Results 121 to 130 of about 19,525 (203)

Uncorrected refractive errors for distance among the residents in 'homes for the aged' in South India–The Hyderabad Ocular Morbidity in Elderly Study (HOMES) [PDF]

open access: hybrid, 2020
Srinivas Marmamula   +8 more
openalex   +1 more source

Rapid estimation of concentration of aromatic classes in middistillate fuels by high-performance liquid chromatography [PDF]

open access: yes
An high performance liquid chromatography (HPLC) method to estimate four aromatic classes in middistillate fuels is presented. Average refractive indices are used in a correlation to obtain the concentrations of each of the aromatic classes from HPLC ...
Otterson, D. A., Seng, G. T.
core   +1 more source

Vision and Reading Difficulties Part 2: Optometric correlates of reading difficulties [PDF]

open access: yes, 2009
In this second article of the series on vision and reading difficulties, the optometric factors (for example refractive error and orthoptic function) that may be associated with reading problems are discussed in detail.
Allen, Peter M   +2 more
core  

Uncorrected Refractive Error and Distance Visual Acuity in Children Aged 6 to 14 Years. [PDF]

open access: yesOptom Vis Sci, 2021
Kleinstein RN   +8 more
europepmc   +1 more source

Visual acuity standards for driving [PDF]

open access: yes, 2015
This paper reviews the current visual acuity standards for UK drivers. These standards have changed in recent years such that car drivers (Group 1) now have two standards to meet: reading a number plate at 20m, and achieving an acuity of 6/12.
Latham, Keziah, Rae, Sheila M.
core  

Demonstration of analyzers for multimode photonic time-bin qubits

open access: yes, 2018
We demonstrate two approaches for unbalanced interferometers as time-bin qubit analyzers for quantum communication, robust against mode distortions and polarization effects as expected from free-space quantum communication systems including wavefront ...
Agne, Sascha   +5 more
core   +1 more source

The Ophthalmology Management Of Primary School Children Among Chinese Ethnic Group In Penang, Malaysia [PDF]

open access: yes, 2011
Selama ini, kesilapan pembiasan mata ialah satu isu sosial di semua negara terutama dalam masyarakat Cina.
Chuan, Chin Liang
core   +1 more source

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