87 Sentences With "become clogged" | Random Sentence Generator

Without such periodic purges, the filters become clogged and ineffective.

"Facebook's vast, personalized sewer system has become clogged with toxic fatbergs" https://t.

The government says the extinguishers can become clogged and fail to spray when needed.

The faulty extinguishers are equipped with plastic handles and push-buttons and can become clogged.

The streets and all of Miami's glossy hotels become clogged by practiced displays of hedonism.

When more people drive, the roads become clogged, delays go up, and driving becomes less appealing.

But it too has become clogged by cars and choked by air pollution over the past few decades.

Today, the substance helps control vibrations in speakers and seal off electronics so they don't become clogged with debris.

However, Mr. Heffernan cautions, these can strain older HVAC systems by restricting the airflow as they become clogged with captured particles.

That means that even though they become clogged with antiperspirant, your pores are not open channels for chemicals to pass through freely.

Railroad switch points can also become clogged with ice and snow in subzero conditions, so the heating system is used to unclog them.

Once they become clogged, roughly every 24 hours, the larvacean whisks itself out with a flick of its tail and builds a fresh dwelling.

Spectranetics uses techniques including lasers and tiny drug-covered balloons to clean the insides of veins and arteries that have become clogged due to heart disease.

As the water piles up along the coast, rivers and streams that typically drain into the ocean can become clogged farther upstream, forcing water levels to rise.

As the water piles up along the coast, rivers and streams that typically drain into the ocean can become clogged further upstream, forcing water levels to rise.

It is increasing the days of stock it holds from three days to five days and could fly in parts if ports become clogged up after March 29.

Government workers employed to clean Srinagar's iconic Dal Lake have not turned up for work in several weeks, officials said, and the water's surface has become clogged with weeds.

If a child's ears become clogged on the descent, Dr. Young suggestedthe following: Have the child hold his nose and, with mouth closed, gently blow through the plugged nose.

Manufacturers typically recommend replacing filters every three months, Mr. Heffernan says, but when particulate pollution is high, as during wildfires, they can become clogged in less than half that time.

Those numbers are more or less identical, and they're not far ahead of the answer in fourth place — given by 20 percent of respondents — which says the games have become clogged with too many ads.

Despite this alarming statistic, however, surgeons have long struggled to obtain stents, the small tubes of steel mesh used to open up the arteries that supply oxygen to the heart after they have become clogged.

It will do so as its banks' balance sheets become clogged with non-performing loans and where the need to prop up zombie enterprises will preclude the flow of credit to the more dynamic sectors of its economy.

When the inbound lanes of 495 become clogged, a stream of cars backs up toward the Turnpike and onto Route 3, a highway that wends west through Secaucus, past the Meadowlands sports complex and into the suburban beyond.

And while the rich folks come to Pebble Beach to shop for special cars, the local residents cringe as their streets become clogged with patrons traveling from the track to the numerous auctions and meet-ups held around town.

Pros: Compact all-in-one mop and floor cleaner, pads and cleaning solution refills easy to find, can be used to clean other types of hard surface floorsCons: Spray nozzles can become clogged if the mop isn't used regularly

Ports in the southeast, through which most of Britain's trade with the European Union flows, could become clogged if customs inspections are required when Britain leaves the EU. This has put a focus on ports elsewhere to ease any pressure.

Pros: Compact, all-in-one mop and floor cleaner, cleaning solutions for other types of floors are interchangeable, refills simple to find, great customer serviceCons: Spray nozzles can become clogged if the mop isn't used regularly, cleaning pads aren't reusable, pricier to maintain

"Products use it [in relation to] a variety of things, including the removal of dry skin (dry brushes, soaks, scrubs), the decongestion of skin that has become clogged, and the reinforcement of the barrier of the skin to protect against invasion (antioxidant serums)," she says.

