Tumbes, city, northwestern Peru. It is located on the Pacific coastal plain and on high banks overlooking the Tumbes River, 20 miles (30 km) from the Ecuadorian border. In 1532 Francisco Pizarro landed at what is now Puerto Pizarro (the port for Tumbes, 12 miles [19 km] northwest), to begin his

Sangoan industry, sub-Saharan African stone tool industry of Acheulean derivation dating from about 130,000 to 10,000 years ago. It is more or less contemporaneous with the Fauresmith industry of southern Africa. The Sangoan industry was discovered in 1920 at Sango Bay, Uganda, and is also found in

Silurian Period: Clastic wedges: …belonging to the Upper Silurian Tumblagooda Sandstone were derived from a Precambrian massif called the Yilgarn Block.

rocket: Tumble mustard, or tall rocket (S. altissimum), is also naturalized in North America and forms a tumbleweed as it dries. London rocket (S. irio) has been used in folk medicine and is considered an invasive species in many places outside its native Eurasian range.

windmill grass: truncata) and the North American tumble windmill grass (C. verticillata) are perennial species of waste areas. Rhodes grass (C. gayana), a tufted perennial native to South Africa, has been introduced into other areas of the world for forage.

dung beetle, (subfamily Scarabaeinae), any of a group of beetles in the family Scarabaeidae (insect order Coleoptera) that forms manure into a ball using its scooperlike head and paddle-shaped antennae. In some species the ball of manure can be as large as an apple. In the early part of the summer

lock: Development of modern types.: …in England, patented a double-acting tumbler lock. A tumbler is a lever, or pawl, that falls into a slot in the bolt and prevents it being moved until it is raised by the key to exactly the right height out of the slot; the key then slides the bolt. The…

poultry processing: Tumbling and massaging: A tumbler is a slowly rotating drum that works the meat into a smooth mixture. A massager is a large mixing chamber that contains a number of internal paddles. Cured turkey products (i.e., treated with sodium nitrite), such as turkey ham and turkey pastrami, are often…

electric switch: …of switches; a common type—the toggle, or tumbler, switch—is widely used in home lighting and other applications. The so-called mercury, or “silent,” switch is used extensively for controlling home lighting circuits. The oil switch has its live parts immersed in oil to reduce arcing. The aggregate of switching or circuit-breaking…

tumbleweed, plant that breaks away from its roots and is driven about by the wind as a light rolling mass, scattering seeds as it goes. Examples include pigweed (Amaranth retroflexus, a widespread weed in the western United States) and other amaranths, tumbling mustard, Russian thistle, the steppe

Elton John: …“Burn Down the Mission” on Tumbleweed Connection (1971) and “Funeral for a Friend/Love Lies Bleeding” on Goodbye Yellow Brick Road (1973). Other notable songs from this period included “Rocket Man” on Honky Château (1972) and “Don’t Let the Sun Go Down on Me” on Caribou (1974).

Janet McTeer: Films: … nominations for her roles in Tumbleweeds (1999), as a vagabond single mother, and Albert Nobbs (2011), as a woman who disguises herself as a man in 19th-century Ireland. She appeared in a number of other motion pictures, including the thriller Half Moon Street (1986); Carrington (1995), in which she played…

tumbling, execution of acrobatic movements such as rolls, twists, handsprings, or somersaults on floor mats or on the ground. Unlike most other disciplines in gymnastics, tumbling does not involve the use of apparatuses. The activity dates back to ancient China, Egypt, and Greece. Tumbling was

gemstone: …7 or less) may be tumbled; that is, they may be placed in a cylinder with abrasive grit and water and the cylinder rotated about its long axis. The stones become polished but are irregular in shape. Second, the same kinds of gemstones may instead be cut en cabochon (i.e.,…

gemstone: …may be placed in a cylinder with abrasive grit and water and the cylinder rotated about its long axis. The stones become polished but are irregular in shape. Second, the same kinds of gemstones may instead be cut en cabochon (i.e., with a rounded upper surface and a flat underside)…

tumbling flower beetle, (family Mordellidae), any of about 1,500 species of beetles (insect order Coleoptera) named for their jumping, turning, and tumbling motion when disturbed or caught. These black beetles are small, usually between 3 and 7 mm (0.1 to 0.3 inch) in length, and are most often

