Phylloquinone ( also known as vitamin K < sub > 1 </ sub >) invariably contains in its side chain four isoprenoid residues, one of which is unsaturated.

Phylloquinone is also known as Vitamin K < sub > 1 </ sub > as it is used by animals to help form certain proteins, which are involved in blood coagulation, bone formation, and other processes.

* K < sub > 1 </ sub >, A common name for the vitamin Phylloquinone

Phylloquinone has a Phytane | phytyl side-chain.

The acid dissociation constant K < sub > a </ sub > is generally used in the context of acid-base reactions.

The numerical value of K < sub > a </ sub > is equal to the concentration of the products divided by the concentration of the reactants, where the reactant is the acid ( HA ) and the products are the conjugate base and H < sup >+</ sup >.

The stronger of two acids will have a higher K < sub > a </ sub > than the weaker acid ; the ratio of hydrogen ions to acid will be higher for the stronger acid as the stronger acid has a greater tendency to lose its proton.

Because the range of possible values for K < sub > a </ sub > spans many orders of magnitude, a more manageable constant, pK < sub > a </ sub > is more frequently used, where pK < sub > a </ sub >

If K is a number field, its ring of integers is the subring of algebraic integers in K, and is frequently denoted as O < sub > K </ sub >.

Theorem: If K < sub > 1 </ sub > and K < sub > 2 </ sub > are the complexity functions relative to description languages L < sub > 1 </ sub > and L < sub > 2 </ sub >, then there is a constant c – which depends only on the languages L < sub > 1 </ sub > and L < sub > 2 </ sub > chosen – such that

# The length of P which by definition is K < sub > 2 </ sub >( s ).

An algebraic closure K < sup > alg </ sup > of K contains a unique separable extension K < sup > sep </ sup > of K containing all ( algebraic ) separable extensions of K within K < sup > alg </ sup >.

Table 1,, p. 394, shows a comparison of K factor ratings of a number of commercial insulating materials in common use, including two different types of rigid urethane foam.

This has cooled it down to approximately 1 K, as deduced by astronomical observation, which is the lowest natural temperature ever recorded.

* J. Barnes, S. Bobzien, K. Flannery, K. Ierodiakonou, 1991, Alexander of Aphrodisias: On Aristotle Prior Analytics 1. 1-7.

This subextension is called a separable closure of K. Since a separable extension of a separable extension is again separable, there are no finite separable extensions of K < sup > sep </ sup >, of degree > 1.

Other significant properties are high specific heat ( 1925 J · kg < sup >− 1 </ sup >· K < sup >− 1 </ sup >) and thermal conductivity ( 216 W · m < sup >− 1 </ sup >· K < sup >− 1 </ sup >), which make beryllium the metal with the best heat dissipation characteristics per unit weight.

In combination with the relatively low coefficient of linear thermal expansion ( 11. 4 × 10 < sup >− 6 </ sup > K < sup >− 1 </ sup >), these characteristics result in a unique stability under conditions of thermal loading.

Here K denotes the field of real numbers or complex numbers, I is a closed and bounded interval b and p, q are real numbers with 1 < p, q < ∞ so that

K < sub > α </ sub >, then C < sub > α </ sub > is − 1.

The standard state, or reference state, of an element is defined as its thermodynamically most stable state at 1 bar at a given temperature ( typically at 298. 15 K ).

Pollen samples recovered near a fossilized hadrosaur femur recovered in the Ojo Alamo Sandstone at the San Juan River indicate that the animal lived during the Tertiary, approximately 64. 5 Ma ( about 1 million years after the K – Pg extinction event ).

Church, Ministry and Sacraments in the New Testament Paternoster Press: 1993, p. 92f </ ref > Moving on to Ignatius of Antioch, Barrett states that here we find a sharp distinction between ' presbyter ' and ' bishop ': the latter now stands out as " an isolated figure " who is to be obeyed and without whom it is not lawful to baptise or hold a love-feast .< Barrett, C. K.

Between 70 K and room temperature, berkelium behaves as a Curie – Weiss paramagnetic material with an effective magnetic moment of 9. 69 Bohr magnetons ( µ < sub > B </ sub >) and a Curie temperature of 101 K. This magnetic moment is almost equal to the theoretical value of 9. 72 µ < sub > B </ sub > calculated within the simple atomic L-S coupling model.

The equilibrium is determined by the acid and base dissociation constants ( K < sub > a </ sub > and K < sub > b </ sub >) of the involved substances.

Conversely, if the data are sparse — that is, if only K out of N Fourier coefficients are nonzero — then the complexity can be reduced to O ( K log N log ( N / K )), and this has been demonstrated to lead to practical speedups compared to an ordinary FFT for N / K > 32 in a large-N example ( N = 2 < sup > 22 </ sup >) using a probabilistic approximate algorithm ( which estimates the largest K coefficients to several decimal places ).

The second, more radical, adaptation involves the selective influx of potassium ( K < sup >+</ sup >) ions into the cytoplasm.

From about 1993, the highest temperature superconductor was a ceramic material consisting of thallium, mercury, copper, barium, calcium and oxygen ( HgBa < sub > 2 </ sub > Ca < sub > 2 </ sub > Cu < sub > 3 </ sub > O < sub > 8 + δ </ sub >) with T < sub > c </ sub > = 138 K .< ref >

Selenium trioxide is produced in the laboratory by the reaction of anhydrous potassium selenate ( K < sub > 2 </ sub > SeO < sub > 4 </ sub >) and sulfur trioxide ( SO < sub > 3 </ sub >).