As autumn begins to cradle us ever closer in her perpetually clammy and chilly grip, smoking areas become clogged with the mulch of a thousand dead leaves trodden into tarmac, and the warmth of your ecstasy-jacket has to be supplemented with an actual jacket made of actual clothes, we're reminded of the hundreds of little deaths that UK club culture's endured as it limps lamely down the lane towards the twilight of its life.

Canon now uses (in most models) replaceable print heads which are designed to last the life of the printer, but can be replaced by the user should they become clogged.

Cardiac bypass is performed when the arteries that bring blood to the heart muscle (coronary arteries) become clogged by plaque. Such a condition may cause chest pain from angina pectoris or a heart attack.

The belt is pulled into the gun during the rearward motion of the bolt carrier. The noteworthy flaw in the drum's design is its unreliability in dirty conditions; it can become clogged with filth and other natural elements.

All stations except Bergkrystallen were upgrades, receiving new sheds, lighting, platform decks and improved accessibility. The ballast had become clogged up, hindering proper drainage. Tracks and ballast were replaced, allowing the temporary speed limit of to be abolished. In addition, two bridges and two culverts were renovated.

A bird deterrent attached to a light pole on the Houghton Highway viaduct, Australia. The spikes can become clogged by leaves, debris and bird feathers. If left unchecked, this can allow birds to perch easily on top. In addition, spikes can make buildings appear less attractive or untidy, especially landmark buildings.

Filters may have fine meshes that must be replaced or cleaned, and ceramic water filters must have their outside abraded when they have become clogged with impurities. These water filters should not be confused with devices or tablets that disinfect water which remove or kill viruses such as hepatitis A and rotavirus.

The chief reason why people with diabetes develop high blood pressure is hardening of the arteries. Diabetes tends to speed up the process of atherosclerosis. The other fact about diabetes is that it affects both large and small blood vessels in the body. Over time, blood vessels become clogged with fatty depots, become non-compliant and lose their elasticity.

In acne, the follicles become clogged with black sebaceous material, forming comedones (also known as blackheads). Comedones can become irritated, swollen, infected, and ultimately pustules. These may elicit itching and discomfort due to swelling and bacterial growth inside infected glands. Bacterial folliculitis occurs when follicules become infected with Staphylococcus aureus, and commonly associated with moderate-to-severe feline acne.

A common alteration to the IV series was the replacement of the tailskid with a tailwheel. Operational experiences had shown that the spat on the main landing gear could become clogged with mud on grassy airfields and cause takeoff and landing problems. The spats were then often removed. During 1937, the superb performance of the B-534 was demonstrated at a flying exhibition.

The EPR is the main parameter for engine power management, and is derived from pressure sensors at the engine inlets. The sensors had probably become clogged with ice in this case. Such icing is normally prevented by a hot-air system, which probably was not activated by the aircrew during climb and cruise, according to BEA "analysis of the available data".

In heavy snow conditions the tracks can become clogged up, which reduces inrun speed and may cause an unpredictable descent for athletes. Event personnel standing by the sides of the inrun are often assigned to use leaf blowers to prevent the tracks from clogging up with snow.Commentary by David Goldstrom after Clemens Leitner's first-round jump, from the Eurosport 1 broadcast in Bischofshofen on 6 January 2019.

59 Prior to this reform the rolls had become clogged with debts, and clauses 2 through 8 of the Cowick Ordinance attempted to return the rolls to an exposition of accounts.Buck "Reform of the Exchequer" English Historical Review p. 246 Another attempted reform at this time was the removal of customs receipts, as well as military accounts, from the rolls.Graves Bibliography of English History p.

Long term effects of acne mechanica include potential scarring and skin discoloration at the area of the acne lesion if rubbing of the skin continues. It is not a lethal condition and the acne will clear up on its own once the heat and pressure stressors are avoided and if the skin is kept clean so the pores do not continue to become clogged.

While this presented additional surface to the blast, the annular orifice had a tendency to become clogged, which increased back pressure, and the exhaust pipes therefore frequently had to be taken out for cleaning. As delivered, the locomotive had thick wooden buffer beams which were later replaced by thick steel plates. The distance between the locomotive's tyres, i.e. between the wheel flanges on the axle, was .

