How to use Compression in a sentence
If one end is sharply pressed in, a compression can be seen running along the spring.
There are three principal parts, a refrigerator or evaporator, a compression pump, and a condenser.
In a compression machine the refrigerator is usually a series of iron or steel coils surrounded by the air.
With dry compression, vapour alone is drawn into the compressor, and the temperature rises to as much as 180 or 200 degrees.
Wet compression theoretically is not quite so efficient as dry compression, but it possesses practical advantages in keeping the working parts of the compressor cool, and it also greatly facilitates the regulation of the liquid, and ensures the full duty of the machine being continuously performed.Advertisement
We first evaluate a number of compression algorithms for use in the driver.
Depending on the grammar formalism used, varying degrees of compression are achieved.
The main aim of surgery is to relieve compression of trapped nerves.
Shock Absorber; The WP shock is connected directly to the swing arm and features adjustable rebound and low and high speed compression damping.
A late effect is the compression of the gravid uterus.Advertisement
And what is true for the extreme points is true for the half periods of which they are the middle points; that is, heat given during the compression half aids the vibration, and during the extension half damps it.
Long-term therapy begins by stopping any treatments for other diagnoses such as asthma, and treating any underlying conditions, such as brainstem compression or GERD, affecting the disorder.
The compression of ammonia is sometimes carried out on what is known as the Linde or " vet " system, and sometimes on the " dry " system.
When wet compression is used the regulating valve is opened to such an extent that a little more liquid is passed than can be evaporated in the refrigerator.
This liquid enters the compressor with the vapour, and is evaporated there, the heat taken up preventing the rise in temperature during compression which would otherwise take place.Advertisement
With the same temperature range, however, the same amount of heat has to be acquired in both cases, though from the nature of the process the actual amount of heat demanded from the steam is much greater in the absorption system than in the compression.
In the absorption machine the cooling water has to take up about twice as much heat as in the compression system, owing to the ammonia being twice liquefied - namely, once in the absorber and once in the condenser.
To get significantly higher compression ratios, a lossy compression method, such as JPEG, is required.
The use of alloy brings thoughts of benefits from being able to run higher compression ratios.
Compression bandages crepe, cotton crepe and cotton, polyamide, and elastane bandaging all provide support without exerting undue pressure.Advertisement
My other interests include novel neural network architectures, the compression of chess endgames databases and the computer analysis of music.
Compression standards are in a state of continual change so anything written today will be overtaken by events.
Combined antibacterial effect and capacity to absorb exudate even under high compression.
Over time, the compression helped to reduce local edema, re-shape his leg and reduce wound exudate.
For details on how to make this type of connection see compression fittings in the plumbing section.Advertisement
Yet only 7% would consider wearing compression hosiery on an everyday basis.
Support hosiery and graduated compression support hosiery should not be confused.
Activa Compression hosiery is virtually indistinguishable from ordinary hosiery.
The first covers the application of homogeneous charge compression ignition (HCCI) to the patented Dual-FuelTM system.
This combines traditional spark ignition with the sort of compression ignition a diesel engine uses.
Several conditions can cause ileus such as peritonitis, septicaemia or recent cord compression.
Conventional storage solutions include liquefaction or compression, however there are energy efficiency and major safety concerns associated with both these options.
Understand how to apply topical medicaments, compression bandages etc. 11.
The Elbow Cryo/Cuff combines the therapeutic benefits of controlled compression to minimize hemarthrosis and swelling, and cold to minimize hemarthrosis and swelling, and cold to minimize pain.
Skimming the head also increases the compression ratio and to avoid detonation with low octane fuel a low compression piston is used.
The catalyst engine uses high compression ratio pistons designed specifically for the 4.2 power unit to optimize fuel economy.
Specimens are loaded in compression between flat, parallel hardened steel platens with recesses to reduce lateral movement of the specimen.
Transmission of the load from load cell to specimen was by means of compression platens and a four point bending jig with no articulation.
Endoscopic orbital decompression may be used to treat disfiguring proptosis or sight threatening optic nerve compression in patients with thyroid eye disease.
Compression hosiery has been clinically proven to aid venous return and to help prevent leg ulcer recurrence.
Most dealers leave the combustion area alone then retard the ignition more or over jet to compensate for the over high compression.
In the presence of neurological symptoms, an MRI scan is useful to rule out spinal cord compression or spinal canal stenosis.
They are obviously very flat, but do notice that the compression is different to that of a freshwater stingray, for example.
Are you uncertain about the benefits of graduated compression stockings.
Graded compression stockings exert a greater pressure at the ankle than at the thigh.
Graduated compression stockings in the prevention of postoperative venous thromboembolism.
