Succulents or water-retaining plants, such as this Jelly Bean Plant ( Sedum rubrotinctum ) are often grown as Houseplants

Houseplants sometimes also need to be cleaned of dust and greasy films that collect on the leaves when they are indoors.

Houseplants together with the medium in which they are grown can reduce components of indoor air pollution, particularly volatile organic compounds ( VOC ) such as benzene, toluene, and xylene.

Houseplants are commonly grown for decorative purposes, positive psychological effects, or health reasons such as indoor air purification.

Houseplants are generally grown in specialized soils called potting compost or potting soil, not in local natural soil.

Houseplants in a controlled production greenhouse are kept in an ideal conditions for rapid growth.

* Spoerke, David G. and Smolinske, Susan C. Toxicity of Houseplants.

Before the development of silicon power rectifier diodes, cuprous oxide and later selenium was used ; its low efficiency gave it a much higher forward voltage drop ( typically 1. 4 to 1. 7 V per " cell ", with multiple cells stacked to increase the peak inverse voltage rating in high voltage rectifiers ), and required a large heat sink ( often an extension of the diode ’ s metal substrate ), much larger than a silicon diode of the same current ratings would require.

For Silius Italicus, who wrote as the games approached their peak, the degenerate Campanians had devised the very worst of precedents, which now threatened the moral fabric of Rome: " It was their custom to enliven their banquets with bloodshed and to combine with their feasting the horrid sight of armed men fighting ; often the combatants fell dead above the very cups of the revelers, and the tables were stained with streams of blood.

During the show's peak in popularity, Hee Haw often competed in syndication against The Lawrence Welk Show, a long-running ABC program which had also been canceled in 1971, also in an attempt to purge the networks of older demographic-leaning programs.

Recurrent mild hypoglycemia may fit a reactive hypoglycemia pattern, but this is also the peak age for idiopathic postprandial syndrome, and recurrent " spells " in this age group can be traced to orthostatic hypotension or hyperventilation as often as demonstrable hypoglycemia.

The hypnotheraputic ones are often repeated in multiple sessions before they achieve peak effectiveness.

However, there is often great structural damage to the target, and because the depth distribution is broad ( Bragg peak ), the net composition change at any point in the target will be small.

These individuals often experienced a " peak experience ".

Produced by Phil Spector, the record is often cited as one of the peak expressions of Spector's Wall of Sound production techniques.

This plot is one type of spectrum, with the peak often referred to as a spectral line, and most spectral lines have a similar appearance.

CDMA's " cell breathing " characteristic, where a terminal on the boundary of two congested cells will be unable to receive a clear signal, can often negate this advantage during peak periods.

Calves born outside the peak calving period often have lower survival rates.

In audio system measurements, telecommunications and other areas where the measurand is a signal that swings above and below a zero value but is not sinusoidal, peak amplitude is often used.

The peak of popularity of the spy film is often considered to be the 1960s when Cold War fears meshed with a desire by audiences to see exciting and suspenseful films.

This phenomenon is called rush hour or peak hour, although the period of high traffic intensity often exceeds one hour.

From this general law, it follows that there is an inverse relationship between the wavelength of the peak of the emission of a black body and its temperature when expressed as a function of wavelength, and this less powerful consequence is often also called Wien's displacement law in many textbooks.

* Light from the Sun: The effective temperature of the Sun is 5778 K. Using Wien's law, it is often concluded that this corresponds to a peak emission at a wavelength of 2. 90 million nm K / 5778 K = 502 nm.

: The calculated peak voltage is often reduced by a safety factor.

In their peak, much of the assassinations of the day were often attributed to the hashashin.

During peak immigration periods several ferries on any given river often competed for pioneer dollars.

The participants in the gold rush were known as " Fifty-Niners " after 1859, the peak year of the rush and often used the motto Pike's Peak or Bust!

Passenger trips are the focus of transport engineering because they often represent the peak of demand on any transportation system.