Some second-generation 2.7 L V6 engines have suffered from failures due to oil sludge contamination. In February 2009, five separate class action lawsuits related to the alleged oil sludge defect were consolidated to the District of New Jersey. These problems happen when fine engine oil passages become clogged with sludge, and often result in catastrophic failure of the engine. An unknown number of Intrepid owners have been affected.

This can pull a large amount of tape from the cassette before the head drum stops spinning. The tape will be extensively damaged, the video heads will often become clogged, and the mechanism may be unable to eject the cassette. The dew sensor itself is mounted very close to the video head drum. Contrary to how one might expect this to behave, the sensor increases its resistance when moisture is present.

The breather is often located in the oil cap. As per the earlier engines, the road draught tube system also created pollution and objectionable odours. The draught tube could become clogged with snow or ice, in which case crankcase pressure would build and cause oil leaks and gasket failure. On slow-moving delivery vehicles and boats, there was often no suitable air slipstream for the road draught tube.

Hollow microneedles are similar to solid microneedles in material. They contain reservoirs that deliver the drug directly into the site. Since the delivery of the drug is dependent on the flow rate of the microneedle, there is a possibility that this type of array could become clogged by excessive swelling or flawed design. This design also increases the likelihood of buckling under the pressure of , and therefore failing to deliver any drugs.

27.865 DOI: 10.1016/j.jpba.2006.02.028 Benzyl alcohol, sold under the brand name Ulesfia, was approved by the U.S. Food and Drug Administration (FDA) in 2009, as a 5% solution for the treatment of head lice in people 6 months of age and older. It affects the louse's spiracles, preventing them from closing. These then become clogged with water or mineral oil or other matter and cause the insect to die from asphyxiation.

Some species, such as the Asian tiger mosquito, are known to fly and feed during daytime. Prior to and during blood feeding, blood-sucking mosquitoes inject saliva into the bodies of their source(s) of blood. This saliva serves as an anticoagulant; without it the female mosquito's proboscis might become clogged with blood clots. The saliva also is the main route by which mosquito physiology offers passenger pathogens access to the hosts' bloodstream.

A basset hound lying on its back In addition to ear problems, basset hounds may be susceptible to eye issues. Because of their droopy eyes the area under the eyeball can collect dirt and become clogged with a mucus. Basset Hounds are prone to yeast infections in the folds around the mouth, where drool can collect without thoroughly drying out. Overweight Basset Hounds develop many serious health issues, including bone and joint injuries, Gastric Dilatation Volvulus and paralysis.

A palette is used to thin and mix paints. Thinning paints when figure painting is essential as the small details can easily become clogged up with thickly applied paint. Any non-porous material, such as a ceramic tile, can be used as a palette and many hobbying companies sell well palettes and palette paper pads. Many figure painters who work in acrylic use wet palettes to keep their paints from drying out too quickly during a painting session.

Furillen is an island off the northeast coast of Gotland. With an area of , it is the third largest island under the jurisdiction of Gotland. A bridge and a narrow isthmus, wide enough for a road, connects the island to the coast of Gotland adjacent to the fishing village of Lergrav. At the beginning of the 21st century, the narrow strait separating Furillen from the main island of Gotland, had become clogged by silt and overgrown with reeds.

Even with these large holes in the screen, it can still become clogged and cause low oil pressure. A coating on the screen can reduce hole size to about , which in turn reduces the flow of oil by 44 percent. Even after passing through the oil pickup screen and the oil filter, debris can remain in the oil. It is very important to change the oil and oil filter to minimize the amount of debris flowing through your engine.

Most odonatologists live in temperate areas and the dragonflies of North America and Europe have been the subject of much research. However, the majority of species live in tropical areas and have been little studied. With the destruction of rainforest habitats, many of these species are in danger of becoming extinct before they have even been named. The greatest cause of decline is forest clearance with the consequent drying up of streams and pools which become clogged with silt.

