1981
DOI: 10.1130/spe186-p149
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The dust fall in Beijing, China on April 18, 1980

Abstract: The granulometrical and mineralogical studies of the fallen dust collected at Beijing during dust-haze weather on April 18, 1980, show that it resembles the typical Pleistocene loess of China in composition and texture. The fallen dust is mainly composed of silt-size grains as are those of the loess. Quartz, feldspar, and carbonates constitute more than 90% of the total amount of the fallen dust, and they are subangular to subrounded. These characteristics of mineral grains of the fallen dust show evidently th… Show more

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Cited by 63 publications
(8 citation statements)
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“…Japan is located downstream of dust storms from the Gobi Desert [ Duce and Tindale , 1991; Young et al , 1991], first noted in 1150 B.C. as “dust rain” by Chinese observers [ Sheng et al , 1981]. Furthermore, Trichodesmium is a ubiquitous component of the phytoplankton within Japanese and Chinese shelf seas [ Carpenter , 1983; Minagawa and Wada , 1986], particularly within the warm waters of the Kuroshio Current [ Nagasawa and Marumo , 1967; Marumo and Nagasawa , 1976].…”
Section: Resultsmentioning
confidence: 99%
“…Japan is located downstream of dust storms from the Gobi Desert [ Duce and Tindale , 1991; Young et al , 1991], first noted in 1150 B.C. as “dust rain” by Chinese observers [ Sheng et al , 1981]. Furthermore, Trichodesmium is a ubiquitous component of the phytoplankton within Japanese and Chinese shelf seas [ Carpenter , 1983; Minagawa and Wada , 1986], particularly within the warm waters of the Kuroshio Current [ Nagasawa and Marumo , 1967; Marumo and Nagasawa , 1976].…”
Section: Resultsmentioning
confidence: 99%
“…Convective heat transfer rate Q·pc can be given by where αpc is the convective heat transfer coefficient between the cylinder bore and water, whose value can be calculated by the following equation where Nu is the Nusselt number for convective heat transfer. Since the expression of Nu is related to whether the water is laminar or turbulent, it can be determined by Reynolds number as following 28 substituting relevant parameters into equation (49), the Reynolds number is 23,925. So, the water in the piston chamber is turbulent flow.…”
Section: Thermodynamic Modeling and Simulation Of Wlapmentioning
confidence: 99%
“…The clearance between the bearing plate and the plate valve is often designed to be 45 mm. Thus, the flow through the clearance would be considered to be laminar according to the hydrodynamic theory [16,18]. Pressure distribution between the plate valve and the bearing plate is shown as follows ( Fig.…”
Section: Mechanism Of the Plate Valvementioning
confidence: 99%
“…Assuming that the flow through the concentric gap between the piston and the cylinder bore is laminar and considering the influence of laminar inceptive flow (coefficient, c e ¼ 1.3) [18] and d 2 ¼ d 0 2 ; let the influence factor of eccentricity on the flow ½1 þ (1 þ 1:5)=2 ¼ 1:75 [20], the flow from the concentric gap to the slipper can also be expressed as…”
Section: Mathematical Modelmentioning
confidence: 99%