The Life Cycle Assessment of Cyanide Containers in Ghana

As a precious metal gold has been valued by humanity from time immemorial. Today gold is turned into gold bars forming the basis of the World’s international monetary system. When complexed in ore gold needs to undergo metallurgical extraction processes to eliminate unwanted ions before being smelted and used as the metal. Cyanide is used during these metallurgical processes. The economy of the West African country of Ghana relies heavily on gold production for its economic sustainability. Most of the gold mining companies in Ghana have international origins and receive most of their input for gold extraction from international sources. Sodium cyanide is imported into Ghana in  wooden intermediate bulk containers for further distribution to the mining companies. A life cycle assessment was completed to determine the burden that this packaging, which includes the wooden intermediate bulk container, a polyethylene liner and a polypropylene liner places on the environment when they are disposed. The International Organisation of Standardisation (ISO) 14040 management standard was used as a methodological framework in which the goal and scope was defined, a life cycle inventory and life cycle impact assessment was conducted. This enabled the most important issues to be identified. In the final phase consistency, completeness and sensitivity tests were completed and the results interpreted.

Safety intelligence : An exploration of senior managers' characteristics

Peer reviewedPostprin

Interdisciplinary communication in the intensive care unit

Background. Patient safety research has shown poor communication among intensive care unit (ICU) nurses and doctors to be a common causal factor underlying critical incidents in intensive care. This study examines whether ICU doctors and nurses have a shared perception of interdisciplinary communication in the UK ICU. Methods. Cross-sectional survey of ICU nurses and doctors in four UK hospitals using a previously established measure of ICU interdisciplinary collaboration. Results. A sample of 48 doctors and 136 nurses (47% response rate) from four ICUs responded to the survey. Nurses and doctors were found to have differing perceptions of interdisciplinary communication, with nurses reporting lower levels of communication openness between nurses and doctors. Compared with senior doctors, trainee doctors also reported lower levels of communication openness between doctors. A regression path analysis revealed that communication openness among ICU team members predicted the degree to which individuals reported understanding their patient care goals (adjR2 = 0.17). It also showed that perceptions of the quality of unit leadership predicted open communication. Conclusions. Members of ICU teams have divergent perceptions of their communication with one another. Communication openness among team members is also associated with the degree to which they understand patient care goals. It is necessary to create an atmosphere where team members feel they can communicate openly without fear of reprisal or embarrassment

Assessing the sustainability reporting of selected tourism companies listed on the Johannesburg Stock Exchange (JSE)

Abstract Implementing corporate sustainability reporting as part of companies' annual reports is a requirement in South Africa and throughout the world. The King III code strongly encourages Johannesburg Stock Exchange (JSE) listed companies to integrate their environmental, social and economic practices into their annual reporting. The purpose of this study was to investigate the sustainability reporting practices of three selected tourism companies listed on the JSE namely: Sun International, City Lodge and Wilderness Holdings. Three evaluation frameworks were developed from 1) the Global Reporting Initiative (GRI: G3.1); 2) the JSE: Social Responsible Investment (SRI) Index criteria; and 3) the South African National Standard for Responsible Tourism (SANS 1162) criteria. The three evaluation frameworks were used as a tool to assess the tourism companies' annual reports. Using these frameworks provided a way of assessing the extent of sustainability reporting within annual reports and allowed for comparison across companies and years. Overall, the study provided an understanding of how the selected companies had been producing their annual reports from 2010 to 2012. The study also provided feedback on the companies' previous reporting practices in terms of the sustainability criteria and provided information on how these companies can improve their future sustainability reporting

Ethics, Justice and the South African Environment

Exam paper for second semester: Ethics, Justice and the South African Environmen

Correction: Delayed Goblet Cell Hyperplasia, Acetylcholine Receptor Expression, and Worm Expulsion in SMC-Specific IL-4Rα–Deficient Mice

Interleukin 4 receptor alpha (IL-4Ralpha) is essential for effective clearance of gastrointestinal nematode infections. Smooth muscle cells are considered to play a role in the type 2 immune response-driven expulsion of gastrointestinal nematodes. Previous studies have shown in vitro that signal transducer and activator of transcription 6 signaling in response to parasitic nematode infection significantly increases smooth muscle cell contractility. Inhibition of the IL-4Ralpha pathway inhibits this response. How this response manifests itself in vivo is unknown. In this study, smooth muscle cell IL-4Ralpha-deficient mice (SM-MHC(Cre)IL-4Ralpha(-/lox)) were generated and characterized to uncover any role for IL-4/IL-13 in this non-immune cell type in response to Nippostrongylus brasiliensis infection. IL-4Ralpha was absent from alpha-actin-positive smooth muscle cells, while other cell types showed normal IL-4Ralpha expression, thus demonstrating efficient cell-type-specific deletion of the IL-4Ralpha gene. N. brasiliensis-infected SM-MHC(Cre)IL-4Ralpha(-/lox) mice showed delayed ability to resolve infection with significantly prolonged fecal egg recovery and delayed worm expulsion. The delayed expulsion was related to a delayed intestinal goblet cell hyperplasia, reduced T helper 2 cytokine production in the mesenteric lymph node, and reduced M3 muscarinic receptor expression during infection. Together, these results demonstrate that in vivo IL-4Ralpha-responsive smooth muscle cells are beneficial for N. brasiliensis expulsion by coordinating T helper 2 cytokine responses, goblet hyperplasia, and acetylcholine responsiveness, which drive smooth muscle cell contractions

Common carp (Cyprinus carpio L.) alters its feeding niche in response to changing food resources: direct observations in simulated ponds

We used customized fish tanks as model fish ponds to observe grazing, swimming, and conspecific social behavior of common carp (Cyprinus carpio) under variable food-resource conditions to assess alterations in feeding niche. Different food and feeding situations were created by using only pond water or pond water plus pond bottom sediment or pond water plus pond bottom sediment and artificial feeding. All tanks were fertilized twice, prior to stocking and 2 weeks later after starting the experiment to stimulate natural food production. Common carp preferred artificial feed over benthic macroinvertebrates, followed by zooplankton. Common carp did not prefer any group of phytoplankton in any treatment. Common carp was mainly benthic in habitat choice, feeding on benthic macroinvertebrates when only plankton and benthic macroinvertebrates were available in the system. In the absence of benthic macroinvertebrates, their feeding niche shifted from near the bottom of the tanks to the water column where they spent 85% of the total time and fed principally on zooplankton. Common carp readily switched to artificial feed when available, which led to better growth. Common carp preferred to graze individually. Behavioral observations of common carp in tanks yielded new information that assists our understanding of their ecological niche. This knowledge could be potentially used to further the development of common carp aquaculture

Being human: how does the personal experience of participating in encounter groups support the development and practice of the encounter facilitator?

The aim of this paper is to offer a definition of encounter and encounter groups based on the author’s understanding and experience as a participant and facilitator. Through reflection on experience as a participant, consideration is given to how the self-awareness and insights gained from this can shape the understanding of the role of facilitator, and how it enables what can be offered to groups as a facilitator. Theoretical contributions to understanding the role of the facilitator are considered. A strong relationship is proposed between experiences and gains as a participant and becoming an aware and helpful facilitator, arguing that experiences as a participant have the potential to contribute to the ability to trust both oneself and the facilitative potential of the group, tolerate uncertainty, hear others accurately and take risks