The narrow streets of the old city can become clogged with traffic. Although the port city Iskenderun has become the largest city in Hatay, Antakya is a provincial capital still of considerable importance as the centre of a large district. The draining of Lake Amik and development of land has caused the region's economy to grow in wealth and productivity. The town is a lively shopping and business centre with many restaurants, cinemas and other amenities.

22, 61, 122, 156 The Panther's suspension was overengineered, and the Schachtellaufwerk interleaved road wheel system made replacing inner road wheels time-consuming (though it could operate with missing or broken wheels). The interleaved wheels also had a tendency to become clogged with mud, rocks and ice, and could freeze solid overnight in the harsh winter weather that followed the autumn rasputitsa mud season on the Eastern Front. Shell damage could cause the road wheels to jam together and become difficult to separate.

A ditch beside the rail-line had become clogged, resulting in flooding on the neighbouring land, owned by Julien Gervais. The municipality issued an order to the CPR, directing it to clean the obstruction. The CPR refused, arguing that as a federally incorporated railway, it was not required to comply with provincial law. The Quebec courts held that the provincial law did apply,Cie de Chemin de Fer Canadien du Pacifique v Notre-Dame-de-Bonsecours (Paroisse), 1897 CarswellQue 80, 7 Que.

Although the Mighty Mouse can sense both right and left clicks, it is not possible to press both sensors simultaneously. The user must learn to lift the left finger off the sensor surface before attempting a right-mouse click. The scroll ball will eventually become clogged with dirt and require cleaning. While there are methods to clean the ball without dismantling the mouse some users have complained that the Mighty Mouse is difficult to clean because the scroll ball mechanism is hard to take apart.

In engines, there is some exposure of the oil to products of internal combustion, and microscopic coke particles from black soot accumulate in the oil during operation. Also, the rubbing of metal engine parts produces some microscopic metallic particles from the wearing of the surfaces. Such particles could circulate in the oil and grind against the part surfaces causing wear. The oil filter removes many of the particles and sludge, but eventually, the oil filter can become clogged, if used for extremely long periods.

The medium of the filter is sand of varying grades. Where taste and odor may be a problem (organoleptic impacts), the sand filter may include a layer of activated carbon to remove such taste and odor. Sand filters become clogged with floc or bioclogged after a period in use and they are then backwashed or pressure washed to remove the floc. This backwash water is run into settling tanks so that the floc can settle out and it is then disposed of as waste material.

Conservation of Odonata has usually concentrated on the more iconic suborder Anisoptera, the dragonflies. However, the two suborders largely have the same needs, and what is good for dragonflies is also good for damselflies. The main threats experienced by odonates are the clearance of forests, the pollution of waterways, the lowering of groundwater levels, the damming of rivers for hydroelectric schemes and the general degradation of wetlands and marshes. The clearance of tropical rainforests is of importance because the rate of erosion increases, streams and pools dry up and waterways become clogged with silt.

Even for species in which the house does not completely surround the body, such as Fritillaria, the house is always present and attached to at least one surface. These houses are discarded and replaced regularly as the animal grows in size and its filters become clogged; in Oikopleura, a house is kept for no more than four hours before being replaced. No other tunicate is able to abandon its test in this fashion. Discarded larvacean houses account for a significant fraction of organic material descending to the ocean depths.

However a further report a few days later, on May 9, 1901, was that both Vosburg and Wheeler were inside the bar, but could not exit (a status known as "bar bound") because the channel had recently become clogged with sand. Work was being done to try to reestablish a channel. By May 31, 1901, the channel was still divided but one branch was ten feet deep, and this permitted Vosburg to exit and proceed to Astoria. On July 16, 1901, Wheeler sailed for San Francisco from Nehalem, again in the tow of Vosburg.

