61,984 articles
Hebei-Nanjing Connecting Gas Pipeline
The Hebei-Nanjing Connecting Gas Pipeline (冀宁联络线) is an 886 km natural gas pipeline built by PetroChina that links the West-East Gas Pipeline with Shaan-Beijing Line 2, entering service in 2005.
Hebel Haus
Hebel Haus (ヘーベルハウス) is a Japanese brand of factory-built homes sold by Asahi Kasei Homes since 1972, combining steel frames with Hebel concrete panels and marketed around 60-year durability and free inspections.
Hebi Heqi power station
Hebi Heqi power station is a coal-fired power station of at least 1,320 MW in Qi County, Hebi, Henan, China, whose two 660 MW ultra-supercritical units entered service in 2015.
Hebi power station
Hebi power station (鹤壁电厂) is a complex of coal-fired power stations in Hebi, a mining city in northern Henan Province, China, built in phases from 1988 to 2015.
Hebrew Orphan Asylum
The Hebrew Orphan Asylum of New York was a Jewish orphanage in Manhattan, founded in 1860 by the Hebrew Benevolent Society; it cared for more than 35,000 children before closing in 1941.
Hebron Oil and Gas Field
The Hebron oil field is an offshore field in the Jeanne d'Arc Basin on the Grand Banks off Newfoundland, Canada, producing heavy oil since 2017 from a concrete gravity-based platform operated by ExxonMobil.
Heckler & Koch
Heckler & Koch (Heckler & Koch GmbH, HK) is a German firearms manufacturer founded in 1949 by former Mauser engineers, known for the G3 rifle and MP5.
Heckler & Koch G11
The Heckler & Koch G11, also known as the HK G11, was a West German prototype bullpup assault rifle firing caseless 4.73×33 mm ammunition, developed from the 1970s through 1990 and canceled before production.
Heckler & Koch G3
The Heckler & Koch G3, also known as the HK G3, is a German battle rifle in 7.62×51 mm NATO adopted by the Bundeswehr in 1959.
Heckler & Koch G36
The Heckler & Koch G36 is a 5.56 mm NATO assault rifle developed by Heckler & Koch in the 1990s as the standard rifle of the German Bundeswehr.
Heckler & Koch G95
The Heckler & Koch G95, also called Gewehr 95, is the German Bundeswehr's standard assault rifle, a variant of the HK416A8 that replaced the G36 in 2025.
Heckler & Koch HK21
The Heckler & Koch HK21 is a German belt-fed general-purpose machine gun introduced in 1961, derived from the G3 rifle and sharing its roller-delayed blowback system.
Heckler & Koch HK33
The Heckler & Koch HK33, including the export HK33E model, is a 5.56x45mm assault rifle developed in West Germany in the mid-1960s as a scaled-down G3 battle rifle.
Heckler & Koch HK416
The Heckler & Koch HK416 is a German 5.56mm assault rifle built on the M4 pattern but with a gas piston system, adopted by France, Norway, and Germany.
Heckler & Koch HK417
The Heckler & Koch HK417 is a German assault rifle in 7.62 mm NATO made by Heckler & Koch, the larger-caliber counterpart of the HK416.
Heckler & Koch HK433
The Heckler & Koch HK433 is a modular German assault rifle in 5.56 mm NATO, unveiled in January 2017, combining features of the G36 and HK416 rifle families.
Heckler & Koch HK45
The Heckler & Koch HK45 is a German .45 ACP semi-automatic pistol, a product improvement of the USP45, developed as a candidate for a U.S. military pistol program.
Heckler & Koch Mark 23
The Heckler & Koch Mark 23 is a large-frame .45 ACP pistol built for US Special Operations Command, adopted in 1996 as the MK 23 Mod 0.
Heckler & Koch MG4
The Heckler & Koch MG4 is a belt-fed 5.56 mm light machine gun made by German manufacturer Heckler & Koch, the Bundeswehr's light squad-support weapon.
Heckler & Koch MG5
The Heckler & Koch MG5 (HK MG5) is a German 7.62 mm NATO belt-fed general-purpose machine gun, developed as the HK121 and selected by the Bundeswehr in 2013 to replace the MG3.
Heckler & Koch MP5
The Heckler & Koch MP5 (HK MP5) is a German 9 mm submachine gun derived from the G3 rifle and adopted by West Germany in 1966.
Heckler & Koch MP7
The Heckler & Koch MP7, also known as HK MP7, is a compact submachine gun chambered for the 4.6 mm x 30 cartridge, developed for non-infantry soldiers and police.
Heckler & Koch P30
The Heckler & Koch P30 is a hammer-fired, polymer-framed semi-automatic pistol made by German manufacturer Heckler & Koch, chambered in 9 mm and used by German and Norwegian police forces.
Heckler & Koch P7
The Heckler & Koch P7 (HK PSP) is a German 9 mm semi-automatic pistol with a gas-delayed blowback system and a squeeze cocker, produced from 1979 to about 2008.
Heckler & Koch PSG1
The Heckler & Koch PSG1 (PSG-1) is a German semi-automatic sniper rifle in 7.62×51mm NATO, derived from the G3 and adopted by police units including Germany's GSG 9.
Heckler & Koch UMP
The Heckler & Koch UMP (Universale Maschinenpistole) is a select-fire submachine gun released in 1999 by Heckler & Koch as a lighter, lower-cost successor to the MP5, chambered in 9x19mm, .40 S&W, or .45 ACP.
Heckler & Koch USP
The Heckler & Koch USP, or Universal Self-loading Pistol, is a semi-automatic pistol introduced by Germany's Heckler & Koch in 1993 and adopted by the Bundeswehr as the P8.
Heckler & Koch VP9
The Heckler & Koch VP9 is a polymer-framed, striker-fired 9 mm semi-automatic pistol from German maker Heckler & Koch, introduced in the United States in 2014.
Heckler & Koch XM8
The Heckler & Koch XM8, or XM8 rifle, was a modular 5.56 mm assault rifle developed for the United States Army from 2002 until the program ended in 2005.
Héctor García-Molina
Héctor García-Molina (1953–2019) was a Mexican-born computer scientist, a Stanford professor known for distributed databases, replicated data, and the Stanford Digital Libraries Project that produced Google.