When he built his first steel plant, he made a point of naming it after Thomson.

When a group of different plant species was prompted by a variety of different stress signals, such as drought or cold, each plant responded uniquely.

When the United States renounced its offensive biological warfare program in 1969 and 1970, the vast majority of its biological arsenal was composed of these plant diseases.

When Snodgrass and Heller visited Clipperton in 1898, they reported that " no land plant is native to the island ".

When plant tissues are shed or are eaten, the nitrogen in those tissues becomes available to animals and microbes.

When the mineral nutrients in the soil dissolve in water, plant roots are able to absorb them.

When the required mineral nutrients are introduced into a plant's water supply artificially, soil is no longer required for the plant to thrive.

When full scale production begins in 2013 this plant will produce an estimated 20 % of the global nickel supply.

When the plant dies, the fixed nitrogen is released, making it available to other plants and this helps to fertilize the soil.

When using continuous grazing, manage pasture height at one-half the recommended turn-in height for rotational grazing to optimize plant health.

When dealing with evidence about humans, archaeologists and palaeontologists may work together – for example palaeontologists might identify animal or plant fossils around an archaeological site, to discover what the people who lived there ate ; or they might analyze the climate at the time when the site was inhabited by humans.

When agriculture was first developed, simple hand-held digging sticks and hoes were used in highly fertile areas, such as the banks of the Nile where the annual flood rejuvenates the soil, to create drills ( furrows ) to plant seeds in.

When injected into plants, these proteins can enter the nucleus of the plant cell, bind plant promoter sequences, and activate transcription of plant genes that aid in bacterial infection.

When a DS1 is transported over metallic outside plant cable, the signal travels over conditioned cable pairs known as a T1 span.

When an invasive herbivore or plant enters the system, the balance is thrown off and the diversity can collapse to a monotaxon system.

When cut or grated, however, enzymes from the damaged plant cells break down sinigrin ( a glucosinolate ) to produce allyl isothiocyanate ( mustard oil ), which irritates the sinuses and eyes.

When he was about 14, his father took him to observe a lynching, from the window of his father's plant, of a young black man accused of rape.

When the Franco-Prussian War broke out, the war ministry, which had previously tested the possibility of feeding soldiers solely on instant pea soup and bread, built a large manufacturing plant and produced between 4, 000 and 5, 000 tons of Erbswurst for the army during the war.

When translated into Latin, this name was thought to refer to the plant Erysimum officinale, and so was translated into a Latin name for this plant,.

When imaging tissues which are differentially refractive, such as the spongy mesophyll of plant leaves or other air-space containing tissues, spherical aberrations that impair confocal image quality are often pronounced.

When dissected, the arrangement of the cells in a root is root hair, epidermis, epiblem, cortex, endodermis, pericycle and lastly the vascular tissue in the centre of a root to transport the water absorbed by the root to other places of the plant.

When he had closed the suitcase he found a rag and moved about the room, wiping carefully everything he might have touched.

When the plague hits, the deprivation of this symbol of freedom becomes more pronounced, as the beaches are closed, as is the port.

When closed the altarpiece displayed the four panels of the legend of St. Sebastian ’ s Martyrdom, while the opened wings displayed the Stations of the Cross.

When the key was not in use, that switch was kept closed, so that a signal was continually sent.

When the rest of the line was closed and all passenger services ceased, the section of the line between Cheddar and Yatton remained open for goods traffic.

When frightened, a " full closed grin " causes nearby individuals to be fearful, as well.

When a new junior high school was opened in 1986, the Fairmount High School building was closed for good.

When the border between Spain and Gibraltar was eventually closed by the Spanish dictator in 1969, the newspaper changed its ownership and begun to be published in English.

When he reached the town, he found the school closed for the night.

When it closed in 2002 it said its mission had been successfully achieved.

When the hats are closed, the pressure holding them together can be varied by varying the foot pressure.

When the loop is closed, the system may function as an artificial pancreas.

When a fluid is flowing through a closed channel such as a pipe or between two flat plates, either of two types of flow may occur depending on the velocity of the fluid: laminar flow or turbulent flow.

When the bomb reached the design height for this stage ( reportedly 2, 000 meters ) the membrane closed a circuit, activating the circuit between the radar altimeters and the projectile gun.

When the altimeters sensed the correct height, the firing switch closed, igniting the three BuOrd Mk15, Mod 1 Navy gun primers in the breech plug, which set off the charge consisting of four silk powder bags each containing two pounds of WM slotted-tube cordite.

When the Bank Street ground was temporarily closed by bailiffs in 1902, club captain Harry Stafford raised enough money to pay for the club's next away game at Bristol City and found a temporary ground at Harpurhey for the next reserves game against Padiham.

When considered together, the object and the mass constitute a closed system in which total momentum is conserved.

When the water level is below both switches, the switch contacts are closed providing signals to both the " Low Level " and " High Level " inputs to the PLC.

When not in use, the drawstring could be closed, completely covering the arrows so as to protect them from rain and dirt.

When considering isometry groups, one may restrict oneself to those where for all points the set of images under the isometries is topologically closed.

When a case is closed to the public, the court has to declare the reason.

When theories are studied in mathematics, they are usually expressed in some formal language and their statements are closed under application of certain procedures called rules of inference.

When the throttle is closed, compressed air will flow to the throttle valve without an exit ( i. e., the air has nowhere to go ).

When the network was closed, there were very few, if any, active TACS customers left.

When the bar closed, he found that his entire rig — horse, buggy, and samples — had been stolen.