WorldCat Identities

Schwan, Herman P.

Overview
Works: 12 works in 21 publications in 1 language and 445 library holdings
Genres: Conference proceedings 
Roles: Editor
Classifications: R856, 620.8
Publication Timeline
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Most widely held works by Herman P Schwan
Biological engineering by Herman P., ed Schwan( Book )
10 editions published between 1969 and 1993 in English and Undetermined and held by 434 WorldCat member libraries worldwide
SCATTERING AND ABSORPTION OF MICROWAVES BY DISSIPATIVE DIELECTRIC OBJECTS: THE BIOLOGICAL SIGNIFICANCE AND HAZARDS TO MANKIND ( )
1 edition published in 1963 in English and held by 2 WorldCat member libraries worldwide
The relative absorption cross section of mankind exposed to nonionizing microwave radiation was determined using doll and sphere phantoms whose electrical properties simulated those of a human being. The investigation proceeded in three stages of increasing difficulty: (1) theoretical and experimental study of homogeneous phantoms, having the electrical properties of muscle tissue; (2) theoretical studies of two-layer phantoms, having the electrical properties of muscle tissue and subcutaneous fat; and (3) ex trapolation to three-layer phantoms, having the electrical properties of muscle tissue, subcu taneous fat, and skin. The investigation at each stage resulted in certain generalizations which could be used as a guide to the investigations at the succeeding stage. In this way both the theoretical and experimental work necessary was simplified. The final stage involved a synthesis of all the previous work so that the relative absorption cross section of mankind could be predicted with confidence for the total frequency range from 400 to 10000 Mc/s
The measurement of the complex dielectric constant of protein solutions at ultra high frequencies: dielectric properties of hemoglobin bound water ( Book )
1 edition published in 1967 in English and held by 1 WorldCat member library worldwide
A report is given of work undertaken to relate the measured values of the complex dielectric constant of the globular protein, hemoglobin, in solution, to certain structural features of the hemoglobin molecule (namely water bound to the surface and polar side chains extending out from the surface). (Author)
Current Microwave Studies. Appendix I ( Book )
1 edition published in 1971 in English and held by 1 WorldCat member library worldwide
Experimental studies were undertaken to evaluate if pulsed fields may act differently on biological systems than continued fields of the same average power. The conclusion of this work confirmed theoretical predictions that field evoked forces act at best as CW fields of the same average power. Calculations which concern the possibility of creating 'hot spots' in tissues by microwave irradiation were performed. The conclusion of this work is that hot spots are possible in objects with a radius of curvature up to 5 cm, but not likely in man. Animal work is therefore not necessarily of significance for man
The electrical properties of the mitochondrial membrane ( Book )
1 edition published in 1959 in English and held by 1 WorldCat member library worldwide
The electrical conductance and dielectric constant of the interior of erythrocytes ( Book )
1 edition published in 1958 in English and held by 1 WorldCat member library worldwide
Interactions between Electromagnetic Fields ( Book )
1 edition published in 1985 in English and held by 1 WorldCat member library worldwide
We applied for this grant to support a workshop at Erice, Italy. This workshop has been commonly called 'Erice School' and the main subject of this workshop is the interaction of electromagnetic fields with biological cells and molecules. The grant from ONR enabled us to invite American scientists to participants in this workshop and deliver scientific papers. The duration of the Erice School was ten days. Therefore, we had sufficient time to discuss the problems of electromagnetic radiations. Vigorous discussions took place during official sessions and during private conversations. The participants of this workshop are mostly those who have been active in the research on bioelectromagnetics, but there are some numbers of speakers who discussed the basic electrical and magnetic properties of polyelectrolytes, biological membranes and tissue. The workshop was unique in that there were participants with a variety of training backgrounds. This enabled us to exchange the information between applied scientists and basic scientists. Also, active exchanges of opinions took place between biological scientists and physical scientists
The time constants of pearl-chain formation ( Book )
1 edition published in 1960 in English and held by 1 WorldCat member library worldwide
The time constants involved in the pearl-chain formation are of the order of a second for the radius of 1 micron, and they are porportional to the cube of the radius. The time constants are not strongly dependent on the field intensity when it is small, and they are inversely proportional to the square of the field intensity when it is large. The transition between the two regions occurs near the threshold. For particles of several microns or of larger sizes, the time constants become as large as hundreds of seconds, and consequently there exists a danger of observing erroneous threshold values in experimental works. The pulsed applied field is as effective as is expected from its r.m.s. value for usual radar systems. The hazards due to heat become pronounced before the field intensity is large enough for the pearl-chain to form if the particle size is less han 10 micron. The phenomenon of pearl-chain formation was considered of no biological significance in the area of microwave hazards due to radar exposure. (Author)
Microwaves and Thermoregulation: Historical Intrtoduction ( Book )
1 edition published in 1981 in English and held by 1 WorldCat member library worldwide
Building models of the thermoregulatory system and gaining insight about how RF energy is absorbed by the human body have been two distinct disciplines with very little cross-fertilization for several decades. Their historical developments have much in common. In both cases, models of the human body were introduced which were initially very simple. These models were eventually replaced by increasing complex models providing ever-increasing predictive capability. I will first outline the history of thermal RF-tolerance and of thermoregulation and then conclude with a survey of recent attempts to merge these two areas. The models to be considered are: (1) RF and MW energy deposition, (2) human thermoregulation, and (3) thermoregulation and microwaves
Factors governing the use of microwave/radiofrequency energies in cancer therapy ( )
1 edition published in 1981 in English and held by 1 WorldCat member library worldwide
Biological effects of non-ionizing radiations : cellular properties and interactions by Herman P Schwan( Book )
1 edition published in 1987 in English and held by 0 WorldCat member libraries worldwide
 
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Audience Level
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Audience level: 0.73 (from 0.00 for Microwaves ... to 1.00 for SCATTERING ...)
Alternative Names
Schwan, H. P.
Schwan, H. P. (Herman P.)
Languages
English (19)