Heilongjiang
Heilongjiang or Heilungkiang [Chin.,=black dragon river (the Amur)], province (1994 est. pop. 35,570,000), c.179,000 sq mi (463,730 sq km), NE China. The capital is Harbin . Heilongjiang constitutes the northern part of the region known as Manchuria (the Northeast) and is separated from Russia by the Amur River in the north and the Ussuri in the east, and is bordered on the west by the Inner Mongolian Autonomous Region. Both the Da Hinggan (Greater Khingan) and Xiao Hinggan (Lesser Khingan) mountain ranges traverse the province; their heavily forested slopes contain some of the finest timber in China. Lumbering is a major industry; timber reserves have been damaged by excessive cutting. The south, which contains the agricultural, industrial, and economic base of the province, is watered by the Songhua, the Nen, the Hulan, and the Mudan rivers, and is known as the Manchurian or Northeast plain. It is a great wheat area; millet, sorghum, soybeans, sugar beets, and flax are also grown. Farming in Heilongjiang is highly mechanized, and vast reclamation projects have been instituted under the Communist government. The Chinese Eastern RR crosses S Heilongjiang and has many branches to the north; Harbin is the junction point with the South Manchurian railway system. Heilongjiang, which produces almost half of China's oil, contains the great Daqing oil field, first worked in 1959. Major coal mines are in Jixi and Hegang. Iron and magnesite are also mined, and aluminum is produced. Gold is extracted in the Da and Xiao Hinggan. Harbin is one of the country's leading industrial centers, known especially for its heavy machinery. Qiqihar , Jiamusi , and Mudanjiang are also industrial cities, with manufactures ranging from processed foods to locomotives. The boundaries of Heilongjiang have been changed several times. The former provinces of Hinggan and Nenjiang were added to it in 1950 and Songjiang was incorporated in 1954. The northwest section, which became part of Inner Mongolian Autonomous Region in 1949, was returned to Heilongjiang in the 1969-70 redistricting but subsequently restored to Inner Mongolia in 1979.
Cite this article
Pick a style below, and copy the text for your bibliography.
|
X-Ray Imaging Physics for Nuclear Medicine Technologists. Part 1: Basic Principles of X-Ray Production*
Magazine article from: Journal of Nuclear Medicine Technology; 9/1/2004; ; 700+ words
; ...good understanding of x-ray imaging physics and basic CT scanner operation...the first article on x-ray production, the nuclear...characteristics of x-rays relative to other electromagnetic...radiations, including -y-rays in terms of energy, wavelength...b) methods of x-ray ...
|
|
Probe bares heart of X-ray inferno.(Physics)(Brief Article)
Magazine article from: Science News; 1/8/2005; ; 618 words
; ...gets compressed and emits the X rays. Sandia's Daniel B. Sinars...have now plucked from Z's X-ray deluge a grainy record of those...was to pipe in additional X rays from outside the machine that...overwhelm or destroy the X-ray detector. Sinars says that...last November at a plasma-physics ...
|
|
X-Ray Imaging Physics for Nuclear Medicine Technologists. Part 2: X-Ray Interactions and Image Formation*
Magazine article from: Journal of Nuclear Medicine Technology; 3/1/2005; ; 700+ words
; ...Technol 2005; 33:3-18 Diagnostic x-ray imaging relies on the attenuation of x-rays in the patient, where the transmitted x-ray beam is detected and produces a 2-dimensional...represent the primary radiation. X-ray attenuation (removal of x-rays by absorption and scattering) within...
|
|
Cosmic rays: down-to-earth physics. (technology behind particle physics) (Science and Technology)
Magazine article from: The Economist (US); 1/21/1989; 700+ words
; ...Cosmic rays Down-to-earth physics IN ORDER to do particle physics...biggest accelarators, cosmic rays ought to interest particle physicists too. Most cosmic rays are made of charged particles...energetic as those seen in cosmic rays requires a celestial particle...s atmosphere. The ...
|
|
Demonstration of X-ray laser process "close at hand" according to Princeton Plasma Physics Laboratory scientists.
