Arne Engstrom – författare

Biological Ultrastructure focuses on the ultrastructure of biological systems, including microscopy and the roles of amino acids, lipoproteins, and carbohydrates. The manuscript first offers information on the methods in ultrastructural research and the principles of molecular structure. Topics include application of electron microscopy and x-ray diffraction, electronic theory of valency, spatial arrangement, and aggregation of molecules and interaction with water. The book then examines the role of proteins and lipids, including amino acids, polypeptide chains, natural lipoproteins, and structure and properties of isolated lipid molecules. The publication underscores the role of carbohydrates and nucleic acids, as well as monosaccharides, disaccharides, polysaccharides, structure of nucleic acids, viruses, and cell nucleus chromosomes and genes. The text also takes a look at the role of ultrastructure in biology and medicine and the role of mineral salts. The manuscript is a valuable source of data for readers interested in biological ultrastructure.

X-ray Optics and X-ray Microanalysis covers the proceedings of the Symposium on X-ray Optics and X-ray Microanalysis, held at Stanford University on August 22-24, 1962. The book focuses on X-ray microscopy, microradiography, radiation and irradiation, and X-ray microanalysis. The selection first offers information on the methods of X-ray microscopy and X-ray absorption microanalysis. Discussions focus on X-ray scanning microscopy, contact microradiography, point projection microscopy, and total dry-weight determinations. The text then takes a look at X-ray microanalysis in biology and medicine; electron microscopic enlargements of X-ray absorption micrographs; and automation in microradiography. The publication examines the production of Fresnel zone plates for extreme ultraviolet and soft X radiation; quantitative microradiographic studies of human epidermis; and irradiation effect on total organic nerve-cell material determined by integrating X-ray absorption. The manuscript then reviews the calculation of fluorescence excited by characteristic radiation in the X-ray microanalyzer and the method for calculating the absorption correction in electron-probe microanalysis. The selection is a valuable reference for readers interested in X-ray technology.