Coronary artery disease is a condition in which the blood vessels to the heart become clogged. It often leads to heart attacks and is one of the leading causes of death in the United States. Beginning in the mid-1960s, the leading treatment consisted of invasive bypass surgery, in which a healthy blood vessel from another part of the body is grafted onto the coronary artery, forming a detour around the afflicted region. Due to the high cost and risk of this procedure, an alternative was in high demand.

In addition to draining upland fresh water (in many instances) tidal creeks form by headwater retreat and downward incision of the water as it flows from inland to the shore. Tidal creeks deposit sediment in a process called accretion, which can maintain a flat plain by counteracting sea level rise or land subsidence. High tidal flow will maintain channels, while slower flow velocity can lead to closure of tidal creeks as they become clogged with sediment. Well-developed wetlands have sharp-banked tidal creeks, with vegetation stabilizing the sides of the creeks.

Sometimes a drywell with a series of gravel layers near the lowest spot in the rain garden will help facilitate percolation and avoid clogging at the sedimentation basin. However, a drywell placed at the lowest spot can become clogged with silt prematurely, turning the garden into an infiltration basin and defeating its purpose as a bioretention system. The more polluted the runoff water, the longer it must be retained in the soil for purification. Capacity for a longer purification period is often achieved by installing several smaller rain garden basins with soil deeper than the seasonal high water table.

These safety requirements were made in response to homeowners storing, or spilling, gasoline or other flammable liquids near their water heaters and causing fires. Since most of the new designs incorporate some type of flame arrestor screen, they require monitoring to make sure they do not become clogged with lint or dust, reducing the availability of air for combustion. If the flame arrestor becomes clogged, the thermal cutoff may act to shut down the heater. A wetback stove (NZ), wetback heater (NZ), or back boiler (UK), is a simple household secondary water heater using incidental heat.

Some shallow draught river icebreakers have been built with four propellers in the stern. Nozzles may be used to increase the thrust at lower speeds, but they may become clogged by ice. Until the 1980s, icebreakers operating regularly in ridged ice fields in the Baltic Sea were fitted with first one and later two bow propellers to create a powerful flush along the hull of the vessel. This considerably increased the icebreaking capability of the vessels by reducing the friction between the hull and the ice, and allowed the icebreakers to penetrate thick ice ridges without ramming.

In fixed-installation central vacuum cleaners, the cleaned air may be exhausted directly outside without need for further filtration. A well- designed cyclonic filtration system loses suction power due to airflow restriction only when the collection vessel is almost full. This is in marked contrast to filter bag systems, which lose suction when pores in the filter become clogged as dirt and dust are collected. In portable cyclonic models, the cleaned air from the center of the vortex is expelled from the machine after passing through a number of successively finer filters at the top of the container.

The Logitech iFeel optical mouse uses a red LED to project light onto the tracking surface. Unlike mechanical mice, whose tracking mechanisms can become clogged with lint, optical mice have no moving parts (besides buttons and scroll wheels); therefore, they do not require maintenance other than removing debris that might collect under the light emitter. However, they generally cannot track on glossy and transparent surfaces, including some mouse-pads, causing the cursor to drift unpredictably during operation. Mice with less image-processing power also have problems tracking fast movement, whereas some high-quality mice can track faster than 2 m/s.

Concert Sound and Lighting Systems, Ch. 5, 'Power amplifiers', By John Vasey Many power amplifiers feature internal fans to draw air across their heat sinks. The heat sinks can become clogged with dust, which can adversely affect the cooling capabilities of the amplifier. In the 1970s and 1980s, most PAs employed heavy Class AB amplifiers. In the late 1990s, power amplifiers in PA applications became lighter, smaller, more powerful, and more efficient, with the increasing use of switching power supplies and Class D amplifiers, which offered significant weight- and space- savings as well as increased efficiency.

On Sunday, April 29, 1901, word was received in Tillamook City, by telephone call, that in trying to cross the Nehalem River bar in the tow of Vosburg, Wheeler went ashore on the south spit, and would probably be a total loss. Vosburg made it inside safely. However a further report a few days later, on May 9, 1901, was that both Vosburg and Wheeler were inside the bar, but could not exit (a status known as "bar bound") because the channel had recently become clogged with sand. Work was being done to try to reestablish a channel.

