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LAS

Harry Reid International Airport (IATA: LAS, ICAO: KLAS, FAA LID: LAS) is the principal international airport serving the Las Vegas Valley in , , situated approximately five miles south of in the unincorporated community of Paradise. Opened to commercial service in 1948 after initial military use during , it functions primarily as a gateway for leisure and business travelers drawn to Las Vegas's gaming, entertainment, and convention industries, accommodating major domestic and international carriers with four runways and three terminals connected by an automated system. Originally named McCarran International Airport in honor of Senator Patrick McCarran, who advocated for its expansion and federal funding, the facility was rebranded in December 2021 following legislation signed by Governor , recognizing former Senate Majority Leader Harry Reid's contributions to 's aviation infrastructure and economic growth. The renaming, driven by revelations of McCarran's historical associations with discriminatory policies, nonetheless drew criticism for overlooking Reid's own contentious record, including his opposition to the nuclear repository—which some economists argue cost the state billions in potential revenue—and partisan rhetoric that alienated business interests. As one of the world's busiest s, LAS recorded over 57 million enplanements in 2023, surpassing pre-pandemic levels and underscoring its pivotal role in sustaining Las Vegas's tourism-dependent economy amid ongoing expansions like Terminal 3 and enhanced security protocols. Despite operational challenges such as capacity constraints prompting discussions of a supplemental at Ivanpah Valley, the facility continues to prioritize efficiency through investments in firefighting equipment and runway alignments, handling peak loads from low-cost carriers and seasonal surges.

Places

Poland

In Poland, "Las" (pronounced [las]) denotes multiple small villages, with the name derived from the Polish word for "forest," reflecting the country's forested landscapes. Geographical records identify two such localities. One Las is situated in Gmina Ślemień, Żywiec County, Silesian Voivodeship, in southern Poland, at coordinates approximately 49.74°N, 19.43°E. This village has around 795 residents and lies within a region characterized by rural terrain and proximity to the Beskid Mountains, contributing to its appeal for natural and cultural exploration. The second Las is located in Gmina Toszek, Gliwice County, also in the Silesian Voivodeship, further emphasizing the recurrence of the name in this voivodeship's administrative divisions. These settlements typically feature modest populations and integrate into Poland's broader network of rural communities amid wooded areas.

Elsewhere

Las was an ancient town in Laconia, on the southeastern Peloponnese peninsula of Greece, situated on the east coast of the Mani Peninsula near the modern area of Gythio. It appears in Homer's Iliad (Catalogue of Ships, Book 2) as one of the Laconian cities contributing ships under Agamemnon's command, indicating its significance in Mycenaean-era geography around the 13th century BCE. Archaeological associations place its site at Mount Asia, identified with the hill of Passava, which later hosted a Frankish castle constructed in the medieval period. The name derives from Ancient Greek "Λᾶς" (Lās), potentially linked to local mythological figures or topographic features, though etymological details remain speculative without direct epigraphic evidence.

Transportation

Airports and aviation

Harry Reid International Airport (IATA: LAS, ICAO: KLAS) is the principal commercial airport serving the Las Vegas Valley, a major and hub in , . Located in the unincorporated community of Paradise, it lies approximately 5 miles (8 km) south of and functions as a focus city for several low-cost carriers, facilitating high-volume leisure and . The airport features four runways and two terminals (A and C, with D under development), supporting both domestic and limited international flights primarily to destinations in , , , and . The airport originated as Alamo Airport, opening on December 12, 1942, during to support military training; civilian operations began postwar. It was renamed McCarran Field in 1948 after Nevada Senator Patrick McCarran, who advocated for its federal funding. On December 14, 2021, it was redesignated to honor former U.S. , a Nevada Democrat who represented the state from 1987 to 2017 and secured significant infrastructure investments, including airport expansions; the change followed unanimous approval in 2020, funded partly by private donations to avoid taxpayer costs. In 2024, the airport set a record with 58.4 million passengers, up 1.39% from , driven by recovery and events like concerts and conventions; through the first half of the year, it processed 28.9 million travelers, a 2.6% increase year-over-year. Air carrier operations constitute about 78% of total activity, with overall movements reaching 107% of pre-2019 pandemic levels by mid-2025. dominates as the largest operator, followed by , , and , reflecting Las Vegas's reliance on affordable, short-haul flights from U.S. cities. Cargo operations are handled at the Marnell Air Cargo Center, a 200,928-square-foot facility integrated into the airport's master plan expansions, supporting freight distribution for the region's logistics needs. Ground handling includes services from providers like Worldwide Flight Services and , encompassing ramp handling, cargo towing, and passenger services. The airport also accommodates general aviation and charter flights, including scenic tours over the nearby , though commercial sightseeing operators maintain separate facilities.

