During this period most uniforms reflected the trends of the age, with boys wearing short trousers and blazers until roughly the age of puberty and then long trousers from about 14 or 15.

During puberty, an increase in male sex hormones called androgens cause the follicular glands to grow larger and make more sebum.

During puberty the hymenal opening can also be enlarged by tampon, menstrual cup use, pelvic examinations with a speculum, regular physical activity or sexual intercourse.

During puberty, 13 % of males experience their first ejaculation as a result of a nocturnal emission.

During puberty pubarche tends to occur earlier in girls than boys, as with most puberty stages and puberty as a whole.

During puberty, the virus enters the mammary glands with migrating lymphocytes and infects proliferating mammary gland epithelial cells.

During puberty the HPG axis is activated by the secretions of estrogen from the ovaries or testosterone from the testes.

During puberty, the increase in androgenic hormone levels causes vellus hair to be replaced with terminal hair in certain parts of the human body.

During embryogenesis DHT has an essential role in the formation of the male external genitalia, while in the adult DHT acts as the primary androgen in the prostate and in hair follicles.

During autumn when the photoperiod decreases ( less daylight ), the male canary's testes regress and androgen levels dramatically drop resulting in decreased singing frequency.

During the reproductive years, relatively elevated LH is frequently seen in patients with the polycystic ovary syndrome ; however, it would be unusual for them to have LH levels outside of the normal reproductive range.

During the mid-1970s, the LH & R became part of a proposal to run " Bunny Ski Trains " between Hoboken, New Jersey and the Playboy Resort ( Great Gorge ) in Vernon, New Jersey.

During this period, huge numbers of people moved south from the central plain, stimulating the development of Southern China.

During World War II, dozens of factories were evacuated from Ukraine and Western Russia to Krasnoyarsk and nearby towns, stimulating the industrial growth of the city.

During the war, an estimated 250, 000 soldiers passed through the gates of Camp Forrest, stimulating a commercial boom countywide but especially in Tullahoma.

During his time at the university, he had a stimulating influence on the study of ancient, and particularly Greek, art.

During an August 3, 1998 meeting, President Pastrana and U. S. President Bill Clinton discussed the possibility of " securing an increase in U. S. aid for counternarcotics projects, sustainable economic development, the protection of human rights, humanitarian aid, stimulating private investment, and joining other donors and international financial institutions to promote Colombia's economic growth ".

During a single acute exercise bout, AMPK allows the contracting muscle cells to adapt to the energy challenges by increasing expression of hexokinase II, translocation of GLUT4 to the plasma membrane, for glucose uptake, and by stimulating glycolysis.

During light stress violaxanthin is converted to zeaxanthin via the intermediate antheraxanthin, which plays a direct photoprotective role acting as a lipid-protective anti-oxidant and by stimulating non-photochemical quenching within light-harvesting proteins.

During TISM's appearance on the show, they described the traditional theme song as "... new and exciting ..." and its repetition as " always stimulating ... Why see different songs when you can see this one four or five times?

During his time at Oxford, Cornforth found working for, and with, Robert Robinson stimulating, and the pair would deliberate to no end until one had a cogent case against the other's counterargument.

During this period, Entezam was appointed as minister of foreign affairs, allowing Hoveida to assume a more intellectually stimulating role as Entezam's executive secretary.

During the fall mating season, bull moose may be aggressive toward humans due to the high hormone levels they experience.

During this conversation, Pettitte said Clemens had told him that McNamee had injected Clemens with human growth hormone.

During a stress response, the hypothalamus secretes various hormones, namely corticotropin-releasing hormone, which stimulates the body ’ s pituitary gland and initiates a heavily regulated stress response pathway.

During a stress response, the pituitary gland releases hormones into the blood stream, namely adrenocorticotropic hormone, which modulates a heavily regulated stress response system

During the 1960s, DES was used as a growth hormone in the beef and poultry industries.

During this time, the knowledge of the structure and function of the hormone increased.

During estrus ( in heat ) in mammals, the hormone estradiol ( a hormone of the class of hormones known as estrogens ) regulates this sexual receptivity behavior by the neurons in the ventromedial nucleus of the hypothalamus, the periaqueductal gray, and other areas of the brain.

During this shift, enduring questions about the nature and production of knowledge came to occupy a central place in cultural and social anthropology.

During the show's popular, although short-lived production, Bixby as always, invited a few old friends along to co-star such as Pamela Britton ( in her final role ), Kristina Holland and Ralph O ' Hara.

During production of the film Chaplin had been involved with the actress Pola Negri, a romantic pairing that received vast media interest.

During the depression years, rhinestones were even down-graded by some manufacturers to meet the cost of production.

During the early phases of the Big Bang, nucleosynthesis of hydrogen nuclei resulted in the production of hydrogen-1 ( protonium, < sup > 1 </ sup > H ) and helium-4 (< sup > 4 </ sup > He ), as well as a smaller amount of deuterium (< sup > 2 </ sup > H ) and very minuscule amounts ( on the order of 10 < sup >− 10 </ sup >) of lithium and beryllium.

During the late 19th century European and American companies introduced railways to carry to the ports the local production of raw materials intended for exports and also imports from Europe.

During the baking process of the green blocks as a part of commercial graphite production, most of the coal tar binders are vaporised and are generally burned in an incinerator to prevent release into the atmosphere, as COV and coal tar can be injurious to health.

During this transition, production was also moved from Düsseldorf to Ingolstadt where the successor company Audi still has its production.

During the 1950s, Kaye visited Australia, where he played " Buttons " in a production of Cinderella in Sydney.

During the production, specially shot footage portrayed Dalek atrocities.

During production, Executive Producers may be involved in some aspects of scripting, casting, and crewing.

During the 1990s, FAO took a leading role in the promotion of integrated pest management for rice production in Asia.

During the Information Age ( circa 1971 – 1991 ), the Knowledge Age ( circa 1991 to 2002 ), and the Intangible Economy ( 2002 – present ) many see the primary factors of production as having become less concrete.

During this time period Hawks first met Irving Thalberg, the frail and sickly vice-President in charge of production at Metro-Goldwyn-Mayer.

During the summer of 1992, a decision was made to end first-run production, and instead air highlights of the show's earlier years in a revamped program called Hee Haw Silver ( as part of celebrating the show's 25th year ).

During its production run, the Torana achieved legendary racing success in Australia, achieving victories at the Mount Panorama Circuit in Bathurst, New South Wales.

During World War II, the War Department allotted a rationed supply of brass to Kratt's factory to continue production of their harmonicas to be passed out by the Red Cross among the GI's serving overseas to boost morale.

During 1995, production of the M1114 based on the improved ECV chassis began.

During the period 1790-1815 Sweden experienced two parallel economic movements: an agricultural revolution with larger agricultural estates, new crops and farming tools and a commercialisation of farming, and a protoindustrialisation, with small industries being established in the countryside and with workers switching between agricultural work in the summer season and industrial production in the winter season.

During production Lewis developed the technique of using video cameras and multiple closed circuit monitors, which allowed him to review his performance instantly.

During World War II, he took on major domestic responsibilities and mobilized the millions of people imprisoned in NKVD Gulag camps into wartime production.

During the late 1940s and into the 1950s, a production unit at Metro-Goldwyn-Mayer headed by Arthur Freed made the transition from old-fashioned musical films, whose formula had become repetitive, to something new.

During gametogenesis — the production of new gametes by an adult — the normal complement of 46 chromosomes needs to be halved to 23 to ensure that the resulting haploid gamete can join with another gamete to produce a diploid organism.

During film production, these can take place on set.