Disposable printheads use a printhead that is part of a replaceable ink cartridge. Every time a cartridge is exhausted, the entire cartridge and printhead are replaced. This adds to the cost of consumables and makes it more difficult to manufacture a high- precision head at a reasonable cost, but also means that a damaged or clogged printhead is only a minor problem: the user can simply buy a new cartridge. Canon now uses (in most models) replaceable printheads which are designed to last the life of the printer, but can be replaced by the user should they become clogged.

General scholarly opinion is that the Exodus story combines a number of traditions, one of them at the "Reed Sea" (Lake Timsah, with the Egyptians defeated when the wheels of their chariots become clogged) and another at the far deeper Red Sea, allowing the more dramatic telling of events. Reeds tolerant of salt water flourish in the shallow string of lakes extending from Suez north to the Mediterranean Sea. Kenneth Kitchen and James Hoffmeier state that these reedy lakes and marshes along the isthmus of Suez are acceptable locations for yam suf. The ancient yam suf is not confined to the modern Red Sea.

Deforestation for the export of timber removes valuable protection for the soils in a dynamic ecosystem; thus regions are prone to desertification and silting of river banks as rivers become clogged with eroded soils in sparse areas. If too much timber is cut, soil that once had sufficient cover can get baked and dry out in the sun, leading to erosion and degradation of soil fertility; this means farmers cannot profit from their land even after clearing it. According to the United Nations Environmental Programme (UNEP) in 1977, deforestation is a major cause of desertification and in 1980 threatened 35% of the world's land surface and 20% of the world's population.

The mayor of Hull also took over the role of the Governor of Hull, with "keepers" were appointed by the town to run each of the buildings; the pasture land behind the fortifications was rented out to bring in income.; Arguments soon broke out between the Crown and the corporation over the deal. The Crown argued that the corporation was not adequately maintaining the castle and blockhouses.; The Earl of Sussex complained in 1569 that they were in need of repair, and a 1576 survey stated that their gun platforms were in poor condition and that the ditches had become clogged with earth, while coastal erosion had undermined the South Blockhouse.

These tubes are used to drain air and fluid until the patient heals enough to take them out (usually a few days). Complications such as pneumothorax, tension pneumothorax, or subcutaneous emphysema can occur if these chest tubes become clogged. Furthermore, complications such as pleural effusion or hemothorax can occur if the chest tubes fail to drain the fluid around the lung in the pleural space after a thoracotomy. Clinicians should be on the look out for chest tube clogging as these tubes have a tendency to become occluded with fibrinous material or clot in the post operative period, and when this happens, complications ensue.

Fuel filters need to be maintained at regular intervals. This is usually a case of simply disconnecting the filter from the fuel line and replacing it with a new one, although some specially designed filters can be cleaned and reused many times. If a filter is not replaced regularly it may become clogged with contaminants and cause a restriction in the fuel flow, causing an appreciable drop in engine performance as the engine struggles to draw enough fuel to continue running normally. Some filters, especially found on diesel engines, are of a bowl-like design which collect water in the bottom (as water is more dense than diesel).

A dust storm blankets Texas houses, April 1935 deposition Map of dust in 2017 Three years of use without cleaning has caused this laptop heat sink to become clogged with dust, and it can no longer be used as it may catch fire. Domestic dust on a finger Dust is made of fine particles of solid matter. On Earth, it generally consists of particles in the atmosphere that come from various sources such as soil lifted by wind (an aeolian process), volcanic eruptions, and pollution. Dust in homes is composed of about 50% dead skin cellsDust Biology for Allergists, Acarologists and Mycologists, J. E. M. H. van Bronswijk, p37.

