32 research outputs found
Strong and radiative decays of X(3872) as a hadronic molecule with a negative parity
Properties of X(3872) are studied by regarding it as a hadronic
molecule with in the phenomenological Lagrangian approach. We
find that our model with about 97.6% isospin zero component explains the
existing data nicely, for example, the ratio . We predict
the partial widths of the radiative decays of ,
and the strong decays of ,
as well as . Our analysis
shows that the measurement of the ratio may signal the nature
of X(3872)
Utility of Combined Use of Transabdominal Ultrasonography and Fecal Immunochemical Test Examinations in Ulcerative Colitis
This study examined the utility of the combined use of transabdominal ultrasonography (TUS) and fecal immunochemical testing (FIT) to detect mucosal inflammation, vis-a-vis the Mayo endoscopic subscore (MES), in ulcerative colitis (UC). Sixty-three UC patients who underwent TUS and FIT were retrospectively enrolled. For TUS, the colon was divided into five segments, and the bowel wall thickness was measured and evaluated. The accuracy of FIT (> 100 ng/ml) in detecting mucosal inflammation (MES>0) was 0.93, whereas that of TUS (BWT>2 mm) in each segment was 0.84-0.97. The combined use of TUS and FIT may be helpful in noninvasive treatment strategies
QCD S Parameter from Inhomogeneous Bethe-Salpeter Equation
We calculate the low-energy parameter S in QCD, which is also known as
L_{10}, and the pion decay constant f_\pi using inhomogeneous Bethe-Salpeter
equation in improved ladder approximation. To extract these quantities we
calculate the ``V-A'' two-point function, \Pi_{VV}(q^2) - \Pi_{AA}(q^2), in
space-like region. We obtain S = 0.43 \sim 0.48, which is about 30% larger than
the experimental value. The calculated f_\pi is well consistent with the result
by solving the homogeneous Bethe-Salpeter equation for pion. We also evaluate
parameter in SU(3) gauge theory with N_D doublets of fermions in connection
with walking technicolor model, and find that the value of S/N_D hardly depends
on N_D.Comment: 22 pages (LaTeX), 6 PostScript figures are included as
uuencoded-compressed-tar file at the end (need 'epsf.tex' macro package),
KUNS-1270 HE(TH)94/0
Central control of bone remodeling by neuromidin U.
Bone remodeling, the function affected in osteoporosis, the most common of bone diseases, comprises two phases: bone formation by matrix-producing osteoblasts 1 and bone resorption by osteoclasts 2 . The demonstration that the anorexigenic hormone leptin 3-5 inhibits bone formation through a hypothalamic relay Bone mass is maintained at a constant level between puberty and menopause by a succession of bone-resorption and bone-formation phases NMU is a small peptide produced by nerve cells in the submucosal and myenteric plexuses in the small intestine, and also by structures in the brain, including the dorsomedial nucleus of the hypothalamus 9 . It is generally assumed that NMU acts as a neuropeptide to regulate various aspects of physiology, including appetite, stress response and SNS activation 9 . Indeed, NMU-deficient (Nmu -/-) mice develop obesity due to increased food intake and reduced locomotor activity that is believed, at least in part, to be leptin independent 8 . In addition, expression of NMU is diminished in leptin-deficient (Lep ob ) mice 18 , but can be induced in these mice by leptin treatment When assessed at 3 and 6 months of age, both male and female Nmu -/-mice showed a high bone mass phenotype as compared to the wild type (WT), with male mice more severely affected than female mic
Summary of Oral Implantation Training for 5th Grade Students and Results of Questionnaire Survey of the Students\u27 Attitude toward It: Comparison between 2007 and 2008
Structure-activity relationships of L-homocysteic acid and its relatives on the electrical activity of an identifiable molluscan giant neurone (Achatina fulica férussac)
Effects of establishing a trauma center on the mortality rate among injured pediatric patients in Japan.
