Results 41 to 50 of about 905,932 (309)

Drug‐Free Thrombolysis Mediated by Physically Activated Micro/Nanoparticles

open access: yesAdvanced Functional Materials, EarlyView.
Overview of particle‐mediated thrombolytic effects (thermal, mechanical, and chemical) and their activating physical stimuli (light, ultrasound, and magnetic field) in drug‐free thrombolysis. ABSTRACT Thrombus‐associated disorders rank among the world's leading causes of death, with ischemic heart disease and stroke as the main contributors.
Pierre Sarfati   +2 more
wiley   +1 more source

An experimental investigation into the borehole drilling and strata characteristics.

open access: yesPLoS ONE, 2021
Measurement while drilling is an important part of the intelligent development of coal mines. The main purpose of this paper is to comprehensively analyze the response characteristics of borehole drilling parameters and find a better method to predict ...
Cancan Liu   +5 more
doaj   +1 more source

Experimental investigation and statistical analysis of operational parameters on temperature rise in rock drilling

open access: yesInternational Journal of Heat and Technology, 2018
Received: 5 April 2018 Accepted: 29 November 2018 Heat generated during rock drilling, due to friction at the bit-rock interface. Due to which temperature increases, which can influence the thermal stress and subsequent rock failure.
V. Shankar, B. M. Kunar, C. Murthy
semanticscholar   +1 more source

Oxygen and ROS Delivery for Infected Wound Healing and Future Prospects

open access: yesAdvanced Healthcare Materials, EarlyView.
Bacterial infection is a major driver of delayed wound healing and postsurgical readmissions; with rising antibiotic resistance, solid peroxide–releasing biomaterials offer sustained delivery of ROS/O2 for antimicrobial control and microenvironmental modulation.
Ayden Watt   +7 more
wiley   +1 more source

Estimating rock properties using sound signal dominant frequencies during diamond core drilling operations

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2019
In many engineering applications such as mining, geotechnical and petroleum industries, drilling operation is widely used. The drilling operation produces sound by-product, which could be helpful for preliminary estimation of the rock properties ...
Ch.Vijaya Kumar   +3 more
doaj   +1 more source

Theoretical and Experimental Study of the Effects of Impact Drilling Parameters on the Properties of Surrounding Rock Damage

open access: yesShock and Vibration, 2020
Using a self-designed hydraulic impact drilling test-bed and rock core drill, six groups of cylindrical granite specimens (93 mm dia. × 200 mm) containing central axial holes formed either by impact or nonimpact drilling methods were tested in uniaxial ...
Zhi Liu   +4 more
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Simulation and experimental research on drilling and rock breaking mechanisms of anchor drill rigs with analysis of drilling feedback signals

open access: yesScientific Reports
In order to alleviate the problem of tense mining succession in coal mines, this study starts from the perspective of rapid roadway excavation roadway support efficiency, and researches on the mechanism of anchored drilling drilling for drilling and rock
Xiao-He Wang, Zhi-Qiang Zhao, Wu Jing
doaj   +1 more source

Testing method of rock structural plane using digital drilling

open access: yesJournal of Rock Mechanics and Geotechnical Engineering
The rock mass consists of rock blocks and structural planes, which can reduce its integrity and strength. Therefore, accurately obtaining the characteristics of the rock mass structural plane is a prerequisite for evaluating stability and designing ...
Qi Wang   +6 more
doaj   +1 more source

A Piezoelectric-Driven Rock-Drilling Device for Extraterrestrial Subsurface Exploration

open access: yesShock and Vibration, 2018
The rocks on extraterrestrial objects contain plenty of original geological and biological information. Drilling and sampling are an essential task in lunar exploration or future explorations of other planets like mars. Due to the limitation of payloads,
He Li   +5 more
semanticscholar   +1 more source

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