Claes Oldenburg: Their final collaboration, Tumbling Tacks, was unveiled on the grounds of the Kistefos Museum, Jevnaker, Norway, in 2009, several months after van Bruggen died from breast cancer. In 2011 Oldenburg created his first independent project in 30 years, Paint Torch, which was installed in Philadelphia. He then turned…

soapwort: Major species: A trailing species known as rock soapwort, or tumbling Ted (S. ocymoides), has several cultivated varieties with pink to deep red flower clusters. Pygmy pink (S. pumilio) is a very small alpine specimen sometimes grown in rock gardens.

Gene Autry: …of hit recordings, including “Tumbling Tumbleweeds” (1935) and his signature song, “Back in the Saddle Again” (1939). He recorded more than 600 songs altogether, many of which he wrote or cowrote. By 1940 he was one of the top movie and music stars in the country. The Gene Autry…

Eric Fischl: His sculpture Tumbling Woman (2002) generated some controversy when it was first exhibited: commemorating the bodies that had so recently fallen from the World Trade Center in the terrorist attack of September 11, 2001, it was felt to touch too raw a wound.

Tumblr, social media microblogging site founded in 2007 by American Web developer David Karp. Tumblr is notable for its customizable interface, which allows for easy sharing of multiple forms of content, including images, text, music, and short-form blog posts, on users’ “tumbleblogs”—the site’s

Tumbuka, a people who live on the lightly wooded plateau between the northwestern shore of Lake Nyasa (Lake Malaŵi) and the Luangwa River valley of eastern Zambia. They speak a Bantu language closely related to those of their immediate neighbours, the lakeside Tonga, the Chewa, and the Senga. The

tumbrel, French two-wheeled dumpcart or wagon designed to be drawn by a single draft animal. Originally used to carry agricultural supplies, it was most often associated with the cartage of animal manure. It was also used, however, by artillery units to carry tools and ammunition, and during the

tumbrel, French two-wheeled dumpcart or wagon designed to be drawn by a single draft animal. Originally used to carry agricultural supplies, it was most often associated with the cartage of animal manure. It was also used, however, by artillery units to carry tools and ammunition, and during the

Oceanic art and architecture: New Britain: …male (dukduk) and female (tubuan) masks. Both types are cone-shaped and were constructed of cane and fibre. The dukduk is taller than the tubuan and is faceless. The tubuan has circular eyes and a crescent-shaped mouth painted on a dark background. Both masks have short, bushy capes of leaves.

Tumbuka, a people who live on the lightly wooded plateau between the northwestern shore of Lake Nyasa (Lake Malaŵi) and the Luangwa River valley of eastern Zambia. They speak a Bantu language closely related to those of their immediate neighbours, the lakeside Tonga, the Chewa, and the Senga. The

Tibet: The Dge-lugs-pa (Yellow Hat sect): …invited to visit the powerful Tümed Mongol leader Altan Khan, with whom he revived the patron-priest relationship that had existed between Kublai Khan and ’Phags-pa. From this time dates the title of Dalai (“Oceanwide”) Lama, conferred by Altan and applied retrospectively to the two previous hierarchs. The holder is regarded…

Tumen River, river, forming the northeastern frontier of North Korea with China and Russia. The Tumen originates on Mount Paektu (Chinese: Baitou; 9,022 feet [2,750 metres]), the highest peak of the Changbai (Korean: Chanbaek) Mountains along the China-Korea border. It then flows with its short

Tumen River, river, forming the northeastern frontier of North Korea with China and Russia. The Tumen originates on Mount Paektu (Chinese: Baitou; 9,022 feet [2,750 metres]), the highest peak of the Changbai (Korean: Chanbaek) Mountains along the China-Korea border. It then flows with its short

Vidya Balan: Later career: …did have a hit with Tumhari Sulu (2017; “Your Sulu”), and her performance earned her another Filmfare Award. In 2019 Balan appeared in NTR: Kathanayakudu and NTR: Mahanayakudu, both of which were biopics about Indian actor, director, and politician Nandamuri Taraka Rama Rao.

