19 research outputs found
CALCULATION OF THE D AND B MESON LIFETIMES AND THE UNITARITY TRIANGLE PARAMETERS
Using the expansions of the heavy meson decay widths in the heavy quark mass
and QCD sum rules for estimates of corresponding matrix elements,\, we
calculate the and meson lifetimes. The results for
D mesons are in a reasonable agreement with the data,\, while it is predicted:
[\Gamma (B_d)-\Gamma (B^\pm)]/\Gamma_B\se 4\%\, (and the lifetime difference
of the and mesons is even smaller);\,
[\Gamma(B_s^{short})-\Gamma(B_s^{long})]/{\ov \Gamma}(B_s)\se 8\%\,. The role
of the weak annihilation and Pauli interference contributions to the lifetime
differences is described in detail. In the course of self-consistent
calculations the values of many parameters crucial for calculations with
charmed and beauty mesons are found. In particular,\, the quark pole masses
are: M_c\se 1.65\,GeV,\,\, M_b\se 5.04\,GeV\,, and the decay constants are:
f_D(M_c)\se 165\,MeV\,,\,\,f_B(M_b)\se 120\,MeV\,. It is also shown that the
nonfactorizable corrections to the mixing are large,\,
B_B(M_b)\se (1-18\%)\,. The values of the unitarity triangle parameters are
found which are consistent with these results and the data available (except
for the NA31 result for the which is too large):
|V_{cb}|\se 4.2\cdot 10^{-2}\,,\, |V_{td}|\se 1.3\cdot 10^{-2}\,,\,
|V_{ub}/V_{cb}|\se 0.10\,,\, \{\,A\se 0.86\,,\,\,\rho \se -0.40\,,\,\, \eta \se
0.20\,\}.Comment: small improvements in the text and Table 2, Latex, 18 page
Features and Outcomes of 899 Patients With Drug-Induced Liver Injury: The DILIN Prospective Study
The drug-induced liver injury network (DILIN) is conducting a prospective study of patients with DILI in the United States. We present characteristics and subgroup analyses from the first 1257 patients enrolled in the study
Self-mutilation associated with dissociative disorders
p. 081-087The incidence of self-mutilation is high among patients with eating disorders, antisocial personality disorder, and borderline personality disorder. To determine the incidence of self-mutilation among patients with dissociative disorders, the first one hundred consecutive adult dissociative disorder patients who were enrolled in a dissociative disorders clinic were evaluated for self-mutilation. Self-mutilation was a common occurrence among patients with multiple personality disorder (48%), psychogenic amnesia (29%), and dissociative disorder not otherwise specified (23 %). Often the patients were amnesic for the self-mutilation. The occurrence of amnesia or persistent denial of self-injury in anyone who engages in self-mutilation makes it imperative that they be screened carefully for evidence of dissociation. Four case histories are described and illustrated with photographs
Factitious or malingered multiple personality disorder: eleven cases
p. 081-085Of 112 consecutive admissions to a dissociative disorders clinic, 10% of patients with symptoms characteristic of MPD ultimately were discovered to have factitious disorder or were malingering. They were compared with 50 MPD patients previously reported. There were few differences in demographic variables, presenting symptoms, or characteristics of alter personalities between the groups. The use of electroencephalograms and the Minnesota Multiphasic Personality Inventory was not helpful in differentiating the two groups. There was a striking difference, however, between genuine MPD and simulators for the presence of symptoms characteristic of either malingering or factitious disorder. Although some cases of simulated MPD are easy to discern, others may be extremely difficult, even for the experienced clinician. The use of collateral interviews and probing for symptoms common to factitious disorder and malingering are invaluable aids in the differential diagnosis of genuine from simulated MPD
The cross-cultural occurrence of MPD: additional cases from a recent survey
p. 124-128Multiple personality disorder (MPD) has been described as a culture-bound phenomenon, primarily indigenous to the United States. In order to test this hypothesis, we performed an extensive literature search and developed an MPD questionnaire which was mailed to 132 individuals outside of North America. The literature search found case-reports in thirteen other countries in addition to the United States and Canada. Data from the questionnaire revealed the existence of MPD in an additional six countries. Altogether thirty-two new cases of MPD were reported in nine countries and the territory of Puerto Rico. The symptomatology of these new cases was remarkably
similar to that of the cases previously reported in North America. Several new cases of DDNOS are described. We conclude that MPD is definitely not a culture-bound phenomenon and that it probably has a worldwide distribution
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Stress Disorders and Dementia in the Danish Population.
There is an association between stress and dementia. However, less is known about dementia among persons with varied stress responses and sex differences in these associations. We used this population-based cohort study to examine dementia among persons with a range of clinician-diagnosed stress disorders, as well as the interaction between stress disorders and sex in predicting dementia, in Denmark from 1995 to 2011. This study included Danes aged 40 years or older with a stress disorder diagnosis (n = 47,047) and a matched comparison cohort (n = 232,141) without a stress disorder diagnosis with data from 1995 through 2011. Diagnoses were culled from national registries. We used Cox proportional hazards regression to estimate associations between stress disorders and dementia. Risk of dementia was higher for persons with stress disorders than for persons without such diagnosis; adjusted hazard ratios ranged from 1.6 to 2.8. There was evidence of an interaction between sex and stress disorders in predicting dementia, with a higher rate of dementia among men with stress disorders except posttraumatic stress disorder, for which women had a higher rate. Results support existing evidence of an association between stress and dementia. This study contributes novel information regarding dementia risk across a range of stress responses, and interactions between stress disorders and sex
Double concerto en la mineur, op. 102 / Johannes Brahms ; Nathan Milstein, vl ; Gregor Piatigorsky, vlc ; RCA Victor Symphony Orchestra ; Fritz Reiner, dir.
Titre uniforme : Brahms, Johannes (1833-1897). Compositeur. [Concertos. Violon, violoncelle, orchestre. Op. 102. La mineur]BnF-Partenariats, Collection sonore - BelieveContient une table des matière