Results 21 to 30 of about 5,957,804 (303)

How size and trigger matter: analyzing rainfall- and earthquake-triggered landslide inventories and their causal relation in the Koshi River basin, central Himalaya [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2019
Inventories of landslides caused by different triggering mechanisms, such as earthquakes, extreme rainfall events or anthropogenic activities, may show different characteristics in terms of distribution, contributing factors and frequency–area ...
J. Zhang   +9 more
doaj   +1 more source

TEACHING DESCRIPTIVE GEOMETRY – CONSTRUCTING AND DEVELOPING THE SURFACES OF SOLIDS

open access: yesJournal of Industrial Design and Engineering Graphics, 2019
The paper presents applications developed for teaching descriptive geometry – representation of solids and development of the surface of the solids. The purpose of the applications presented is to enable the development and improvement of the spatial ...
Ramona Clinciu
doaj   +4 more sources

Characterization of Friction and Wear Behavior of Friction Modifiers used in Wheel-Rail Contacts

open access: yesInternational Journal of Prognostics and Health Management, 2017
Reliable traction between wheel and rail is an important issue in the railway industry. To reduce variations in the coefficient of friction, so-called “friction modifiers” (carrier with particles) are used. Twin-disk tests were done with three commercial
M. A. Oomen, R. Bosman, P.M. Lugt
doaj   +1 more source

Charged-Surface Instability Development in Liquid Helium; Exact Solutions [PDF]

open access: yes, 2000
The nonlinear dynamics of charged-surface instability development was investigated for liquid helium far above the critical point. It is found that, if the surface charge completely screens the field above the surface, the equations of three-dimensional (
A. A. Levchenko   +8 more
core   +2 more sources

High-resolution mapping of monthly industrial water withdrawal in China from 1965 to 2020 [PDF]

open access: yesEarth System Science Data
High-quality gridded data on industrial water use are vital for research and water resource management. However, such data in China usually have low accuracy.
C. Hou   +11 more
doaj   +1 more source

Simulation of Islamic Ceramics Using Different Firing Techniques [PDF]

open access: yesJournal of Architecture, Art & Humanistic Science, 2022
Ceramics is one of the most important artistic handcrafts that were known for Arab Artists since Islam appeared to life. The main reason of this was the role that ceramics played in fulfilling the idea of Islamic civilization on different sides.
Mohamad El Gindy   +2 more
doaj   +1 more source

Zirconia as a support for catalysts: Evolution of the texture and structure on calcination in air [PDF]

open access: yes, 1990
Zirconia samples, prepared by precipitation from a solution of zirconyl chloride at a constant pH of 10, were calcined in flowing air at temperatures up to 850°C in order to study the development and stability of the porous texture in conjunction with ...
Burggraaf, A.J.   +4 more
core   +3 more sources

Development of a fretting-fatigue mapping concept: The effect of material properties and surface treatments [PDF]

open access: yes, 2009
Fretting-fatigue induced by combined localized cyclic contact motion and external bulk fatigue loadings may result in premature and dramatic failure of the contacting components.
Araújo   +32 more
core   +1 more source

Research on the multi-granularity method of role engineering

open access: yesFrontiers in Computational Neuroscience, 2022
The role-based access control model (RBAC) is an access control approach oriented to enterprise security policy, which plays a leading role in the field of access control due to its good applicability and flexibility.
Yongmei Jiao   +3 more
doaj   +1 more source

Viscous potential flow analysis of peripheral heavy ion collisions [PDF]

open access: yes, 2013
The conditions for the development of a Kelvin-Helmholtz Instability (KHI) for the Quark-gluon Plasma (QGP) flow in a peripheral heavy-ion collision is investigated.
Csernai, L. P., Néda, Z., Wang, D. J.
core   +2 more sources

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