Results 71 to 80 of about 83,680 (288)

Student Understanding of Rotational and Rolling Motion Concepts [PDF]

open access: yes, 2007
Provides pedagogical insight concerning learners' pre-conceptions and misconceptions about torque and rolling motion The resource being annotated is: http://www.dlese.org/dds/catalog_DLESE-000-000-006-235 ...
Lamont-Doherty Earth Observatory, Columbia University
core  

A predictive fatigue life model for anodized 7050 aluminium alloy [PDF]

open access: yes, 2013
The objective of this study is to predict fatigue life of anodized 7050 aluminum alloy specimens. In the case of anodized 7050-T7451 alloy, fractographic observations of fatigue tested specimens showed that pickling pits were the predominant sites for ...
Chaussumier, Michel   +4 more
core   +4 more sources

Parallel 3D Bioprinting on SLIPS‐Microarrays

open access: yesAdvanced Functional Materials, EarlyView.
This work introduces the first truly parallel 3D bioprinting method, enabling both the simultaneous fabrication of hundreds of cell laden hydrogel 3D structures and their HTS in individual liquid compartments. By integrating Digital Light Processing (DLP) stereolithography with functional micropatterns, the platform decouples printing time from array ...
Julius von Padberg   +3 more
wiley   +1 more source

Kinematic and force parameters of an elastic wheel when rolling on a flat rigid surface [PDF]

open access: yesBIO Web of Conferences
The implementation of forces and moments applied to the wheels of a vehicle occurs in the zone of contact of the wheels with the supporting surface, and therefore the analytical determination of their force and kinematic parameters should be based on ...
Mamaev Alexey   +2 more
doaj   +1 more source

Present state of research on narrow wheels: a prerequisite for traction studies on non-lug narrow wheels [PDF]

open access: yes, 2011
The use of narrow wheels as traction members of simple agricultural machinery and equipment has been investigated. This equipment can be easily acquired and maintained by low income earners and the rural dwellers whose occupation is predominantly farming.
Ahmad, Desa   +3 more
core   +1 more source

Competition of mixing and segregation in rotating cylinders

open access: yes, 1998
Using discrete element methods, we study numerically the dynamics of the size segregation process of binary particle mixtures in three-dimensional rotating drums, operated in the continuous flow regime.
Christian M. Dury   +4 more
core   +1 more source

Engineering Strategies for Stable and Long‐Life Alkaline Zinc‐Based Flow Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Alkaline zinc‐based flow batteries face persistent challenges from unstable zinc deposition, including dendrite growth, passivation, corrosion, and hydrogen evolution, which severely limit cycling stability. Current research addresses these issues through coordinated electrode structuring, electrolyte regulation, and membrane design to control zinc ...
Yuran Bai   +6 more
wiley   +1 more source

The effect of contact torques on porosity of cohesive powders

open access: yes, 2004
The porosity of uniaxially compacted cohesive powders depends on the applied stress (including gravity). The case, where these stresses are weak, is considered.
Bartels, Guido   +4 more
core   +1 more source

Atomic Layer Deposition in Transistors and Monolithic 3D Integration

open access: yesAdvanced Functional Materials, EarlyView.
Transistors are fundamental building blocks of modern electronics. This review summarizes recent progress in atomic layer deposition (ALD) for the synthesis of two‐dimensional (2D) metal oxides and transition‐metal dichalcogenides (TMDCs), with particular emphasis on their enabling role in monolithic three‐dimensional (M3D) integration for next ...
Yue Liu   +5 more
wiley   +1 more source

Numerical analysis of thermal-hydraulic characteristics of grid positioned triangular fuel assemblies in lead-cooled fast reactor under ocean conditions

open access: yesCase Studies in Thermal Engineering
The lead-based fast reactor is a promising fourth generation reactor type, which has good natural circulation capability, great fuel proliferation potential, high safety, and easy miniaturization.
Yang Liu, Qianwan Shi, Lu Zhang
doaj   +1 more source

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