Coherent states for a quantum particle on a circle

The coherent states for the quantum particle on the circle are introduced. The Bargmann representation within the actual treatment provides the representation of the algebra $[\hat J,U]=U$, where $U$ is unitary, which is a direct consequence of the Heisenberg algebra $[\hat \phi, \hat J]=i$, but it is more adequate for the study of the circlular motion.Comment: 23 pages LaTeX, uses ioplppt.st

The amount of phosphorus in the blood of heroin abusers compared to that of healthy subjects

Background: The aim of the current retrospective study was to assess any difference in terms of serum phosphate (P) between heroin addicts and healthy subjects. Methods: Between 2011 and 2012, under the authority of the Greek Organization Against Drugs (OKANA), 30 regular heroin addicts, 22 males and 8 females (Group A) participated at the study. Between 2010 and 2011, 30 healthy individuals, 22 males and 8 females (Group B), presented on an outpatient basis for either fatigue or common flu symptoms without fever at the 424 Military Hospital of Thessaloniki. Results: No significant difference between group A and B, in terms of either age (p = 0.454, Mann-Whitney test) or male/female ratio (p = 0.573, Chi2 test), suggesting a homogeneity for the population of individuals participating in the study. The mean values of serum-P in group A and B were 3.47 ± 0.65 and 3.35 ± 0.58, respectively (p = 0.45, Mann Whitney test). Conclusions: The absence of statistical difference of serum-P between heroin addicts and healthy subjects as shown in our results should be confirmed in further studies

Is there any potential clinical impact of serum phosphorus and magnesium in patients with lung cancer at first diagnosis? A multi-institutional study

Background: The aim of the study was to determine whether the expression of baseline phosphorus (P) and magnesium (Mg) levels were prognostic in terms of stage and overall survival (OS) in newly diagnosed non-small cell lung cancer (NSCLC) and small cell lung cancer (SCLC) patients. Materials and Methods: Retrospectively, 130 patients were selected at the time of diagnosis oflung cancer (100 with NSCLC and 30 with SCLC), before the initialization of any chemo-radiotherapy. The median age was 67 (range 29-92). IA, IB, IIA, IIB, IIIA, IIIB and IV stages were present in 3, 4, 19, 6, 25, 8, and 65 patients, respectively. After centrifugation, the levels of serum P and Mg were measured using the nephelometric method/ photometry and evaluated before any type of treatment. Results: Higher than normal levels of P were found in 127/130 patients, while only four patients had elevated Mg serum values. In terms of Spearman test, higher P serum values correlated with either stage (rho=- 0.334, p<0.001) or OS (rho=-0.212, p=0.016). Additionally, a significant negative correlation of Mg serum levels was found with stage of disease (rho=-0.135, P=0.042). On multivariate cox-regression survival analysis, only stage (p<0.01), performance status (p<0.01) and P serum (p=0.045) showed a significant prognostic value. Conclusions: Our study indicated that pre-treatment P serum levels in lung cancer patients are higher than the normal range. Moreover, P and Mg serum levels are predictive of stage of disease. Along with stage and performance status, the P serum levels had also a significant impact on survival. This information may be important for stratifying patients to specific treatment protocols or intensifying their therapies. However, larger series are now needed to confirm our results