Results 51 to 60 of about 143,386 (239)

Magnetoactive Metamaterials: A State‐of‐the‐Art Review

open access: yesAdvanced Engineering Materials, Volume 27, Issue 23, December 2025.
Magnetoactive metamaterials combine magnetoactive composites with architected metastructures to enable contactless, tunable control of mechanical, acoustic, and elastic properties. This review highlights recent advances in their design, fabrication, and applications in soft robotics, biomedical devices, and adaptive structures and outlines future ...
Seyyedmohammad Aghamiri, Ramin Sedaghati
wiley   +1 more source

无侧隙双滚子包络环面蜗杆传动的啮合性能分析

open access: yesJixie chuandong, 2009
Based on the space engagement theory,the meshing function of the non-backlash hourglass worm gearing,the tooth surface equations of worm and the contacting line equation of worm gear are established.
王凯, 王进戈, 邓星桥
doaj  

How Does a Delicate Insect Wing Resist Damage? Chitin Orientation Is Adapted to the Mechanical Demands at the Nanoscale

open access: yesAdvanced Materials, Volume 37, Issue 51, December 23, 2025.
Nanoscale chitin fiber orientations in the insect wing play a critical role in adapting to complex mechanical demands. These findings reveal two distinct and functionally adaptive chitin orientation patterns in the membranes that vary regionally, optimizing mechanical resilience and deformation control.
Chuchu Li   +5 more
wiley   +1 more source

Dual‐Interface Symmetrical‐Structure Solar Evaporators with Overturning Controllable Salt for High‐Efficiency Desalination

open access: yesSmall Structures, Volume 6, Issue 12, December 2025.
We developed a cotton fabric/MoS2 composite by coating cotton with a MoS2/dopamine solution. This dual‐interface symmetrical solar evaporator (DS‐SFE)exibits self‐cleaning and salt‐rejection properties. It achieves 95.5% solar absorption and a 40.0 kg m−2water supply flux.
Jiugang Li   +9 more
wiley   +1 more source

From “audit machines” to tech‐savvy auditors: Auditors' quest for professional security with respect to digital transformation

open access: yesContemporary Accounting Research, Volume 42, Issue 4, Page 2714-2745, Winter 2025.
Abstract In recent years, the Big 4 firms have embarked on digital transformation projects that have the potential to throw auditors' daily practice into turmoil. This study looks at the auditors' quest for professional security—namely, their confidence in the fundamental features of their profession.
Pier‐Luc Lajoie, Yves Gendron
wiley   +1 more source

The research on the modeling of dual-cone double enveloping hourglass worm gear pair

open access: yes上海师范大学学报. 自然科学版, 2013
Up to now there is no specialized,efficient,general-purpose modeling method of dual-cone double enveloping hourglass worm gear pair.In this paper,based on the spatial meshing theory,a parameterized mathematical model of the dual-cone double enveloping ...
LI Shaoxiang, LIN Jing
doaj  

Hourglass Worm Gearing with Worm Teeth Generated by High-Speed Screw Cutting Method. Manufacturing of High-Speed Hourglass Worm Screw Cutting Machine and Performance Test Results of the Worm Gear Generated by this New Machine.

open access: yesJSME International Journal Series C, 2001
Authors reported theory of hourglass worm gearing whose worm is generated by high speed screw generating method, on previous report. CNC high speed hourglass worm generating machine has been developed according to the theory. And worm cutting test and performance test of worm gearing was made.
Akiyo HORIUCHI, Minoru MAKI
openaire   +2 more sources

Towards reconciling structure and function in the nuclear pore complex [PDF]

open access: yes, 2018
The spatial separation between the cytoplasm and the cell nucleus necessitates the continuous exchange of macromolecular cargo across the double-membraned nuclear envelope.
Aebi, Ueli   +2 more
core  

Could photoperiodic responses have evolved before the emergence of circadian clocks?

open access: yesNew Phytologist, Volume 248, Issue 6, Page 2707-2713, December 2025.
Summary Plants use photoperiod (i.e. day length) as a seasonal cue for timing when to flower. This ability, known as photoperiodism, also underlies phenomena such as migration, seasonal reproduction, and hibernation in animals. Because a circadian (daily) clock underlies the day/night length timing mechanism in most organisms, it has been generally ...
Maria Luísa Jabbur   +1 more
wiley   +1 more source

Machining and Performance Testing of Inclined Double-roller Enveloping Hourglass Worm Drive

open access: yesJixie chuandong, 2018
To eliminate the gear backlash,a new inclined double-roller enveloping hourglass worm drive is proposed. The meshing performance is analyzed based on the meshing geometry of inclined double-roller enveloping hourglass worm drive.
Liu Zaixin   +3 more
doaj  

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