However, almost every aspect of chemistry can be described in a qualitative or approximate quantitative computational scheme.

However, this value is only approximate, as reaction quotient is defined in terms of ion activities which can be approximated with the concentrations as calculated here.

However, the 2010 sequencing of the Neanderthal genome indicated that Neanderthals did indeed interbreed with anatomically modern humans circa 45, 000 to 80, 000 years ago ( at the approximate time that modern humans migrated out from Africa, but before they dispersed into Europe, Asia and elsewhere ).

However, recent developments attempt to show that if locality is only approximate and the holographic principle is correct, the Weinberg – Witten theorem would not be valid.

However, all minerals are stable only within certain limits, and the presence of some minerals in metamorphic rocks indicates the approximate temperatures and pressures at which they formed.

However, this date is very approximate, as many scholars have contended that Sumerian was already dead or dying as early as around 2100 BC, by the beginning of the Ur III period, while others believe that Sumerian persisted as a spoken language in a small part of Southern Mesopotamia ( Nippur and its surroundings ) until as late as 1700 BC.

However, the word ' auraka ' in Cook Islands Māori is a prohibitive adverb, with the approximate meaning ' do not '; it does not mean'all-devouring '.

Painter writes, " However, Caxton's own output reveals the approximate time of his death, for none of his books can be later than 1491, and even those which are assignable to that year are hardly enough for a full twelve months ' production ; so a date of death towards autumn of 1491 could be deduced even without confirmation of documentary evidence.

However, except for wide-angle lenses, it is reasonable to approximate radians or degrees.

However, in her lectures to teacher trainees she set out several periods with the approximate ages to which they applied.

However, there are circumstances where the activity and the concentration are significantly different and, as such, it is not valid to approximate with concentrations where activities are required.

However, it is still uncertain how to best approximate polarizability in a simulation.

However some may approximate monophyletic groups, such as the Suessiales, and some have not been studied phylogenetically.

However for the compilation of social statistics and other purposes, approximate equivalences have to be established.

However, regardless of the culture, all lunar months approximate the mean length of the synodic month, or how long it takes to pass through each phase ( new, half, full moon ) and back again.

However, the western half of the volcano has an approximate volume of and an estimated mass of.

However, since the machines were not designed to separate ballots as such when originally counted, the identification of these ballots can only be approximate ; the totals do not match.

However, the term ( and its approximate sense ) can be found at least as early as 1840, in John Stuart Mill's 1840 essay on Coleridge, where Mill contrasts the Kantian-influenced thought of " Continental philosophy " and " Continental philosophers " with the English empiricism of Bentham and the 18th century generally.

However, by comparing the shape and style of the characters contained within the text to those found on other Etruscan artifacts it is possible to infer an approximate date of 250 BCE.

However, the molecule has two lone electrons in an orbital, that points towards the fourth apex of the approximate tetrahedron, ( VSEPR ).

However, real implementations of sliding mode control approximate this theoretical behavior with a high-frequency and generally non-deterministic switching control signal that causes the system to " chatter " in a tight neighborhood of the sliding surface.

However, functional imaging can only identify the approximate localization of brain activations in terms of Brodmann areas since their actual boundaries in any individual brain requires its histological examination.

However, as this format was designed for playback ( e. g. by sequencers ) rather than notation, it only produces approximate results and much notational information is lost in the process

However, there a hundreds of geographic references throughout Japan and even into the northern Kuriles using " shiri ", to approximate the Ainu word shir, meaning island.

However, the use of molecular phylogenetics for dating evolutionary transitions is controversial.

However, the discrete and separate nature of the molecular concept usually requires that molecular ions be present only in well-separated form, such as a directed beam in a vacuum in a mass spectrograph.

However this approach has none of the physical pictures of the valence bond and molecular orbital theories and is difficult to extend to larger molecules.

However, the later edition in 1959 failed to adequately address the problems that appeared to be better understood by molecular orbital theory.

However, the work of Friedrich Hund, Robert Mulliken, and Gerhard Herzberg showed that molecular orbital theory provided a more appropriate description of the spectroscopic, ionization and magnetic properties of molecules.

However, molecular pharmacology studies have shown that alcohol has only a few primary targets.

However, recently a transfection vector was developed and the transfection conditions for E. invadens were optimised which should enhance the research possibilities at the molecular level of the differentiation process.

However, other evidence was interpreted as suggesting that DNA was structurally uninteresting and possibly just a molecular scaffold for the apparently more interesting protein molecules.

However, later research showed that triple-stranded, quadruple-stranded and other more complex DNA molecular structures required Hoogstein bonds.

However, models that suggest molecular rearrangement, reorganization, and pre-complexing of effector molecules are beginning to be accepted.

However, our understanding of the molecular mechanisms behind genomic imprinting show that it is the maternal genome that controls much of the imprinting of both its own and the paternally-derived genes in the zygote, making it difficult to explain why the maternal genes would willingly relinquish their dominance to that of the paternally-derived genes in light of the conflict hypothesis.

" However, Freitas and Merkle argue that a focused effort to achieve diamond mechanosynthesis ( DMS ) can begin now, using existing technology, and might achieve success in less than a decade if their " direct-to-DMS approach is pursued rather than a more circuitous development approach that seeks to implement less efficacious nondiamondoid molecular manufacturing technologies before progressing to diamondoid ".

However, any given molecule may contain any given combination of isotopes, so there may be multiple molecular masses for each chemical compound.

However, additional molecular interactions may render the amide form less stable ; the amino group is expelled instead, resulting in an ester ( Ser / Thr ) or thioester ( Cys ) bond in place of the peptide bond.

However, the heterozygous advantage hypothesis was proposed in one review in which the author himself writes, " Although cellular / molecular evidence presently is not available for this hypothesis, the CF mutation may be one of several mutations that have spread in European populations because they increased resistance to infectious diseases.

However, studies starting in 1999, based on molecular phylogeny or morphology, have supported uniting these two families.

However, calculations of Y pestiss evolutionary age, found using the number of synonymous single nucleotide polymorphisms ( SNPs ) in conjunction with molecular clock rates, date the emergence of the biovars prior to any of the historical epidemics due to the length of time needed to accumulate such mutations.

However, the wide breadth of Xenopus research stems from the additional fact that cell-free extracts made from Xenopus are a premier in vitro system for studies of fundamental aspects of cell and molecular biology.

However, with the rise of molecular techniques, it has now become possible to establish the taxonomic status of new discoveries, such as the Bulo Burti Boubou Laniarius liberatus ( no longer a valid species ) and the Bugun Liocichla Liocichla bugunorum, using blood, DNA and feather samples as the holotype material.

However, mounting molecular evidence indicates a closer relationship with the nematomorpha.

However, recent molecular phylogenetic studies have strongly suggested that treeshrews should be given the same rank ( order ) as the primates and, with the primates and the flying lemurs ( colugos ), belong to the clade Euarchonta.

However, in spite of this apparently very great difference in form, recent mycological research, both at microscopic and molecular level has shown that sometimes species of open mushrooms are much more closely related to particular species of gasteroid fungi than they are to each other.

However, current molecular clock estimates indicate that Ficus is a relatively ancient genus being at least 60 million years old, and possibly as old as 80 million years.

However, one of the most recent molecular studies, published in 23 February 2012, suggests that turtles are lepidosauromorph diapsids, most closely related to the lepidosaurs ( lizards, snakes, and tuataras ).