Results 41 to 50 of about 2,936,556 (303)

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

Sealing Performance of the End Fitting of a Marine Unbonded Flexible Pipe under Pressure Penetration [PDF]

Journal of Applied and Computational Mechanics, 2020
The sealing performance of end fittings is very important for offshore oil and gas pipelines. To investigate the sealing behavior of a ring-shaped wedge seal, global and local numerical models of the ring–pipe interaction have been developed based on the
Liping Tang, Wei He, Xiaohua Zhu, Yunlai Zhou   +3 more
doaj   +1 more source

Measuring wheel/rail contact stresses using ultrasound [PDF]

, 2004
The investigation of contact area and pressure distribution in a wheel/rail contact is essential information required in fatigue and wear calculations to determine design life, regrinding requirements, and maintenance schedules.
Bjorklund, S., Dwyer-Joyce, R.S., Lewis, R., Marhsall, M.B., Olofsson, O.   +4 more
core  

Local contact numbers in two dimensional packings of frictional disks

, 2009
We analyze the local structure of two dimensional packings of frictional disks numerically. We focus on the fractions x_i of particles that are in contact with i neighbors, and systematically vary the confining pressure p and friction coefficient \mu. We
Henkes, Silke, Shundyak, Kostya, van Hecke, Martin, van Saarloos, Wim   +3 more
core   +1 more source

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

Advanced Virtual Fit Technology for Precision Pressure Application in Medical Compression Waistbands

Applied Sciences
The design of medical-grade compression garments is essential for therapeutic efficacy, requiring precise pressure distribution on specific body areas.
Seonyoung Youn, Sheng Zhan, Kavita Mathur   +2 more
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Textile-Based Weft Knitted Strain Sensors: Effect of Fabric Parameters on Sensor Properties

Sensors, 2013
The design and development of textile-based strain sensors has been a focus of research and many investigators have studied this subject. This paper presents a new textile-based strain sensor design and shows the effect of base fabric parameters on its ...
William Richard Kennon, Ozgur Atalay, Muhammad Dawood Husain   +2 more
doaj   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

German Society of Biomechanics (DGfB) Young Investigator Award 2019: Proof-of-Concept of a Novel Knee Joint Simulator Allowing Rapid Motions at Physiological Muscle and Ground Reaction Forces

Frontiers in Bioengineering and Biotechnology, 2019
The in vitro determination of realistic loads acting in knee ligaments, articular cartilage, menisci and their attachments during daily activities require the creation of physiological muscle forces, ground reaction force and unconstrained kinematics ...
Florian Schall, Andreas M. Seitz, Steffen Hacker, Stefan van Drongelen, Stefan van Drongelen, Sebastian I. Wolf, Anita Ignatius, Lutz Dürselen   +7 more
doaj   +1 more source