Results 41 to 50 of about 371,626 (309)

Quantitative characterization of damage characteristics of coal using evaluation parameters considering the spatial structural characteristics of fractures

Scientific Reports
Stable underground tunnels and gas drainage boreholes are important guarantees for safe and efficient coal mining. The stability of these structures is closely related to the mechanical properties of coal and rock damage.
Jin Yan, Xiaoming Ni, Erlei Su, Ruize Niu   +3 more
doaj   +1 more source

Experimental Study on the Damage of Artificial Fracture Permeability in Coal during the Flow Back of Guar-Based Fracturing Fluid

Geofluids, 2020
After the completion of fracturing operation in coalbed methane (CBM), the fracturing fluid needs to flow back to the ground in time to reduce the damage to the coal reservoir.
Shenggui Liu, Jinkuang Huang, Songlei Tang, Shixiong Shi, Xuan Wu, Xin Liu   +5 more
doaj   +1 more source

The Effect of Dynamic Fracture Strain on the Structural Response of Ships in Collisions

Journal of Marine Science and Engineering, 2022
As ship collisions and grounding accidents lead to human injury and damage to the environment and property, more accurate predictions of structural damage to ships under impact loads are needed.
Sang Jin Kim, Jung Min Sohn
doaj   +1 more source

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

Molecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson, Lyanne Delgado‐Coka, Natalia Marchenko, Luisa F. Escobar‐Hoyos, Kenneth R. Shroyer, Alisa Yurovsky, Trey Ideker, Gábor Balázsi, Thomas MacCarthy, Scott Powers   +9 more
wiley   +1 more source

Traumatic Microhemorrhages Are Not Synonymous With Axonal Injury

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Diffuse axonal injury (DAI) is caused by acceleration‐deceleration forces during trauma that shear white matter tracts. Susceptibility‐weighted MRI (SWI) identifies microbleeds that are considered the radiologic hallmark of DAI and are used in clinical prognostication.
Karinn Sytsma, Rhonda Mittenzwei, Heather Maioli, Amanda Kirkland, C. Dirk Keene, Ramon Diaz‐Arrastia, Christine Mac Donald, Chiara Maffei, Brian L. Edlow, Amber L. Nolan   +9 more
wiley   +1 more source

A Systematic Review and Meta‐Analysis of the Recurrence of Autoimmune Encephalitis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Autoimmune encephalitis (AE) is a disease with a potential for recurrence, and patients receive immunotherapy to prevent it. However, there is no consensus on the duration of immunotherapy. This study aimed to determine the recurrence rate and identify the risk factors for AE to provide guidance on the duration of immunotherapy ...
Shangkai Bai, Sen Zhang, Haipei Zhang, Yating Zhang, Junhong Guo, Xiaoyan Yang   +5 more
wiley   +1 more source

Role of Prednisone and 25‐Hydroxyvitamin D on Bone Mineral Density and Osteoporosis in Systemic Lupus Erythematosus

Arthritis Care &Research, EarlyView.
Objective We evaluated the role of 25‐hydroxyvitamin D (25[OH]D), prednisone, and other risk factors for bone mineral density (BMD) loss and osteoporosis in systemic lupus erythematosus (SLE). Methods We calculated the association between 25(OH)D levels and other potential risk factors and BMD measures (spine T scores) and osteoporosis (defined as a T ...
Nima Madanchi, Andrea Fava, Daniel W. Goldman, Laurence S. Magder, Michelle Petri   +4 more
wiley   +1 more source

Stress distribution characteristics and crack propagation law of fractured hard rock influenced by opening degree

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Prefabricated fracture dip angles and openings are important factors affecting the damage pattern and breakage mechanism of fractured rock. In order to investigate the fracture mechanism of fractured hard rock under the interaction of different fracture ...
Baoxin Jia, Fengpu Liu
doaj   +1 more source

Experimental study on fatigue damage evolution mechanism of hard layered sandstone under cyclic loading

Yantu gongcheng xuebao
The deformation and cracking of tunnel basement surrounding rock under the disturbance of train dynamic load contain complex mechanical damage problems.
SONG Zhanping1 , CHENG Yun 1, 2, 3, YANG Tengtian 4, YANG Pengtao 5, PAN Hongwei 5
doaj   +1 more source

Experimental study of fracture dynamic evolution process of grouted specimen under uniaxial compression based on CT scanning

Rock and Soil Mechanics, 2022
To study the fracture dynamic evolution process of grouted specimens under loading conditions, the graded gravel grouted specimen was periodically scanned during the uniaxial compression damage process using a CT scanning system.
ZHU Chang-xing , SUN Jia-xin, WANG Yan-wei   +2 more
doaj   +1 more source