DORIS (Doppler Orbitography and Radiopositioning Integrated by Satellite) is a satellite-based positioning system used primarily for precise orbit determination. It was developed by the French National Centre for Space Studies (CNES) in collaboration with various international partners. DORIS is particularly notable for its ability to provide accurate measurements of the satellites' orbits by using a network of ground beacons that transmit radio signals.

Apiol, also known as parsley seed oil or 4-allyl-1,2-dimethoxybenzene, is a chemical compound primarily derived from the seeds of plants in the Apiaceae family, particularly from parsley (Petroselinum crispum). It is known for its strong aroma and is often used in traditional herbal medicine, aromatherapy, and as a flavoring agent in food products.

Austrian resin extraction typically refers to the method of collecting resin from pine trees, particularly from the species that thrive in Austria and surrounding regions. This practice has historical significance, especially in the context of producing turpentine and rosin, which have various industrial and medicinal applications. The extraction process generally involves: 1. **Tapping**: Making incisions in the bark of the pine trees to access the resin. These incisions allow the resin to flow out and collect in containers.

Balm of Gilead, often referenced in historical, medicinal, and biblical contexts, typically refers to a healing substance derived from the resin of certain plants. The term is closely associated with the biblical region of Gilead, which was known for its medicinal plants. In ancient times, Balm of Gilead was used as a remedy for various ailments, and it is mentioned in the Bible, notably in the book of Jeremiah, as a symbol of healing and comfort.

Balsam of Peru is a natural resin derived from the tree known scientifically as *Myroxylon balsamum*, which is native to Central America and parts of South America, particularly in countries like Guatemala and El Salvador. The resin is often harvested from the trunk of the tree and has a rich, warm scent that is used in various applications.

The cashew is a tropical tree species, scientifically known as *Anacardium occidentale*. It is native to South America but is now grown in various tropical regions around the world, including Africa, India, and Southeast Asia. The tree produces two principal products: the cashew nut and the cashew apple. 1. **Cashew Nut**: The cashew nut is the seed of the cashew tree and is widely consumed as a snack and ingredient in various dishes.

Coniferous resin salve is a topical ointment or balm made primarily from the resin of coniferous trees, such as pine, spruce, and fir. These resins are known for their natural antiseptic, anti-inflammatory, and analgesic properties. The salve may also contain other natural ingredients, such as oils, beeswax, and essential oils, to enhance its therapeutic effects and improve its texture for easy application.

Convolvulus scammonia, commonly known as scammony, is a perennial climbing plant belonging to the bindweed family (Convolvulaceae). It is native to regions of the eastern Mediterranean, particularly in countries such as Turkey, Greece, and parts of North Africa. The plant is notable for its thick, tuberous roots, which contain a resinous sap called scammony.

Impregnation resin refers to a type of synthetic resin used in various industrial and manufacturing processes, particularly for enhancing materials' properties. These resins are typically low-viscosity liquids that can penetrate and fill the pores or voids in substrates, such as wood, ceramics, metals, or composites. The process of impregnation involves saturating the substrate with the resin, followed by curing or hardening, which can be achieved through heat, pressure, or chemical reactions.

Mastic is a natural resin obtained from the mastic tree (Pistacia lentiscus), which is predominantly found on the Mediterranean islands, especially the island of Chios in Greece. The resin has been harvested for thousands of years and is known for its aromatic properties and various uses. ### Characteristics: - **Appearance**: Mastic resin usually appears as small, tear-shaped droplets or "tears" that are translucent and can range from yellow to brown in color.

Myrrh is a natural resin obtained from the Commiphora species of trees, which are native to regions in Africa and the Arabian Peninsula. Historically, myrrh has been valued for its aromatic properties and has been used for various purposes such as incense, perfumes, and traditional medicine. In ancient times, myrrh was one of the gifts presented to Jesus by the Magi, symbolizing its significance and value.

Oleoresin is a natural extract obtained from plants that contains both essential oil and resin components. It is created through processes such as solvent extraction or steam distillation. Oleoresins are concentrated extracts that capture the flavor, aroma, and sometimes color of the original plant material, making them popular in various applications, particularly in the food, fragrance, and pharmaceutical industries.

Resin acid refers to a group of naturally occurring organic compounds, primarily obtained from the distillation of certain plant resins, particularly those derived from coniferous trees like pine. The most common type of resin acid is abietic acid, which is a major component of the rosin obtained from pine trees. Resin acids are characterized by their chemical structure, which typically includes a bicyclic structure with carboxylic acid groups.

Sagapenum is a plant-based substance obtained from the resin of certain species of the Ferula genus, particularly Ferula gummosa. It has traditionally been used in herbal medicine and as a flavoring agent. Sagapenum is known for its strong, aromatic properties and has been utilized in various culinary dishes, as well as in traditional remedies, particularly in Middle Eastern and Indian cultures.

RDFa, which stands for Resource Description Framework in Attributes, is a suite of extensions to HTML5 or other XML-based document formats that enables embedding rich metadata within web documents. It allows authors to provide structured data within their HTML or XHTML documents in a way that can be easily processed by machines, such as search engines and other applications that utilize semantic web technologies.

Redland RDF Application Framework is a set of libraries and tools designed to work with the Resource Description Framework (RDF), which is a standard model for data interchange on the web. The framework provides a versatile and flexible environment for storing, manipulating, and querying RDF data. It supports various serialization formats for RDF, such as RDF/XML, Turtle, N-Triples, and others, allowing developers to work with RDF data in a way that suits their application's needs.

SPARQL (pronounced "sparkle") is a query language and protocol used for accessing and querying data stored in Resource Description Framework (RDF) format. RDF is a standard model for data interchange on the web, which encodes information in a graph structure using triples: subject-predicate-object expressions. SPARQL allows users to: 1. **Query RDF Data**: It can retrieve and manipulate data stored in RDF format from various sources, including databases, files, and endpoints.

TriX (Turtle RDF/XML) is a serialization format used to encode RDF (Resource Description Framework) data. It is an XML-based format that provides a way to represent RDF graphs in a way that is both human-readable and machine-readable. TriX is designed to facilitate the storage and exchange of RDF data, offering a way to serialize the triples that form RDF statements (subject, predicate, object).

Graph Style Sheets (GSS) is a language used to define styles for graph visualizations, similar to how CSS (Cascading Style Sheets) is used for styling HTML documents. GSS allows users to specify visual attributes for graph elements, such as nodes, edges, labels, and backgrounds, enabling the customization of the appearance of graphs in a structured and reusable manner.

Term-rewriting programming languages (TRPLs) are programming languages that are based on the principles of term rewriting, a formal system used primarily in the fields of computer science and logic. Term rewriting involves manipulating symbolic expressions (terms) according to a set of defined rules, allowing for computation and the transformation of these terms. ### Key Concepts 1. **Terms**: In term rewriting, a term can be a variable, a constant, or a function applied to arguments.