Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 32 for “"Eye lens"”.
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Molecular evolution of eye lens proteins: cryptic structures and functions
Contains fulltext : mmubn000001_073767174.pdf (Publisher’s version ) (Open Access)
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Characterization of Protein Interactions in Eye Lens Crystallin Proteins and Crystallization
The central theme of this research is to understand how protein interactions alter the state of aggregation and the characterization of these interactions through light scattering properties of dense suspensions. One context where protein interactions have an impact on the state of aggregation is …
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The soluble proteins of the bovine eye lens: studies on development and aging
Contains fulltext : mmubn000001_203442490.pdf (Publisher’s version ) (Open Access)
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Qki-Mediated Cholesterol Biosynthesis In Eye Lens and Myelin of The Central Nervous System
… While most tissues utilize both sources, eye lens and brain depend extensively on cholesterol biosynthesis due to the limited supply from circulation. Lens cell membrane consists of highest portion of cholesterol. Brain is the most cholesterol-rich organ, which accounts for 23% of total …
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Qki-Mediated Cholesterol Biosynthesis In Eye Lens and Myelin of The Central Nervous System
… While most tissues utilize both sources, eye lens and brain depend extensively on cholesterol biosynthesis due to the limited supply from circulation. Lens cell membrane consists of highest portion of cholesterol. Brain is the most cholesterol-rich organ, which accounts for 23% of total …
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Stability, unfolding, and aggregation of the gamma D and gamma S human eye lens crystallins
The transparency of the human eye lens depends on the properties of the a- crystallin and py-crystallin families of proteins, which accumulate to very high concentrations in mature lens fiber cells. The 0- and y-crystallins are thought to be primarily structural proteins while a-crystallin possess …
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Folding, stability and aggregation of the long-lived eye lens protein human gamma D crystallin
… found in high concentrations in the human eye lens. H[gamma]D-Crys and other crystallins are found in insoluble protein inclusions associated with the eye disease cataract. H[gamma]D-Crys is expressed in utero and does not regenerate during life, thus necessitating high stability and …
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Functional, Biochemical and Molecular Analyses of the *Cold Stable Eye Lens Crystallins From the Antarctic Toothfish Dissostichus Mawsoni
… basic isoforms cannot. Solubility of toothfish lens alpha, beta and gamma crystallins are similar to which has been previously reported for cow and humans. Thus, the long-lived, cold-adapted Antarctic toothfish lens is an attractive model system for further investigations into lens crystallin …
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Novel thermoluminescent dosemeter for the measurement of the eye lens operational dose equivalent in mixed neutron-gamma radiation fields
… reducing the equivalent dose limit for the eye lens of a nuclear energy worker from 150 mSv to 50 mSv in a one-year dosimetry period and to 100 mSv in a five-year dosimetry period, and adding the personal dose equivalent at 3mm soft-tissue depth, Hp(3), to the list of Radiation Protection …
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A new method of aging gray squirrels (Sciurus carolinensis) by use of cementum annuli
… tooth development and cementum annuli as with eye lens weights. Tooth sectioning had the added advantage of being able to separate the adults into year classes. Testing with formalin preserved known-age teeth showed that the razor section method is accurate for aging adult squirrels. Dry stored …
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An investigation of early radiation damage in exposed eye-lenses of rainbow trout
… non-human biota and potentially to the study of eye-lens damage in humans by investigating the effects of low-energy X-rays on the lenses of rainbow trout. Lenses were cultured and irradiated to doses up to 2.210 Gy with low-energy X-rays of 40 kV. Laser focal analysis was used to track changes …
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The characterization of human [gamma]D-crystallin mutants and their differential interactions with the lens chaperone [alpha]B-crystallin
… blindness worldwide, is the opacification of the eye lens. In.age-related cataract, as well as roughly one half of congenital cataract cases, aggregation or precipitation of crystallin proteins results in the formation of large structures that scatter light, preventing the pinpoint focusing on the …
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Studio sui calamari Loligo vulgaris (Lamarck, 1798) e Loligo forbesii (Steenstrup, 1856) delle acque della Sardegna
… on the species. The reading of the age from the eye lens, tested here for the first time on cephalopods decapods, has allowed to estimate for both species a life cycle of about 18-20 months. For both squids were also performed morphometric analysis of the beaks and calculated specific …
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Pathological and physiological relationships of parasitic disease in a select cottontail rabbit population
… (p<.01) correlation of -0.57 was found between eye lens weights and the presence of Cuterebra maggots. A significant (p<.05) correlation of 0.33 was found between serum corticoid levels and numbers of ticks recovered. These results indicate that parasites may, under some conditions, operate as a …
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Influence of dietary Mirex and nutritive restriction on cottontail rabbit reproductive physiology
… II. Decreased feed intake and increased eye lens weights were observed in Mirex-treated rabbits in both Experiment I and II. Mirex treatment did not adversely affect the reproductive characteristics examined in either experiment. In Experiment III, 38 females were fed either ad libitum or …
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Characterization of the unfolding, refolding, and aggregation pathways of two protein implicated in cataractogenesis : human gamma D and human gamma S crystallin
… are major proteins of the human eye lens and are components of cataracts. H[gamma]D-Crys is expressed early in life in the lens cortex while H[gamma]S-Crys is expressed throughout life in the lens epithelial cells. Both are primarily β-sheet proteins made up of four Greek keys …
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Effects of n-acetylcysteine amide in preventing/treating cataracts
<p>"Cataract, the opacification of an eye lens, is a common pathological abnormality of the lens accounting for approximately 50% of all blindness. The only effective treatment currently available for a cataract is the surgical removal of the affected lens and replacement with an artificial lens …
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Durham All-Sky Camera (DAC)
… of Durham. The DAC consisted of a Fujinon fish-eye lens coupled to a monochrome 640-by-480-pixel CCD camera (DMK-21BF04 model from the ImagingSource) housed in an 8-inch Perspex dome. After construction, the images were taken of the night sky in order to determine the properties of DAC. The …
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Modeling Ozark Caves with Structure-from-Motion Photogrammetry: An Assessment of Stand-Alone Photogrammetry for 3-Dimensional Cave Survey
… source, as well as utilizing a wide angle, fish eye lens, to capture scene information that is not perpendicular to the camera's field of view. Images are later processed into 3D models using Agisoft’s PhotoScan. </p> <p>Four caves were modeled using the method, with varying levels of success. …
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Mechanism of the efficient quenching of tryptophan fluorescence in human gamma crystallin
… (H[gamma]S-Crys) are both very stable eye lens protein that must remain soluble and folded throughout the human lifetime. Aggregation of non-native or covalently damaged H[gamma]D-Crys or H[gamma]S-Crys is associated with the prevalent eye disease mature-onset cataract. Both …
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