Experiment on an Integrated Ricefish Polyculture System (6 Species, 1- 2 fish/m2) in the Mekong Delta

Our ricefish polyculture (6 species) results at two stocking densities (1 and 2 fish/m2) show that: The water quality in a ricefish polyculture system, such as water temperature (29.1 – 29.0 °C), water pH (6.6 – 6.7), water transparency (18.0 – 20.8 cm), dissolved O2 (4.7 – 4.6 ppm), CO2 (22.8 – 23.1 ppm), COD (11.9 – 12.7 ppm), are similar at both densities and acceptable for the 6 tropical fish species. Ammonium and phosphorus concentrations are statistically higher at 1 fish/m2 (0.4 and 0.2 ppm). The primary productivity is similar for both densities (6.5 – 6.8 g O2/m3/day) and suitable for fish culture. The phytoplankton biodiversity is relatively high and at the same level for both treatments (74 – 63 taxa), but the densities of phytoplankton, of zooplankton, and the biomass of zoobenthos are lower at the highest density (2 fish/m2), probably due to a higher predation by fish.The fish yield (808 kg/ha) at 2 fish/m2 is higher than at 1 fish/m2 (482 kg/ha). The cost ratio benefit (1.84) and the cost ratio profit (1.81) for farm households at 1 fish/m2 are lower than those values at 2 fish/m2 (2.1 and 2.05 respectively). Regarding the aquaculture extension program, the model of the ricefish polyculture (6 species) system with the stocking density of 2 fish/m2 could be extended in the rice fields to improve farmer's income in the Mekong delta

Patients, health professionals, and the health system: Influencers on patients’ participation in ward rounds

Background: The ward round is an opportunity to plan and deliver patient-centered care. Benefits include an effective and safer clinician-patient relationship, patient empowerment, reduced anxiety and increased trust in the health care system. Factors contributing to patient involvement in ward rounds is shaped by their preferences, ability, and opportunity. Aim: To investigate ward rounds and the patient experience with them, the relationship between the patient and clinicians, and how rounds facilitate collaboration between them. Patients and methods: A multimethod study was conducted in a single Australian facility in acute medicine and rehabilitation specialties. An observational study of ward rounds in each setting was conducted with 14 patients, aged between 55 and 89 years followed by semi-structured interviews conducted with the patients observed. Descriptive and thematic analysis was undertaken. Results: One third of participants had not heard of the term ward round or could describe their purpose. Three main influencers on the patient experience of rounds were: self; the health system; and medical officers. No meaningful difference was found between patients in acute medicine and rehabilitation although all wanted to receive information from the senior medical officers. Patients more familiar with the health system were more active participants and took greater responsibility for their involvement in rounds and described higher satisfaction. Conclusion: There is a level of acceptance within the health system that patients understand what a ward round is. However, their role on the round is complex and this may only be developed through experiencing them. High system users teach themselves to navigate rounding processes to ensure their needs are met. To ensure equity in participation patients should be educated on ward rounds, what to expect and how to they can participate

How do interprofessional healthcare teams perceive the benefits and challenges of interdisciplinary ward rounds

Purpose: Interdisciplinary bedside ward rounds have the capacity to facilitate coordinated interprofessional patient care. To be an effective means of care coordination, clinicians need an explicit understanding of how these rounds contribute to patient care. By identifying benefits and challenges to the effective use of interdisciplinary ward rounds, clinicians create an opportunity to improve interprofessional teamwork, care planning, and coordination of patient care. Methods: A survey was conducted with frontline professionals in two acute care and two rehabilitation wards from a metropolitan teaching hospital. There were 77 participants, representing medical officers, nurses, and allied health clinicians. Questions examined the perceived benefits and challenges of conducting interdisciplinary ward rounds in their units. Survey findings were coded for meaning and then grouped into themes. Results: Benefits revealed a desired care delivery model challenged by the complexities of organizational and professional cultures. The themes of “being on the same page”, “focusing on patients”, and “holistic care planning” underpinned the ideas of collaboration and improved patient-centred care, that is, benefits to patients. Challenges centred on health professionals' time constraints and the coordination of teams to enable participation in rounds. The themes were more distinct, logistical barriers of “time”, “workforce”, and “care planning”. Conclusion: Overall, clinicians recognise there are greater benefits to IBRs and have a willingness to participate. However, careful consideration is required to introduce and continually achieve the best from IBR as they require changes in organizational context and culture

Process evaluation of a behaviour change approach to improving clinical practice for detecting hereditary cancer

