Results 81 to 90 of about 2,896,907 (259)

Defining Treatment‐Resistant Bipolar Depression: Recommendations From the ISBD Task Force

open access: yesBipolar Disorders, EarlyView.
ABSTRACT Objective Despite the availability of approved treatments, a substantial proportion of patients with bipolar disorder experience treatment‐resistant bipolar depression (TRBD), characterized by persistent depressive symptoms unresponsive to standard therapies. However, a universally accepted definition of TRBD is lacking.
Eduard Vieta   +29 more
wiley   +1 more source

One-Particle Representation of Heat Conduction Described within the Scope of the Second Law. [PDF]

open access: yesPLoS ONE, 2016
The Carnot cycle and its deduction of maximum conversion efficiency of heat inputted and outputted isothermally at different temperatures necessitated the construction of isothermal and adiabatic pathways within the cycle that were mechanically ...
Christopher Gunaseelan Jesudason
doaj   +1 more source

Optimal refrigerator

open access: yes, 2010
We study a refrigerator model which consists of two $n$-level systems interacting via a pulsed external field. Each system couples to its own thermal bath at temperatures $T_h$ and $T_c$, respectively ($\theta\equiv T_c ...
A. W. Marshall   +11 more
core   +1 more source

Optimizing the Straight Leg Raise Maneuver to Improve Prediction of Conclusive Gastro‐Esophageal Reflux Disease

open access: yesNeurogastroenterology &Motility, EarlyView.
The SLR maneuver is a valuable component of GERD evaluation. By establishing optimal thresholds for both effective EGJ challenge and accurate GERD prediction, we provide another step for standardized implementation in clinical practice. ABSTRACT Background Gastroesophageal reflux disease (GERD) arises from dysfunction of the anti‐reflux barrier.
Stefano Siboni   +7 more
wiley   +1 more source

Efficiency at maximum power: An analytically solvable model for stochastic heat engines

open access: yes, 2007
We study a class of cyclic Brownian heat engines in the framework of finite-time thermodynamics. For infinitely long cycle times, the engine works at the Carnot efficiency limit producing, however, zero power. For the efficiency at maximum power, we find
Feynman R. P.   +6 more
core   +1 more source

Where Mathematical Symbols Come From

open access: yesTopics in Cognitive Science, EarlyView.
Abstract There is a sense in which the symbols used in mathematical expressions and formulas are arbitrary. After all, arithmetic would be no different if we would replace the symbols ‘+$+$’ or ‘8’ by different symbols. Nevertheless, the shape of many mathematical symbols is in fact well motivated in practice.
Dirk Schlimm
wiley   +1 more source

AI‐Driven Defect Engineering for Advanced Thermoelectric Materials

open access: yesAdvanced Materials, Volume 37, Issue 35, September 4, 2025.
This review presents how AI accelerates the design of defect‐tuned thermoelectric materials. By integrating machine learning with high‐throughput data and physics‐informed representations, it enables efficient prediction of thermoelectric performance from complex defect landscapes.
Chu‐Liang Fu   +9 more
wiley   +1 more source

Correlation-boosted quantum engine: A proof-of-principle demonstration

open access: yesPhysical Review Research, 2023
Employing currently available quantum technology, we design and implement a nonclassically correlated SWAP heat engine that allows to achieve an efficiency above the standard Carnot limit.
Marcela Herrera   +3 more
doaj   +1 more source

Fresh Look and Understanding on Carnot Cycle

open access: yesEnergy Procedia, 2014
AbstractCarnot cycle and theorem are major contributions of classical thermodynamics since proposed in 1824, while Carnot failed to prove it because of the influence of Caloric theory of heat. Then in 1850, Clausius confirmed Carnot theorem via reduction to absurdity and put forward the second law of thermodynamics. From then on, the theory that Carnot
Xin Wang   +4 more
openaire   +2 more sources

High‐Endurance and Energy‐Efficient All‐Optical Programming of Scalable Silicon Waveguides with Integrated Phase‐Change Material Patches

open access: yesAdvanced Optical Materials, Volume 13, Issue 25, September 3, 2025.
Phase change materials are integrated into silicon photonic circuits via 200 mm industrial wafer processes. Interferometric optical characterization reveals switching thresholds, transmission modulation, phase shifts, and record endurance (>108 cycles).
Rajath Sawant   +11 more
wiley   +1 more source

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