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.

Antibacterial antibiotics are commonly classified based on their mechanism of action, chemical structure, or spectrum of activity.

Although the mechanism differs from country to country, most use a similar mechanism based on a central bank's ability to create as much fiat money as required.

Ion exchange chromatography ( usually referred to as ion chromatography ) uses an ion exchange mechanism to separate analytes based on their respective charges.

Economic planning is a mechanism for resource allocation of inputs and decision-making based on direct allocation, in contrast with the market mechanism, which is based on indirect allocation.

The free market solution is the price mechanism, wherein people individually have the ability to decide how a good or service should be distributed based on their willingness to give money for it.

Tax-credit scholarships which are in most part disbursed to current private school students or to families which made substantial donations to the scholarship fund, rather than to low-income students attempting to escape from failing schools, amount to nothing more than a mechanism to use public funds in the form of foregone taxes to support private, often religiously based, private schools.

His inventions were based on the printing mechanism from Hughes ' instrument, a distributor invented by Bernard Meyer during 1871, and the five-unit code devised by Carl Friedrich Gauss and Wilhelm Weber.

The access control mechanism a system offers will be based upon one of three approaches to access control or it may be derived from a combination of the three approaches.

Judith Anderson said his work was based on statistically flawed evidence, John Archer and others said that Rushton failed to understand and misapplied the theory of kin selection, Judith Economos said he was speculative and failed to define the concept of altruistic behavior in a way that it can become manifest and failed to show any plausible mechanism by which members of a species can detect the " altruism gene " in other members of the species, and Steven Gangestad criticized the theory for not being compelling in terms of its attractiveness as an explanatory model, C. R.

Lebanon gained independence in 1943, and established a unique political system, known as confessionalism, a power-sharing mechanism based on religious communities – Bechara El Khoury who became independent Lebanon's first President and Riad El-Solh, who became Lebanon's first prime minister, are considered the founders of the modern Republic of Lebanon and are national heroes for having led the country's independence.

Multiprotocol Label Switching ( MPLS ) is a mechanism in high-performance telecommunications networks that directs data from one network node to the next based on short path labels rather than long network addresses, avoiding complex lookups in a routing table.

Some of Mach's more esoteric features were also based on this same IPC mechanism.

NSAIDs can be classified based on their chemical structure or mechanism of action.

Their transport may be based on a so-called " piggy-back " mechanism: such proteins associate with PTS1-possessing matrix proteins and are translocated into the peroxisomal matrix together with them.

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

The Pancor Jackhammer is a combat shotgun based on a similar mechanism to an automatic revolver.

A self-managed, decentralised economy is based upon autonomous self-regulating economic units and a decentralised mechanism of resource allocation and decision-making.

This hypothesis is supported by a specific mechanism called " shock wave acceleration " based on Enrico Fermi's ideas, which is still under development.

An automatic exposure unit from an 8 mm video format | 8 mm movie camera, based on a galvanometer mechanism ( center ) and a Cadmium sulfide | CdS photoresistor in the opening at left.

These MEMS-tunable vertical-cavity SOAs utilize a microelectromechanical systems ( MEMS ) based tuning mechanism for wide and continuous tuning of the peak gain wavelength of the amplifier.

Some active subwoofers use a servo feedback mechanism based on cone movement which modifies the signal sent to the voice coil.