The most common oxidation state of silver is + 1 ( for example, silver nitrate, AgNO < sub > 3 </ sub >); the less common + 2 compounds ( for example, silver ( II ) fluoride, AgF < sub > 2 </ sub >), and the even less common + 3 ( for example, potassium tetrafluoroargentate, KAgF < sub > 4 </ sub >) and even + 4 compounds ( for example, potassium hexafluoroargentate, K < sub > 2 </ sub > AgF < sub > 6 </ sub >) are also known.

In Russia, State Standard GOST 2939-63 sets the following standard conditions: 25 ° C ( 298. 15 K ), 760 mmHg ( 101325 N / m < sup > 2 </ sup >) and zero humidity.

Short chain scorpion toxins constitute the largest group of potassium ( K < sup >+</ sup >) channel blocking peptides ; an important physiological role of the KCNA3 channel, also known as K < sub > V </ sub > 1. 3, is to help maintain large electrical gradients for the sustained transport of ions such as Ca < sup > 2 +</ sup > that controls T lymphocyte ( T cell ) proliferation.

However, the + 1 state, which is far more prominent in thallium than the elements above it, recalls the chemistry of alkali metals, and thallium ( I ) ions are found geologically mostly in potassium-based ores, and ( when ingested ) are handled in many ways like potassium ions ( K < sup >+</ sup >) by ion pumps in living cells.

Proteins found in the tonoplast ( aquaporins ) control the flow of water into and out of the vacuole through active transport, pumping potassium ( K < sup >+</ sup >) ions into and out of the vacuolar interior.

A sample of Phytomenadione ( vitamin K < sub > 1 </ sub >) for injection

It has been reported that MK7 may be converted from phylloquinone ( K < sub > 1 </ sub >) in the colon by E-coli bacteria.

Vitamin K < sub > 2 </ sub > ( MK4, but not MK7 or vitamin K < sub > 1 </ sub >) has also been shown to prevent bone loss and / or fractures in the following circumstances:

Vitamin K < sub > 2 </ sub > ( menaquinone ).

Vitamin K < sub > 2 </ sub > ( menaquinone ) includes several subtypes ; two subtypes most studied are menaquinone-4 ( menatetrenone, MK4 ) and menaquinone-7 ( MK7 ).

Although allergic reaction from supplementation is possible, no known toxicity is associated with high doses of the phylloquinone ( vitamin K < sub > 1 </ sub >) or menaquinone ( vitamin K < sub > 2 </ sub >) forms of vitamin K, so no tolerable upper intake level ( UL ) has been set.

A 1969 report authored by K. Diane Courtney and others found 2, 4, 5-T could cause birth defects and stillbirths in mice.

For a time, memory capacities were often expressed in K, even when M could have been used: The IBM System / 370 Model 158 brochure ( 1972 ) had the following: " Real storage capacity is available in 512K increments ranging from 512K to 2, 048K bytes.

Blade Runner 2: The Edge of Human ( 1995 ) is a novel by K. W. Jeter, and a continuation of both the film Blade Runner, and the novel upon which it was based, Philip K. Dick's Do Androids Dream of Electric Sheep?

Calcium-40 is created in extremely large and hot ( over 2. 5 × 10 < sup > 9 </ sup > K ) stars, as part of the silicon-burning process in which alpha particles are added to silicon atoms.

More generally, compact sets can be separated by open sets: if K < sub > 1 </ sub > and K < sub > 2 </ sub > are compact and disjoint, there exist disjoint open sets U < sub > 1 </ sub > and U < sub > 2 </ sub > such that and.

Until about 2000, users of Unix desktops regarded CDE as the de facto standard, but at that time, other desktop environments such as GNOME and K Desktop Environment 2 were quickly becoming mature, and became almost universal on the Linux platform, which already had a larger user base than most commercial Unixes in total.

This will yield a polytrope of index 3, which will have a total mass, M < sub > limit </ sub > say, depending only on < var > K </ var >< sub > 2 </ sub >.

Color temperatures over are called cool colors ( blueish white ), while lower color temperatures ( 2, 700 – 3, 000 K ) are called warm colors ( yellowish white through red ).

The CMBR has a thermal black body spectrum at a temperature of 2. 725 K, which peaks at the microwave range frequency of 160. 2 GHz, corresponding to a 1. 873 mm wavelength.

This results in constitutive cAMP production, which in turn leads to secretion of H < sub > 2 </ sub > O, Na < sup >+</ sup >, K < sup >+</ sup >, Cl < sup >−</ sup >, and HCO < sub > 3 </ sub >< sup >−</ sup > into the lumen of the small intestine and rapid dehydration.

The campaign strategy, dubbed " K < sub > 1 </ sub > C < sub > 2 </ sub >", was to focus on attacking the Truman and Roosevelt administrations on three issues: Korea, Communism and corruption.

One reason for the popularity of the dissociation constant in biochemistry and pharmacology is that in the frequently encountered case where x = y = 1, K < sub > d </ sub > has a simple physical interpretation: when = K < sub > d </ sub >, = or equivalently /(+)= 1 / 2.