Since then, biochemistry has advanced, especially since the mid-20th century, with the development of new techniques such as chromatography, X-ray diffraction, dual polarisation interferometry, NMR spectroscopy, radioisotopic labeling, electron microscopy, and molecular dynamics simulations.

Since their invention and subsequent proliferation in the mid-20th Century, ballpoint pens have proven to be a versatile art medium for professional artists as well as amateur doodlers.

Since the mid-20th century, there has been an ongoing search for signs of extraterrestrial life, from radios used to detect possible extraterrestrial signals, to telescopes used to search for potentially habitable extrasolar planets.

Since the mid-20th Century, advances in rubber, plastics, synthetic cloth, and industrial adhesives have allowed manufacturers to create shoes that stray considerably from traditional crafting techniques.

Since the mid-20th Century, many cookbooks highlighting soul food and African American foodways, compiled by African Americans, have been published and well received.

Since the mid-20th century, archaeological sources have helped build a more complete and balanced picture.

Since the mid-20th century " bad " and " good " witchcraft are increasingly distinguished, the latter often involving healing.

Since the mid-20th century Witchcraft has become the designation of a branch of neopaganism, specifically those Wicca traditions following Gerald Gardner, who claimed a religious tradition of Witchcraft with pre-Christian roots.

Since the mid-20th century, Fort Saint Elmo has housed Malta's police academy.

Since the mid-20th century, such medications have been leading treatments for a broad range of mental disorders and have decreased the need for long-term hospitalization therefore lowering the cost of mental health care.

Since the mid-20th century a number of artists have popularized the genre, such as Julio Iglesias, Luis Miguel and Cristian Castro.

Since the mid-20th century, nations have increasingly reduced tariff barriers and currency restrictions on international trade.

Since the mid-20th century, most of the US imports are from Southern Italy, with the large, meaty, and richly flavored Sicilian chestnuts being considered among the best quality for bulk sale and supermarket retail.

Since the remnants of the original village, following the current Vitoria-Gasteiz, to the Gothic redesign of the mid-20th century, passing through foundations of more than a millennium old, and plans Romanesque and Gothic, all perfectly discernible by the color of materials used at each stage.

Since the mid-20th century, the 1942 version has usually been performed by classical orchestras playing the expanded arrangement.

Since the analysis of musicologist Charles Seeger in the mid-20th century, American music history has often been described as intimately related to perceptions of race and ancestry.

Since the mid-20th century, intensive water consumption has dewatered the lower course of the river such that it no longer reaches the sea except in years of heavy runoff.

Since the mid-20th century, the term has expanded to accommodate creators of electroacoustic music, in which composers directly create sonic material in any of the various electronic media.

Since the mid-20th century, Tiverton has grown as a summer resort and residential area, and as a suburb of Fall River, Massachusetts.

Since the mid-20th century, this river has shrunk significantly.

Since the mid-20th century they have been subject to ongoing study by many organisations and individuals.

Since the mid-20th century, the seal population has had a rebound and multiplied greatly.

Since the mid-20th century, the official name has been gradually forgotten, and today is found mainly in history books, legal documents, title deeds, and civil engineering reports.

Since the mid-20th Century Ronco sopra Ascona is a popular resort, with many vacation homes.

Since writing was practiced in the Aegean before the end of the century, we may hope that the details of tradition will now be occasionally useful.

Since Alexander's work in the field came at the turn of the century, his ideas influenced many originators in the field of mind-body improvement.

Since the 20th century, the appointment of Archbishops of Canterbury conventionally alternates between more moderate Anglo-Catholics and Evangelicals.

Since the early 20th century, the armed forces have pursued the goal of weapons self-sufficiency.

Since Pope Leo XIII issued the bull Apostolicae Curae in 1896, the Catholic Church has insisted that Anglican orders are invalid because of changes in the Anglican ordination rites of the 16th century and divergence in understanding of the theology of priesthood, episcopacy and Eucharist.

Since the early 20th century it has been commonly accepted that Old Irish Bel ( l ) taine is derived from a Common Celtic * belo-te ( p ) niâ, meaning " bright fire " ( where the element * belo-might be cognate with the English word bale in ' bale-fire ' meaning ' white ' or ' shining '; compare Anglo-Saxon bael, and Lithuanian / Latvian baltas / balts, found in the name of the Baltic ; in Slavic languages byelo or beloye also means ' white ', as in Беларусь ( White Russia or Belarus ) or Бе ́ лое мо ́ ре Sea ).

Since Daniel was a statesman during the Persian conquests, the Book of Daniel could have been written in a period when the Persians had their greatest influence on Aramaic, believed to be in the mid 6th century BC.

Since the second half of the 20th century most scholars have agreed with Martin Noth's thesis that the books of Deuteronomy, Joshua, Judges, Samuel and Kings form parts of a single work.

Since the late nineteenth century, the South used a colloquial term, the one-drop rule, to classify as black a person of any known African ancestry.

Since the Anglo-Boer war the term " Boervolk " was rarely used in the 20th century by the various regimes because of this attempt to assimilate the Boervolk with the Afrikaners.

Since the second half of the 20th century, computers have been programmed to play chess with increasing success, to the point where home computers can play chess at a very high level.

Since the 12th century, courts have had parallel and co-equal authority to make law -- " legislating from the bench " is a traditional and essential function of courts, which was carried over into the U. S. system as an essential component of the " judicial power " specified by Article III of the U. S. constitution.

Since the late nineteenth century, only two brief periods of violence have marred its democratic development.

Since the consolidation of newspaper comics by the first quarter of the 20th century, most cartoonists have used a group of assistants ( with usually one of them credited ).

Since the 20th century, another source of words has been Japanese using existing kanji ( Chinese characters used in Japanese ).

Since the 16th century, Portugal extensively adopted slavery to man their colonies, coming mainly from West and Central Africa.

Since direct observations of climate are not available before the 19th century, paleoclimates are inferred from proxy variables that include non-biotic evidence such as sediments found in lake beds and ice cores, and biotic evidence such as tree rings and coral.

Since the later 20th century, use of CE and BCE has been popularized in academic and scientific publications, and more generally by publishers emphasizing secularism or sensitivity to non-Christians.

Since the discovery of his " Letter to the Alexandrians " in the last century, much work has been done to rehabilitate Claudius and determine where the truth lies.

Since at least the 3rd century BC, there was influence of northern nomadic peoples and Yemaek peoples on Korean Warfare.

Since the early 21st century within the global functional food industry, raw cranberries have been marketed as a " superfruit " due to their nutrient content and antioxidant qualities.

Since the 19th century, US foreign policy also has been characterized by a shift from the realist school to the idealistic or Wilsonian school of international relations.

Since the Christianization of Ethiopia in the 4th century, the Church of Ethiopia has come under the dominion of the Church of Alexandria.