Cylinders - buckling under compression, bending, torsion with internal pressure, collapse under external pressure.
On arrival, lower limb compression ultrasonography of the deep veins was performed.
In 1844 and 1845 Joule published a series of researches on the compression and expansion of air.
As AB again moves from CD towards EF another compression or push is sent out, as it returns from EF towards CD another extension or pull, and so on.
The dotted curve represents the distribution of compression by height above the axis, and of extension by depth below it.
Partly to counteract any tendency to buckling under compression and partly for convenience in assembling a great mass of plates, the top and bottom were made cellular, the cells being just large enough to permit passage for painting.
When such a rib is erected on centering without initial stress, the subsequent compression of the arch under its weight inflicts a bending stress and excess of compression in the upper member at the crown.
For a bar subjected to alternate tension and compression of equal amount, A= 2 fmax.
Frames used as bridge trusses should never be designed so that the elongation or compression of one member can elongate or compress any other member.
Passing to the point Xefa we find two known forces, the load XA acting downwards, and a push from the strut XE, which, being in compression, must push at both ends, as indicated by the arrow, fig.
Fiber - the muskrats - is a North American aquatic type (see Muskrat), characterized by the compression of the tail.
Stirling substituted for the two stages of adiabatic expansion and compression the passage of the air to and fro through a "regenerator," in which the air was alternately cooled by storing its heat in the material of the regenerator and reheated by picking the stored heat up again on the return journey.
The MPEG codec performs compression and decompression on raw raster scanned YCbCr (also known as digital YUV) files.
The retarding force is caused by the compression of the air in the shock wave.
Aging and creep of sands have been measured in triaxial compression and extension to identify the causes of increasing pile shaft capacity with time.
Uniaxial compression is the only test in which it is possible to measure Poisson 's ratio with any degree of simplicity.
This current FAQ offers a fuller explanation of wavelet compression, whilst still trying to avoid using too much hard maths.
Fossil fuels require thousands of years of compression to form into fuel.
Because so many of the shirts are designed to be compression wear, the size can run a little small.
Alternately, you may wish to use cleaner-sounding effects pedals such as chorus, delay or compression.
Built with foam padding to protect the hip and thigh joints and the tailbone, they also include compression that supports the hamstrings and quads.
A good pair of men's compression shorts are crucial for the athlete who's serious about his performance in any weather.
Compression shorts will keep you warm, in part because they are designed to keep you dry.
Whatever your sport, a good pair of compression shorts can make a real difference.
Some of the most popular men's compression shorts on the market are by Under Armour, who have become famous for their high-quality performance wear.
Under Armour also makes compression shorts for specific sports such as hockey, where you need something that keeps you warm and will also help protect you against impacts.
The customer reviews on Under Armour's site rate all the compression shorts very high.
Champion's Double Dry compression shorts feature a system to efficiently wick away moisture and control any build-up.
At One Tri, you can get the 2XU Compression shorts made of a circular knit fabric that offers a graduated compression fit to optimize blood flow and increase flexibility.
While most men's compression shorts will say they are machine washable, you will enjoy the best performance for the longest amount of time if you wash them in cold water on a gentle cycle and dry them flat.
If you are wondering what you can do to relieve your tired, swollen legs, you may need some compression socks, or men's support socks, as they are commonly called.
By applying graduated pressure on specific areas of the leg and foot, compression socks help alleviate pain and prevent vein diseases.
The compression level of such footwear is measured in mmHg, or millimeters of mercury, with the letters Hg being the chemical symbol for mercury.
Your healthcare provider may need to give you a prescription if you must buy hose with high compression levels.
Most support socks for men are manufactured from nylon or rayon, which is woven with other elastic fibers to provide a predetermined amount of compression.
It takes a man’s movements into consideration and uses compression fabrics that are designed for specific body parts engaged during sports.
It is a latex shaper with a compression waist cincher, fixed straps and a scoop back.
Among them is the Hide & Sleek Hi-Rise Panty with Thong Back, which slims the midsection with its double-layer compression mechanism.
These are massaging pantyhose offering targeted compression to improve circulation and reduce the chance of swelling.
It has targeted compression and is designed to shape your tummy, thighs and rear.
There are even "arm girdles" available for women who want to apply some compression to flabby upper arms!
Plus size compression stockings are worn to help reduce swelling and pain in the legs due to poor circulation.
It is extremely important that compression stockings fit properly for them to accomplish their purpose.
If you decide to purchase your plus size compression stockings online, follow the measuring directions precisely.
They have space limitations - every disk in a game box costs money - but thanks to compression and an installation process, they don't have to fit it all in executable form on the game disk like console games do.
