413 research outputs found
Letter from Grun T. Hill, Columbus, to Robert Jemison, Jr., September 20, 1862
No full textThis item is from the Robert Jemison, Jr. Papers. The collection spans the period from 1797 to 1960 and includes both the personal and business papers of Robert Jemison, Jr., along with papers of Robert Jemison (grandfather), William Jemison (father), Priscilla Jemison (wife), Cherokee Jemison Hargrove (daughter), and Andrew Coleman Hargrove (son-in-law), and Robert Jemison, Jr. (IV) of Birmingham (1878-1973). Included are the records of his grist and lumber mills, plantations, stage line, the Tuskaloosa Plank Road, toll bridges, ferries, postal contracts, and the North East and South West Railroad
Constructional design of echinoid endoskeleton: main structural components and their potential for biomimetic applications
No full textThe endoskeleton of echinoderms (Deuterostomia: Echinodermata) is of mesodermal origin and consists of cells, organic components, as well as an inorganic mineral matrix. The echinoderm skeleton forms a complex lattice-system, which represents a model structure for naturally inspired engineering in terms of construction, mechanical behaviour and functional design. The sea urchin (Echinodermata: Echinoidea) endoskeleton consists of three main structural components: test, dental apparatus and accessory appendages. Although, all parts of the echinoid skeleton consist of the same basic material, their microstructure displays a great potential in meeting several mechanical needs according to a direct and clear structure-function relationship. This versatility has allowed the echinoid skeleton to adapt to different activities such as structural support, defence, feeding, burrowing and cleaning. Although, constrained by energy and resource efficiency, many of the structures found in the echinoid skeleton are optimized in terms of functional performances. Therefore, these structures can be used as role models for bio-inspired solutions in various industrial sectors such as building constructions, robotics, biomedical and material engineering. The present review provides an overview of previous mechanical and biomimetic research on the echinoid endoskeleton, describing the current state of knowledge and providing a reference for future studies
Letter from Grun T. Hill, Columbus, to Robert Jemison, Jr., July 20, 1866
No full textThis item is from the Robert Jemison, Jr. Papers. The collection spans the period from 1797 to 1960 and includes both the personal and business papers of Robert Jemison, Jr., along with papers of Robert Jemison (grandfather), William Jemison (father), Priscilla Jemison (wife), Cherokee Jemison Hargrove (daughter), and Andrew Coleman Hargrove (son-in-law), and Robert Jemison, Jr. (IV) of Birmingham (1878-1973). Included are the records of his grist and lumber mills, plantations, stage line, the Tuskaloosa Plank Road, toll bridges, ferries, postal contracts, and the North East and South West Railroad
Letter from Grun T. Hill, Columbus, to Robert Jemison, Jr., August 18, 1864
No full textThis item is from the Robert Jemison, Jr. Papers. The collection spans the period from 1797 to 1960 and includes both the personal and business papers of Robert Jemison, Jr., along with papers of Robert Jemison (grandfather), William Jemison (father), Priscilla Jemison (wife), Cherokee Jemison Hargrove (daughter), and Andrew Coleman Hargrove (son-in-law), and Robert Jemison, Jr. (IV) of Birmingham (1878-1973). Included are the records of his grist and lumber mills, plantations, stage line, the Tuskaloosa Plank Road, toll bridges, ferries, postal contracts, and the North East and South West Railroad
On a fourth-order degenerate parabolic equation: global entropy estimates, existence, and qualitative behavior of solutions
No full textBy means of energy and entropy estimates, we prove existence and positivity results in higher space dimensions for degenerate parabolic equations of fourth order with nonnegative initial values. We discuss their asymptotic behavior for t --> infinity and give a counterexample to uniqueness
Quantification of component diversities within Circumalpine carbonates across the Paleogeen/Neogene transition.
No full textMicrofacies quantification: Assessing component diversity among circumalpine Paleogene and Neogene carbonates
No full textQuantifying component diversities along temporal and geographic gradients in Cenozoic circumalpine carbonates
No full textGEOGRAPHIC AND TEMPORAL GRADIENTS OF CIRCUMALPINE OLIGO-MIOCENE CARBONATES BASED ON HIGH RESOLUTION QUANTIFICATION OF COMPONENT DIVERSITY
No full textQuantification of component diversities within Circumalpine carbonate across the Paleogene/Neogene transition
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