Results 21 to 30 of about 919,764 (280)

Anti-wear (AW) and extreme-pressure (EP) behavior of jojoba oil dispersed with green additive CaCO3 nanoparticles

open access: yesJournal of Engineering and Applied Science, 2023
Lubricating approaches involving nanoparticles have a significant role in reducing friction and wear. Reducing friction is crucial for preserving energy, minimizing emissions, and protecting the environment.
Trishul Kulkarni   +4 more
doaj   +1 more source

PREDICTION OF UNCONFINED COMPRESSIVE STRENGTH OF ROCKS BY POINT LOAD STRENGTH INDEX [PDF]

open access: yesJournal of Al-Azhar University Engineering Sector, 2019
The point load testing is widely used to determine rock strength indeces in geotechnicalpractices as a result to simplicity. The present study presents correlation equations betweenthe unconfined compressive strength (qu) and point load strength index Is(50) adopted fordifferent types of rocks.
Mohamed mohamed   +2 more
openaire   +1 more source

Electricity load profile classification using Fuzzy C-Means method [PDF]

open access: yes, 2008
This paper presents the Fuzzy C-Means (FCM) clustering method. The FCM technique assigns a degree of membership for each data set to several clusters, thus offering the opportunity to deal with load profiles that could belong to more than one group at ...
Bradley, D.   +3 more
core   +3 more sources

Fuzzy Load-Shedding Strategy Considering Photovoltaic Output Fluctuation Characteristics and Static Voltage Stability

open access: yesEnergies, 2018
Based on the equilibrium point equations of a classic three-node system integrated with a large-scale photovoltaic cell (PV) power plant, the impact of PV output fluctuation on the saddle-node bifurcation (SNB) was derived and analyzed. When PV runs in a
Sheng Li, Zhinong Wei, Yanan Ma
doaj   +1 more source

Fill the void: improved scheduling for optical switching [PDF]

open access: yes, 2015
With ever-increasing demand for bandwidth, optical packet/burst switching is proposed to utilize more of the available capacity of optical networks in the future.
Bruneel, Herwig   +2 more
core   +1 more source

A new index combining weak layer and slab properties for snow instability prediction [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2015
Snow slope stability evaluation requires considering weak layer as well as slab properties – and in particular their interaction. We developed a stability index from snow micro-penetrometer (SMP) measurements and compared it to 129 concurrent point ...
J. Schweizer, B. Reuter
doaj   +1 more source

Correlation study some dynamic properties with density, point load Index and Uniaxial compressive strength of some units of Mukdadya (lowerBakhtiari) Formation

open access: yesTikrit Journal of Pure Science, 2023
Geotechnical study conducted upon 10 rock samples have been taken from outcroup of Mukdadiya Formation (Lower Bakhtiari) which are located in Kirkuk anticline.
Burkan S. Othman, Dahir K. ALI
doaj   +1 more source

Rock material particle size and its correlation with the point load test index

open access: yesMinerva, 2022
Abstract: This work proposes the methodology to obtain a correlation between the particle size of the rock material and the point load test index (Is 50), in order to characterize the materials, present in mining projects in terms of resistance. For a correct development of mining activities, both open pit (quarries) and underground (mines), it is ...
Patricio Feijoo   +3 more
openaire   +1 more source

Load and resistance factors for prestressed concrete girder bridges

open access: yesBudownictwo i Architektura, 2020
There has been a considerable progress in the reliability-based code development procedures. The load and resistance factors in the AASHTO bridge design code were determined using the statistical parameters from the 1970's  and early 1980’s.
Andrzej S. Nowak, Olga Iatsko
doaj   +1 more source

Distributed Generation as Voltage Support for Single Wire Earth Return Systems [PDF]

open access: yes, 2004
Key issues for distributed generation (DG) inclusion in a distribution system include operation, control, protection, harmonics, and transients. This paper analyzes two of the main issues: operation and control for DG installation.
Kashem, Mohammad, Ledwich, Gerard
core   +2 more sources

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