Results 61 to 70 of about 8,708,690 (320)

Microscopic theory for the time irreversibility and the entropy production

, 2017
In stochastic thermodynamics, the entropy production of a thermodynamic system is defined by the irreversibility measured by the logarithm of the ratio of the path probabilities in the forward and reverse processes.
Chun, Hyun-Myung, Noh, Jae Dong
core   +1 more source

Complexification of Gauge Theories [PDF]

, 1993
For the case of a first-class constrained system with an equivariant momentum map, we study the conditions under which the double process of reducing to the constraint surface and dividing out by the group of gauge transformations $G$ is equivalent to ...
Abraham, Arms, Arms, Arms, Arms, Ashtekar, Ashtekar, Ashtekar, Emmrich, Gambini, Giles, Goldberg, Gotay, Guillemin, Hitchin, Hochschild, J.M. Mourão, J.N. Tavares, Kirwan, Loll, Marsden, Moncrief, Moncrief, Montgomery, Ness, Prokhorov, Prokhorov, R. Loll, Rovelli, Sjamaar, Witten, Witten   +31 more
core   +3 more sources

Modeling Physical Systems [PDF]

, 2020
How can we use math to predict the behavior of physical systems? In this chapter we cover principles for modeling physical systems; differential equations, with a focus on Ordinary Differential Equations (ODEs); systems of equations; vector calculus; one-, two- and three-dimensional mechanical systems (statics and dynamics); and resistive and linear ...
Walid M. Taha, Abd-Elhamid M. Taha, Johan Thunberg   +2 more
openaire   +1 more source

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source

Cascade of Internal Wave Energy Catalyzed by Eddy‐Topography Interactions in the Deep South China Sea

Geophysical Research Letters, 2020
The intensity of deep‐ocean mixing critically shapes the global overturning circulation, but the energy cascade participating in the elevated mixing above rough topography remains poorly understood.
Qianwen Hu, Xiaodong Huang, Zhiwei Zhang, Xiaojiang Zhang, Xing Xu, Hui Sun, Chun Zhou, Wei Zhao, Jiwei Tian   +8 more
doaj   +1 more source

A Type‐3 Fuzzy Approach for Stabilization and Synchronization of Chaotic Systems: Applicable for Financial and Physical Chaotic Systems [PDF]

, 2022
Man‐Wen Tian, Yassine Bouteraa, Khalid A. Alattas, Shu‐Rong Yan, ‏Abdullah K. Alanazi, Ardashir Mohammadzadeh, Saleh Mobayen   +6 more
openalex   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Deep Learning Improves Reconstruction of Ocean Vertical Velocity

Geophysical Research Letters, 2023
Ocean vertical velocity (w) plays a key role in regulating the exchanges of mass, heat and nutrients between the surface and deep ocean. However, direct observation remains difficult due to its small magnitude and large spatiotemporal variability ...
Ruichen Zhu, Yanqin Li, Zhaohui Chen, Tianshi Du, Yueqi Zhang, Zhuoran Li, Zhiyou Jing, Haiyuan Yang, Zhao Jing, Lixin Wu   +9 more
doaj   +1 more source

Potential Implications of the Sesquiterpene Presence over the Remote Marine Boundary Layer in the Arctic Region

Atmosphere, 2023
We present reactive VOC observations over the North Pacific and the Arctic Ocean from airborne and shipborne measurements, investigating, in particular, distributions of biogenic volatile organic compounds that may be emitted from phytoplankton.
Keyhong Park, Blanca Rodriguez, Jerry Thomas, Dasa Gu, Miming Zhang, Chinmoy Sarkar, Alex Guenther, Saewung Kim   +7 more
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source