However, they also have episodes when they develop weakness and problems with sensation after compression of certain pressure points such as at the elbows or knee.
Other abnormal locations may also lead to compression and impaired flow.
Direct compression of the nerve also causes paresthesias.
Compression can be short-lived, as when a heavy backpack compresses the nerves passing across the shoulders.
Chronic nerve compression occurs in entrapment syndromes.
Chronic nerve root compression, or radiculopathy, can occur in disk disease or spinal arthritis.
If a child receives a soft tissue injury, such as a strain or sprain, or a bone injury, the best immediate treatment is ice, compression, elevation of the injury, and rest.
Rest, elevation of the affected part, and compression with a bandage will also retard the accumulation of blood.
Because it decreases joint compression, it can lessen the pain caused by scoliosis or surgery.
It is used to relieve cord compression, reduce fetal distress caused by meconium staining, and as a correction of decreased amniotic fluid.
This compression results in weakness or paralysis that normally occurs on one side of the face only.
Mouth injuries can result in compression of the airway, which interrupts breathing and can be life-threatening.
Relatively common anatomic procedures are decompression surgeries, such as repairing a herniated disk in the lower back or relieving the nerve compression related to carpal tunnel syndrome.
For a child aged one to eight years, the compression rate is the same-five compressions and one rescue breath.
Chest compressions are delivered by placing the heel of one hand over the lower half of the sternum and depressing about one to one and one half inches per compression.
The chest is compressed about one and one half to two inches per compression.
The compression rate is 80 to 100 per minute delivered in cycles of 15 compressions followed by two rescue breaths.
The mother reclines with a slight pelvic tilt to prevent compression of the large blood vessels by the pregnant uterus.
Individuals who develop the adult form of the disease have normal life spans, although they experience more bone fractures and complications related to compression of cranial nerves.
Nerve compression can result in facial paralysis, deafness, or blindness.
At the time of injury, treatment is focused on stabilizing the spine and relieving cord compression.
For example, the site's Compression category is chock full of suits and accessories that are designed to keep you warm so that you can enjoy all of your cold weather sport activities.
For those who are interested in learning more about the benefits of a compression suit, there is also a section dedicated to supplying this highly specialized information.
Triangle tops are incredibly flattering, but are made all the more so when they feature, as this one does, mesh compression panels to help flatten he tummy.
The tankini is made with compression fabric for high performance, combined with the cooling fabric to maintain a comfortable temperature.
It provides the swimmer with extra support and coverage and enhances muscle compression.
Sportsman Guide offers compression pants in camouflage that look just like trendy leggings.
Land's End offers hoodies, skorts, capris, compression tights, jackets, yoga pants, and more in petite sizes.
The votives are compression molded and made of clean burning paraffin wax.
If the crystalline structure is subjected to unusual compression as the gems are forming, a creamy yellow hue the same as fine champagne can form.
This backpack offers a large front pocket, has inner mesh pockets and features a front "bungee compression system".
Simply put, Broadband Internet connection, combined with better compression technologies, allow for more speed and higher quality.
Stretching exercises are often promoted when recovering from an injury along with rest, ice, compression and keeping the injured limb elevated.
It works the quadriceps in conjunction with the gluteal muscles, and produces compression force, which are safer for the knee than shearing forces.
Closed chain leg toning exercises can contribute to joint compression, which may improve the integrity of the joint.
You have probably heard of the RICE method of injury recovery - Rest, Ice, Compression and Elevation.
Many sports medicine doctors actually recommend MICE, or Movement, Ice, Compression and Elevation.
Often, sciatica pain comes as a result of a herniated disc, but any compression or irritation of the sciatic nerve can cause radiating pain in the lower back, buttocks, and legs.
You can try local stores that carry compression garments, but it's understandable if you'd rather shop online.
Underworks carries body shapers such as compression shirts, chest binders and body shirts.
This is a compression, pullover bra, but it really does the job.
In 1793, the German physician, Samuel Thomas von Sommerring warned women against corsets for their presumed compression of the chest and abdomen.
Tight constriction of the chest and abdomen may be presumed to have compression effects primarily on the organs in these locations.
Compression of the lower rib cage and the lungs by tight corsets makes it difficult to take a deep enough breath to expand the lungs completely.
They claimed this would cause symptoms such as indigestion from compression of stomach and constipation from compression of bowels.
There is evidence that tight corsets and other constricting garments cause compression symptoms.
Even with modern garments, women who lace their corsets tightly to achieve a small waist have an increased risk for compression symptoms.
You can also layer this with a slim compression tank or skirt over to make it even smoother.
You will love the new ones made from a single "tube" of compression fabric.
