All articles starting with P
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Proper time
Proper time is the time interval between two events measured by a clock present at both events, written Δτ, and it is the shortest measurable interval between them.
PROPER trial
PROPER (NCT04674254) is a Cairo University randomized open-label trial comparing intravitreal bevacizumab with fluorescein-angiography-guided targeted retinal photocoagulation in proliferative diabetic retinopathy, measuring macular capillary vascular density and foveal avascular zone change by OCT angiography over 12 months.
Properdin deficiency
Properdin deficiency (X-linked, OMIM 312060) is a rare complement immunodeficiency causing fulminant meningococcal disease in males; types I–III, ~33% mortality, treated with vaccination and antibiotics.
Properties of concrete
Properties of concrete are the measurable mechanical and durability characteristics of concrete, most often compressive strength, tensile strength, elastic modulus, creep, shrinkage, and resistance to chloride penetration.
Properties of Jeffrey Epstein
Properties of Jeffrey Epstein: his Manhattan townhouse, Palm Beach mansion, Zorro Ranch, Little St. James and Great St. James islands, and Paris apartment; all sold by his estate after 2019, funding victim compensation and the $105 million USVI settlement.
Properties of metals, metalloids and nonmetals
Metals, metalloids, and nonmetals are the three broad classes of chemical elements: metals are shiny, malleable conductors, nonmetals are dull poor conductors, and metalloids are in-between semiconductors.
Properties of the Holy See
Properties of the Holy See: real estate, movable goods, and financial assets of the papal sovereign subject, based on the 1929 Lateran Treaty, 44-hectare Vatican City, extraterritorial Roman basilicas and palaces, and APSA-managed holdings of about 5,000 properties.
Properties of water
Water (H₂O), also called hydrogen oxide, is a polar molecule whose hydrogen bonding gives it unusually high melting and boiling points, heat capacity, and surface tension.
Propertius
Sextus Propertius (Sextus Propertius, ca. 50–16 BC), Augustan Latin elegiac poet of four books of Elegies centered on his mistress Cynthia; rival of Tibullus, model for Ovid, self-styled Roman Callimachus.
Property
Property, in law, is anything tangible or intangible that can be owned, used, transferred, or disposed of. Covers real versus personal property, estates in land (fee simple, life estate, leasehold), future interests, and the rule against perpetuities.
Property (philosophy)
Property in philosophy: an entity predicable of and exemplifiable by things, also called attribute or quality. Divided into universals versus tropes; motivated by the one over many argument; opposed by nominalism and conceptualism.
Property Brothers
Property Brothers is a Canadian HGTV reality series starring twins Drew Scott, a real estate agent, and Jonathan Scott, a licensed contractor, who help homebuyers buy fixer-uppers and renovate them; first aired 2011 on W Network, produced by Cineflix, spun into many franchises.
Property law
Property law governs ownership, use, and transfer of land and things, organized around title, estates, and tenure in common law systems and ownership and real rights in civil law systems, with registration and conveyancing rules.
Property Law of the People's Republic of China
Property Law of the PRC (物权法), the 2007 Property Rights Law effective October 1, 2007: China's first comprehensive real rights statute, defining ownership, usufructuary and security rights over land held by the state or collectives, later absorbed into the 2020 Civil Code.
Property list
A property list, commonly called a plist, is a hierarchical data format used across Apple's macOS and iOS for preferences, application configuration, and bundle metadata such as Info.plist.
Property management
Property management: professional operation of rental real estate for owners, from Octavia Hill's 1865 London housing work and the 1933 founding of IREM to today's income-maximizing, AI-assisted managers.
Property P (knot theory)
Property P is a property of knots in the 3-sphere, conjectured for every non-trivial knot and proved by Kronheimer and Mrowka in 2004 using gauge theory.
Property rights (economics)
Property rights, also called proprietary rights, in economics are enforceable rights to use an asset, earn income from it, exclude others, and transfer it, whether grounded in law or custom.
Property Specification Language
Property Specification Language (PSL) is a formal language for specifying temporal properties, or assertions, of digital hardware designs, standardized as IEEE Std 1850. Based on IBM's Sugar language, it works with VHDL, Verilog, SystemVerilog, and SystemC.
Property tax
A property tax, also known as a real estate tax or mill levy, is a recurrent tax on the assessed value of land and buildings, typically levied by local governments.
Property tax in the United States
Property tax in the United States is a tax on real and personal property, levied mostly by local governments, which collected $630 billion in 2021.
Property testing
Property testing is a subfield of algorithm theory in which a randomized procedure decides from a small sample whether an object has a property or is far from it.
Property-based testing
Property-based testing is a software testing approach in which developers state general properties a program should satisfy, and tools check them against large numbers of generated inputs.
Propetamphos
Propetamphos (OMS 1502, Safrotin) is an organophosphate insecticide and acaricide, CAS 31218-83-4, used indoors against ants, cockroaches, fleas, and termites; not EU-approved, with sheep-dip registrations not renewed in Australia.
ProPetro
ProPetro Holding Corp. is a Midland, Texas-based oilfield services company founded in 2005 that provides hydraulic fracturing, wireline, cementing, and power generation services to producers in the Permian Basin.
Propfan
The propfan, also called an unducted fan or open rotor, is an aircraft engine combining turboprop fuel economy with turbofan speed, developed by NASA and flying by 1986.
Prophase
Prophase is the first stage of mitosis and meiosis I, when duplicated chromosomes condense via condensin and cohesin, the nucleolus and nuclear envelope break down, and the spindle begins forming from centrosomes.
Prophecy
Prophecy is the claimed transmission of a deity's message to humans through a prophet, attested from ancient Mari in the 18th century BCE through the Bible, the Qur'an, and living movements.
Prophecy of Neferti
The Prophecy of Neferti, also known as the Admonitions of Neferti, is an ancient Egyptian text foretelling chaos and the rise of King Amenemhat I.
Prophecy of Seventy Weeks
The prophecy of seventy weeks, also called the Seventy Weeks prophecy, is the vision in Daniel 9:24-27 where Gabriel tells Daniel seventy sevens, usually read as 490 years.