THE NATURE OF MIGRAINE
It was, therefore, also with some hesitation that I accepted the invitation, humbly realizing that I can bring my audience nothing new, and when now, I nevertheless venture to try to speak about the nature of migraine seen from my point of view after a long life of work with migraineological problems, I do it to a very limited extent only on the basis of my own experience, but first and foremost because I base my opinion on the facts with which friends and colleagues have enriched our knowledge through their research, not only through numerous literary publications and lectures, but also and not least through the answers to personal inquiries which I have received with thanks in the course of time.
SOME ASPECTS OF THE EPIDEMIOLOGY OF MIGRAINE IN DENMARK
I AM TO GIVE A brief account of a clinical-statistical study which we have made concerning a number of elements of the epidemiological pattern of migraine. It is a question of (1) the age of onset of clinically manifest migraine and (2) the relation of the age of onset to the sex of the patients and to (3) the adrenarche, the menarche, and the menstrual cycle, and (4) the menarche age in migraine patients, besides, (5) the sex distribution among migraine patients, and finally (6) the prevalence of migraine in men and women in the different age groups.
Numerical Simulation for Natural State of Two-Phase Liquid Dominated Geothermal Reservoir with Steam Cap Underlying Brine Reservoir
Hydrothermal reservoir which liquid-dominated hydrothermal reservoir is a type of geothermal reservoir that most widely used for power plant. The exploitation of mass and heat from the geothermal fluid will decrease the pressure in the reservoir over time. Therefore the pressure drop in the reservoir will have an impact on the formation of boiling zones or boiling will increase. The impacts are an increase in the fraction of steam, dryness, in the reservoir and with good vertical permeability will form a steam cap underlying the brine reservoir. The two- phase liquid dominated reservoir is sensitive to the porosity and difficult to assign average properties of the entire reservoir when there is boiling zone in some area of the reservoir. These paper showed successful development of two-phase liquid dominated geothermal reservoir and discussed the formation of steam cap above brine reservoir through numerical simulation for state natural conditions. The natural state modeling in steam cap shows a match with the conceptual model of the vapor-dominated developed. These paper also proofed the presence of transition zone, boiling zone, between steam cap and brine reservoir.