Results 61 to 70 of about 165,045 (285)

Pore structure and fractal analysis of coal subjected to multiple treatments based on nuclear magnetic resonance

open access: yesEnergy Science & Engineering, 2022
Microwave heating (MW) and freeze fracturing (FF) have been widely used for enhancing the permeability of coal reservoirs. In this paper, the effects of combined MW–FF treatments on coals are experimentally investigated through nuclear magnetic resonance.
Zairong Yang   +3 more
doaj   +1 more source

Financial Distress and Its Determinants in Rheumatoid Arthritis

open access: yesArthritis Care &Research, EarlyView.
Objective To quantify the degree of financial distress and identify its determinants in adults with rheumatoid arthritis (RA) given the frequent prolonged use of expensive disease‐modifying therapies. Methods We identified adults enrolled in the FORWARD databank with either RA or noninflammatory musculoskeletal disease (NIMSKD) completing the ...
Amber Brown Keebler   +5 more
wiley   +1 more source

Fracturing of topological Maxwell lattices

open access: yesNew Journal of Physics, 2018
We present fracturing analysis of topological Maxwell lattices when they are stretched by applied stress. Maxwell lattices are mechanical structures containing equal numbers of degrees of freedom and constraints in the bulk and are thus on the verge of ...
Leyou Zhang, Xiaoming Mao
doaj   +1 more source

The electrical signature of rock samples exposed to hydrostatic and triaxial pressures

open access: yesAnnals of Geophysics, 2001
The electrical signature of sedimentary (carbonate) and crystalline rock samples was studied in hydrostatic and triaxial pressure experiments up to 300 MPa.
G. Nover, H. Heikamp
doaj   +1 more source

Cadmium plated steel caps seal anodized aluminum fittings [PDF]

open access: yes, 1971
Cadmium prevents fracturing of hard anodic coating under torquing to system specification requirements, prevents galvanic coupling, and eliminates need for crush washers, which, though commonly used in industry, do not correct leakage problem experienced
Padden, J.
core   +1 more source

Roughness of fracture surfaces [PDF]

open access: yes, 2000
We study the fracture surface of three dimensional samples through a model for quasi-static fractures known as Born Model. We find for the roughness exponent a value of 0.5 expected for ``small length scales'' in microfracturing experiments.
A Parisi   +11 more
core   +3 more sources

Testing a Personalized Approach to Chronic Low Back Pain: A Randomized Controlled Trial in Older Veterans

open access: yesArthritis Care &Research, EarlyView.
Objective We aimed to test the efficacy of personalized treatment of older veterans with chronic low back pain (CLBP) delivered by Aging Back Clinics (ABCs) as compared with usual care (UC). Methods Two hundred ninety‐nine veterans aged 65 to 89 with CLBP from three Veterans Affairs (VA) medical centers underwent baseline testing, randomization to ABC ...
Debra K. Weiner   +9 more
wiley   +1 more source

Overcoming challenges in the classification of deep geothermal potential [PDF]

open access: yes, 2015
The geothermal community lacks a universal definition of deep geothermal systems. A minimum depth of 400 m is often assumed, with a further sub-classification into middle-deep geothermal systems for reservoirs found between 400 and 1000 m.
Breede, K.   +2 more
core   +1 more source

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

open access: yesArthritis 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   +4 more
wiley   +1 more source

Independent Expert Scientific Panel – Report on Unconventional Oil and Gas [PDF]

open access: yes, 2014
No abstract ...
Curran, J.   +8 more
core   +1 more source

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