There are two kinds of microsporogenesis: successive and simultaneous ( although intermediates exist ).

It seems that when the Asparagales first diverged they developed simultaneous microsporogenesis, which the ' lower ' Asparagale families retain.

All of the species except the genera placed in Nartheciaceae express simultaneous microsporogenesis.

The plants in both genera are found in high-elevation habitats and have bracteate racemes, pedicellate flowers, six persistent tepals, septal nectaries, three nearly distinct carpels, simultaneous microsporogenesis, monosulcate pollen, and follicular fruits.

Asphodeloideae is distinguished by a general presence of anthraquinones, simultaneous microsporogenesis, atypical ovules morphology, and the presence of an aril.

" The Court allowed the guilty plea only with a simultaneous protestation of innocence as there was enough evidence to show that the prosecution had a strong case for a conviction, and the defendant was entering such a plea to avoid this possible sentencing.

Gregory and Benedict ignored this decision however, so that there were now three simultaneous claimants to the Papacy.

In addition, there may be a simultaneous narrowing at another place of articulation, such as palatalisation or pharyngealisation.

Then, for any given sequence of integers a < sub > 1 </ sub >, a < sub > 2 </ sub >, …, a < sub > k </ sub >, there exists an integer x solving the following system of simultaneous congruences.

However, the difference from the electromagnetic aether of Maxwell and Lorentz lies in the fact, that " because it was no longer possible to speak, in any absolute sense, of simultaneous states at different locations in the aether, the aether became, as it were, four dimensional, since there was no objective way of ordering its states by time alone .".

The intersection of the IS and LM curves is the " general equilibrium " where there is simultaneous equilibrium in both markets.

With appropriate operating system support, there can be increased read performance, and only a minimal write performance reduction ; implementing RAID 1 with a separate controller for each drive in order to perform simultaneous reads ( and writes ) is sometimes called " multiplexing " ( or " duplexing " when there are only two drives ).

Later in the evening of the Carnival, there is the simultaneous firing of large fireworks ( known as squibs ) in the street outside the town hall, known as " squibbing ".

They show that if families of wreath products of Abelian groups with symmetric groups realise families of subset triples with a simultaneous version of the TPP, then there are matrix multiplication algorithms with essentially quadratic complexity.

An entirely separate and simultaneous US feed was provided for cable viewers by MTV, whose broadcast was presented in stereo, and accessible as such for those with special receivers of the time, as there were very few stereo sets in the summer of 1985, and few television stations were able to broadcast in stereo.

On 1 August 1917, Benedict issued a seven point peace plan stating that: ( 1 ) " the moral force of right ... be substituted for the material force of arms ," ( 2 ) there must be " simultaneous and reciprocal diminution of armaments ," ( 3 ) a mechanism for " international arbitration " must be established ," ( 4 ) " true liberty and common rights over the sea " should exist, ( 5 ) there should be a " renunciation of war indemnities ," ( 6 ) occupied territories should be evacuated, and ( 7 ) there should be " an examination ... of rival claims.

Therefore, in cases of pneumothorax, the other lung will still function normally unless there is a tension pneumothorax or simultaneous bilateral pneumothorax, which may collapse the contralateral parenchyma, blood vessels and bronchi.

Apparently, however, there is no decrease in iron absorption when instant coffee is consumed 1 hour before a meal, but the same degree of inhibition as with simultaneous ingestion occurs when instant coffee is taken 1 hour after a meal.

To transmit 4 individual audio signals in a compatible manner, there must be four simultaneous linear equations to reproduce the original 4 audio signals at the output.

There are 3 distinct APS disease entities: primary ( the absence of any comorbidity ), secondary ( when there is a pre-existing autoimmune condition, most frequently systemic lupus erythematosus, SLE ), and catastrophic ( when there is simultaneous multi-organ failure with small vessel occlusion ).

For a period there were thus two simultaneous land speed records, the 1947 Railton Mobil Special record remaining as the FIA four-wheel Class A record, which from July 1964 went to Campbell's Bluebird.

Free packets would be " loaded " with data by a machine wishing to send, marked as received by the destination machine, and " unloaded " on return to the sender ; thus in principle there could be as many simultaneous senders as packets.

