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, the laboratory rendered centralized macropathological service to qualified requesters.

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 the Crusades, Europeans were exposed to Saracen composite bows, made from layers of different material — often wood, horn and sinew — glued together and bound with animal tendon.

During this time, European manufacturers also began regularly purifying saltpeter, using wood ashes containing potassium carbonate to precipitate calcium from their dung liquor, and using ox blood, alum, and slices of turnip to clarify the solution.

During the Tang Dynasty ( 618 – 907 ) between the 7th and 9th century AD, wood blocks were cut to print on textiles and later to reproduce Buddhist texts.

During the period 1850-1890 Sweden witnessed a veritable explosion in its export sector, with agricultural crops, wood and steel being the three dominating categories.

During their dig they found the remains of a Benedictine chapel that was built in c. 1139 by monks from Glastonbury Abbey, a reliquary, graves and the remains of much earlier Romano-British chapels built of wood with dating evidence suggesting use by Christians before the reign of Constantine the Great.

During Lennon's post-Beatles years in New York, this guitar was restored to its original natural wood finish and the cracked gold pickguard replaced with a white one.

During the war and the 1920s its industries expanded to meet the European demand for Swedish steel, ball bearings, wood pulp, and matches.

During this period, Asian women were still wearing traditional hairstyles held up with combs, pins and sticks crafted from tortoise, metal, wood and other materials, but in the middle 1880s, upper-class Japanese women began pushing back their hair in the Western style ( known as sokuhatsu ), or adopting Westernized versions of traditional Japanese hairstyles ( these were called yakaimaki, or literally, soirée chignon ).

During the tuning, wood is taken from the middle underside of the bar to lower the pitch.

During the Napoleonic wars French and English seamen who were taken prisoner were confined, sometimes for many years, and in their boredom sought relief by building ship models from scraps of wood and bone.

During the Exodus, the ancient Israelites employed shittah wood in making the various parts of the Tabernacle and of the Ark of the Covenant.

During the Renaissance, prosthetics developed with the use of iron, steel, copper, and wood.

During the rainy season, masses of buried wood can absorb enough water to sustain crops through the dry season.

During this time he took up the hobby of building balsa wood airplanes of his own design, and was a member of the school's modeling club.

During the heyday of mining in the area ( the 1870s ), Cartago was a steamboat port for shipment of wood and ore.

During the 1920s, fire destroyed almost all of the wood buildings in the center of town.

During the turn of the century 1900s wood chemical plants dotted McKean County and pumped money into the local economy.

During WWII Roddis Lumber and Veneer produced plywood and other composites and was " the allies ' largest pre-fabricator of wood for Liberty Ships.

During these same years he made a few drawings on wood, turning to account his early facility in this mode.

During repeated firing, guns could become clogged and explode, causing pieces of metal and wood to break off, which could be dangerous to the gunner and even those around him.

During the production process biomass or other carbon-containing materials are gasified within the oxygen-limited environment of a wood gas generator to produce hydrogen and carbon monoxide.

During the industrial revolution, which reached Sweden in the mid-19th century, Norrland became the source for the important wood and pulp industry.

During the early 1990s about 60 % per cent of households used wood heaters, but now only 25 – 30 % of households use wood heating.