E1

E1, E01, E.I or E-1 may refer to:

Transport

Trains and locomotives

• E1 Series Shinkansen, a Japanese high-speed train
• Bavarian E I, a German steam engines locomotive model
• EMC E1, a diesel locomotive
• LB&SCR E1 class, a 1874 British 0-6-0 steam locomotive
• NCC Class E1, a Northern Counties Committee Irish steam locomotive
• NER Class E1, a 1898 class of small 0-6-0T steam locomotive
• PRR E1, an American PRR 4-4-2 steam locomotive
• SP&S Class E-1, a 1934 steam locomotives class
• WLWR Class E1, a Waterford, Limerick and Western Railway Irish steam locomotive

Aircraft

• E1 Gavilán, an unmanned electrical-surveillance airplane of design and manufacturing by the Mexican firm Hydra Technologies of Mexico
• E-1 Tracer, an American airborne early warning aircraft
• Fokker E.I (or E.1), a German fighter aircraft
• Junkers E.I, the Idflieg designation for the 1916 Junkers J1 aircraft
• LVG E.I, a 1915 German two-seat monoplane
• Standard E-1, a 1917 early American Army fighter aircraft

Submarines

• HMS E1, an E-class submarine of the Royal Navy
• USS E-1 (SS-24), a 1917 E-class submarine of the United States Navy

Roads

• E1 (Zimbabwe), a Transport in Zimbabwe
• European route E01, from Northern Ireland to Spain
• European walking route E1, a long-distance hiking route from Sweden to Italy
• London Buses route E1, a transport for London contracted bus route
• E1, the North–South Expressway Northern Route in Malaysia
• E01 highway (Sri Lanka), an expressway in Sri Lanka

Science and mathematics

• Exponential integral, $E_1(z)= \int_1^\infty \frac{e^{-tz}}{t}\, {\rm d}t~$, mathematical function

Biochemistry

• E1 mechanism, in organic chemistry
• Ubiquitin-activating enzyme, a protein component of proteasome-mediated protein degradation
• E1 regulatory sequence for the insulin gene
• Estrone, a hormone
• The first part of the pyruvate dehydrogenase enzyme complex
• Haplogroup E1

Medicine

• E01, Iodine-deficiency-related thyroid disorders and allied conditions ICD-10 Chapter IV: Endocrine, nutritional and metabolic diseases code

Technology

• E-carrier level 1, or E1 carrier. E-carrier is a European telecommunications standard. The level 1 E-carrier is a wire technology used by telecommunication operators with 2 Mbit/s data rate. a E1 carrier consists of 32 channels. usually, one or two of which are used for control purposes.

Brands, models and companies

• E1 Corp., a Korean chemical and oil company, member of the LS Group
• Honda E1, a predecessor of the ASIMO humanoid robot
• Mazda E engine#E1, a piston engine
• Olympus E-1, a digital single-lens reflex camera
• Entertainment One, an international media company
• E1 Music, the largest independent American record label, a subsidiary of Entertainment One
• Renesas E1 on-chip debugging (emulation) module for RX, V850 and RL78

Geography

• E1 (Jerusalem), a disputed area in Ma'ale Adumim, east of Jerusalem
• The E1 postcode district in London

Other

• E-1, the pay grade for the enlisted ranks of Private, Airman Basic, and Seaman Recruit in the United States Military
• The E1 grade of difficulty in rock climbing
• E-1 (rocket engine)

See also

• 1E (disambiguation)