Allelopathy And Weed Competition

Currently, only two herbicides, Londax® (bensulfuron) and Taipan® (benzofenap) are available for the effective control of all four major broadleaf weeds infesting NSW rice paddocks. Prolonged and widespread use of these two herbicides in the rice growing regions increases the threat of herbicide resistance. The low likelihood of new herbicides in the foreseeable future increases the impact of herbicide resistance on the Australian rice industry. Allelopathy, chemical interactions between plants, is an alternative control option. Weeds could be controlled by using crops which have been developed to exert their own weed control by releasing chemicals into the soil. These naturally occurring compounds could play a valuable role in an integrated weed management system, potentially reducing the amount of synthetic herbicides required for weed control. In rice, the potential use of allelopathy in weed control has been explored by several researchers worldwide. Funding for work on allelopathic potential was provided by the Rice CRC as they recognised that the Australian weed community is very different and many of the weeds infesting rice paddocks are typically Australian problems not likely to be tackled by international research groups. Twenty-seven rice cultivars were examined in the laboratory for their allelopathic potential against several currently important and potentially important rice weeds in Australia, namely barnyard grass (Echinochloa crus-galli), dirty dora (Cyperus difformis), lance-leaved water plantain (Alisma lanceolatum), starfruit (Damasonium minus), arrowhead (Sagittaria montevidensis) and S. graminea. Weed root growth inhibition ranged from 0.3 % to 93.6 % of the control depending on the cultivar and the weed species being tested. One weed was actually stimulated by Langi. Several rice varieties significantly inhibited root growth of more than one weed. A field trial using starfruit as the test species was conducted to see if those cultivars which inhibited starfruit in the laboratory experiment also inhibited starfruit in the field and to determine whether allelopathy was an important factor in the resulting field performance. Twenty-four cultivars were used in a field trial based at the Yanco Agricultural Institute. Starfruit dry matter was measured as an indicator of weed inhibition. It was found that there was a correlation between laboratory and field results, and that allelopathy was an important contributor to field performance of a rice variety

Race, racialisation and ‘colonial common sense’ in capital cases of men of colour in England and Wales, 1919-1957

This article explores the role of ‘colonial common sense’ (Stoler, 2008) in racialising men of colour in capital cases in twentieth-century England and Wales. Following the First World War psychiatric and psychological discourses became more prominent in both the criminal justice system and the wider culture, but were not the primary means through which race was constructed in capital trials. Rather, colonially informed common sense understandings of racial difference were more significant and were themselves an aspect of medical expertise, such as prison medicine. The article discusses cases such as Djang Djin Sung, the first man of colour to be executed in England after the First World War, Lock Ah Tam, who was hanged in 1926 despite benefiting from a well-funded insanity defence and Eric Dique, who murdered his girlfriend in 1956. Analysis of cases of men of colour sentenced to death in this period contributes to uncovering the history of racism in the criminal justice system

Race, Racialisation and the Death Penalty in England and Wales, 1900-1965

This poster will outline a new Leverhulme funded project, Race, Racialisation and the Death Penalty, 1900-1965. This is the first study to focus on issues of racial discrimination and racialisation in relation to capital punishment in England and Wales, 1900-65. Black and other minority ethnic (BME) people were starkly overrepresented in relation to the application of the death penalty during this period. This requires further investigation in order to understand the role of colonialism in shaping penal culture and practices of punishment in twentieth-century England and Wales, and in providing much needed historical context to the continued overrepresentation of BME people in the criminal justice system

A preliminary report on the awareness and knowledge of seafood-borne parasitic diseases among medical doctors in Australia

Despite the increasing popularity of seafood in Australia and various reports of infection with transmissible parasites in Australian edible aquatic animals such as fish, the number of reported cases of human infections in the country is low. This raised the question that Australian medical doctors may not be fully aware of the presence of these parasites in Australia, which in turn can lead to misdiagnosis of infections. This also may lead to an underestimation of the risk seafood-borne parasites may pose to public health. This preliminary study was conducted to determine the awareness and level of knowledge among Australian medical practitioners in New South Wales, the most populated and multicultural state in Australia, about seafood-borne parasitic diseases. Medical doctors, both general practitioners and gastroenterologists, were surveyed through an anonymous questionnaire (n = 376). Although the response rate was low at 11%, participants represented a diverse group in terms of gender, age, nationality and expertise. Despite several publications on occurrence of zoonotic parasites in Australian fish and other edible aquatic animals, and also in humans in the country, all respondents said no seafood-borne parasite had been reported as being seen within Australian or overseas practice. Although, due to low response rate, we are unable to confidently comment on the level of awareness, the findings of this study clearly suggest that further research is needed to investigate the extent of unawareness among Australian medical doctors about these highly important parasites and understanding the underlying issues in medical education that lead to the unawareness

What influences trainee decisions to practise in rural and regional Australia?