Moreover, the Spanx compression fabric firms your tummy while it wicks away moisture; perfect for a long eight-hour work day!
They offer more compression at the bottom than at the top in order to efficiently push the blood upward.
Support Plus offers medical support hos, which means you get more graduated support and compression than the average brands.
Body shapers take some getting used to, especially when they offer firm control, and to avoid discomfort at an important event, it's best to get your body used to the compression that firm control body shapers provide.
Front closure types are the best for compression sports bras because it makes them easier to get on and off.
Anyone who has wrestled to get a sports bra off after working out knows that front closures are the best for compression sports bras.
Breast size - If you are larger breasted, no matter what level of activity, a compression sports bra may be best to avoid damage to breast tissue and ligaments as well as to help prevent back pain.
Look for garter belts at at CompressionStore.com, which stocks garter belts for men who need to wear compression stockings for health reasons.
Men can start shopping at Nu Life Medical, which has a good range of compression garments.
You will be relieved to know that if your hernia is in the groin, you may only need a small compression belt that can wrap around your briefs, rather than a whole garment.
For abdominal hernias, you will have to use a compression device that wraps around the torso, but even this will not be too obvious under clothes.
Medical compression garments are specially made, so they can be on the pricier side.
Just as with other sports bras, high impact bras come in two different designs, compression and encapsulation.
Compression sports bras are the most common types of sports bras made for high impact activities.
Both encapsulation and compression sports bras provide high levels of protection during physical activity.
The Enell brand bras they sell are both compression and encapsulation bras in one for added support, protection and comfort.
More severe side effects include damage to the rib cage and compression of the internal organs.
Restless leg syndrome, deep vein thrombosis or any circulatory problem is alleviated by compression legwear.
The Juno offers encapsulation and compression features, as well as a stylish fit that is snug yet comfortable.
Two important words when it comes to sports bras are compression and encapsulation.
According to major sportswear retailer REI, sports bras that combine compression and encapsulation are most suitable for C and D cup wearers.
Although men's pantyhose are predominantly worn by transvestites, shemales and fetishists, they are also used for compression wear and even those looking to increase lower body stamina and performance ability.
The compression improves circulation and blood flow, as well as offering light definition so that you look even better.
They also offer less intense shapewear such as compression T-shirts.
Even men in excellent condition like to wear compression shirts as they can offer support and make everything look just that much tighter and slimmer.
Compression Gear offers a range of compression wear designed predominately for performance, although they can also be worn as everyday underwear.
One aspect of compression wear that appeals to many of the men who use it is that you can't tell it's actually doing any shaping.
Best of all, calling it "compression wear" instead of "shapewear" appeals more to men concerned about being called out for vanity.
For those who would like to look ripped but don't have the time for the workouts involved, a compression tee is a great compromise.
Some women might have a nice laugh watching a man work his way into a compression tee for the first time, knowing that he'll always understand when they complain about control-top pantyhose after that.
This bra provides the right amount of breast compression without being too tight in the band.
They offer various levels of compression depending upon your needs, and come in knee high, thigh high, and pantyhose styles.
Healthy Legs has the 230 Cotton Series available in firm and extra firm compression.
For Your Legs divides the selection of hose into men's vs. women's, then compression levels, and further into sections for knee highs, thigh highs, pantyhose, and maternity styles for women, and knee highs and thigh highs for men.
To find what you're looking for, you'll first need to choose the compression level you need.
Compression bodysuits, however, are descended from the relatively obscure men's corset of the Victorian era, which did wonders for sucking in an expanding midsection.
Make Me Heal offers several compression style options for men who want to have a sleek look underneath their clothes or who need extra support after surgery.
Check out the compression shaper bodysuit or the compression slimming tanksuit for just a few options.
You still have that beautiful ultra-sheer look, but now you can add graduated compression in the ankle to keep circulation flowing back up your legs, which makes them look better too.
Much the same way as women wear compression garments to help with circulation and other medical problems, this undershirt can help if you have lower back problems.
Compression bras hold breasts against the chest to minimize motion.
High impact, like running or kickboxing, requires the most compression and support, incorporating compression and encapsulation sports bras.
Medium impact, like biking or speed walking, can usually be done wearing a compression bra, though some women may prefer an encapsulation.
Keep in mind that the encapsulated styles with cups will be more versatile overall than compression styles, and always try moving around in the bra before you purchase it if you have the opportunity.
The most simple, by Maidenform, is just a minimalist tube made of microfiber with an elastic under-bust band, much like a camisole with a built-in shelf bra, only with better compression support.
Women's bodysuits, usually made of some kind of compression fabric, are similar to one-piece bathing suits, and much like many one-piece suits that are available today, can be worn in a variety of ways.
