Unlike commercial reactors, which are surrounded by concrete, the Pluto reactor had to be small and compact enough to fly, but durable enough to survive a trip to a potential target.

Unlike the early US nuclear reactors at Hanford, which consisted of a graphite core cooled by water, the Windscale Piles consisted of a graphite core cooled by air.

Unlike the Allies, who chose to pursue both the enrichment of uranium and production of plutonium in reactors, German scientists elected to focus on plutonium production, as the industrial complex required to make weapons this way was less expensive.

Unlike most reactors that have been built since, this first one had no radiation shielding and no cooling system of any kind.

Unlike the other seven reactors of this program, it did not use a steam turbine, but instead used a nitrogen coolant under several atmospheres of pressure to drive a closed-cycle gas turbine.

Unlike many pressurized water reactors, but like some other seaside facilities in Southern California, the San Onofre plant uses seawater for cooling, and thus lacks the iconic large cooling towers typically associated with nuclear generating stations.

Unlike its predecessor DES, AES does not use a Feistel network.

Unlike earlier texts like Recipes for Fifty-Two Ailments, which was excavated in the 1970s from a tomb that had been sealed in 168 BCE, the Inner Canon rejected the influence of spirits and the use of magic.

Unlike the frequency domain approach, the use of the state space representation is not limited to systems with linear components and zero initial conditions.

Unlike in many other European countries, the general image of Święty Mikołaj in Poland is basically no different to the one of the Anglo-Saxon Santa Claus ( he is said to live in the North Pole, wear red clothes and a white beard, use reindeers to pull his sleigh, or enter houses via the chimney ).

Unlike other leftist punk bands who use more direct sloganeering, Dead Kennedys ' lyrics were often snide.

Unlike a phone book, however, DNS can be quickly updated and these updates distributed, allowing a service's location on the network to change without affecting the end users, who continue to use the same hostname.

Unlike DLP systems ( where it is possible to use the same procedure for squaring and multiplication ) the EC addition is significantly different for doubling () and general addition () depending on the coordinate system used.

Unlike Common Lisp, Scheme existed at the time Stallman was rewriting Gosling Emacs into GNU Emacs, but he chose not to use it because of its comparatively poor performance on workstations, and he wanted to develop a dialect which he thought would be more easily optimized.

Unlike foil and sabre, Épée does not use " right of way ", and allows simultaneous hits by both fencers.

Unlike furigana, the use of okurigana is a mandatory part of the written language.

Unlike Christian fundamentalist groups, Islamist groups do not use the term fundamentalist to refer to themselves.

Unlike D & D, however, the first two editions of Gamma World do not use a concept of character class, and increases in Rank do not affect the character's skills or combat abilities.

Unlike denaturing methods, such as SDS-PAGE, native gel electrophoresis does not use a charged denaturing agent.

Unlike modern taxonomists, these authors did not use the suffix " ales " in naming their orders.

Unlike CT scans or traditional X-rays, MRI does not use ionizing radiation.

Unlike most machine pistols, which use magazines in the pistol grip or in a vertical box, the M950 uses a 50-round or 100-round helical magazine which is mounted parallel to the barrel.

Unlike most other video game consoles of its time, the Neo Geo does not use tilemap background layers.

Unlike Texas hold ' em, a player cannot play four or five of the cards on the board with fewer than two of his own, nor can a player use three or four hole cards to disguise a strong hand.

Unlike other common energy storage in prior use such as wood or coal, electricity must be used as it is being generated, or converted immediately into another form of energy such as potential, kinetic or chemical.

Unlike the cyanobacteria, these bacteria do not produce oxygen ; they typically use hydrogen sulfide rather than water as the electron donor.

Unlike the rotary engine, however, radial engines use a conventional rotating crankshaft in a fixed engine block.

Unlike the version used for the DVD, Sony Pictures cropped out the top and bottom parts of the frame, while restoring previously cropped images on the sides, from the 35 mm film source, to use the entire 16: 9 frame.

* Unlike omnibuses, but like trolleybuses, ( electric ) trams give off no exhaust emissions at point of use.

