Results 41 to 50 of about 1,392,897 (308)

Dynamic Analysis of Multibody Mechanical Systems

Machines
Dynamic analysis of multibody systems (MBSs) is critical in modern mechanical engineering [...]
Carmine Maria Pappalardo
doaj   +1 more source

PMMA–Y2O3 (Eu3+) nanocomposites: optical and mechanical properties [PDF]

Journal of the Serbian Chemical Society, 2011
The results of a study related to the processing and characterization of PMMA–Y2O3 (Eu3+) nanocomposites are presented herein. The nanocom­posite samples were prepared using a laboratory mixing molder with different contents of Eu-ion doped Y2O3 ...
SALAH S. MUSBAH, VESNA J. RADOJEVIĆ, NADEŽDA V. BORNA, DUŠICA B. STOJANOVIĆ, MIROSLAV D. DRAMIĆANIN, ALEKSANDAR D. MARINKOVIĆ, RADOSLAV R. ALEKSIĆ   +6 more
doaj  

Development of polymer network of phenolic and epoxies resins mixed with linseed oil: pilot study [PDF]

, 2010
Epoxy resin was mixed with phenolic resins in different percentages by weight. Composite 40/60 means the proportion by weight of epoxy resin is 40 percent. It was found that only composites 50/50 and 40/60 could be cured in ambient conditions. Dynamic
Cardona, F., Ku, H., Munoz, J.-C., Rogers, D.   +3 more
core   +2 more sources

Enhancing stress measurements accuracy control in the construction of long-span bridges

Scientific Reports
This paper introduces new contributions for construction procedures designed to enhance the robustness and precision of stress control in active anchorage and short presetressing units for long-span bridges, particularly addressing potential technical ...
Alvaro Gaute-Alonso, David Garcia-Sanchez, Óscar Ramón Ramos-Gutierrez, Vasileios Ntertimanis   +3 more
doaj   +1 more source

Electric memory effects in styrene-butadiene rubber, containing electric inclusions of highly aromatic oil [PDF]

Journal of Advanced Dielectrics, 2018
It was determined that samples of styrene-butadiene rubber (SBR), containing highly aromatic oil, exhibit memory effects giving rise to dynamic elastic modulus, damping and internal stresses degree which can be tailored depending on the applied electric ...
Ricardo Raúl Mocellini, Federico Guillermo Bonifacich, Fernando Daniel Lambri, Mariel Antonella Lambri, Griselda Irene Zelada, Osvaldo Agustín Lambri   +5 more
doaj   +1 more source

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

Dynamic Analysis and Optimization of Mechanical Impactor

Shiyou jixie, 2020
To address the problems of small impact energy, short continuous working time and poor stability in deep wells of the existing impactors, a new type of mechanical impactor is designed.
Liu Yu, Feng Jin, Huang Xinyu, Chen Wei
doaj  

A comparative experimental study on damping properties of epoxy nanocomposite beams reinforced with carbon nanotubes and graphene nanoplatelets

Nanotechnology Reviews, 2022
Carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) are extremely ideal nanofillers for applications in damping polymer. This work explores the damping behavior of polymer nanocomposite beams made of epoxy resin reinforced with CNTs and GNPs ...
Pan Shengqi, Feng Jigang, Safaei Babak, Qin Zhaoye, Chu Fulei, Hui David   +5 more
doaj   +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

A comparative study of viscoelastic characteristics in polymer composite with respect to the damping performance and structural behavior [PDF]

Engineering and Technology Journal
This study systematically investigates the viscoelastic characteristics and damping performance of polymer composites, examining the interplay between filler morphology, matrix-filler interactions, and structural behavior.
Rafal Hameed
doaj   +1 more source