Poisson structure on a space with linear SU(2) fuzziness

The Poisson structure is constructed for a model in which spatial coordinates of configuration space are noncommutative and satisfy the commutation relations of a Lie algebra. The case is specialized to that of the group SU(2), for which the counterpart of the angular momentum, as well as the Euler parameterization of the phase space are introduced. SU(2)-invariant classical systems are discussed, and it is observed that the path of particle can be obtained by the solution of a first-order equation, as the case with such models on commutative spaces. The examples of free particle, rotationally-invariant potentials, and specially the isotropic harmonic oscillator are investigated in more detail.Comment: 12+1 pages, no figs, LaTeX2

Clinical manifestations of Giardiasis in Iran

Context: Giardiasis has multiple clinical manifestations and its prevalence is relatively high in the Hamadan province of Iran. Aims: This study was conducted to determine the most frequent clinical signs and symptoms of Giardiasis in the Hamadan province of Iran in 2006. Setting and Design: This was a descriptive cross sectional study. Methods and Material: Sixty four patients infected with Giardia were recruited. Antiglidin anti-body and TTG tests were done to rule out celiac disease. Statistical analysis used: The data was entered into a computer and chi-square test was used for statistical analysis. Results: Of a total of 64 cases, 26 were females. Giardiasis was most common in cases aged 16-20 years old (20.3%), in males (59.4%) and in patients with the educational status of primary school (31.25%). The most frequent symptom was abdominal pain (42.1%). Conclusion: We found that the clinical manifestations of Giardiasis are similar to that of other gastrointestinal diseases such as celiac. So Giardiasis should be considered as the most probable diagnosis in patients with gastrointestinal problems

A sham-controlled trial of acupressure on the quality of sleep and life in haemodialysis patients

Background Sleep disorder in haemodialysis patients can lead to disturbance in their psychosocial function and interpersonal relations, and reduced quality of life. The aim of the present study was to investigate the effect of acupressure on the quality of sleep of haemodialysis patients. Methods In a randomised controlled trial, 108 haemodialysis patients were randomly divided into three groups: true acupressure, placebo acupressure, and no treatment. The two acupressure groups received treatment three times a week for 4 weeks during dialysis. Routine care only was provided for the no treatment group. The main study outcome was sleep quality. Results The total Pittsburgh Sleep Quality Index score decreased significantly from 11.9±3.13 to 6.2±1.93 in the true acupressure group, from 11.3±3.69 to 10.6±3.82 in the sham acupressure group, and from 10.9±4.10 to 10.7±3.94 in the no treatment group. There was a significant difference between groups (p<0.001). Conclusions Acupressure seems to have a positive effect on the sleep quality in haemodialysis patients. Clinical trial registration IRCT201106145864N2

Dynamic modelling and visco-elastic parameter identification of a fibre-reinforced soft fluidic elastomer manipulator

A dynamic model of a soft fibre-reinforced fluidic elastomer is presented and experimentally verified, which can be used for model-based controller design. Due to the inherent visco-(hyper)elastic characteristics and nonlinear timedependent behaviour of soft fluidic elastomer robots, analytic dynamic modelling is challenging. The fibre reinforced noninflatable soft fluidic elastomer robot used in this paper can produce both planar and spatial movements. Dynamic equations are developed for both cases. Parameters, related to the viscoelastic behaviour of the robot during elongation and bending motion, are identified experimentally and incorporated into our model. The modified dynamic model is then validated in experiments comparing the time responses of the physical robot with the corresponding outputs of the simulation model. The results validate the accuracy of the proposed dynamic model

Potential probiotic of Lactobacillus johnsonii LT171 for chicken nutrition

The objective of this research was to investigate the potential probiotic of Lactobacillus johnsonii LT171. It had aggregation (60 min) and antibacterial effects against Salmonella Enteritidis, Salmonella Typhimurium and Escherichia coli O78:K80. It showed amylase and protease activity and high clear zone in culture medium containing calcium phytate; cell surface hydrophobicity, 85.21 ± 7.27%; resistance to acidic condition (pH 3 for 90 min) and bile salts (in culture medium containing 0.075% ox gall). Also it had resistance to nalidixic acid and neomycine. This research showed appropriate probiotic properties of L. johnsonii LT171 for chicken nutrition. Hence this strain can complement the characteristics of other strains in multistrain probiotics because of its high clear zone in culture medium containing calcium phytate