Results 41 to 50 of about 1,603,297 (345)

In-plane mixed-mode brittle fracture assessment of Harsin marble using HCSP specimen

Fracture and Structural Integrity
The primary objective of this manuscript is studying the effect of T-stress term (T) on the crack propagation angle (CPA) and fracture toughness of in-plane mixed mode loading by utilizing a generalized form of minimum strain energy density (SED ...
Z. Moqadaszadeh, H. Salavati, M. Rashidi Moghaddam   +2 more
doaj   +1 more source

Elastic Properties of Carbon nanotubes : An atomistic approach

, 2007
Energetically the single sheet of graphite (graphene) is more stable than the nanotube. The energy difference between the two systems can be directly related to the strain energy involved in rolling up the graphene sheet to form the nanotube.
Cherian, Roby, Mahadevan, Priya
core   +1 more source

Relative Stability and Local Curvature Analysis in Carbon Nanotori [PDF]

, 2015
We introduce a concise formalism to characterize nanometer-sized tori based on carbon nanotubes and to determine their stability by combining {\em ab initio} density functional calculations with a continuum elasticity theory approach that requires only ...
Chuang, Chern, Guan, Jie, Jin, Bih-Yaw, Tomanek, David, Witalka, David, Zhu, Zhen   +5 more
core   +2 more sources

Finite-element modelling of frictional behaviour between oesophagus and endoscope

Biosurface and Biotribology, 2020
The endoscopy is the most direct and effective means for digestive tract diseases. Medical workers can conduct a series of manipulations with the help of endoscope, including checking, removing, stripping the diseased tissue or placing the stent.
Chengxiong Lin, Pan Ren, Wei Li, Hengyi Deng, Zhongrong Zhou   +4 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Enthalpy of Formation of Carbocycles: A Precise Theoretical Determination of Experimentally Imprecise Measurements.

Chemical Thermodynamics and Thermal Analysis, 2023
Despite being one of the best-known families of organic compounds, the fact that hydrocarbons exhibit a rich variety of structures owing to branching, cyclization, and the presence of multiple bonds, means that many of their properties are yet to be ...
Zoi Salta, Nicola Tasinato, Joel F. Liebman, Oscar N. Ventura   +3 more
doaj   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Critical Strain Energy Levels Criterion for Structures with Lumped Parameters [PDF]

Journal of Applied and Computational Mechanics
The paper discusses the theory of critical strain energy levels for structures with lumped parameters. The theoretical assumptions and profs for common case are presented.
Leonid Stupishin, Maria Moshkevich, Marina Rynkovskaya   +2 more
doaj   +1 more source

Assessing The Dead Loads Effect on the Dynamic Behavior of Plates by Using Finite Elements Method [PDF]

Engineering and Technology Journal, 2007
In this research, a rectangular plate element for the finite elementsmethod, which takes into consideration the effect of dead loads, is proposed.The element stiffness matrix that includes the effect of dead loads is derived.
Abbas Allawi
doaj   +1 more source