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Ecological Composite Materials Based on Polylactide (PLA) and Organic Fillers: Coffee Grounds and Hen Eggshells Produced by the FDM Method: Mechanical, Thermal Properties, Stress Relaxation and Creep. [PDF]
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MEASUREMENT OF EGGSHELL STRENGTH*
Journal of Texture Studies, 1974AbstractTechniques used to measure the eggshell strength and associated parameters are reviewed. Much of the early research was based on crude instruments that did not adequately control test conditions, particularly the rate of applying force to the shell. Better instruments have been used recently to obtain precise readings. A significant advance has
PETER W. VOISEY, J. R. HUNT
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Relationship between eggshell strength and keratan sulfate of eggshell membranes
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2007Eggshell strength is an important factor in an effort to minimize eggshell breakage, which is a significant problem in the egg production industry. In the current study, we isolated and quantified the specific glycosaminoglycans (GAGs) from the calcified eggshell and shell membranes, which are related to eggshell strength.
Young Wan, Ha +3 more
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Techniques for measuring eggshell strength
Journal of Agricultural Engineering Research, 1974Abstract The investigation and development of experimental techniques used to study eggshell strength are reported herein. Numerous specimens are taken from a single egg and subjected to a four-point load flexure test. Specimen geometry, validity of elementary beam theory and influence of pads at load points are studied.
L.H. Nelson, J.M. Henderson
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A NON-DESTRUCTIVE EGGSHELL STRENGTH TESTER
Canadian Journal of Animal Science, 1970not available
Peter W. Voisey, W. F. Foster
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Eggshell strength in cuckoos and cowbirds
Ibis, 1991Parasitic cuckoos of the genus Clamator and parasitic cowbirds Molothrus spp. lay eggs that appear to be stronger than those of their hosts. Similar differences in eggshell strength between the eggs of the Cuculus/Cacomantis/Chrysococcyx cuckoos and their hosts are not apparent.
M. G. BROOKER, L. C. BROOKER
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Hen’s eggshell strength under impact loading
Journal of Food Engineering, 2009Abstract An experimental method for evaluation of an eggshell’s mechanical characteristics under impact loading is discussed. Proposed experimental set up enables recording of time history of the force at the contact area between the rod and eggshell, as well as the vibration response of the tested egg.
Šárka Nedomová +4 more
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The eggshell: strength, structure and function
British Poultry Science, 2010In making a journey through the literature of the last 50 years one can easily highlight a sequence of seminal works-but the route has not been direct and to avoid the many profitable diversions and detours that have enriched and deepened our collective understanding of the subject of eggshell structure and function is to do the subject a serious ...
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Evaluation of Compressive Strength of Eggshell Hydroxyapatite
Advanced Materials Research, 2011This paper presents an in-vitro evaluation of compressive strength of a locally produced hydroxyapatite from eggshell. Hydroxyapatite (HA) is a mineral that naturally occur in form of calcium apatite with the formula Ca5 (PO4)3(OH) but it is usually written as Ca10(PO4)6(OH).
W.M.A. Ibrahim, A.S. Mohamad Kasim
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