All articles starting with S

STEP trial (NCT03015311)

STEP (NCT03015311), Strategy of Blood Pressure Intervention in the Elderly Hypertensive Patients: Chinese randomized trial of 8,511 patients aged 60-80 testing intensive systolic target 110-<130 mm Hg versus 130-<150 mm Hg; intensive treatment cut cardiovascular events (HR 0.74; 6-year HR 0.82).

STEP trial (NCT03137368)

STEP (NCT03137368) is a Phase 3 Chinese trial comparing exemestane plus ovarian function suppression/ablation versus tamoxifen plus ovarian suppression in premenopausal ER-positive, HER2-negative breast cancer with CYP2D6*10 T/T genotype; 300 planned participants, primary endpoint disease-free survival.

Step Up (film)

Step Up is a 2006 American dance film starring Channing Tatum and Jenna Dewan, directed by Anne Fletcher and set at a Baltimore arts school.

Step Up (franchise)

Step Up: American dance film franchise created by Duane Adler, launched by Step Up (2006, Anne Fletcher, Channing Tatum, Jenna Dewan); five theatrical films plus Step Up: Year of the Dance (China, 2019) and the Step Up: High Water TV series.

Step Up (TV series)

Step Up (originally Step Up: High Water) is an American dance drama TV series based on the Step Up films, set at Atlanta's High Water performing arts school; it ran 2018-2022 on YouTube Red then Starz, 3 seasons, 30 episodes, starring Ne-Yo.

Step Up 2: The Streets

Step Up 2: The Streets (2008) is Jon M. Chu's feature directorial debut, a Step Up sequel starring Briana Evigan and Robert Hoffman about street crews competing in Baltimore's The Streets, grossing $151 million worldwide.

Step Up 3D

Step Up 3D (2010) is the third Step Up dance film, directed by Jon M. Chu, starring Rick Malambri, Sharni Vinson, and Adam Sevani; the first 3D dance drama, grossing $165.9 million worldwide.

Step Up Revolution

Step Up Revolution is a 2012 American dance drama, the fourth Step Up film, directed by Scott Speer and starring Kathryn McCormick and Ryan Guzman. Set in Miami, it follows the flash-mob crew The Mob protesting a developer's project; it grossed $35.1M domestic on a $33M budget.

Step Up: All In

Step Up: All In is a 2014 American dance film, the fifth in the Step Up series, directed by Trish Sie and set around a Las Vegas dance battle.

Step-edge epitaxy

Step-edge epitaxy is a crystal growth strategy in which atomic steps on a substrate, not just its lattice, direct the orientation of an epitaxial film, enabling wafer-scale single crystals.

Step-growth polymerization

Step-growth polymerization, also called step polymerization, is a polymerization mechanism in which monomers and oligomers of any length react together, producing polyesters and polyamides such as nylon and PET.

Oct 15, 2026

Step-recovery diode

The step-recovery diode, also called a snap-off diode, is a semiconductor diode that stores charge while forward-biased and then cuts off its reverse current almost instantly, making it useful in frequency multipliers and comb generators.

Oct 15, 2026

Step-through frame

A step-through frame is a bicycle frame with a low or absent top tube, letting riders mount by stepping through instead of swinging a leg over.

Step-Video

Step-Video is a family of open-weight video generation models released by the Chinese AI startup StepFun from February 2025, including the 30-billion-parameter text-to-video model Step-Video-T2V.

Oct 15, 2026

Step-voltage regulator

A step-voltage regulator (SVR) is a tap-changing autotransformer installed on medium-voltage distribution lines that adjusts voltage in 32 steps, boosting or bucking it up to 10%.

Stepa Stepanović

Stepa Stepanović (Степа Степановић, 1856–1929) was a Serbian field marshal who commanded the Second Army, winning the Battle of Cer in 1914 and breaking the Salonika front in 1918.

Stepan Apraksin

Stepan Apraksin (Степан Фёдорович Апраксин) was a Russian field marshal who won the Battle of Gross-Jägersdorf in 1757, then ordered a retreat that led to his arrest.

Stepan Bandera (Степан Андрійович Бандера)

Stepan Bandera (Степан Андрійович Бандера, 1909–1959), Ukrainian nationalist leader, head of the OUN(b) Banderite faction; proclaimed the 1941 Lviv Act, imprisoned by Poland and Germany, assassinated by KGB agent Stashynsky in Munich.

Stepan Makarov

Stepan Makarov (Степан Осипович Макаров) was a Russian vice-admiral, oceanographer, and polar explorer who led the first successful combat torpedo attack in 1878 and died commanding the Pacific Fleet in 1904.

Stepan Malkhasyants

Stepan Malkhasyants (Ստեփան Մալխասյանց, 1857–1947) was an Armenian philologist, linguist, and lexicographer whose four-volume Armenian Explanatory Dictionary, covering 120,000 words, won the USSR State Prize in 1946.

Stepan Oshchepkov

Stepan Oshchepkov was a Soviet sprint canoeist from Vladivostok who won the men's C-2 1,000 m gold at the 1964 Tokyo Olympics with partner Andriy Khimich.

Stepan Razin

Stepan Razin (Степан Разин), born around 1630, was a Don Cossack ataman who led the great uprising of 1670–1671, taking major Volga cities before his capture and execution in Moscow.

Stepan Veselovsky

Stepan Veselovsky (Степан Веселовский), 1876 to 1952, was a Soviet historian of Muscovite Russia and expert on feudal landholding who refused to adapt his scholarship to Stalin-era politics.

Stepanakert

Stepanakert, called Khankendi (Xankəndi) by Azerbaijan, is the main city of Nagorno-Karabakh: NKAO administrative center from 1923, renamed for Bolshevik Stepan Shaumyan, de facto capital of the unrecognized republic until Azerbaijan's September 2023 takeover.

Stepanka Hilgertova

Štěpánka Hilgertová, born 1968 in Prague and née Prošková, is a Czech slalom canoeist who won consecutive Olympic K1 golds in 1996 and 2000 across six Games.

Stepanos Asoghik

Stepanos Asoghik, also known as Stepanos Taronetsi, was a 10th- and 11th-century Armenian historian and cleric from Taron, best known for his three-book Universal History completed in 1004/5.

Stepanos Orbelian

Stepanos Orbelian (Ստեփանոս Օրբելյան; c. 1250/60–1303/04) was an Armenian historian, poet, and churchman, metropolitan of Syunik from 1286, whose History of the Province of Sisakan is the principal source for medieval Syunik.

Stepennaia kniga

The Stepennaia kniga (Степенная книга) is a Russian historical work compiled in 1560–1563 by Ivan IV's confessor Andrei, later Metropolitan Afanasii, presenting rulers in seventeen degrees.

Stepfamily

Stepfamily: a family formed when one or both partners in a couple bring children from a previous relationship; also called blended family. Covers definitions, US prevalence (42% of adults report close stepfamily ties), dynamics, and child-outcome research.