All articles starting with H
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Hitting time
In mathematics and physics, a hitting time, or first-passage time, is the first time a stochastic process reaches a specified state or crosses a threshold.
Hittite attack on Amki
The Hittite attack on Amki, also Amqa or Amqu, was a raid by King Suppiluliuma I on the Egyptian borderland of Amqu in the mid-14th century BC.
Hittite conquest of Ugarit
The Hittite conquest of Ugarit was the submission of the Syrian kingdom of Ugarit to Šuppiluliuma I around 1340 BC, making its king Niqmaddu II a vassal.
Hittite cuneiform
Hittite cuneiform is the adaptation of Mesopotamian cuneiform to write the Hittite language at Hattuša and other Anatolian sites from about 1650 to 1200 BC, producing an archive of about 30,000 tablets.
Hittite destruction of Qatna
The Hittite destruction of Qatna was the violent destruction of the Bronze Age Syrian kingdom's royal palace around 1340 BC by Hittite forces under Šuppiluliuma I.
Hittite land grants
Hittite land grants, also called donation texts, are royal cuneiform tablets granting state land to institutions and officials, issued chiefly from the 16th to 15th century BC.
Hittite language
Hittite (native nešili, also Nesite, Neshite) is the oldest recorded Indo-European language, of the Anatolian branch, written in cuneiform and attested c. 1650–1180 BCE in some 30,000 tablets from Hattusa, identified as Indo-European by Hrozný in 1915.
Hittite laws
The Hittite laws, or Hittite Law Code, are a collection of about 200 legal clauses in Hittite cuneiform on two tablets, first written in Anatolia ca. 1650 BCE.
Hittite military oath
The Hittite military oath is a Hittite ritual text, cataloged as CTH 427, in which soldiers swore loyalty to the king of Hatti before the gods under curses.
Hittite rock reliefs
Hittite rock reliefs are figures of gods, kings, and princes with hieroglyphic Luwian inscriptions carved onto Anatolian cliffs and boulders, mainly in the 13th century BC.
Hittite sack of Ebla
The Hittite sack of Ebla was the destruction of the Syrian city of Ebla by Hittite forces around 1650 BC, ending its Old Syrian period; the perpetrator may have been Mursili I.
Hittite sun disk
The Hittite sun disk is a Hattian bronze ceremonial standard from the Early Bronze Age royal tombs of Alacahöyük, Turkey, now the symbol of Ankara.
Hittite treaty format
The Hittite treaty format is the fixed six-part structure of Hittite vassal treaties, in which the Great King imposed obligations confirmed by an oath before the gods.
Hittite Wars of Survival
The Hittite Wars of Survival were the Hittite state's defensive wars against the Kaška and Arzawa from about 1400 to 1350 BC, ending under Šuppiluliuma I.
Hittite–Egyptian royal marriage
The Hittite–Egyptian royal marriage, negotiated largely by Queen Puduhepa, married Ramesses II to Maathorneferure, daughter of Hattusili III, in 1245 BC, about thirteen years after their peace treaty.
Hittites
The Hittites were a Bronze Age Anatolian empire centered at Hattusa (c. 1650–1180 BC), speakers of the oldest recorded Indo-European language, known for Hrozný's 1915 decipherment, the Battle of Kadesh, the Egyptian–Hittite peace treaty, and the Late Bronze Age collapse.
Hitz FM Ghana
Hitz FM (Hitz 103.9 FM) is an Accra-based Ghanaian radio station on 103.9 MHz, owned by Multimedia Group Limited and known for its music and entertainment format.
Hiuchigatake
Hiuchigatake (燧ヶ岳, also Hiuchi) is a 2,356 m stratovolcano in Fukushima Prefecture, Japan, the highest peak of Oze National Park and northern Japan; last erupted phreatically in 1544 CE, and its debris avalanche formed Lake Ozenuma about 8,000 years ago.
HIV
HIV (human immunodeficiency virus) is a retrovirus causing AIDS; 41.0 million people lived with HIV in 2025, ART suppresses it but no cure exists, and the 2030 end-of-epidemic goal faces funding cuts.
HIV test
An HIV test is a medical diagnostic test that detects HIV infection by measuring HIV-specific antibodies, the viral p24 antigen, or viral RNA in blood, serum, plasma, or oral fluid.
HIV trial
HIV trial NCT01195077 (Dietary Algae and HIV), a University of South Carolina phase I/II study led by Jane Teas testing Undaria seaweed and Spirulina in 12 antiretroviral-naive people with HIV; found no toxicity, improved quality of life, and stable CD4 and viral load.
HIV trial in Libya
The HIV trial in Libya (1999–2007) prosecuted five Bulgarian nurses and a Palestinian doctor for infecting children with HIV at Benghazi's Al-Fateh hospital; two death sentences were overturned scientifically and ended in pardon.
HIV viral load measurement
HIV viral load measurement is a nucleic acid amplification test that quantifies HIV RNA in blood plasma, reported in copies per milliliter, to guide antiretroviral therapy and monitor treatment response.
HIV-1 protease
HIV-1 protease (HIV-1 PR) is an aspartic protease encoded by HIV-1 that cleaves viral Gag and Gag-Pol polyproteins into mature infectious virus, making it the target of ten protease inhibitors since saquinavir in 1995.
HIV-associated cancer
HIV-associated cancer: cancers occurring at elevated rates in people living with HIV, divided into AIDS-defining cancers (Kaposi sarcoma, aggressive non-Hodgkin lymphoma, cervical cancer) and non-AIDS-defining cancers, driven mainly by immunosuppression and oncogenic viruses.
HIV/AIDS
HIV is a lentivirus that causes AIDS, attacking the immune system by destroying CD4+ T cells. In 2025, 41 million people are living with the manageable chronic infection.
HIV/AIDS denialism
HIV/AIDS denialism rejects the consensus that HIV causes AIDS, claiming drugs, malnutrition, or lifestyle instead. Traced to Peter Duesberg's 1987 article; under President Mbeki it cost an estimated 330,000 lives in South Africa, and it resurged online in the COVID era.
HIV/AIDS epidemic in Southern Africa
The HIV/AIDS epidemic in Southern Africa is the world's most severe regional HIV epidemic, with South Africa alone home to about 8 million people living with HIV.
HIV/AIDS in Africa
HIV/AIDS in Africa: the world's hardest-hit regional HIV epidemic, with 64% of 41 million people living with HIV in the WHO African Region, heterosexual transmission, ART-driven life-expectancy gains, and a 2025 US funding crisis threatening PEPFAR-supported treatment.
HIV/AIDS in India
HIV/AIDS in India, also called AIDS in India, is the national HIV epidemic: 2.561 million people living with HIV in 2024, with adult prevalence of just 0.20%.