Tumakuru, city, southeastern Karnataka state, southern India. It lies in an upland region at the foot of Devarayadurga Hill, which has a picturesque health resort at an elevation about 3,900 feet (1,190 metres). The city, a road and rail centre, has a cluster of small-scale industries, which

Tummel, river and loch (lake), Scotland. The River Tummel rises on Rannoch Moor near the southern border of the Highland council area and drains via Loch Laidon through the heavily glaciated east-west valley containing the ribbon lakes (Lochs Rannoch and Tummel, in the Perth and Kinross council

Tummel: Loch Tummel is a popular scenic spot, as are the Falls of Tummel near the confluence of the Rivers Tummel and Garry.

Borscht Belt: Entertainment: …jack-of-all-trades social director called a tummler (from the Yiddish tumler, literally, “one who makes a racket”) would lead games such as Simon Says, tell occasional jokes, and act as the resident master of ceremonies. There was also a steady stream of popular performers, both family-friendly and more adult-oriented.

tumour, a mass of abnormal tissue that arises without obvious cause from preexisting body cells, has no purposeful function, and is characterized by a tendency to independent and unrestrained growth. Tumours are quite different from inflammatory or other swellings because the cells in tumours are

gall, an abnormal, localized outgrowth or swelling of plant tissue caused by infection from bacteria, fungi, viruses, and nematodes or irritation by insects and mites. See black knot; cedar-apple rust; clubroot; crown

tumour, a mass of abnormal tissue that arises without obvious cause from preexisting body cells, has no purposeful function, and is characterized by a tendency to independent and unrestrained growth. Tumours are quite different from inflammatory or other swellings because the cells in tumours are

cancer: Molecular evaluation: …Those substances are known as tumor markers. The type and level of a specific tumor marker can provide insight into whether treatment is working and whether a tumor has returned. In general, a rising level of a tumor marker in the blood indicates the regrowth of the tumor. Tumor markers…

blood disease: Leukemia: …the therapy was associated with tumour lysis syndrome (a sometimes severe metabolic disturbance caused by the dying off of massive numbers of cancer cells), it was hailed at the time of its report in 2011 as a major breakthrough in the treatment of leukemia.

cancer: Molecular evaluation: …Those substances are known as tumor markers. The type and level of a specific tumor marker can provide insight into whether treatment is working and whether a tumor has returned. In general, a rising level of a tumor marker in the blood indicates the regrowth of the tumor. Tumor markers…

tumour necrosis factor (TNF), a naturally occurring protein that is produced in the human body by the phagocytic cells known as macrophages. (The latter can engulf and destroy bacteria, viruses, and other foreign substances.) TNF is produced by macrophages when they encounter the poisonous

inflammatory bowel disease: …mutation of a gene called TNFSF15 (tumour necrosis factor ligand superfamily member 15), which is involved in suppressing inflammation, has been identified as an ethnic-specific IBD susceptibility gene. In addition, variation of a gene called IL23R (interleukin 23 receptor), particularly in persons of northern European descent, has been associated with…

cancer registry, surveillance system that allows for the collection, storage, and analysis of information on cancer patients. A cancer registry is the chief means by which information is systematically collected about persons diagnosed with cancer. Depending on the resources available, the

