Noncommutative QED and Anomalous Dipole Moments

We study QED on noncommutative spaces, NCQED. In particular we present the detailed calculation for the noncommutative electron-photon vertex and show that the Ward identity is satisfied. We discuss that in the noncommutative case moving electron will show {\it electric} dipole effects. In addition, we work out the electric and magnetic dipole moments up to one loop level. For the magnetic moment we show that noncommutative electron has an intrinsic (spin independent) magnetic moment.Comment: 27 pages, several .ps and .eps figures, v3:typos in some formula corrected, version appeared in JHE

Comment on "Constraint Quantization of Open String in Background B field and Noncommutative D-brane"

In the paper "Constraint Quantization of Open String in Background $B$ field and Noncommutative D-brane", it is claimed that the boundary conditions lead to an infinite set of secondary constraints and Dirac brackets result in a non-commutative Poisson structure for D-brain. Here we show that contrary to the arguments in that paper, the set of secondary constraints on the boundary is finite and the non-commutativity algebra can not be obtained by evaluating the Dirac brackets.Comment: minor corrections, to appear in Phys.Lett.

Transfusion-related acute lung injury in multiple traumatized patients

Background: Many of the multiple traumatized patients who refer to the hospital need transfusion. Transfusion-related acute lung injury (TRALI) is a serious clinical syndrome associated with the transfusion of plasma-containing blood components. In the article, we present a case of TRALI following transfusion of packed red blood cells Case Presentation: A 24 year old male referred to Shahid Beheshti Hospital due to multiple trauma with left femoral and humerus fractures. Due to severe anemia he received 3 units of packed red blood cells. The symptoms of TRALI began 2 hours after transfusion. He was transferred to intensive care unit (ICU) due to metabolic acidosis and severe hypoxia. The TRALI was confirmed after ruling out the other probable pulmonary diseases. He recovered and was discharged. Conclusion: Transfusion related acute lung injury should be considered in any case receiving transfusion of plasma containing blood components

Epidemiology of tuberculosis in northeast of Iran: A population-based study

Background: Tuberculosis (TB) is currently one of the greatest problems in public health. Mycobacterium tuberculosis infects about one third of the world's population, of whom more than 80% are living in developing countries. The incidence and prevalence of TB are very different in various parts of Iran and also throughout the world. Golestan province is one of the areas in the country where the risk of TB is the highest because of its ethnically varied population and special location. We aimed to describe the prevalence of TB and related demographic data in Golestan province (northeast of Iran). Methods: We collected all data of patients with TB who registered in 2005 and 2006 in each of the 11 districts of Golestan province. Data were entered into the computer database and age-specific incidence rates per 100 000 population were calculated. Results: There were 321 new smear-positive cases. The incidence and prevalence of TB were 20.88 and 38.15 per 100 000 population, respectively. The male to female ratio was 0.96. Relapse of TB was reported in 20 patients. We found 141 cases of extrapulmonary TB, with a significant predominance in women. The organ most frequently involved in extrapulmonary TB was the lymph nodes. Generally, smear-negative TB was more common in men and extrapulmonary TB was more common in women. Conclusion: The incidence and prevalence of TB were higher in Golestan province in comparison with other provinces in Iran. We suggest using improved screening strategies and better education about TB for high-risk groups and physicians

Dirac Quantization of Open Strings and Noncommutativity in Branes

We apply the Dirac bracket quantization to open strings attached to branes in the presence of background antisymmetric field and recover an inherent noncommutativity in the internal coordinates of the brane.Comment: 25 pp, typos corrected, minor change

Experimental study of out of equilibrium fluctuations in a colloidal suspension of Laponite using optical traps

This work is devoted to the study of displacement fluctuations of micron-sized particles in an aging colloidal glass. We address the issue of the validity of the fluctuation dissipation theorem (FDT) and the time evolution of viscoelastic properties during aging of aqueous suspensions of a clay (Laponite RG) in a colloidal glass phase. Given the conflicting results reported in the literature for different experimental techniques, our goal is to check and reconcile them using \emph{simultaneously} passive and active microrheology techniques. For this purpose we measure the thermal fluctuations of micro-sized brownian particles immersed in the colloidal glass and trapped by optical tweezers. We find that both microrheology techniques lead to compatible results even at low frequencies and no violation of FDT is observed. Several interesting features concerning the statistical properties and the long time correlations of the particles are observed during the transition

Combining multi-criteria and space syntax analysis to assess a pedestrian network: the case of Oporto

This paper describes a GIS-based integrated approach to assess a pedestrian network by combining multi-criteria and space syntax. The analysis combines pedestrian attributes with street connectivity and both factors were evaluated by a group of experts. The approach was adopted in the city of Oporto. Results show that the city centre offers various conditions; however, overall they are poor for pedestrians. Moreover, the streets which scored best are not integrated into the network. The described approach can potentially be replicated in other cities in terms of improving the walkability and promoting sustainable urban mobility.This research was funded by the CIVITAS CAPITAL (Ref. No. MOVE/FP7/604778/CAPITAL) and by the Centre for Territory, Environment and Construction of the School of Engineering of University of Minho.info:eu-repo/semantics/publishedVersio