Two words that are frequently used in conjunction with sports bras are compression and encapsulation.
This compression tee can be paired with the ACE bandage solution mentioned above.
If they simply direct you to discover the best options online, then you can consider a custom-made garment, compression tee, or an ACE bandage remedy.
Body Glove carries compression garments to aid in light support.
Compression bras keep your breasts pressed flat against your chest.
Large-breasted women may experience chest smashing when wearing compression bras.
Women with C cup sizes and above may find these garments feel less constrictive than compression bras.
While they are more comfortable, encapsulation bras do not control bounce quite as much as a compression bra.
The compression method they use, called LAME, is considered to create the highest quality MP3 clips.
It was at The Frauenhofer Institute in the mid-80's when Brandenburg and other technical minds were experimenting with audio compression.
This form of audio compression provides the lowest bit-rate possible without great sacrifice in the sound quality.
The sounds within Star Trek effects are "electronic" in quality - with both high and low blips and beeps that can often get stripped out during the MP3 compression.
When selecting the youth football jersey, specifically look for a compression jersey, which ensures that padding stays in place.
A JPEG file is an image file with a particular standard of image compression.
Freeware Utilities - The programs link has items such as WinZip, a compression utility, that are either free or shareware.
The Portable Network Graphic (PNG) is the newest image format to utilize Lossless ZIP compression.
The back pressure is supposed to be uniform, and there is no compression.
This mixture dissolves in petroleum, escaping when the oil is stored, and conversely it invariably carries a certain amount of water and oil, which is deposited on compression.
At L there is also displacement towards B and again compression.
At M, as at J, there is neither extension nor compression.
The immense extension of railways since 1830 has involved the construction of an enormous number of bridges, and most of these are girder bridges, in which about half the superstructure is in tension and half in compression.
Altogether this western extremity of the Kuen-lun system is a very rugged mountainous region, a consequence partly of the intricacy of the flanking ranges and spurs, partly of the powerful lateral compression to which they have been subjected, and partly of the great and abrupt differences in vertical elevation between the crests of the ranges and the bottoms of the deep, narrow, rugged glens between them.
Pressure will also tend to produce an expansion of the rock mass in a direction (usually nearly vertical) at right angles to the compression, for such rocks as slates are distinctly plastic in great masses.
Both bear their round or ovoid male catkins at the ends of the slender terminal branchlets; the ovoid cones, either terminal or on short lateral twigs, have thick woody scales dilated at the extremity, with a broad disk depressed in the centre and usually furnished with a short spine; at the base of the scales are from three to seven ovules, which become reversed or partially so by compression, ripening into small angular seed with a narrow wing-like expansion.
The mountain-making compression of the, 4pialaheavy series of Palaeozoic strata has here produced a chians.
In certain parts of the plateau there are narrow anticlinal uplifts, an outlying effect of mountain-making compression; here a ridge rises if the exposed strata are resistant, as in Chestnut ridge of western Pennsylvania; but here a valley is excavated if the exposed strata are weak, as in Sequatchie Valley, a long narrow trough which cuts off a strip of the plateau from its greater body in Tennessee.
Campbell'S Poetry, In Spite Of A Certain Lack Of Compression, Is Full Of Dramatic Vigour; Roberts Has Put Some Of His Best Work Into Sonnets And Short Lyrics, While Carman Has Been Very Tsuccessful With The Ballad, The Untrammelled Swing And Sweep Of Which He Has Finely Caught; The Simplicity And Severity Of Cameron'S Style Won The Commendation Of Even So Exacting A Critic As Matthew Arnold.
The Lamellibranchia are mainly characterized by the rudimentary condition of the head, and the retention of the primitive bilateral symmetry, the latter feature being accentuated by the lateral compression of the body and the development of the shell as two bilaterally symmetrical plates or valves covering each one side of the animal.
Concrete by itself, though strong in compression, can offer but little resistance to tensile and shearing stresses, and as these stresses always occur in beams the problem arises how best to arrange the steel so as to assist the concrete in bearing them.
But as these tension and compression bars are`.
The (approximately pure) metallic sponge obtained is washed, made compact by compression, fused in a porcelain crucible in an atmosphere of hydrogen, and cast into sticks.
The former, from the Tertiary period even to the present day, has been -a region of compression; the latter, since the Carboniferous period at least, has been a region of equilibrium or of tension.
To some extent this objection may be reduced by using the air in a state of compression, and therefore of greater density, throughout its operation.
Cold air was compressed by a pump into a receiver, where it was kept cool during compression and from which it passed through a regenerator into the working cylinder.