tumour suppressor gene, any of a class of genes that are normally involved in regulating cell growth but that may become cancer-causing when damaged. Tumour suppressor genes encode for proteins that are involved in inhibiting the proliferation of cells, which is crucial to normal cell development

cancer: Tumor-associated antigens: Tumor-associated antigens on tumor cells are not qualitatively different in structure from antigens found on normal cells, but they are present in significantly greater amounts. Because of their abundance, they are often shed into the bloodstream. Elevated levels of those antigens can be…

cancer: Tumor-specific antigens: Tumor-specific antigens represent fragments of novel peptides (small proteins) that are presented at the cell surface bound to the major histocompatibility complex class I molecules. In that form they are recognized by T lymphocytes (T cells) and eliminated. The novel peptides are derived…

mesothelioma: Survival prediction and treatment: Tumour-treating field (TTF) therapy, in which an electric field is used to impair tumour cell division, may be given in combination with certain chemotherapeutic agents to combat malignant pleural mesothelioma.

Tumuc-Humac Mountains, mountain range that forms the Brazilian border with French Guiana and Suriname. An eastern extension of the Acarai Mountains, the range extends for about 180 miles (290 km) in an east-west direction and attains elevations of 2,800 feet (850 m). The range constitutes part of

Tumuc-Humac Mountains, mountain range that forms the Brazilian border with French Guiana and Suriname. An eastern extension of the Acarai Mountains, the range extends for about 180 miles (290 km) in an east-west direction and attains elevations of 2,800 feet (850 m). The range constitutes part of

Amapá: In 2002 Tumucumaque National Park—the world’s largest tropical forest park, with an area of about 15,000 square miles (39,000 square km)—was created. The park is part of the Amapá Biodiversity Corridor, a protected area that was established in 2003. The corridor covers more than 70 percent of…

Tumuc-Humac Mountains, mountain range that forms the Brazilian border with French Guiana and Suriname. An eastern extension of the Acarai Mountains, the range extends for about 180 miles (290 km) in an east-west direction and attains elevations of 2,800 feet (850 m). The range constitutes part of

barrow, in England, ancient burial place covered with a large mound of earth. In Scotland, Ireland, and Wales the equivalent term is cairn. Barrows were constructed in England from Neolithic (c. 4000 bc) until late pre-Christian (c. ad 600) times. Barrows of the Neolithic Period were long and

history of Europe: The chronology of the Metal Ages: … phases or into the Unetician, Tumulus, and Urnfield cultures. Synchronizations of the more detailed local subdivisions, which were based on typology of metal objects and cross-associations, have employed schemes of Paul Reinecke and Oscar Montelius. Oscar Montelius’ chronology was developed on the basis of Scandinavian bronze objects and resulted in…

Tumulus period, early period (c. ad 250–552) of tomb culture in Japan, characterized by large earthen keyhole-shaped burial mounds (kofun) surrounded by moats. The largest of the 71 known tumuli, 1,500 feet (457 m) long and 120 feet (36 m) high, lie in the Nara (Yamato) Basin of Nara prefecture.

Tumut, town, southeastern New South Wales, Australia. It lies along the Tumut River, at the northern approach to the Australian Alps. The river valley, explored in 1824 by Hamilton Hume and William Hovell, began to be settled four years later. The town was surveyed in 1848. Its name is derived from

Tumut River, river, south New South Wales, Australia. It rises on the northwestern slopes of the Snowy Mountains and flows 90 miles (145 km) to join the Murrumbidgee River, east of the town of Gundagai. The Tumut River is a major part of the Snowy Mountains Hydroelectric Project. Its upper reaches

tardigrade: …suspended animation called the “tun” state—in which the body dries out and appears as a lifeless ball (or tun). In this state their metabolism may decline to as little as 0.01 percent of its normal rate. Tardigrades can survive as tuns for years, or even decades, to wait out…

chronology: Maya and Mexican: …by those years but by tuns (360 days) and their multiples of 20: katuns (20 tuns), baktuns (400 tuns), pictuns (8,000 tuns), calabtuns (160,000 tuns), and kinchiltuns (3,200,000). In practice, the last three were seldom used. The tun comprised 18 uinals, each of 20 kins (days), but these did not…

