Results 41 to 50 of about 1,923 (205)

Fish Scales: A Multifunctional Biomaterial from Nature

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Fish scales demonstrate nature's solution to impact protection through overlapping multilayered architecture. This biological design combines mineralized surfaces with collagen networks to achieve both flexibility and fracture resistance. The structural principles inspire advanced protective materials and biomedical implants, where damage tolerance ...
Liyao Dong, Xiaojie Sun, Xiguang Chen
wiley   +1 more source

Multi-objective optimized design for modified cycloid-pin gear drive mechanism based on load-bearing capacity

Journal of Advanced Mechanical Design, Systems, and Manufacturing
Rotate vector (RV) reducers are typical deceleration elements that moderate and increase torsion. They are widely applied in industrial robots and automatic machinery with the superiorities of compact structure, high precision, and overload resistance ...
Song GAO, Yueming ZHANG, Shuting JI, Yiwan LI, Wentai LI   +4 more
doaj   +1 more source

Isolated in the highlands, found in the museum: A new species of Characidium (Crenuchidae) from a Bolivian National Park, with a CT scan revealing features

Journal of Fish Biology, EarlyView.
Abstract A new species of Characidium is described from a small, isolated river in the highland areas of Noel Kempff Mercado National Park, Bolivia. The new taxon can be diagnosed by the presence of a relatively broad and conspicuous dark midlateral stripe extending from the tip of snout to the base of the caudal fin, markedly darker than the vertical ...
Leonardo Oliveira‐Silva, Karina Or, Angela Zanata, Scott A. Schaefer   +3 more
wiley   +1 more source

Active chiral particles under confinement: surface currents and bulk accumulation phenomena [PDF]

, 2018
In this work, we study the stationary behavior of an assembly of independent chiral active particles under confinement by employing an extension of the active Ornstein-Uhlenbeck model. The chirality modeled by means of an effective torque term leads to a
Caprini, Lorenzo, Marconi, Umberto Marini Bettolo   +1 more
core   +2 more sources

Magnetron Sputtering Synthesis of La‐Doped BiFeO3 Thin Films and Enhanced Exchange Bias in CoFeB/Bi1‐xLaxFeO3 Heterostructures

Advanced Physics Research, Volume 5, Issue 5, May 2026.
This study explores the epitaxial growth of high‐quality La‐doped BiFeO3 (BLFO) thin films at 550 °C using magnetron sputtering. The films exhibit good ferroelectric properties and low leakage current. A BLFO/CoFeB heterostructure is constructed, achieving an exchange bias field exceeding the coercive field at room temperature.
Zhiqin Zhou, Ligang Bai, Chen Qi, Xiaoyang Lin, Ivair Aparecido dos Santos, Gustavo Sanguino Dias, Luiz Fernanado Cótica, Weisheng Zhao, Yanxue Chen, Tianxiao Nie, Guodong Wei   +10 more
wiley   +1 more source

Analysis of the Modification and Backlash of High Precision Cycloid Drive

Jixie chuandong, 2015
The backlash is an important indicator of cycloid drive,and the modification is a major factor.Comprehensively considering the bearing capacity and backlash of the whole machine,the modification optimization of the cycloid gear is carried out by using ...
Hou Nai, Wang Changlu, Zhang Liyong, Huang Shoufeng, Zhou Hongkai, Li Yakang   +5 more
doaj  

Hydraulic motor with swinging planetary drive of bevel gears and its force & efficiency calculation [PDF]

, 2007
A new kind of hydraulic motor with offset swining planetary drive of bevel gears and the application in Capstan is presented; the researched of the calculation of the efficiency of the mechanism is made.
Huran, Liu, Liu, Quanhong, Song, Deyu, Wang, J, Zhao, Dongfu   +4 more
core  

An Aeolian Depositional Sequence Shaped by Near‐Surface Water at the Base of the Layered Sulfate Unit, Gale Crater, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract The basal strata of the orbitally defined Layered Sulfate unit (LSu) in Gale crater, Mars, marks the end of a major mineralogical transition from clay‐to sulfate‐bearing stratigraphy. This has previously been attributed to a period of significant aridification of Gale's climate. Here, we present ground‐based observations by the Curiosity rover
Amelie L. Roberts, Sanjeev Gupta, Aster Cowart, Lauren A. Edgar, William Rapin, William E. Dietrich, Edwin Kite, Steven G. Banham, Joel M. Davis, Claire A. Mondro, Dave M. Rubin, John P. Grotzinger, William Farrand, Linda Kah, Kevin Lewis, Alexander Bryk, Catherine Weitz, Rachel Y. Sheppard, Gwénaël Caravaca, Stéphane Le Mouélic, Emma R. Harris, Patrick J. Gasda, Aileen Yingst, Deirdra Fey, Jeffrey R. Johnson, Gerhard P. Paar, Abigail A. Fraeman, Ashwin R. Vasavada   +27 more
wiley   +1 more source

MODELING AND SIMULATION OF CYCLOID CURVES WITH APPLICATION IN ROBOTICS [PDF]

, 2010
Mechanical power transmission by reducing the rotating speed under a constant transmission ratio represents the function of a large group of products known as speed reducers. Cycloid gearing roller (invented by L.
Adrian RUNCEANU, Lucia PASCALE, Luminiţa DUŢĂ, Paul Ciprian PATIC   +3 more
core  

Modeling the Detectability of Energetic Heliospheric Ions at Pluto During the New Horizons Flyby

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract We investigate the detectability of heliospheric helium ions at energies up to 100 keV by the New Horizons (NH) spacecraft during its flyby through Pluto's induced magnetosphere. The Pluto Energetic Particle Spectrometer Science Investigation energetic ion detector observed a reduction in their flux by an order of magnitude as the spacecraft ...
Randall T. Ruch, Sven Simon, Peter Kollmann, C. Michael Haynes   +3 more
wiley   +1 more source