A salt bridge ( e. g. filter paper soaked in KNO < sub > 3 </ sub >) is often employed to provide ionic contact between two half-cells with different electrolytes, to prevent the solutions from mixing and causing unwanted side reactions.

If no salt bridge were used, this charge difference would prevent further flow of electrons.

In recent years, the bridge has been closed on 1 May to prevent people from jumping, as the water under the bridge is only deep and jumping from the bridge has resulted in serious injury in the past.

For example, in the two famous Kinsman Transit cases from the 2nd Circuit ( exercising admiralty jurisdiction over a New York incident ), it was clear that mooring a boat improperly could lead to the risk of a boat drifting away and crashing into another boat, and that both boats could crash into a bridge, which collapsed and blocked the river, and in turn, the wreckage could flood the land adjacent to the river, as well as prevent any traffic from traversing the river until it had been cleared.

The city council's legal moves meant to prevent the bridge from being built failed.

A balustrade or railing is a kind of fence to prevent people from falling over the edge, for example, on a balcony, stairway ( see railing system ), roof, bridge, or elsewhere near a body of water, places where people stand or walk and the terrain is dangerously inclined.

Additionally, the roadway network has been increasingly fitted with additional communications and control infrastructure to allow traffic operations personnel to monitor weather conditions, for dispatching maintenance crews to perform snow or ice removal, as well as intelligent systems such as automated bridge de-icing systems which help to prevent accidents.

The departing French blew up some of the bridge arches to prevent a direct pursuit.

Although strong in compression, cast iron was known to be brittle in tension or bending, yet, on the day of the accident, the bridge deck was covered with track ballast to prevent the oak beams supporting the track from catching fire.

The justification for the additional expenditure and complexity related to digging a tunnel for part of the way – rather than simply raising that section of the bridge – was to avoid interfering with air traffic from the nearby Copenhagen International Airport, and also to provide a clear channel for ships in good weather or bad, and to prevent ice floes from blocking the strait.

On June 28, 1863, during the Gettysburg Campaign, the replacement covered bridge was burned by Columbia residents and the Pennsylvania state militia to prevent Confederate soldiers of the Army of Northern Virginia from entering Lancaster County.

To prevent damage due to future flooding, they raised the bridge to above the average water line.

In 1998 barriers were installed on the bridge to prevent people jumping.

According to the city's website, Tczew was the location of the start of World War II when German bombers attacked Polish sapper installations to prevent the bridge from been blown up at 04: 34 on 1 September 1939 ( the shelling of Westerplatte commenced at 04: 45 ).

The basic function of STP is to prevent bridge loops and the broadcast radiation that results from them.

Eventually permanent barricades were bolted to the bridge to prevent vehicles from crossing.

The bridge was rebuilt after Oliver Cromwell blew it up in the English Civil War to prevent King Charles I's troops approaching London from the Royalist base in Lincolnshire.

Under the command of the Prince de Tingry, French regiments held the bridge at Prouvy against repeated Austrian attacks ; finally, as the day drew to a close, the French destroyed the bridge to prevent it falling into the hands of the enemy.

A self-anchored suspension bridge has some similarity in principle to the cable-stayed type in that tension forces that prevent the deck from dropping are converted into compression forces vertically in the tower and horizontally along the deck structure.

He cut off all access to Antwerp from the sea by constructing a bridge of boats across the Scheldt from Calloo to Oordam, in spite of the desperate efforts of the besieged townspeople to prevent its completion.

The bridge has only one pier on the northern bank but two piers on the lower southern bank, one to bear the weight ( the main pier ) and, further to the south, one to prevent the bridge from twisting ( the anchor pier ).

Even the knowledge that she was losing another boy, as a mother always does when a marriage is made, did not prevent her from having the first carefree, dreamless sleep that she had known since they dropped down the canyon and into Bear Valley, way, way back there when they were crossing those other mountains.

It is a publishing and public relations center, but these very facts prevent it from being a literary center because writers dislike provincialism and untruth.

In designing his home fallout shelter there is nothing to prevent a man from planning to shelter that home's occupants, `` plus-one '' -- so he will be able to take in a stranger.

The purpose of the adjusted Federal share relating to the base allotment and of the transition provisions for reaching the unadjusted Federal share is to prevent dislocations from abrupt changes in matching rates.

The Government of India agrees that it will take all possible measures to prevent the resale or transshipment to other countries or the use for other than domestic purposes ( except where such resale, transshipment or use is specifically approved by the Government of the United States of America ), of the surplus agricultural commodities purchased pursuant to the provisions of this Agreement, and to assure that the purchase of such commodities does not result in increased availability of these or like commodities for export from India.

The return spring tension may be adjusted to suit individual requirements by gripping the spring housing with a pair of pliers ( to prevent the spring from unwinding when it is released ), loosening the lock nut or screw, and rotating the housing until the desired tension is achieved.

In man the normal level of iodine in the diet and the level necessary to prevent development of goitre is about 100 **ymg per day.

When irregularity and variation prevent summarizing, information is written in complete detail.

Philosophy can prevent the working scientist from becoming slothful and self-content by noting the assumptions and level at which a hypothesis or theory is framed.

That is, when first penetration takes place, the pressure and pain signals may involuntarily cause all the vaginal muscles to contract in an effort to bar the intrusion and prevent further pain.

To get around this quite difficult corner, there is one first aid to objectiveness: prevent the distant sitter from knowing which reading was for him.

In some countries the trend has gone further than others: Mexico, Panama, and Venezuela are displaying open sympathy for Castroism, and there is no country -- save the Dominican Republic whose funeral services we recently arranged -- where Castroism and Anti-Americanism does not prevent the government from unqualifiedly espousing the American cause.

The United States, State Department officials explain, now is mainly interested in setting up an international inspection system which will prevent Laos from being used as a base for Communist attacks on neighboring Thailand and South Viet Nam.

But it is apparent that no acceptable formula has been found to prevent such a possibility.

( Pp. 228-229 ) in any event, it is obvious that the anti-trust laws did not prevent the formation of some of the greatest financial empires the world has ever known, held together by some of the most fantastic ideas, all based on the fundamental notion that a corporation is an individual who can trade and exchange goods without control by the government ''.

`` The important thing from now on '', he said, `` is not to mourn the past but to seize the future opportunity to prevent the loss in northern Viet Nam from leading to the extension of Communism throughout Southeast Asia ''.

It is difficult to say what can be done about them except that we must learn to recognize when it is they, rather than pretexts for them, that are causing the trouble, and do everything possible to nurture the healthy personalities that will prevent the development of such deficiencies.

It is also stated that Hera kidnapped Eileithyia, the goddess of childbirth, to prevent Leto from going into labor.

This is usually because of adverse conditions such as low water temperatures which may inhibit the production of thyroxine or prevent the larva from reacting to the hormone in the normal way.

The reason for blocking is to isolate a systematic effect and prevent it from obscuring the main effects.

Argon is mostly used as an inert shielding gas in welding and other high-temperature industrial processes where ordinarily non-reactive substances become reactive ; for example, an argon atmosphere is used in graphite electric furnaces to prevent the graphite from burning.