Hussein Onn, was a Malaysian politician and prime minister (1976–81) of a multiracial coalition government. During World War II Hussein fought with the Indian army and with the British forces that in 1945 freed Malaya from Japanese occupation. In 1946 he joined his politician father Onn Bin Jaafar

gastropod: Classification: …sand; includes helmet shells (Cassidae), tun shells (Doliidae), frog shells (Bursidae), triton shells (Cymatiidae), and fig shells (Ficidae); frog and triton shells often live in rocky areas; most species large in size. Suborder Neogastropoda (Stenoglossa) Carnivorous or scavengers with rachiglossate (with 3 denticles)

Inoue Yasushi: …other successes are the novel Tonkō (1959; Tun-huang), which re-created 11th-century China and centred on the Buddhist treasure troves hidden in the Tun-huang (Dunhuang) caves, as well as Hyōheki (1956; “Wall of Ice”), Futo (1963; Wind and Waves), and Saiiki monogatari (1969; Journey Beyond Samarkand). His short stories are collected…

Dunhuang, city, western Gansu sheng (province), northwestern China. Situated in an oasis in the Gansu-Xinjiang desert region, it is at the far western limit of traditional Chinese settlement along the Silk Road across Central Asia. Dunhuang was the first trading town reached by foreign merchants

tuna, (genus Thunnus), any of seven species of oceanic fishes, some very large, that constitute the genus Thunnus and are of great commercial value as food. They are related to mackerels and are placed with them in the family Scombridae (order Perciformes). Tunas vary considerably, both within and

Melanesian languages: …on Santa Isabel (Ysabel Island); Tolai, a widely used missionary language in New Britain and New Ireland; Yabêm and Graged, lingua francas of the Lutheran Mission in the Madang region of Papua New Guinea; and Mota, a widely used lingua franca and literary language of the Melanesian Mission in northern…

Bill Parcells is an American professional gridiron football coach and executive who coached the New York Giants of the National Football League (NFL) to Super Bowl victories in 1987 and 1991. Parcells spent most of his childhood in New Jersey, where he acquired the nickname “Bill” from teachers who

spectroscopy: Lasers for RIS: …components of RIS methods are tunable lasers, which can be of either the pulsed or the continuous-wave variety. Pulsed lasers are more frequently used since they can add time resolution to a measurement system. In addition, pulsed lasers produce high peak power, permitting the efficient use of nonlinear optics to…

electronics: Oscillation: In a tunable oscillator, such as that required for a radio receiver, the parallel combination of an inductor and a capacitor is a tuned circuit: at one frequency, and only one, the inductive effects and the capacitive effects balance. At this frequency the voltage developed across the…

Ras al-Khaimah: …over the small islands of Greater and Lesser Ṭunb (Ṭunb al-Kubrā and Ṭunb al-Ṣughrā), in the gulf about 50 miles (80 km) northwest of Ras al-Khaimah town; these islands had long been claimed by both Ras al-Khaimah and Iran. On November 30, 1971, Iranian troops landed on Greater Ṭunb and…

Ras al-Khaimah: …small islands of Greater and Lesser Ṭunb (Ṭunb al-Kubrā and Ṭunb al-Ṣughrā), in the gulf about 50 miles (80 km) northwest of Ras al-Khaimah town; these islands had long been claimed by both Ras al-Khaimah and Iran. On November 30, 1971, Iranian troops landed on Greater Ṭunb and met armed…

Tunbridge Wells: The making of Tunbridge ware—i.e., tables, boxes, and toys made of such veneered hardwoods as beech, sycamore, and cherry—declined during the 20th century. The Tunbridge Wells Museum holds the largest collection of Tunbridge ware in the world. Area borough, 128 square miles (331 square km). Pop. (2001) town,…

Tunbridge Wells: town and borough (district), administrative and historic county of Kent, southeastern England. It lies about 30 miles (48 km) southeast of London.