INTRODUCTION:It remains unclear whether trauma centers are effective for the treatment of injured pediatric patients. The aim of this study was to evaluate children's mortality before and after the establishment a trauma center by using standard mortality ratios (SMR) and a modified observed-expected chart. METHODS:This was a single center, retrospective chart review study that included injured pediatric patients (age <16 years) who were transported to our trauma center by the emergency medical services from 2012 to 2016 in Japan. RESULTS:Our study included 143 subjects: 45 (31%) were preschoolers aged < 6 years, and 43 (30%) had an injury severity score (ISS) ≥ 16. After the trauma centers established, the number of patients increased (70% increase per month), as did the number of the patients with an ISS of 41-75. The percentage of indirect transportations was significantly higher in the trauma center than in the non-trauma center (49% vs. 28%; p < 0.05). The SMR was significantly lower in the trauma-center than in the non-trauma center (0.461 vs. 0.589; p < 0.05). The mean value of the modified observed-expected chart was significantly higher in the trauma-center than in the non-trauma center (4.6 vs. 2.3; p < 0.05). For the patients who were directly transferred to our center, the transfer distance was greater in the trauma-center than in the non-trauma center (6.8 vs. 6.2 km; p < 0.05). The time interval from hospital admission to initiation of computed tomography (15.5 vs. 33 minutes; p < 0.05) and to definitive care (44 vs. 64.5 minutes; p < 0.05) decreased in the after group compared to the non-trauma center. CONCLUSIONS:The results of our study revealed that the centralization of pediatric injured pediatric patients in trauma centers improved the mortality rate in this population in Japan
Validation of the Conventional Trauma and Injury Severity Score and a Newly Developed Survival Predictive Model in Pediatric Patients with Blunt Trauma: A Nationwide Observation Study
To date, there is no clinically useful prediction model that is suitable for Japanese pediatric trauma patients. Herein, this study aimed to developed a model for predicting the survival of Japanese pediatric patients with blunt trauma and compare its validity with that of the conventional TRISS model. Patients registered in the Japan Trauma Data Bank were grouped into a derivation cohort (2009–2013) and validation cohort (2014–2018). Logistic regression analysis was performed using the derivation dataset to establish prediction models using age, injury severity, and physiology. The validity of the modified model was evaluated by the area under the receiver operating characteristic curve (AUC). Among 11 predictor models, Model 1 and Model 11 had the best performance (AUC = 0.980). The AUC of all models was lower in patients with survival probability Ps < 0.5 than in patients with Ps ≥ 0.5. The AUC of all models was lower in neonates/infants than in other age categories. Model 11 also had the best performance (AUC = 0.762 and 0.909, respectively) in patients with Ps < 0.5 and neonates/infants. The predictive ability of the newly modified models was not superior to that of the current TRISS model. Our results may be useful to develop a highly accurate prediction model based on the new predictive variables and cutoff values associated with the survival mortality of injured Japanese pediatric patients who are younger and more severely injured by using a nationwide dataset with fewer missing data and added valuables, which can be used to evaluate the age-related physiological and anatomical severity of injured patients
In-Hospital Mortality Risk of Transcatheter Arterial Embolization for Patients with Severe Blunt Trauma: A Nationwide Observational Study
This study investigated the risk factors for in-hospital mortality of severe blunt trauma patients who underwent transcatheter arterial embolization (TAE). We analysed data from the Japan Trauma Data Bank from 2009 to 2018. Patients with severe blunt trauma and an Injury Severity Score (ISS) ≥ 16 who underwent TAE were enrolled. The primary analysis evaluated patient characteristics and outcomes, and variables with significant differences were included in the secondary multivariate logistic regression analysis. In total, 5800 patients (6.4%) with ISS ≥ 16 underwent TAE. There were significant differences in the proportion of male patients, transportation method, injury mechanism, injury region, Revised Trauma Score, survival probability values, and those who underwent urgent blood transfusion and additional urgent surgery. In multivariable regression analyses, higher age, urgent blood transfusion, and initial urgent surgery were significantly associated with higher in-hospital mortality risk [p < 0.001, odds ratio (OR), 95% confidence interval (CI): 1.01 (1.00–1.01); p < 0.001, 3.50 (2.55–4.79); and p = 0.001, 1.36 (1.13–1.63), respectively]. Inter-hospital transfer was significantly associated with lower in-hospital mortality risk (p < 0.001, OR = 0.56, 95% CI = 0.44–0.71). Treatment protocols for urgent intervention before and after TAE and a safe, rapid inter-hospital transport system are needed to improve mortality risks for severe blunt trauma patients