Results 71 to 80 of about 33,281 (308)

Effect of confining pressure on fracture characteristics and mineralogical behavior of tight sandstone specimens after hydraulic fracturing

open access: yesDeep Underground Science and Engineering, EarlyView.
Hydraulic fracturing in tight sandstone and fracture propagation characteristics using backscattered electron‐scanning electron microscope (BSE‐SEM) images. Abstract This study focuses on hydraulic fracturing experiments conducted under triaxial conditions on tight sandstone specimens from Shivpuri district, Madhya Pradesh, India.
Pankaj Rawat, Narendra Kumar Samadhiya
wiley   +1 more source

Changes in Neurology Referrals Before and After the Earthquake: A Retrospective Review

open access: yesRomanian Journal of Physical Therapy
Introduction: Earthquakes can disrupt access to healthcare and alter health-seeking behavior, potentially altering the profile of neurology outpatient referrals.
Tugba CALISIR, Taskin DUMAN
doaj   +1 more source

Penyesuaian Dusun Jangka Panjang Ditinjau Dari Resiliensi Komunitas Pasca Gempa [PDF]

open access: yes, 2011
Disasters always occur without can be predicted precisely. The need to use community\u27s strengths are very important component in new disaster-risk reduction effort.
Novianty, A. (Anita)
core   +1 more source

Optimization of cut‐hole layout under high in situ stress based on numerical simulation and field tests

open access: yesDeep Underground Science and Engineering, EarlyView.
This study investigates the blast‐induced rock damage patterns under different cut‐hole layouts and ground stress conditions through numerical simulations and field tests. The findings in this study provide valuable insights for similar underground engineering applications.
Junjie Zhao   +5 more
wiley   +1 more source

Novel Grounded Capacitor All-Pass and Notch Filters Using Current Conveyors and Differential Amplifier

open access: yesActive and Passive Electronic Components, 2003
Three circuits each realizing second-order all-pass/notch filter transfer functions are reported. All circuits use grounded capacitors and are suitable for IC implementation.
R. Saraswat, K. Pal, S. Rana
doaj   +1 more source

Impact of New Madrid Seismic Zone Earthquakes on the Central USA, Vol. 1 and 2 [PDF]

open access: yes, 2009
The information presented in this report has been developed to support the Catastrophic Earthquake Planning Scenario workshops held by the Federal Emergency Management Agency.
Cleveland, Lisa J.   +3 more
core  

Temperature‐dependent shear behavior and constitutive model of the rock–concrete interface

open access: yesDeep Underground Science and Engineering, EarlyView.
Shear tests were conducted to investigate the temperature‐dependent shear behavior of the rock–concrete interface, highlighting the interaction between the surrounding rock and the lining during tunnel fires. Under experimental conditions, concrete exhibited greater temperature sensitivity than rock, with the shear fracture surface transitioning from ...
Hongbin Chen   +6 more
wiley   +1 more source

FROM POST-EARTHQUAKE WASTE TO RESOURCE. [PDF]

open access: yes, 2016
[EN] The international debate on the environmental crisis, known since the 70's, pushes to review priorities in light of today's time to safeguard the future. In this regard, the problem of waste disposal takes on a great importance, especially from the construction sector. At the same time, it is necessary to revamp the Italian architectural heritage.
openaire   +2 more sources

Shear behavior of bolt–grout interfaces under constant normal stiffness: Influence of grout strength and thickness

open access: yesDeep Underground Science and Engineering, EarlyView.
The effects of grout strength and thickness on the shear behavior of bolt–grout interfaces (BGI) under constant normal stiffness conditions are investigated. Shear strength, failure modes, and acoustic emission characteristics are examined. The findings reveal that grout strength exerts a significantly greater influence on BGI shear strength and ...
Sunhao Zhang   +5 more
wiley   +1 more source

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