Results 31 to 40 of about 2,847,969 (279)

Equivalent Permeability Distribution for Fractured Porous Rocks: The Influence of Fracture Network Properties

open access: yesGeofluids, 2020
Equivalent fracture models are widely used for simulations of groundwater exploitation, geothermal reservoir production, and solute transport in groundwater systems. Equivalent permeability has a great impact on such processes.
Tao Chen
doaj   +1 more source

A novel knowledge-based prediction model for estimating an initial equivalent uniform dose in semi-auto-planning for cervical cancer

open access: yesRadiation Oncology, 2022
Background We developed a novel concept, equivalent uniform length (EUL), to describe the relationship between the generalized equivalent uniform dose (EUD) and the geometric anatomy around a tumor target.
Cheng Tao   +5 more
doaj   +1 more source

Twisted Reed-Solomon Codes [PDF]

open access: yes, 2017
We present a new general construction of MDS codes over a finite field $\mathbb{F}_q$. We describe two explicit subclasses which contain new MDS codes of length at least $q/2$ for all values of $q \ge 11$. Moreover, we show that most of the new codes are
Beelen, Peter   +2 more
core   +2 more sources

Dividing the Force Concept Inventory into two equivalent half-length tests

open access: yesPhysical Review Special Topics. Physics Education Research, 2015
The Force Concept Inventory (FCI) is a 30-question multiple-choice assessment that has been a building block for much of the physics education research done today.
Jing Han   +7 more
doaj   +1 more source

Prediction of spherical equivalent refraction and axial length in children based on machine learning

open access: yesIndian Journal of Ophthalmology, 2023
Purpose: Recently, the proportion of patients with high myopia has shown a continuous growing trend, more toward the younger age groups. This study aimed to predict the changes in spherical equivalent refraction (SER) and axial length (AL) in children ...
Shaojun Zhu   +7 more
doaj   +1 more source

Mass spectra of methyl-branched hydrocarbons from eggs of the tobacco hornworm

open access: yesJournal of Lipid Research, 1972
Hydrocarbons from three homologous series of branched alkanes from the eggs of the tobacco hornworm, Manduca sexta (L.), were identified by mass spectrometry.
Dennis R. Nelson   +2 more
doaj   +1 more source

Simulation of Optical Fiber Amplifier Gain Using Equivalent Short Fibers

open access: yes, 2019
Electromagnetic wave propagation in optical fiber amplifiers obeys Maxwell equations. Using coupled mode theory, the full Maxwell system within an optical fiber amplifier is reduced to a simpler model.
Drake, Dow   +3 more
core   +1 more source

Correlating and predicting the air infiltration through the cracks of suspended timber floors [PDF]

open access: yes, 2001
This paper shows that the visible gap length may be used as a physical parameter when correlating pressure difference to volume flow rate (or air velocity) through the cracks between floorboards and can be termed the Equivalent Crack Length.
Lai, E, McGrath, PT
core   +1 more source

Association between refractive errors and ocular biometry in Iranian adults

open access: yesJournal of Ophthalmic & Vision Research, 2015
Purpose: To investigate the association between ocular biometrics such as axial length (AL), anterior chamber depth (ACD), lens thickness (LT), vitreous chamber depth (VCD) and corneal power (CP) with different refractive errors.
Hassan Hashemi   +7 more
doaj   +1 more source

“Assessment of Coastal Vulnerability Index on potential agricultural land - CVI, Banyuwangi Regency” [PDF]

open access: yesE3S Web of Conferences, 2020
Indonesia is an archipelago country that has the longest coastline after Canada (UNCLOS). Banyuwangi District is a coastal area in Northern Java, which has a very dynamic development because of its location of the capital city that located along the ...
Romadhona Sukron   +3 more
doaj   +1 more source

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