Effect of yarn hairiness on energy consumption in rotating a ring-spun yarn package

The effect of yarn hairiness on energy consumption when rotating a ring-spun yarn package is investigated theoretically and experimentally. A theoretical model is developed to calculate the energy required to rotate hair fibers, based on hair length and number as well as package speed and size. A single spindle test rig is used to verify the theoretical prediction. The experimental results confirm the theoretical prediction that the package power increases with increased yarn hairiness level and spindle speed.

Development, implementation, and evaluation of a continence education package in acute and subacute care settings

OBJECTIVE: The objective of the study was to trial and evaluate the effect that a discharge Continence Education Package (CEP) had on patients' continence awareness and management preferences.
DESIGN: An exploratory descriptive design was used.
SETTINGS AND SUBJECTS: A total of 631 participants were included in the study: 352 females (55.8%) and 279 males (44.2%) from 4 rural and regional settings in Victoria, Australia.
INSTRUMENTS AND METHODS: A specifically designed questionnaire was used to assess participants' knowledge of incontinence and its management and also to investigate their treatment preferences and intentions if they experienced this type of problem. Data were collected at 2 time periods. Specifically, patients were interviewed before discharge from acute and subacute settings identified as Time 1 (T1). Then the participants were given the CEP and asked to complete a similar questionnaire.
RESULTS: The findings revealed that fewer than 25% of participants had received information on continence before the study being conducted, yet the majority had indicated that they had experienced continence symptoms. The majority of participants found the CEP easy to understand (98.2%) and helpful (95.3%). Most participants said it provided them with information about types of actions to take and/or treatment options for incontinence problems. It also raised their awareness of the signs and symptoms associated with incontinence and provided them with a useful self-administered gauge with which to assess their continence status.
CONCLUSIONS: These findings suggest that the CEP may be a useful educational tool for use in the general population.

Effect of a self-directed learning package on emergency nurses` knowledge of assessment of oxygenation and use of supplemental oxygen

Abstract Emergency nurses frequently and independently make decisions regarding supplemental oxygen. The importance of these decisions for patients is highlighted by the well documented association between respiratory dysfunction and adverse events. This study aimed to: (i) examine the effect of educational preparation on emergency nurses' knowledge of assessment of oxygenation, and the use of supplemental oxygen; (ii) explore the impact of existing knowledge on decisions related to the implementation of supplemental oxygen; and (iii) explore nurses' characteristics that were associated with effectiveness of the educational preparation. A pretest/post-test, controlled, quasi-experimental design was used in this study. Educational preparation was effective in increasing emergency nurses' knowledge. Baseline level of knowledge was predictive of reports of independent decisions regarding the implementation of oxygen. There was a significant positive relationship between postgraduate qualification in emergency nursing and the effect of education, and significant negative relationships between effect of education and baseline level of knowledge and daily decisions to implement supplemental oxygen.

Use of complementary and alternative medicines by a sample of Australian women during pregnancy

Background: The use of complementary and alternative medicines (CAM) is growing in Australia, with women higher users than men. Yet, only a few Australian studies have explored the use of CAM during pregnancy.

Aims: To explore the use of CAM, the types of CAM practitioners consulted, physical symptoms/complaints for which CAM are used by a sample of pregnant Australian women, and women's perceptions of the efficacy of CAM in treating those complaints.

Methods: Three hundred and twenty-one pregnant women, who volunteered for a study exploring women's well-being during pregnancy, completed a self-report questionnaire in their late second/early third trimester.

Results: Seventy-three per cent of women had used at least one kind of complementary therapy in the prior eight weeks of pregnancy. Over one-third of the women had visited at least one alternative medicine practitioner during pregnancy. Approximately one-third of the women reported taking CAM to alleviate a specific physical symptom, with 95.7% of these women reporting they either got completely better or a little bit better with use of CAM; one quarter reported planning to use an alternative therapy to assist with labour preparation. Age, number of physical symptoms experienced, income level and level of education were not associated with greater use of CAM (P < 0.05); however, women reporting more physical symptoms were more likely to consult a CAM practitioner.

Conclusion: Findings highlight the substantial use of CAM during pregnancy and the need to have all health professionals adequately informed about such therapies during this life stage.

