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Humberto Fernández-Morán
Humberto Fernández-Morán Villalobos (18 February 192417 March 1999) was a Venezuelan research scientist born in Maracaibo, Venezuela, known for inventing the diamond knife or scalpel, significantly advancing the development of electromagnetic lenses for electron microscopy based on superconducting technology, and many other scientific contributions. Career Fernández-Morán founded the Venezuelan Institute for Neurological and Brain Studies, the predecessor of the current Venezuelan Institute for Scientific Research (IVIC). He studied medicine at the University of Munich, where he graduated summa cum laude in 1944. He contributed to the development of the electron microscope and was the first person to use the concept of cryo-ultramicrotomy. After flying over Angel Falls in his home country of Venezuela he was inspired by the concept of the smoothly reoccurring flow system inherent in a waterfall to take his diamond knife invention and combine it with an ultramicrotome to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electron Microscope
An electron microscope is a microscope that uses a beam of electrons as a source of illumination. It uses electron optics that are analogous to the glass lenses of an optical light microscope to control the electron beam, for instance focusing it to produce magnified images or electron diffraction patterns. As the wavelength of an electron can be up to 100,000 times smaller than that of visible light, electron microscopes have a much higher Angular resolution, resolution of about 0.1 nm, which compares to about 200 nm for optical microscope, light microscopes. ''Electron microscope'' may refer to: * Transmission electron microscopy, Transmission electron microscope (TEM) where swift electrons go through a thin sample * Scanning transmission electron microscopy, Scanning transmission electron microscope (STEM) which is similar to TEM with a scanned electron probe * Scanning electron microscope (SEM) which is similar to STEM, but with thick samples * Electron microprobe sim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venezuelan Institute For Scientific Research
The Venezuelan Institute for Scientific Research (IVIC; ) is a scientific research institute and graduate training center in Venezuela founded by government decree on February 9, 1959. It has its origins in the Venezuelan Institute of Neurology and Brain Research (IVNIC; ), which Humberto Fernandez-Moran founded in 1955. The center has the Marcel Roche Library, recognized in 1996 by UNESCO as being "the best Regional Library for Science and Technology". The headquarters of the IVIC is located near San Antonio de los Altos, in Altos de Pipe, Miranda State. The grounds cover 832-acre headquarters, where are the scientific and academic facilities, residences for researchers, students and staff, storeroom, dining, administration and service area, library, etc. Within this area there are some pockets of tropical cloud forest and a couple of streams. IVIC is currently in the process of regionalization, of which there have been two sub-regional headquarters in Mérida and Zulia state ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1999 Deaths
This is a list of lists of deaths of notable people, organized by year. New deaths articles are added to their respective month (e.g., Deaths in ) and then linked below. 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 Earlier years ''Deaths in years earlier than this can usually be found in the main articles of the years.'' See also * Lists of deaths by day * Deaths by year (category) {{DEFAULTSORT:deaths by year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1924 Births
Events January * January 12 – Gopinath Saha shoots Ernest Day, whom he has mistaken for Sir Charles Tegart, the police commissioner of Calcutta, and is arrested soon after. * January 20–January 30, 30 – Kuomintang in China holds its 1st National Congress of the Kuomintang, first National Congress, initiating a policy of alliance with the Soviet Union and the Chinese Communist Party. * January 21 – Alexander Cambridge, 1st Earl of Athlone, The Earl of Athlone is appointed Governor-General of the Union of South Africa, and High Commissioner for Southern Africa.Archontology.org: A Guide for Study of Historical Offices: South Africa: Governors-General: 1910-1961 (Accessed on 14 April 2017) * January 22 – R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Venezuelans
Famous or notable Venezuelans include: Architecture * Jimmy Alcock * Francisco Andrade Troconis * Esther Ayuso * Anita Berrizbeitia * Guido Bermudez * Bernardo Borges * Dirk Bornhost *Carlos Brillembourg * Daniel Camejo Octavio * Yoe CarreroCipriano Dominguez* Daniel Fernández-Shaw * * Graziano Gasparini * * Alejandro Chataing, known as "''Cipriano Castro's architect''" * * Gustavo Guinand van der Walle * Tomas Lugo Marcano * Paul Lustgarten * Pedro Neuberger *Mónica Ponce de León * Jorge Rigamonti (1948–2008) * Luis Roche * José Tomás Sanabria * Henrique Siso Maury * * * Carlos Raúl Villanueva (1900–1975), builder of the Ciudad Universitaria de Caracas * * Martin Vega * José Vivas * * Carlos Zapata Artists * Harry Abend (1937–2021) * Antonio Ladislao Alcantara (1898–1991) * Gabriel Bracho (1915–1995) * Manuel Cabré (1890–1984) * Gregorio Camacho (1933–2002) * Pedro Castillo (1790–1858) * Asdrubal Colmenarez (born 1945) * Carlos C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Montreal
A university () is an institution of tertiary education and research which awards academic degrees in several academic disciplines. ''University'' is derived from the Latin phrase , which roughly means "community of teachers and scholars". Universities typically offer both undergraduate and postgraduate programs. The first universities in Europe were established by Catholic monks. The University of Bologna (), Italy, which was founded in 1088, is the first university in the sense of: *being a high degree-awarding institute. *using the word (which was coined at its foundation). *having independence from the ecclesiastic schools and issuing secular as well as non-secular degrees (with teaching conducted by both clergy and non-clergy): grammar, rhetoric, logic, theology, canon law and notarial law.Hunt Janin: "The university in medieval life, 1179–1499", McFarland, 2008, , p. 55f.de Ridder-Symoens, Hilde''A History of the University in Europe: Volume 1, Universities in the Midd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microtome