Education

Institutions and programs

The LAS commonly denotes colleges or degree programs in Liberal Arts and Sciences at various universities, which integrate studies in , social sciences, natural sciences, and related disciplines to provide foundational education. These institutions typically house multiple departments and offer interdisciplinary curricula aimed at developing and broad knowledge bases. For example, the University of at Urbana-Champaign's College of Liberal Arts & Sciences enrolls thousands of students and provides 70 undergraduate majors, over 110 graduate majors and minors, and various certificate programs across these fields. Similarly, the University of Illinois at Chicago's College of Liberal Arts and Sciences (LAS) delivers undergraduate and graduate programs in humanities, social sciences, and natural sciences, emphasizing research and teaching in areas such as , , and . Iowa State University's College of Liberal Arts and Sciences supports over 50 majors, spanning from and to history and , serving as the institution's largest academic unit with a focus on diverse scholarly pursuits. At the level, LAS programs prepare students for transfer to four-year institutions, often requiring a minimum of 45 credits in liberal subjects for an Associate in degree, as outlined in standards for community colleges. The operates a of Letters, & Sciences (LAS) with 20 departments offering bachelor's, master's, and doctoral degrees in disciplines like English, , and physics, prioritizing faculty-student collaboration and . In addition to institutional structures, LAS also refers to specific degree pathways, such as the Liberal Arts and Sciences program at , which aligns with transfer requirements and includes outcomes in communication, quantitative reasoning, and cultural awareness. Less commonly in educational contexts, LAS designates programs like Latin American and Latinx Studies at institutions such as the University of Wisconsin-Eau Claire, focusing on interdisciplinary cultural and historical analysis through courses like LAS 150.

Organizations

Governmental and service organizations

The League of Arab States (LAS), also known as the Arab League, is an intergovernmental organization founded on March 22, 1945, through the Alexandria Protocol and subsequent Charter, comprising 22 member states primarily from the . Its primary objectives include coordinating political, economic, cultural, and social policies among members to safeguard and sovereignty, with headquarters in , . The LAS operates through bodies such as the Council of the League, comprising foreign ministers, and has addressed regional issues like the Israeli-Palestinian conflict and via initiatives such as the Arab Common Market established in 1964. The denotes multiple non-governmental service organizations dedicated to delivering or low-cost legal assistance to indigent clients in civil, criminal, and matters. In the United States, The Legal Aid Society of , established in 1876, represents over 300,000 low-income individuals annually across criminal defense, juvenile rights, and housing disputes, operating as an independent nonprofit funded partly by city contracts and private donations. Similarly, the Legal Aid Society of Middle Tennessee, founded in 1944, provides civil legal services to vulnerable populations in areas like and , handling thousands of cases yearly through salaried attorneys and volunteers. These entities prioritize access to justice for those unable to afford representation, often partnering with bar associations and government grants without direct governmental control. In governmental contexts, the Legal Advocacy Service (LAS) under the Illinois Guardianship and Advocacy Commission offers representation to individuals with disabilities facing or rights violations, established to ensure in and proceedings since the 1970s. Additionally, the U.S. Department of Agriculture's Laboratory Approval Service (LAS) accredits private laboratories for testing agricultural products to meet federal standards for trade and safety, processing applications and conducting audits to enforce compliance with programs like the National Bioengineered Food Disclosure Standard.

Science and technology

Chemistry and materials science

Linear alkylbenzene sulfonates (LAS) constitute a major class of anionic in , characterized by a hydrophobic linear alkyl chain (typically C10-C13) attached to a ring bearing a group, most commonly at the position. The moiety (-SO3- Na+) imparts water solubility and detergency, enabling LAS to reduce and facilitate emulsification in aqueous solutions. Global production exceeds 4 million metric tons annually, making LAS the most abundantly manufactured synthetic due to its cost-effectiveness and performance in removing oils and soils. Synthesis involves sulfonation of () with (SO3), followed by neutralization with to yield the sodium salt. This process yields a commercial mixture of homologues and isomers, with the linear alkyl structure ensuring better biodegradability compared to earlier branched (), which were phased out in the after causing persistent foam in waterways and poor microbial degradation. LAS degrades primarily via omega- and beta-oxidation pathways in aerobic environments, achieving over 90% mineralization within 28 days under standard tests, though anaerobic degradation is slower and less complete. In applications, LAS serves as a templating or dispersing agent in nanomaterial synthesis, such as stabilizing carbon nanotubes or silica particles during sol-gel processes, leveraging its amphiphilic properties to control and . of LAS acid intermediates releases (SO2), a reaction studied for in high-temperature processing, with activation energies around 150-200 /mol depending on chain length. data indicate LAS persistence in sediments at parts-per-billion levels, prompting ongoing research into advanced oxidation treatments like TiO2- for wastewater remediation.

