A simple inspection technique of visual defects of polymer polarizer

Many of currently manufactured components intended for automotive, must not only meet the requirements on functionality, but also considerable demands on the visual appearance. Parts are subjected to thorough inspection and suppliers are forced to deal with causes of a very slight visual defects. When examining the defects, it is necessary to use a whole range of advanced analytical methods and procedures previously used only for identification of the physical and chemical properties and structure of the material. This paper deals with several examples which have been solved. It focuses especially on the use of demanding metallographic sample preparation from components with surface defects, examining the defects on the cross-section using mainly microscopic techniques and determining the causes of their generation. These results then serve as a basis for modification of the technology and thus they are the tool for significant reduction of amount of NOK parts.

Download Full-text

Functional and Organic Visual Defects: The Differentiation in Schoolchildren

Proceedings of the Royal Society of Medicine ◽

10.1177/003591577106400612 ◽

1971 ◽

Vol 64 (6) ◽

pp. 619-621 ◽

Cited By ~ 2

Author(s):

Brian Harcourt

Keyword(s):

Visual Defects

Download Full-text

The Psychologist-Educator Views the Relationship of Vision to Reading and Related Learning Disabilities

Journal of Learning Disabilities ◽

10.1177/002221948101401003 ◽

1981 ◽

Vol 14 (10) ◽

pp. 565-567 ◽

Cited By ~ 2

Author(s):

Jules C. Abrams

Keyword(s):

Learning Disabilities ◽

Visual Field ◽

Visual Perception ◽

Learning Disability ◽

Visual Defects ◽

Considerable Controversy ◽

Visual Problems ◽

Relationship Of ◽

The Relationship

The role of visual problems in learning disability has been a source of considerable controversy for many years. One major issue in the continuing argument is the frequent confusion of labels and concepts in the visual field. It is important to view vision as a psychophysiologic mechanism and to differentiate it from a mechanistic orientation emphasizing the eyes. Most visual problems related to learning disability represent a breakdown in the ability of the eyes to function in an harmonious fashion, that is, some interference in binocular function. While visual defects should not be confused with defects in visual perception, the identification and treatment of visual problems is an important element in the diagnosis and remediation of learning disabilities.

Download Full-text

VISUAL DEFECTS IN PRISONERS-OF-WAR FROM THE FAR EAST

The Lancet ◽

10.1016/s0140-6736(46)90727-1 ◽

1946 ◽

Vol 248 (6414) ◽

pp. 149-153 ◽

Cited By ~ 16

Author(s):

H.E. Hobbs ◽

F.A. Forbes

Keyword(s):

Far East ◽

Prisoners Of War ◽

The Far East ◽

Visual Defects

Download Full-text

Courtship and Visual Defects of cacophony Mutants Reveal Functional Complexity of a Calcium-Channel α1 Subunit in Drosophila

Genetics ◽

10.1093/genetics/149.3.1407 ◽

1998 ◽

Vol 149 (3) ◽

pp. 1407-1426 ◽

Cited By ~ 4

Author(s):

Lee A Smith ◽

Alexandre A Peixoto ◽

Elena M Kramer ◽

Adriana Villella ◽

Jeffrey C Hall

Keyword(s):

Alternative Splicing ◽

Calcium Channels ◽

Calcium Channel ◽

Stop Codon ◽

Biological Functions ◽

Visual Defects ◽

Transcript Diversity ◽

Functional Complexity ◽

Α1 Subunit ◽

Subtle Abnormality

Abstract We show by molecular analysis of behavioral and physiological mutants that the Drosophila Dmca1A calcium-channel α1 subunit is encoded by the cacophony (cac) gene and that nightblind-A and lethal(1)L13 mutations are allelic to cac with respect to an expanded array of behavioral and physiological phenotypes associated with this gene. The cacS mutant, which exhibits defects in the patterning of courtship lovesong and a newly revealed but subtle abnormality in visual physiology, is mutated such that a highly conserved phenylalanine (in one of the quasi-homologous intrapolypeptide regions called IIIS6) is replaced by isoleucine. The cacH18 mutant exhibits defects in visual physiology (including complete unresponsiveness to light in certain genetic combinations) and visually mediated behaviors; this mutant (originally nbAH18) has a stop codon in an alternative exon (within the cac ORF), which is differentially expressed in the eye. Analysis ofthe various courtship and visual phenotypes associated with this array ofcac mutants demonstrates that Dmca1A calcium channels mediate multiple, separable biological functions; these correlate in part with transcript diversity generated via alternative splicing.

Download Full-text