Unlike virtual memory, a system virtual machine allowed the user to use privileged instructions in their code.

Unlike his contemporaries, Corbusier often chose to use timber windows rather than metal ones.

Unlike most cranes, it has a relatively large head and a proportionately thin neck.

Unlike Zealous, these British ships suffered relatively severe damage in the engagement ; Goliath lost most of its rigging, suffered damage to all three masts and received over 60 casualties.

Unlike any other national cinemas, which developed in the context of relatively continuous and stable political systems, Germany witnesses major changes to its identity during the 20th Century.

Unlike other rare earth elements, metallic gadolinium is relatively stable in dry air.

Unlike many children, Simon was exposed to the idea that human behavior could be studied scientifically at a relatively young age due to the influence of his mother ’ s younger brother, Harold Merkel, who had studied economics at the University of Wisconsin – Madison under John R. Commons.

Unlike a solar eclipse, which can only be viewed from a certain relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of the Earth.

Unlike the Rosetta Stone, their hieroglyphic inscriptions were relatively intact, and though the inscriptions on the Rosetta Stone had been deciphered long before the discovery of the other copies of the decree, subsequent Egyptologists including Wallis Budge used these other inscriptions to further refine the actual hieroglyphs that must have been used in the lost portions of the hieroglyphic register on the Rosetta Stone.

Unlike East and West Germany, the two Yemens remained relatively friendly, though relations were often strained.

Unlike the sappable Hevea tree, these relatively small shrubs must be harvested whole and latex extracted from each cell.

Unlike some other former royal properties, the palace escaped relatively unscathed.

Unlike their omega-6 counterparts ( which can be cheaply produced from a variety of sources, such as corn and soybeans ), major sources of omega-3 fatty acids remain relatively rare and expensive.

Unlike a number of cities with this climate, Malé experiences relatively consistent temperatures throughout the course of the year, with an average high of 30 degrees Celsius and an average low of 27 degrees Celsius.

Unlike either Philip IV or Philip V, Charles is usually felt to have been a relatively conservative, " strait laced " king – he was " inclined to forms and stiff-necked in defence of his prerogatives ", but disinclined either to manipulate them to his own ends or achieve wider reform.

Unlike other stage actresses of her generation, she did relatively little Shakespeare, preferring the more modern dramatists such as Henrik Ibsen and new plays adapted from the novels of Henry James and Thomas Hardy among others.

Unlike many of small towns in North Dakota, Larimore has maintained a relatively stable population for the last forty years.

Unlike Marietta, Ohio's oldest city, Martins Ferry remained an unincorporated settlement for a relatively long time.

Unlike the Pan-Blue coalition, which consists of relatively equal-sized parties with very similar ideologies, the pan-green coalition contains the DPP, which is much larger and more moderate than the TSU.

Unlike coal company towns, Roaring Spring possesses a relatively wide variety of housing types without a hierarchical town plan, and unlike a model community like Kistler, no master plan appears at work like a template beneath the townscape.

Unlike heavier industrial centers in the greater region, such as Johnstown and Pittsburgh, Roaring Spring's population had remained relatively homogeneous in ethnic, racial and political terms, a historical factor that reinforced the outward social cohesiveness of the community.

Unlike Scotland, Irish tower houses were only defended with relatively light handguns and frequently reused older arrowloops, rather than more modern designs, to save money.

Unlike solitons ( another kind of nonlinear wave ), the energy of a shock wave dissipates relatively quickly with distance.

Unlike diff, the process of creating a delta file has two steps: first a signature file is created from file A, and then this ( relatively small ) signature and file B are used to create the delta file.

Unlike modern engines they have no radio, no cutting equipment, only a single ladder, and were relatively slow with a maximum speed of around, a comfortable cruising speed of, no power steering, and sensitive on corners.

Unlike Mark Rothko or Barnett Newman who organized their colors in a relatively simple way ( Rothko in the form of nebulous rectangles, Newman in thin lines on vast fields of color ), Still's arrangements are less regular.

Unlike the relatively small picasso triggerfish, the titan triggerfish poses a serious threat to inattentive divers due to its large size and powerful teeth.