Computing and data processing

The Log ASCII Standard (LAS) is a text-based file format developed for storing and exchanging well log in the and geophysical industries. Introduced in 1987 by the Canadian Well Logging Society, it structures into sections including headers for (such as well location, logging tool details, and version information) and an ASCII section containing curve measurements like depth, resistivity, and values. LAS version 2.0, released in 1992, added support for extended mnemonics and improved organization, while version 3.0, introduced in 2000, incorporated and logs. This format facilitates in software for petrophysical analysis, reservoir modeling, and quality control, with libraries like lasio in enabling programmatic reading, writing, and manipulation of files for tasks such as curve splicing and depth shifting. In geospatial , LAS also denotes the ASPRS LiDAR (Light Detection and Ranging) file format, a standard for encoding data captured by systems. Maintained by the American Society for and (ASPRAS) since version 1.0 in 2003, it supports attributes like , return number, (e.g., , ), and GPS time, enabling efficient storage of billions of points from aerial or terrestrial surveys. Version 1.4, finalized in 2013, added waveform packet descriptors for full-waveform LiDAR, while the compressed LAZ variant (introduced in 2012) reduces file sizes by up to 90% via lossless algorithms without altering data fidelity. Tools such as PDAL and LAStools process LAS files for filtering, , and to raster surfaces, to applications in topographic , inventory, and . Both formats underscore LAS's role in domain-specific data interchange, prioritizing over proprietary systems; however, the well log LAS remains ASCII for human readability in logging operations, whereas LiDAR LAS employs binary efficiency for large-scale computational workflows. Adoption has been driven by industry standards bodies, with USGS endorsing LAS for public geophysical archives since the early 2000s.

Aerospace and engineering

The Launch Abort System (LAS) is an escape system integrated into NASA's Orion spacecraft, engineered to rapidly separate the crew module from a failing launch vehicle during liftoff or ascent, thereby safeguarding astronauts from potential catastrophic failures. Positioned atop the crew module as a detachable tower approximately 4.5 meters (15 feet) tall and weighing about 20,000 pounds when fully fueled, the LAS employs solid-propellant rocket motors to generate thrust exceeding 400,000 pounds, enabling acceleration up to 3-4 times the force of gravity to achieve safe separation distances within seconds. This design draws from historical launch escape systems but incorporates modern advancements in materials and control algorithms for compatibility with the Space Launch System (SLS) rocket, prioritizing reliability through redundant ignition systems and fault-tolerant avionics. The LAS comprises three primary solid-propellant motors: the main abort motor, which provides the primary thrust vector for separation; the attitude control motor (ACM), a ring of smaller nozzles that enables precise three-axis steering and stability during high-dynamic-pressure abort scenarios; and the jettison motor, which facilitates detachment of the LAS post-escape to reduce mass for reentry. Engineering specifications emphasize high-thrust-to-weight ratios, with the abort motor achieving ignition in under 100 milliseconds via pyrotechnic sequencing, and the ACM delivering vectorable thrust for trajectory correction under aerodynamic loads up to Mach 1.5. Materials include composites for the fairing and interstage, resistant to temperatures exceeding 1,000°C from motor plumes, while the uses frangible joints and pneumatic pistons to ensure clean crew module detachment without structural interference. These components underwent rigorous finite element analysis and subscale testing to validate structural integrity against launch vibrations and abort-induced stresses. Development of the LAS began in the mid-2000s under NASA's , evolving into the Multi-Purpose Crew Vehicle framework, with as prime contractor and (now ) responsible for motor propulsion. Key engineering challenges included optimizing abort profiles for pad, low-altitude, and high-altitude scenarios, where the system must counteract booster failures or core stage anomalies, achieving separation at altitudes from ground level to 1,000 feet per second ascent velocity. Flight testing commenced with the Pad Abort-1 test on May 6, 2010, at , demonstrating vertical liftoff, crew module separation, and parachute deployment in 126 seconds. Subsequent trials included the Attitude Control Motor-2 hot-fire on July 31, 2013, validating steering under simulated abort conditions, and the climactic on July 2, 2019, atop a modified booster, which stressed the LAS at maximum (approximately 1,000 pounds per square foot) and confirmed safe crew module recovery. As of September 2025, LAS hardware integration for II was completed, incorporating post-test refinements to algorithms for enhanced abort decision-making. The LAS's engineering underscores causal priorities in safety, where empirical data from simulations and informed to minimize g-forces on occupants (limited to 12-15g peaks) and ensure stable water s via and main parachutes post-jettison. Unlike passive towers of prior eras, the active ACM integration allows for reshaping, reducing dispersions to under 5 nautical miles, as verified in integrated simulations. Ongoing analyses post-2019 tests have focused on hypervelocity debris risks and , with no major redesigns required for missions, affirming the system's robustness derived from iterative prototyping over ballistic modeling alone.

