30 research outputs found

    Concept of Viscous Heating to Reinvent the Toilet

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    Highly viscous substances, such as feces, produce significant heat when layer deformation occurs. We describe the use of viscous heating to destroy disease-causing microorganisms and whipworms in feces using a small amount of power. The laboratory-scale unit has a rotating central core with a space between a fixed shell wall. Viscous heating of feces proved effective for disinfection. Data were obtained over a range of operating conditions with simulant materials. In addition, baboon feces were tested for parasite destruction. For simulants, the temperature observed with the smallest spacing approached 200�C. Baboon feces showed 99% destruction of Trichuris trichiura as a result of shear stress only because temperature was limited as a result of hair in samples. Vegetable dye passed through the reactor demonstrated plug flow. Alternative geometries, such as two rotating parallel disks, a solid sphere inside another hollow sphere could be considered for high-volume sludge processing. Design variations include spreading the output mass into a thin layer for efficient water evaporation and recovery. Since the process can sterilize fecal mass, other treatment technologies should consider integrating viscous heating into their process streams.Chemical Engineerin

    An Unusual Complication of Suprapubic Catheter Insertion

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    A patient who had a small bowel mesentery perforation following insertion of a suprapubic catheter (SPC) is described. He had no bowel complaints immediately following the procedure, but presented 10 weeks later with insidious onset bowel obstruction due to the kink caused by the catheter. This complication occurred despite cystoscopy control and adequate bladder distension prior to the procedure. This isolated case illustrates the fact that regardless of the ease and frequency of SPC insertion, complications do occur

    Profile of long COVID symptoms needing rehabilitation: a cross-sectional household survey of 12,925 SARS-CoV-2 cases between July and December 2021 in Bangladesh

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    Background and aims : It is important to determine the profile of long COVID (LC) symptoms within the scope of rehabilitation in Bangladesh. This study’s objective was to estimate the newly experienced long COVID symptoms needing rehabilitation by determining the prevalence and spectrum of impairments due to LC in Bangladesh. Methods A Cross-sectional household survey of 12,925 COVID-19 patients confirmed by RT-PCR from 24 testing facilities in Bangladesh. LC was diagnosed according to WHO working group definition. COVID-19 Yorkshire Rehabilitation Scale (C19-YRS) was used to determine the symptom responses, symptom severity, new long COVID symptoms, and scope of rehabilitation. Results The population proportion of LC symptoms requiring rehabilitation interventions are 0.22 [95% CI, 0.20–0.24] in Bangladeshi people diagnosed with SARS-CoV-2. Among them, 0.08 [95% CI, 0.07–0.09] had mild, 0.07 [95% CI, 0.06–0.09] had moderate, and 0.05 [95% CI, 0.04–0.06] had severe long COVID symptoms (LCS). There was a significant positive correlation between LCS and functional disabilities (r=0.889, p<0.001), while a negative correlation was observed between the severity of symptoms and overall health (r=-0.658, p<0.001). In comparison to the pre-COVID status, 17 new LCS were observed and the increase in the scope of rehabilitation intervention among LCS ranged between 0.01 [95% CI, 0.001–0.01] and 0.21 [95% CI, 0.19–0.22]. In Bangladesh, 59% (n=334) of the LC cases are out of reach for any rehabilitation interventions. Conclusion Nearly one-fourth of Bangladeshi Post-COVID-19 have long COVID (LC). Seventeen symptoms (LCS) were observed and more than half of the populations having long COVID are out of reach of any rehabilitation facilities

    The assessment of musculoskeletal disorders, quality of life, and comorbidities in older people in Bangladesh

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    Musculoskeletal disorders are debilitating conditions that significantly impact the state of health, especially in older people. The study, which employed a cross-sectional design and practical sampling, included 206 participants among them 124 (62.2%) were men and 82 (39.8%) were women, from all over Bangladesh with musculoskeletal issues of varying severity and impact. The mean age of the participants was 64.9 (SD 4.3). The study was carried out between January and June of 2022. The majority of participants experienced musculoskeletal pain. Back pain was the most commonly complained of symptom among the participants (74.9%). It was also common to have limited mobility as a result of arthritic change, which eventually affected daily activities like taking care of oneself. To improve the health of the older adult population, more studies must be conducted to identify the many factors that contribute to musculoskeletal issues. The development of effective prevention and rehabilitation programs must then be based on this knowledge