PR Newswire; 10/29/1984; 700+ words
; ...demonstration of the X-ray laser process is close...scientists at Princeton Plasma Physics Laboratory (PPPL) announced...Princeton to develop the X-ray laser as a diagnostic...Suckewer studied plasma physics at Moscow University under...University. The PPPL X-ray laser work was primarily...
|
|
Armenia's Physics Institute Active in Study of Cosmic Rays
Newspaper article from: Armenian Reporter, The; 2/26/2000; ; 700+ words
; ...02-26-2000 Armenia's Physics Institute Active in Study of Cosmic Rays The Cosmic Ray Division (CRD) of the Yerevan...The director of the Cosmic Ray Division, Dr. Ashot Chilingaryan...working at the two Cosmic Ray stations (one at NorAmberd...
|
|
The Physics of Radiotherapy X-Rays And Electrons.(Brief article)(Book review)
Magazine article from: Radiologic Technology; 3/1/2008; ; 675 words
; THE PHYSICS OF RADIOTHERAPY X-RAYS AND ELECTRONS. Metcalfe P, Kron T...titled The Physics of Radiotherapy X-Rays from Linear Accelerators, and is well...programs. The Physics of Radiotherapy X-Rays and Electrons also is a comprehensive...
|
|
High energy gamma-ray astronomy; proceedings. (CD-ROM included).(PHYSICS)(Brief Article)(Book Review)
Magazine article from: SciTech Book News; 6/1/2005; 572 words
; ...American Institute of Physics, [c]2005 885 p...with high-energy gamma ray astronomy, with several...origin of galactic cosmic rays, the highest-energy cosmic rays, cosmic rays and gamma radiation from...of galaxies, gamma-ray blazars, non-thermal...
|
|
The Physics of Radiotherapy X-Rays and Electrons.(Brief article)(Book review)
Magazine article from: Radiologic Technology; 3/1/2008; ; 671 words
; THE PHYSICS OF RADIOTHERAPY X-RAYS AND ELECTRONS. Metcalfe P, Kron T...titled The Physics of Radiotherapy X-Rays from Linear Accelerators, and is well...programs. The Physics of Radiotherapy X-Rays and Electrons also is a comprehensive...
|
|
The physics of radiotherapy x-rays and electrons.(Brief Article)(Book Review)
Magazine article from: SciTech Book News; 12/1/2007; 508 words
; 9781930524361 The physics of radiotherapy x-rays and electrons. Metcalfe...interaction properties of X-rays and electrons, dosimetry...calibration of megavoltage X-rays and electrons, and properties of X-ray and electron beams. Clinical...
|
|
ray
Book article from: The Columbia Encyclopedia, Sixth Edition
ray in physics, term denoting the straight line along which light or other form of radiation is propagated from its...electrons emitted from a cathode or particles emitted by substances exhibiting radioactivity . See cosmic rays ; X ray .
|
|
Cosmic Rays
Book article from: Space Sciences
...unstable mesons produced by cosmic rays impinging on the upper atmosphere...frame to decay. Although cosmic rays have been known for more than...increased understanding of nuclear physics, that the "radiation" was...weather. Incoming galactic cosmic rays are scattered on magnetic ...
|
|
X-rays
Book article from: The Oxford Companion to the Body
...xF6;ntgen, Professor of Physics in Wurzburg, Bavaria, accidentally discovered X-rays in November 1895 while studying cathode rays in a low pressure gas discharge...in the path of the invisible rays which he was investigating...screen, he made the first X-ray photograph — of his...
|
|
X-ray
Book article from: Medical Discoveries
...houses banned the use of X-ray binoculars in order to prevent...awarded the first Nobel Prize for Physics in 1901. Practical Uses of X-rays The first medical use of X-rays came in 1896. It was American...Alva Edison invented the X-ray fluoroscope that same year...
|
|
Hansen, William Webster
Dictionary entry from: Complete Dictionary of Scientific Biography
...California, 23 May 1949) physics, microwave electronics . Encouraged...electrical engineering and later physics, in which he received the doctorate with a dissertation on X-ray excitation (1933). After...electrons for experiments in X-ray physics, eschewing large static...
|