Although earlier precursors to this presentation exist, its invention is generally credited to Russian chemist Dmitri Mendeleev in 1869, who intended the table to illustrate recurring trends in the properties of the elements.

Although precursors exist, the current table is generally credited to Dmitri Mendeleev, who developed it in 1869 to illustrate periodic trends in the properties of the then-known elements ; the layout has been refined and extended as new elements have been discovered and new theoretical models developed to explain chemical behavior.

Although it had historical precursors, this idea derived its main impetus from a famous report by Scoville and Brenda Milner describing the results of surgical destruction of the hippocampus ( in an attempt to relieve epileptic seizures ), in a patient named Henry Gustav Molaison, known until his death in 2008 as H. M.

Although these precursors often originate in urban areas, winds can carry NOx hundreds of kilometers, causing ozone formation to occur in less populated regions as well.

Although nominally a Platonist, he is really an Eclectic and one of the precursors of Neoplatonism.

Although fully fledged flying buttresses only developed in the Gothic period, their precursors can be found in Byzantine architecture and in some Romanesque buildings, such as Durham Cathedral, where quadrant arches were used to carry the lateral thrust of the stone vault over the aisles.

Although its precursors probably lie in the musical traditions of the historical Tai tribes that migrated south from China and northern Vietnam, much cross-pollination with indigenous music of the region as well as importation of Chinese, Mon-Khmer, Indian and Malay influences has also had a pronounced affect on the dances, instrumentation and melodies of morlam.

Although these precursors of aldosterone are weaker mineralocorticoids, the extreme elevations usually provide enough volume expansion, blood pressure elevation, and potassium depletion to suppress renin and aldosterone production.

Although insoluble in water, its precursors can be manipulated in aqueous solution.

Although there were distant precursors to telemedicine, it is essentially a product of 20th century telecommunication and information technologies.

Although the term " neoclassicism " refers to a twentieth-century movement, there were important nineteenth-century precursors.

Although Harvard College traces its origins to 1636, the precursors of GSAS only date back to the 1870s.

Although it is clear that these science precursors will not be able to answer all the scientific questions that the scientists have, it will already give them valuable information about some basic processes and will also help to define the scientific programme they want to perform on IMPACT.

Although Gandhi's aim of totally implementing the concepts of Swaraj in India was not achieved, the voluntary work organizations which he founded for this purpose did serve as precursors and role models for peoples movements, voluntary organisations and some of the non-governmental organisations that were subsequently launched in various parts of India.

Although the Mr. Hankey short film was never made, Parker and Stone made two Christmas-related animated short films called The Spirit of Christmas, which served as precursors to the South Park series.

Although he used the usual French terms " avant J .- C ." ( before Jesus Christ ) and " après J .- C ." ( after Jesus Christ ) to label years elsewhere in his book, the Byzantine historian Venance Grumel used negative years ( identified by a minus sign, −) to label BC years and unsigned positive years to label AD years in a table, possibly to save space, without a year 0 between them.

Although all group 16 elements of the periodic table, including oxygen, are defined as chalcogens, oxygen and oxides are usually distinguished from chalcogens and chalcogenides.

Although knitting needle diameter is often measured in millimeters, there are several different size systems, particularly those specific to the United States, the United Kingdom and Japan ; a conversion table is given at knitting needle.

Although he is not actually named in that passage, he does appear in Naturalis Historia 1 ( the table of contents ).

Although the company did raise about $ 30 million from the offering it is estimated that with the level of demand for the offering and the volume of trading that took place the company might have left upwards of $ 200 million on the table.

Although Richard Feynman noted that a simplistic interpretation of the relativistic Dirac equation runs into problems with electron orbitals at Z > 1 / α = 137, suggesting that neutral atoms cannot exist beyond untriseptium, and that a periodic table of elements based on electron orbitals therefore breaks down at this point, a more rigorous analysis calculates the limit to be Z ≈ 173, but also that this limit would not actually spell the end of the periodic table.

Although such behavior is not technically against the rules, it allegedly flouts the principles behind table stakes poker to the extent that some players consider it an ethically dubious variation on ratholing.

Although Montpelier's peak population shown in the adjacent table ( source: U. S. Census ) is shown as 3, 405, the city is thought to have had over 6, 500 residents around 1896 during the Indiana Gas Boom.

Although her family did not have indoor plumbing until after her father's death, they had a battery-powered table radio that fascinated Brenda as a baby.

Although boxes of tapes were brought by prosecutors to the courthouse and rested near the prosecution table, none were entered into evidence and played for the jury.