    A clinical study of arrhythmias associated with acute coronary syndrome: a hospital based study of a high risk and previously undocumented population

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    Background: ACS represents a global epidemic. Arrhythmia in ACS is common. Careful investigation may lead to further improvement of prognosis. Retrospectively analyzed the year- round data of our center. Study was undertaken to analyze the incidence, frequency and type of arrhythmias in ACS. This is to aid timely intervention and to modify the outcome. Identification of the type of arrhythmia is of therapeutic and prognostic importance.Methods: This cross sectional analytical study was conducted in the Department of Cardiology, Apollo Hospitals Dhaka, from January 2019 to January 2020 with ACS patients. Enrolled consecutively and data analyzed.Results: There were 500 patients enrolled considering inclusion and exclusion criteria. Sample was subdivided into 3 groups on the type of ACS. Group-I with UA, Group-II with NSTE - ACS and Group-III with STE - ACS. Different types of arrhythmia noted. Types of arrhythmia were correlated with type of ACS. 500 patients included. Mean age 55.53±12.70, 71.6% male and 28.4% female. 60.4% hypertensive, 46.2% diabetic, 20.2% positive family history of CAD, 32.2% current smoker, 56.4% dyslipidaemic and 9.6% asthmatic. 31.2% UA, 39.2% NSTE-ACS and 29.6% STE-ACS. Type of arrhythmias noted. 22% sinus tachycardia, 20.2% sinus bradycardia, 9% atrial fibrillation, 5.2% ventricular ectopic, 4.8% supra ventricular ectopic, 2.8% bundle branch block, 2.2% atrio-ventricular block, 1% broad complex tachycardia, 0.4% narrow complex tachycardia, 0.2% sinus node dysfunction and 32.2% without any arrhythmia. Significant incidences of arrhythmia detected - respectively 29.8%, 39.2% and 31%, p<0.001.Conclusions: In conclusion, arrhythmias in ACS are common. More attention should be paid to improve their treatment and prognosis

    Ways of becoming : South Asian students in an Australian postgraduate environment

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    The formation of student diasporas in western universities is a manifestation of the globalization and internationalization of higher education, and has necessitated studies about international students’ adaptation to such universities. Statistics of the last decade show that there has been a significant flow of international students to Australian universities, and a large proportion of this student cohort comes from South East Asian and South Asian countries. Whilst there has been a good deal of research on international students from South East and Far East Asia, who share a Confucian Heritage Culture (CHC) background, there are relatively very few studies on South Asian students, particularly postgraduate students from India, Pakistan and Bangladesh (defined as South Asian for this study). This qualitative study about the adaptation experiences of postgraduate coursework students from South Asian countries fills some of the gap that exists in the body of literature about international students. The study, conducted at a cross-sectoral Australian university in Melbourne, referred to with the pseudonym Southern University (SU), has utilised a longitudinal qualitative approach to explore from an ‘emic’ perspective the adaptation experiences of ten postgraduate coursework students from India, Pakistan and Bangladesh. The students were studying in four faculties at SU, and participated in in-depth interviews and focus group discussions over their first two semesters. The study considers the students’ adjustment process in the Australian academic landscape from their pre-arrival expectations to their settlement after two semesters, and is structured to consider three phases of their experiences – initial, transitional and endpoint – in negotiating new academic norms and genres, including spoken communication. The study identifies a number of dimensions along which differences are evident in the students’ approaches and strategies in adjusting to their studies and lives as postgraduates. In academic adjustment, all the postgraduates demonstrated incremental progress which was marked by varying levels of perceptual and attitudinal changes in understanding the new academic culture. Whilst the students shared a common goal of undertaking an Australian postgraduate degree to enhance their employment prospects, two broad types of strategists emerged: initiators of self-development and system compliers. The study also notes that the postgraduates, through their physical presence in Australia and becoming qualified with a western education, negotiated new, hybrid and empowered identities for themselves. In its limited exploration about the students’ social acculturation, the study notes that some of them followed a selective integrative approach while others adopted assimilatory process, and they all indicated a hybrid state of acculturation to Australian culture. The study also uncovers that, besides their academic goals, many of the postgraduates had a largely hidden agenda of long term settlement in Australia

    Debt-repayment capacity and projected adjustments for irrigated farms with a declining water level in an area of the Texas High Plains

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    Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to [email protected], referencing the URI of the item.Not availabl
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