Despite the critics, the marquise de Pompadour had an undeniable influence on the flourishing of French arts during the reign of Louis XV, a reign that is often considered the peak of French architecture and interior design ( see: Louis XV style ).

The peak force is often greater than the traction limit of the tires, in which case the brake can cause a wheel skid.

During peak travel, often the time of travel can be shortened as the number of passengers is significantly small compared to normal bus services.

The penetration depth of Holmium lasers is < 0. 4 mm, avoiding complications associated with tissue necrosis often found with the deeper penetration and lower peak powers of Nd: YAG lasers used in the 1990s.

The narrative tone is similar to Kafka's, especially in The Trial, wherein individual sentences potentially have multiple meanings, the material often pointedly resonating as stark allegory of phenomenal consciousness and the human condition.

If the ratio a '/ a be sufficiently constant, as is often the case, the above relation reduces to the condition of Airy, i. e. tan w '/ tan w = a constant.

Amok is often described as a culture-bound ( or culture-specific ) syndrome, which is a psychological condition whose manifestation is strongly shaped by cultural factors.

The namesake of the board game, gameboards would seem to be a necessary and sufficient condition of the genre, though card games that do not use a standard deck of cards ( as well as games which use neither cards nor a gameboard ) are often colloquially included.

These buses often need to undergo a degree of vehicle restoration to restore them to their original condition, and will have their livery and other details such as internal notices and rollsigns restored to be authentic to a specific time in the bus's actual history.

Because bipolar disorder can have a high rate of both under-diagnosis and misdiagnosis, it is often difficult for individuals with the condition to receive timely and competent treatment.

Pipelining does, however, introduce the possibility for a situation where the result of the previous operation is needed to complete the next operation ; a condition often termed data dependency conflict.

In coin collecting, the condition of a coin is paramount to its value ; a high-quality example is often worth many times more than a poor example.

This condition is often found in workers that have been exposed to strong chromate solutions in electroplating, tanning and chrome-producing manufacturers.

A necessary and sufficient condition for this inverse function to exist is that the determinant of the Jacobian Matrix, often referred to simply as the Jacobian, should be different from zero.

Radicalism often generates youth movements, while conservatism is a condition found among the mature, who have discovered what it is in life they most value.

*: This number arises so often in numerical linear algebra that it is given a name, the condition number of a matrix.

*: The condition number computed with this norm is generally larger than the condition number computed with square-summable sequences, but it can be evaluated more easily ( and this is often the only measurable condition number, when the problem to solve involves a non-linear algebra, for example when approximating irrational and transcendental functions or numbers with numerical methods.

Organic remains are often found in excellent condition on these water-logged sites.

In the theory there are several other major ways of looking at this notion, and the translation of the condition into other language is often needed.

In these cases, the condition is often unrelated to correction of sodium or electrolyte imbalance.

It is often construed to be a medical condition associated with specific symptoms and signs.

In humans, " disease " is often used more broadly to refer to any condition that causes pain, dysfunction, distress, social problems, or death to the person afflicted, or similar problems for those in contact with the person.

They are often portrayed as children with Williams syndrome ( which was not recognised as a medical condition but some specialist believe that people were enchanted with their character and appearance that they believed to be magical ), usually with fair hair.

These symptoms include hypergraphia, hyperreligiosity, fainting spells, and mutism and often are collectively ascribed to a condition known as Geschwind syndrome.

In a recent study based on Kafka's office writings, Reza Banakar points out that many of Kafka ’ s descriptions of law and legality are often treated as metaphors for things other than law, but also are worthy of examination as a particular concept of law and legality which operates paradoxically as an integral part of the human condition under modernity.

Viscosity often cannot be neglected near solid boundaries because the no-slip condition can generate a thin region of large strain rate ( known as Boundary layer ) which enhances the effect of even a small amount of viscosity, and thus generating vorticity.

The often sympathetic investigations, with their immediacy and unswerving eye for detail, offered unprecedented insights into the condition of the Victorian poor.