Although international medical graduates (IMGs) make up a substantial part of the Australian rural general practice workforce, most research on factors associated with rural practice has focused on Australian medical graduates (AMGs). This study aimed to determine whether there were differences between IMGs and AMGs in terms of these factors. Registrars in training and recent fellows (Fellowship of the Royal Australian College of General Practitioners/ Fellowship of the Australian College of Rural and Remote Medicine) who participated in training in rural and regional Australia were surveyed about practice models and rural practice. Almost two-thirds of participants were practicing or intending to practice in rural areas, with no difference between AMGs and IMGs. None of the variables associated with rural practice for AMGs was found to be associated with rural practice in IMGs in univariate binary regression analysis. Two key variables that are strongly associated with rural medical practice in the current literature, namely rural background and rural exposure, were not significant predictors of rural practice among IMGs. Due to the significant number of IMGs in regional training programs, any future incentives designed to improve rural recruitment and retention need to address factors relevant to IMGs

Accuracy of multiparametric magnetic resonance imaging to detect significant prostate cancer and index lesion location

Background: Multiparametric magnetic resonance imaging (mpMRI) of the prostate appears to improve prostate cancer detection, but studies comparing mpMRI to histopathology at the time of radical prostatectomy (RP) are lacking. This retrospective study determined the accuracy of mpMRI predicting Gleason score and index lesion location at the time of RP, the current gold standard for diagnosis. Methods: Between April 2013 and April 2016, a database of all men aged more than 40 years who underwent RP after positive transrectal ultrasound biopsy by an experienced urological surgeon was collated at a single regional centre. This was cross‐referenced with a database of all men who had mpMRIs performed at a single centre and reported according to Prostate Imaging Reporting and Data System (PI‐RADS version 1) during this period to generate a sample size of 64 men. A Spearman\u27s rho test was utilized to calculate correlation. Results: Median age of patients was 64 years, the median prostate‐specific antigen at RP was 6.22 ng/mL. mpMRI was positive (≥PI‐RADS 3) in 85.9% of patients who underwent RP. More than 92% of participants had Gleason ≥7 disease. A positive relationship between mpMRI prostate PI‐RADS score and RP cancer volume was demonstrated. An anatomical location correlation calculated in octants was found to be 89.1% accurate. Conclusion: mpMRI accurately detects prostate cancer location and severity when compared with gold standard histopathology at the time of RP. It thus has an important role in planning for future prostate biopsy and cancer treatment

Case series of elective instrumented posterior lumbar spinal fusions demonstrating a low incidence of venous thromboembolism

Introduction: Venous thromboembolism (VTE) is a significant cause of morbidity and mortality in orthopaedic surgery. While specific guidelines exist for hip and knee arthroplasty, there is wide variation in VTE prophylaxis in complex spinal surgery. This study sought to determine the incidence of VTE, and risk factors associated with VTE, in patients undergoing elective instrumented posterior lumbar spinal fusion. Methods: In a single-centre case series study, 107 consecutive patients undergoing elective lumbar spinal fusion were evaluated for VTE by lower limb duplex ultrasonography and/or clinical observation, and where indicated, computed tomography pulmonary angiogram (CTPA). The Caprini model for thrombosis risk factor assessment was retrospectively applied to grade levels of VTE risk, which were compared with overall VTE incidence. Results: All patients were operated on a spinal frame and received mechanical prophylaxis (thromboembolic deterrent stockings and sequential calf-compression devices). Thirty-seven percent also received chemoprophylaxis with low molecular weight heparin (LMWH). There was no significant relationship between LMWH use and protection from VTE. Risk scores ³3 (high/highest risk categories) were observed in 96.2% of patients. Four (3.7%) patients encountered a VTE complication (all with no chemoprophylaxis), either deep vein thrombosis (1.9%) or pulmonary embolism (1.9%). No patient sustained an epidural haematoma. Conclusion: Although patients undergoing elective instrumental posterior lumbar spinal fusion are at high risk of developing VTE, the actual incidence of VTE in these patients is low. Our data support the use of mechanical prophylaxis with thromboembolic deterrent stockings and sequential calf-compression devices to prevent VTE in these patients

