BODY MECHANICS OF TAI CHI CHUAN

The purpose of this study was to analyse the fundamental movements of Tai Chi and to identify their correct execution, so as to increase their effectiveness, by using modern motion analysis techniques. In this preliminary study, we focused on the power generated from the forward push movement. The process, which involved the subject pushing a punch bag using stands of different lengths and widths, was videotaped. Reflective markers were placed on essential joints of the subject to allow the creation of a spatial model using motion analysis software. The results demonstrated that the length of the stand had more effect than its width on the power generated, and the standard as recommended by certain schools of Tai Chi might not be optimum

Recent Evidence on the Oil Price Shocks on Gulf Cooperation Council Stock Markets

© 2017, © 2017 International Journal of the Economics of Business. The recent plunge in the price of oil affected many countries, especially major oil producers and exporters, such as the Gulf Cooperation Council (GCC), which accounts for half of the global oil reserves. This paper examines the impact of oil price changes on GCC stock markets, including Bahrain, Kuwait, Oman, Qatar, Kingdom of Saudi Arabia, and United Arab Emirates over a 10-year period, 2005–2015. We examine the direction of influence and influence absorption through Granger causality and impulse response function. The results are important for portfolio management at the international level, and provide insights for government and regulatory authorities in times of oil price change. Additionally, the evidence suggests the need for more economic diversification at the country level in the GCC region to mitigate high volatility in the event of oil shocks

Complexes of transition and nontransition metals of dithiocarbazate ion and their biological activities.

The complexation of the dithiocarbazate ion (DTCA−) with various metal ions, viz., Sn(II)/(IV), Bi(III), Sb(III), U(VI), Zr(IV), Th(IV), Al(III), Ni(II), Zn(II), and Cu(II) was investigated. Most of the complexes were hexa-coordinated with the exception of Cu(II), Ni(II), and Zn(II) complexes that were four-coordinated. The biological properties of the metal complexes revealed that in general the complexes of nontransition metals were more effective against microorganisms than those of transition metals. In particular, [Sb(DTCA)Cl2·2H2O] and [Al(DTCA)Cl2·2H2O] were found to have strong antimicrobial activities. A minimum inhibitory concentration of 300 μg/mL was recorded for the above two complexes against Pseudomonas aeruginosa while that against Bacillus cereus was found to be 700 μg/mL. None of the complexes were cytotoxic

Influence of Soybean Oil or Non-Soybean Oil Based Lipid Emulsions on Parenteral Nutrition Associated Liver Disease in Late Preterm and Term Infants

Background: Total parenteral nutrition (TPN) is a life-saving therapy given to neonates with intestinal failure. However, infants on long-term TPN may experience Parenteral Nutrition-Associated Liver Disease (PNALD). New formulations for lipid emulsions are purportedly better than the traditional soy-based lipid emulsions (SLE). Our primary objective was to determine the prevalence of PNALD in infants who received non-soybean-based lipid emulsions (NSLE) or SLE. Methods: In this retrospective study, medical records of all infants admitted to a tertiary neonatal intensive care unitfrom 2004 to 2013 were reviewed. Late preterm (34 -36 weeks of gestation) and term infants who were on TPN for more than two weeks were included. Their demographic data and clinical variables were collected. Results: 208 infants received SLE for more than two weeks. The prevalence rate of PNALD in those who received SLE was 21% while that of those who received the NSLE was 17%. No significant difference was found between the ‘Soy’ or ‘NonSoy’ subgroups (p = 0.315). Seventy infants received TPN for more than four weeks. The prevalence rate of PNALD in infants who received SLE and NSLE was 35% and 25% respectively. No significant statistical difference was found between the ‘Soy’ or ‘NonSoy’ subgroups (p = 0.132). Conclusions: The type of lipid emulsion does not significantly influence the rate of PNALD in late preterm and term infants on long-term TPN

e-CAF: flexible marking schemes for electronic coursework assessment and feedback

Recent surveys reveal that many university students in the U.K. are not satisfied with the timeliness and usefulness of the feedback given by their tutors. Ensuring timeliness in marking can result in a reduction in the quality of feedback. Though suitable use of Information and Communication Technology should alleviate this problem, existing Virtual Learning Environments are inadequate to support detailed marking scheme creation and they provide little support for giving detailed feedback. This paper describes a unique new web-based tool called e-CAF for facilitating coursework assessment and feedback management directed by marking schemes. Using e-CAF, tutors can create or reuse detailed marking schemes efficiently without sacrificing the accuracy or thoroughness in marking. The flexibility in marking scheme design also makes it possible for tutors to modify a marking scheme during the marking process without having to reassess the students’ submissions. The resulting marking process will become more transparent to students

