Hence I can see no reason to doubt that natural selection might be most effective in giving the proper colour to each kind of grouse, and in keeping that colour, when once acquired, true and constant.

While it is advantageous to have a high-grade base oil in a lubricant, proper selection of the lubricant additives is equally as important.

Using the concept of the impossibility of a gambling system, von Mises defined an infinite sequence of zeros and ones as random if it is not biased by having the frequency stability property i. e. the frequency of zeros goes to 1 / 2 and every sub-sequence we can select from it by a " proper " method of selection is also not biased.

Von Mises never totally formalized his definition of a proper selection rule for sub-sequences, but in 1940 Alonzo Church defined it as any recursive function which having read the first N elements of the sequence decides if it wants to select element number N + 1.

After Hubert Walter's death in July 1205, the selection of a successor was hindered by doubts about what the proper procedure should be, something that commonly happened with elections to Canterbury.

He saw likewise that wealth often checks the proper action of sexual selection.

For proper selection, the cinematographer needs that all lenses be engraved with T-Stop, not f-stop, so that the eventual light loss due to the glass doesn't affect the exposure control when setting it using the usual meters.

With proper patient selection, laparoscopic fundoplication has low complication rates and a quick recovery.

However, long MD simulations are mathematically ill-conditioned, generating cumulative errors in numerical integration that can be minimized with proper selection of algorithms and parameters, but not eliminated entirely.

Given proper combustion chamber design, pre-ignition can generally be eliminated by proper spark plug selection, proper fuel / air mixture adjustment, and periodic cleaning of the combustion chambers.

The canoes were carved from western red cedar ( Thuja plicata ) through an intricate and arduous process requiring great skill, beginning with the selection of the proper tree.

By selection of parallel R and C elements in the proper proportions, the same division ratio can be maintained over a useful range of frequencies.

These different machines may not be comfortable for all users, so proper selection of PAP models may be very important in furthering adherence to therapy.

The mining engineer is responsible for the selection and proper placement of these explosives, in order to maximize efficiency and safety.

An understanding of what equipment will be used for during the life of the tires is required for proper selection.

Careful selection of an antifreeze can enable a wide temperature range in which the mixture remains in the liquid phase, which is critical to efficient heat transfer and the proper functioning of heat exchangers.

Appropriate tissue matching, implant selection, and proper implantation technique, the re-operation rate was 3. 0 % at the 7-year-mark, compared with the re-operation rate of 20 % at the 3-year-mark, as reported by the U. S. Food and Drug Administration.

The outcome of a breast augmentation with fat-graft injections depends upon proper patient selection, preparation, and correct technique for recipient site expansion, and the harvesting, refining, and injecting of the autologous breast-filler fat.

However, once in battle, the player is not able to summon reinforcements, so proper troop selection between levels is a key to success.

Generally, the long-term rate of patient-satisfaction is high, provided that the indications for the liposuction-only technique are abided with proper patient selection.

The success rate of laminectomy depends on the specific reason for the operation, as well as proper patient selection and technical ability of the surgeon.

The proper selection process of the breed began only in the latter 19th century.

Lymph nodes act as filters or traps for foreign particles and are important in the proper functioning of the immune system.

Proven methods to reduce sneezing generally advocate reducing interaction with irritants, such as keeping pets out of the house to avoid animal dander ; ensuring the timely and continuous removal of dirt and dust particles through proper housekeeping ; replacing filters for furnaces and air-handling units ; air filtration devices and humidifiers ; and staying away from industrial and agricultural zones.

The injury may be prevented by wearing eye protection that blocks most of the ultraviolet radiation, such as welding goggles with the proper filters, a welder's helmet, sunglasses rated for sufficient UV protection, or appropriate snow goggles.

Recall that filters on sets are proper filters of the Boolean algebra of its powerset.

In this special case, maximal filters ( i. e. filters that are not strict subsets of any proper filter ) and prime filters ( i. e. filters that with each union of subsets X and Y contain also X or Y ) coincide.

