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Erectile dysfunction (ED), also called impotence, is the type of sexual dysfunction in which the penis fails to become or stay erect during sexual activity. It is the most common sexual problem in men. Through its connection to self-image and to problems in sexual relationships, erectile dysfunction can cause psychological harm.
Philately is the study of postage stamps and postal history. It also refers to the collection, appreciation and research activities on stamps and other philatelic products. Philately involves more than just stamp collecting or the study of postage; it is possible to be a philatelist without owning any stamps. For instance, the stamps being studied may be very rare or reside only in museums.
A postage stamp is a small piece of paper issued by a post office, postal administration, or other authorized vendors to customers who pay postage, who then affix the stamp to the face or address-side of any item of mail—an envelope or other postal cover —that they wish to send. The item is then processed by the postal system, where a postmark or cancellation mark—in modern usage indicating date and point of origin of mailing—is applied to the stamp and its left and right sides to prevent its reuse. The item is then delivered to its addressee.
The mail or post is a system for physically transporting postcards, letters, and parcels. A postal service can be private or public, though many governments place restrictions on private systems. Since the mid-19th century, national postal systems have generally been established as a government monopoly, with a fee on the article prepaid. Proof of payment is usually in the form of an adhesive postage stamp, but a postage meter is also used for bulk mailing. With the advent of email, the retronym "snail mail" was coined.
For postage stamps, separation is the means by which individual stamps are made easily detachable from each other.
Postage stamp reuse is the technique of fraudulently reusing postage stamps from sent mail to avoid paying the cost of postage.
A perforation is a small hole in a thin material or web. There is usually more than one perforation in an organized fashion, where all of the holes collectively are called a perforation. The process of creating perforations is called perforating, which involves puncturing the workpiece with a tool.
Postage stamps and postal history of Great Britain surveys postal history from the United Kingdom and the postage stamps issued by that country and its various historical territories until the present day.
A coil stamp is a type of postage stamp sold in strips one stamp wide. The name derives from the usual handling of long strips, which is to coil them into rolls, in a manner reminiscent of adhesive tape rolls. A large percentage of modern stamps are sold in coil form, because they are more amenable to mechanized handling in large quantities than either sheet stamps or booklet stamps.
A revenue stamp, tax stamp, duty stamp or fiscal stamp is a (usually) adhesive label used to collect taxes or fees on documents, tobacco, alcoholic drinks, drugs and medicines, playing cards, hunting licenses, firearm registration, and many other things. Typically, businesses purchase the stamps from the government, and attach them to taxed items as part of putting the items on sale, or in the case of documents, as part of filling out the form.
The postage stamps of Ireland are issued by the postal operator of the independent Irish state. Ireland was part of the United Kingdom of Great Britain and Ireland when the world's first postage stamps were issued in 1840. These stamps, and all subsequent British issues, were used in Ireland until the new Irish Government assumed power in 1922. Beginning on 17 February 1922, existing British stamps were overprinted with Irish text to provide some definitives until separate Irish issues became available. Following the overprints, a regular series of definitive stamps was produced by the new Department of Posts and Telegraphs, using domestic designs. These definitives were issued on 6 December 1922; the first was a 2d stamp, depicting a map of Ireland. Since then new images, and additional values as needed, have produced nine definitive series of different designs.
Nocturnal penile tumescence is a spontaneous erection of the penis during sleep or when waking up. Along with nocturnal clitoral tumescence, it is also known as sleep-related erection, morning glory or morning wood. Men without physiological erectile dysfunction or severe depression experience nocturnal penile tumescence, usually three to five times during a period of sleep, typically during rapid eye movement sleep. Nocturnal penile tumescence is believed to contribute to penile health.
The Rare 2d Coil was an experimental vertical coil stamp, denominated 2d, issued by the Irish Post Office in 1935 and is one of the scarcest, and most valuable, Irish stamps. It is often referred to by stamp collectors simply as "Scott 68b" or "SG 74b", being the Scott and Stanley Gibbons stamp catalogue numbers respectively.
This is a survey of the postage stamps and postal history of Estonia. The stamps of Estonia are issued by the postal administration Eesti Post which is the country's only provider of universal postal services.
An erection is a physiological phenomenon in which the penis becomes firm, engorged, and enlarged. Penile erection is the result of a complex interaction of psychological, neural, vascular, and endocrine factors, and is often associated with sexual arousal or sexual attraction, although erections can also be spontaneous. The shape, angle, and direction of an erection varies considerably in humans.
This is a survey of the postage stamps and postal history of Saint Helena.
The Washington–Franklin Issues are a series of definitive U.S. Postage stamps depicting George Washington and Benjamin Franklin, issued by the U.S. Post Office between 1908 and 1922. The distinctive feature of this issue is that it employs only two engraved heads set in ovals—Washington and Franklin in full profile—and replicates one or another of these portraits on every stamp denomination in the series. This is a significant departure from previous definitive issues, which had featured pantheons of famous Americans, with each portrait-image confined to a single denomination. At the same time, this break with the recent past represented a return to origins. Washington and Franklin, after all, had appeared on the first two American stamps, issued in 1847, and during the next fifteen years, each of the eight stamp denominations available featured either Washington or Franklin.
The British Library Philatelic Collections is the national philatelic collection of the United Kingdom with over 8 million items from around the world. It was established in 1891 as part of the British Museum Library, later to become the British Library, with the collection of Thomas Tapling. In addition to bequests and continuing donations, the library received consistent deposits by the Crown Agency and has become a primary research collection for British Empire and international history. The collections contain a wide range of artefacts in addition to postage stamps, from newspaper stamps to a press used to print the first British postage stamps.
The Halfpenny Yellow is the first postage stamp issued by the Crown Colony of Malta. Depicting Queen Victoria, it was only valid for local postage and it was originally issued on 1 December 1860. It was the only stamp issued by Malta for two and a half decades, and during this period various reprints were made with differences in colour shade, perforation and watermark. When control of Malta's postal service was transferred to the islands' colonial government on 1 January 1885, the stamp was withdrawn and it was replaced by a set of definitive stamps.
Nyasaland, now known as Malawi, first issued revenue stamps as British Central Africa in 1891 and continued to do so until the late 1980s.
References
- ↑ Allan H. Goroll; Albert G. Mulley (1 December 2001). Primary Care Medicine Recommendations. Lippincott Williams & Wilkins. pp. 688–. ISBN 978-0-7817-3352-6 . Retrieved 20 June 2011.
- ↑ Theodore A. Stern; John B. Herman; Peter L. Slavin (14 November 2003). Massachusetts General Hospital Guide to Primary Care Psychiatry. McGraw-Hill Professional. pp. 408–. ISBN 978-0-07-141001-4 . Retrieved 20 June 2011.
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