Disposition pathways and pharmacokinetics of herbal medicines in humans

Pharmacokinetic studies have become an integral part of modern drug development, but these studies are not regulatory needs for herbal remedies. This paper updates our current knowledge on the disposition pathways and pharmacokinetic properties of commonly used herbal medicines in humans. To retrieve relevant data, the authors have searched through computer-based literatures by full text search in Medline (via Pubmed), ScienceDirect, Current Contents Connect (ISI), Cochrance Library, CINAHL (EBSCO), CrossRef Search and Embase (all from inception to May 2010). Many herbal compounds undergo Phase I and/or Phase II metabolism in vivo, with cytochrome P450s (CYPs) and uridine diphosphate glucuronosyltransferases (UGTs) playing a major role. Some herbal ingredients are substrates of P-glycoprotein (P-gp) which is highly expressed in the intestine, liver, brain and kidney. As such, the activities of these drug metabolizing enzymes and drug transporters are determining factors for the in vivo bioavailability, disposition and distribution of herbal remedies. There are increasing pharmacokinetic studies of herbal remedies, but these studies are mainly focused on a small number of herbal remedies including St John's wort, milk thistle, sculcap, curcumin, echinacea, ginseng, ginkgo, and ginger. The pharmacokinetic data of a small number of purified herbal ingredients, including anthocyanins, berberine, catechins, curcumin, lutein and quercetin, are available. For the majority of herbal remedies used in folk medicines, data on their disposition and biological fate in humans are lacking or in paucity. For a herbal medicine, the pharmacological effect is achieved when the bioactive agents or the metabolites reach and sustain proper levels at their sites of action. Both the dose levels and fates of active components in the body govern their target-site concentrations after administration of an herbal remedy. In this regard, a safe and optimal use of herbal medicines requires a full understanding of their pharmacokinetic profiles. To optimize the use of herbal remedies, further clinical studies to explore their biological fate including the disposition pathways and kinetics in the human body are certainly needed.

Evaluation of the thermal behaviour of bevelled cutting inserts using a numerical approach

The nose geometry of a hard and brittle metal cutting tool is generally modified in order to avoid the premature failure due to fracture under tensile stresses. While most research findings point to a favourable mechanical load pattern, the possible influence of the shape of the geometry on the thermal fields and the consequent changes in the stressed state of the tool seem to have attained less attention. The present work aims at establishing the thermal behaviour of bevelled tools under varying geometrical and process parameters. Data generated from statistically designed experiments and quick-stop chip samples are coupled to conduct numerical investigations using a mixed finite and boundary element solution to obtain the temperature distribution in bevelled carbide inserts. Due consideration is given to the presence of the stagnation zone and its size and shape. While the cutting forces and temperatures increased owing to the blunt shape of the tool, the possible absence of tensile stresses was found to be the likely effect of a more uniform temperature distribution resulting from a significant plastic contact on the principal flank and the consequent flank heat source. The characteristic low-temperature zones close to the nose of the conventional tool are taken over by the stagnation zone in bevelled tools. © IMechE 2007.

The impact of a computerised consolidation accounting package (CCAP) on student performance

Purpose – The purpose of this paper is to investigate the association between the use of a computerised learning tool (specifically designed to teach consolidation accounting) and student performance in the final examination of an undergraduate accounting unit on Corporate Accounting.

Design/methodology/approach – A regression model was developed to analyse 1,103 observations of assignment and examination scores, collected over three semesters, to test the central proposition that computer assisted learning enhances student learning outcomes and performance in the exam.

Findings – The results show a positive and significant relationship between the computerised accounting assignment on consolidated accounting (linked to usage of the computerised tool) and the consolidation question in the final examination. The findings suggest that the computerised consolidation accounting package (CCAP) assists students to understand the concepts underpinning consolidation accounting.

Research limitations/implications – The data were collected from a single institution, which may not represent the population of accounting students. Due to ethical obligations, the study lacked a control group that would have allowed meaningful comparison and assessment of student performance. Furthermore, whilst the findings in this study were able to demonstrate a positive association between the CCAP and exam performance, it is unable to determine the quality and depth of the learning experience from using the CCAP.

Practical implications – The present study found that a CCAP and its usage has the potential to positively impact student performance on assessment tasks on subject matter similar to concepts contained the computer package. Such findings may encourage instructors to seek ways of incorporating learning technologies in the pedagogical design.

Originality/value – This is believed to be one the few papers that has exclusively studied the impact of a specific CCAP and a specific segment in accounting education (consolidation accounting) using direct measures, CCAP assignment score and the final examination score for a question dedicated to consolidation accounting.

Finding higher symmetries of differential equations using the MAPLE package DESOLVII

We present and describe, with illustrative examples, the MAPLE computer algebra package DESOLVII, which is a major upgrade of DESOLV. DESOLVII now includes new routines allowing the determination of higher symmetries (contact and Lie-Backlund) for systems of both ordinary and partial differential equations.

The politics of the pharmaceutical industry and access to medicines : world pharmacy and India

The Pharmaceutical Industry presents one of India’s most successful stories of economic expansion and improvements in public health. Indian firms have made access to quality medicines possible and affordable in many developing countries. Indian pharmaceuticals are also exported on a large scale to the United States and other highly regulated markets. A wave of mergers, acquisitions and tie-ups point to growing integration between Indian firms and global pharma multinationals.

The Politics of the Pharmaceutical Industry and Access to Medicines: World Pharmacy and India examines this important industry from different economic, social and political perspectives. Topics covered include the implications of TRIPS-compliant intellectual property rights, the role of flexibilities under TRIPS, the market regulation system, the role of Indian firms in exporting HIV/AIDS medications to Africa, the issue of free trade agreements, the power and reach of foreign pharmaceutical multinationals in India’s domestic market, and the sustainability of India as a major generics supplier.