To ensure proper functioning of the filter, the membrane filters are integrity tested post-use and in occasions pre-use.

They provide protection against debris, the heat from welding, and, with the proper filters, the optical radiation resulting from the welding, which can otherwise cause arc eye.

The parameters of the filters are designed by proper choice of the grating parameters.

A Cauchy space is a set X and a collection C of proper filters in the power set P ( X ) such that

SRT however is a complex skill and requires proper training before use underground and needs well-maintained equipment.

Although deprogrammers prepare families for the process, exit counselors tend to work more closely with families and expect them to contribute more to the process ; that is, exit counseling requires that families establish a reasonable and respectful level of communication with their loved one before the exit counseling proper can begin.

As a result, safe handling of explosives and pyrotechnics usually requires proper electrical grounding of the operator.

In its rough crystalline form, a diamond will do none of these things ; it requires proper fashioning and this is called " cut ".

Cooking proper, as opposed to roasting, requires the boiling of water or oil in a receptacle, and was practised at least since the 10th millennium BC with the introduction of pottery.

Hijacking requires experience and good connection, since without proper timing it may look like sloppy dancing.

Note that this description is meant only as an heuristic ; a proper understanding requires a quantum-mechanical description.

Parts of the operating system not fully x86-native run through the Rosetta PowerPC binary translator, which in turn requires the Trusted Platform Module for proper operation.

For coherence theories in general, truth requires a proper fit of elements within a whole system.

Machining requires precautions, as the material will soften and gall if sharp tools and proper cooling methods are not used.

The first stage of boot loaders located on fixed disks and removable drives must fit into the first 446 bytes of the Master Boot Record in order to leave room for the default 64-byte partition table with four partition entries and the two-byte boot signature, which the BIOS requires for a proper boot loader — or even less, when additional features like more than four partition entries ( up to 16 with 16 bytes each ), a disk signature ( 6 bytes ), a disk timestamp ( 6 bytes ), an Advanced Active Partition ( 18 bytes ) or special multi-boot loaders If an active partition is found, the MBR code loads the boot sector code from that partition, known as Volume Boot Record ( VBR ), and executes it.

However, proper instrument operation and interpretation of an OTDR trace still requires special technical training and experience.

It is not purely lipogrammatic, however, because the outlawed letters do appear in the text proper from time to time ( the characters being penalized with banishment for their use ) and when the plot requires a search for pangram sentences, all twenty-six letters are obviously in use.

However, proper use of programmable controllers requires understanding the limitations of the execution order of rungs.

Achieving the proper slope in hilly terrain usually requires the excavation of sidehill trail.

Weatherization is distinct from building insulation, although building insulation requires weatherization for proper functioning.

When the body temperature reaches about 40 ° C, or if the affected person is unconscious or showing signs of confusion, hyperthermia is considered a medical emergency that requires treatment in a proper medical facility.

Aspirin requires an acidic environment for proper absorption, and the basic environment diminishes aspirin absorption in the case of an overdose.

The use of Chinese characters in Korea is becoming increasingly rare altogether, although idiosyncratic use of Chinese characters in proper names requires knowledge ( and therefore availability ) of many more characters.

To enforce this restriction and to provide counseling and education on proper use, an agreement between the manufacturer and the FDA requires that these drugs are stored behind the pharmacy counter.

The polar hydrogens are usually retained in the model, because proper treatment of hydrogen bonds requires a reasonably accurate description of the directionality and the electrostatic interactions between the donor and acceptor groups.

For proper functioning of these experiments, the payload requires an ORU ( Orbital Replacement Unit ) which consists of the EPS ( Electrical Power System ), CT ( Communications & Tracking ) and the TCS ( Thermal Control System ).

It is believed that this phase requires much attention to properly encode the information at hand, and thus a distractor task does not allow proper input and reduces the amount of information learned.

Like paint, wallpaper requires proper surface preparation before application.

In its most restrictive meaning, anacoluthon requires that the introductory elements of a sentence lack a proper object or complement.