Improving the management and care of refugees in Australian hospitals: A descriptive study

Objectives: The aim of the study was to investigate healthcare provider perceptions of the impact of refugee patients at two public hospitals, one rural and one urban, in designated refugee resettlement areas. Healthcare professionals’ views regarding improvements that could be made in this area were also sought. Methods: Two page anonymous questionnaires containing demographic, quantitative and open-ended questions were distributed to 150 healthcare providers at each research site. Results: Response rates were 50% and 49% at the rural and urban sites respectively. Refugees were seen at least monthly by 40% of the respondents. Additional support was requested by 70% of respondents. Confidence was associated with being born overseas (p=0.029) and increased time working with refugees (rs=0.418, p\u3c0.001). Only 47% of respondents felt confident managing social and psychological needs of refugees. Midwives saw refugees more than nursing and allied healthcare staff combined and this was significant at the rural hospital (p\u3c0.001). Rural respondents reported that working with refugees enhanced their practice (p=0.025), although felt significantly less confident (p\u3c0.001) than urban respondents. Themes that arose regarding barriers to care included: language and cultural barriers, paucity of knowledge and issues accessing available services including appropriate interpreters, Medicare eligibility and patient factors including lack of patient trust in government systems. Desire for support was more pronounced in the rural setting (p=0.001). Conclusions: Refugees were seen frequently in both settings and most respondents requested additional support highlighting that caring for refugees in Australian hospitals is a significant challenge. Additional support and education should be targeted to those helping refugees most frequently, particularly midwifery services, to reduce barriers to care

Birthing in regional Australia: Women\u27s decision making surrounding birthplace

Objective Although there is some research on women’s choice of birthplace, most of this research has been conducted overseas. This study explored factors influencing the decision to use public or private maternity services within regional Australia. Methods This cross-sectional study consisted of a community-based, anonymous, online questionnaire focused on factors influencing a woman’s choice of birth location and included adult females who had given birth in the past 2 years within two regional areas. Descriptive statistics were used to analyse demographic characteristics and factors influencing decisions regarding birthplace. Pearson’s Chi-squared test was used to compare public and private births for multiple variables. Binary logistic regression was used to determine the odds ratio for each potential factor based on whether participants with private health insurance (PHI) elected to birth in the public or private regional hospitals. Open coding was used to group responses to open ended questions into themes. Results Data from 510 questionnaires were analysed. The three most frequently reported factors influencing a woman’s decision about birthplace were financial reasons, the ability to choose their doctor and not having PHI. Women with PHI who opted for birth in the public system were almost four-fold more likely to select access to intensive care services and 2.6-fold more likely to select a preference for a low-intervention birth as one of their top five most influential factors. The results highlight that women want access to midwifery continuity of care. Conclusion This study provides insights into the factors influencing a woman’s complex decision about where and with whom to birth and how health insurance affects that decision, an area where there is a paucity of peer-reviewed literature. This research highlights the importance of being able to choose one’s doctor and the desire for access to midwife-led models of care, and provides evidence to advocate for improved access to additional models of care in the private sector. What is already known? The viability of regional private maternity hospitals is in question because, once the birth rate goes below a certain threshold, providing private obstetric service becomes unviable. Closure of regional private hospitals means less choice in regional areas. Minimal information is available about the factors influencing a woman with PHI to give birth in the public system, and much of the evidence is anecdotal. What does this paper add? This study provides insight into how PHI status and other factors influence a woman’s decision to birth in the public versus private sector, an area where there is a paucity of peer-reviewed literature. It also highlights a desire from women for access to midwifery continuity of care in the private system. What are the implications for practitioners? This research provides evidence to advocate for improved access to additional models of care, especially for midwifery-led care in the private sector

Climate emergency summit III:nature-based solutions report

An RSGS & SNH report from the Climate Summit held in April 2020"The Climate Emergency is the result of burning fossils fuels and changes in the way we use the land that short-circuit global carbon and nitrogen cycles. To remain within safe climate limits (1.5-2°C), the remaining carbon budget for all people, and for all time, is now so small that stopping fossil fuel use, while essential, will not by itself address the problem. Changing the way we use the land and sea is now essential. Nature-based solutions are vital to creating a safe operating space for humanity. "Extract from the foreword by Dr Clive Mitchell, Outcome Manager: People and Nature, Scottish Natural Heritage. The report has 45 contributors for a variety of institutions