Results 101 to 110 of about 6,812,320 (386)

Number fluctuations in cold quantum gases

open access: yes, 2007
In ultracold gases many experiments use atom imaging as a basic observable. The resulting image is averaged over a number of realizations and mostly only this average is used. Only recently the noise has been measured to extract physical information.
D. Pines   +5 more
core   +1 more source

Relativistic BCS-BEC crossover in a boson-fermion model [PDF]

open access: yes, 2006
We investigate the crossover from Bardeen-Cooper-Schrieffer (BCS) pairing to a Bose-Einstein condensate (BEC) in a relativistic superfluid within a boson-fermion model.
A. I. Larkin   +10 more
core   +2 more sources

Reevaluating the Activity of ZIF‐8 Based FeNCs for Electrochemical Ammonia Production

open access: yesAdvanced Functional Materials, EarlyView.
Though receiving much attention, the field of electrochemical nitrogen reduction reaction (eNRR) to ammonia is marked by doubts about whether this reaction is possible in aqueous media. This work sheds light on this question for iron single‐atom on N‐doped carbon (FeNC) catalysts—a class of well‐known catalysts that is also worth testing for the sister
Caroline Schneider   +6 more
wiley   +1 more source

Relation between Air Pollution Exposure and Onset of Acute Coronary Syndrome in Tehran Heart Center Using a Case-Crossover Design

open access: yesمجله اپیدمیولوژی ایران, 2007
Background & Objectives: Recent evidence suggests that long-term exposure to air pollution contributes to progression of atherosclerosis and the risk of cardiac morbidity and mortality; short-term exposure may also lead to thrombosis and acute ischemic ...
M Qorbani   +5 more
doaj  

A data visualisation method for assessing exposure misclassification in case-crossover studies: the example of tricyclic antidepressants and the risk of hip fracture in older people

open access: yesBMC Medical Research Methodology, 2021
Background The case-crossover design is suited to medication safety studies but is vulnerable to exposure misclassification. Using the example of tricyclic antidepressants and the risk of hip fracture, we present a data visualisation tool for observing ...
Michael J. Leach   +2 more
doaj   +1 more source

Nonequilibrium characteristics in all-superconducting tunnel structures

open access: yes, 2006
We study the nonequilibrium characteristics of superconducting tunnel structures in the case when one of the superconductors is a small island confined between large superconductors. The state of this island can be probed for example via the supercurrent
B. L. Altshuler   +7 more
core   +1 more source

Case-crossover Studies of Therapeutics [PDF]

open access: yesEpidemiology, 2013
Self-controlled analysis methods implicitly adjust for time-invariant confounding within individuals. A person's prognosis often varies over time and affects both therapy choice and subsequent health outcomes. Current approaches may not be able to fully address this within-person confounding.
Shirley V, Wang   +3 more
openaire   +2 more sources

Dynamic Control of Synaptic Plasticity by Competing Ferroelectric and Trap‐Assisted Switching in IGZO Transistors with Al2O3/HfO2 Dielectrics

open access: yesAdvanced Functional Materials, EarlyView.
A frequency‐tunable ferroelectric synaptic transistor based on a buried‐gate InGaZnO channel and Al2O3/HfO2 dielectric stack exhibits linear and reversible weight updates using single‐polarity pulses. By switching between ferroelectric and trap‐assisted modes depending on input frequency, the device simplifies neuromorphic circuit design and achieves ...
Ojun Kwon   +8 more
wiley   +1 more source

Climate Change Projections for Stroke Incidence in Taiwan: Impact of 2 °C and 4 °C Global Warming Level

open access: yesJournal of Epidemiology and Global Health
Objectives This study aimed to establish the exposure-lag-response effect between daily maximum temperature and stroke-related emergency department visits and to project heat-induced stroke impacts under global warming levels (GWL) of 2 °C and 4 °C ...
Wei-Te Wu   +9 more
doaj   +1 more source

Widowhood disparities in nonaccidental mortality attributable to heat waves and ozone

open access: yesEco-Environment & Health
Emerging evidence suggests that heat waves and ozone (O3) contribute to increased mortality risks. Since widowhood is a common event that can increase individuals' susceptibility to the environment, it is of great importance and interest to elucidate the
Ruijun Xu   +19 more
doaj   +1 more source

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