Combinations of the above techniques produce a " hybrid " or " hyphenated " technique .< ref name =" pmid9008869 "> Several examples are in popular use today and new hybrid techniques are under development.

Several brain imaging techniques, such as EEG and fMRI, have been used for physical measures of brain activity in these studies.

Several different techniques exist to study cells are

Several laboratory scale techniques for distillation exist ( see also distillation types ).

Several modern theories have ventured to explain this decline, including the breakdown of trade routes to supply the needed metals, the lack of trace impurities in the metals, the possible loss of knowledge on the crafting techniques through secrecy and lack of transmission, or a combination of all the above.

Several techniques are used by DJs as a means to better mix and blend recorded music.

Several decades after Pearson's work with early versions of meta-analysis, Glass published the first application of modern meta-analytic techniques and triggered their broad application across the social and biomedical sciences.

Several different telephone line modulation techniques are used by fax machines.

Several of the most common techniques for producing glass art include: blowing, kiln-casting, fusing, slumping, pate-de-verre, flame-working, hot-sculpting and cold-working.

Several common genotyping techniques include restriction fragment length polymorphism ( RFLP ), terminal restriction fragment length polymorphism ( t-RFLP ), amplified fragment length polymorphism ( AFLP ), and multiplex ligation-dependent probe amplification ( MLPA ).

Several of these siege techniques were used by the Romans but experienced a rebirth during the Crusades.

Several Baseball Prospectus authors have invented or improved upon widely relied upon sabermetric measures and techniques.

Several techniques have been performed for over a century, from the more invasive saphenous stripping, to less invasive procedures like ambulatory phlebectomy and CHIVA.

Several designer-makers established workshops in rural areas and revived old techniques.

Several mechanical techniques are used to dislodge sputum and encourage its expectoration.

Several techniques soon developed, such as the " stop trick ", wholly original to motion pictures.

Several important therapeutic techniques were pioneered at St. Elizabeths, and it served as a model for later institutions.

Several just-in-time compilation ( JIT ) techniques were pioneered and improved in Self research as they were required to allow a very high level object oriented language to perform at up to half the speed of optimized C. Much of the development of Self took place at Sun Microsystems, and the techniques they developed were later deployed for Java's HotSpot virtual machine.

Several other techniques are available depending on suitability and time constraints.

Several modern needlework designers have incorporated elements of Hardanger cut work into their embroidery designs and samplers, often combining them with other needlework techniques, stitches, speciality threads and other embellishments to great effect.

Several broad disciplines including Psychology, Human Factors and Cognitive Science subsume usability engineering, but the theoretical foundations of the field come from more specific domains: human perception and action ; human cognition ; behavioral research methodologies ; and, to a lesser extent, quantitative and statistical analysis techniques.

Several snapshotting techniques exists:

Several different recognition techniques are currently available.

Several years of her life have been spent in the homeland, and she had written to friends to alert them of our coming.

Several conventions have been held in recent months in hotels on a nonsegregated basis.

Several dentists and patients with special dental problems have experimented with the device.

Several germanium resistors have been thermally cycled from 300 to 4.2 Af and their resistances have been found to be reproducible within 1/3 millidegree when temperatures were derived from a vapor pressure thermometer whose tubing is jacketed through most of the liquid helium.

Several financial institutions, both banks and insurance companies, have been sounded out.

Several days after the companies had received the questionnaire, members of the research team contacted the presidents of eleven of these companies in person or by phone to discuss any ambiguities or difficulties the addressees might have experienced in completing the questionnaire.

Several signers affixed their names, it was learned, after being told that no tax increase would be possible without consent of the General Assembly and that a provision could be included in the charter to have the town take over the Johnston Sanitary District sewer system.

( Several times recently I have wondered whether shows were being staged for the sake of the script or just to entertain the audience with the spectacle of scenery being shifted right in front of their eyes.

Several of these double entries have been collected by Ben Bagley and Michael McWhinney, along with Rodgers and Hart songs that disappeared permanently en route to New York and others that reached Broadway but have not become part of the constantly heard Rodgers and Hart repertory, in a delightfully refreshing album, Rodgers And Hart Revisited ( Spruce Records, 505 Fifth Avenue, New York ).

Several robot cities have been planned for the country: the first will be built in 2009 at a cost of 500 billion won, of which 50 billion is direct government investment.

Several of the dialects have been influenced by contact with non-Germanic linguistic groups, such as the dialect of Carinthia, where in the past many speakers were bilingual with Slovene, and the dialect of Vienna, which has been influenced by immigration during the Austro-Hungarian period, particularly from what is today the Czech Republic.

Several AFI Alums have received both national and international recognition.

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 biographical programs have been made, such as the 2004 BBC television programme entitled Agatha Christie: A Life in Pictures, in which she is portrayed by Olivia Williams, Anna Massey, and Bonnie Wright.

Several additional candidates for written ASL have appeared in over the years, including Sutton SignWriting, Sign Script, ASL-phabet, and Si5s.

Several genres of fiction have been confused as alternate histories.

Several volcanoes on offshore islands have records of historic activity.

Several of Ambrose's works have recently been published in the bilingual Latin-German Fontes Christiani series ( currently edited by Brepols ).

Several religious brotherhoods which have sprung up in and around Milan at various times since the 14th century have been called Ambrosians.

Several saints and six popes have borne this name, including the only English pope, Adrian IV, and the only Dutch pope, Adrian VI.

Several alternatives to the human sacrifice have been presented in Greek mythology.

Several other princes have borne the name Alexander: