A functional MRI shows the use of oxygen in different brain areas. The Deoxyhemoglobin in blood absorbs a radiowave signal and later emits it (sends it back out). Oxyhemoglobin does not. When an area of the brain is active, the blood flow to that area increases and more oxyhemoglobin is delivered to supply the active cells with oxygen. This means less of the signal is absorbed. An active area of the brain absorbs and emits less energy than a less active area. This can be seen live as it is happening when different areas of the brain 'light up' on the images as they become less active.
My Prerogative
"My Prerogative" is a song first released in 1988 in the United States and then recorded again in 2004. The earlier version was by Bobby Brown. The 2004 version was by Britney Spears. Other people have covered the song since then. It has been sampled in other songs.
Cultural icon
A cultural icon can be a symbol, logo, picture, name, face, person, building, or other image. It is easily recognized and generally represents an object or idea with great cultural significance to a wide cultural group. It has a special status as representing, or important to, or loved by, a particular group of people, a place, or a period in history.
In the media, many well-known examples of popular culture have been called "iconic". Some writers say that the word is overused.
According to "Times of India":
Brands can show social values and changes, but many people have become tired of them. Many brands want to be cultural icons, but fail. Cultural icons are often timeless, imprinted in our consciousness. They can go through several stages, from "rumblings, undercurrents" via "catharsis, explosion" and "mass acceptance, ripple effect" to "glorification, representative value". While brands are rational and driven by features, cultural icons are emotional, free, driven by feeling, and creating emotional bonds. An example of "branding" might include the wearing of a consistent fashion look by such music stars as Michael Jackson or Elvis Presley, making them instantly recognizable. Royal or church clothing could also be understood as a form of emotional iconography.
Examples include: Andy Warhol, Budweiser, BMW, Chanel, Coca-Cola, Guinness, Harley-Davidson, LEGO, Martha Stewart, Nike, Norman Rockwell, Vuitton, Škoda Auto...
Cultural icons may be national, regional or about a city. And they can be symbols for a nation, or can show the values held by that state. For example, France uses Marianne as a symbol of the French Revolution. Bruce Lee is a symbol for the martial arts and philosophical culture of insight and knowledge in the entire world. Charlie Chaplin symbolises comical action while Clint Eastwood is a symbol for strength and masculinity. Jackie Chan is a global icon of comical stunts and martial arts based action. Salvador Dalí is the worldwide icon for the bizarre and eccentric.
Some writers say that the terms "icon" and "iconic" have been overused. A writer in "Liverpool Daily Post" calls "iconic" "a word that makes my flesh creep", a word "pressed into service to describe almost anything". The "Christian Examiner" added "iconic" and "amazing" to its list of overused words. It found over 18,000 "iconic" references in news stories alone, with another 30,000 for "icon", including use of it for SpongeBob SquarePants.
Sciadopitys
Sciadopitys, the Japanese umbrella-pine, is a unique conifer. It is endemic to Japan, and the sole surviving member of the family Sciadopityaceae. It is a living fossil with no close relatives: its fossils date from 230 million years ago.
It is an evergreen tree that can grow 15-27m tall. Its brown main shoots have whorls of 7–12 cm long flexible green "cladodes". These look like, and perform the function of, leaves but are actually composed of stem tissue. Occasionally, a cladode will fork and produce a bud in the 'v' of the fork, just like a normal stem.
The cones are 6–11 cm long, mature in about 18 months, and have flattish scales that open to release the seeds.
It is a very attractive tree and is popular in gardens, despite its slow growth rate and high cost. Koyamaki was chosen as the Japanese Imperial crest for Prince Hisahito of Akishino, currently third in line to the Chrysanthemum Throne.
The plant was first introduced to Europe by John Gould Veitch in September 1860.
Infrared microspectroscopy has identified conifers of the family Sciadopityaceae as the principal source of Baltic amber.
General-purpose machine gun
A general-purpose machine gun (GPMG) is a machine gun which gets its ammunition from a belt. It can be used in many different roles: it can support infantry from a bipod or tripod or be put onto a helicopter or armoured vehicle. It can provide fire support for vehicles or infantry from a variety of mounts.
A general-purpose machine gun is generally a medium machine gun. It also fires rifle cartridges like the 7.62×51mm NATO or 7.92x57mm Mauser. It is usually used from a bipod, tripod or on a vehicle. This is because it is usually too powerful and heavy to be fired well on foot or while moving.
Some examples of general-purpose machine guns are:
Yamashiro Province
Kyoto is in the former Yamashiro Province.
In 794, the capital of Japan was in Yamashiro. It remained in the province until the Imperial court moved to Tokyo in the 1870s.
During the Muromachi Period, the administrative seat of the Ashikaga Shogunate was in this province.
In the Meiji period, the provinces of Japan were converted into prefectures. Maps of Japan and Yamashiro Province were reformed in the 1870s.
The Kamo Shrines were the chief Shinto shrines ("ichinomiya") of Yamashiro. These are the Kamigamo Shrine and the Shimogamo Shrine.
Symphyla
Symphyla are soil-dwelling arthropods in the subphylum Myriapoda.
They are relatives of centipedes. Symphylans look like centipedes, but are smaller and translucent. They move through the pores between soil particles. They are found from the surface down to a depth of about 50 cm. They eat decaying vegetation, and can do harm in agriculture by eating seeds, roots, and root hairs in cultivated soil.
They feed on decayed vegetation.
Pauropod
Pauropods are a type of myriapod. They form the only order in the class Pauropoda. About 500 species in four families are found worldwide, living in soil and leaf mold.
Pauropoda are tiny soil myriapods, 0.5-1.5mm in length, with 8-11 body segments. The body appears to have fewer segments when viewed from above, because the dorsal shields (tergites) are fused in pairs. The true segments can be seen from the ventral side, each segment bearing a single pair of walking legs. A characteristic feature of pauropods is their branched antennae.
Defence against herbivory
Defence against herbivory describes plant defences to avoid being eaten. There are many adaptations which improve the survival and reproduction of plants by reducing the impact of herbivores.
Many plants produce chemicals which change the behaviour, growth, or survival of herbivores. These chemical defences can act as repellents or toxins to herbivores, or reduce plant digestibility. Some plants, known as hyperaccumulators, specialise in storing heavy metals which are toxic to animals.
Some plants encourage the presence of natural enemies of herbivores, which in turn protect the plant. Some plants provide a home for ants which defend the plant strongly.
Other defensive strategies used by plants include escaping or avoiding herbivores in time or in place. They may grow where plants are not easily found or got at by herbivores. They may grow when herbivores are not around. Herbivores may get diverted towards non-essential parts, or a plant may be able to recover from the damage caused by herbivory.
Each type of defence can be either "constitutive" (always present in the plant), or "induced" (produced in reaction to damage or stress caused by herbivores). Plants can and do react to damage.