The spin glass transition of the three dimensional Heisenberg spin glass

It is shown, by means of Monte Carlo simulation and Finite Size Scaling analysis, that the Heisenberg spin glass undergoes a finite-temperature phase transition in three dimensions. There is a single critical temperature, at which both a spin glass and a chiral glass orderings develop. The Monte Carlo algorithm, adapted from lattice gauge theory simulations, makes possible to thermalize lattices of size L=32, larger than in any previous spin glass simulation in three dimensions. High accuracy is reached thanks to the use of the Marenostrum supercomputer. The large range of system sizes studied allow us to consider scaling corrections.Comment: 4 pages, 4 Postscript figures, version to be published in Physical Review Letter

Spin and chirality orderings of the one-dimensional Heisenberg spin glass with the long-range power-law interaction

The ordering of the one-dimensional Heisenberg spin glass interacting via the long-range power-law interaction is studied by Monte Carlo simulations. Particular attention is paid to the possible occurrence of the ``spin-chirality decoupling'' for appropriate values of the power-law exponent \sigma. Our result suggests that, for intermediate values of $\sigma$, the chiral-glass order occurs at finite temperatures while the standard spin-glass order occurs only at zero temperature.Comment: Proceedings of the Highly Frustrated Magnetism (HFM2006) conference. To appear in a special issue of J. Phys. Condens. Matte

On the Truncated Pareto Distribution with applications

The Pareto probability distribution is widely applied in different fields such us finance, physics, hydrology, geology and astronomy. This note deals with an application of the Pareto distribution to astrophysics and more precisely to the statistical analysis of mass of stars and of diameters of asteroids. In particular a comparison between the usual Pareto distribution and its truncated version is presented. Finally a possible physical mechanism that produces Pareto tails for the distribution of the masses of stars is suggested.Comment: 10 pages 6 figure

COMPUTER AIDED DRAFTING AND CONSTRUCTION OF STANDARD DRAFTING TABLE FOR COLLEGE OF ENGINEERING STUDIO IN AFE BABALOLA UNIVERSITY

There is a serious need to design and construct a more convenient drafting table with a reduce cost for the high number of Students using design studio in mechanical and mechatronics department, Afe Babalola University Ado Ekiti, Nigeria. This project presents the design and fabrication of a standard drafting table with the use of “AutoCAD TM” software. The design helps to find out a precise dimensions of various part of table with great accuracy within small time and gives fine representation of drafting table. The detail drawing enhance the speed of production as each technician working on the table work on different part which makes the fabrication more faster and précised. The joining of the part was done through arc-welding using gauge 10 electrode. The slot on the adjusting hanger was machine on milling machine. The table was fabricated using a 2”*2” square pipe of 2mm thick of mild steal material commonly available in market. Main part are: stand of 2”*2” 3ft long, middle and stand brace 2”*2” 2.5ft long, the base of 1ft and the top was made of a plywood of 3ft by 4ft as the standard size for A1 paper for drafting. The straight edge of the board help in the squaring of the drafting table and a accurate drafting. The total cost of production per one is approximately N22,300. Compare to the market price from some other company of the same product of $250 as at the time of production. This makes the institution to produce 50pieces of the drafting table

The prevalence, clinical features, risk factors and outcome associated with cryptococcal meningitis in HIV positive patients in Kenya

Objectives: To determine the prevalence, clinical features, risk factors and outcomes associated with cryptococcal meningitis (CM) in human immunodeficiency virus (HIV) positive patients at two referral hospitals in Nairobi, Kenya.Design: Prospective, observational study.Setting: Kenyatta National Hospital (KNH) and Mbagathi District Hospital (MDH), Nairobi, KenyaSubjects: Three hundred and forty HIV patients presenting with suspected CM.Results: Of three hundred and forty suspected CM patients, 111 (33%) were diagnosed with CM by CrAg. Among CM patients, in-hospital mortality was 36% (38/106), median age was 35 years (range, 19-60 years) and median CD4 count was 41 cells/μL (n=89, range 2-720 cells/μL). Common clinical manifestations among CM patients included headache 103 (93%), neck stiffness 76 (69%) and weight loss 53 (48%). Factors independently associated with CM were male sex, headache, blurred vision and previous antifungal drug use. Night sweats and current use of anti-retroviral therapy were associated with reduced risk for CM.Conclusions: There is a high prevalence of CM and CM-associated mortality in HIV patients at KNH and MDH despite treatment with antifungal and anti-retroviral drugs. This study demonstrates the need to address the existing inadequacies of CM patient outcomes in Kenya

Nursing Care of Patients With Cirrhosis: The LiverHope Nursing Project

Cirrhosis is a complex disease that is associated with disturbances in different organs besides the liver, including kidneys, heart, arterial circulation, lungs, gut, and brain. As a consequence, patients develop a number of complications that result in frequent hospital admissions and high morbidity and mortality. Patients with cirrhosis require constant and rigorous monitoring both in and outside the hospital. In this context, the role of nurses in the care of patients with cirrhosis has not been sufficiently emphasized and there is very limited information about nursing care of patients with cirrhosis compared with other chronic diseases. The current article provides a review of nursing care for the different complications of patients with cirrhosis. Nurses with specific knowledge on liver diseases should be incorporated into multidisciplinary teams managing patients with cirrhosis, both inpatient and outpatient. Conclusion: Nurses play an important role in the management and prevention of complications of the disease and improvement in patients' quality of life and bridge the gap between clinicians and families, between primary care and hospital care, and provide medical education to patients and caregivers