A microtome (from the Greek ''mikros'', meaning "small", and ''temnein'', meaning "to cut") is a cutting tool used to produce extremely thin slices of material known as ''sections'', with the process being termed microsectioning. Important in science, microtomes are used in microscopy for the microscope slide, preparation of samples for observation under transmitted visible light, light or electron radiation. Microtomes use steel, glass or diamond blades depending upon the specimen being sliced and the desired thickness of the sections being cut. Steel blades are used to prepare histological sections of animal or plant tissues for light microscopy. Glass knives are used to slice sections for light microscopy and to slice very thin sections for electron microscopy. Industrial grade diamond knives are used to slice hard materials such as bone, teeth and tough plant matter for both light microscopy and for electron microscopy. Gem-quality diamond knife, diamond knives are also used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cemetery The Square Luxburg-Carolath
The Luxburg-Carolath Cemetery (), commonly known as El Cuadrado ("The Square") is a privately owned cemetery located in Maracaibo, Zulia, Venezuela. It is one of the oldest operating cemeteries in the country, and has over 10,000 interments. History The Cuadrado cemetery was the first designated burial site of the city of Maracaibo in modern times; it was officially opened on 12 November 1879 as church grounds, where bodies were traditionally buried, were becoming overcrowded. The cemetery was given landmark status in Maracaibo in 2003. Since then, some graves have become derelict or otherwise defaced, but there have been efforts made to preserve the site. Notable to the cemetery is its architecture, which spans various styles including Baroque, Neoclassical, and Eclectic, and the various notable people and families interred. In 2018, it was estimated that 10,630 bodies rest in the cemetery; the state of Zulia began building a museum on the site this year, about the cemetery and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apollo Project
The Apollo program, also known as Project Apollo, was the United States human spaceflight program led by NASA, which Moon landing, landed the first humans on the Moon in 1969. Apollo followed Project Mercury that put the first Americans in space. It was conceived in 1960 as a three-person spacecraft during President Presidency of Dwight D. Eisenhower, Dwight D. Eisenhower's administration. Apollo was later dedicated to President John F. Kennedy's national goal for the 1960s of "landing a man on the Moon and returning him safely to the Earth" in an address to United States Congress, Congress on May 25, 1961. It was the third American human spaceflight program to fly, preceded by Project Gemini conceived in 1961 to extend spaceflight capability in support of Apollo. Kennedy's goal was accomplished on the Apollo 11 mission when astronauts Neil Armstrong and Buzz Aldrin landed their Apollo Lunar Module (LM) on July 20, 1969, and walked on the lunar surface, while Michael Collins ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marcos Pérez Jiménez
Marcos Evangelista Pérez Jiménez (25 April 1914 – 20 September 2001) was a Venezuelan military officer and the dictator of Venezuela from 1950 to 1958, ruling as member of the military junta from 1950 to 1952 and as president from 1952 to 1958. He took part in the 1948 Venezuelan coup d'état, becoming part of the ruling junta. He ran in the 1952 election. However, the junta cancelled the election when early results indicated that the opposition was ahead and declared Jiménez provisional president. He became president in 1953 and instituted a constitution that granted him dictatorial powers. Under Pérez's rule, the rise of oil prices facilitated many public works projects, including roads, bridges, government buildings and public housing, as well as the rapid development of industries such as hydroelectricity, mining and steel. He also enriched himself considerably, as well as many of his political allies. The economy of Venezuela developed rapidly while Pérez was in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RV-1 Nuclear Reactor
The RV-1 nuclear reactor, now repurposed and known as Gamma rays sterilization plant ('Pegamma'; ''Spanish'': Planta de Esterilización por Rayos Gamma), is a facility located in Altos Mirandinos, Miranda, Venezuela. It was the only nuclear reactor in Venezuela and one of the first reactors in Latin America. Currently, it is used as a gamma ray facility for microbiological sterilization of surgical supplies, packaging, medicine and dry food. Characteristics The RV-1 was a pool-type material testing reactor (MTR) with a capacity of 3 megawatts of thermal power. It contained 20% enriched uranium as core fuel and used light water as both coolant and neutron moderator. History During the regime of president Marcos Pérez Jiménez, Venezuela became member of the International Atomic Energy Agency after purchasing the RV-1 reactor from General Electric in 1956. The project was supported by the administration of United States President Dwight D. Eisenhower, to help promote the At ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superconductive
Superconductivity is a set of physical properties observed in superconductors: materials where electrical resistance vanishes and magnetic fields are expelled from the material. Unlike an ordinary metallic conductor, whose resistance decreases gradually as its temperature is lowered, even down to near absolute zero, a superconductor has a characteristic critical temperature below which the resistance drops abruptly to zero. An electric current through a loop of superconducting wire can persist indefinitely with no power source. The superconductivity phenomenon was discovered in 1911 by Dutch physicist Heike Kamerlingh Onnes. Like ferromagnetism and atomic spectral lines, superconductivity is a phenomenon which can only be explained by quantum mechanics. It is characterized by the Meissner effect, the complete cancellation of the magnetic field in the interior of the superconductor during its transitions into the superconducting state. The occurrence of the Meissner effect indicat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
