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Khao Sam Kaeo
Khao Sam Kaeo () is an archaeological site in Thailand's Chumphon province. It is located in Na Cha-ang subdistrict of Mueang Chumphon district, just north of the town of Chumphon, on the east coast of the Malay Peninsula, at the Kra Isthmus. Dated 400–100 BCE, Khao Sam Kaeo served as an extremely important port, as well as a crossroads for Asian connection and interaction, as it sat between the cultural regions of the South China Sea and the Bay of Bengal. There is evidence that material had come from the South China Sea, the Philippines, and Taiwan—all part of the maritime silk road of the time—proving the important technological and cultural connections between the site and these locations. This not only reveals the fact that people from across Asia ended up in Khao Sam Kaeo, but it also supports the idea that there was a transfer of ideas. When reviewing the material culture found at Khao Sam Kaeo, the transfer of ideas and trans-Asian connection becomes abundantly clear, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bead Production KSK
A bead is a small, decorative object that is formed in a variety of shapes and sizes of a material such as stone, bone, shell, glass, plastic, wood, or pearl and with a small hole for Yarn, threading or stringing. Beads range in size from under 1 Millimetre, mm to over 1 Centimetre, cm in diameter. Beads represent some of the earliest forms of jewellery, with a pair of beads made from ''Nassarius'' sea snail shells dating to approximately years ago thought to be the earliest known example.[1][2] Beadwork is the art or craft of making things with beads. Beads can be woven together with specialized Yarn, thread, strung onto thread or soft, flexible wire, or adhered to a surface (e.g. Cloth, fabric, clay). Etymology The word "bead" derives from Old English ''gebed'', originally meaning "prayer", until transferred to small globular objects. This refers to the use of beads for counting repetitions of prayers, as in Christian Pater Noster cords and Rosary, rosaries. Types Bea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tabon Caves
The Tabon Caves is a cave system located in Lipuun Point, Panitian, Quezon, Palawan in the Philippines. Dubbed as the country's "cradle of civilization", it is a site of archaeological importance due to the number of jar burials and prehistoric human remains found starting from the 1960s, most notably the Tabon Man. The system is a part of the Lipuun Point Reservation, which has been protected by the Philippine government as a museum reservation to protect the caves and its immediate vicinity from deforestation and to preserve the cultural artifacts present there. The caves are named after the Tabon scrubfowl. It is bordered on the south by the town proper of Quezon, Panitian on the west, and the South China Sea on the north and east. Out of 215 known caves, 29 have been fully explored, with seven of them publicly accessible. Other excavated, unexamined remains are stored onsite. In 2006, the site, collectively named as ''Tabon Cave Complex and all of Lipuun'', was added to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lapidary
Lapidary () is the practice of shaping rock (geology), stone, minerals, or gemstones into decorative items such as cabochons, engraved gems (including cameo (carving), cameos), and faceted designs. A person who practices lapidary techniques of cutting, grinding, and polishing is known as a lapidary or lapidarist. Hardstone carving requires specialized carving techniques. In modern contexts, a gemcutter is a person who specializes in cutting diamonds, but in older contexts the term refers to artists who produced hardstone carvings; engraved gems such as jade carvings, a branch of miniature sculpture or ornament in gemstone. By extension, the term ''lapidary'' has sometimes been applied to collectors of and dealers in gems, or to anyone who is knowledgeable in precious stones. Etymology The etymological root of the word ''lapidary'' is the Latin word , meaning "stone".Douglas Harper (2014)Lapidary Online Etymology Dictionary In the 14th century, the term evolved from , meanin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cold Working
In metallurgy, cold forming or cold working is any metalworking process in which metal is shaped below its recrystallization temperature, usually at the ambient temperature at or near room temperature. Such processes are contrasted with hot working techniques like hot rolling, forging, welding, etc. The same or similar terms are used in glassmaking for the equivalents; for example cut glass is made by "cold work", cutting or grinding a formed object. Cold forming techniques are usually classified into four major groups: squeezing, bending, drawing, and shearing. They generally have the advantage of being simpler to carry out than hot working techniques. Unlike hot working, cold working causes the crystal grains and inclusions to distort following the flow of the metal; which may cause work hardening and anisotropic material properties. Work hardening makes the metal harder, stiffer, and stronger, but less plastic, and may cause cracks of the piece. The possible us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hot Working
In metallurgy, hot working refers to processes where metals are plastically deformed above their recrystallization temperature. Being above the recrystallization temperature allows the material to recrystallize during deformation. This is important because recrystallization keeps the materials from strain hardening, which ultimately keeps the yield strength and hardness low and ductility high.Degarmo, p. 373. This contrasts with cold working. Many kinds of working, including rolling, forging, extrusion, and drawing, can be done with hot metal. Temperature The lower limit of the hot working temperature is determined by its recrystallization temperature. As a guideline, the lower limit of the hot working temperature of a material is 60% its melting temperature (on an absolute temperature scale). The upper limit for hot working is determined by various factors, such as: excessive oxidation, grain growth, or an undesirable phase transformation. In practice materials are usua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glass Artifacts KSK
