Before we comment further on these pathological conditions, we should remember that changes in the state of the hypothalamus within physiological limits distinguish sleep from wakefulness.

Before considering these elements in more detail, an additional requirement should be stated.

Before commercial Internet access became common, these networks of BBSes provided regional and international e-mail and message bases.

Before that, it was about 7 censuses, most part of these previous censuses was undertaken during Soviet ( USSR ) control.

) Before a major fire, typical chaparral plant communities are dominated by manzanita, chamise ( also called greasewood or Adenostoma fasciculatum ) and Ceanothus species, Toyon ( which can sometimes be interspersed with scrub oaks ), and other drought-resistant shrubs with hard ( sclerophyllous ) leaves ; these plants resprout ( see resprouter ) from underground burls after a fire.

" Before the production of written languages, dance was one of the methods of passing these stories down from generation to generation.

Before these modifications, the design of their shoulders was closer to instruments of the violin family.

Before these privileges were legislated, these groups of handicraft workers were simply called ' handicraft associations '.

Before the Test series started he scored consecutive centuries against Tasmania and Australia A these were his first in two years.

Before consolidation of many of these rural school districts in the last half of the twentieth century, Indiana high schools had fewer students than those of most other states ; basketball was a natural game for these schools since it only required five starters and a few reserves.

Before he died, Marx asked Engels to write up these ideas, which were published in 1884 under the title The Origin of the Family, Private Property and the State.

Before that, most of these patterns were more connected to geographical regions than to any clan.

Before Franklin D. Roosevelt, attempts at a third term were encouraged by supporters of Ulysses S. Grant and Theodore Roosevelt ; neither of these attempts succeeded.

Before the time of Flavius, these formularies are said to have been secret and known only to the priests.

Before these monsters the hero's courage failed and by them was led away to eternal punishment.

Before 1900, England had none of these except for the civil registration of births, marriages, and burials briefly attempted under the Commonwealth ( 1653 – 1660 ) and an even more short-lived initiative of the same kind in 1694 in connection with the attempt to raise a tax on the occasion of every birth, marriage, and death — paupers excepted.

Before the start of World War II, Germany started building U-boats and training crews, labeling these activities as " research " or concealing them using other covers.

Before and during his career as a writer, he attempted to be a publisher, printer, businessman, critic, and politician ; he failed in all of these efforts.

Before 1991 these judges were known as District Justices and addressed as " Your Worship ".

Before universal algebra came along, many theorems ( most notably the isomorphism theorems ) were proved separately in all of these fields, but with universal algebra, they can be proven once and for all for every kind of algebraic system.

Before printer's magenta was invented in the 1890s for CMYK printing, and electric magenta was invented in the 1980s for computer displays, these two artificially engineered colors were preceded by the color displayed at right, which is the color originally called fuchsine made from coal tar dyes in the year 1859.

Before these royal marriages, Darius married a commoner with whom he had three sons, Artobarzanes ( the first born ), Arabignes and Arsamenes, while daughters are not known.

Before these plans could come to effect however, the central government declared the city a protected townscape.

Before Sapir it was generally considered impossible to apply the methods of historical linguistics to languages of indigenous peoples because they were believed to be more primitive than the Indo-European languages.

Before the invention of reliable electrical methods, hot tube and flame methods were used.

Before the advent of modern computers numerical methods often depended on hand interpolation in large printed tables.

Before his methods were commercialised in 1987 his laboratory was the only centre carrying out DNA fingerprinting in the world, and during this period of about two or three years it was very busy, receiving inquiries from all over the globe.

Before, one of the best methods to stay warm during the tour was to wear newspapers underneath the clothes.

Before the advent of the starter motor, engines were started by various methods including wind-up springs, gun powder cylinders, and human-powered techniques such as a removable crank handle which engaged the front of the crankshaft, pulling on an airplane propeller, or pulling a cord that was wound around an open-face pulley.

Before the advent of the aforementioned software, many users had to rely on on-screen keyboards and alternative text input methods like Dasher.

Before considering the propagation of action potentials along axons and their termination at the synaptic knobs, it is helpful to consider the methods by which action potentials can be initiated at the axon hillock.

Before the key exchange system was cracked leading to even easier methods, cheaters repeated encrypted " monster killed " message packets, each an encrypted Blowfish block, to illegitimately gain experience points quickly.

Before 1982, the Japanese variety of these mushrooms could only be grown in traditional locations using ancient methods.

Before 2009 the Organisation for Economic Co-operation and Development ( OECD ) had not validated any alternative methods for testing eye or skin irritation potential.

Before Kodachrome film was marketed, color photography had been achieved using additive methods and materials such as Autochrome and Dufaycolor, which were the first practical color processes.

Before birth, complex ultrasounds performed routinely during pregnancy may indicate the presence of cerebral abnormality, but this method of diagnosis should be complemented by other methods, such as genetic studies and NMR, and the examination is not recommended as part of routine ultrasound examinations, unless family medical history or other reasons for suspecting brain malformation are present.

Before February 2010, it was pointed out that the reliability of methods to asses the age of death for mummies in general was uncertain.

Before true-waterproof zippers were invented, other methods of keeping the suit waterproof at the entry point had to be devised, with the most common being a long rubber entry tunnel which would be flattened shut, then rolled together from the sides and finally folded and clamped with a metal clip.

Before the mid 19th century when cheap mild steel became available due to new methods of steelmaking, knives ( and other edged tools ) were made by welding a strip of steel on to the piece of iron that was to be formed into a knife, or sandwiching a strip of steel between two pieces of iron.

" Before the production of written languages, dance was one of the methods of passing these stories down from generation to generation.

" Before the production of written languages, dance was one of the methods of passing these stories down from generation to generation.

Before it lost its top in Hurricane Opal in October 1995, the Boogerman Pine was 63 m ( 207 ft ) tall as determined by Will Blozan and Robert Leverett using ground-based measurement methods.

Before him, these problems were solved using arithmetical methods.

Before numerical computing methods were readily available, acceleration was only attainable by differentiating cam lift profiles twice, once for velocity and again for acceleration.

Before leaving the Mirror Universe, Kirk gave an impassioned speech in which he told Mirror-Spock that the Empire could not survive through its current violent methods, that it was illogical, and Mirror-Spock was illogical for supporting the Empire.

Before the advent of coordinate-independent methods, it was necessary to work with vector fields using their components in coordinate charts.