Several studies have shown an increased rate of cancer mortality for workers exposed to 2, 4, 5-T.

Several studies have tried to reconstruct the phylogeny of the genus.

Several studies published since 1990 indicate that cooking meat at high temperature creates heterocyclic amines ( HCAs ), which are thought to increase cancer risk in humans.

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

Several in vitro studies indicated that high concentrations of chromium ( III ) in the cell can lead to DNA damage.

Several in-depth studies of salamander genera in fossil beds in Montana show that six of seven genera were unchanged after the event.

Several of these follow-up studies, which involved viewing in group settings, reported some limited success.

Several studies have specifically addressed Duesberg's claim that recreational drug abuse or sexual promiscuity were responsible for the manifestations of AIDS.

Several clinical and experimental data have implicated the failure of blood – brain barrier ( BBB ) function in triggering chronic or acute seizures, some studies implicate the interactions between a common blood protein — albumin and astrocytes.

Several other studies have also found lasting cognitive gains.

Several demographic studies, including those by social work researcher Athena Kolbe have shed light on the current status of urban residents.

Several studies have suggested that hedge funds are sufficiently diversifying to merit inclusion in investor portfolios, but this is disputed for example by Mark Kritzman who performed a mean-variance optimization calculation on an opportunity set that consisted of a stock index fund, a bond index fund, and ten hypothetical hedge funds.

Several studies have discovered that subjects who received no jury instructions comprehended the law better than subjects who received pattern instructions.

Several researchers include the island of Cyprus in Levantine studies, including the Council for British Research in the Levant, the UCLA Near Eastern Languages and Cultures department, and the UCL Institute of Archaeology, the last of which has dated the connection between Cyprus and mainland Levant to the early Iron Age.

Several clinical studies have shown that combined ECPs containing ethinyl estradiol and levonorgestrel can inhibit or delay ovulation .< sup > 107 – 110 </ sup ></ ref >

Several regression studies with David Meiselman during the 1960s suggested the primacy of the money supply over investment and government spending in determining consumption and output.

Several studies place the nucleariids as a sister group to the fungi.

Several epidemiological studies from different countries have reported widely varying prevalence rates for chronic pain, ranging from 12-80 % of the population.

Several detailed studies using various methods to measure growth curves among known specimens have demonstrated that there is actually only one valid Pterodactylus species, P. antiquus.

Several studies ( Alfredo Torero or Rodolfo Cerrón Palomino ) show that the oldest form of Quechua appeared in Cajamarquilla, Lima.

Several police organizations condemned this study and suggested more studies like this would make them hesitant to pull over visible minorities.

Several sources claim that during his studies he was more interested in religion than joining the military.

Several neuroimaging studies have emerged in order to identify areas associated with stuttering.

Several studies show that between 50 % and 73 % of women who have used this type of condoms during intercourse find them as or more comfortable than male condoms.

Several official design studies were done, but most were basically smaller versions of the existing Shuttle concept.

Several companies also saw possibilities in using the technique for extruding or molding vinyl products with a slight cellular core that would reduce costs yet would not affect physical properties of the end product to any great extent.

Several inventions followed using rear-wheel drive, the best known being the rod-driven velocipede by Scotsman Thomas McCall in 1869.

Several other sports may have taken place here, such as lawn bowls, croquet and possibly a version of the Aztec game called ' tlachtli ' ( scoring a ball through a hoop using your hips ).

The first computer using a multiprogramming system was the British Leo III owned by J. Lyons and Co .. Several different programs in batch were loaded in the computer memory, and the first one began to run.

Several languages that are not written with the Roman alphabet are transliterated, or romanized, using diacritics.

Several of these methods may be directly extended to give definitions of e < sup > z </ sup > for complex values of z simply by substituting z in place of x and using the complex algebraic operations.

Several versions are available for the UNIX-based Mac OS X, including a text-mode version using Fink or MacPorts and two graphical versions, IrssiX, and MacIrssi.

Several mathematicians, including Maclaurin and d ' Alembert, attempted to prove the soundness of using limits, but it would be 150 years later, through the work of Augustin Louis Cauchy and Karl Weierstrass, where a means was finally found to avoid mere " notions " of infinitely small quantities, that the foundations of differential and integral calculus were made firm.

Several companies produce joysticks for industrial applications using hall effect technology.

Several kicks may be called a scissor kick, involving swinging out the legs to kick multiple targets or using the legs to take down an opponent.

Several species of animals have proven able to acquire forms of communication through social learning, such as the Bonobo Kanzi who learned to express himself using a set of symbolic lexigrams.

Several optional extensions are also available, including MIPS-3D which is a simple set of floating-point SIMD instructions dedicated to common 3D tasks, MDMX ( MaDMaX ) which is a more extensive integer SIMD instruction set using the 64-bit floating-point registers, MIPS16e which adds compression to the instruction stream to make programs take up less room, and MIPS MT, which adds multithreading capability.

Several companies did succeed in making 68000-based Unix workstations with virtual memory that worked by using two 68000 chips running in parallel on different phased clocks.

Several operating systems have since been constructed using this method, known as co-location, among them Lites, MkLinux, OSF / 1 and NeXTSTEP / OPENSTEP / Mac OS X.

Several media entities refrain from using the term “ ultra Orthodox ”, including the Religion Newswriters Association ; JTA, the global Jewish news service ; and the Star-Ledger, New Jersey ’ s largest daily newspaper, according the New Jersey Press Association.

Several Universities post similar maps made using Scotese's software.

Several methods to protect user's privacy when using location based services have been proposed, including the use of anonymizing servers, blurring of information e. a.

Several very popular series of short films were made using stop-motion animation, including The Clangers, Noggin the Nog, and Ivor the Engine.

Several web browsers, including Internet Explorer ( using the MSXML engine ), Opera ( native engine ) and Safari, all support transformation of XML to HTML ( or other languages ) through XSLT.

Several of the trials were intended to established tactical methods of using submarines in warfare.

Several studies using cultured cells and laboratory rodents suggest the possibility of leukemogenic, genetic, reproductive, and neurological effects from chronic exposure.

Several of the obvious technical difficulties with the Bussard Ramjet can be overcome by prelaunching fuel along the spacecraft's trajectory using something like a magnetic rail-gun.

Several methods for heating an exhaust fluid using the gamma rays produced by positron annihilation have been proposed.

Several characteristics may be determined using the same test fiber.