Glass is an amorphous ( non-crystalline) solid. Because it is often transparent and chemically inert, glass has found widespread practical, technological, and decorative use in window panes, tableware, and optics. Some common objects made of glass are named after the material, e.g., a "glass" for drinking, "glasses" for vision correction, and a "magnifying glass". Glass is most often formed by rapid cooling (quenching) of the molten form. Some glasses such as volcanic glass are naturally occurring, and obsidian has been used to make arrowheads and knives since the Stone Age. Archaeological evidence suggests glassmaking dates back to at least 3600 BC in Mesopotamia, Egypt, or Syria. The earliest known glass objects were beads, perhaps created accidentally during metalworking or the production of faience, which is a form of pottery using lead glazes. Due to its ease of formability into any shape, glass has been traditionally used for vessels, such as bowls, vases, bottles, j ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Óc Eo
Óc Eo (Vietnamese language, Vietnamese) is an archaeological site in modern-day Óc Eo communes of Vietnam, commune of Thoại Sơn District in An Giang Province of southern Vietnam. Located in the Mekong Delta, Óc Eo was a busy port of the kingdom of Kingdom of Funan, Funan between the 2nd century BC and 12th century AD and it may have been the port known to the Ancient Greece, Greeks and Ancient Rome, Romans as Cattigara. Scholars use the term Óc Eo culture to refer to the archaeological culture of the Mekong Delta that is typified by the artifacts recovered at Óc Eo through archaeological investigation. Archaeological site Excavation at Óc Eo began on 10 February 1942, after French archaeologists had discovered the site through the use of aerial photography. The first excavations were led by Louis Malleret, who identified the site as the place called Cattigara by Roman merchants in the first centuries of the Roman Empire. The site covers 450 hectares. Óc Eo is situated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slag
The general term slag may be a by-product or co-product of smelting (pyrometallurgical) ores and recycled metals depending on the type of material being produced. Slag is mainly a mixture of metal oxides and silicon dioxide. Broadly, it can be classified as ferrous (co-products of processing iron and steel), ferroalloy (a by-product of ferroalloy production) or non-ferrous/ base metals (by-products of recovering non-ferrous materials like copper, nickel, zinc and phosphorus). Within these general categories, slags can be further categorized by their precursor and processing conditions (e.g., blast furnace slags, air-cooled blast furnace slag, granulated blast furnace slag, basic oxygen furnace slag, and electric arc furnace slag). Slag generated from the EAF process can contain toxic metals, which can be hazardous to human and environmental health. Due to the large demand for ferrous, ferralloy, and non-ferrous materials, slag production has increased throughout the years des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ingots
An ingot is a piece of relatively pure material, usually metal, that is cast into a shape suitable for further processing. In steelmaking, it is the first step among semi-finished casting products. Ingots usually require a second procedure of shaping, such as cold/hot working, cutting, or milling to produce a useful final product. Non-metallic and semiconductor materials prepared in bulk form may also be referred to as ingots, particularly when cast by mold based methods. Precious metal ingots can be used as currency (with or without being processed into other shapes), or as a currency reserve, as with gold bars. Types Ingots are generally made of metal, either pure or alloy, heated past its melting point and cast into a bar or block using a mold chill method. A special case are polycrystalline or single crystal ingots made by pulling from a molten melt. Single crystal Single crystal ingots (called boules) of materials are grown (crystal growth) using methods such as the Czoch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Han Chinese
The Han Chinese, alternatively the Han people, are an East Asian people, East Asian ethnic group native to Greater China. With a global population of over 1.4 billion, the Han Chinese are the list of contemporary ethnic groups, world's largest ethnic group, making up about 17.5% of the world population. The Han Chinese represent 91.11% of the population in China and 97% of the population in Taiwan. Han Chinese are also a significant Overseas Chinese, diasporic group in Southeast Asian countries such as Thailand, Malaysia, and Indonesia. In Singapore, people of Han Chinese or Chinese descent make up around 75% of the country's population. The Han Chinese have exerted a primary formative influence in the development and growth of Chinese civilization. Originating from Zhongyuan, the Han Chinese trace their ancestry to the Huaxia people, a confederation of agricultural tribes that lived along the middle and lower reaches of the Yellow River in the north central plains of Chin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vietnam
Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at the eastern edge of mainland Southeast Asia, with an area of about and a population of over 100 million, making it the world's List of countries and dependencies by population, fifteenth-most populous country. One of two communist states in Southeast Asia, Vietnam shares land borders with China to the north, and Laos and Cambodia to the west. It shares Maritime boundary, maritime borders with Thailand through the Gulf of Thailand, and the Philippines, Indonesia, and Malaysia through the South China Sea. Its capital is Hanoi and its largest city is Ho Chi Minh City. Vietnam was inhabited by the Paleolithic age, with states established in the first millennium BC on the Red River Delta in modern-day northern Vietnam. Before the Han dynasty's invasion, Vietnam was marked by a vibrant mix of religion, culture, and social norms. The Han dynasty annexed Northern and Central Vietnam, which were subs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
