Results 131 to 140 of about 9,050 (237)

Mechanisms reducing parasympathetic activity in chronic hypoxia

The Journal of Physiology, EarlyView.
Abstract figure legend Parasympathetic activity is reduced in chronic hypoxia, but the underlying mechanism(s) are unclear. Using β‐adrenergic blockade to isolate parasympathetic control of heart rate at sea level and after 9‐12 days at high altitude, we investigated whether (i) chemoreflex activation, (ii) increased pulmonary ventilation and/or (iii ...
Lauren E. Maier, Andrew Douglas, Katharine Foster, Elliott J. Jenkins, Liam D. Corr, Peter Rasmussen, James Anholm, Travis D. Gibbons, Phil N. Ainslie, Mike Stembridge, Christoph Siebenmann   +10 more
wiley   +1 more source

Sojourn-time-corrected receiver operating characteristic curve (ROC) for prostate specific antigen (PSA) test in population-based prostate cancer screening. [PDF]

Sci Rep, 2020
Jen HH, Chang WJ, Hsu CY, Yen AM, Auvinen A, Chen TH, Chen SL.   +6 more
europepmc   +1 more source

A Statistical Method to Schedule the First Exam Using Chest X-Ray in Lung Cancer Screening

Mathematics
We applied a recently developed statistical method to the National Lung Screening Trial (NLST) chest X-ray data, to find the optimal time for initiating chest X-ray screening in asymptomatic individuals. Incidence probability was used to control the risk
Farhin Rahman, Dongfeng Wu
doaj   +1 more source

Mean quantum sojourn time

, 1999
Summary: This article introduces the notion of mean quantum sojourn time for a quantum dynamical semigroup acting over an arbitrary von Neumann algebra. This notion is used to analyze the asymptotic behaviour of the underlying dynamics and allows one to include, as a particular case, earlier classification of states obtained in scattering theory ...
ACCARDI, LUIGI, Fernandez, C, Prado, H, Rebolledo, R.   +3 more
openaire   +3 more sources

Survival by Detection Pathway in Patients With Lung Cancer—A Nationwide Descriptive Epidemiological Study in Japan

International Journal of Cancer, Volume 159, Issue 4, Page 904-914, 15 August 2026.
Lung cancer is detected primarily through screening, incidental findings, or presentation with symptoms. In Japan, the impact of detection pathway on prognosis is poorly understood, limiting evaluation of screening effectiveness. The authors of the present study analyzed Japanese National Cancer Registry data, comparing clinical characteristics and net
Ryo Koto, Atsuki Yamamoto, Ikumi Takashima, Chikako Iwao, Jung‐ho Shin, Yuko Hayashi, Hiroshi Kitagawa, Yoshiharu Horie   +7 more
wiley   +1 more source

RATIO BETWEEN AVERAGE SOJOURN TIMES UNDER PROCESSOR SHARING AND FAIR SOJOURN PROTOCOL

, 2010
Under very general assumptions, we prove that the ratio between the average sojourn time in a queue under the processor sharing (PS) and the same queue under the fair sojourn protocol (FSP) can be bounded above, and we derive such a bound in terms of the
Yingdong Lu
core   +1 more source

Resource Allocation for Content Distribution Using Optimized Temporally‐Aware Adaptive Graph Convolutional Network in Fog Radio Access Networks

International Journal of Communication Systems, Volume 39, Issue 12, August 2026.
New multimedia applications are emerging at a rapid rate, propelling an exponential rise in mobile internet traffic and increasing the bar for next‐generation wireless networks in service quality. This indicates the rapid advancement of wireless communication technology.
Ruchi Kawatra, J. Brundha Elci, Maria Manuel Vianny D, Rajat Bhardwaj, Rakesh Kumar G, Abhijit Das   +5 more
wiley   +1 more source

Sojourn time for rank one perturbations

, 2006
We consider a self-adjoint, purely absolutely continuous operator M. Let P be a rank one operator Pu = phi such that for beta(0) H beta(0) :=M + beta P-0 has a simple eigen-value E-0 embedded in its absolutely continuous spectrum, with corresponding ...
Briet, P, Cortés, VH, Duclos, P, Fernández, C, M. A. Astaburuaga, P. Briet, P. Duclos, Asch, J, J. Asch, V. H. Cortés, C. Fernández, Astaburuaga, MA   +11 more
core   +1 more source

Sympatho‐Excitation in Pulmonary Hypertension: The Potential Role of Pulmonary Arterial Baroreceptors: An Acute Physiologic Intervention Study

Respirology, Volume 31, Issue 6, Page 621-629, June 2026.
Pulmonary arterial baroreceptors reflexively stimulate sympathetic nerve activity (SNA) in response to elevated pulmonary artery pressure and distension. In pulmonary hypertension patients, changes in muscle SNA were proportional to changes in pulmonary haemodynamics following nebulised iloprost.
Michael J. Plunkett, Ana L. C. Sayegh, Robert A. Lewis, Tanya J. McWilliams, Sasiharan Sithamparanathan, Julian F. R. Paton, James P. Fisher   +6 more
wiley   +1 more source

Variable Selection for Illness‐Death Processes Under Dual Observation Schemes

Statistics in Medicine, Volume 45, Issue 13-14, June 2026.
ABSTRACT The classical illness‐death process offers a useful framework for studying the progression of chronic disease while jointly modeling death. In many settings the time of disease progression is not observed directly, but progression status is recorded at intermittent assessment times.
Xianwei Li, Liqun Diao, Richard J. Cook
wiley   +1 more source