Some choose to interpret them as three stages in a woman's life, separated by menarche and menopause.

Thus, estradiol is the most important estrogen in non-pregnant females who are between the menarche and menopause stages of life.

Some choose to interpret them as three stages in a woman's life, separated by menarche and menopause.

The Marxist view of history is that history is governed by universal laws and that according to these laws, a society moves through a series of stages with the transition between stages being driven by class struggle.

The forest area change may follow a pattern suggested by the forest transition ( FT ) theory, whereby at early stages in its development a country is characterized by high forest cover and low deforestation rates ( HFLD countries ).

FT depicts a broad trend, and an extrapolation of historical rates therefore tends to underestimate future BAU deforestation for counties at the early stages in the transition ( HFLD ), while it tends to overestimate BAU deforestation for countries at the later stages ( LFHD and LFLD ).

She recorded that their adolescence was not in fact a time of " storm and stress " as Erikson's stages of development suggest, but that the sexual freedom experienced by the adolescents actually permitted them an easy transition from childhood to adulthood.

In the Vietnam War, firing the gun often adversely affected the delicate electronics, which were at the early stages of the transition to solid state devices, so the missile and its guidance system was omitted from vehicles deployed to Vietnam.

Woodland may form a transition to shrubland under drier conditions or during early stages of primary or secondary succession.

In January 1965, the French thought the initial three-stage rocket design would not be sufficiently advanced to carry the size of payloads required, and another rocket-Eldo B-with liquid hydrogen as fuel for the second and third stages to be the better first design, partly due to reduce the cost of the project by eliminating transition test launchers.

The book presents a systematic discussion of ideas about the reasons for a culture making a transition by stages from egalitarian hunter-gatherer to hierarchically based states as population density increases.

The transition involves four stages, or possibly five

Lines 8 and 10 are ‘ tie lines ’ or ‘ pivot lines ’ and are used for the transition between the stages of the compound nomogram.

Intermediate stages in the transition from the old beekeeping to the new were recorded for example by Thomas Wildman in 1768 / 1770, who described advances over the destructive old skep-based beekeeping so that the bees no longer had to be killed to harvest the honey.

At the most basic stages, this begins with a slow transition from oral traditions to a writing culture that diffuses knowledge.

This permits transition through the various stages of education and employments and even into retirement.

Colonies of M. membranacea are protandrous sequential hermaphrodites, where colonies transition from male to female reproductive stages, allowing fertilization to occur between colonies or within colonies.

A conquest game splits into three phases, the transition between these stages are smooth.

In the scientific method, a question often forms the basis of the investigation and can be considered a transition between the observation and hypothesis stages.

In fact it gives the wrong answer, since we seem to be living at the time of transition between the matter and dark energy stages.

Not all of the conditions were certain to occur at each stage, however, and the stages and transition periods may occur at varying lengths from country to country, and even from region to region.

There is no archaeological evidence showing transition stages between the wolf and the often-similar spitz-type dogs.

The question of how a group of land mammals became adapted to aquatic life was a mystery until discoveries starting in the late 1970s in Pakistan revealed several stages in the transition of cetaceans from land to sea.

Woodland may form a transition to shrubland under drier conditions or during early stages of primary or secondary succession.

In the early stages of the 2010s, several governmental analysts observed that commercial networks were having trouble making the transition to digital television and subsequently, a $ 250m rebate was implemented on their licensing fees.

It must be recognized that countries at different stages of development have very different capabilities of meeting such conditions.

Cascaded single stages enclosed by a common envelope have been constructed with high gain and high resolution.

Both stages are assumed to have unity magnification.

In this way, red wine warms of itself quite rapidly -- and though it is true that it may not attain its potential of taste and fragrance until after the middle of the meal ( or the course ), in the meantime it will have run the gamut of many beguiling and interesting stages.

Most adolescents have some ideological diffusion at various developmental stages, as they experience a proliferation of ideas and values.

After describing the manifestation of the Gospel in the Ogdoad and Hebdomad, he adds that the Basilidians have a long account of the innumerable creations and powers in the several ' stages ' of the upper world ( diastemata ), in which they speak of 365 heavens and say that " their great archon " is Abrasax, because his name contains the number 365, the number of the days in the year ; i. e. the sum of the numbers denoted by the Greek letters in ΑΒΡΑΣΑΞ according to the rules of isopsephy is 365:

Not all life cycle stages have been observed, and study of these organisms has been hampered mainly by an inability to maintain these organisms in culture through successive generations.

The Baltic languages are of particular interest to linguists because they retain many archaic features, which are believed to have been present in the early stages of the Proto-Indo-European language.

Currently only two series and four stages are named and have a GSSP.

The turnover in this group is clearly marked at the species level .< ref > Statistical analysis of marine losses at this time suggests that the decrease in diversity was caused more by a sharp increase in extinctions than by a decrease in speciation .< ref > The K – T boundary record of dinoflagellates is not as well-understood, mainly because only microbial cysts provide a fossil record, and not all dinoflagellate species have cyst-forming stages, thereby likely causing diversity to be underestimated.

Many have complex lifecycles with asexual polyp stages and sexual medusae, but some omit either the polyp or the medusa stage.

Steam ejectors can have a single or multiple stages, with and without condensers in between the stages.

A column with a high reflux ratio may have fewer stages, but it refluxes a large amount of liquid, giving a wide column with a large holdup.

Conversely, a column with a low reflux ratio must have a large number of stages, thus requiring a taller column.

The Redkino, Kotlin and Rovno regional stages have been substantiated in the type area of the Vendian on the basis of the abundant organic-walled microfossils, megascopic algae, metazoan body fossils and ichnofossils.

* Single-ended output stages ( be they tube or transistor ) have an asymmetrical transfer function, meaning that even order harmonics in the created distortion tend not to be canceled ( as they are in push – pull output stages ); by using tubes OR FETs most of the distortion is from the square law transfer characteristic and so second-order, which some consider to be " warmer " and more pleasant.

For example, educational psychologists have conducted research on the instructional applicability of Jean Piaget's theory of development, according to which children mature through four stages of cognitive capability.

Hence GSSPs are usually described in terms of transitions between different faunal stages, though far more faunal stages have been described than GSSPs.

Paleontologists have defined no faunal stages for the Holocene.

The genera Percolomonas, Lyromonas, and Psalteriomonas are known only as flagellates, while Vahlkampfia, Pseudovahlkampfia, and the acrasids do not have flagellate stages.

Most countries in the early stages of developing ICBMs have used liquid propellants, with the known exceptions being the Indian Agni-V, the planned South African RSA-4 ICBM and the now in service Israeli Jericho 3.

Even looking at the mousetrap analogy, several critics have described ways in which the parts of the mousetrap could have independent uses or could develop in stages, demonstrating that it is not irreducibly complex.