During this precarious period of development the mother should continue to influence the growth of the child's conscience.

During the period from 1 July 1960 through 31 January 1961, additional research affiliations were effected with the U. S. Army Medical Research and Development Command to conduct research in procedures for quantitative electron microscopy, and for the study of biophysical and biological studies of the structure and function of ocular tissue.

During this period, a total of 762 exhibits were presented at 442 medical and scientific meetings.

During the period of this report, 37,470 new cases were entered into the various registries.

During this period, 7,827 teaching sets were distributed on loan.

During the period of this report, 63 panel exhibits depicting the latest developments in medical research were displayed.

During the period from 1 July 1960 through 31 January 1961, the Medical Museum was required to move to Temporary Building `` S '' on the Mall from Chase Hall.

During the period of about 4 hours around sunset, skywave transmission conditions are building up until full nighttime conditions prevail ; ;

During the Civil War period Mr. Brown also invented the Brown & Sharpe formed tooth gear cutter, a basic invention which ultimately revolutionized the world's gear manufacturing industry by changing its basic economics.

During this period 7,484,268 members were received, yet the net membership now is only 9,910,741.

During the period of the Iberian Union ( 1580 – 1640 ), Portugal lost influence and power and made new enemies.

During the Romantic period, art came to be seen as " a special faculty of the human mind to be classified with religion and science ".< ref >

During the same period the Georgian states of Colchis and Tabal arose around the Black Sea and central Anatolia respectively.

During this same period, slave-holding border states had more free African-Americans and European immigrants than the lower South, which increased Southern fears that slavery was threatened with rapid extinction in this area.

During this period he published 18 plays and 3 novels, including the murder mystery The Red House Mystery ( 1922 ).

During this period winter sports were slowly introduced: in 1882 the first figure skating championship was held in St. Moritz, and downhill skiing became a trendy sport with English visitors early in the 20th century, as the first ski-lift was installed in 1908 above Grindelwald.

During the post-World War I period ski-lifts were built in Swiss and Austrian towns to accommodate winter visitors, but summer tourism continued to be important ; by the mid-20th century the popularity of downhill skiing increased greatly as it became more accessible and in the 1970s several new villages were built in France devoted almost exclusively to skiing, such a Les Menuires.

During the first 11 months of 2006, net imports grew by 21 percent to $ 1. 95 billion, while exports stood at $ 895 million, up 0. 3 percent from the same period in 2005.

During the first 11 months of 2006, the European Union remained Armenia's largest trading partner, accounting for 34. 4 percent of its $ 2. 85 billion commercial exchange during the 11-month period.

During January – February 2007, Armenia ’ s trade with Russia and other former Soviet republics was $ 205. 6 million ( double the amount from the same period the previous year ), making them the country ’ s number one trading partner.

During this period, spectator attendances dropped and media condemnation increased, but Simpson and Lawry flatly disregarded the public dissatisfaction.

During the Tokugawa period ( 1600 – 1868 ) the Ainu became increasingly involved in trade with Japanese who controlled the southern portion of the island that is now called Hokkaido.

During this period Agamemnon and his brother, Menelaus, took refuge with Tyndareus, King of Sparta.

During the Akkadian period, the Akkadian language became the lingua franca of the Middle East, and was officially used for administration, although the Sumerian language remained as a spoken and literary language.

During his time as an honors program undergraduate, Sagan worked in the laboratory of the geneticist H. J. Muller and wrote a thesis on the origins of life with physical chemist H. C. Urey.

During the first half of the nineteenth century, scientists realized that organic compounds can be synthesized in the laboratory.

During the early 1950s, while Watson and Crick were determining the structure of deoxyribonucleic acid ( DNA ), they made use of unpublished X-ray diffraction images taken by Rosalind Franklin, shown at meetings and shared with them by Maurice Wilkins, and of Franklin's preliminary account of her detailed analysis of the X-ray images included in an unpublished 1952 progress report for the King's College laboratory of Sir John Randall.

* During the scene in the laboratory where the Monster comes after Chick and Wilbur after throwing Sandra through the window, Glenn Strange stepped on a camera cable, causing the camera to fall and break some bones in his foot.

During elementary school, he was driven by chauffeur to William Penn Charter School, and in high school joined the Engineer's Club of Philadelphia and spent afternoons at the electronics laboratory of television inventor Philo Farnsworth in Chestnut Hill.

During the mission, Tuvok's identity was uncovered by a Maquis intelligence agent, who uses Tuvok as a laboratory specimen for mind-control experiments.

During the Easter vacation in 1856, while Hofmann was visiting his native Germany, Perkin performed some further experiments in the crude laboratory in his apartment on the top floor of his home in Cable Street in east London.

During the 1950s, Selye turned away from the laboratory to promote his concept through popular books and lecture tours.

During World War I ( 1913-18 ), the local government board's laboratory was assumed by the national government, namely UK government, and became the Ministry of Health's Pathological Laboratory — where Griffith was medical officer.

During this time he built one of the world's first wind tunnels which led to the formation of an aerodynamic laboratory at IMTU.

During his 1930 visit the laboratory work was " classical physiology ," which Ochoa described as “ one could see muscles twitching everywhere ”.

During most of the 1790s, Brown developed his literary ambitions in projects that often remained incomplete ( for example the so-called " Henrietta Letters ," transcribed in the Clark biography ) and frequently used his correspondence with friends as a sort of laboratory for narrative experiments.

During the Great War, having been wounded three times, he was attached to the Department of Inventions of the Normal School from 1917 to 1919, studied at the laboratory the shells at long range, and thereafter, the flight of birds and matters relating to aviation ( theory test fish ).

During Park's time at the University of Chicago, its sociology department began to use the city that surrounded it as a sort of research laboratory.

During the World War II, some of his excellent collaborators were lost, but Ružička restructured his laboratory with new, younger and promising people ; among them was young scientist Vladimir Prelog.

During her time in Joshua Lederberg's laboratory, Esther Lederberg also discovered fertility factor F, later publishing with Joshua Lederberg and Luigi Luca Cavalli-Sforza.

During the eight-day flight, the crew focused on life science and materials processing experiments in over forty investigations in the Spacelab laboratory, as well as scientific and engineering tests performed aboard the Orbiter Endeavour.

During World War II, Levi-Montalcini conducted experiments from a home laboratory, studying the growth of nerve fibers in chicken embryos which laid the groundwork for much of her later research.

" During the Progressive Era, proponents of the Wisconsin Idea saw the state as " the laboratory for democracy ", resulting in legislation that served as a model for other states and the federal government.

During summer months the lab sponsors a program for high school students which involves local-area high school juniors in the research being done at the laboratory.

During her time in Köhler ’ s laboratory, von Restorff published two papers, the second of which she co-authored with Köhler ( Köhler & von Restorff, 1935 ).

During the second world war, centralized sites such as the Radiation Laboratory at MIT and Ernest O. Lawrence's laboratory at the University of California, Berkeley allowed for a large number of expert scientists to collaborate towards defined goals as never before, and with virtually unlimited government resources at their disposal.

During its 87 year working life, the laboratory had an extremely distinguished career ; it can claim a stake in shaping the scientific careers of two Nobel Laureates, namely Lord Todd ( 1957 ) and Sir John W. Cornforth ( 1975 ) who passed their formative years as young chemists in the laboratories.

During a visit to the Central City police laboratory where Barry Allen worked, the freak accident that gave Allen his powers repeated itself, bathing West in electrically-charged chemicals.