businesses protect their taonga (resources)? Taonga in the context of this study includes Māori values, lands, seas and their businesses. Furthermore, the literature indicates that Māori tourism significantly contributes to the economic, social and cultural wellbeing for Māori and wider New Zealand (NZ Māori Tourism, 2018). 
At a specific level, the study focuses on three Māori tourism businesses. Two of the businesses are North Island-based whānau-owned enterprises, one on Kāpiti Island and the other in Napier. The third is a hapū-owned business located in Kaikoura in the South Island. Drawing on kaupapa Māori frameworks built on Māori struggles for tino rangatiratanga and mana motuhake (self-determination), the study adheres to kaupapa Māori principles of carrying out research by Māori to benefit Māori. The primary data for the study was collected through semi-structured interviews with each of the businesses, taking care to ensure the cultural safety of the participants and using appropriate tikanga (protocol) in each interview. 

The findings of the study show that Māori tourism businesses are adapting to environmental changes but are unsure about the pace of climate change. The uncertainties are due to a lack of access to information and competing priorities within their businesses. The research also shows how decisions made by local government as well as business perceptions of local and central government institutions negatively impacts on the ability of businesses to adapt to climate change. While there were differences in the businesses’ treatment of science and scientific information, all of them prioritised Māori cultural values. Significantly, these values underpin all the activities of the businesses, including, environmental enhancement and protection. An emphasis on Māori values in facilitated partnerships between tourism businesses, government bodies, and other community stakeholders on co-designing climate change adaptation strategies can help the tourism sector to prepare for a changing climate.

text: Culture and climate change: A study of future-proofing Māori tourism businesses This thesis explores how prepared Māori tourism businesses are to adapt to climate change and how Māori values may influence the business's perception of responses to climate change. As climate impacts are growing in New Zealand, as a result of increasing extreme weather events, how can Māori tourism businesses protect their taonga (resources)? Taonga in the context of this study includes Māori values, lands, seas and their businesses. Furthermore, the literature indicates that Māori tourism significantly contributes to the economic, social and cultural wellbeing for Māori and wider New Zealand (NZ Māori Tourism, 2018). 
At a specific level, the study focuses on three Māori tourism businesses. Two of the businesses are North Island-based whānau-owned enterprises, one on Kāpiti Island and the other in Napier. The third is a hapū-owned business located in Kaikoura in the South Island. Drawing on kaupapa Māori frameworks built on Māori struggles for tino rangatiratanga and mana motuhake (self-determination), the study adheres to kaupapa Māori principles of carrying out research by Māori to benefit Māori. The primary data for the study was collected through semi-structured interviews with each of the businesses, taking care to ensure the cultural safety of the participants and using appropriate tikanga (protocol) in each interview. 

The findings of the study show that Māori tourism businesses are adapting to environmental changes but are unsure about the pace of climate change. The uncertainties are due to a lack of access to information and competing priorities within their businesses. The research also shows how decisions made by local government as well as business perceptions of local and central government institutions negatively impacts on the ability of businesses to adapt to climate change. While there were differences in the businesses’ treatment of science and scientific information, all of them prioritised Māori cultural values. Significantly, these values underpin all the activities of the businesses, including, environmental enhancement and protection. An emphasis on Māori values in facilitated partnerships between tourism businesses, government bodies, and other community stakeholders on co-designing climate change adaptation strategies can help the tourism sector to prepare for a changing climate.

year: 2020