The institutions ' simultaneous revocations of the anathemas of 1054 were a gesture toward " restoring mutual trust " and a recognition that there is " a vast area of common ground that the two sides share.

Given a set S of matrices, each of which is diagonalizable, and any two of which commute, it is always possible to simultaneously diagonalize all of the elements of S. Equivalently, for any set S of mutually commuting semisimple linear transformations of a finite-dimensional vector space V there exists a basis of V consisting of simultaneous eigenvectors of all elements of S. Each of these common eigenvectors v ∈ V, defines a linear functional on the subalgebra U of End ( V ) generated by the set of endomorphisms S ; this functional is defined as the map which associates to each element of U its eigenvalue on the eigenvector v. This " generalized eigenvalue " is a prototype for the notion of a weight.

The report has found that each year the number of Americans who pay nothing in federal personal income taxes continues to increase, while there is a simultaneous increase in the number who rely on government services.

) This is the same system as was used in the field-sequential color-TV system which preceded the present simultaneous system.

It is distinctly possible, therefore, that simultaneous pressures in all three vessels would have rendered the shunts inoperable and hence, uninjectable.

James, he remarks in a letter to a friend, `` is attempting the impossible namely, to produce upon the reader, as a painting produces upon the gazer, a number of superimposed, simultaneous impressions.

Elaborate arborization is important for it allows for the simultaneous transmission of messages to a large number of target neurons within a single region of the brain.

As Th1 response is required for an effective immune response to tuberculous infection, concurrent infection with various parasites produces a simultaneous Th2 response, which blunts the effect of BCG.

Another type of MT is known as simultaneous multithreading, where instructions of multiple threads are executed in parallel within one CPU clock cycle.

The original form of the theorem, contained in a third-century AD book The Mathematical Classic of Sun Zi ( 孫子算經 ) by Chinese mathematician Sun Tzu and later generalized with a complete solution called Da yan shu ( 大衍术 ) in a 1247 book by Qin Jiushao, the Shushu Jiuzhang ( 數書九章 Mathematical Treatise in Nine Sections ) is a statement about simultaneous congruences ( see modular arithmetic ).

The masking threshold is calculated using the absolute threshold of hearing and the principles of simultaneous masking — the phenomenon wherein a signal is masked by another signal separated by frequency, and, in some cases, temporal masking — where a signal is masked by another signal separated by time.

Comorbidity is the simultaneous presence of two or more medical conditions, such as schizophrenia and substance abuse.

The latency period is the time between infection and the ability of the disease to spread to another person, which may precede, follow, or be simultaneous with the appearance of symptoms.

The central idea of Diophantine geometry is that of a rational point, namely a solution to a polynomial equation or system of simultaneous equations, which is a vector in a prescribed field K, when K is not algebraically closed.

It is, in fact, possible to have multiple simultaneous de jure legalities that are not de facto.

In addition, a crucial element in polylogic epistolary novels like Clarissa, and Dangerous Liaisons is the dramatic device of ' discrepant awareness ': the simultaneous but separate correspondences of the heroines and the villains creating dramatic tension.

A DTM-capable mobile may use simultaneous voice and packet data, with the network coordinating to ensure that it is not required to transmit on two different frequencies at the same time.

Furthermore, available fingerstick glucose meters are only warranted to be accurate to within 15 % of a simultaneous laboratory value under optimal conditions, and home use in the investigation of hypoglycemia is fraught with misleading low numbers.

In more modern music, the fifth finger is used very rarely, for example in simultaneous cluster chords, such as in Daniel Kessner's Sonatina.

Although the resulting energy eigenfunctions ( the orbitals ) are not necessarily isotropic themselves, their dependence on the angular coordinates follows completely generally from this isotropy of the underlying potential: the eigenstates of the Hamiltonian ( that is, the energy eigenstates ) can be chosen as simultaneous eigenstates of the angular momentum operator.

Under Galilean transformations, the time t < sub > 2 </ sub > − t < sub > 1 </ sub > between two events is the same for all inertial reference frames and the distance between two simultaneous events ( or, equivalently, the length of any object, | r < sub > 2 </ sub > − r < sub > 1 </ sub >|) is also the same.

Integrated Services Digital Network ( ISDN ) is a set of communications standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network.