565 research outputs found
b --> s g g decay in the two and three Higgs doublet models with CP violating effects
We study the decay width and CP-asymmetry of the inclusive process b--> s g g
(g denotes gluon) in the three and two Higgs doublet models with complex Yukawa
couplings. We analyse the dependencies of the differential decay width and
CP-asymmetry to the s- quark energy E_s and CP violating parameter \theta. We
observe that there exist a considerable enhancement in the decay width and CP
asymmetry is at the order of 10^{-2}. Further, it is possible to predict the
sign of C_7^{eff} using the CP asymmetry.Comment: 15 pages, 7 Figures (required epsf style
FACTORS ASSOCIATED WITH HIP INVOLVEMENT AND ITS IMPACT ON TREATMENT DECISION IN PATIENTS WITH AXIAL SPONDYLOARTHRITIS; TREASURE EXPERIENCE
[Abstract Not Available
Sympathetic Skin Response and Boston Questionnaire in Carpal Tunnel Syndrome
We aimed to determine relations between the sudomotor efferent nerve fiber function and
Boston questionnaire (BQ) in idiopathic carpal tunnel syndrome (CTS). Median nerve-induced sympathetic skin responses (SSRs) evoked by wrist stimulation were recorded in 108
CTS patients and compared with those in 88 healthy volunteers. The Boston questionnaire
form (BQF) was applied to the subjects. All patients and healthy individuals were questioned
about the autonomic symptoms in the hand (red or purple skin coloration, excessive sweating, and feeling cold). The average SSR latencies of the patients with CTS were significantly
longer than those in the control group (P < 0.001). Positive significant, while weak, correlations were found between the SSR latency, autonomic symptoms, and total sympathetic
system scores. No statistically significant relationship was found between the Boston symptom severity, functional capacity scores, and SSR latency. The latter obtained through wrist
stimulation was sensitive to support the sudomotor sympathetic dysfunction in patients with
CTS. No relationship between the BQF and SSR can be related to the fact that these indices
evaluate different aspects of CTS.Ми намагалися встановити взаємовідносини судомоторної функції еферентного нерва та показників Бостонського опитувальника (BQ) у випадках ідіопатичного синдрому зап’ястного каналу (СЗК). Шкірні симпатичні відповіді
(ШСВ) відводилися після стимуляції медіанного нерва на
рівні зап’ястка у 108 пацієнтів із діагностованим СЗК; ці
характеристики порівнювались із такими у 88 здорових добровольців. Усім суб’єктам пропонували форму BQF. Усі
пацієнти та здорові особи опитувалися щодо вегетативних
симптомів, які проявлялися на кисті (червоне або пурпурове
забарвлення шкіри, надмірне потовиділення та відчуття холоду). Середнє значення латентного періоду ШСВ у пацієнтів із СЗК вірогідно перевищувало таке в контрольній групі
(P < 0.001). Істотна позитивна, хоча й слабка, кореляція
була виявлена між латентним періодом ШСВ, вегетативними симптомами та бальною загальною оцінкою стану симпатичної системи. Не було встановлено вірогідних відносин між показником тяжкості симптомів (згідно з BQF),
оцінкою функціональної здатності та латентним періодом
ШСВ. Останній параметр, отриманий при стимуляції на рівні зап’ястка, був чутливим щодо судомоторної симпатичної дисфункції у пацієнтів із цим синдромом. Відсутність
зв’язку між оцінками BQF та ШСВ може бути зумовлена
тим, що дані показники оцінюють різні аспекти ШСВ
Promiscuous Feeding Across Multiple Honey Bee Hosts Amplifies the Vectorial Capacity of \u3ci\u3eVarroa destructor\u3c/i\u3e
Varroa destructor is a cosmopolitan pest and leading cause of colony loss of the European honey bee. Historically described as a competent vector of honey bee viruses, this arthropod vector is the cause of a global pandemic of Deformed wing virus, now endemic in honeybee populations in all Varroa-infested regions. Our work shows that viral spread is driven by Varroa actively switching from one adult bee to another as they feed. Assays using fluorescent microspheres were used to indicate the movement of fluids in both directions between host and vector when Varroa feed. Therefore, Varroa could be in either an infectious or naïve state dependent upon the disease status of their host. We tested this and confirmed that the relative risk of a Varroa feeding depended on their previous host’s infectiousness. Varroa exhibit remarkable heterogeneity in their host-switching behavior, with some Varroa infrequently switching while others switch at least daily. As a result, relatively few of the most active Varroa parasitize the majority of bees. This multiple-feeding behavior has analogs in vectorial capacity models of other systems, where promiscuous feeding by individual vectors is a leading driver of vectorial capacity. We propose that the honeybee-Varroa relationship offers a unique opportunity to apply principles of vectorial capacity to a social organism, as virus transmission is both vectored and occurs through multiple host-to-host routes common to a crowded society
