Results 11 to 20 of about 919,764 (280)

Determination of the Uniaxial Compressive Strength of Rocks from the Strength Index

open access: yesGeoScience Engineering, 2022
The uniaxial compressive strength (UCS) is classified as one of the basic mechanical properties of rocks, which is widely used in mining and construction practice.
Jindřich ŠANCER   +2 more
doaj   +1 more source

Distribution characteristics of the point load strength index of irregular ore rock samples in deep mines

open access: yes工程科学学报, 2023
The frequent occurrence of core disking in boreholes under high in-situ stress in deep rock engineering leads to the difficulty in intact core sampling on sites.
Di-yuan LI   +4 more
doaj   +1 more source

Correlation Study Between Point Load Test And Uniaxial Compressive Strength and Tensile Strength of Some Sedimentary Rocks In Mosul City [PDF]

open access: yesEngineering and Technology Journal, 2012
The point load test is used as a quick and inexpensive means of obtaining rock strength indexes when logging core samples in either a field or laboratory setting.
Thamer M. Nuri   +2 more
doaj   +1 more source

Determining the strength index of coal from the Brod - Gneotino deposit, Bitola [PDF]

open access: yesMining and Metallurgy Engineering Bor, 2018
The Point Load Test (PLT) was performed in the geomechanical laboratory of the MMI Bor, in order to determine the strength index of coal samples from the Brod - Gneotino, Bitola, Republic of Macedonia. On the basis of the obtained results, it is possible
Tašić Dušan   +2 more
doaj   +1 more source

Non-Linear Instability of Pin-Ended Functionally Graded Material Arches Under Locally Distributed Radial Loads

open access: yesFrontiers in Materials, 2022
The arch is a common structural form in bridge engineering; its collapse is often caused by instability. In this article, in-plane nonlinear instability of pin-ended functionally graded material (FGM) arches with two cross-sectional types under local ...
Jinman Zhou   +5 more
doaj   +1 more source

Research on the Conversion Relationship between Dynamic Point Load Strength and Dynamic Compressive Strength Based on Energy System

open access: yesShock and Vibration, 2022
Point load test is a simple and fast method to obtain the compressive strength of rock. According to the maximum load at failure and the distance between two cone ends, the compressive strength of specimens can be calculated by the empirical formula ...
Ming Zhou   +4 more
doaj   +1 more source

Analysis of failure behaviour of the anisotropic rocks in the point load index test

open access: yesIOP Conference Series: Earth and Environmental Science, 2021
Abstract The strength and deformational behaviour of rocks under loading conditions are important in underground excavations, mining and every civil engineering constructions as it determines the stability of such structures. This study aims to augment the existing know-how on such behaviour through analysis of point load tests conducted
D Acharya   +3 more
openaire   +1 more source

Association between one-hour post-load plasma glucose levels and vascular stiffness in essential hypertension [PDF]

open access: yes, 2012
Objectives: Pulse wave velocity (PWV) is a surrogate end-point for cardiovascular morbidity and mortality. A plasma glucose value $155 mg/dl for the 1-hour post-load plasma glucose during an oral glucose tolerance test (OGTT) is able to identify ...
Arturi, F   +8 more
core   +2 more sources

Reliability and evaluation of point load index values obtained from different testing devices [PDF]

open access: yesJournal of the Southern African Institute of Mining and Metallurgy, 2020
In some rock mass classification methods, the point load index (PLI) value is used as a parameter in the determination of the class of rock mass. The PLI value may be used as a design parameter such as uniaxial compressive strength (UCS) and tensile strength (TS), owing to its being simpler, faster, and cheaper and easier to prepare than the specimens ...
Altindag, R., Akbay, D.
openaire   +6 more sources

Do frailty and comorbidity indices improve risk prediction of 28-day ED reattendance? Reanalysis of an ED discharge nomogram for older people [PDF]

open access: yes, 2018
Background: In older people, quantification of risk of reattendance after emergency department (ED) discharge is important to provide adequate post ED discharge care in the community to appropriately targeted patients at risk. Methods: We reanalysed data
A Elixhauser   +15 more
core   +2 more sources

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