The elastic impalpable stuff of the spirit-body is apparently capable of compression or expansion, just as Athena can transform herself into a bird.
The pain is due to stretching of the nerve fibrils or compression of them by the turgid vessels in the swollen tissues.
In a similar way the absorption of light in the coloured gas chlorine is found to be unaltered if the thickness is reduced by compression, because the density is increased in the same ratio that the thickness is reduced.
This is not strictly the case, however, for such gases and vapours as exhibit well-defined bands of absorption in the spectrum, as these bands are altered in character by compression.
But until the clouds rise above the hill there is an obvious countervailing tendency to compression, and in steep slopes this may reduce or entirely prevent precipitation until the summit is reached, when a fall of pressure with commotion must occur.
Unless such faces are so far below the surface of the puddle, and so related to the lower parts of the trench, that no tension, and consequent tendency to separation of the puddle from the rock, can possibly take place, and unless abundant time is given, before the reservoir is charged, for the settlement and compression of the puddle to be completed, leakage with disastrous results may occur.
Arrow heads at the ends of an axis of an ellipse indicate tension as distinct from compression, and the semi-axes in magnitude and direction represent the principal stresses.
Tension is indicated by broken lines and compression by full lines.
But no care in construction can prevent the compression of the mass as the superincumbent weight comes upon it.
These rods pass through holes in the front and back plates of the box, and are furnished with spiral springs, which (when the rods are forced back by hand) are in compression between the back plate of the box and shoulders on the rods.
The thorough saturation of the narrow space with aqueous vapour, and the presence of drain water in the cutting, were probably their chief preservatives - assisted by the high even temperature always found in the deeper headings of coal mines, and by the enormous compression of the confined air.
Geographical latitude, which is used in mapping, is based on the supposition that the earth is an elliptic spheroid of known compression, and is the angle which the normal to this spheroid makes with the equator.
Continuously working presses (compression by a conical screw) have been patented, but hitherto they have not been found practicable.
The compressor draws in air from the room and compresses it, the work expended in compression being almost entirely converted into heat.
In the Bell-Coleman machine the air was cooled during compression by means of an injection of water, and further by being brought into contact with a shower of water.
In such compressed-air machines as are now made there is no injection of water during compression, and the compressed air is cooled in a surface cooler, not by actual mixture with a shower of cold water.
The pistons of the compression and expansion cylinders are connected to the same crankshaft, and the difference between the power expended in compression and that restored in expansion, plus the friction of the machine, is supplied by means of a steam engine coupled to the crankshaft, or by any other source of power.
This machine, though never used commercially, is the parent of all modern compression machines.
He dealt with the coefficient of performance as a common basis of comparison for all machines, and showed that the compression vapour machine more nearly reached the theoretic maximum than any other (Bayerisches Industrie and Gewerbeblatt, 1870 and 1871).
Linde also examined the physical properties of various liquids, and, after making trials with methylic ether in 1872, built his first ammonia compression machine in 1873.
Since then the ammonia compression machine has been most widely adopted, though the carbonic acid machine, also compression, which was first made in 1880 from Linde's designs, is now used to a considerable extent, especially on board ship.
A diagram of a vapour compression machine is shown in fig.
As heat is both taken in and discharged at constant temperature during the change in physical state of the agent, a vapour compression machine must approach the ideal much more nearly than a compressed-air machine, in which there is no such change.
A vapour compression machine does not, however, work precisely in the reversed Carnot cycle, inasmuch as the fall in temperature between the condenser and the refrigerator is not produced, nor is it attempted to be produced, by the adiabatic expansion of the agent, but results from the evaporation of a portion of the liquid itself.
Schroeter and others with compression machines using sulphur dioxide and ammonia.
The process is continuous, and is identical with that of the compression machine, with the exception of the return from the temperature T 1 to the temperature T2, which is brought about by the direct application of heat instead of by means of mechanical compression.
The absorption machine is not so economical as the compression; but an actual comparison between the two systems is difficult to make.
With liquid machines of the compression and absorption system, the rooms are either cooled by means of cold pipes or surfaces placed in them, or by a circulation of air cooled in an apparatus separated from the rooms. The cold pipes may be direct-expansion pipes in which the liquid evaporates, or they may be pipes or walls through which circulates an uncongealable brine previously cooled to the desired temperature.
The compression which formed the anticline will have been accompanied by flexural slip which would have " planed off " any bottom structures.
How do I calculate the compression of a cylinder between flat parallel anvils?
Most DVDs exhibit few visible MPEG compression artifacts on a properly configured system.
Both groups had a tubular bandage applied over the compression bandage to keep it in place.
Therefore, an elastic compression bandage should maintain the sub bandage pressure over a given period.
