822 resultados para Life and Medical Sciences


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Contains notes taken by Harvard student Lyman Spalding during eleven chemistry lectures delivered by Harvard Professor Aaron Dexter (1750-1829) in the fall of 1795 and recipes prepared and used by Spalding in his medical practice in 1797. The recipes include elixir vitriol, containing liquor, Jamaica pepper, cinnamon, and ginger, and an electuary for a cough, containing oxymel squills (sea onion in honey), licorice, antimonium tartaricum potash (a compound of the chemical element antimony and a potassium-containing salt), and opium. The volume also contains writings about chemistry by Spalding, some of which appear transcribed from published sources, in undated entries, and a diary entry from 1799 regarding an experiment with water.

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Contains notes taken by Harvard student Lyman Spalding (1775-1821) from lectures on anatomy and surgery delivered by Harvard Professor John Warren (1753-1815) in 1795, as well a section entitled “Medical Observations,” which includes entries on “Vernal Debility,” or diseases occurring in the spring, and lung function. It is unclear if these are Spalding’s own writings or transcriptions from a published work. There is also text transcribed from “Elementa Medicinae,” published in 1780 by Scottish physician John Brown.

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In plant cells, as in all other cells, proteins are submitted to permanent turnover, and the intracellular content of a given protein depends on its rate of both synthesis and degradation. The life time of most proteins is shorter than that of the cell. Thus, in young leaves of Lemna minor, the average half-life of protein was estimated to be 7 days, and it was shorter under stress conditions (Davies 1982). Such observations mean that nitrogen and amino acid fluxes are both cylic and permanent. Although protein turnover may appear wasteful, in terms of energy, numerous studies have shown that proteolysis provides multiple functions in cell physiology, and is an essential regulatory mechanism of cell metabolism and development.

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Edition limited to 800 numbered sets.

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Includes bibliographical references.

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Salesman's sample for edition that was never published?

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Includes index.