Several fields of discrete mathematics, particularly theoretical computer science, graph theory, and combinatorics, are important in addressing the challenging bioinformatics problems associated with understanding the tree of life.

Several institutions, besides those already mentioned, played important parts.

Several billion kilograms of polyesters are produced industrially annually, important products being polyethylene terephthalate, acrylate esters, and cellulose acetate.

Several important cinematic movements, including the Nouvelle Vague, began in the country.

Several types are existent in Qing dynasty and used in dishes of stewing hams ( 火腿炖肘子 ), and vegetables, or for a wide variety of soup and important soup stocks.

Several important institutional changes took place in this period, such as free and mandatory schooling introduced 1842 ( as first country in the world ), the abolishment of a previous national monopoly on trade in handicrafts in 1846, and a stock company law in 1848.

His critically acclaimed book Lyrics on Several Occasions of 1959, an amalgam of autobiography and annotated anthology, is an important source for studying the art of the lyricist in the golden age of American popular song.

Several formerly important franchise courts were not officially abolished until Courts Act of 1971.

Several important buildings and structures were built during this time, including the Kansas City City Hall and the Jackson County Courthouse — both added new skyscrapers to the city's growing skyline.

Several industry groups also recognize light pollution as an important issue.

Several types of molecules are particularly important during morphogenesis.

Several of the more important ways observations can be affected by human psychology are given below.

Several other important engravers also made cards, including Master ES and Martin Schongauer.

Several economically important products come from Rosaceae, including many edible fruits ( such as apples, apricots, plums, cherries, peaches, pears, raspberries, and strawberries ), almonds, and ornamental trees and shrubs ( such as roses, meadowsweets, photinias, firethorns, rowans, and hawthorns ).

Several important political innovations of classical antiquity came from the Greek city-states and the Roman Republic.

Several Referendums supported the state being in control of the most important utilities and energy companies.

Several important modern cities, including Stockholm and Lviv, were founded in the 1250s.

Several important cultural achievements were made in the decade, including publication of Roger Bacon's important scientific work Opus Majus and Thomas Aquinas ' Summa contra Gentiles.

Several lakesthe most important of which are Lake Herăstrău, Lake Floreasca, Lake Tei, and Lake Colentinastretch across the northern parts of the city, along the Colentina River, a tributary of the Dâmbovița.

Several singular oak trees, such as the Royal Oak in Britain and the Charter Oak in the United States, are of great historical or cultural importance ; for a list of important oaks, see Individual oak trees.

Several important trade routes from India and China ( including the Silk Road ) passed through Bactria and, as early as the Bronze Age, this had allowed the accumulation of vast amounts of wealth by the mostly nomadic population.

Several of Gauthier's students are now important moral, political, and legal philosophers in the United States and Canada.

Several important features of visual perception can be traced to the retinal encoding and processing of light.

Several important diseases of the nervous system are associated with dysfunctions of the dopamine system.

Several unusual applications, such as a nuclear battery or fuel for space ships with nuclear propulsion, have been proposed for the isotope < sup > 242m </ sup > Am, but they are as yet hindered by the scarcity and high price of this nuclear isomer.

Several space observatories did the same, including the Hubble Space Telescope, the ROSAT X-ray observing satellite, and significantly the Galileo spacecraft, then on its way to a rendezvous with Jupiter scheduled for 1995.

Several other significant changes took place due to the crisis: mankind discovered it could now tap into ultraplanar energies that were seen as magical forces, the stars were gone from the sky, dimensional nexi were uncovered and pacts with " demons " ( inhabitants of dimensions near in n-dimensional space to Tékumel's pocket dimension ) were made and a complex pantheon of " Gods " ( powerful extra-dimensional or multi-dimensional alien beings ) discovered.

Several space elevators lead to a giant " circumterran " space station that encircles Earth at geostationary altitude.

Several episodes of the American TV series Lost feature a wheel which can be physically turned in order to manipulate space and time.