Business and brands

Enterprises

LAS Enterprises, founded in 1957 as a family-owned business in , specializes in and installing hurricane shutters, impact-resistant windows, siding, and related building products for the Gulf South region. The company initially focused on aluminum storm panels and awnings before expanding into replacement windows and custom shutters, establishing itself as a leader in weather-resistant home improvements. By 1995, under the ownership of Richard Maia, it consolidated operations and emphasized energy-efficient and storm-rated products tailored to coastal vulnerabilities. Headquartered in , LAS Enterprises employs approximately 101 people and operates showrooms for product demonstrations, with a reputation for in-house and installation services. It has been awarded titles such as Best Window Company and Best Hurricane Preparation Company by New Orleans Homes & Lifestyles in 2023, reflecting its focus on durability in hurricane-prone areas. The firm accepts major credit cards and provides financing options, serving residential and commercial clients across and surrounding states. Other business entities using the LAS designation include Local Authority Services (LAS), a Canadian co-operative established to deliver procurement, energy management, and shared services to Ontario municipalities and public sector organizations at competitive rates. Operating since the early 2000s, it emphasizes sustainability and cost efficiencies through bulk purchasing and vendor partnerships, without direct ties to private manufacturing.

Commercial products

Linear alkylbenzene sulfonate (LAS), an anionic surfactant, constitutes a primary active ingredient in numerous commercial laundry detergents and household cleaning products, enabling effective dirt and grease removal through surface tension reduction and emulsification. Global production exceeds 2.5 million metric tons annually, with LAS comprising the largest share among synthetic surfactants due to its cost-effectiveness and performance in hard water conditions. Typical formulations include up to 25% LAS in consumer-grade powders and liquids, such as those from major brands like Procter & Gamble and Unilever, where it disperses soils and prevents redeposition on fabrics. In addition to detergents, LAS appears in dishwashing liquids and personal care items like shampoos at lower concentrations (5-15%), valued for its foaming properties and mildness compared to earlier branched alkylbenzene sulfonates, which were phased out in the 1960s for poor biodegradability. Linear variants, introduced post-1965, exhibit over 90% primary biodegradation within 28 days under aerobic conditions, supporting regulatory approvals in regions like the European Union and United States. Industry data from the Council for LAB/LAS Environmental Research affirm its role in reducing river foaming issues that plagued earlier detergents. Specialized commercial applications include LAS-320, a non-toxic asphalt sealer and developed for and maintenance, utilizing LAS for enhanced penetration and durability without volatile organic compounds. Other niche products feature LAS variants in cleaners and emulsifiers, though consumer detergents dominate usage volumes.

Other uses

Culture and media

Land Air Sea is the third studio album by American rock band , originally released on February 25, 2003, by N.O.S. Recordings and later remastered and reissued by in 2004. The album, recorded on two-inch analog tape, features 12 tracks emphasizing melodic rock with influences from , as the band's drummer Pat Wilson contributed to its production. It includes songs like "The Original Angry Mob" and "," reflecting themes of personal struggle and energy. The Livermore-Amador Symphony (LAS) is a volunteer-based community founded in 1963 in , serving the Tri-Valley region of the . It performs classical repertoire, pops concerts, and youth orchestra programs annually at venues like the Bankhead Theater, featuring works by composers such as Tchaikovsky and Holst. As the only full-sized symphony in its local area, LAS emphasizes accessible live and community engagement through competitions for young musicians. In video game design, LAS denotes "limited action set," a mechanic restricting players to a fixed number of equippable abilities or hotbar slots to foster strategic decision-making over rapid button-mashing. This approach, implemented in titles like WildStar (2014), where players earn action set points to unlock slots up to eight, and Pantheon: Rise of the Fallen (in development), aims to balance combat depth with accessibility in MMORPGs. The system encourages pre-encounter planning, differentiating it from action games with unlimited skill access.

Miscellaneous

In negotiation and dispute resolution, LAS refers to the Least Acceptable Settlement, defined as the minimum outcome a party is willing to accept to resolve a conflict. In video gaming, LAS commonly abbreviates Left Analog Stick, the directional input on the left side of dual-analog controllers, primarily used for character movement and camera control in first- and third-person perspectives. This term appears in controller documentation and gaming hardware specifications from manufacturers like Sony and Microsoft. LAS also designates Limited Action Set in game design and programming contexts, referring to a constrained of actions to simplify or , as seen in certain titles and . In informal , LAS can mean Lost At , evoking a sense of being metaphorically directionless or overwhelmed, though this usage is less standardized and appears sporadically in online forums and .

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