Vaihingen (Enz) station

Vaihingen (Enz) station is a long-distance and the regional station at an important railway junction in the town of Vaihingen an der Enz in the German state of Baden-Württemberg. It is classified by Deutsche Bahn as a category 3 station.

It is one of a few passenger stations in German that are designed to allow Intercity-Express (ICE) trains to pass at 250 km/h. The ICE through tracks do not have platforms.

Location

The station is located about 2.5 kilometers from the centre of Vaihingen, between the town and the suburb of Kleinglattbach at about 250 metres above sea level.

The station lies on the Mannheim–Stuttgart high-speed line (near the 78 km mark from Mannheim) and on the Württemberg Western Railway.

Structure

The railway system consists of eight tracks, which are numbered in ascending order in a northeasterly direction. In the middle of these tracks are the two tracks of the high-speed line for trains running at up to 250 km/h (track 4 and 5). Close by on both sides are two passing tracks (3 and 6). In the northeast is a platform for stopping passenger trains (tracks 7 and 8) and another platform to the south (tracks 1 and 2).

Enz

The Enz is a river flowing north from the Black Forest to the Neckar in Baden-Württemberg. It is 112 km long.

Its headstreams – the Little Enz (German: Kleine Enz) and the Great Enz or Big Enz (Große Enz) – rise in the Northern Black Forest, the latter at Enzklösterle. In Calmbach, the Little Enz and the Big Enz join to form the Enz. The river passes through Neuenbürg and Pforzheim, where it leaves the Black Forest. It then flows through the cities of Vaihingen and Bietigheim-Bissingen. Along the lower course, wine is grown.

Major tributaries to the Enz are Glems and Nagold (with its tributary Würm). Near Besigheim the Enz feeds into the Neckar.

In earlier times the Enz was important for the timber rafting industry.

Geography

River system

The Enz flows through two large natural regions: in the upper half of its course, the river and its tributaries drain the eastern half of the Northern Black Forest; later it flows through the southwest German Gäu landscape, mostly through the Neckar Basin.

Enzkreis

Enzkreis is a district (Kreis) in the north-west of Baden-Württemberg, Germany. Neighboring districts are (from west clockwise) Karlsruhe, Heilbronn, Ludwigsburg, Böblingen and Calw. The district-free Pforzheim area in the south is nearly completely surrounded by Enz.

History

The district was created in 1973, when the previous district Pforzheim was merged with parts of the neighboring districts Vaihingen, Leonberg and Calw. Some part of the district Pforzheim was included into the city Pforzheim.

The district Pforzheim dates back to 1939, when the Bezirksamt Pforzheim was split into the district and the district-free city.

Geography

The south of the Enz district covers the northern part of the Black Forest. In the north-west of the district is the Kraichgau, a mainly agricultural area. The main river is the Enz, a tributary of the Neckar.

International relations

Twin towns — Sister cities

Since March 1993 the district has an official partnership with the Italian province Reggio Emilia. Since 1996 the district has a partnership with the Polish city Mysłowice. As two municipalities left the city in a communal reform in 1995, the partnership also includes Imielin and Chelm Slaski. In March 2001 the Enz district together with the city Pforzheim started a friendship with the Hungarian Komitat Györ-Moson-Sopron.

Enzyme

Enzymes /ˈɛnzaɪmz/ are macromolecular biological catalysts. Enzymes accelerate, or catalyze, chemical reactions. The molecules at the beginning of the process are called substrates and the enzyme converts these into different molecules, called products. Almost all metabolic processes in the cell need enzymes in order to occur at rates fast enough to sustain life. The set of enzymes made in a cell determines which metabolic pathways occur in that cell. The study of enzymes is called enzymology.

Enzymes are known to catalyze more than 5,000 biochemical reaction types. Most enzymes are proteins, although a few are catalytic RNA molecules. Enzymes' specificity comes from their unique three-dimensional structures.

Like all catalysts, enzymes increase the rate of a reaction by lowering its activation energy. Some enzymes can make their conversion of substrate to product occur many millions of times faster. An extreme example is orotidine 5'-phosphate decarboxylase, which allows a reaction that would otherwise take millions of years to occur in milliseconds. Chemically, enzymes are like any catalyst and are not consumed in chemical reactions, nor do they alter the equilibrium of a reaction. Enzymes differ from most other catalysts by being much more specific. Enzyme activity can be affected by other molecules: inhibitors are molecules that decrease enzyme activity, and activators are molecules that increase activity. Many drugs and poisons are enzyme inhibitors. An enzyme's activity decreases markedly outside its optimal temperature and pH.

Station

Station may refer to:

Agriculture and geography

Communications

Environment variable

Environment variables are a set of dynamic named values that can affect the way running processes will behave on a computer.

They are part of the environment in which a process runs. For example, a running process can query the value of the TEMP environment variable to discover a suitable location to store temporary files, or the HOME or USERPROFILE variable to find the directory structure owned by the user running the process.

They were introduced in their modern form in 1979 with Version 7 Unix, so are included in all Unix operating system flavors and variants from that point onward including Linux and OS X. From PC DOS 2.0 in 1982, all succeeding Microsoft operating systems including Microsoft Windows, and OS/2 also have included them as a feature, although with somewhat different syntax, usage and standard variable names.

Details

In all Unix and Unix-like systems, each process has its own separate set of environment variables. By default, when a process is created, it inherits a duplicate environment of its parent process, except for explicit changes made by the parent when it creates the child. At the API level, these changes must be done between running fork and exec. Alternatively, from command shells such as bash, a user can change environment variables for a particular command invocation by indirectly invoking it via env or using the ENVIRONMENT_VARIABLE=VALUE <command> notation. All Unix operating system flavors, DOS, and Windows have environment variables; however, they do not all use the same variable names. A running program can access the values of environment variables for configuration purposes.

Station (New Zealand agriculture)

A station, in the context of New Zealand agriculture, is a large farm dedicated to the grazing of sheep and cattle. The use of the word for the farm or farm buildings date back to the mid-nineteenth century. The owner of a station is called a runholder.

Some of the stations in the South Island have been subject to the voluntary tenure review process. As part of this process the government has been buying out all or part of the leases. Poplars Station in the Lewis Pass area was purchased in part by the government in 2003. The Nature Heritage Fund was used to purchase 4000 ha for $1.89 million. Birchwood Station was bought in 2005 to form part of the Ahuriri Conservation ParkSt James Station was purchased by the Government in 2008.

Notable stations