All articles starting with R
22,461 articles
Rippling muscle disease with myasthenia gravis
Rippling muscle disease with myasthenia gravis, also called acquired or immune-mediated rippling muscle disease (iRMD), is a rare acquired neuromuscular disorder combining CAV3 mutation-negative, electrically silent muscle rippling with AChR antibody-positive myasthenia gravis, first reported in 1996.
Riprap
Riprap, also called shot rock or rock armor, is a layer of large loose stone or concrete blocks placed to protect soil from erosion by water.
Ripretinib
Ripretinib, sold as Qinlock, is an oral tyrosine kinase inhibitor approved by the FDA in May 2020 for adults with advanced GIST after at least three prior kinase inhibitors.
Ripszima Szekely
Ripszima Szekely (Ripszima Mária Székely, born 12 July 1936, Budapest) is a Hungarian swimmer, 1956 Olympian (5th, 400 m freestyle), 4x100 m medley relay world record holder (4:57.8, 1955), who defected to the US after Melbourne; not Éva Székely.
RIPT trial
RIPT (NCT03070834) was a 42-patient single-center Canadian randomized feasibility trial of retrievable inferior vena cava filters versus no filter in high-risk trauma patients unable to receive anticoagulation, showing reduced unprotected time (25.5 vs 78.2 hours).
Riptide (American TV series)
Riptide (1984–1986) is an NBC detective drama created by Stephen J. Cannell and Frank Lupo, starring Perry King, Joe Penny, and Thom Bray as Vietnam-veteran private eyes working from a boat, with a pink helicopter and robot.
Riptide (Vance Joy song)
Riptide, the 2013 ukulele-led debut single by Australian singer-songwriter Vance Joy (James Keogh), from Dream Your Life Away; ARIA #6, UK #10, US Hot 100 #30, RIAA Diamond, APRA Song of the Year.
Ripuarian Franks
Ripuarian Franks (Ripuarii, Ribuarii, Rhineland Franks): Frankish group centered on Cologne on the Rhine, distinct from the Salian Franks; kings at Cologne, absorbed into Austrasia, known chiefly through the Lex Ribuaria law code.
Ripuarian language
Ripuarian (Ripuarisch, Ripoarėsch, Kölsch) is a West Central German dialect group around Cologne, Aachen, and Bonn, extending into Belgium and Dutch Limburg; about 250,000 speakers, defined by the Benrath Line isoglosses.
Ripudaman Singh
Ripudaman Singh (ਰਿਪੁਦਮਾਨ ਸਿੰਘ) was Maharaja of Nabha, a princely state in the Punjab, from 1912 until the British deposed him in 1923 after a feud with the ruler of Patiala.
Riq
The riq (رق), also spelled riqq or rik, is a small tambourine-family frame drum with paired metal jingles, a mainstay of Arab art music ensembles in Egypt, Iraq, Lebanon, Palestine, and Syria.
Riqqeh
Riqqeh, also written el-Riqqa, is an ancient Egyptian cemetery site near the mouth of the Faiyum, excavated by Reginald Engelbach at the end of 1912.
Riquelme Fillipi
Riquelme Fillipi (Riquelme Fillipi Marinho de Souza), Brazilian left winger born 2006 in Santo André; Palmeiras youth product, Brasileirão Sub-20 MVP 2025, sold to Inter Miami CF in September 2026.
Riqueval Tunnel
The Riqueval Tunnel (souterrain de Riqueval), also called the Grand Souterrain, is a 5,670-meter navigable canal tunnel on the Canal de Saint-Quentin in northern France, opened in 1810.
Riqui Puig
Riqui Puig (Ricard Puig Martí, born 1999) is a Spanish midfielder who came through Barcelona's La Masia academy, transferred to LA Galaxy in 2022, and won MLS Cup 2024.
Riri Noro
Riri Noro (野呂 莉里, Noro Riri), Japanese ice hockey forward born 2004 in Kushiro, Hokkaido; twin of Rio Noro. Gold at 2020 Youth Olympics, 2025 Harbin Asian Winter Games gold, 9th at 2026 Winter Olympics with Japan.
Riria.
Riria. (りりあ。) is a Japanese singer-songwriter on Toy's Factory's VIA label, known for the 2021 viral breakup song「私じゃなかったんだね。」and for voicing Uta in the 2022 anime film Bubble.
Rirkrit Tiravanija
Rirkrit Tiravanija (ฤกษ์ฤทธิ์ ตีระวนิช), born in Buenos Aires in 1961, is a Thai contemporary artist whose installations and cooking works treat human interaction as the material of art.
RIS (file format)
RIS is a plain-text bibliographic interchange format introduced in 1988 by Research Information Systems, used behind most journal citation exports and read by reference managers like EndNote, Zotero, and Mendeley.
RISA (software)
RISA is a suite of structural engineering software for the analysis and design of buildings, foundations, and connections, developed in California and part of the Nemetschek Group.
Risa Hontiveros
Risa Hontiveros (Ana Theresia Navarro Hontiveros-Baraquel), Filipino senator and Akbayan party-list representative, author of the Expanded Maternity Leave and Mental Health Laws, Senate minority figure and prospective 2028 presidential candidate.
Risa J. Lavizzo-Mourey
Risa J. Lavizzo-Mourey is an American geriatrician who was president and CEO of the Robert Wood Johnson Foundation from 2003 to 2017, its first woman and first African American leader.
Risa Mei
Risa Mei is an American voice actress and singer in Los Angeles, English voice of Sangonomiya Kokomi (Genshin Impact), Burnice White (Zenless Zone Zero), Lynx (Honkai: Star Rail), and Beelzebub (Sand Land).
Risa Taneda (種田梨沙)
Risa Taneda (種田梨沙, born 1988) is a Japanese voice actress and singer from Tokyo with Osawa, known for Saki Watanabe in From the New World, Rize in Is the Order a Rabbit?, Mirai Kuriyama, Ai Mizuno in Zombieland Saga, and her 2016–17 treatment hiatus and return.
Risa Wechsler
Risa Wechsler is an American theoretical cosmologist at Stanford University and SLAC National Accelerator Laboratory known for work on the galaxy–halo connection, dark matter, and dark energy.
Risako Kawai
Risako Kawai (川井梨紗子, later Kinjo), Japanese freestyle wrestler born 1994 in Ishikawa; two-time Olympic champion (Rio 2016 63 kg, Tokyo 2020 57 kg), four-time world champion, retired October 2025.
Risala fi l-Sahaba
Risala fi l-Sahaba (رسالة الصحابة, "Epistle Concerning the Entourage") is a treatise by the secretary Ibn al-Muqaffa advising Caliph al-Mansur on the young Abbasid caliphate's political ills.
Risala fi-l-qada wa-l-hisba
Risala fi-l-qada wa-l-hisba (رسالة في القضاء والحسبة) is an early 12th-century Arabic treatise by the Sevillian jurist Ibn Abdun on the duties of Seville's market inspector.
Risalat al-Tawhid
Risalat al-Tawhid ("Treatise on Divine Unity") is a work of Islamic theology by the Egyptian reformer Muhammad Abduh, first printed in 1897 and his best-known theological writing.
Risaletü'n-Nushiyye
Risaletü'n-Nushiyye ("Book of Counsels") is a didactic Sufi advice poem in mesnevi form attributed to the Anatolian poet Yunus Emre, dated by its own verses to 1307–08 and regarded as the first Turkish nasihatname in Anatolia.