Results 1 to 10 of about 3,115,306 (268)

Junction Properties Interpretation of Textile Geogrids Using Multi-Junction Clamp

open access: yesApplied Sciences, 2021
In this paper, multi-junction clamp was used for junction strength evaluation under 20, 50 and 100 mm/min of strain rate at ambient condition. One~eight rib specimens were gripped in the clamps and each gage length was 50 mm, 100 mm and 150 mm ...
Aram Lee   +4 more
doaj   +1 more source

Similarity analysis of the flow-induced noise of a benchmark submarine

open access: yesFrontiers in Physics, 2023
As one of the three major noise sources of submarines, flow-induced noise plays a key role for the stealth capability of submarines. Several research studies based on experiment or simulation have evaluated the sound radiation from the scale model ...
Yao Qu   +3 more
doaj   +1 more source

Mapping and Analyzing Stream Network Changes in Watonwan River Watershed, Minnesota, USA

open access: yesISPRS International Journal of Geo-Information, 2017
Much of the Watonwan River tributary system to the upper Mississippi River basin (UMR), and the fluvial systems to which it drains, are listed as impaired under the United States Environmental Protection Agency Clean Water Act303(d) and/or by the ...
Fei Yuan   +6 more
doaj   +1 more source

Space-Time Variation and Spatial Differentiation of COVID-19 Confirmed Cases in Hubei Province Based on Extended GWR

open access: yesISPRS International Journal of Geo-Information, 2020
Clarifying the regional transmission mechanism of COVID-19 has practical significance for effective protection. Taking 103 county-level regions of Hubei Province as an example, and taking the fastest-spreading stage of COVID-19, which lasted from 29 ...
Yanwen Liu, Zongyi He, Xia Zhou
doaj   +1 more source

Construction of a 3D equivalent rock random fracture network model and its application in the Lianghekou Hydropower Station

open access: yes工程科学学报, 2022
The existence of fractures has a considerable influence on the mechanical properties of hydropower high and steep rocky slopes. The method to construct an equivalent rock mass calculation model that reflects the distribution characteristics of three ...
Na WU   +3 more
doaj   +1 more source

Energy multi-scale method to analyze the scale effect of soil particles

open access: yesFrontiers in Materials, 2023
As a common geological material, soil is a key aspect of construction engineering. Soil has typical multi-scale characteristics, but current multi-scale methods analyze these characteristics only in regard to geometric space.
Jian Chen   +4 more
doaj   +1 more source

The process of metal and alloy micro-milling: an analytical review

open access: yesТехнічна інженерія, 2023
The demand for miniature, high-precision products is growing rapidly in many industries, which is driving the need for efficient manufacturing technologies. Micromilling is the most universal process for micromachining of metals and alloys.
O.O. , N.O.
doaj   +1 more source

How Does Scale Effect Influence Spring Vegetation Phenology Estimated from Satellite-Derived Vegetation Indexes?

open access: yesRemote Sensing, 2019
As an important land-surface parameter, vegetation phenology has been estimated from observations by various satellite-borne sensors with substantially different spatial resolutions, ranging from tens of meters to several kilometers. The inconsistency of
Licong Liu   +5 more
doaj   +1 more source

A Novel Approach for Identifying Urban Built-Up Area Boundaries Using High-Resolution Remote-Sensing Data Based on the Scale Effect

open access: yesISPRS International Journal of Geo-Information, 2018
Identifying urban built-up area boundaries is critical to urban data statistics, size measurement, and spatial control. However, previous methods of extracting urban built-up area boundaries based on low-resolution remote-sensing data are frequently ...
Yi Zhou   +3 more
doaj   +1 more source

Scale Effect in Direct Shear Tests on Recycled Concrete Aggregate

open access: yesStudia Geotechnica et Mechanica, 2015
The depletion of natural resources is forcing researchers to explore the possibilities of new aggregates, such as recycled concrete aggregate (RCA). In this article, the mechanical properties and the influence of the size of the direct shear box on the ...
Soból Emil   +2 more
doaj   +1 more source

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