Several external factors such as temperature, external fields ( electric, magnetic ), molecular crowding, limitation of space could have a big influence on the

Several design houses are active in this space, prominent names being:

Several commercial redevelopment opportunities were proposed by the D. C. government and consultants, including relocating the University of the District of Columbia to the campus or developing office and retail space.

Several adaptations combine to protect the woodpecker's brain from the substantial pounding that the pecking behaviour causes: it has a relatively thick skull with relatively spongy bone to cushion the brain ; there is very little cerebrospinal fluid in its small subarachnoid space ; the bird contracts mandibular muscles just before impact, thus transmitting the impact past the brain and allowing its whole body to help absorb the shock ; its relatively small brain is less prone to concussion than other animals '.

Several solar cells were mounted on the outside of the cylinder, and these provided electric power to the storage batteries inside the space probe.

Several parking lots became green space, and improvements were made to the landscaping.

Several recent additions, such as Argos, Lidl and Peacocks, are located in new retail spaces on the site of Pratt's but in common with other outer London high streets, retail recovery has been slow, and a substantial proportion of vacant space has been taken by a growing number of restaurants, bars and coffee shops.

Several different models of Hasselblad cameras were taken into space, all specially modified for the task.

Several earlier color order systems had placed colors into a three-dimensional color solid of one form or another, but Munsell was the first to separate hue, value, and chroma into perceptually uniform and independent dimensions, and was the first to systematically illustrate the colors in three-dimensional space.

Several months were spent working out the budget ; because of the disappointing box office returns of The Final Frontier, Paramount wanted to keep the sixth film's budget approximately the same as the previous installment, although the script called for space battles and new aliens.

Several of the 12 tracks were covers of pure Chicago blues ( side 1 kicking off strong with Otis Rush's " All Your Love " and Freddy King's hit instrumental " Hide Away " spelled without a space as “ Hideaway ”); Mayall wrote or arranged 5 ( such as " Double Crossing Time ", a slow blues with a scorching solo by cowriter Clapton ); and Eric debuted as lead vocalist, and began his practice of paying tribute to Robert Johnson, with " Ramblin ' on My Mind ".

Several assemblages can be stacked, depending on the available space ; this way the armour can be made of a modular nature, adaptable to the tactical situation.

Several highlights of Bright's tour of duty above Argama are the attack on Federation Headquarters at Jaburo and Kilimanjaro, Operation Maelstrom, and the final three-way battle between the fleet of AEUG, the Titans, and Axis Zeon near the Gryps Two space colony.

Several buildings were destroyed in World War II and some of the exhibition space is in the process of being reconstructed.

Several prominent academics like Henry Louis Gates, Jr. and Addison Gayle, Jr., established a new “ Black Aesthetic ” that “ placed the sources of contemporary black literature and culture in the communal music and oral folk tradition .” This new respect coupled with a growing Black Feminism led by Mary Helen Washington, Audre Lorde, Alice Walker, and others would create the space for the rediscovery of Hurston.

Several pieces of debris separated from the space station at around the time of its failure, including both solar panels, which removed its ability to generate power.

Several Open Source programs have become defining entries in their space, including the GIMP image editing system ; Sun's Java programming language and environment ; the MySQL database system ; the FreeBSD Unix operating system ; Sun's OpenOffice. org office productivity suite ; and the Wireshark network packet sniffer and protocol analyser.

Several major American space exploration " firsts " were launched from CCAFS, including the first U. S. earth satellite ( 1958 ), first U. S. astronaut ( 1961 ), first U. S. astronaut in orbit ( 1962 ), first two-man U. S. spacecraft ( 1965 ), first U. S. unmanned lunar landing ( 1966 ), and first three-man U. S. spacecraft ( 1968 ).

*: Several variants of MR, often also called " McCune's and Reischauer's ", differ from the original mostly in whether word endings are separated from the stem by a space, by a hyphen or not at all ; and if a hyphen or space is used, whether sound change is reflected in a stem's last and an ending's first consonant letter ( e. g. pur-i vs. pul-i ).