Although Jacob Jordaens did not specialize, he often repeated a theme based on a proverb that depicted a wide range of characters of a variety of ages, crowded in a festive scene around a banquet table.

Although E < sub > ea </ sub > varies greatly across the periodic table, some patterns emerge.

Although Allergan ( a biotech company ) tops the spending table with 43. 4 % investment, anything over 15 % is remarkable and usually gains a reputation for being a high technology company.

Although this custom is common in southern Chinese culture such as the Cantonese, in other parts of China it is only acceptable if for some reason you cannot actually say thank you at that moment, for example if you are in the middle of talking with someone else at the table.

Although the game is typically played on either a ping pong table or a folding banquet table, enthusiasts may create a personalized table for use by friends and visitors.

Dr. Widerhofer was admitted at once to the chamber of the Archduke, where the body was already laid out, that of Mademoiselle Vetsera having been removed to an adjoining room, where it was disposed on a couch and completely hidden with a plain white coverlet, pending the arrival of relatives, who had at once been summoned .... Although I entered the girl's death-chamber, I was prevented, from the position of the table, which ran lengthwise with the couch, from closely observing the body.

Although they were involved in attacks, their primary function was at the negotiation table with the Guatemalan government.

Although they had been in contention all season, Burnley had never led the table until this last match was played out.

Although there are differences, modern gay slang has adopted many Polari words, as detailed in the table below:

Although no national norms exist for the social development of children, the teacher can find a great deal of information concerning types of social behavior normally displayed by children at various age levels.

Although Utopian communism is both new in 1516 and also modern, it is not modern communism or even modern socialism, as they exist or have ever existed in theory or in practice.

Although this technique is simple and satisfactory, one practical difficulty does exist: the direction of true north must be known for each launch point.

Although the theological forms of the past continue to exist in a way they do not in a more secularized situation, the striking thing is the rapidity with which they are being reduced to a marginal existence.

Although most stand alone in the landscape, some examples exist of brochs surrounded by clusters of smaller dwellings.

Although the German General Staff was also abolished by the treaty, it nevertheless continued to exist as the Truppenamt or " Troop Office ", supposedly only an administrative body.

Although there is no strong evidence for any single theory, many independent theories exist, some blaming storms, some capsizing, and some suggesting that wartime enemy activity was to blame for the loss.

Although technology does not exist currently to measure this, it can be estimated by determining oxygen consumption by the brain.

Although rare, deposits of native chromium exist.

Although the isosahedral structure is extremely common among viruses because of size differences slight variations exist between virions.

Although professional cheerleading leagues exist in multiple countries, there are no Olympic Teams.

Although once thought to be a simple solution of molecules, multiple levels of organization exist in the cytosol.

Although most economies today are market economies or mixed economies ( which are partially planned ), fully planned economies exist in the remaining few countries of Cuba, Libya, North Korea, Saudi Arabia, Belarus, and Myanmar.

Although the abuses and atrocities that characterized the Macias years have been eliminated, effective rule of law does not exist.

Although humans exist and operate within ecosystems, their cumulative effects are large enough to influence external factors like climate.

Although humans exist and operate within ecosystems, their cumulative effects are large enough to influence external factors like climate.

Although seldom used in modern times, Edlin may sometimes be used as an Edlin-script interpreter, in environments where no other editors exist.

Although evidence-based medicine is regarded as the gold standard of conventional clinical practice, limitations or criticisms of its use exist, such as:

Although exceptions exist, the first day of the bis sextum ( February 24 ) was usually regarded as the intercalated or " bissextile " day since the third century.

Although no " Hopkinson flags " exist from the time period, it is believed that his flag contained 13 red and white stripes and 13 white stars arranged symmetrically on a field of blue.

Although many shelters still exist, some even being used as museums, virtually all fallout shelters have been decommissioned since the fall of the Soviet Union in 1991.

Although the problem is not known to be in NC, parallel algorithms with time superior to the Euclidean algorithm exist ; the best known deterministic algorithm is by Chor and Goldreich, which ( in the CRCW-PRAM model ) can solve the problem in O ( n / log n ) time with n < sup > 1 + ε </ sup > processors.

Although semitisms exist throughout the Gospel of Luke, it was composed in Koine Greek.

Although many regulations that discriminated against non-Christians — including Jews and other minority groups — had been eliminated during the unification of Germany in 1871, antisemitism continued to exist and thrive in Germany and other parts of Europe.