A compression bandage may be helpful well beyond the period of acute swelling.
Compression can also occur if the cord is between the baby's head and the mother's pelvic bone before or during delivery.
In some cases compression of blood vessels may also occur producing signs of poor peripheral circulation.
How about if you process a raw digitized file with a compression codec?
Often used in video compression algorithms that exploit the temporal coherence of image sequences.
Dolby Digital is a multi-channel digital audio using lossy compression.
However, BTPC lossless compression of color graphics is significantly more costly than GIF coding with a color palette.
Consider a metal in uniaxial compression where plastic strain only takes place in the 1-2 plane.
It can usefully be applied to cases of suspected spinal cord compression which often results from spinal tumors or from slipped disks.
Converting between TIFF and JPEG Digitizing microfiche and microfilm The PNG file format What is wavelet compression?
The color specifications passed to the gamut compression procedure have already been adjusted to the Screen White Point.
The Contreet Foam dressing was replaced together with the modified four-layer compression therapy.
It is compressed using UNIX TAR archiving and Gzip compression.
Since I raised the compression ratio not only can my P-type go faster but I am also inclined to drive it faster.
Most clients will need to be shown how to apply compression hosiery.
The sturdy shock cord compression lacing allows you to reduce the pack volume so it still carries the load tightly for shorter trips.
The loadings covered are either uniaxial in-plane compression alone or with a transverse in-plane tensile or compressive load.
The movement also caused an upthrust offshore, in the compression zone, to form a lagoon.
You may, ofcourse, also use WinZip, or any other compression utility to extract the contents of the file.
Colding, who in 1843 presented to the Royal Society of Copenhagen a paper entitled "Theses concerning Force," which clearly stated the "principle of the perpetuity of energy," and who also performed a series of experiments for the purpose of determining the heat developed by the compression of various bodies, which entitle him to be mentioned among the founders of the modern theory of energy, we come to Dr James Prescott Joule of Manchester, to whom we are indebted more than to any other for the establishment of the principle of the conservation of energy on the broad basis on which it has since stood.
His removal of the considerable discrepancy between the actual and Newtonian velocities of sound,' by taking into account the increase of elasticity due to the heat of compression, would alone have sufficed to illustrate a lesser name.
Though most nerve compression in Bell's palsy is mild and temporary for children, the primary goal is to assure that no further damage to the seventh cranial nerve occurs.
That number tells you how much compression is around the ankle.
Though it sounds painful, the compression sports bra is one of the most common sports bras worn by active women.
This bra both looks and wears well due to it's compression and encapsulation features.
Reminiscent of Elizabeth Taylor's famed full slip in Cat on a Hot Tin Roof, this look is one that features a double layer of compression material to help keep your body looking smooth and in shape under your clothing.
The term Pv/V added up for a complete wave vanishes, for P/V is constant and Zv=o, since on the whole the compression equals the extension.
For compression members the shearing area of rivets in butt-joints was made half the useful section of plate in compression.
The value of H is equal to the maximum tension on the bottom flange, or compression on the top flange, of a girder of equal span, equally and similarly loaded, and having a depth equal to the dip of the suspension bridge.
The device employed for this purpose is known as the water-packer, and consists in its simplest form of an india-rubber ring, which is applied between the tubing and the well-casing, so that upon compression it makes a tight joint.
The consequence is that the compression travels rather faster, and the extension rather slower, than at the speed found above.
Or we may take it as representing the pressure - excess over the normal pressure in compression, defect from it in extension.
The concrete not only affords much of the strength to resist compression, but effectively protects the steel from corrosion.
The specific gravity of cast gold varies from 18.29 to 19.37, and by compression between dies the specific gravity may be raised from 19.37 to 19.41; by annealing, however, the previous density is to some extent recovered, as it is then found to be 19.40.
From his views on centrifugal force he deduced the oblate figure of the earth, estimating its compression, however, at little more than one-half its actual amount.
Then dp/dz=kdp/dz = P, = Poe ik, p - po= kpo(ez Ik -1); (16) and if the liquid was incompressible, the depth at pressure p would be (p - po) 1po, so that the lowering of the surface due to compression is ke h I k -k -z= 1z 2 /k, when k is large.
The principal differences are the complication of the ciliated band, the absence of the excretory organ, the great lateral compression of the body, the possession of a pair of shells protecting the sides, the presence of an organ known as the "pyriform organ," and the occurrence of a sucker in a position corresponding with the depression seen between (m) and (a) in fig.
For masonry, brick or concrete the arch subjected throughout to compression is the most natural form.
The function of the flanges is to resist a horizontal tension and compression distributed practically uniformly on their cross sections.
