In toxicology, the median lethal dose, LD50 (abbreviation for "lethal dose, 50%"), LC50 (lethal concentration, 50%) or LCt50 is a toxic unit that measures the lethal dose of a given substance. The value of LD50 for a substance is the dose required to kill half the members of a tested population after a specified test duration. LD50 figures are frequently used as a general indicator of a substance's acute toxicity. A lower LD50 is indicative of increased toxicity.
Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other scholarly literature, including court opinions and patents.
PrimeGrid is a volunteer computing project that searches for very large prime numbers whilst also aiming to solve long-standing mathematical conjectures. It uses the Berkeley Open Infrastructure for Network Computing (BOINC) platform. PrimeGrid offers a number of subprojects for prime-number sieving and discovery. Some of these are available through the BOINC client, others through the PRPNet client. Some of the work is manual, i.e. it requires manually starting work units and uploading results. Different subprojects may run on different operating systems, and may have executables for CPUs, GPUs, or both; while running the Lucas–Lehmer–Riesel test, CPUs with Advanced Vector Extensions and Fused Multiply-Add instruction sets will yield the fastest results for non-GPU accelerated workloads.
As of the year 2023, Christianity had approximately 2.38 billion adherents and is the largest religion by population respectively. According to a PEW estimation in 2020, Christians made up to 2.38 billion of the worldwide population of about 8 billion people. It represents nearly one-third of the world's population and is the largest religion in the world, with the three largest groups of Christians being the Catholic Church, Protestantism, and the Eastern Orthodox Church. The largest Christian denomination is the Catholic Church, with 1.3 billion baptized members. The second largest Christian branch is either Protestantism, or the Eastern Orthodox Church.
From January 3 to June 5, 2012, voters of the Democratic Party chose its nominee for president in the 2012 United States presidential election. President Barack Obama won the Democratic Party nomination by securing more than the required 2,383 delegates on April 3, 2012, after a series of primary elections and caucuses. He was formally nominated by the 2012 Democratic National Convention on September 5, 2012, in Charlotte, North Carolina.
The first tier of intercollegiate sports in the United States includes sports that are sanctioned by one of the collegiate sport governing bodies. The major sanctioning organization is the National Collegiate Athletic Association (NCAA). Before mid-1981, women's top-tier intercollegiate sports were solely governed by the Association for Intercollegiate Athletics for Women (AIAW). Smaller colleges are governed by the National Association of Intercollegiate Athletics (NAIA). Two-year colleges are governed by the National Junior College Athletic Association (NJCAA) in most of the country, except for the unaffiliated California Community College Athletic Association (CCCAA) and Northwest Athletic Conference (NWAC).
Overseas Indians, officially Non-Resident Indians (NRIs) and People of Indian Origin (PIOs) are Indians who reside or originate outside of India. According to the Government of India, Non-Resident Indians are citizens of India who currently are not living in India, while the term People of Indian Origin refers to people of Indian birth or ancestry who are citizens of countries other than India. Overseas Citizenship of India (OCI) is given to People of Indian Origin and to persons who are not People of Indian Origin but married to People of Indian Origin. Persons with OCI status are known as Overseas Citizens of India (OCIs). The OCI status is a permanent visa for visiting India with a foreign passport.
Alexander Volkov is a Russian professional mixed martial artist. He currently competes in the Heavyweight division for the Ultimate Fighting Championship (UFC). A professional MMA competitor since 2009, Volkov previously competed for the M-1 Global promotion, as well as Bellator MMA. He is a former heavyweight champion in both promotions. As of September 12, 2023, he is #6 in the UFC heavyweight rankings.
C++20 is a version of the ISO/IEC 14882 standard for the C++ programming language. C++20 replaced the prior version of the C++ standard, called C++17. The standard was technically finalized by WG21 at the meeting in Prague in February 2020, approved on 4 September 2020, and published in December 2020.
The men's high jump event at the 2017 Summer Universiade was held on 23 and 25 August in Taipei City.
