When surplus land is not expensive to buy or to keep up, it is usually better to buy it than to buy so small an acreage that the development of adjoining properties might impair the residential value of the farm.

When many partially transparent layers need to be composited together, it is worthwhile to consider the algebraic properties of compositing operators used.

When a field travels across to different media, the properties of the field change according to the various boundary conditions.

When these assumptions are violated or other statistical properties are desired, other estimation techniques such as maximum likelihood estimation, generalized method of moments, or generalized least squares are used.

When it appears, it imparts to chemical structures some of the reactive and interactive properties of the-OH of water ( ionizability, hydrogen bonding, etc .).

When studying inorganic compounds, one often encounters parts of the different classes of inorganic chemistry ( an organometallic compound is characterized by its coordination chemistry, and may show interesting solid state properties ).

When such reports are verified by the Orthodox hierarchy, they are understood as miracles performed by God through the prayers of the saint, rather than being magical properties of the painted wood itself.

When a magnetized ferromagnetic material is heated to the Curie point temperature, the molecules are agitated to the point that the magnetic domains lose the organization and the magnetic properties they cause cease.

When designed to avoid the body's defence mechanisms, nanoparticles have beneficial properties that can be used to improve drug delivery.

When considering light's particle-like properties, the light is modelled as a collection of particles called " photons ".

When subjected to an electromagnetic field the paramagnetic particles change spacing, modifying their color and reflective properties.

When describing the pharmacokinetic properties of a chemical, pharmacologists are often interested in LADME:

When placed in water, phospholipids form a variety of structures depending on the specific properties of the phospholipid.

When the experiments that had produced polywater were repeated with thoroughly cleaned glassware, the anomalous properties of the resulting water vanished, and even the scientists who had originally advanced the case for polywater agreed that it did not exist.

When comparing the properties of compounds in combinatorial chemistry libraries to those of approved drugs and natural products, Feher and Schmidt noted that combinatorial chemistry libraries suffer particularly from the lack of chirality, as well as structure rigidity, both of which are widely regarded as drug-like properties.

When a hard polymer is used as the secondary coating, the properties are a cross between diffusion-controlled particles and traditional sulfur-coated.

When cooled below the glass transition temperature, the quasi-fluid chain segments " freeze " into fixed geometries and the rubber abruptly loses its elastic properties, although the process is reversible.

When the gap is sufficiently wide, real estate developers, landlords, and other people with vested interests in the development of land perceive the potential profit to be derived from re-investing in inner-city properties and redeveloping them for new tenants.

When Hope died on December 4, 1862, his wife Anne Adele inherited the gem, but feared that the profligate lifestyle of her son-in-law might cause him to sell the Hope properties.

When the soaring inflation and energy costs threatened the survival of thousands of private apartment buildings in the 1970s, FHA ’ s emergency financing kept cash-strapped properties afloat.

When the numbers of non-white landowners began to increase, a minimum value was established for the properties which entitled their owners to vote.

When Mendeleev proposed his periodic table, he noted gaps in the table, and predicted that as-yet unknown elements existed with properties appropriate to fill those gaps.

When Hélène's sister, Colette de Chambes, was believed to have been poisoned by her aged husband Louis d ' Amboise, Viscount of Thouars, in a fit of jealousy over her affair with Charles de Valois, Louis XI's brother, the king had confiscated most of his properties.

When the same image is displayed on a CRT screen for long periods of time, the properties of the exposed areas of phosphor coating on the inside of the screen gradually and permanently change, eventually leading to a darkened shadow or " ghost " image on the screen.

When the piston is at bottom dead center, the burnt gases escape from the exhaust port.

When connecting glassware, it is often tempting to use Keck clips on every joint, but this can be dangerous if the system is sealed or the exhaust is in any way restricted ; e. g. by wash flasks or drying media.

When idling, and at low-to-moderate speeds, the turbine produces little power from the small exhaust volume, the turbocharger has little effect and the engine operates nearly in a naturally aspirated manner.

When much more power output is required, the engine speed and throttle opening are increased until the exhaust gases are sufficient to ' spin up ' the turbocharger's turbine to start compressing much more air than normal into the intake manifold.

When fitted with a turbo ( as with any form of supercharging ), the engine's specific power is increased, leading to higher combustion and exhaust temperatures.

When the GTE 16v arrived in the UK, it was subject to stricter emissions regulations ; to meet these, a new exhaust manifold was applied to the C20XE, which robbed the engine of 6ps.

When the results of early studies of smog in Los Angeles were published, Houdry became concerned about the role of smoke stack exhaust and automobile exhaust in air pollution and founded a company, Oxy-Catalyst.

When insufficient oxygen is available from the exhaust stream, the stored oxygen is released and consumed ( see cerium ( IV ) oxide ).

When attacking other flying birds, the Great Black-backed Gulls often pursue them and attack them on the wing by jabbing with their bill and hoping to exhaust the other bird.

When equipped with dual exhaust, the 400 Turbo jet was rated at.

When the engine is running above a certain rpm, the exhaust valve is held open, and the magneto is prevented from generating a spark.

When a gas turbine engine is optimized for shaft power output, the exhaust pressure and temperature are minimized for maximum thermal efficiency within the limits of a Brayton cycle engine.

When divers must work in hazardous environments such as sewage or dangerous chemicals, a helmet ( usually of the free-flow type or using a series exhaust valve system ) is sealed to a special drysuit ( commonly made of a fabric with a smooth vulcanised rubber outer surface ) to completely isolate and protect the diver.

When the flow of exhaust gases from the engine to the atmosphere is obstructed to any degree, back pressure arises and the engine's efficiency, and therefore power, is reduced.

When activated, it opens exhaust valves in the cylinders after the compression cycle, releasing the compressed air trapped in the cylinders, and slowing the vehicle.

When an engine starts its exhaust stroke, the piston moves up the cylinder bore, decreasing the total chamber volume.

When the exhaust valve opens, the high pressure exhaust gas escapes into the exhaust manifold or header, creating an ' exhaust pulse ' comprising three main parts:

When more power is called for, the exhaust valve is reactivated and the old exhaust gas is expelled during the exhaust stroke.