Energy Contents of Some Well-Known Solutions in Teleparallel Gravity

In the context of teleparallel equivalent to General Relativity, we study energy and its relevant quantities for some well-known black hole solutions. For this purpose, we use the Hamiltonian approach which gives reasonable and interesting results. We find that our results of energy exactly coincide with several prescriptions in General Relativity. This supports the claim that different energy-momentum prescriptions can give identical results for a given spacetime. We also evaluate energy-momentum flux of these solutions.Comment: 16 pages, accepted for publication in Astrophys. Space Sc

Reproducibility Analysis Of The Stability And Treatment Of Vertebral Metastatic Lesions

Objectives: To investigate the reproducibility among spine surgeons in defining the treatment of vertebral metastatic lesions, taking into account the mechanical stability of injuries. Methods: Twenty cases of isolated vertebral metastatic lesions were presented to ten experts. Their opinion was then asked about the stability of the lesion, as well as their treatment option. Results: The interobserver Kappa coefficient obtained both for stability analysis as to the decision of the treatment was poor (0.334 and 0.248, respectively). Conclusions: Poor interobserver reproducibility was observed in deciding the treatment of vertebral metastatic lesions when considering the stability of the lesions.133232234American Cancer Society, (2007) Cancer Facts and Figures, , Atlanta: American Cancer SocietyNewman, C.B., Keshavarzi, S., Aryan, H.E., En bloc sacrectomy and reconstruction technique modification for pelvic fixation (2009) Surg Neurol, 72 (6), pp. 752-756Harrington, K.D., Current concepts review: Metastatic disease of the spine (1986) J Bone Joint Surg Am, 68 (7), pp. 1110-1115Gasbarrini, A., Cappuccio, M., Mirabile, L., Bandiera, S., Terzi, S., Barbanti Bròdano, G., Spinal metastases: Treatment evaluation algorithm (2004) Eur Rev Med Pharmacol Sci, 8 (6), pp. 265-274Bilsky, M., Smith, M., Surgical approach to epidural spinal cord compression (2006) Hematol Oncol Clin North Am, 20 (6), pp. 1307-1317Weber, M.H., Burch, S., Buckley, J., Schmidt, M.H., Fehlings, M.G., Vrionis, F.D., Instability and impending instability of the thoracolumbar spine in patients with spinal metastases: A systematic review (2011) Int J Oncol, 38 (1), pp. 5-12Tokuhashi, Y., Kawano, H., Ohsaka, S., Matsuzaki, H., Toriyama, S., A scoring system for preoperative evaluation of the prognosis of metastatic spine tumor (a preliminary report) (1989) Nihon Seikeigeka Gakkai Zasshi, 63 (5), pp. 482-489Tokuhashi, Y., Matsuzaki, H., Toriyama, S., Kawano, H., Ohsaka, S., Scoring system for the preoperative evaluation of metastatic spine tumor prognosis (1990) Spine (Phila Pa 1976), 15 (11), pp. 1110-1113Tomita, K., Kawahara, N., Baba, H., Tsuchiya, H., Fujita, T., Toribatake, Y., Total em bloc spondylectomy. A new surgical technique for primary malignant vertebral tumors (1997) Spine (Phila Pa 1976), 22 (3), pp. 324-333Tomita, K., Kawahara, N., Kobayashi, T., Yoshida, A., Murakami, H., Akamaru, T., Surgical strategy for spinal metastases (2001) Spine (Phila Pa 1976), 26 (3), pp. 298-306Fisher, C.G., DiPaola, C.P., Ryken, T.C., Bilsky, M.H., Shaffrey, C.I., Berven, S.H., A novel classification system for spinal instability in neoplastic disease: An evidence-based approach and expert consensus from the Spine Oncology Study Group (2010) Spine (Phila Pa 1976), 35 (22), pp. E1221-E1229Fourney, D.R., Frangou, E.M., Ryken, T.C., Dipaola, C.P., Shaffrey, C.I., Berven, S.H., Spinal instability neoplastic score: An analysis of reliability and validity from the spine oncology study group (2011) J Clin Oncol, 29 (22), pp. 3072-307

Relationship between childhood maltreatment and geriatric depression: the mediator effect of personality traits.

Childhood maltreatment is an important factor associated with adverse mental health outcomes including geriatric depression and the "big five" personality characteristics. The objective of this study was to evaluate a model where personality characteristics mediate the relationship between childhood maltreatment and geriatric depression. In this cross-sectional study, elderly subjects from socioeconomically disadvantaged neighborhoods of Porto Alegre, Brazil (n = 260) completed the Childhood Trauma Questionnaire (CTQ), NEO-Five Factor Inventory (NEO-FFI), and Mini International Neuropsychiatric Interview 5.0 (MINI plus). We used structural equation modeling (SEM) to evaluate the mediation hypothesis. The five personality factors (neuroticism, extraversion, agreeableness, openness, and conscientiousness) were related to childhood maltreatment and depression. Mediation analysis revealed that neuroticism and extraversion are complete mediators, agreeableness and conscientiousness are partial mediators, and openness is not a mediator. These findings support the hypothesis in which childhood maltreatment is associated with geriatric depression and mediated by personality factors. These results suggest that reducing the maladaptive personality trait in elderly people who suffered childhood maltreatment could prevent geriatric depression

QQˉQ{\bar Q} potential in the Schwinger model on curved space - time

We study the confining and screening aspects of the Schwinger model on curved static backgrounds.Comment: 14 pages, Latex. Typos corrected. Erratum submitte