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The Principles of Leather Manufacture by H. R. Procter
The famous reference source H. R. Procter, The Principles of Leather Manufacture, explores chemistry and the processes undertaken in the manufacture of leather. Starting with a general overview relating to the historical background and introduction concepts in leather manufacture, it points to where the role of the living cell plays, the causative agents for putrefaction, and also to antiseptics and disinfectants. It also covers the chemical content of hides, the structure and growth of skin, and the chemical processes by which it gets tanned - alum, chrome, and vegetable tanning. The book also goes into the matter of physical chemistry of the fibers of hides and water treatment in tanneries and methods for depilation, deliming, and bating. The book is very valuable for any readers interested in the chemical processes involved in leathering, giving both theoretical knowledge and some practical insight into the tanning industry.
Author(s): H. R. Procter
NA Pages 
Materials Science for Engineers
This lecture note deals with the important areas that explain the interplay of materials, structure, and properties as tackled by the engineers. Metallurgy to crystal physics and Neumann's symmetry principle also have been dealt with. Equilibrium thermodynamics, neutron diffraction, and spectroscopy discussed alongside the major classes of materials and emerging nanostructured materials have also been dealt in this note. Since the material emphasizes practical applications, it is presented within the framework of advanced concepts like Moore's law and its implications for materials engineering. The note will prove useful to both engineering students and practicing engineers, and it discusses the scientific method as applied to questions of material selection and performance.
Author(s): Prof. Dr. Peter Moeck
93 Pages
Lecture note on earth material: Fundamentals of earth materials, strategic minerals, metals, and their geochemical importance and significance Earth materials-Atoms and elements, elements and their formation in the universe, cosmochemistry Chemical bonds that characterize Earth materials with symmetry, lattices, point groups, and space groups. It further discusses metamorphic petrology, which is rich in dealing with the processes and transformations that occur in Earth's crust. The resource is also important to students of geology, mineralogy, and other related courses for it provides an overview of the material composition and structure of the Earth.
Author(s): NA
104 Pages