Results 51 to 60 of about 3,042,639 (351)

Electroencephalogram (EEG) stress analysis on alpha/beta ratio and theta/beta ratio

Indonesian Journal of Electrical Engineering and Computer Science, 2020
<span>This paper presents an analysis of stress feature using the power ratio of frequency bands including Alpha to Beta and Theta to Beta. In this study, electroencephalography (EEG) acquisition tool was utilized to collect brain signals from 40 subjects and objectively reflected stress features induced by virtual reality (VR) technology.
Tee, Y. W., Mohd. Aris, S. A.
openaire   +3 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

True stress and Poisson's ratio of tendons during loading [PDF]

Journal of Biomechanics, 2011
Excessive axial tension is very likely involved in the aetiology of tendon lesions, and the most appropriate indicator of tendon stress state is the true stress, the ratio of instantaneous load to instantaneous cross-sectional area (CSA). Difficulties to measure tendon CSA during tension often led to approximate true stress by assuming that CSA is ...
Vergari, Claudio, Pourcelot, Philippe, Holden, Laurène, Ravary-Plumioën, Bérangère, Gerard, Guillaume, Laugier, Pascal, Mitton, David, Crevier-Denoix, Nathalie   +7 more
openaire   +3 more sources

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

A simple fatigue methodology for filled natural rubbers under positive and negative R ratios

Materials Research Express
This paper suggests a simple methodology to optimize the uniaxial fatigue predictions for filled natural rubbers. In this study, the stress ratio $R$ effect on rubber fatigue life is investigated numerically.
Salma Belkhiria, Anis Abroug, Raouf Fathallah   +2 more
doaj   +1 more source

Incompressible viscous flow near the leading edge of a flat plate admitting slip [PDF]

, 1975
The shear stress at the leading edge, calculated on basis of the Navier-Stokes equations and the no-slip boundary condition, approaches infinity. However, taking into account the mean free path of the molecules, which implies admitting a certain slip ...
A. E. P. Veldman, A. I. van de Vooren, A. I. Vooren van de, A. Yoshizawa, D. G. Anderson, E. F. F. Botta, G. F. Carrier   +6 more
core   +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

Experimental Study on the Dynamic Modulus and Damping Ratio of Compacted Loess under Circular Dynamic Stress Paths

Advances in Civil Engineering, 2021
Dynamic loads such as earthquakes and traffic will simultaneously generate vertical dynamic stress and horizontal shear stress in the foundation soil. When the vertical dynamic stress amplitude is twice the horizontal shear dynamic stress amplitude, and ...
Liguo Yang, Shengjun Shao, Zhi Wang
doaj   +1 more source

Peristaltic Pumping of Blood Through Small Vessels of Varying Cross-section

, 2012
The paper is devoted to a study of the peristaltic motion of blood in the micro-circulatory system. The vessel is considered to be of varying cross-section. The progressive peristaltic waves are taken to be of sinusoidal nature. Blood is considered to be
Anand, Barbee, Bhargava, Blair, Bohme, Brassur, Bugliarello, Chakraborty, Charm, Charm, Chien, Fung, Fung, Gupta, Guyton, Hayat, Higdon, Huang, J. C. Misra, Jaffrin, Jimenez-Lozano, Jimenez-Lozano, Kwack, Lardner, Lee, Li, Maiti, Maiti, Malek, Masud, Merrill, Mishra, Misra, Misra, Misra, Misra, Misra, Misra, Misra, Misra, Misra, Misra, Misra, Misra, Pozrikidis, Provost, Rand, S. Maiti, Selvarajan, Shapiro, Srivastava, Srivastava, Srivastava, Takabatake, Usha, Usha, Wang, White, Wiederhielm, Wiedman, Xue, Yaniv   +61 more
core   +1 more source

Crosstalk between the ribosome quality control‐associated E3 ubiquitin ligases LTN1 and RNF10

FEBS Letters, EarlyView.
Loss of the E3 ligase LTN1, the ubiquitin‐like modifier UFM1, or the deubiquitinating enzyme UFSP2 disrupts endoplasmic reticulum–ribosome quality control (ER‐RQC), a pathway that removes stalled ribosomes and faulty proteins. This disruption may trigger a compensatory response to ER‐RQC defects, including increased expression of the E3 ligase RNF10 ...
Yuxi Huang, Satoshi Hashimoto, Sota Ito, Chisato Kikuguchi, Miho Hoshi, Kiyoshi Yamaguchi, Yoichi Furukawa, Toru Suzuki, Toshifumi Inada   +8 more
wiley   +1 more source