Medway

Medway is a conurbation and unitary authority in South East England. The unitary authority was formed in 1998 when the City of Rochester-upon-Medway amalgamated with Gillingham Borough Council and part of Kent County Council to form Medway Council, a unitary authority independent of Kent County Council.

It is colloquially known as the Medway Towns. Over half of the unitary authority area is parished and rural in nature. Because of its strategic location by the major crossing of the River Medway, it has made a wide and historically significant contribution to Kent, and to England, dating back thousands of years, as evident in the siting of Watling Street by the Romans and by the Norman Rochester Castle, Rochester Cathedral (the second oldest in Britain) and the Chatham naval dockyard and its associated defences.

The main towns in the conurbation are (from west to east): Strood, Rochester, Chatham, Gillingham, and Rainham. Many smaller towns and villages such as Frindsbury, Brompton, Walderslade, Luton, Wigmore etc., lie within the conurbation. Outside the urban area, the villages retain parish councils. Cuxton, Halling and Wouldham are in the Medway Gap region to the south of Rochester and Strood. Hoo St Werburgh, Cliffe, High Halstow, St Mary Hoo, Allhallows, Stoke and Grain are on the Hoo Peninsula to the north. Frindsbury Extra including Upnor borders Strood.

Medway (Mount Holly, South Carolina)

Medway or the Medway Plantation is a plantation in Mount Holly, South Carolina within Berkeley County, South Carolina. It is about 2 mi (3.2 km) east of U.S. Route 52 from the unincorporated community of Mount Holly, which is directly north of Goose Creek, South Carolina. It was named to the National Register of Historic Places on July 16, 1970.

History

Jan Van Arrsens, the Seigneur of Wernhaut (also "Weirnhoudt"), led a small group of settlers from Holland to the province of Carolina around 1686. He built his house on the Back River, which was formerly called the "Meadway" or "Medway" and is a tributary of the Cooper River. Van Arrsens died soon after his arrival and was buried at Medway.

His widow, Sabrina de Vignon, married Landgrave Thomas Smith around 1687, which made Smith one of the wealthiest men in the Province. Sabrina Smith died in 1689 and was buried at Medway. Thomas Smith was appointed governor of the Province of Carolina in 1693. He died in 1694 and was also buried at Medway.

Medway (disambiguation)

Medway is the name, since 1998, of a conurbation in Kent in South East England.

Medway may also refer to:

Place names

In Kent:

Military history

Other

Barrier

A barrier or barricade is a physical structure which blocks or impedes something.

Barrier may also refer to:

Physical

Roadway

Crowd and noise control

Barrier (computer science)

In parallel computing, a barrier is a type of synchronization method. A barrier for a group of threads or processes in the source code means any thread/process must stop at this point and cannot proceed until all other threads/processes reach this barrier.

Many collective routines and directive-based parallel languages impose implicit barriers. For example, a parallel do loop in Fortran with OpenMP will not be allowed to continue on any thread until the last iteration is completed. This is in case the program relies on the result of the loop immediately after its completion. In message passing, any global communication (such as reduction or scatter) may imply a barrier.

Dynamic barriers

Classic barrier constructs define the set of participating processes/threads statically. This is usually done either at program startup or when a barrier like the Pthreads barrier is instantiated. This restricts the possible applications for which barriers can be used.

To support more dynamic programming paradigms like fork/join parallelism, the sets of participants have to be dynamic. Thus, the set of processes/threads participating in a barrier operation needs to be able to change over time. X10 introduced the concept of clocks for that purpose, which provide a dynamic barrier semantic. Building on clocks, phasers have been proposed to add even more flexibility to barrier synchronization. With phasers it is possible to express data dependencies between the participating processes explicitly to avoid unnecessary over-synchronization.

Barrier isolator

Barrier isolator is a general term that includes two types of devices: Isolators and Restricted Access Barriers (RABS). Both are devices that provide a physical and aerodynamic (air overpressure) barrier between the external clean room environment and a work process. The isolator design is the more dependable of the two barrier design choices, as it prevents contamination hazards by achieving a more comprehensive separation of the processing environment from the surrounding facility. Nonetheless, both Isolator and RABS designs are contemporary approaches developed over the last 35 years and a great advancement over designs of the 1950s-70s that were far more prone to microbial contamination problems.

Barrier and Isolator designs are used throughout the industries, from sterile injectable drug filling to cytotoxic sterile drug compounding to electronics manufacturing to orange juice filling. Pharmaceutical industry and pharmacy compounding isolators are used for maintaining sterility of a drug, and that is the focus of this article. This type of strict design and control is important when producing sterile medicines because consumers receiving injections, surgical irrigants, or other "parenterally"-administered drugs are often highly vulnerable to infection. As a result, contaminated drugs have caused grave (e.g., permanent injury, death) consequences for the consumer. The sterility of other dosage forms, such as ophthalmics, is similarly important, as blindness or partial loss of vision has occurred due to intrinsically contaminated eye medications.