Results 181 to 190 of about 2,453 (294)

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

Design of a Concrete Shear Device and Investigation of the Shear Performance of New-to-Old Concrete Interfaces. [PDF]

Materials (Basel)
Tian J, Li R, Wu T, Zhang M, Xia Y, Huang J.   +5 more
europepmc   +1 more source

Tribological testing of top hammer drill buttons

, 2016
In the present work further modifications are implemented to an existing test setup for the evaluation of the wear of cemented carbide drill buttons in rock drilling applications. The test setup has been evaluated in previous diploma works, which has shown that the test successfully mimics the wear seen in rock drilling applications.
openaire   +1 more source

Proposing a Framework to Center Justice in Ambitious Science Teaching

Science Education, EarlyView.
ABSTRACT Though educators and researchers have developed shared theory and language for priorities necessary to disrupt the status quo toward more equitable science education, we lack a tool that organizes sets of teaching practices across an instructional unit to support enactment and rehearsal.
April Luehmann, Gena Merliss, Todd Campbell, Déana Scipio, Yang Zhang, Hannah Cooke, Elizabeth Wilson, Priya Pugh, Adma Gama‐Krummel   +8 more
wiley   +1 more source

Learning Trajectories for Constructing Mechanistic Explanations and the Role Played by Epistemic Knowledge

Science Education, EarlyView.
ABSTRACT Explaining scientific phenomena by unpacking their underlying mechanisms poses many challenges for high‐school students. One central challenge is synthesizing the different parts of a mechanism into a coherent whole and identifying what information is still missing, or whether further learning is required.
Ruth Molad, Michal Haskel‐Ittah
wiley   +1 more source

A Synchronous Triggering Method for Impact Artificial Seismic Source and Seismographs Based on Non-Contact Audio Detection. [PDF]

Sensors (Basel)
Wang W, Yang Y, Wang S, Wang Z, Hu J, Shi Y, Fu Z.   +6 more
europepmc   +1 more source

Possibility of electrical discharge pulse sound for hammering test [PDF]

, 2007
Yoshiaki Akematsu, Kazuro Kageyama, Naotake Mohri, Makoto Kanai, Hideaki Murayama   +4 more
core   +1 more source

Engaging the Complexities of Energy Transitions: Sociotechnical and Dualistic Insights From Crossdisciplinary Undergraduates

Science Education, EarlyView.
ABSTRACT Discourses of energy and energy transition have become increasingly prevalent in informal and formal learning spaces. Energy transitions differ across regions, contexts, and technologies. The contextual nature of energy is an opportunity for a sociotechnical approach to its study.
Desen S. Özkan, Todd Campbell, Pamela Detrois   +2 more
wiley   +1 more source

Optimization of Welding Parameters Using an Improved Hill-Climbing Algorithm Based on BP Neural Network for Multi-Bead Weld Smoothness Control. [PDF]

Materials (Basel)
Tong Y, Quan GZ, Wang HT, Xiong W.
europepmc   +1 more source

To Study the Rebound Hammer Test for Non-Destructive Testing of Structure

International Journal for Research in Applied Science and Engineering Technology, 2019
openaire   +1 more source