Results 121 to 130 of about 1,700,794 (328)
Adaptation of a modern medium helicopter (Sikorsky S-76) to higher harmonic control [PDF]
, 1985 Sikorsky Aircraft has performed analytical studies, design analyses, and risk reduction tests have been performed for Higher Harmonic Control (HHC) on the S-76. The S-76 is an 8 to 10,000 lb helicopter which cruises at 145 kts.
Davis, M. W. +2 more
core +1 more source
Deep Underground Science and Engineering, EarlyView.This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang +5 more
wiley +1 more source
The Real Time Display Builder (RTDB) [PDF]
The Real Time Display Builder (RTDB) is a prototype interactive graphics tool that builds logic-driven displays. These displays reflect current system status, implement fault detection algorithms in real time, and incorporate the operational knowledge of
Bailey, Samuel A., Jr. +1 more
core +1 more source
Deep Underground Science and Engineering, EarlyView.An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang +5 more
wiley +1 more source
Local development and technological innovation in Algeria: experiences and perspectives [PDF]
The starting point of the present paper is the idea that to define a regional development policy which should effectively respond to the new challenges of the future, in particular to the globalisation of the economy and the acceleration of technological
Immacolata Caruso
core
The potential significance of micro hydro systems [PDF]
, 2006 Thus we see that for Bangladesh, SHP plants have a lot to offer by way of low-cost energy, irrigation and flood control. Additionally, these resources will be provided with no environmental costs incurred.
Joseph, Priyanka
core +1 more source
Surface hydration‐induced damage in tight oil‐bearing sandy conglomerate reservoirs
Deep Underground Science and Engineering, EarlyView.A series of techniques such as X‐ray diffraction, scanning electron microscopy, energy‐dispersive spectroscopy, conductivity tests, and infrared thermal imaging were used. The key findings are the identification of a two‐stage surface hydration process and the elucidation of the effects of various minerals and elements on the hydration process ...
Anbang Zhao +5 more
wiley +1 more source
The impact of forced closure on proppant distribution of hydraulic fracturing in shale formations
Deep Underground Science and Engineering, EarlyView.Research findings demonstrate that implementing forced closure within shale formations can remarkably mitigate proppant settlement, concurrently increasing the effective propped surface area from 29.74% to 38.68%. Abstract Forced closure is widely used in conventional oil and gas reservoirs to promote uniform proppant placement.
Tongxuan Gu +3 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu +4 more
wiley +1 more source
EnergiesSimultaneous multiple-fracture treatments in horizontal wellbores have become an essential technology for the economic development of shale gas reservoirs. During hydraulic fracturing, fracture initiation and propagation always induce additional stresses
Enshun Ping +6 more
doaj +1 more source