Measurement of Trace I-129 Concentrations in CsI Powder and Organic Liquid Scintillator with Accelerator Mass Spectrometry

Levels of trace radiopurity in active detector materials is a subject of major concern in low-background experiments. Procedures were devised to measure trace concentrations of I-129 in the inorganic salt CsI as well as in organic liquid scintillator with Accelerator Mass Spectrometry (AMS) which leads to improvement in sensitivities by several orders of magnitude over other methods. No evidence of their existence in these materials were observed. Limits of < 6 X 10^{-13} g/g and < 2.6 X 10^{-17} g/g on the contaminations of I-129 in CsI and liquid scintillator, respectively, were derived.These are the first results in a research program whose goals are to develop techniques to measure trace radioactivity in detector materials by AMS.Comment: Proceedings of 10th International Conference on Accelerator Mass Spectrometr

The effects of mindfulness-based stress reduction program on the mental health of family caregivers: a randomized controlled trial

&lt;b&gt;Background&lt;/b&gt; Caregivers of people with chronic conditions are more likely than non-caregivers to have depression and emotional problems. Few studies have examined the effectiveness of mindfulness-based stress reduction (MBSR) in improving their mental well-being. &lt;p&gt;&lt;/p&gt; &lt;b&gt;Methods&lt;/b&gt; Caregivers of persons with chronic conditions who scored 7 or above in the Caregiver Strain Index were randomly assigned to the 8-week MBSR group (n = 70) or the self-help control group (n = 71). Validated instruments were used to assess the changes in depressive and anxiety symptoms, quality of life, self-efficacy, self-compassion and mindfulness. Assessments were conducted at baseline, post-intervention and at the 3-month follow-up. &lt;p&gt;&lt;/p&gt; &lt;b&gt;Results &lt;/b&gt;Compared to the participants in the control group, participants in the MBSR group had a significantly greater decrease in depressive symptoms at post-intervention and at 3 months post-intervention (p &lt; 0.01). The improvement in state anxiety symptoms was significantly greater among participants in the MBSR group than those of the control group at post-intervention (p = 0.007), although this difference was not statistically significant at 3 months post-intervention (p = 0.084). There was also a statistically significant larger increase in self-efficacy (controlling negative thoughts; p = 0.041) and mindfulness (p = 0.001) among participants in the MBSR group at the 3-month follow-up compared to the participants in the control group. No statistically significant group effects (MBSR vs. control) were found in perceived stress, quality of life or self-compassion. &lt;p&gt;&lt;/p&gt; &lt;b&gt;Conclusions &lt;/b&gt;MBSR appears to be a feasible and acceptable intervention to improve mental health among family caregivers with significant care burden, although further studies that include an active control group are needed to make the findings more conclusive

Field tests on a grease trap effluent filter

This study investigates the field performance tests of a commercial grease trap effluent filter for removal of total suspended solids, and oil and grease discharged from the clear zone of full service restaurant grease traps. The grease trap effluent filters were installed on 1,000-gallon, 2,000-gallon and 5,400-gallon full service restaurant grease traps over a period of 8 weeks, and samples were taken at the inlets and outlets. On average, the effluent filters demonstrated to be capable of removing 41% to 57% of TSS, and 43% to 52% of O and G. Field test data also showed that the total amount of TSS removed by the grease trap effluent filter installed on 1,000 gallon, 2,000 gallon and 5,400 gallon grease traps were approximately 2,542 kg, 709 kg, and 2,319 kg, respectively; and the total amount of O and G removed over the same period were approximately 1,104 kg, 271 kg, and 897 kg, respectivel

Elimination of Unwanted Electro-magnetic Noise in a GTEM Cell for IC Emission Measurements

The IEC 61967 standards suggest an integrated circuits (ICs electromagnetic emission measurement technique by mounting IC test board on TEM/GTEM cell wall. It appears that the method has limited device under test (DUT) rotation in horizontal position and neglected vertical polarization while rotating in horizontal position. In general, the electromagnetic emission of a device at an observation point is contributed by both the horizontal and vertical polarizations. The limitation can be overcome by conducting the emission test in Gigahertz Transverse Electromagnetic Mode (GTEM). However, supporting components on the board and interface cable are the major concerns which may contribute unwanted noise to interfere with the measurement. In this paper, we present an effort to tackle these crucial matters in the setup in order to quantify IC electromagnetic emission in GTEM cell with application of basic electromagnetic compatibility (EMC) measurement approaches such as shielding, grounding and suppression using ferromagnetic material. The results show strong evidence on the effectiveness of the technique proposed to ensure reliable IC emission measurement in GTEM cell