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  • Analytical Chemistry and Spectroscopy  (5,640)
  • Chemical Engineering  (4,710)
  • ASTROPHYSICS  (4,663)
  • STRUCTURAL MECHANICS  (2,417)
  • 2020-2024  (2)
  • 1985-1989  (15,754)
  • 1960-1964  (1,674)
Collection
Keywords
Publisher
Language
Years
Year
  • 1
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    Integrated Chemical Processes in Liquid Multiphase Systems (2022)
    De Gruyter | De Gruyter
    Details
    Publication Date: 2024-04-05
    Description: The essential principles of green chemistry are the use of renewable raw materials, highly efficient catalysts and green solvents linked with energy efficiency and process optimization in real-time. Experts from different fields show, how to examine all levels from the molecular elementary steps up to the design and operation of an entire plant for developing novel and efficient production processes.
    Keywords: Process Engineering ; Chemical Engineering ; Technical Chemistry ; thema EDItEUR::P Mathematics and Science::PN Chemistry ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNU Sustainability ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TD Industrial chemistry and manufacturing technologies::TDC Industrial chemistry and chemical engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGM Materials science ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TQ Environmental science, engineering and technology
    Language: English
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    E-BOOK
  • 2
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    Feature Papers in Eng 2022 (2023)
    MDPI - Multidisciplinary Digital Publishing Institute
    Details
    Publication Date: 2023-06-23
    Description: The aim of this second Eng Special Issue is to collect experimental and theoretical re-search relating to engineering science and technology. The general topics of Eng are as follows: electrical, electronic and information engineering; chemical and materials engineering; energy engineering; mechanical and automotive engineering; industrial and manufacturing engineering; civil and structural engineering; aerospace engineering; biomedical engineering; geotechnical engineering and engineering geology; and ocean and environmental engineering. Therefore, the following editorial is a selection of representative works of these topics.
    Keywords: &nbsp ; Environment Management ; Environmental Engineering ; Chemical Engineering ; Materials Engineering&nbsp ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
    Language: English
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    E-BOOK
  • 3
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    Nasa to Launch Beacon Explorer, Will Test Laser News Release No. 64-237 (1964)
    In:  CASI
    Details
    Publication Date: 2019-12-18
    Description: Beacon explorer satellite for ionospheric study and evaluation of laser technique for deriving orbital and geodetic information
    Keywords: STRUCTURAL MECHANICS
    Type: HQ-E-DAA-TN75269
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    NASA TECHNICAL REPORTS
  • 4
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    NASA to Launch Air Density Explorer (1963)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Spherical satellite for measuring upper atmosphere air density launched by scout vehicle
    Keywords: STRUCTURAL MECHANICS
    Type: Release No. 63-271
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    NASA TECHNICAL REPORTS
  • 5
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    Meteoritics (1964)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Keywords: ASTROPHYSICS
    Type: NASA-TT-F-100 , NAS 1.77:F-100 , AD-A276988
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    NASA TECHNICAL REPORTS
  • 6
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    Binary models for the progenitor of SN 1987A (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: Binary models are used to examine the possibility that the progenitor of SN 1987 is a component of a binary system. Certain ranges of parameter space in which binary evolution produces progenitors that are applicable to models of SN 1987A are considered. The proposed binary models are capable of making definite predictions that can be checked against observations.
    Keywords: ASTROPHYSICS
    Type: ; : Visual information
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    NASA TECHNICAL REPORTS
  • 7
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    Gamma ray astrophysics to the year 2000. Report of the NASA Gamma Ray Program Working Group (1988)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Important developments in gamma-ray astrophysics up to energies of 100 GeV during the last decade are reviewed. Also, the report seeks to define the major current scientific goals of the field and proposes a vigorous program to pursue them, extending to the year 2000. The goals of gamma-ray astronomy include the study of gamma rays which provide the most direct means of studying many important problems in high energy astrophysics including explosive nucleosynthesis, accelerated particle interactions and sources, and high-energy processes around compact objects. The current research program in gamma-ray astronomy in the U.S. including the space program, balloon program and foreign programs in gamma-ray astronomy is described. The high priority recommendations for future study include an Explorer-class high resolution gamma-ray spectroscopy mission and a Get Away Special cannister (GAS-can) or Scout class multiwavelength experiment for the study of gamma-ray bursts. Continuing programs include an extended Gamma Ray Observatory mission, continuation of the vigorous program of balloon observations of the nearby Supernova 1987A, augmentation of the balloon program to provide for new instruments and rapid scientific results, and continuation of support for theoretical research. Long term recommendations include new space missions using advanced detectors to better study gamma-ray sources, the development of these detectors, continued study for the assembly of large detectors in space, collaboration with the gamma-ray astronomy missions initiated by other countries, and consideration of the Space Station attached payloads for gamma-ray experiments.
    Keywords: ASTROPHYSICS
    Type: NASA-TM-107995 , NAS 1.15:107995
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    NASA TECHNICAL REPORTS
  • 8
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    The composition of comets (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The present discussion of recent studies concerning cometary composition gives attention to the results obtained by in situ measurements of Comet Halley's dust composition by Vega 1's impact mass spectrometer, which discovered a mineral fraction that appears to be CI chondritic, as well as an organic fraction consisting of highly unsaturated hydrocarbons. The mineral fraction of comets appears to form a core that is embedded in essentially organic material; the spectroscopic invisibility of carbon is due to its presence in the cometary dust. The mass of most dust particles is found to be in the 10 to the -12th to 10 to the -14th g range. A considerable fraction of the dust grains serves as an extended source of gas in the inner coma.
    Keywords: ASTROPHYSICS
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    NASA TECHNICAL REPORTS
  • 9
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    Comet Halley: The view from Pioneer Venus (1989)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The plans to scan Halley's Comet at close range using the Pioneer Venus Orbiter are discussed. The composition of comets, their paths through space, and the history of comet encounters are examined. An ultraviolet spectrometer aboard the spacecraft will determine the composition of the gaseous coma and will measure the total gas production during its passage. The Pioneer Venus Orbiter will observe the comet for five weeks before solar interference with communications occurs as Venus passes on the far side of the Sun from Earth. Diagrams of the solar system and the relationship of the comet to the planets and the Sun are provided.
    Keywords: ASTROPHYSICS
    Type: NASA-NF-127 , NAS 1.20:127
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    NASA TECHNICAL REPORTS
  • 10
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    Fatigue behavior of 5Ni-Cr-Mo-V steel weldments containing fabrication discontinuities (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The applicability of linear elastic fracture mechanics to characterize the fatigue behavior of high-strength steel weldments containing lack-of-penetration (LOP) and slag/lack-of-fusion (S/LOF) discontinuities is explored. Full penetration, double-V butt welds with reinforcements removed were tested under zero-to-tension axial loading. Various filler metals and welding techniques were used. Both sound welds and welds containing discontinuities were cycled to failure. Where possible, cycles to crack initiation were estimated by strain gage measurements. The fracture mechanics approach was successful in correlating the fatigue lifetimes of specimens containing single LOP discontinuities of varying size. However, the fatigue behavior of specimens containing multiple S/LOF discontinuities proved to be much more complex and difficult to analyze.
    Keywords: STRUCTURAL MECHANICS
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    NASA TECHNICAL REPORTS
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