© 2019 The Author(s). Background: This retrospective process evaluation reports on the application of a 1-year implementation program to increase identification and management of patients at high risk of a hereditary cancer syndrome. The project used the Theoretical Domains Framework Implementation (TDFI) approach, a promising implementation methodology, used successfully in the United Kingdom to address patient safety issues. This Australian project run at two large public hospitals aimed to increase referrals of patients flagged as being at risk of Lynch syndrome on the basis of a screening test to genetic services. At the end of the project, the pathologists' processes had changed, but the referral rate remained inconsistent and low. Methods: Semi-structured interviews explored participants' perceptions of the TDFI approach and Health services researchers wrote structured reflections. Interview transcripts and reflections were coded initially against implementation outcomes for the various TDFI approach activities: acceptability, appropriateness, feasibility, value for time cost, and adoption. On a second pass, themes were coded around challenges to the approach. Results: Interviews were held with nine key project participants including pathologists, oncologists, surgeons, genetic counsellors and an administrative officer. Two health services researchers wrote structured reflections. The first of two major themes was 'Theory-related challenges', with subthemes of accessibility of theory underpinning the TDFI, commitment to that theory-based approach, and the problem of complexity. The second theme was 'Practical challenges' with subthemes of stakeholder management, navigating the system, and perceptions of the problem. Health services researchers reflected on the benefits of bridging professional divides and facilitating collective learning and problem solving, but noted frustrations around clinicians' time constraints that led to sparse interactions with the team, and lack of authority to effect change themselves. Conclusions: Mixed success of adoption as an outcome was attributed to the complexity and highly nuanced nature of the setting. This made identifying the target behaviour, a key step in the TDFI approach, challenging. Introduced changes in the screening process led to new, unexpected issues yet to be addressed. Strategies to address challenges are presented, including using an internal facilitator with a focus on applying a theory-based implementation approach

New Experimental Limits on Macroscopic Forces Below 100 Microns

Results of an experimental search for new macroscopic forces with Yukawa range between 5 and 500 microns are presented. The experiment uses 1 kHz mechanical oscillators as test masses with a stiff conducting shield between them to suppress backgrounds. No signal is observed above the instrumental thermal noise after 22 hours of integration time. These results provide the strongest limits to date between 10 and 100 microns, improve on previous limits by as much as three orders of magnitude, and rule out half of the remaining parameter space for predictions of string-inspired models with low-energy supersymmetry breaking. New forces of four times gravitational strength or greater are excluded at the 95% confidence level for interaction ranges between 200 and 500 microns.Comment: 25 Pages, 7 Figures: Minor Correction

Nurses' workarounds in acute healthcare settings: A scoping review

Background: Workarounds circumvent or temporarily 'fix' perceived workflow hindrances to meet a goal or to achieve it more readily. Behaviours fitting the definition of workarounds often include violations, deviations, problem solving, improvisations, procedural failures and shortcuts. Clinicians implement workarounds in response to the complexity of delivering patient care. One imperative to understand workarounds lies in their influence on patient safety. This paper assesses the peer reviewed empirical evidence available on the use, proliferation, conceptualisation, rationalisation and perceived impact of nurses' use of workarounds in acute care settings. Methods. A literature assessment was undertaken in 2011-2012. Snowballing technique, reference tracking, and a systematic search of twelve academic databases were conducted to identify peer reviewed published studies in acute care settings examining nurses' workarounds. Selection criteria were applied across three phases. 58 studies were included in the final analysis and synthesis. Using an analytic frame, these studies were interrogated for: workarounds implemented in acute care settings by nurses; factors contributing to the development and proliferation of workarounds; the perceived impact of workarounds; and empirical evidence of nurses' conceptualisation and rationalisation of workarounds. Results: The majority of studies examining nurses' workarounds have been published since 2008, predominantly in the United States. Studies conducted across a variety of acute care settings use diverse data collection methods. Nurses' workarounds, primarily perceived negatively, are both individually and collectively enacted. Organisational, work process, patient-related, individual, social and professional factors contribute to the proliferation of workarounds. Group norms, local and organisational culture, 'being competent', and collegiality influence the implementation of workarounds. Conclusion: Workarounds enable, yet potentially compromise, the execution of patient care. In some contexts such improvisations may be deemed necessary to the successful implementation of quality care, in others they are counterproductive. Workarounds have individual and cooperative characteristics. Few studies examine nurses' individual and collective conceptualisation and rationalisation of workarounds or measure their impact. The importance of displaying competency (image management), collegiality and organisational and cultural norms play a role in nurses' use of workarounds. © 2013 Debono et al.; licensee BioMed Central Ltd