Philately Stamps on Heart

Medical philately (Medical Theme on Stamps).

His chief work was in connection with nerve action. Since Galvani’s time, it was known that the nerve impulse was electrical in nature. Loewi, however, demonstrated that chemical phenomena were also involved. In 1921, working with nerves attached to frog’s heart, he showed that chemical substances were set free, when the nerve was stimulated. The fluid containing the substance could be used to ...

Medical philately (medical personalities on stamps).

Improving on Version Stamps

Optimistic distributed systems often rely on version vectors or their variants in order to track updates on replicated objects. Some of these mechanisms rely on some form of global configuration or distributed naming protocol in order to assign unique identifiers to each replica. These approaches are incompatible with replica creation under arbitrary partitions, a typical operation mode in mobi...

Radiology on postage stamps.

Transfusion medicine in philately.

Among the myriad postage stamps issued throughout the world, many have depicted persons and events in medical history. Presented here are a number of examples from my collection of medical philately that illustrate individuals who have made contributions in the field of transfusion medicine. Also included are representations of various subjects relating to the specialty. For thousands of years,...