Gauged Nambu-Jona-Lasinio model with extra dimensions

We investigate phase structure of the D (> 4)-dimensional gauged Nambu-Jona-Lasinio (NJL) model with $\delta(=D-4)$ extra dimensions compactified on TeV scale, based on the improved ladder Schwinger-Dyson (SD) equation in the bulk. We assume that the bulk running gauge coupling in the SD equation for the SU(N_c) gauge theory with N_f massless flavors is given by the truncated Kaluza-Klein effective theory and hence has a nontrivial ultraviolet fixed point (UVFP). We find the critical line in the parameter space of two couplings, the gauge coupling and the four-fermion coupling, which is similar to that of the gauged NJL model with fixed (walking) gauge coupling in four dimensions. It is shown that in the presence of such walking gauge interactions the four-fermion interactions become ``nontrivial'' even in higher dimensions, similarly to the four-dimensional gauged NJL model. Such a nontriviality holds only in the restricted region of the critical line (``nontrivial window'') with the gauge coupling larger than a non-vanishing value (``marginal triviality (MT)'' point), in contrast to the four-dimensional case where such a nontriviality holds for all regions of the critical line except for the pure NJL point. In the nontrivial window the renormalized effective potential yields a nontrivial interaction which is conformal invariant. The exisitence of the nontrivial window implies ``cutoff insensitivity'' of the physics prediction in spite of the ultraviolet dominance of the dynamics. In the formal limit D -> 4, the nontrivial window coincides with the known condition of the nontriviality of the four-dimensional gauged NJL model, $9/(2N_c) < N_f - N_c < 9/2 N_c$.Comment: 34 pages, 6 figures, references added, to appear in Phys.Rev.D. The title is changed in PR

Acute superior mesenteric venous thrombosis with advanced gastric cancer: a case report

Although the advanced stages of neoplasms have a risk of superior mesenteric venous thrombosis (MVT), an initial clinical diagnosis of MVT is sometimes difficult and it can be treated as a cancer-related pain using NSAIDs and/or opioids

A case of pulmonary abscess after severe thoracic traumasuccessfully treated with thoracotomy

Thoracic trauma is rarely managed by major thoracotomy. We report a 61-year-old male patient with pulmonaryabscess after severe thoracic trauma, who was managed successfully by major thoracotomy. The patient was injured after a fall from a height of 6 meters.He developed multiple rib fractures with right flail chest, pulmonary contusion,right hemo-pneumothorax, and subcutaneous emphysema.He was intubated and ventilated, and his chest was drainaged. He had been managed with conservative treatment initially. However he developed a pulmonary abscess in the right lung that was unresponsive to CT-guided drainage therapy. The right lower lobectomy was performed on the 23rd day after his injury. His general condition greatly recovered and all the chest drains were removed on the 45th post trauma day. He was discharged from the hospital on the 86th post operative day. He was considered now fully recovered at 7 months after the accident

Elevated Brachial-Ankle Pulse Wave Velocity Is Associated with Left Ventricular Hypertrophy in Hypertensive Patients after Stroke

Brachial-ankle pulse wave velocity (baPWV) is widely used as a marker of arterial stiffness, but there are no data regarding the usefulness of measuring baPWV in hypertensive patients after stroke. The purpose of this study was to examine the clinical significance of baPWV by assessing its correlation with echocardiographic parameters in hypertensive patients after stroke. The study enrolled 61 hypertensives after stroke (24 patients with cerebral infarction and 37 with cerebral hemorrhage) and 61 age-matched hypertensives without stroke. Left ventricular (LV) hypertrophy was evaluated by measuring LV mass index (LVMI) and relative wall thickness (RWT), and LV diastolic function was evaluated by measuring peak early mitral annular velocities (E') using echocardiography. Concentric LV hypertrophy showing increased RWT (0.50 ± 0.12) was observed in hypertensives after stroke, but not in hypertensives without stroke. In hypertensives after stroke, elevated baPWV correlated with age (r = 0.60, p < 0.001), systolic blood pressure (r = 0.56, p < 0.001), increased LVMI (r = 0.47, p < 0.001), and decreased E' (r = -0.40, p = 0.002). Multiple regression analysis showed that age (β coefficient = 0.43, p < 0.001), systolic blood pressure (β coefficient = 0.40, p < 0.001), and LVMI (β coefficient = 0.25, p = 0.008) were independent determinants of elevated baPWV. In conclusion, elevated baPWV is more closely associated with LV hypertrophy than with LV diastolic dysfunction. Elevated baPWV is independently associated with the severity of LV hypertrophy adjusted with systolic blood pressure and age in hypertensive patients after stroke