Tunbridge Wells, town and borough (district), administrative and historic county of Kent, southeastern England. It lies about 30 miles (48 km) southeast of London. The borough encompasses a largely rural area in the southwestern part of Kent. The town of Royal Tunbridge Wells, now included in the

Kathmandu: To the east is Tundi Khel, the parade ground, in the centre of which is a stone platform surrounding a tree, from which important government pronouncements were formerly made first to the army. Between it and the city is a tall watchtower built by Bhim Sen Thapa, a former…

steel: Tundish, mold, and secondary zone: The key control parameter of continuous casting is matching the flow of liquid steel into the mold with the withdrawal speed of the strand out of the mold. The control of flow rates is accomplished by the tundish, a small,…

tundra, a major zone of treeless level or rolling ground found in cold regions, mostly north of the Arctic Circle (Arctic tundra) or above the timberline on high mountains (alpine tundra). Tundra is known for large stretches of bare ground and rock and for patchy mantles of low vegetation such as

tundra climate, major climate type of the Köppen classification characterized by sub-freezing mean annual temperatures, large annual temperature ranges (but not as large as in the adjacent continental subarctic climate), and moderately low precipitation. The tundra climate region occurs between 60°

birch: Major species: Bog birch (B. glandulosa) of North America, also called tundra dwarf birch or resin birch, and dwarf birch, or dwarf Arctic birch (B. nana), native to most far northern areas of the world, are small alpine and tundra shrubs commonly known as ground birch. Both…

glacial landform: Permafrost, patterned ground, solifluction deposits, and pingos: …to their sizes to produce patterned ground. Circular arrangements of the larger rocks are termed stone rings. When neighbouring stone rings coalesce, they form polygonal stone nets. On steeper slopes, stone rings and stone nets are often stretched into stone stripes by slow downhill motion of the soggy active layer…

reindeer: …are two varieties, or ecotypes: tundra reindeer and forest (or woodland) reindeer. Tundra reindeer migrate between tundra and forest in huge herds numbering up to half a million in an annual cycle covering as much as 5,000 km (3,000 miles). Forest reindeer are much less numerous.

whistling swan, (Cygnus columbianus), species of North American swan that calls with a soft musical note. It has a black bill, usually with a small yellow spot near the eye. It breeds in the Arctic tundra and winters in shallow fresh or salt water, especially along eastern and western U.S.

Paleo-Siberian languages: Yukaghir: …about equally into two enclaves: Tundra Yukaghir (also called Northern Yukaghir) in the Sakha republic (Yakutia), near the estuary of the Indigirka River; and Kolyma, or Forest, Yukaghir (also called Southern Yukaghir) along the bend of the Kolyma River. Extinct earlier dialects or languages related to Yukaghir are Omok and…

Bulgaria: Drainage: Arda, Tundzha, and Yantra. Overall, more than half of the runoff drains to the Black Sea, and the rest flows to the Aegean Sea.

tune family, in music, group of melodies interrelated by melodic correspondence, particularly in general melodic contour, important intervals, and prominent accented tones. There may be differences of rhythmic pattern, mode, and text among melodies within a group. Such groups of related melodies

Tune Stone, 5th-century monument bearing the most important Norwegian runic inscription, written vertically on two sides of the stone. Discovered in 1627 in southeastern Norway, it is now in Oslo. Authorities do not agree on the translation, but it is clear that WiwaR carved the runes in memory of

tuned circuit, any electrically conducting pathway containing both inductive and capacitive elements. If these elements are connected in series, the circuit presents low impedance to alternating current of the resonant frequency, which is determined by the values of the inductance and capacitance,

glass harmonica, musical instrument consisting of a set of graduated, tuned glass bowls sounded by the friction of wetted fingers on their rims. It was invented by Benjamin Franklin and was derived from the vérillon (musical glasses), a set of glasses, holding different amounts of water and thus

electromechanical transducer: Electromagnetic speakers: The tuned port or bass reflex enclosure achieves greater efficiency and extends the bass frequency range by carefully adjusting the shape and position of a hole or tube connecting the inside of the speaker box with the outside. The volume of the box thus acts as a type of…