On 23 June, after six months with her port side beneath the surface, Oglala was floated. The salvage crew was unable to bring her to the draft depth required by the keel blocks in the dry dock, however, and the ship was unsteady. Work began to increase draft and improve her stability but during the night of 25–26 June 1942, the pumps being used to keep her afloat were overwhelmed by an influx of water and she settled to the bottom again. An investigation revealed that the fuel line for the main gasoline powered pump had become clogged overnight, and the electrical back-up pump was not effective because the water level did not rise high enough.

The level was lowered by raising the wooden overflow gates which were fitted to the top of the outlet weir. With the level of the lake lowered, much of the southern end of the lake was dry, and water only entered the lake through the flood relief channel, because the original channel had become clogged with silt as a result of subsidence. Continuing subsidence meant that the dam freeboard was reduced to a height below that required by the reservoir safety legislation, and any work carried out could not make flooding above the lake worse, as this had previously resulted in a High Court action. In order to reinstate the required freeboard, two options were considered.

A cyclonic separation system, if used, does not lose suction as the collection container fills up, until the container is nearly full. This is in marked contrast to filter-bag designs, which start losing suction immediately as pores in the filter become clogged by accumulated dirt and dust. A benefit to allergy sufferers is that unlike a standard vacuum cleaner, which must blow some of the dirt collected back into the room being cleaned (no matter how efficient its filtration), a central vacuum removes all the dirt collected to the central unit. Since this central unit is usually located outside the living area, no dust is recirculated back into the room being cleaned.

In 1989, a similar methane gas buildup occurred underneath 3rd Street and adjacent buildings, probably because of the accidental plugging of a gas- venting well built after the Ross incident. Since the venting well had become clogged with a buildup of debris, methane slowly collected under the street and adjacent impermeable surfaces, bursting out on the morning of Tuesday, February 7, 1989, in a fountain of mud, water, and methane gas; no explosion occurred, since there was no source of ignition, and city emergency crews quickly cordoned off the area. As a result of this incident, Los Angeles further upgraded their City Building Code to require new buildings to have adequate venting systems, and be underlain with an impermeable membrane to prevent methane from getting in beneath the foundation.

At this time the area where the Praça do Comércio (Commerce Square) is today was reclaimed from the sea by draining the already muddy terrain (the river flowed freely until the time of the conquest, but had become clogged due to sediment deposits). New streets were laid out, such as Rua Nova, while the Rossio square became the city centre, stealing that distinction from the Castle hill. Other construction projects initiated by King Denis included a wall to protect the Cais da Ribeira from pirate raids, and reconstruction of the Alcáçova or Moorish Palace (later destroyed in the 1755 earthquake) and the Sé. Just as there were Portuguese communities in the cities of northern Europe, there were colonies of merchants from the rest of Europe in Lisbon, then one of the most important cities in international trade.

Photonic crystals can be incorporated in the development of point-of-care diagnostics as they can be designed to provide optical outputs in the presence of specific analytes. In 2018, Pavlichenko co-founded PionEar, a medical device company that creates liquid- infused tympanostomy tubes that can help to relieve inflammation, fluids, infection, and pain in the middle ear due to ear infections. Pavlichenko was inspired to create these devices as her young daughter was suffering from recurrent ear infections, like many young children do, and she wanted a better solution compared to the often ineffective ear tubes that physicians are limited to using to treat earn infections. Typical ear tube technology often gets infected, the tubes are pre-maturely extruded from the ear, can become clogged, and re-insertion often lead to scarring later in life.

Because of the low detergents in oils of that era these passages would often become clogged giving the Y-Block a reputation for bad oiling to the top end. Ford came up with a stop gap measure for this problem by feeding oil via an external tube directly to the rocker shafts from the main oil gallery. Because of better oils today and a grooved center cam journal, a clean freshly rebuilt Y-Block should no longer have this problem and thus, no need for the external oiling tube. Cylinder heads on the Y-Block have always been a point for discussion. Because of the configuration of the intake ports, vertically in pairs instead of horizontally side by side, and the way in which they make sharp turns around the head bolts, they have been called “bad breathers”.