Design of a mobile neutron spectrometer for the Laboratori Nazionali del Gran Sasso (LNGS)
Environmental neutrons are a source of background for rare event searches (e.g., dark matter direct detection and neutrinoless double beta decay experiments) taking place in deep underground laboratories. The overwhelming majority of these neutrons are produced in the cavern walls by means of intrinsic radioactivity of the rock and concrete. Their flux and spectrum depend on time and location. Precise knowledge of this background is necessary to devise sufficient shielding and veto mechanisms, improving the sensitivity of the neutron-susceptible underground experiments. In this report, we present the design and the expected performance of a mobile neutron detector for the LNGS underground laboratory. The detector is based on capture-gated spectroscopy technique and comprises essentially a stack of plastic scintillator bars wrapped with gadolinium foils. The extensive simulation studies demonstrate that the detector will be capable of measuring ambient neutrons at low flux levels (~ n/cm/s) at LNGS, where the ambient gamma flux is by about 5 orders of magnitude larger
CP violation in the inclusive b -> s g decay in the framework of multi Higgs doublet models
We study the decay width and CP asymmetry of the inclusive process b--> s g
(g denotes gluon) in the multi Higgs doublet models with complex Yukawa
couplings, including next to leading QCD corrections. We analyse the
dependencies of the decay width and CP asymmetry on the scale \mu and CP
violating parameter \theta. We observe that there exist an enhancement in the
decay width and CP asymmetry is at the order of 10^{-2}.Comment: 11 pages, 8 Figure
LCrowdV: Generating Labeled Videos for Simulation-based Crowd Behavior Learning
We present a novel procedural framework to generate an arbitrary number of
labeled crowd videos (LCrowdV). The resulting crowd video datasets are used to
design accurate algorithms or training models for crowded scene understanding.
Our overall approach is composed of two components: a procedural simulation
framework for generating crowd movements and behaviors, and a procedural
rendering framework to generate different videos or images. Each video or image
is automatically labeled based on the environment, number of pedestrians,
density, behavior, flow, lighting conditions, viewpoint, noise, etc.
Furthermore, we can increase the realism by combining synthetically-generated
behaviors with real-world background videos. We demonstrate the benefits of
LCrowdV over prior lableled crowd datasets by improving the accuracy of
pedestrian detection and crowd behavior classification algorithms. LCrowdV
would be released on the WWW
Risultati audiologici e rate di attecchimento dell'innesto di cartilagine con pericondrio nella timpanoplastica: PACIT
La cartilagine rappresenta una delle opzioni più interessanti per il confezionamento dell'innesto nella timpanoplastica (TPL). Col presente studio presentiamo i nostri risultati audiologici e il rate di attecchimento nei casi di TPL trattati con innesto di cartilagine con pericondrio (PACIT). Sono stati analizzati, in termini di tipo di chirurgia effettuata, attecchimento dell'innesto e risultati audiologici, 194 orecchi di 191 pazienti (108 maschi, 83 donne). Sono state effettuate 127 (65,46%) TPL tipo I, 45 (23,20%) tipo II e 22 (11,34%) tipo III. Il gap medio fra via aerea e via ossea all'audiometria tonale preoperatoria è stato rispettivamente 33,74 ± 9,60, 52,58 ± 9,07, e 56,58 ± 10,27 dB HL; i valori nel postoperatorio sono stai invece 18,55 ± 9,25, 31,21 ± 4,36, and 44,84 ± 12,45 dB HL. Nel postoperatorio di è registrato un miglioramento della soglia (≥ 10dB) nel 76,81% degli orecchi valutati, con un recupero medio di 20 dB HL (range 10-40 dB). Tuttavia il 19,07% degli orecchi valutati non ha mostrato un miglioramento della soglia uditiva, e il 4,12% ha manifestato un peggioramento della soglia. L'innesto ha attecchito correttamente nel 91,24% dei casi con follow-up di almeno 13 mesi con una media di 68,64 mesi, mentre si è registrato un fallimento nel 8,76% dei casi. In considerazione dei livelli postoperatori della soglia uditiva e dell'elevato rate di attecchimenti registrato, il presente studio ha evidenziato l'efficacia a lungo termine dell'innesto di cartilagine con pericondrio
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