Results 51 to 60 of about 34,934 (272)
Persepsi usahawan industri kecil bumiputera terhadap aspek perlaksaan strategi pemasaran : satu tinjauan di Parit Raja, Batu Pahat, Johor [PDF]
, 2001 Strategi pemasaran memainkan peranan penting untuk menentukan kejayaan atau kegagaian sesebuah pemiagaan. Lantaran itu, kajian ini bertujuan untuk mengena!
Mohamood, Maziharita
core
Deep Underground Science and Engineering, EarlyView.A scientometric analysis of 2449 journal articles and a comprehensive review of 336 papers were conducted, discussing and identifying challenges and research gaps in rockburst prediction and prevention and proposing an ontology‐based framework for better decision‐making in underground excavations. Abstract With underground engineering projects becoming
Hongchuan Yan +6 more
wiley +1 more source
Effect of Spalling Shape on Meshing Stiffness and Dynamics Characteristic of Gear
Jixie chuandong, 2020 The traditional research on spalling gear failure mainly focuses on the change of gear stiffness under different spalling depth and width，it has great limitations. Aiming at this problem，the influence of spalling shape and the spalling shape distribution
Tu Xuxin, Jian Xiaochun, Wu Shengli
doaj
A Theoretical Model with the Effect of Cracks in the Local Spalling of Full Ceramic Ball Bearings
Applied Sciences, 2019 For full ceramic ball bearings, cracks occur frequently in the spalling on the rings, which leads to impacts on the bearing dynamic characteristics. In this paper, the spalling is set on the outer ring, and the dynamic model considering the effect of ...
Huaitao Shi +4 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei +4 more
wiley +1 more source
Stability analysis and rib spalling prediction of coal wall in ultra-high mining working faces
河南理工大学学报. 自然科学版ObjectivesThe problem of coal wall rib spalling in ultra-high mining height working faces was addressed.MethodsThe mechanism of rib spalling was studied through theoretical analysis and field measurements.
REN Huaiwei +6 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.A novel shear‐lag model, validated by pull‐out tests, incorporates a constant bond stress stage to predict the complete load–displacement response of grouted rock bolts, providing a new tool for optimizing anchorage length and material toughness in deep underground engineering. Abstract The stability of rock masses in deep underground excavations, such
Wenhui Bian +6 more
wiley +1 more source
Applied Sciences, 2019 Due to the importance of concrete as a structural material and the pathologies that can be achieved by reinforced concrete structures when they are subjected to the action of fire both at the level of resistance and deformation, in this research we study
Rubén Serrano Somolinos +3 more
doaj +1 more source
Depth estimation of inner wall defects by means of infrared thermography [PDF]
, 2009 There two common methods dealing with interpreting data from infrared thermography: qualitatively and quantitatively. On a certain condition, the first method would be sufficient, but for an accurate interpretation, one should undergo the second one ...
Mohd. Mokji, Musa +1 more
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Seismic response of timber frames with cane and mortar walls [PDF]
, 2014 This paper describes an experimental study into the seismic behaviour of low-cost walls incorporating timber frames with composite cane and cement mortar panels.
Elghazouli, AY +3 more
core +1 more source