Ernesto Sábato: The Outsider) won Sábato national and international notice. The protagonist of the novel is a typical existential antihero who is unable to communicate with anyone. Faced with the absurdity of the human condition, he withdraws from society. Sábato subsequently published nonfiction works such as Hombres…

television: Basic receiver circuits: The channel-switching mechanism (tuner) of the receiver connects this amplifier to one of several individual circuits, each circuit tuned to its respective channel. The amplifier magnifies the voltages of the incoming picture and sound carriers and their side bands in the desired channel by about 10 times, and…

Dong, an ethnic minority of China found in southeastern Guizhou province and in neighbouring Zhuang Autonomous Region of Guangxi and Hunan province. According to most linguists the Dong speak a Kam-Sui language that is closely related to the Tai languages, and they call themselves Kam. The Dong

Dong Qichang was a Chinese painter, calligrapher, and theoretician who was one of the finest artists of the late Ming period. The most distinguished connoisseur of his day, Dong Qichang set forward ideas that have continued to influence Chinese aesthetic theory. Dong Qichang was born to a poor but

Tung Chee-hwa is a Chinese businessman and politician and, upon the completion of the handover of Hong Kong back to China on July 1, 1997, he became the first chief executive (1997–2005) of the Hong Kong Special Administrative Region (S.A.R.) of China. Tung was the son of C.Y. Tung, founder of

Tung Chee-hwa is a Chinese businessman and politician and, upon the completion of the handover of Hong Kong back to China on July 1, 1997, he became the first chief executive (1997–2005) of the Hong Kong Special Administrative Region (S.A.R.) of China. Tung was the son of C.Y. Tung, founder of

Tung Chee-hwa is a Chinese businessman and politician and, upon the completion of the handover of Hong Kong back to China on July 1, 1997, he became the first chief executive (1997–2005) of the Hong Kong Special Administrative Region (S.A.R.) of China. Tung was the son of C.Y. Tung, founder of

Dong Jin, second phase of the Jin dynasty (265–420 ce), ruling China from 317 to 420 ce and forming one of the Six

Dong Zhuo was a general whose seizure of power and tyrannical rule ended the Han dynasty (206 bce–220 ce) and divided the Chinese empire. In 190 ce Dong Zhuo burned Luoyang, the capital, and removed himself and the emperor to the ancient capital of Chang’an (now Xi’an). At his fief he built the

Dong Zhongshu was a scholar instrumental in establishing Confucianism in 136 bce as the state cult of China and as the basis of official political philosophy—a position it was to hold for 2,000 years. As a philosopher, Dong merged the Confucian and Yinyang schools of thought. As a chief minister to

East China Sea, arm of the Pacific Ocean bordering the East Asian mainland and extending northeastward from the South China Sea, to which it is connected by the shallow Taiwan Strait between Taiwan and mainland China. The East China Sea and the South China Sea together form the China Sea. The East

China: Dong (Eastern) Han: The Han house was restored by Liu Xiu, better known as Guangwudi, who reigned from 25 to 57 ce. His claim had been contested by another member of the Liu house—Liu Xuan, better known as Liu Gengshi—who had been actually enthroned for…

tung oil, pale-yellow, pungent drying oil obtained from the seeds of the tung tree. On long standing or on heating, tung oil polymerizes to a hard, waterproof gel that is highly resistant to acids and alkalies. It is used in quick-drying varnishes and paints, as a waterproofing agent, and in making