Research into several cultures has proven her position to be a mistaken one.

Its synthesis has not been demonstrated in cell-free systems, nor has its synthesis by systems with intact thyroid cells in vitro been unequivocally proven.

It is a desperate effort to prop up a sagging candidate who has proven he cannot answer any questions about New Jersey's problems.

Defining fixed and random effects has proven elusive, with competing

The research group, financed by toothpaste manufacturer Colgate-Palmolive, has designed a molecule called C16G2 that had been proven to kill S. mutans in Petri dishes.

The International Cooperative Ataxia Rating Scale ( ICARS ) is one of the most widely used and has been proven to have very high reliability and validity.

This book has proven highly influential, both in the years that would immediately follow and today.

She expressed reservations over the eventual winner David Cameron, feeling that he did not, like the other candidates, have a proven track record, and she was later a leading figure in parliamentary opposition to his A-List policy, which she has said is " an insult to women ".

The correctness of Varro's calculation has not been proven scientifically but is still used worldwide.

This has also been tested and proven by the MythBusters.

A green alga, Chlamydomonas reinhardtii, is a model organism that has proven important in advancing knowledge of cell biology.

According to United Nation's Food and Agriculture Organization the term bean should include only species of Phaseolus ; however, a strict consensus definition has proven difficult because in the past, several species such as Vigna ( angularis ( azuki bean ), mungo ( black gram ), radiata ( mung bean ), aconitifolia ( moth bean )) were classified as Phaseolus and later reclassified.

Overy states that blitzkrieg as a " coherent military and economic concept has proven a difficult strategy to defend in light of the evidence ".

American white oak has been a proven staple over red oak due to its tighter grain structure.

This widely observed trend is described by Moore's law, which has proven to be a fairly accurate predictor of the growth of CPU ( and other IC ) complexity.

It has also proven a popular site for transmissions by ham radio operators.

Regional political integration has not proven attractive to Costa Rica.

In Britain, canalside housing has also proven popular in recent years.

Even defining degrees of legal independence has proven to be a challenge since legislation typically provides only a framework within which the government and the central bank work out their relationship.

Justifying the State's use of force to coerce compliance with its laws has proven a consistent theoretical problem.

Cryptozoology ( from Greek κρυπτός, kryptos, " hidden " + zoology ; literally, " study of hidden animals ") refers to the search for animals whose existence has not been proven.

However, excessive cycling while standing can cause knee damage It used to be thought that cycling while standing was less energy efficient, but recent research has proven this not to be true.

Bell appealed both requirements, citing that the rules do not apply to cable companies and that they constituted proactive rate regulation by the CRTC, which goes against government official policy direction that the regulator only intervene in markets after a competitive problem has been proven.

* If the Venerable was not a martyr – all non-martyrs are " confessors " as they " confessed " or bore witness to their faith by how they lived their lives – it must be proven that a miracle has taken place by his or her intercession: that is, that God has shown a sign that the person is enjoying the Beatific Vision by God performing a miracle in response to the Blessed's prayers.

but the possibility of this effort is bound up with that development of historical thought which is the greatest achievement of our civilization in the last two centuries, and it is utterly impossible to people in whom this development has not taken place.

But the task is beyond me because I hold it impossible to compress in a sentence or two the complicated and prodigious contributions Sam Rayburn has made as an individual, as a legislator, as a statesman and as a leader and conciliator, to the majestic progress of this Nation.

However this has been a controversial subject with Masonic authors saying that it " is impossible to either substantiate or disprove " involvement in the Klan.

Black powder had many disadvantages as a propellant ; it has relatively low power, requiring large amounts of powder to fire projectiles, and created thick clouds of white smoke that would obscure the targets, betray the positions of guns and make aiming impossible.

Access to famous persons, too, became more and more restricted ; potential visitors would be forced through numerous different checks before being granted access to the official in question, and as communication became better and information technology more prevalent, it has become all but impossible for a would-be killer to get close enough to the personage at work or in private life to effect an attempt on his or her life, especially given the common use of metal and bomb detectors.

This protection explains why fossils preserved further from the Cathedral Formation are impossible to work with — tectonic squeezing of the beds has produced a vertical cleavage that fractures the rocks, so they split perpendicular to the fossils.

If the shuttlecock has dropped lower, then a smash is impossible and a full-length, high clear is difficult.

Bees all have two pairs of wings, the hind pair being the smaller of the two ; in a very few species, one sex or caste has relatively short wings that make flight difficult or impossible, but none are wingless.

River traffic on the Oubangui River is impossible from April to July, and conflict in the region has sometimes prevented shipments from moving between Kinshasa and Bangui.

In practice, it has been abolished by various Talmudic decisions, making the situations in which a death sentence could be passed effectively impossible and hypothetical.

Marker has said that Vertigo is the only film " capable of portraying impossible memory, insane memory.

As UCLA law professor Stephen Yeazell has pointed out, the most likely reason is that the abysmally poor transportation, communications, and administrative apparatus of medieval times made it impossible for the English sovereign to directly manage the entire country in terms of individuals ; it was easier to structure society by imposing obligations upon groups which were enforced by the sporadic use of force.

Although the Hebrew Bible has many references to capital punishment, the Jewish sages used their authority to make it nearly impossible for a Jewish court to impose a death sentence.

Prosecution for an already judged crime is impossible even though new incriminating evidence has been found.

The advent of digital technology in photography has provided additional means of controlling the extent of image sharpness ; some methods allow extended DOF that would be impossible with traditional techniques, and some allow the DOF to be determined after the image is made.

It has been impossible to prove that these archeologic remains date back to the time when the stones were set in place.

Because it demonstrates the fundamental limitation of the observer to predict experimental results, Richard Feynman called it " a phenomenon which is impossible ... to explain in any classical way, and which has in it the heart of quantum mechanics.

Rand's student, Leonard Peikoff has argued that the identification of one's interests itself is impossible absent the use of principles, and that self-interest cannot be consistently pursued absent a consistent adherence to certain ethical principles.

Another advantage of FIR filters is that their impulse response can be made symmetric, which implies a response in the frequency domain which has zero phase at all frequencies ( not considering a finite delay ), which is absolutely impossible with any IIR filter.

Although enthalpy is commonly used in engineering and science, it is impossible to measure directly, as enthalpy has no datum ( reference point ).

Whichever axis she uses, she has a 50 % probability of obtaining "+" and 50 % probability of obtaining "−", completely at random ; according to quantum mechanics, it is fundamentally impossible for her to influence what result she gets.

However, it has proven extremely difficult ( perhaps impossible ) to replicate such extraordinary experiences under controlled scientific conditions.

* perfect tackle – when a player lays a tackle on an opponent that has had prior opportunity to dispose of the ball and in the process makes it impossible for their opponent to dispose of the ball.

Because no set definition of what constitutes a lake and no procedures for counting the number of lakes exist, it has been impossible to ascertain exactly how many lakes the region has.