LCT 7074
LCT 7074 is the sole surviving British Landing Craft, Tank (LCT), an amphibious assault ship for landing tanks on beachheads. Built in 1944 by Hawthorn Leslie and Company, Hebburn, the Mark 3 LCT 7074 was part of the 17th LCT Flotilla during Operation Neptune, the naval dimension of the D-Day landings in June 1944. The vessel was decommissioned in 1948, and presented to the Master Mariners' Club of Liverpool to be used as their club ship and renamed Landfall. Later converted into a floating nightclub, the vessel was acquired by the Warship Preservation Trust in the late 1990s and was moored at Birkenhead. The vessel was raised in October 2014 and transported by sea to Portsmouth for restoration.
Design
Initially developed by the British Royal Navy and later by the United States Navy during World War II into a number of different versions. Initially known as the "Tank Landing Craft" (TLC) by the British, they later adopted the American nomenclature "Landing Craft, Tank" (LCT). LCT 7074 was one of 235 LCT Mark 3’s. The vessel was built by Hawthorn, Leslie and powered by American Sterling Admiral petrol engines. Launched on 30 March, 1944, the vessel was commissioned into the Royal Navy shortly afterwards.
LCT
LCT may refer to:
Mathematics
LCT resort
LCT is a major urban development project under construction in Busan, South Korea. Located in Haeundae's popular beach, it consists of a 411.6 m, 101-floor supertall landmark tower and two 85-floor tall residential skyscrapers. It has an urban entertainment complex at the base housing a shopping mall, a hot spring spa and a water park. The landmark tower will house luxury and residential hotels with a convention center and an observatory.
Groundbreaking was held in October 2013 and completion is scheduled for 2018.
References
Median lethal dose
In toxicology, the median lethal dose, LD50 (abbreviation for "lethal dose, 50%"), LC50 (lethal concentration, 50%) or LCt50 is a measure of the lethal dose of a toxin, radiation, or pathogen. 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.
The test was created by J.W. Trevan in 1927. The term semilethal dose is occasionally used with the same meaning, in particular in translations from non-English-language texts, but can also refer to a sublethal dose; because of this ambiguity, it is usually avoided. LD50 is usually determined by tests on animals such as laboratory mice. In 2011 the US Food and Drug Administration approved alternative methods to LD50 for testing the cosmetic drug BOTOX without animal tests.
Conventions
The LD50 is usually expressed as the mass of substance administered per unit mass of test subject, typically as milligrams of substance per kilogram of body mass, sometimes also stated as nanograms (suitable for botulinum), micrograms, or grams (suitable for paracetamol) per kilogram. Stating it this way allows the relative toxicity of different substances to be compared, and normalizes for the variation in the size of the animals exposed (although toxicity does not always scale simply with body mass).
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