The precise mechanism for organification of iodine in the thyroid is not as yet completely understood.

It is not clear whether this system bears any resemblance to the in vivo iodinating mechanism, and a system generating peroxide has not been identified in thyroid tissue.

Since the circulating thyroid hormones are the amino acids thyroxine and tri-iodothyronine ( cf. Section C ), it is clear that some mechanism must exist in the thyroid gland for their release from proteins before secretion.

It is believed that drug therapy and electroshock involve the former and psychotherapy the latter mechanism.

there is no mechanism for keeping the volumes up to date.

Also, it can be readily seen that the cutting and peeling types of failure show a steady state response, while the cracking mechanism is of a dynamic nature.

The basic difference between the continuous cutting mechanism and that of the chipping mechanism is that instead of shear occurring in the coating ahead of the knife continuously without fracture, rupture intermittently occurs along the shear plane.

If a substitute mechanism is needed for the control of a fictitious impersonal market, quite obviously some method must be devised for representing the public interest.

Sorghum is believed to have the same tolerance mechanism.

They have not been expelled or suspended, since there is no mechanism in this voluntary association to suspend or expel an independent province of the Communion.

This might indicate that anxiety is a protective mechanism designed to prevent the organism from engaging in potentially harmful behaviors.

When a molten metal is mixed with another substance, there are two mechanisms that can cause an alloy to form, called atom exchange and the interstitial mechanism.

With the interstitial mechanism, one atom is usually much smaller than the other, so cannot successfully replace an atom in the crystals of the base metal.

While the mechanism is not fully understood, it is likely to involve the production of electron – positron pairs, as ordinary matter gains tremendous energy while falling into a stellar remnant .< ref >

The merger is the mechanism by which the players compete.

Quantum nonlocality is often proposed as a mechanism for superluminal communication.

Furthermore, there is no proposed mechanism of action by which the positions and motions of stars and planets could affect people and events on Earth that does not contradict well understood, basic aspects of biology and physics.

The exact mechanism of action of paracetamol / acetaminophen is uncertain, but it appears to be acting centrally rather than peripherally ( in the brain rather than in nerve endings ).

The exact mechanism of carbamazepine, gabapentin and pregabalin is similarly unclear, but these anticonvulsants are used to treat neuropathic pain with differing degrees of success.

Using this binding mechanism, an antibody can tag a microbe or an infected cell for attack by other parts of the immune system, or can neutralize its target directly ( for example, by blocking a part of a microbe that is essential for its invasion and survival ).

The proposed mechanism of chronic nicotine causing desensitisation of nicotinic receptors, thereby leading to an antidepressant effect, is consistent with the theory first proposed over 30 years ago and subsequent research that confirmed excessive acetylcholine activity in the brain leads to depressive symptoms.

Many pathways and signals lead to apoptosis, but there is only one mechanism that actually causes the death of a cell.

ATM traffic contracts form part of the mechanism by which " quality of service " ( QoS ) is ensured.

Spalling provides a potential mechanism whereby material may be ejected into inter-planetary space largely undamaged, and whereby small volumes of the impactor may be preserved undamaged even in large impacts.

On the other hand the Bohm interpretation of quantum mechanics keeps counter-factual definiteness while introducing a conjectured non-local mechanism in form of the ' quantum potential ', defined as one of the terms of the Schrödinger equation.

Ca < sup > 2 +</ sup > influx to the mitochondrial matrix has recently been implicated as a mechanism to regulate respiratory bioenergetics by allowing the electrochemical potential across the membrane to transiently " pulse " from ΔΨ-dominated to pH-dominated, facilitating a reduction of oxidative stress.

Another potential mechanism is premature dissociation of the peptidyl-tRNA from the ribosome.

The potential mechanism was hypothesized to be related to changes in pH, potassium, and calcium level in selected cardiac cells.

A working mechanism of a resonant tunneling diode device, based on the phenomenon of quantum tunneling through potential barriers

Alternative theories include that the stripes coincide with fat patterning beneath the skin, serving as a thermo-regulatory mechanism for the zebra, or that wounds sustained disrupt the striping pattern to clearly indicate the fitness of the animal to potential mates.

In the process he introduced the magnetic vector potential which was later shown to be equivalent to the underlying mechanism proposed by Faraday.

This mechanism of water flow works because of water potential ( water flows from high to low potential ), and the rules of simple diffusion.

Capacity expansion is also a potential mechanism to deal with traffic congestion, but is often undesirable ( particularly in urban areas ) and sometimes has questionable benefits ( see induced demand ).

A 2010 study suggests Interleukin-2, a neuromodulator, as the potential mechanism of SIDS.

Any difference between cellular and viral enzyme handling of ribavirin-containing mRNA transcripts is a potential mechanism of differential inhibition of ribavirin to translation of mRNAs from viruses ( including DNA viruses ).

This is the mechanism that prevents an action potential from traveling back the way it just came.

However, the main excitable cell is the neuron, which also has the simplest mechanism for the action potential.

The coasian solution, named for the economist Ronald Coase and unrelated to his Coase theorem, proposes a mechanism by which potential beneficiaries of a public good band together and pool their resources based on their willingness to pay to create the public good.

Not only the mechanism of the sodium-potassium pump alone is responsible for the generation of the resting membrane potential.

Overall, in considering the potential motives for gendered violence against women in Juarez, it is important to recognize that femicide is a mechanism of domination, control, oppression, and power over women.

Such snares are termed “ flypaper traps ,” however the trapping mechanism of sundews is often erroneously described as “ passive .” In fact, sundew traps are quite active and sensitive, and the disturbance of one or a few trichomes quickly triggers an action potential that stimulates the rapid movement of other trichomes toward the prey.

The simplicity of the mechanism and its potential for attractive after-dinner presentation have led to a variety of more-or-less aesthetic designs.

The underlying mechanism is the coupling of the electromagnetic potential with the complex phase of a charged particle's wavefunction, and the Aharonov – Bohm effect is accordingly illustrated by interference experiments.

A potential mechanism is that melatonin promotes the recruitment of brown adipose tissue ( BAT ) as well as enhances its activity.

* The shmoo has been suggested as a hypothetical example of the potential falsifiability of natural selection as a key driving mechanism of biological evolution.

They are a defense mechanism enacted by the Earth to purge the existence of humanity, and the B-cells that exist in the " Sleepers " could become a potential threat to humanity as well.