Hard steel, if used at all, is used only for compression members, in which there is less risk of flaws extending than in tension members.
If A t A, are the cross sections of the tension and compression flanges or chords, and h the distance between their mass centres, then on the assumption that they resist all the direct horizontal forces the total stress on each flange is Ht=H,=M/h and the intensity of stress of tension or compression is f t = M/Ath, f c = M/Ach.
It is obvious that the nodes are alternately in compression and extension, or vice versa, and that for 4X on each side of a node the motion is either to it on both sides or from it on both sides.
The suspension bridge dispenses with the compression member required in girders and with a good deal of the stiffening required in metal arches.
In both England and America in early braced bridges cast iron, generally in the form of tubes circular or octagonal in section, was used for compression members, and wrought iron for the tension members.
Ewing has also examined the effects produced by longitudinal compression upon the susceptibility and retentiveness of nickel, and found, as was to be expected, that both were greatly increased by pressure.
In the iron cylinder and ovoid, which expanded when magnetized, compression caused a diminution of magnetization; in the nickel rod, which contracted when magnetized, pressure was attended by an increase of magnetization.
Jupiter was measured on eleven nights in the months of June and July 1794; from these measures Schur derives the values 35"39 and 37".94 for the polar and equatorial diameter respectively, at mean distance, corresponding with a compression 1/14.44.
The fact that a solid body in its natural state is capable both of compression and of dilatation indicates that the molecules of the body must not be supposed to be fixed rigidly in position relative to one another; the further fact that a motion of either compression or of dilatation is opposed by forces which are brought into play in the interior of the solid suggests that the position of rest is one in which the molecules are in stable equilibrium under their mutual forces.
Whilst alcohol is applied in motor engines in a similar manner to petrol, its vapour mixed with a proper proportion of air being drawn into the cylinder where it is compressed and ignited, it cannot be used with maximum efficiency by itself in engines such as are fitted to modern motors because it requires a higher degree of compression than petrol engines are usually designed to stand, and also because, unless special arrangements are made, a motor engine will not start readily from the cold with alcohol alone.
The compression members are of timber, except the struts and bottom chord panels next the river piers, which are of steel.
Nearly related is the extinct family Lophiodontidae (inclusive of the American Helaletidae), in which both the upper and lower first premolar may be absent, while the upper molars present a more rhinoceros-like form, owing to the lateral compression and consequent lengthening of the outer columns, of which the hinder is bent somewhat inwards and is more or less concave externally, thus forming a more complete outer wall.
The opposite axes are connected with springs which are kept in compression by tension of the rope in drawing but come into action when the pull is released, the side axes then biting into wooden guides or gripping those of steel bars or ropes.
The figure shows that when the curve of displacement slopes down in the direction of propagation there is compression, and the pressure is above the normal, and that when it slopes up there is extension, and the pressure is below the normal.
Since the forces called into play by an extension or compression of the material are proportional to the cross-section, it follows that if we consider any case and then another case in which, with the same longitudinal disturbance, the cross-section is doubled, the force in the second case is doubled as well as the mass to be moved.
In China his mention of Canton by the name of Censcolam or Censcolam (Chin-Kalan), and his descriptions of the custom of fishing with tame cormorants, of the habit of letting the finger-nails grow extravagantly, and of the compression of women's feet, are peculiar to him among the travellers of that age; Marco Polo omits them all.
When the value of dyldx is not very small E is no longer constant, but is rather greater in compression and rather less in extension than -yP. This can be seen by considering that the relation between p and is given by a curve and not by a straight line.
Bridges may be classed as arched bridges, in which the principal members are in compression; suspension bridges, in which the principal members are in tension; and girder bridges, in which half the components of the principal members are in compression and half in tension.
In such rolling operations the girder is subjected to straining actions different from those which it is intended to resist, and parts intended for tension may be in compression; hence it may need to be stiffened by timber during rolling.
The brine is cooled in a tank filled with spiral pipes, in which anhydrous ammonia, previously liquefied by compression, is vaporized in vacuo at the atmospheric temperature by the sensible heat of the returncurrent of brine, whose temperature has been slightly raised in its passage through the circulating tubes.
For practical purposes it is accurate enough to consider the booms or chords as carrying exclusively the horizontal tension and compression and the web as resisting the whole of the vertical and, in a plate web, the equal horizontal shearing forces.
In the Greek school at Alexandria, which flourished under the auspices of the Ptolemies, the first attempts were made at the construction of hydraulic machinery, and about 120 B.C. the fountain of compression, the siphon, and the forcing-pump were invented by Ctesibius and Hero.
Thus a push or a compression of the X air is transmitted onwards in the direction OX.